method for processing an indication message and user equipment configured to process the indication

专利摘要:
TRANSITION STATE OR MODE BASED ON TRIGGING SCRI TRANSITION MESSAGE. A user equipment, UE, implements a method of processing (generating) indication messages, such as SCRL messages (signaling connection release indication) (to trigger a transition between states such as, for example, Cell-PCH, URA- PCH or Cell-Fach). If the upper layers indicate that there is no more packet-switched data for an extended period (for example, no data exchange between the UE and the network for a certain period, usually estimated using a 'bypass timer'), then if a count of the number of indication messages (i.e., SCRI message) that have been triggered (i.e., transmitted) in at least one state of RRC (radio resource control) is less than a maximum number, the UE increments the count, the cause is defined in the indication message (i.e., "UE requested PS data end of session"), and the indication message (i.e., 20 SCRI) is sent.
公开号:BR112012012351B1
申请号:R112012012351-3
申请日:2010-10-05
公开日:2021-05-04
发明作者:Paul Carpenter；Johanna Lisa Dwyer
申请人:Blackberry Limited；
IPC主号:

专利说明:

CROSS REFERENCE FOR RELATED ORDERS
This application claims the benefit of Provisional Patent Application No. US 61/263,818 filed November 23, 2009, which is incorporated herein by reference in its entirety. DISCLOSURE FIELD
The present disclosure relates to the control of radio resources between User Equipment (UE) or other wireless or mobile device and a wireless network, and in particular to the transition between states and modes of operation in a wireless network. wire, such as a Universal Mobile Telecommunications System (UMTS) network. FUNDAMENTALS
A Universal Mobile Telecommunications System (UMTS) is a packet-based broadband system for the transmission of text, digitized voice, video and multimedia. It is highly subscribed to the third generation standard and is generally based on Broadband Coded Division Multiple Access (W-CDMA).
In a UMTS network, a Resource Control portion of
Radio (RRC) of the protocol stack is responsible for the allocation, CONNECTION and release of radio resources between the UE and the UTRAN. This RRC protocol is described in detail in the 3GPP TS 25.331 specification. Two basic modes that the UE can be in are defined as "idle mode" and "UTRA RRC connected mode" (or simply "connected mode" as used here). UTRA is supported by UMTS Terrestrial Radio Access. In idle mode, the UE or other mobile device is obliged to request an RRC connection whenever it wants to send any user data or in response to a page whenever the UTRAN or the General Packet Radio Service Support Node page Serving (GPRS) (SGSN) to receive data from an external data network, such as an outgoing server. Idle and Connected mode behaviors are described in detail in the Third Generation Partnership Project (3GPP) specifications TS 25.304 and TS 25.331.
When in a UTRA RRC connected mode, the device can be in one of four states. These are: CELL-DCH: A dedicated channel is allocated to the uplink and downlink UE in this state to exchange data. The UE shall take actions as described in 3GPP 25.331. CELL_FACH: No dedicated channel is allocated to User Equipment in this state. Instead, common channels are used to exchange a small amount of data in bursts. The UE shall perform actions as described in 3GPP 25.331 which includes the cell selection process as defined in 3GPP TS 25.304. CELL_PCH: UE uses Discontinuous Reception (DRX) to monitor broadcast messages and pages through a Paging Indicator Channel (PICH). No uplink activity is possible. The UE shall perform actions as described in 3GPP 25.331 which includes the cell selection process as defined in 3GPP TS 25.304. UE must perform CELL UPDATE procedure after cell reselection. URA_PCH: UE uses Discontinuous Reception (DRX) to monitor broadcast messages and pages through a Paging Indicator Channel (PICH). No uplink activity is possible. The UE shall perform actions as described in 3GPP 25.331 including the cell selection process as defined in 3GPP TS 25.304. This state is similar to CELL_PCH, except that the URA UPDATE procedure is only triggered through UTRAN Registration Area (URA) reselection.
The transition from idle mode to connected mode and vice versa is controlled by the UTRAN. When a UE in idle mode requests an RRC connection, the network decides to move the UE to the CELL_DCH or CELL_FACH state. When the UE is in an RRC connected mode, again, it is the network that decides when to release the RRC connection. The network may also move the UE from one RRC state to another before releasing the connection or, in some cases, instead of releasing the connection. State transitions are typically triggered by activity or inactivity data between the UE and the network. Since the network may not know when the UE has finished exchanging data for a particular application, it usually keeps the RRC connection for some time in anticipation of more data to/from the UE. This is generally done to reduce the latency of the subsequent Call Setup and CONNECT radio resources. The RRC connection release message can only be sent over the UTRAN. This message releases the signal link connection and all radio resources between the UE and the UTRAN. Generally, the term "radio bearer" refers to radio resources allocated between the UE and the UTRAN. And, the term "radio access bearer" generally refers to radio resources allocated between the UE and, for example, an SGSN (Serving GPRS Service Node). The present disclosure shall at times refer to the term radio resource, and that term refers, as the case may be, to one or both of the radio bearer and/or the radio access bearer.
The problem with the aforementioned is that even if an application in the UE has completed its data transaction and is not expecting any further data exchange, it still waits for the network to move it to the correct state. The network may not even be aware of the fact that the application on the UE has completed its data exchange. For example, an application in the UE may use its own acknowledgment-based protocol to exchange data with its application server, which is accessed via the UMTS core network. Examples are applications that run on the User Datagram Protocol/Internet Protocol (UDP/IP) implementing their own guaranteed delivery. In such a case, the UE knows whether the application server has sent or received all data packets or not, and is in a better position to determine whether any further data exchange should take place and therefore decide when to terminate the RRC connection associated with Packet Service Domain (PS). Since the UTRAN controls when the RRC connected state is changed to a different state or in an idle mode and the UTRAN is not aware of the data delivery state between the UE and an external server, the UE can be forced to stay in a higher data rate state or mode than is necessary, possibly resulting in decreased battery life for the mobile station and also eventually resulting in wasted network resources due to radio resources being unnecessarily kept busy and they are therefore not available to another user.
One solution to the above is to have the UE send a signaling release indication to the UTRAN when the UE realizes that it has ended a data transaction. In accordance with section 8.1.14.3 of the 3GPP TS 25.331 specification, the UTRAN can release the signaling connection upon receipt of the signaling release indication from the UE, causing the UE to transfer to an idle mode or some other state of RRC . A problem with the above solution is that the UTRAN can become flooded with signaling release indication messages from the UE and other UEs. ABSTRACT
According to an aspect of the present application, a method is provided for processing an indication message by a user equipment, the method comprising: in the user equipment: if upper layers indicate that there is no more PS data, for a period extended, and if a count of how many indication messages were triggered in at least one state of RRC is less than a maximum number: increment the count of how many indication messages were triggered in at least one state of RRC; define a cause in an indication message, and send the indication message.
In accordance with another aspect of the present application, user equipment configured to process the indication messages is provided, user equipment configured to: if upper layers indicate that there is no more PS data for an extended period, and if a count of how many indication messages were triggered in at least one RRC state is less than a maximum number: increment the count of how many indication messages were triggered in at least one RRC state; define a cause in an indication message, and send the indication message. BRIEF DESCRIPTION OF THE DRAWINGS
The present disclosure will be better understood with reference to the drawings in which: Figure 1 is a block diagram showing RRC states and transitions; Figure 2 is a schematic diagram of a UMTS network showing several UMTS cells and one URA; Figure 3 is a block diagram showing the various phases of an RRC Connection Setup; Figure 4A is a block diagram of an exemplary transition between a CELL_DCH connected mode state and an idle mode initiated by the UTRAN according to the current method; Figure 4B is a block diagram showing an exemplary transition between a connected mode of CELL_DCH state transitioning to an idle mode using signaling release indications; Figure 5A is a block diagram of an exemplary transition from a CELL_DCH inactive state to a CELL_FACH inactive state to an idle mode initiated by the UTRAN; Figure 5B is a block diagram of an exemplary transition between a CELL_DCH idle state and an idle mode using signaling release indications; Figure 6 is a block diagram of a UMTS protocol stack; Figure 7 is an exemplary UE that can be used in connection with the present method; Figure 8 is an exemplary network for use in connection with the present method and system; Figure 9 is a flowchart showing the steps of adding cause for a signaling connection release indication in the UE; Figure 10 is a flowchart showing the steps taken by a UE after receiving a signaling connection release indication having a cause; Figure 11 illustrates a graphical representation of exemplary logical and physical channel allocation during the exemplary operation of the network shown in Figure 8 in which multiple simultaneous packet data communication service sessions are provided with the UE; Figure 12 illustrates a functional block diagram of UE and network elements that provide for the radio resource release function to release radio resources from individual packet data services by virtue of an embodiment of the present disclosure; Figure 13 illustrates a representative message sequence diagram of signaling generated in accordance with the operation of an embodiment of the present disclosure by which to release radio resource allocation for a PDP context; Figure 14 illustrates a message sequence diagram, similar to that shown in Figure 13, also representative of signaling generated in accordance with the operation of an embodiment of the present disclosure by which to release allocation of radio resources; Figure 15 illustrates a process diagram representative of the process of an embodiment of the present disclosure; Figure 16 illustrates a method flowchart illustrating the method of operation of an embodiment of the present disclosure; Figure 17 illustrates a method flowchart, also illustrating the method of operation of an embodiment of the present disclosure; Figure 18 illustrates a method flowchart of a modality where transition decisions are made based on a Radio Resource Profile in a network element; Figure 19 illustrates a simplified block diagram of a network element capable of being used with the method of Figure 18; Figure 20 illustrates a data flow for sending a transition indication or request message, and Figure 21 illustrates a data flow for setting an inhibit timer value in a UE. DETAILED DESCRIPTION
The examples and modalities provided below describe various methods and systems for transitioning a User Equipment (UE) or other mobile device between various states/modes of operation in a wireless network, such as a UMTS network. It is to be understood that other implementations on other types of networks are also possible. For example, the same teachings can also be applied to a Code Division Multiple Access (CDMA) network (eg 3GPP2 IS-2000), CDMA Wideband (W-CDMA) network (eg 3GPP UMTS/Access network) of Package of
High Speed (HSPA)), an Evolved UTRAN network (eg LTE), or by way of generalization, to any network based on radio access technologies that use radio controlled network resources, or that do not maintain any knowledge of the state of device application-level data exchanges. The specific examples and implementations described below, although presented for simplicity in relation to UMTS networks, are equally applicable to these other network environments. Furthermore, the network element is sometimes described below as the UTRAN. However, if network types other than UMTS are used, the network element can be appropriately chosen based on the network type. Furthermore, the network element can be the core network, in a UMTS system or any other appropriate network system, where the network element is the entity that makes the transition decisions.
In a particular example, the current system and method provide the transition from a connected RRC mode to a more efficient battery or radio resource state or mode, providing decision-making capabilities on the network. In particular, the present method and apparatus for providing transition based on the time of receipt of an indication from a UE implicitly or explicitly indicating that an RRC state or mode transition associated with a special signaling connection with radio resources to another state or mode must occur. As will be appreciated, such indication or transition request may use an existing communication under current standards, for example, a SIGNALING CONNECTION RELEASE INDICATION message, or it may be a new message specific to change the state of the UE, such as a “preferred RRC status request” or a “data transfer complete indication message”. A data transfer complete indication message is a message that indicates the completion of higher layer data transfer. As used herein, an indication may refer to any scenario, and may incorporate a request.
The transition indication originated by the UE may be sent in some situations when one or more applications in the UE have completed a data exchange and/or when a determination is made that the UE application(s) is not expected to exchange any data additional. The network element can then use the indication and any information provided therein, as well as other information related to the radio resource, such as quality of service, Access Point Name (APN), Packet Data Protocol (PDP) context ), history information, among others, defined here as a radio resource profile, to make a network-specific decision about whether to transition the mobile device to another mode or state, or do nothing. The transition indication provided by the UE or mobile device can take different forms and can be sent under different conditions. In a first example, the transition indication can be sent based on a composite state of all applications residing in the UE. Specifically, in a UMTS environment, if an application in the UE determines that it has finished exchanging data, it can send a “finished” indication to a “connection manager” component of UE software. The connection manager can, in one modality, keep track of all existing applications (including those providing a service over one or more protocols), associated Packet Data Protocol (PDP) contexts, packet switched radio resources (PS) and associated circuit switched (CS) radio resources. A PDP context is a logical association between a UE and PDN (Public Data Network) that works across a UMTS core network. One or several applications (for example, an email application and a browser application) in the UE can be associated with a PDP context. In some cases, an application in the UE is associated with a primary PDP context and multiple applications can be tied up with secondary PDP contexts. The Connection Manager receives “ended” indications from different applications in the UE that are simultaneously active. For example, a user might receive an email from an outbound server while browsing the web. After the email application has sent you a confirmation, this may indicate that you have completed your data transaction. The browser application might behave differently and instead make a predictive determination (for example, through an inactivity timer) of when to send a “finished” indication to the connection manager.
Based on a state composed of such active application indications, UE software may decide to send a transition indication to indicate or request the network that a transition from one state or mode to the other should take place. Alternatively, the UE software can instead wait before it sends the transition indication and introduces a delay to ensure that the application has truly finished exchanging data and does not need to be held in a radio or battery resource state or mode. intensive. Delay can be dynamic based on traffic history and/or application profiles. Whenever the connection manager determines with some probability that no application is expected to exchange data, it can send a transition indication to the network to indicate that a transition should take place. In a specific example, the transition indication might be a signaling release indication for the appropriate connection domain (eg PS domain) to request a transition to an idle mode. Alternatively, the transition indication may be a request for state transition within connected mode to the UTRAN.
As described in more detail below, based on receipt of a transition indication and optionally a radio resource profile, a network element such as the UTRAN in a UMTS environment can decide the transition of the UE from a state or way to another.
Other transition indications are possible. For example, instead of relying on a state composed of all applications active on the UE, the UE software can, in an alternative modality, send a transition indication each time a UE application has completed a data exchange and/ or the application is not expected to exchange additional data. In this case, the network element (e.g., the UTRAN), based on an optional radio resource profile for the UE, as described with reference to Figure 18 below, can use the indication to make a transition decision.
In yet another example, the transition indication may simply indicate that one or more applications in the UE have completed a data exchange and/or that the UE application(s) is not expected to exchange any additional data. Based on that indication and an optional radio resource profile for the UE, the network (e.g., UTRAN) can decide whether or not to transition the UE to a more suitable state or mode or operation.
In another example, the transition statement may be implicit rather than explicit. For example, the indication can be part of a status report sent periodically. This status report can include information such as whether a radio link buffer has data or it can include information about outgoing traffic.
When the UE sends a transition indication it may include additional information in order to assist the network element in making a decision to act on the indication. This additional information would include the UE's reason or cause for sending the message. This cause or reason (explained in more detail below) would be based on the UE determining a need for “rapid dormancy” as a behavior. Such additional information may be via a new information element or a new parameter within the transition indication message.
In another embodiment, a timer may exist in the UE to ensure that a transition indication may not be sent until a duration of time has elapsed (inhibit duration) since a previous transition indication was sent. This inhibit timer restricts the UE from sending the transition indication message very often and even allows the network to make a determination, based on messages that are triggered only with a given maximum frequency. The length of time can be determined by a timer whose value is pre-configured, or defined by a network (indicated or signaled). If the value is set by a network, it can be transmitted in new or existing messages, such as RRC connection request, RRC connection release, Radio Carrier Configuration, UTRAN mobility information or a block of information from system, among others, and can be an element of information in these messages. The value may alternatively be transmitted in an inhibit transition indication portion of an RRC connection setup message sent by the UTRAN in response to an RRC connection request message received from the UE, for example.
In an alternative embodiment, the value can be transported to a UE in a message whose type depends on a state of the UE. For example, the network can send the value to all UEs in a cell as a portion of a system information message, which is read by the UE when it is in an idle state, URA_PCH, Cell_PCH or CELL_FACH.
In yet another embodiment, the value may be sent as a portion of an RRC connection setup message.
Network generated messages can also convey an implicit inhibit timer value by not including an inhibit timer in the message or in an information element within the message. For example, upon determining that a bypass timer is bypassed from a received message, a UE applies a predetermined value for use as a bypass timer value. An exemplary use of bypass timer value is to prohibit the UE from sending a transition indication message. In such a situation, when a UE detects the omission of an expected inhibit timer value in an received message, the UE may, based on the omission, be prohibited from sending any transition indication messages. One way to achieve this is for the UE to adopt an inhibit timer value of infinity.
In another embodiment, when the UE detects the omission of an inhibit timer value (and, for example, adopts an inhibit timer value of infinity), it can send transition indications, but without including any additional information, specifically, it can omit the reason for triggering the sending of the transition indication (described in more detail below). Omitting a cause element in a transition indication message can ensure backward compatibility by allowing UEs to use an existing transition indication message (eg, SIGNALING CONNECTION RELEASE INDICATION) to request or indicate a transition.
Not including an inhibit timer in the received message is further detailed with reference to an exemplary embodiment, in which a system information block is transmitted in a cell, or sent to a UE and the System Information Block is configured to transmit an inhibit timer value. In this mode, if the UE receives a System Information Block that does not contain an inhibit timer, known as T3xx, in the message or an information element within the message, in which case the UE can determine not to allow the UE to send the message of transition indication, for example, by setting the inhibit timer, T3xx, to infinity.
Not including an inhibit timer is further detailed with reference to the exemplary embodiment in which an inhibit timer, T3xx, is omitted from a UTRAN mobility information message. In such a situation, a recipient UE may continue to apply a previously stored inhibit timer value. Alternatively, the UE, detecting the omission of the inhibit timer T3xx, may determine not to allow the UE to send the transition indication message, for example, by setting the inhibit timer, T3xx, to infinity.
In yet another exemplary embodiment, a UE, detecting the omission of an inhibit timer in the received message or in an information element within the message, sets the inhibit timer value to another predetermined value (e.g., one of 0 seconds, 5 seconds, 10 seconds, 15 seconds, 20 seconds and 30 seconds, 1 minute, 1 minute and 30 seconds, 2 minutes). Alternatively or in addition, these examples can be applied to other network generated messages.
In other embodiments, if the inhibit timer (value) is not sent or signaled to the UE in an information element or message, or the inhibit timer is not read from system information transmission or received from other UTRAN messages dedicated on the transition from one cell to another, sending a transition indication may or may not occur.
Specifically in an embodiment the UE detecting that there is no inhibit timer present, does not initiate a transition indication based on an upper layer determining that it has no more PS data to transmit.
In an alternative embodiment the UE detecting that there is no inhibit timer present, may initiate a transition indication based on the upper layer by determining that it has no more PS data to transmit.
In yet another embodiment, if no timer value is received from the UTRAN within a message, or within an information element in a message (through transmission or otherwise), instead of setting the timer value in the UE to infinite the UE may set the inhibit timer to zero or alternatively exclude any CONNECTION for the timer, and instead be allowed to send a transition indication. In this case, the UE can omit or be prohibited from appending a cause in the transition indication message. In one embodiment a SIGNALING CONNECTION RELEASE INDICATION message is used as an example of a transition indication.
In one mode the transition indication is transmitted using the signaling connection release indication procedure. The signaling connection release indication procedure is used by the UE to indicate to the UTRAN that one of its signaling connections has been released.
Specifically, in accordance with TS 25.331 Section 8.1.14.2 the UE shall, upon receiving a request to release the signaling connection from the upper layers for a specific CN domain, verify that the signaling connection in the variable "SIGNALING ESTABLISHED CONNECTION" the specific CN domain identified in the information element “CN domain identity” exists If this happens, the UE can start the signaling connection release indication procedure.
In case the inhibit timer value is not signaled or otherwise conveyed to the UE, no Signaling Connection Release Indication Cause is specified in the SIGNALING CONNECTION RELEASE INDICATION message. Those skilled in the art will appreciate that in this alternative embodiment the lack of a timer value does not result in the timer value being set to infinity.
On the UTRAN side, upon receipt of a SIGNALING CONNECTION RELEASE INDICATION message without a cause, the UTRAN indicates the signaling connection release for the identified CN domain identity to the higher layers. This can then initiate the release of the established radio resource control connection.
According to another alternative embodiment, when the UTRAN signals or transmits a timer value to the UE, for example, inhibit timer T3xx in the information element "timers and UE constants in connected mode" (or using information system such as SIB1 , SIB3 or SIB4, or with a dedicated UTRAN mobility information message), the release procedure takes place as follows. First, the UE can check if there are any circuit switched domain connections indicated. These connections can be indicated in variable "CONNECTION SIGNAL ESTABLISHED". If there is no circuit switched domain connection, a second check to determine if an upper layer indicates that there will be no packet switched domain data for an extended period of time may occur.
If there are no circuit switched domain connections and no packet switched domain data is expected for an extended period, the UE can then check whether the T3xx timer is running.
If timer T3xx is not running, UE sets information element "CN Domain Identity" for packet switched domain (PS). In addition, the information element "Cause of Signaling Connection Release Indication" is defined as "End of PS data session requested by UE". The SIGNALING CONNECTION RELEASE INDICATION message is transmitted on the DCCH using AM RLC. Also, after transmission the T3xx timer is started.
The above procedure ends with the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message, as confirmed by the RLC in the above procedure. In this mode, the UE is inhibited from sending the SIGNALING CONNECTION RELEASE INDICATION message with a Signaling Connection Release Indication Cause set to "UE-requested PS data end of session", while timer T3xx is in execution or until the T3xx timer expires.
When the T3xx timer is running, if the signaling connection release indication procedure is started due to no additional packet switched domain data for an extended period, the UE is responsible for the implementation to start the procedure when the T3xx timer expires . The UE decision may be based on determining whether it has any subsequent signaling connection release indication or requesting messages to send and if so, the UE decision may include re-checking some or all of the same checks for the start procedure as outlined in this document.
On the UTRAN side, if the SIGNALING CONNECTION RELEASE INDICATION message received does not include a Signaling Connection Release Indication Cause, the UTRAN may request the signaling connection release from a higher layer and the upper layer may then start releasing the signaling connection. If, on the other hand, the SIGNALING CONNECTION RELEASE INDICATION message received includes a cause, the UTRAN can either release the signaling connection or initiate a transition to a more efficient battery state (for example, CELL_FACH, CELL_PCH, URA_PCH or IDLE_MODE ).
The inhibition duration above can be based on the state the UE would like to transfer to. For example, the inhibit duration may be different if the mobile indicates its last preference for some RRC states/modes versus others. For example, it may be different if the mobile indicates a preference for idle mode, against Cell_FACH, or against Cell_PCH/URA PCH states. In the case where the inhibition duration is defined by the network, this can be achieved by the network indicating/sending two (or more) sets of values to the mobile unit, to be used depending on the scenario. Alternatively, the indication can be done in such a way that the proper Inhibit duration value is only indicated/signaled to the mobile: for example, if the UE wants to transfer to Cell_PCH, a different elapsed duration time can be set than if the EU wants to transition to idle.
The inhibition duration above may be different depending on which state/mode the mobile RRC is currently in (eg Cell_DCH / Cell_FACH versus Cell_PCH / URA_PCH, or Cell_DCH versus Cell_FACH, or Cell_PCH / URA_PCH).
The above inhibit duration may be different depending on whether the network has already acted on the mobile's RRC state information preference. Such recognition can take place on the network, or on the mobile side. In the first case, this can affect the Inhibit values indicated/flagged by the network to the mobile. In this second case, different settings of inhibit duration values can be pre-configured or indicated/signaled by the network. As a particular case, the inhibition duration/functionality could be reduced or canceled if the network acted on the RRC state information of preference of the mobile, for example, initiate a transition to a state indicated by the UE.
The above inhibition duration may differ depending, for example, on network preferences, characteristics, resources, loads or capabilities. A network can indicate a short inhibition duration if it is capable of receiving frequent transition indication messages. A network can indicate a long inhibit duration if it is unable or unwilling to receive frequent transition indication messages. A network may indicate a predetermined period of time during which a UE may not send transition indication messages. The specific period of time can be indicated numerically (ie 0 seconds, 30 seconds, 1 minute, 1 minute 30 seconds, 2 minutes or infinity), for example. A UE that receives an inhibit duration of 0 seconds is capable of sending transition indications without delay. A UE that receives an inhibit duration of infinity is not able to send transition indications.
A maximum number of messages per time window (eg "no more than 15 messages every 10 minutes") can be used/specified instead of or in addition to the inhibition duration.
Combinations of the above inhibit durations/maximum messages per time window are possible.
By way of example, the present disclosure generally describes the reception of an RRC CONNECT REQUEST message by an UTRAN from a UE. Upon receiving an RRC CONNECTION REQUEST message, the UTRAN shall, for example, accept the request and send an RRC CONNECTION CONNECT message to the UE. The RRC LINK CONNECT message may include an Inhibit Transition Indication, which is known as the T3xx timer. Upon receipt of the RRC LINK CONNECT message by the UE, the UE must, for example, store the value of Timer T3xx, replacing any previously stored value, or, if Timer T3xx is not in the RRC LINK CONNECT message, set the value of timer to infinity. In some embodiments, the RRC LINK CONNECT message shall include a Inhibit Transition Indication to ensure that the UE knows that the UTRAN supports the Inhibit Transition Indication signaling.
In one embodiment, it is assumed that during mobility in a DCH state, the UE will keep its currently stored value for the inhibit timer. In some cases where the inhibit timer is set to infinity, it may mean that the UE must wait for data network inactivity timers to expire and the network moves the UE to an RRC state, where it can receive or determine a new one value for the inhibit timer. In other cases where the inhibit timer is some value that is not infinite before handover, this other value continues to be used until the UE is able to update the timer value to that indicated in the new cell.
In some cases, the inhibit timer and transition indication message (for example, SIGNALING CONNECTION RELEASE INDICATION) may not be implemented in some networks or in some cells in a network. For mobility purposes, if there is no support available for the feature of sending a transition indication or request message (particularly in the case where a cause is used), the UE should default not to send the message. This avoids unnecessary transmissions and associated waste of network resources and battery resources.
Furthermore, for mobility purposes, network equipment from a different provider used within a network can lead to adjacent cells using different inhibit timers that need to be updated in the UE when the UE moves between cells.
In an alternative embodiment this is done by providing all transfer and related carrier control messages including a value for a T3xx inhibit timer. Such messages are referred to here as mobility messages. This allows the UE to receive new inhibit timer values when moving between cells. This also allows the UE to set a default timer value for the inhibit timer if one of these mobility messages does not contain an inhibit timer value. As will be appreciated, if no inhibit timer value is received in the mobility messages, this indicates that the cell is not enabled for fast sleep.
As another example of a transition indication procedure, a Data Transfer Complete Indication procedure can be used by the UE to indicate to the UTRAN that it has determined that it does not need to transfer any additional PS domain data. In connection with the example described above, the UE would not send the Data Transfer Complete Indication message before the T3xx timer expires, if the T3xx timer was executed.
The Data Transfer Complete Indication procedure begins with an indication that the RRC or higher layers will no longer have PS domain data for an extended duration. If a CS domain connection is indicated in the SIGNALING CONNECTION ESTABLISHED variable or if the T3xx timer is set to infinity the procedure ends. Otherwise, if timer T3xx is not running (ie has expired) or is set to 0 seconds, a DATA TRANSFER COMPLETE INDICATION message is presented to the lower layers for transmission using AM RLC on DCCH after which the T3xx timer is started or restarted when the message has been delivered to the lower layers;
The UTRAN on receipt of the DATA TRANSFER COMPLETE INDICATION may decide to initiate a UE transition to a more battery efficient RRC state or idle mode.
UE should not send data transfer complete indication message while timer T3xx is running.
The present disclosure provides a method for controlling the use of a transition indication message by a user equipment, comprising including an inhibit transition indication in a configuration message; and send the configuration message with the inhibition transition indication to the user equipment.
The present disclosure further provides a network element configured to control the use of a transition indication message by a user equipment, the network element configured to: include an inhibit transition indication in a configuration message, and send the configuration message with the indication of inhibit transition to the user equipment.
The present disclosure further provides a method of a user equipment (UE) for sending a transition indication, the method comprising setting a timer in accordance with an inhibit transition indication received from a network element; detect that a data transfer is complete; and send the transition indication when detecting that the timer is not working.
The present disclosure further provides user equipment configured to send a transition indication, the user equipment configured to: set a timer in accordance with an inhibit transition indication received from a network element; detect that a data transfer is complete; and send the transition indication when detecting that the timer is not working.
Reference is now made to Figure 1. Figure 1 is a block diagram showing the various modes and states for the radio resource control portion of a protocol stack in a UMTS network. In particular, the RRC can be either in an idle mode of RRC 110 or in a connected mode of RRC 120.
As will be appreciated by those skilled in the art, a UMTS network consists of two network segments based on network segments. These are the Core Network (CN) and the Universal Terrestrial Radio Access Network (UTRAN) (as illustrated in Figure 8). The Core Network is responsible for switching and routing data calls and data connections to external networks, while the UTRAN handles all radio-related functionality.
In idle mode 110, the UE must request an RRC connection to configure the radio resource whenever data needs to be exchanged between the UE and the network. This can be as a result of either an application on the UE requesting a connection to send data, or as a result of the UE monitoring a paging channel to indicate whether the UTRAN or SGSN has paged the UE to receive data from an external data network. such as an outgoing server. In addition, the UE also requests an RRC connection whenever it needs to send Mobility Management signaling messages such as Location Area Update.
Once the UE has sent a request to the UTRAN to establish a radio connection, the UTRAN chooses a state for the RRC connection to be in. Specifically, the connected mode of RRC 120 includes four separate states. These are: CELL_DCH state 122, CELL_FACH state 124, CELL_PCH state 126, and URA_PCH state 128.
From idle mode 110, the UE autonomously transitions to state CELL_FACH 124, in which it does its initial data transfer, subsequent to which the network determines which RRC connected state to use for continuous data transfer. This may include the network either moving the UE to Cell Dedicated Channel (CELL_DCH) state 122 or keeping the UE in Cell Forwarding Access Channel (CELL_FACH) 124 state.
In CELL_DCH 122 state, a dedicated channel is allocated to the UE for both uplink and downlink to exchange data. This state, since it has a dedicated physical channel allocated to the UE, typically requires the highest battery power of the UE.
Alternatively, the UTRAN can keep the UE in a CELL_FACH 124 state. In a CELL_FACH state no dedicated channel is allocated for the UE. Instead, common channels are used to send the signal in a small amount of data bursts. However, the UE still has to continuously monitor the FACH, and therefore this consumes more battery power than in a CELL_PCH state, an URA_PCH state, and idle mode.
In the connected mode of RRC 120, the state of RRC can be changed at the discretion of the UTRAN. Specifically, if data inactivity is detected for a specific period of time or data transfer below a certain threshold is detected, the UTRAN can move the RRC state from CELL_DCH state 122 to CELL_FACH state 124, 126 or from CELL_PCH state to state URA_PCH 128. Similarly, if the detected load is above a certain threshold, then the state of RRC can be moved from state CELL_FACH 124 to state CELL_DCH 122.
From the CELL_FACH 124 state, if data inactivity is detected for a predetermined time in some networks, the UTRAN can move the RRC state from CELL_FACH 124 state to a paging channel (PCH) state. This can be state CELL_PCH 126 or state URA_PCH 128.
From CELL_PCH 126 state or URA_PCH 128 state the UE must move to CELL_FACH 124 state in order to initiate an update procedure to request a dedicated channel. This is the only state transition the UE controls.
Idle mode 110 and state CELL_PCH 126 and state URA_PCH 128 use a discontinuous receive cycle (DRX) to monitor broadcast messages and pages over a Paging Indicator Channel (PICH). No uplink activity is possible.
The difference between state CELL_PCH 126 and state URA_PCH 128 is that state URA_PCH 128 only triggers an URA update process if the current UTRAN registration area (URA) of the UE is not among the list of URA identities present in the current cell . Specifically, reference is made to Figure 2. Figure 2 shows an illustration of several UMTS cells 210, 212 and 214. All of these cells require a cell update procedure if reselected to a CELL_PCH state. However, in an UTRAN record area, each will be within the same UTRAN record area (URA) 320, and thus an URA update procedure is not triggered when moving between 210, 212 and 214 when in URA_PCH mode . As seen in Figure 2, other cells 218 are outside of URA 320, and may be part of a separate URA or no URA at all.
As will be appreciated by those skilled in the art, from a battery life perspective the idle state provides the lowest battery usage compared to the above states. Specifically, because the UE needs to control the paging channel only at intervals, the radio does not need to be continuously turned on, but instead will wake up periodically. The trade-off for this is the latency to send data. However, if this latency is not very high, the advantages of being in idle mode and saving battery power outweigh the disadvantages of connection latency.
Reference is again made to Figure 1. Various UMTS infrastructure providers move between states 122, 124, 126, and 128 based on various criteria. These criteria can be network operator preferences regarding signaling savings or radio resource savings, among others. Exemplary infrastructures are described below.
In a first exemplary infrastructure, the RRC moves between an idle mode and a Cell_DCH state directly after access starts in a CELL_FACH state. In Cell_DCH state, if two seconds of inactivity are detected, the RRC state changes to a Cell_FACH 124 state. If, in Cell_FACH 124 state, ten seconds of inactivity are detected, then the RRC state changes to Cell_PCH 126. Forty-five minutes of inactivity in Cell_PCH 126 state will result in the RRC state going back to idle 110 mode.
In a second exemplary infrastructure, RRC transition can occur between an idle mode 110 and connected mode 120, depending on a load threshold. In the second infrastructure, if the load is below a certain threshold, then the UTRAN moves the state from RRC to state CELL_FACH 124. Conversely, if the data load is above a certain load threshold, then the UTRAN moves the state from RRC to a CELL_DCH 122 state. In the second infrastructure, if two minutes of inactivity are detected in CELL_DCH 122 state, the UTRAN moves the state from RRC to CELL_FACH 124 state. After five minutes of inactivity in CELL_FACH 124 state, the UTRAN moves the state from RRC to CELL_PCH state 126. In CELL_PCH state 126, two hours of inactivity are required before going back to idle mode 110.
In a third exemplary infrastructure, the movement between idle mode 110 and connected mode 120 is always to state CELL_DCH 122. After five seconds of inactivity in state CELL_DCH 122 the UTRAN moves state from RRC to state CELL_FACH 124. Thirty seconds of inactivity in state CELL_FACH 124 results in moving back to idle mode 110.
In a fourth exemplary infrastructure the RRC transitions from an idle mode to a directly connected mode in a CELL_DCH 122 state. In the fourth exemplary infrastructure, the CELL_DCH 122 state includes two configurations. The first one includes a CONNECTION that has a high data rate and a second CONNECTION includes a lower data rate, but still within the CELL_DCH state. In the fourth exemplary infrastructure, the RRC transits idle 110 directly into the high data rate CELL_DCH substate. After 10 seconds of inactivity the RRC state transitions to a low data rate CELL_DCH substate. Seventeen seconds of inactivity from the low data substate of state CELL_DCH 122 results in the RRC state changing it to idle mode 110.
Exemplary infrastructure four above shows how UMTS infrastructure providers are implementing various states. As will be appreciated by those skilled in the art, in each case, whether the time spent exchanging real data (such as an email) is significantly short compared to the time it takes to stay in the CELL_DCH or CELL_FACH states. This causes an unnecessary current drain, making the user experience on new generation networks like UMTS worse than on previous generation networks like GPRS.
Furthermore, although the CELL_PCH 126 state is more ideal than the CELL_FACH 124 state from a battery life perspective, the DRX cycle in a CELL_PCH 126 state is typically set to a smaller value than the idle 110 mode. As a result, the UE needs to wake up more often in the CELL_PCH state 126 than in an idle mode 110.
The URA_PCH 128 state with a DRX cycle similar to the 110 idle state is probably the optimal trade-off between battery life and latency for the connection. However, the URA_PCH 128 state is not currently implemented in the UTRAN. In some cases, it is therefore desirable to make a quick transition to idle mode as quickly as possible after an application has finished exchanging data, from a battery life perspective.
Reference is now made to Figure 3. When transitioning from an idle mode to a connected mode several data and signaling connections need to be made. Referring to Figure 3, the first item to be performed is an RRC 310 Connection Setting. As indicated above, this RRC 310 Connection Setting can only be turned off by the UTRAN. After the RRC 310 Connection Setup is performed, a Signaling Connection Setup 312 is initiated.
Once Signaling Connection Setup 312 completes, an Integrity and Encryption Setup 314 is initiated. Upon completion of this, a 316 Radio Carrier Setup is performed. At this point, data can be exchanged between the UE and UTRAN.
Dropping a connection is similarly done in reverse order, in general. The 316 Radio Carrier Configuration is removed and then the RRC 310 Connection Configuration is removed. At this point, the RRC moves to idle 110 mode, as illustrated in Figure 1.
Although the current 3GPP specification does not allow the UE to release the RRC connection or indicate its preference for RRC state, the UE can still indicate termination of a signaling connection to a specific core network domain, such as the Packet Switched domain ( PS) used by Pack Switched applications. According to section 8.1.14.1 of 3GPP TS 25.331, the SIGNALING CONNECTION RELEASE INDICATION procedure is used by the UE to indicate to the UTRAN that one of its signaling connections has been released. This procedure can, in turn, initiate the RRC connection release process.
Thus, while remaining within current 3GPP specifications, signaling connection release can be initiated after removal of Signaling Connection Configuration 312. It is within the capability of the UE to drop Signaling Connection Configuration 312, and it in turn, of according to specification "may" initiate RRC connection release.
As will be appreciated by those skilled in the art, if Signaling Connection Configuration 312 is removed, the UTRAN also needs to clear decryption 314, Integrity Configuration, and Radio Carrier Configuration 316 after Signaling Connection Configuration 312 is removed. .
If Signaling Connection Configuration 312 is removed, the RRC Connection Configuration is typically removed by the network for current provider infrastructures, if no CS connection is active.
Using this for one of the specific transition indication examples mentioned above, if the UE determines that the data exchange has ended, for example, if a “connection manager” component of the UE software is provided with an indication that the exchange of data. data has ended, so the connection manager can determine whether or not to drop the 312 signaling CONNECTION. For example, an email application on the device sends an indication that it has received an acknowledgment from the sending email server that the email was actually received by the sending server. The connection manager can, in one modality, keep track of all existing applications, associated PDP contexts, associated PS radio resources and associated circuit switched (CS) radio bearers. In other embodiments a network element (e.g., the UTRAN) may maintain control of existing applications, associated PDP contexts, QoS, associated PS radio resources, and associated CS radio bearers. A delay can be introduced at any of the UE or network element to ensure that the application(s) has actually finished exchanging data and does not require an RRC connection, even after the “finished” indication has been sent. This delay can be equivalent to an inactivity timeout associated with the application(s) or the UE. Each application can have its own inactivity timeout and thus the delay can be a composite of all application timeouts. For example, an email application might have a five-second inactivity timeout, while an active browsing application might have a sixty-second timeout. An inhibit duration timer can further delay sending a transition indication. Based on a composite state of all such indications coming from active applications, as well as a radio resource profile and/or inhibit duration timer delay in some modalities, the UE software decides how long it should or need to wait before that it sends a transition indication (for, for example, a signaling connection release indication or change of state request) to the appropriate core network (for example, PS Domain). If the delay is implemented in the network element, the element makes a determination of whether and how to transition the UE, but only operates the transition after the delay has run its course. Inactivity timeout can be made dynamic based on a history of traffic pattern and/or application profile.
If the network element transitions the UE to idle mode 110, which can occur at any phase of the connected mode of RRC 120, as illustrated in Figure 1, the network element releases the RRC connection and moves the UE to idle mode 110 , as illustrated in Figure 1. This also applies when the UE is performing any packet data services during a voice call. In this case, the network may choose to release only the PS domain signaling connection, and keep the CS domain signaling connection, or alternatively, it may choose not to release anything and instead keep the signaling connections for both domains of PS and CS.
In an additional modality, a cause can be added to the transition indication indicating to the UTRAN the reason for the indication. In a preferred embodiment, the cause may be an indication that an abnormal state caused the indication or that the indication was initiated by the UE as a result of a requested transition. Other normal (ie non-abnormal) transactions may also result in sending the transition indication.
In another preferred embodiment, multiple timeouts can cause a transition indication to be sent to an abnormal condition. The examples of timers below 5 are not exhaustive, and other timers or abnormal conditions are possible. For example, 10.2.47 3GPP TS 24,008 specifies timer T3310 as:
TIMER 3310
This timer is used to indicate an attachment failure. The failure to attach can be a result of the network or it can be a radio frequency (RF) problem, such as a collision or bad RF.
The attachment attempt can occur multiple times, and an attachment failure results from either a predetermined number of 15 failures or an explicit rejection. A second 3GPP 10.2.47 timer is timer T3330, which is specified as:

TIMER T3330
This timer is used to indicate a routing area update failure. Upon expiration of the timer, another routing area update can be requested multiple times and a routing area update failure results from any predetermined number of failures or an explicit rejection. A third 3GPP 10.2.47 timer is timer T3340, which is specified as:

TIMER T3340
This timer is used to indicate a GMM service request failure. Upon expiration of the timer, an additional GMM service request can be initiated multiple times and a GMM service request failure results from either a predetermined number of failures or an explicit rejection.
Thus, instead of a transition indication cause limited to an abnormal condition and a clearance by the UE, the transition indication cause may still include information about which timer failed for an abnormal condition. In a specific example, where a signaling connection release indication is used as a transition indication, the indication can be structured as:

CONNECTION RELEASE INDICATION SIGNALING
This message is used by the UE to indicate to the UTRAN a request to release an existing signaling connection. Adding the Cause of the Connection Release Indication of
Signaling allows the UTRAN or other network element to receive the cause of the signaling connection release indication, whether it was due to an abnormal condition, and what the abnormal condition was. Based on the receipt of the SIGNALING CONNECTION RELEASE INDICATION, an RRC Connection Release Procedure is, in turn, allowed to be initiated in the UTRAN.
In an implementation of this example, the UE, upon receiving a request to release or abort, an upper layer signaling connection for a specific CN domain (core network), initiates the signaling connection release indication procedure if a signaling connection is identified in a variable. For example, an ESTABLISHED CONNECTION SIGNALING variable, for the specific CN domain identified with the IE (information element) "CN domain identity" exists. If the variable does not identify any existing signaling connections, any ongoing establishment of a signaling connection for that specific CN domain is otherwise aborted. Just after starting the signaling connection release indication procedures in Cell_PCH or URA_PCH states, the UE performs a cell update procedure using a cause "uplink data transmission". When a cell update procedure is successfully completed, the UE continues with the signaling connection release indication procedures that follow.
That is, the UE sets the information element (IE) "CN domain identity" to the value indicated by higher logical layers. The value of IE indicates the CN domain whose signaling connection associated with the upper layers is marking to be released. If the domain identity of CN is defined as the domain of PS, and if the upper layer indicates the cause for initiating this request, the IE "CAUSE OF SIGNALING RELEASED INDICATION" is therefore defined. The UE further removes the signaling connection with the identity indicated by higher layers from the "CONNECTION SIGNALING ESTABLISHED" variable. O
UE transmits a SIGNALING CONNECTION RELEASE INDICATION message over, for example, the dedicated control channel (DCCH) using acknowledged mode radio link control (AM RLC). After confirmation of successful delivery of the release indication message by the RLC, the procedure ends.
An IE "Signaling Connection Release Indication Cause" is also used in accordance with an embodiment of the present disclosure. The release cause is aligned, for example, with existing message definitions. The layer release cause message superior is structured, for example, as:

In this example, expirations T3310, T330, and T3340 correspond to the expiration of correspondingly numbered timers identified above. A cause value is configurable, in an application, as a "UE Requested PS Data End of Session" rather than a "UE Requested Transition to Idle" to remove the UE indication of preference by a transition to idle and provide for the UTRAN to decide on the state transition, although the expected result corresponds to that identified by the cause value. The extension for signaling connection release indication is preferably, but not necessarily, a non-critical extension.
Reference is now made to Figure 9. Figure 9 is a flowchart of an exemplary UE monitoring whether or not to send a signaling connection release indication to multiple domains (eg PS or CS). The process starts at step 910.
The UE transitions to step 912 where it checks whether an abnormal condition exists. Such an abnormal condition may include, for example, timer T3310, timer T3320, or timer T3340 expiring as described above. If these timers expire a certain predetermined number of times, or if an explicit rejection is received based on the expiration of any one of these timers, the UE proceeds to step 914 where it sends a signaling connection release indication. The SIGNALING CONNECTION RELEASE INDICATION message is appended with a signaling release indication cause field. The signaling clear indication cause field includes at least the signaling clear indication that is based on an abnormal condition or state, and a modality includes the specific timer that has expired to result in the abnormal condition.
Conversely, if in steps 912 the UE finds that no abnormal conditions exist, the UE proceeds to step 920 where it checks whether additional data is expected for the UE. This can as described above, include when an email is sent and confirmation of sending the email is received back in the UE. Other examples of where the UE will determine that no further data is expected will be known to those skilled in the art.
If in step 920 the UE determines that the data transfer has ended (or, in the case of a circuit switched domain that a call is terminated) the UE proceeds to step 922 in which it sends a signaling connection release indication in the which the signaling release indication cause field has been added and includes whether the UE requested a transition to idle or simply indicates the end of the PS session.
From step 920, if the data has not ended, the UE goes back and continues to check whether an abnormal condition exists at step 912 and whether the data has ended at step 920.
Once the signaling connection release indication is sent in step 914 or step 922, the process proceeds to step 930 and ends.
The UE includes functional elements, implementable, for example, by applications or algorithms performed through operation of a UE microprocessor or by hardware implementation, which form a checker and a transition indication sender. The verifier is configured to check whether a transition indication should be sent. And, a transition indication sender is configured to send a transition indication responsive to an indication by the verifier that the transition indication should be sent. The transition indication may include a transition indication cause field.
In one implementation, the network is instead implicitly made aware of a timer's timeout, and the UE need not send a cause value indicating the timer's timeout. This means that the timer is started after network authorization. Cause codes are defined, and cause codes are provided by the network to the UE. Such cause codes are used by the UE to start the timer. The network is implicitly aware of the reason for the timer's subsequent timeout as the cause code previously sent by the network causes the timer to start. As a result, the UE does not need to send a cause value indicating timeout of the timer.
As suggested by Figure 9, as well as the above description, a cause is include and sent together with a transition indication (eg a SIGNALING CONNECTION RELEASE INDICATION) to indicate: 1.) an abnormal condition as well as 2.) a normal condition (not an abnormal condition, such as a request for an end of session PS data and/or a transition to an idle mode)). In various implementations, therefore, operations in the UE provide cause addition for the transition indication to indicate an abnormal condition, or, alternatively, to indicate a preference for a request for a transition to idle or an end-of-session PS of data, that is, normal operation. Such an operation, of course, also includes UE operation in which a cause is added to the transition indication only when an indication of an abnormal condition is to be made. And conversely, such an operation also includes UE operation where a cause is added to a transitional indication just to indicate normal, that is, non-abnormal operations and transactions. That is to say, with respect to Figure 9, in such an alternative operation, if, in step 912, an abnormal condition exists, the branch yes is taken to step 914 whereas, if an abnormal condition does not exist, then the UE proceeds directly to the final step 930. On the other hand, in the other such alternative operation, subsequent to the start step 912 a path is taken directly to the finished data step 920. If the data is finished, the yes branch is taken to the step 920 and subsequently to step 930. If the data is not terminated in step 920, the branch is not taken back to the same step, i.e. step 920.
Referring to Figure 10, when a network element receives the transition indication in step 1010 (e.g., a signaling connection release indication as shown), the network element examines the transition indication cause field if present. at step 1014 and at step 1016 it checks whether the cause is an abnormal cause or whether it is due to the UE requesting a transition to idle and/or PS data session end. If, in step 1016, the signaling connection release indication is of abnormal cause, the network node proceeds to step 1020 at which an alarm can be observed for performance monitoring and alarm monitoring purposes. The key performance indicator can be updated accordingly.
Conversely, if in step 1016 the cause of the transition indication (e.g. signaling connection release indication) is not a result of an abnormal condition, or in other words, it is a result of the UE requesting a data session end from PS or transition to idle, the network node proceeds to step 1030 where no alarm is triggered and the indication can be filtered from the performance statistics, thus preventing the performance statistics from being skewed. From step 1020 or step 1030 the network node proceeds to step 1040 at which the process ends.
Reception and examination of the transition indication may result in the initiation by the network element of terminating a packet switched data connection or, alternatively, a transition to another more suitable state, for example, CELL_FACH, CELL_PCH, URA_PCH or IDLE_MODE.
As suggested above, in some implementations, the absence of a cause for a transition indication can also be used to determine whether the transition indication is a result of a normal or abnormal condition and whether an alarm should be triggered. For example, if a cause is added only to denote normal conditions (ie, non-abnormal, such as for, for example, a request for PS data end-of-session and/or transition to idle mode), and the element If the network element receives a transition indication with no added cause, the network element can infer from the absence of a cause that the transition indication is a result of an abnormal condition and optionally trigger an alarm. On the other hand, in another example, if a cause is added only to denote abnormal conditions, and the network element receives a transition indication with no cause, the network element can infer from the absence of a cause that the transition indication is a result of a normal condition (eg request for end of session of PS data and/or transition to idle mode) and not triggering an alarm.
As will be appreciated by those skilled in the art, step 1020 can be used to further distinguish between various alarm conditions. For example, a T3310 timeout can be used to keep a first set of statistics and a T3330 timeout can be used to keep a second set of statistics. Step 1020 can distinguish between causes of the abnormal condition, thus allowing the network operator to control performance more efficiently.
The network includes functional elements, implementable, for example, by applications or algorithms carried out through the operation of a processor or by hardware implementation, which form an examiner and an alarm generator. The examiner is configured to examine a transition indication cause field from the transition indication. The examiner verifies that the transition indication cause field indicates an abnormal condition. The alarm generator is configured to selectively generate an alarm if examination by the examiner determines that the Signaling Connection Release Indication Cause field indicates the abnormal condition.
In one implementation, upon receipt of a signaling connection release indication, the UTRAN forwards the cause that is received and requests, from higher layers, for the signaling connection release. The upper layers are then able to initiate the release of the signaling connection. The IE signaling release indication cause indicates the UE upper layer cause to trigger the UE RRC to send the message. The cause is possibly the result of an abnormal upper layer procedure. Differentiation of the cause of the message is ensured through successful IE reception.
One possible scenario includes a scenario where, prior to RLC's confirmation of successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message, re-establishment of the transmit side of the RLC entity on the signaling radio bearer RB2 takes place. In case of such an occurrence, the UE retransmits the SIGNALING CONNECTION RELEASE INDICATION message, for example, on the uplink DCCH using AM RLC on signaling radio bearer RB2. In case an inter-RAT (Radio Access Technology) transfer from UTRAN procedure occurs before RLC confirmation of the successful delivery of SIGNALING CONNECTION RELEASE INDICATION or request message, the UE aborts the signaling connection when on the new RAT.
In one embodiment, instead of a "signaling connection release indication" or request, a "data transfer complete indication" can be used. Functionality similar to that described in Figures 9 and 10 above would apply to this full data transfer indication.
In one embodiment, the data transfer complete indication is used by the UE to inform the UTRAN that the UE has determined that there is no CS domain data transfer in progress, and that it has completed its PS data transfer. Such message is sent from UE to UTRAN on DCCH using AM RLC, for example. An exemplary message is shown below. 10.2.x FULL DATA TRANSFER INDICATION
This message is used by the UE to inform the UTRAN that the UE has determined that there is no CS domain data transfer in progress, and that it has completed its PS data transfer. RLC-SAP: AM Logical Channel: DCCH Address: UE ^ UTRAN

Data Transfer Complete Indication Reference is now made to Figure 20. Figure 20 illustrates the modality within which a transition or request indication (for example, a signaling connection release indication or a data transfer complete indication) is sent from the UE to the UTRAN. The process starts at step 2010 and proceeds to step 2012 where a check is made at the UE to determine if the conditions at the UE are appropriate for sending a transition indication message. Such conditions are described in the present description, for example, with reference to Figure 11 below, and may include one or more applications in the UE determining to terminate the data exchange. Such conditions may also include waiting for some period of time for the T3xx timer to expire if it is running.
In an additional and alternative modality, conditions may include preventing the transition indication from being sent if timer T3xx is set to infinity. As will be appreciated, T3xx can include a number of discrete values, one of which represents an infinite value.
If, in step 2012, the conditions are not appropriate to send the transition indication or order message, the process repeats itself and continues to monitor until the conditions are appropriate to send the transition indication or order message.
Once the conditions are right the process proceeds to step 2020 in which a transition indication is sent to the UTRAN. Examples of indications are shown in the tables above.
The process then proceeds to step 2022 where a check is made to determine whether the transition indication was successful. As would be appreciated by those skilled in the art this may mean that the UTRAN has successfully received the transition indication and initiated a state transition. If so, the process goes to step 2030 and ends.
Conversely, if it is determined at step 2022 that the transition indication was not successful the process proceeds to step 2024 and waits for a period of time. This wait can be implemented using an "inhibit duration", eg T3xx, which would not allow the mobile to send a new transition indication message before a certain period has elapsed. Alternatively, the process can limit the number of transition indication messages within a given period of time (for example, no more than 15 messages in 10 minutes). A combination of inhibition duration and limiting the number of messages within a given period of time is also possible.
The duration can be predetermined, such as a value defined in the standards, it can be defined by a network element, for example, as a portion of an RRC connection request, an RRC connection setup message, an RRC connection release RRC, a radio bearer configuration, a system information transmission message, a system information block message, an ACTIVE CONFIGURATION UPDATE, a CELL UPDATE CONFIRMATION, UTRAN mobility information message, a handover for UTRAN command, a Physical Channel Reset message, a Radio Carrier Reset Message, a Radio Bearer Release Message, a Transport Channel Reset message, or any setup, request, or reset message . Also, the duration can be set based on a parameter within the transition indication message. Thus, the duration can be longer if the UE is requesting a transition to Cell_PCH instead of idle.
Signaling or sending the duration of a network element can take the form of an information element. As used herein, signaling or forwarding may include directly sending the information to a UE, or transmitting the information. Likewise, receiving at the UE may include direct reception or reading of a transmission channel. An exemplary piece of information includes:
Inhibit Transition Indication The values of T3xx, in a modality are defined as:

Definition T3xx
In a T3xx mode it can be included in the existing UMTS information element: "Timers and UE Constants in Connected Mode". This can, therefore, be transmitted in a cell, by inclusion in the Type 1 System Information Block. In an alternative modality the timer value can also be signaled using other system information messages, such as SIB3 or SIB4, or either alternatively or additionally may be signaled with a dedicated UTRAN mobility information message.
As indicated in the table above, the T3xx value can vary between defined values and include either a zero value or an infinite value. The zero value is used to indicate that no inhibitions need to occur. The infinite value indicates that a Transition Indication Message should never be sent.
In a mobility modality, the UE resets the T3xx value whenever a new network or cell is transferred to. In this example, the value is set to infinity. This ensures that if the transition messages or radio bearer messages do not contain an inhibit timer value then by default the UE should not send the Transition Indication message. Thus, for example, if the radio bearer or transition messages do not contain a "Inhibit Transition Indication", the timer value is set to infinity and otherwise the timer value received in the indication overwrites any previously stored value .
In another alternative embodiment, the values of T3xx are defined as follows. The inclusion of the T3xx timer is optional, thus ensuring that if it is not included, the UE does not need to support the CONNECTION or use of this timer:

An alternative T3xx definition The receipt of the inhibit timer in a cell is thus an indication to the UE that the cell recognizes the use of the transition indication message. The UE can determine whether initiated by the RRC or higher layers due to a determination of no more PS domain data for an extended duration, signal a transition indication using a cause value. When the network receives a transition indication message (anyway, as captured in this document) with this cause value it can determine to signal to the UE a transition of state change to a more battery efficient RRC State.
Whereas an alternative embodiment, when the inhibit timer is not received or read in a cell the UE can determine that the cause for sending the transition indication message is not supported by the UTRAN. In this case, the UE can determine not to set a value for T3xx and also not to use the T3xx in relation to sending or inhibiting the sending of the transition indication message.
If the UE determines that the inhibit timer is omitted, then it can omit including the cause value from the transition indication message and just send the transition indication message, based on the determination of the upper layer that has no more. PS data to transmit.
In an alternative modality the UE determining that the bypass timer is bypassed, the UE shall not initiate the transition indication based on the upper layer by determining that it has no more PS data to transmit.
In one embodiment of the present behavior described, the transition indication message is the SIGNALING CONNECTION RELEASE INDICATION message.
In a first alternative embodiment, reception of the inhibit timer in a cell is thus an indication that the cell recognizes the use of the transition indication messages. Where sending this message is allowed when T3xx is not set to infinite value,
then when the network receives a transition indication, it can determine to signal to the UE a state transition to a more battery efficient RRC State (for example, CELL_FACH, CELL_PCH, URA_PCH or IDLE_MODE).
In a particular example, using standard 3GPP TSG-RAN2 25.331, the following is added to the sections identified below:

Inhibit Transition Indication This is added to sections: 10.2.48.8.6 Type 3 System Information Block; 10.2.48.8.7 Type 4 System Information Block; 10.2.1 Active configuration update; 10.2.8 Confirm Cell Update; 10.2.16a Transfer to Command from UTRAN; 10.2.22 Physical Channel Reconfiguration; 10.2.27 Radio bearer reconfiguration; 10.2.30 Radio bearer release; 10.2.33 Radio bearer configuration; 10.2.40 RRC connection configuration; 10.2.50 Transport channel reconfiguration;
The messages described above, in addition to messages 10.2.48.8.6 Type 3 System Information Block and 10.2.48.8.7 Type 4 System Information Block, are all examples of mobility information messages.
The above covers system connections and operations, as well as transitions between multiple cells, ensuring that a UE has an inhibit timer value if that cell supports the transition indication message. For example, UTRAN Command Transfer ensures that a transition from another radio access technology such as a second-generation network to a third-generation network will provide an inhibit timer value if supported by the target cell of the third-generation network. generation.
In particular referring to Figure 21 , a transition between cells occurred as a precondition or during another operation of the UE, as shown by reference numeral 2110 as 'Start'. The process proceeds to block 2112 where a configuration message is received. This can be any of the messages identified above, and includes both mobility and non-mobility messages. The process then proceeds to block 2114 where a check is made to see if the setup message includes an inhibit timer value.
If not, the process proceeds to block 2120 where the inhibit timer value is set to infinity. Conversely, from block 2114 the process proceeds to block 2130 if it is determined that the setup message does not include an inhibit timer value. In block 2130 the inhibit timer value is stored in the UE, replacing the previous value for the inhibit timer. The process then proceeds to block 2140 and ends. As will be appreciated, in one embodiment the process of Figure 21 is invoked whenever a network or cell change occurs, or whenever a transition indication needs to be sent.
Once the process has waited a predetermined amount of time at step 2024 the process proceeds to step 2012 to determine if the conditions for sending a transition indication still exist. If so, the process goes back to step 2020 and 2022.
Based on the above, inhibit timer value can be provided in different modalities. In a first modality this can be provided just by using an RRC Connection Setup Message to transmit an inhibit timer value. In a second embodiment, system information can be used to transmit the inhibit timer value.
In a third modality the RRC Connection Configuration and System Information Messages can both be used to send the inhibit timer value to ensure that the UEs in idle mode and Cell_PCH/Cell_FACH and DCH states have the latest information.
In a fourth mode the inhibit timer value can be sent as in the third mode, with the addition of sending an inhibit timer value in a Radio Carrier Setup so that when a PDP context is established it has no carrier. radio, when a Radio Carrier is subsequently established to send a data message the inhibit timer value can be transmitted at that time.
In a fifth modality the fourth modality can be combined with all mobility related messages as described above and including reset, cell update confirmation and a Transfer to UTRAN command to transmit the inhibit timer value.
In the first to fourth modes, during mobility the UE keeps its currently stored inhibit timer value. As indicated above, in some cases where the inhibit timer is set to infinity, this may mean that the UE must wait for network timers to expire and the network moves the UE to an RRC state where it can receive or determine a new value for the inhibit timer. In other cases where the inhibit timer is some value that is not infinite before handover, this other value continues to be used until the UE is able to update the timer value to the one indicated in the new cell.
For the fifth embodiment, the process of Fig. 21 is used to ensure that the inhibit timer value is updated during mobility, and that transition indication messages are not unnecessarily sent from a UE.
An exception can occur in RLC reset or inter-RAT change. If a reset of the transmit side of the RLC entity occurs before successful delivery of the transition indication message is acknowledged by the RLC, in one embodiment the UE retransmits the transition indication message over the uplink DCCH using AM RLC.
In one embodiment, if an inter-RAT transfer from UTRAN procedure occurs before successful delivery of the transition indication message is acknowledged by the RLC, the UE aborts the signaling connection while in the new RAT. On the network side, the process is handled similarly to that described with reference to Figure 18 below.
Referring back to Figure 1, in some cases it may be more desirable to be in connected mode 120 in a state such as URA_PCH 128 state than in idle mode 110. For example, if the latency for connection to state CELL_DCH 122 or state CELL_FACH 124 in connected mode 120 is required to be lower, it is preferable to be in a connected mode of PCH 120 state. There are a number of ways to accomplish this, such as, for example, by changing patterns to allow the UE to request the UTRAN move it to a specific state (for example, in this case, the URA_PCH 128 state).
Alternatively, the connection manager can take into account other factors such as what state the RRC connection is currently in. If, for example, the RRC connection is in the URA_PCH state it may decide that it is not necessary to go to idle mode 110 and therefore no signaling connection release procedure is started.
In another alternative, the network element (eg the UTRAN) may itself take into account other factors such as what state the RRC connection is currently in and whether, for example, the RRC connection is in the URA_PCH state he may decide that it is not necessary to switch to idle mode 110 and instead simply transfer the UE to
a more suitable state rather than releasing the connection. Reference is made to Figure 4. Figure 4A shows a current UMTS implementation according to the four infrastructure examples above. As illustrated in Figure 4, time is across the horizontal axes.
The UE starts in idle state of RRC 110 and based on the generated local or mobile data needing to be transmitted or a page received from the UTRAN, starts to establish an RRC connection.
As illustrated in Figure 4A, the connection configuration of RRC 310 occurs first, and the state of RRC is in a connecting state 410 during this time.
Then the 312 signaling connection setup, 314 integrity and encryption setup, and 316 Radio Carrier setup occur. The RRC state is CELL_DCH 122 state during these procedures. As illustrated in Figure 4A, the time taken to move from idle RRC to the time the radio bearer is configured is approximately two seconds in this example. Data is then exchanged. In the example of Figure 4A this is achieved in about 2 to 4 seconds and is illustrated by step 420.
After data is exchanged in step 420, no data is being exchanged except for intermittent RLC signaling PDU as needed and therefore the radio resource is reconfigured by the network to move in a data rate DCH configuration smaller after approximately ten seconds. This is illustrated in steps 422 and 424.
In the lower data rate DCH setting, nothing is received for seventeen seconds, at which point the RRC connection is released by the network in step 428.
Once the RRC connection release is initiated in step 428, the RRC state proceeds to a disconnected state for about 40 milliseconds, after which the UE is in an idle state of RRC 110.
Also illustrated in Figure 4A, the current draw UE is illustrated for the period when the RRC is in the CELL_DCH 122 state. As seen, the current draw is about 200 to 300 milliamps for the entire duration of the CELL_DCH state. During disconnected and idle, approximately 3 milliamps are used, assuming a 1.28 second DRX cycle. However, the 35-second current draw, 200 to 300 milliamps is draining the battery.
Reference is now made to Figure 4B. Figure 4B uses the same “four” example infrastructures above, only now implementing signaling connection release.
As illustrated in Figure 4B, the same configuration steps 310, 312, 314 and 316 occur and this takes the same amount of time when moving between idle state of RRC 110 and CELL_DCH RRC 122 state.
In addition, the exchange of PDU data from RRC to the exemplar email in step 420 of Figure 4A is also done in Figure 4B and this takes about 2 to 4 seconds.
The UE in the example in Figure 4B has an application-specific inactivity timeout, which in the example in Figure 4B is two seconds, and is illustrated by step 440. After the connection manager has determined that there is inactivity for the amount of time specific, the UE sends a transition indication, which in this case is a signaling connection release indication in step 442 and in step 448, the network proceeds, based on receipt of the indication and a Radio Resource Profile for the UE, to release the RRC connection.
As illustrated in Figure 4B, the current draw during the CELL_DCH 122 step is still about 200 to 300 milliamps. However, the connection time is only eight seconds. As will be appreciated by those skilled in the art, the considerably shorter amount of time the mobile remains in the cell_DCH 122 state results in significant battery savings for UE device.
Reference is now made to Figure 5. Figure 5 shows a second example using the infrastructure indicated above as infrastructure "three". As with figures 4A and 4B, a connection setup takes place which takes about two seconds. This requires RRC connection configuration 310, signaling connection configuration 312, integrity and encryption configuration 314, and radio bearer configuration 316.
During this configuration, the UE idles from RRC 110 to a CELL_DCH 122 state with an RRC state connection step 410 in the middle.
As with Fig. 4A, in Fig. 5A the exchange of PDU of RLC data takes place in step 420, and in the example of Fig. 5A it takes two to four seconds.
According to infrastructure three, RLC signaling PDU exchange does not receive data and therefore is idle for five second period in step 422, except for intermittent RLC signaling PDU as required, at which point the radio resource resets the UE to move into a CELL_FACH 124 state of CELL_DCH 122 state. This is done in step 450.
In state CELL_FACH 124, the RLC signaling PDU exchange finds that there is no data except for intermittent RLC signaling PDU as needed for a certain amount of time, in this case thirty seconds, at which point an RRC connection release over the network is performed in step 428. As seen in Figure 5A, this moves the state from RRC to idle mode 110.
As will be seen in Figure 5A, the current draw during DCH mode is between 200 and 300 milliamps. When entering CELL_FACH 124 state the current consumption decreases to about 120 to 180 milliamps. After the RRC connector is released and the RRC moves to idle mode 110 the power consumption is approximately 3 milliamps.
The Connected Mode state of UTRA RRC being CELL_DCH 122 state or CELL_FACH 124 state lasts approximately 40 seconds in the example of Figure 5A.
Reference is now made to Figure 5B. Figure 5B illustrates the same infrastructure "three" as Figure 5A with the same connection time of about two seconds to obtain the RRC 310 Connection Configuration, Signaling Connection Configuration 312, Integrity and Encryption Configuration 314, and Configuration of Radio Carrier 316. Also, data PDU exchange of RLC 420 takes about 2 to 4 seconds.
As with Fig. 4B, a UE application detects a specific inactivity timeout at step 440, at which point the transition indication (e.g., signaling connection release indication 442) is sent by the UE and, as Consequently, the network releases the RRC connection in step 448.
As can be seen further in Figure 5B, the RRC starts in an idle mode 110, moves to a CELL_DCH state 122 without proceeding to the CELL_FACH state.
As will be seen later in Figure 5B, the current draw is about 200 to 300 milliamps at the time the RRC phase is in CELL_DCH 122 state which according to the example in Figure 5 is approximately eight seconds.
Therefore, a comparison between Figures 4A and 4B, and Figures 5A and 5B shows that a significant amount of current consumption is eliminated, thus prolonging the UE's battery life. As will be appreciated by those skilled in the art, the above can still be used in the context of current 3GPP specifications. Reference is now made to Figure 6. Figure 6 illustrates a protocol stack for a UMTS network.
As seen in Figure 6, UMTS includes a CS 610 control plane, PS 611 control plane, and PS 630 user plane. Within these three planes, a non-access stratum (NAS) 614 portion and a portion of access stratum 616 exist.
Portion of NAS 614 in the control plane of CS 610 includes a call control (CC) 618, supplemental services (SS) 620, and short message service (SMS) 622.
The NAS 614 portion of the PS 611 control plane includes both Mobility Management (MM) and GPRS Mobility Management (GMM) 626. It also includes session management/management of radio access carrier SM/RABM 624 and GSMS 628.
CC 618 provides for call management signaling for circuit switched services. The session management portion of SM/RABM 624 provides PDP context deactivation, activation, and modification. SM/RABM 624 also provides trading quality service.
The main function of the RABM portion of the SM/RABM 624 is to connect a PDP context to a Radio Access Bearer. Thus SM/RABM 624 is responsible for configuring, modifying and releasing radio resources. CS 610 control plane and PS 611 control plane, in access stratum 616 is in radio resource control (RRC) 617.
Portion of NAS 614 in PS 630 User Plan includes an application layer 638, TCP/UDP layer 636, and PDP layer 634. The PDP layer 634 may, for example, include Internet Protocol (IP).
Access Layer 616 in PS 630 User Plan includes packet data convergence protocol (PDCP) 632. PDCP 632 is designed to make WCDMA protocol suitable for realizing TCP/IP protocol between UE and RNC (like seen in Figure 8), and is optionally for IP traffic stream protocol header compression and decompression.
The Radio Link Control (RLC) layers of UMTS 640 and Media Access Control (MAC) 650 form data link sublayers of the UMTS radio interface and reside in the RNC node and user equipment.
The Layer 1 (L1) UMTS layer (physical layer 660) is below the RLC/MAC layers 640 and 650. This layer is the physical layer for communications.
When the above can be implemented on a variety of mobile or wireless devices, an example of a mobile device is described below with respect to Figure 7. Reference is now made to Figure 7. UE 700 is preferably a wireless communication device two-way with at least data and voice communication capabilities. UE 700 preferably has the ability to communicate with other computer systems on the Internet. Depending on the exact functionality provided, the wireless device may be referred to as a data messaging device, a two-way pager, a wireless email device, a mobile phone with data messaging capabilities, an Internet device wireless, or a data communication device, as examples.
Where UE 700 is enabled for bidirectional communication, it will incorporate a communication subsystem 711, including both a receiver 712 and a transmitter 714, as well as associated components such as one or more, preferably embedded or internal, antenna elements 716 and 718, local oscillators (LOs) 713, and a processing module such as a digital signal processor (DSP) 720. As will be apparent to those skilled in the communications field, the particular design of the communication subsystem 711 will be network dependent. device in which the device is intended to function. For example, UE 700 may include a communication subsystem 711 designed to operate within the GPRS or UMTS network.
Network access requirements also vary depending on the type of network 719. For example, in UMTS and GPRS networks, network access is associated with a UE 700 subscriber or user. subscriber identity module (SIM) card in order to operate in a GPRS network. In a UMTS USIM or SIM module is required. In CDMA a BAD card or module is required. These will be referred to as a UIM interface here. Without a valid UIM interface, a mobile device may not be fully functional. Local and non-network communication functions, as well as legally required functions (if any), such as emergency calls, may be available, but mobile device 700 will not be able to perform any other functions that involve communications over the 700 network. UIM 744 interface is typically similar to a card slot in which a card can be inserted and ejected like a floppy disk or PCMCIA card. The UIM card can have about 64k of memory and hold many key settings 751, 753 and other information, such as identification, and subscriber related information.
When network registration is required or activation procedures have been completed, UE 700 can send and receive communication signals via network 719. Signals received by antenna 716 via communication network 719 are input to receiver 712, which can perform such common receiver functions as signal amplification, down-conversion, filtering, channel selection, and the like, and in the example system shown in Figure 7, analog-to-digital (AD) conversion. AD conversion of a received signal allows more complex communication functions such as demodulation and decoding to be performed on the DSP 720. Similarly, the signals to be transmitted are processed, including modulation and encoding, for example, by DSP 720 and inputs to transmitter 714 for digital-to-analog conversion, up-frequency conversion, filtering, amplification and transmission over communication network 719 via antenna 718. The DSP 720 not only processes the communication signals, but also provides Control for receiver and transmitter. For example, the gains applied to communication signals in the receiver and transmitter 712 714 can be adaptively controlled through automatic gain control algorithms implemented in the DSP 720.
Network 719 can further communicate with various systems, including a server 760 and other elements (not shown). For example, network 719 can communicate with both a business and an internet client system in order to accommodate multiple customers with varying levels of service.
UE 700 preferably includes a microprocessor 738, which controls the general operation of the device. Communication functions, including at least data communications, are performed through communication subsystem 711. Microprocessor 738 also interacts with subsystems of additional devices, such as screen 722, flash memory 724, random access memory (RAM) 726 , auxiliary input/output (I/O) subsystems 728, serial port 730, keyboard 732, speaker 734, microphone 736, a short-range communications subsystem 740, and other device subsystems, commonly designated as 742.
Some of the subsystems shown in Figure 7 perform communication-related functions, while the other subsystems can provide on-device or "resident" functions. Notably, some subsystems, such as keyboard 732 and display 722, for example, can be used for both communication-related functions, such as entering a text message for transmission over a communications network, and device-resident functions such as a calculator or to-do list.
The operating system software used by microprocessor 738 is preferably stored on persistent storage, such as flash memory 724, which may alternatively be a read-only memory (ROM) or similar storage element (not shown) . Those skilled in the art will appreciate that the operating system, device-specific applications, or parts thereof, can be temporarily loaded into volatile memory such as RAM 726. Received communication signals can also be stored in RAM 726. In addition, a unique identifier it is also preferably stored in read-only memory.
As shown, flash memory 724 can be grouped into different areas for both computer programs 758 and program data storage 750, 752, 754 and 756. These different types of storage indicate that each program can allocate a portion of flash memory 724 for your own data storage requirements. The microprocessor 738, in addition to its operating system functions, preferably allows software applications to run on the mobile device. A predetermined set of applications that control basic operations, including at least voice and data communications applications, for example, will normally be installed in the UE 700 during manufacturing. A preferred software application might be a personal information manager (PIM) application having the ability to organize and manage data items related to the mobile device user, such as, but not limited to, email, calendar of events, post voicemail, appointments, and to-do items. Naturally, one or more memory stores will be available on the mobile device to facilitate the storage of PIM data items. Such a PIM application would preferably have the ability to send and receive data items via the wireless network 719. In a preferred embodiment, the PIM data items are seamlessly integrated, synchronized, and updated over the wireless network 719 with the items. of corresponding mobile device user data stored on or associated with a host computer system. Other applications can also be loaded onto mobile device 700 via network 719, an auxiliary I/O subsystem 728, serial port 730, short-range communications subsystem 740, or any other suitable subsystem 742, and installed by a user in RAM 726 or preferably a non-volatile storage (not shown) for execution by the microprocessor 738. Such flexibility in installing the application increases the functionality of the device and may provide improved functions on the device, and functions related to communication, or both. For example, secure communications applications can enable e-commerce functions and other financial transactions to be performed using the UE 700. These applications will, however, in accordance with the foregoing, in many cases have to be approved by a carrier.
In a data communication mode, a signal received as a text message or web page download will be processed by communication subsystem 711 and input to microprocessor 738, which preferably processes the received signal to return to the screen. 722, or alternatively to an auxiliary I/O device 728. A user of UE 700 may also compose data items, such as email messages, for example, using keyboard 732, which is preferably a full alphanumeric keypad or telephone type keypad, together with display 722 and possibly an auxiliary I/O device 728. Such composite items can then be transmitted over a communication network via communication subsystem 711.
For voice communications, the overall operation of UE 700 is similar, except that received signals would preferably be returned to a speaker 734 and signals for transmission would be generated by a microphone 736. alternative audio or voice, such as a voice message recording subsystem, may also be implemented in UE 700. Although the voice or audio signal output is preferably performed primarily through speaker 734, screen 722 may also be used to provide an indication of the identity of a calling party, the duration of a voice call, or other information related to the voice call for example.
Serial port 730 in Figure 7 would typically be implemented on a personal digital assistant (PDA) type mobile device so synchronization with the user's computer (not shown) might be desirable. Such a port 730 would allow the user to set preferences through an external device or software application and would extend the capabilities of mobile devices 700 by providing the information or software downloads to UE 700 other than through a wireless communication network. The alternative download path can, for example, be used to upload an encryption key to the device via a direct connection and is therefore trusted and trusted, to thereby allow secure device communication.
Alternatively, the serial port 730 can be used for other means of communication, which can include as a universal serial bus (USB). An interface is associated with serial port 730.
Other communications subsystems 740, such as a short-range communications subsystem, is an optional additional component that can provide communication between UE 700 and different systems or devices, which need not necessarily be similar devices. For example, subsystem 740 may include an infrared device and associated circuitry and components or a Bluetooth™ communication module to provide communication with similarly enabled systems and devices.
Reference is now made to Figure 8. Figure 8 is a block diagram of a communication system 800 that includes a UE 802 that communicates over the wireless communication network.
UE 802 communicates via wireless network with one or several B nodes 806. Each B node 806 is responsible for air interface processing and some radio resource management functions. Node B 806 provides functionality similar to a Base Transceiver Station in some GSM/GPRS networks.
The wireless link shown in communication system 800 of Figure 8 represents one or more different channels, typically different radio frequency (RF) channels and associated protocols used between the wireless network and UE 802. The Uu 804 air interface is used between UE and 802 node B 806.
An RF channel is a limited resource that must be conserved, typically due to the total bandwidth limits and limited battery power of the UE 802. Those skilled in the art will appreciate that a wireless network in current practice can include hundreds of cells. , depending on the desired overall extent of network coverage. All pertinent components can be connected by multiple switches and routers (not shown), controlled by multiple network controllers.
Each node B 806 communicates with a radio network controller (RNC) 810. The RNC 810 is responsible for controlling the radio resources in its area. An 810 RNC controls multiple B 806 nodes.
The RNC 810 in UMTS networks provides equivalent functions for base station controller (BSC) functions in GSM/GPRS networks. However, an RNC 810 includes more intelligence, including, for example, autonomous transfer management without involving MSCs and SGSNs.
The interface used between node B 806 and RNC 810 is a lub 808 interface. An NBAP signaling protocol (application part of node B) is mainly used, as defined in 3GPP TS 25.433 V3.11.0 (2002-09) and 3GPP TS 25.433 V5.7.0 (2004-01). The Universal Terrestrial Radio Access network (UTRAN) 820 comprises the RNC 810, node B 806 and the air interface Uu 804.
Circuit-switched traffic is routed to Mobile Switching Center (MSC) 830. MSC 830 is the computer that places calls, and carries and receives subscriber or PSTN data (not shown).
The traffic between RNC 810 and MSC 830 uses the lu-CS interface 828. The lu-CS interface of 828 is the circuit switched connection for the (typically) transport of voice and signaling traffic between UTRAN 820 and the voice network of core. The main signaling protocol used is RANAP (Radio Access Network Application Part). The RANAP protocol is used in UMTS signaling between the 821 core network, which can be an MSC 830 or SGSN 850 (defined in more detail below) and UTRAN 820. The RANAP protocol is defined in 3GPP TS 25.413 V3.11.1 (2002- 09) and TS 25.413 V5.7.0 (2004-01).
For all 802 UEs registered with a network operator, permanent data (such as the UE 802 user profile) as well as temporary data (such as the current UE 802 location) are stored in a home location record (HLR) 838. In the case of a voice call to UE 802, HLR 838 is consulted to determine the current location of UE 802. A Visitor Location Register (VLR) 836 of MSC 830 is responsible for a group of location areas and stores the data of those mobile stations that are currently in your area of responsibility. This includes portions of the permanent mobile station data that were transmitted from the HLR 838 to the VLR 836 for quick access. However, the VLR 836 of MSC 830 can also assign and store local data, such as temporary IDs. UE 802 is also authenticated in system access by HLR 838.
Data packet is routed through Service GPRS Support node (SGSN) 850. SGSN 850 is the gateway between the RNC and the core network in a GPRS/UMTS network and is responsible for delivering data packets to and from the UEs within its geographic service area. Lu-PS interface 848 is used between the RNC 810 and SGSN 850, and is the packet switched connection for the (typically) transport of data traffic and signaling between the UTRAN 820 and the core data network. The main signaling protocol used is RANAP (described above).
The SGSN 850 communicates with the Gateway GPRS Support node (GGSN) 860. The GGSN 860 is the interface between the UMTS/GPRS network and other networks such as the Internet or private networks. The GGSN 860 is connected to a public data network PDN 870 through a Gi interface.
Those skilled in the art will appreciate that wireless networking can be connected to other systems, possibly including other networks, not explicitly shown in Figure 8. The network will normally be transmitting at least some sort of paging and system information on a continuous basis, even if there is no real packet data exchanged. Although the network consists of many parts, these parts all work together to result in certain behaviors in the wireless connection. Figure 11 illustrates a representation, shown generally at 1102, representative of UE operation in accordance with multiple simultaneous packet data communications service sessions. Here, two packet data services, each associated with a particular PDP context designated as PDP1 and PDP2 are simultaneously active. Plot 1104 represents the PDP context enabled for the first packet data service, and plot 1106 represents the radio resource assigned to the first packet data service. And, plot 1108 represents the PDP context enabled for the second packet data service, and plot 1112 represents the radio resource assigned to the second packet data service. The UE requests radio access bearer allocation via a service request, indicated by segments 1114. And, the UE also requests radio bearer service release, indicated by segments 1116 under an embodiment of the present disclosure. Service requests and service releases for different services are independent of each other, that is, they are generated independently. In the exemplary illustration of Figure 11, the PDP context and the radio resource for the associated PDP context are sometimes allocated substantially simultaneously. And, the release of radio resources is granted at the request of the UE, as shown, or when the RNC (Radio Network Controller) decides to release the radio resource.
Responsive to a radio resource release request, or other decision to release the radio resource, the network selectively drops the radio resources associated with the packet data service. Radio release requests are made on a radio bearer-bearer access radio access basis and not on an entire signaling connection basis, thus allowing for improved granularity control of resource allocation.
In the exemplary implementation, a single packet data service is further moldable as a primary service and one or more secondary services, as indicated by designations 1118 and 1122. primary and secondary, whose radio resource allocations are no longer needed, or are not desired to be released. Efficient radio resource allocation is thus provided. In addition, the optimal use of the processor in the
UE is provided since processor power that would have been allocated to unnecessary processing can now be better used for other purposes. Figure 12 illustrates the parts of the communication system 800, viz. the UE 802 and the radio network controller (RNC)/SGSN 810/850 operating under an embodiment of the present disclosure pertaining to multiple service sessions of contiguous packet data. The UE includes an apparatus 1126 and the RNC/SGSN includes an apparatus 1128 of an embodiment of the present disclosure. The elements that make up the apparatus 1126 and 1128 are functionally represented, implementable in any desired manner, including algorithms executable by processing circuitry, as well as hardware or firmware implementations. The elements of apparatus 1128, while represented to be incorporated in the RNC/SGSN, are, in other implementations, formed elsewhere in other network locations, or distributed in more than one network location.
Apparatus 1126 includes a detector 1132 and a transition indication sender 1134. In an exemplary implementation, elements 1132 and 1134 are incorporated into a session management layer, e.g., the defined Non-Access Strata (NAS) layer. in UMTS, from the EU.
In another exemplary implementation, elements are embedded in an access layer (AS) sublayer. When implemented in the AS sublayer, elements are implemented as a portion of a connection manager, shown in 1136. When implemented in this way, elements do not need to be aware of PDP context behavior or application layer behavior.
The detector detects when a determination is made to send a transition indication associated with a packet communication service. The determination is made, for example, at an application layer, or another logical layer, and provided to the session management layer and the detector built in there. Indications of detections made by the detector are provided to the radio resource release indication sender. The sender generates and causes the UE to send a transition indication that forms the service release request 1116, shown in Figure 11.
In a further implementation, the transition indication includes a cause field containing a cause, such as any of the aforementioned causes described here and above, as appropriate, or the cause field identifies a preferred state in which the UE prefers the network to cause the UE to be transferred.
Apparatus 1128 incorporated into the network includes an examiner 1142 and a guarantor 1144. The examiner examines the transition indication when received at that location. And, the transition guarantor 1144 selectively operates for UE transition, as requested in the transition indication.
In an application where signaling is performed at a radio resource control layer (RRC), the radio network controller (RNC), rather than the SGSN, performs the scan and transition of the UE. And, correspondingly, the apparatus incorporated in the UE is formed in the RRC layer, or the apparatus otherwise causes the generated indication to be sent at the RRC level.
In an exemplary control flow, an upper layer informs the NAS/RRC layer, as appropriate, that the radio resource is assigned to a particular PDP context that is no longer needed. An RRC layer indication message is sent to the network. The message includes a RAB ID or RB ID which, for example, identifies the packet data service to the radio network controller. And, in response, the operation of the radio network controller triggers a procedure to resolve to terminate the radio resource release, radio resource reset, radio resource control (RRC) connection release message to be returned to o EU. The RNC procedure is, for example, similar to, or equivalent to, the procedure presented in document 3GPP TS 23.060, Section 9.2.5. The RAB ID is, for example, advantageously used as the identification is the same as the Network Service Access Point Identifier (NSAPI), which identifies the associated PDP context, and application layers generally have knowledge of NSAPI.
In a specific example, a radio resource release indication formed in, or otherwise provided to the RRC layer, and sent at the RRC layer is represented, along with associated information, below. The indication when incorporated into the RRC layer is also referred to as, for example, an indication of release of radio resources.

Figure 13 illustrates a message sequence diagram, shown generally at 1137, representing exemplary signaling generated in accordance with the release of radio resources associated with a PDP context, such as that graphically represented in the portion of the graphical representation shown in Figure 11 The release is initiated either by the UE or at the RNC, or another UTRAN entity. When initiated in the UE, for example, the UE sends an indication of release of radio resources to the UTRAN.
Upon initiation, a radio access carrier (RAB) release request is generated and sent, indicated by segment 1138 by the RNC/UTRAN and delivered to the SGSN. In response, a RAB allocation request is returned, indicated by segment 1140, to the RNC/UTRAN. And then, as indicated by segment 1142, the radio resources extending between the UE 802 and the UTRAN are released. A response is then sent, as indicated by segment 1144. Figure 14 illustrates a message sequence diagram shown generally at 1147, similar to the message sequence diagram shown in Figure 13, but here where resources of a final PDP context are released. Upon initiation, the RNC generates an Iu release request 1150 is communicated to the SGSN and responsive to it, the SGSN returns an Iu release command, indicated by segment 1152. After that, and as indicated by segments 1154, the radio bearer formed between the UE and the UTRAN is released. And, as indicated by segment 1156, the RNC/UTRAN returns a complete lu release to the SGSN. Figure 15 illustrates a method flowchart, shown generally at 1162, representative of the process of an embodiment of the present disclosure for releasing radio resources allocated according to a PDP context.
Upon initiation of the process, indicated by block 1164, a determination is made, indicated by decision block 1166, as to whether a radio resource release indication has been received. If not, the branch is not taken to the final 1168 block.
If, on the contrary, a radio access bearer release was requested, the yes branch is taken to decision block 1172. In decision block 1172, a determination is made as to whether the radio access bearer should be released. is the final radio access bearer to be released. If not, the branch is not taken to block 1178, and the preferred state is set. Then radio access bearer release procedures are performed, as shown in Figure 13 or, as described in 3GPP Document Section 23.060, subitem 9.2.5.1.1.
Conversely, if a determination is made in decision block 1172 that the RAB is the last to be released, the branch yes is taken to block 1186, an lu release process such as shown in Figure 14 or as described in document 3GPP section 23.060, subitem 9.2.5.1.2 is carried out. Figure 16 illustrates a method flowchart, shown generally at 1192, representative of the process of an embodiment of the present disclosure for releasing radio resources allocated according to a PDP context.
After the process starts, indicated by block 1194, a determination is made, indicated by decision block 1196 as to whether there is a RAB (Radio Access Carrier) to release. If not, the branch is not taken to the final block 1198.
If, on the contrary, a radio access bearer release was requested, the yes branch is taken to decision block 1202. In decision block 1202, a determination is made as to whether the radio access bearer should be released. is the final radio access bearer to be released. If not, the branch is not taken to block 1204, where the RAB list is set, block 1206 where the preferred state is set, and block 1208 where radio access bearer release procedures are performed, such as shown in Figure 13 or as described in 3GPP document Section 23,060, subitem 9.2.5.1.1.
Conversely, if a determination is made in decision block 1202 that the RAB is the last to be released, the yes branch is taken to block 1212, and the domain is defined as PS (packet switched). Then, as indicated by block 1214, a release cause is defined. And, as indicated by block 1216, a SIGNALING CONNECTION RELEASE INDICATION is sent on a DCCH. An lu release procedure such as the one shown in Figure 14 or as described in 3GPP document section 23,060, subitem 9.2.5.1.2 is performed.
Figure 17 illustrates a method, shown generally at 1224, representative of the method of operating an embodiment of the present disclosure. The method facilitates efficient use of radio resources in a radio communication system that provides simultaneous operation of a first packet service and a second packet service. First, and as indicated by block 1226, detection is made by selecting to release a radio resource associated with a packet service selected from the first packet service and the second packet service. Then, and as indicated by block 1228, a radio resource release indication is sent responsive to detection of selection to release the radio resource.
Then, at block 1212 the indication of release of radio resources is examined and then at block 1214 the guarantee of release of the radio bearer is selectively guaranteed.
In another embodiment, the network may initiate a transition based on both the receipt of an indication from the user equipment or another network element and a radio resource profile for the user equipment.
An indication as received from user equipment or other network element may be any of the different transition indications described above. The indication may be passive and therefore merely a blank indication that a less battery intensive radio state should be entered. Alternatively the indication may be part of the regular indications sent from the UE that the network determines, possibly over time or a series of received indications, and the UE's radio resource profile that a less battery or resource intensive radio state radio must be entered. Alternatively, the indication can be dynamic and provide information to the network element about a preferred state or mode in which to transfer. As with the foregoing, the indication may contain a cause for the indication (eg normal or abnormal). In an additional modality, the indication may provide other information about a radio resource profile, such as a probability that the user equipment is correct about the ability to transition to a different state or mode, or information about the application (s ) that triggered the indication.
An indication of another network element may include, for example, an indication of a push-to-talk media or network entity. In this example, the indication is sent to the network entity responsible for the transition (for example, the UTRAN) when traffic conditions allow. This second network entity can look at traffic at an Internet Protocol (IP) level to determine if and when to send a transition indication.
In an additional modality, the indication of the UE or second network element can be implicit rather than explicit. For example, an indication of transition may be implied by the network element responsible for the transition (e.g., the UTRAN) from device status reports in outgoing traffic measurements. Specifically, status reports can include a radio link buffer state where, if there is no output data, it can be interpreted as an implicit indication. Such Status Reports can be a measure that can be repeatedly sent from the UE that does not request or indicate anything by itself.
The indication may thus be any signal and may be application-based, radio resource-based, or a composite indication providing information about all the application and radio resources of the User Equipment. The above description is not intended to be limiting to any particular indication, and one skilled in the art would appreciate that any indication can be used with the present method and disclosure.
Reference is now made to Figure 18. The process begins at step 1801 and proceeds to step 1810 in which a network element receives the indication.
Once the network receives the indication in step 1810, the process proceeds to step 1820 where a Radio Resource Profile for the user equipment, optionally, is checked.
The term "radio resource profile" as used herein is intended to be a broad term that can be applied to a variety of situations depending on the requirements of a network element. Generally speaking, the radio resource profile includes information about radio resources used by user equipment.
The radio resource profile can include one or both static and dynamic profile elements or negotiated profile elements. Such elements may include an "inhibit duration and/or maximum indication/request message duration per time window" value, which may be part of the radio resource profile, within or apart from the transition profile, and may be traded or static.
Static profile elements can include one or more of the quality of service for a radio resource (for example, RAB or RB), a PDP context, an APN that the network is aware of, and a subscriber profile.
As will be appreciated by those skilled in the art, various levels of quality of service can exist for a radio resource and the level of quality of service can provide information to a network to transition to a different state or mode. Thus, if quality of service is in the background, the network element can consider transitioning to idle mode more easily than if quality of service is defined as interactive. Furthermore, if multiple radio resources have the same quality of service, this can provide an indication to the network about the possibility of transitioning the mobile device to a more suitable state or mode or bringing the radio resources down. In some modalities, a primary and secondary PDP context can have a different quality of service, which can also affect the decision to perform a state/mode transition.
In addition, the APN can provide the network with information about the typical services that the PDP context uses. For example, if the APN is xyz.com, where xyz.com is typically used to provide data services such as email, this can provide an indication to the network as to whether or not to transition to a state or different way. This can further indicate routing characteristics.
In particular, the present method and apparatus may use the Access Point Name (APN) specified by the UE to define the transition profile between various states. This may be another way to describe the UE signature. As will be appreciated, the Home Location Register (HLR) can store relevant information about the subscribers, and can provide the radio network controller (RNC) with the signature of the UE. Other network entities can also be used to store subscription information centrally. Whether using the HLR or another network entity, the information is preferably pushed to other network components such as the RNC and SGSN, which map the signature information to relevant physical parameters used during data exchange.
The UTRAN can include or have access to a database or table in which various APNs or QoS parameters can be linked to a specific transition profile. Thus, if the UE is an always in the device, this will be apparent from the APN and an appropriate transition profile for that APN may be stored in the UTRAN as part of the radio resource profile or be remotely accessible by the UTRAN. Similarly, if QoS or a part of the QoS parameter is used, or a specific message sent with a profile, this can mean for the
UTRAN that a particular transition profile is desired based on a database query or a table lookup. Furthermore, a multiplicity of behaviors in addition to the connected state transition profile of RRC can be specified by this means. These include, but are not limited to: rate adaptation algorithms (step periodicity/step size); initial guaranteed radio bearer; maximum guaranteed radio carrier; minimize call setup time (avoids unnecessary steps such as traffic volume measurements), and the air interface (GPRS/EDGE/UMTS/HSDPA/HSUPA/LTE, etc.)
Also, if there are multiple PDP contexts that have different QoS requirement but share the same APN IP address, such as primary context, secondary context, and so on, a different transition profile can be used for each context. This can be signaled to the UTRAN through dedicated messages or QoS.
If multiple active PDP contexts are used simultaneously, the lowest common denominator between the contexts can be used. For RRC state transition, if an application has a first PDP context that is associated with a transition profile where the system moves from CELL_DCH state to an idle or CELL_PCH state quickly, and a second PDP context is associated with a transition profile where the system must stay in the CELL_DCH state longer, the second profile where the CELL_DCH state is held longer will overwrite the first profile.
As will be appreciated by those skilled in the art, the lowest common denominator can be considered in two different ways. The lowest common denominator, as used here, implies a longer time required before transitioning to a different state. In a first modality, the lowest common denominator can be the lowest of the activated PDPs. In an alternative modality, the lowest common denominator may be the lowest of the PDPs that actually have active radio resources. Radio resources can be multiplexed in a number of different ways, but the end result is the same.
An exemplary case for these methods can always be drawn on devices. As described, various QoS parameters or APNs can be linked to specific forever-on behavior. Consider the initially guaranteed radio capabilities which may desirably be based on an "always on" profile. The network now has a way to "know" that data bursts are short and bursts for always-on applications such as email. For those skilled in the art, it is clearly seen that, given this information, there is no incentive to save code space to truncate network efficiency. Thus, a maximum rate can be assigned to an always-on device with little risk of not reserving enough code space for other users. In addition, the UE benefits in faster data reception and also battery life savings due to less "on time". Again, for those skilled in the art, high data rates have very little effect on current consumption since power amplifiers are totally biased, regardless of data rate.
In the above modality, a lookup table can be used by the UTRAN to determine the resource control profile for the radio resource(s) being assigned to different applications for a given RRC connection to the UE. The profile can be based on user signature and stored on the network side in a network entity such as HLR or alternatively in the RNC as the RNC will have more up-to-date traffic resources available (ie data rates that can be granted). If higher data rates can be achieved then shorter timeouts may be possible.
Instead of APN, other alternatives such as Quality of Service (QoS) parameters defined in a Packet Data Protocol Context (PDP) activation or modified PDP context can be used. The QoS field can further include the QoS "allocation retention priority (Service data unit can be used to infer traffic data volumes)", in case of multiple PDP contexts sharing the same APN address or a subscription profile to define the transition profile. Additional alternatives include dedicated messages like the above indication message to signal a resource control profile and information such as inhibition duration and/or maximum indication/request messages per time window value.
The transition profile included in the radio resource profile may further include whether the state of the UE should transition in general based on the application type. Specifically, if the user equipment is being used as a data modem, a preference can be set on the user equipment such that transition indications are not sent or if knowledge of the preference is maintained on the network, that any transition indication received from the UE while being used as a data modem should be ignored. Thus, the nature of the applications running on the user equipment can be used as part of the radio resource profile.
An additional parameter of a transition profile can involve the type of transition. Specifically, in a UMTS network, user equipment may prefer to go into a Cell_PCH state rather than going into an idle state for various reasons. One reason might be that the UE needs to connect to a Cell_DCH state faster if data needs to be sent or received, and therefore moving to a Cell_PCH state will save some network signaling and battery resources while still providing a quick transition to the Cell_DCH state. The above description is equally applicable in non-UMTS networks and can provide a transition profile between various connected and idle states.
The transition profile may also include various timers, including, but not limited to, inhibit duration and/or maximum indication/request messages per time slot, delay timers and inactivity timers. Delay timers provide a period the network element will wait before transitioning to a new state or mode. As will be appreciated, even if the application has been idle for a particular period of time, a delay can be beneficial to ensure that there is no additional data received or transmitted from the application. An inactivity timer can measure a predetermined period of time when there is no data received or sent by an application. If data is received before the inactivity timer expires, normally the inactivity timer will be reset. Once the inactivity timer expires, the user equipment can then send step indication 1810 to the network. Alternatively, the user equipment may wait for a certain period, such as that defined for the delay timer, before sending step indication 1810.
Furthermore, the delay timer or inhibition duration and/or maximum indication/request messages per time slot can vary according to a profile that is provided to the network element. Thus, if the application that requested a transition to a different mode or state is a first type of application, such as an email application, the delay timer on the network element can be set to a first delay time, while the application is of a second type, like an instant messaging application, the timer can be set to a second value. The values of inhibition duration and/or maximum indication/request messages per time window, delay timer or inactivity can also be obtained by the network based on the APN used for a particular PDP.
As will be appreciated by those skilled in the art, the inactivity timer can also vary according to the application used. Thus, an email application may have a shorter inactivity timer than a browser application since the email application is waiting for an unobtrusive message after which it cannot receive data. On the other hand the browser application can use the data even after a long delay and therefore requires a longer inactivity timer.
The transition profile can also include a probability that a user equipment is correct requesting a transition. This can be based on compiled statistics about the accuracy rate of a specific user equipment or user equipment application.
The transition profile can further include multiple discontinuous receive time (DRX) values. In addition, a progression profile for DRX times can be provided in a transition profile.
The transition profile can be defined on an application-by-application basis or be a composite of various user equipment applications.
As will be appreciated by those skilled in the art the transition profile can be dynamically created or modified when a radio resource is assigned and can be done in subscription, PS registration, PDP activation, RAB or RB activation or modified during runtime for the PDP or RAB/RB. The transition profile may also be part of step indication 1810. In this case, the network may consider the preferred RRC state indication to determine whether to allow the transition and for what state/mode. Modification can occur based on available network resources, traffic patterns, and others.
The radio resource profile is therefore composed of static and/or dynamic fields. The radio resource profile used by a particular network may vary from other networks and the above description is not intended to limit the present method and system. In particular, the radio resource profile may include or exclude various elements described above. For example, in some cases the radio resource profile merely includes the quality of service for a particular radio resource and includes any other information. In other cases, the radio resource profile will only include the transition profile. In still other cases, the radio resource profile will include all of the quality of service, APN, PDP context, transition profile, among others.
Optionally, in addition to a radio resource profile, the network element can also use safeguards to avoid unnecessary transitions. Such safeguards may include, but are not limited to, the number of indications received in a predetermined period of time, the total number of indications received, traffic patterns and historical data.
The number of indications received in a predetermined period of time can indicate to the network that a transition should not take place. Thus, if the user equipment has sent, for example, five indications within a thirty-second period, the network may feel that it should ignore the indications and not perform any transitions. Alternatively, the network may determine to indicate to the UE that it should not send any further indications either indefinitely or for some configured or predefined period of time. This can be independent of any "inhibit duration and/or maximum indication/request messages per time window" in the UE.
Furthermore, the UE can be configured not to send additional indications for a configured, predefined or negotiated period of time. The UE configuration can be exclusive to the safeguards on the network side described above.
Traffic patterns and historical data can provide an indication to the network that a transition should not occur. For example, if the user received a significant amount of data in the past between 8:30 and 8:35 Monday to Friday, if the referral is received at 8:32 on Thursday, the network may decide that it should not transfer the user equipment, as more data is likely before 8:35.
If multiple radio resources are allocated to user equipment, the network may need to consider the complete radio resource profile for user equipment. In this case, the radio resource profiles for each radio resource can be examined and a composite transition decision made. Based on the radio resource profile of one or multiple radio resources, the network can then decide whether or not a transition should be made. AN ADDITIONAL LIMITATION OF TRANSITION INDICATIONS
As described above, there are several mechanisms by which a UE can transition to its current RRC state. Initiation for the transition may have been entirely network driven, for example, as a result of observed inactivity. In this example, the network maintains inactivity timers for each of the RRC states. If the inactivity timer for the current RRC state of the UE expires, then the network will send an RRC reset message to transition the UE to a different state. Alternatively, the initiation of the transition may have been conducted by the UE using a transition indication mechanism as described above (e.g. with use of a transition indication message). Since the network has control of the RRC state machine, in this case the UE can send an indication to the network that it does not need to be kept in the current RRC state and is requesting a transition to a less-consuming RRC state of battery.
In one embodiment, a limitation is placed on the UE's ability to transmit a transition indication that is a function of whether or not the UE underwent the most recent transition to its current state as a result of a previously transmitted transition indication. by the EU.
In another embodiment, the number of transition indications the UE can send in its current state is a function of whether or not the UE underwent the most recent transition to its current state as a result of a transition indication previously transmitted by the HUH.
In another embodiment, the number of transition indications the UE can send in specific states is limited, regardless of the mode in which the UE was most recently transitioned to its current state, where the current state is one of the specific states that this limitation applies. INHIBIT ANY ADDITIONAL TRANSMISSION INDICATION FOLLOWING A RRC STATUS CHANGE OF A PREVIOUSLY TRANSMITTED TRANSMISSION INDICATION.
In some embodiments, if the UE is in its current state as a result of having previously transmitted a transition indication, the UE is inhibited from transmitting any further transition indications while in this current state.
The UE may maintain a flag, bit symbol, or other indicator that indicates whether the UE is authorized to send transition indications to the network while it remains in its current state. If the UE is reconfigured by the network to a new RRC state (for example, the network sends a UE reconfiguration message to effect a transition to the new RRC state) after sending a transition indication to the network, then that flag, symbol bits, or other flag is set (or alternatively cleared), indicating that the UE is not allowed to send further transition indications while remaining in this current state. If the UE changes its RRC state due to a data transaction request by the UE (for example, because its buffer shows that it has data to be sent) or by the network (for example, because the network has paged the UE), in then this indicator is cleared (or alternatively set) to indicate that the UE is once again allowed to send a transition indication to the network. INHIBIT MORE THAN A PREDETERMINED NUMBER OF TRANSITION INDICATIONS FOLLOWING A RRC STATE CHANGE FROM A PREVIOUSLY TRANSMITTED TRANSITION INDICATION
In some embodiments, if the UE is in its current state as a result of having previously transmitted a transition indication, the UE is inhibited from transmitting no more than a predetermined maximum number of additional transition indications while the network maintains the UE in this same current state. In some embodiments, the predetermined number is encoded in the UE. In other embodiments, the predetermined number is configured by the network, and is subject to change as the UE moves between different networks. Network configuration can take place, for example, using a signaling message directly to the mobile station, or as a portion of a broadcast message.
The UE maintains a flag, bit symbol, or other indicator that indicates whether the UE is authorized to send a fixed number of transition indications to the network while it remains in its current state. If the UE has transitioned to that current state as a result of having sent a transition indication in a previous state, then this flag, bit symbol, or other indicator will be set. If the UE transitioned to this current state as a result of normal network oriented transitions based on inactivity timers, for example, then this flag, bit symbol, or other indicator will not be set and there will be no restrictions on the number of indications that the UE can send in its current state.
In the case where the flag, bit symbol, or an indicator is set indicating that the UE is only allowed to send a fixed number of transition indicators to the network while remaining in this current state, the UE may in addition maintain a counter that counts the number of transition indications that are sent by the UE after it has determined that it has just transferred to its current state as a result of a previously transmitted transition indication.
In this example, if once in the current state, the UE subsequently wants to transmit a transition indication from this current state, it first looks at the flag, bit symbol or other indicator to see if it has limited the number of transition indications. it can send to the network while it remains in its current state. If limited, then the UE keeps counting the number of transition indications it sends provided in the network response so the transition indicator is to move the UE to its current RRC state (in the case where the UE need to transition to another state of RRC to send the transition indication message) or leave the UE in its current state (in the case where the UE can send the transition indicator in its current state).
If, when the UE compares the value of its transition indication counter to the predetermined maximum number of additional transition indications allowed (possibly indicated by a flag, bit symbol, or other), the value of the transition indication counter is greater than this predetermined maximum number, then the UE will not subsequently send further transition indications to the network.
If the result of a transition indication sent by the UE is that the UE is transferred to a different RRC state from its current state (e.g., by a reconfiguration message sent by the network) before sending the transition indication, this is more battery intensive than the current state, the counter is reset and the process starts again in the new current state. This would be the case, for example, if the end result is that the UE is reconfigured from a PCH to CELL_FACH.
If the UE changes RRC state due to a data transaction request by the UE (eg because its buffer shows that it has data to be sent) or by the network (eg because the network paged the UE), then , this indicator is cleared (or, alternatively set) to indicate that the UE is once again allowed to send a transition indication to the network and the counter is reset. INHIBIT MORE THAN A PREDETERMINED NUMBER OF TRANSITION INDICATIONS
In some embodiments, the UE is inhibited from transmitting no more than a predetermined maximum number of transition indications while the network maintains the UE in its current state. In some embodiments, the predetermined number is encoded in the UE. In other embodiments, the predetermined number is configured by the network, and is subject to change as the mobile station moves between different networks. Network configuration can take place, for example, using a signaling message directly to the mobile station, or as part of a broadcast message.
The UE maintains a counter that counts the number of transition indications that are sent by the UE after its current state. Therefore when transferring to the current state, and the UE subsequently wants to transmit a transition indication from this current state, then the UE keeps counting the number of transition indications and it sends the network response provided to the transition indicator which is to return the UE to its current RRC state (in the case where the UE needs to transition to another RRC state to send the transition indication message) or to leave the UE in its current state (in the case where the UE can send the transition indicator in its current state).
If, when the UE compares its transition indication counter value with the predetermined maximum number of additional transition indications, the transition indication counter value is greater than this predetermined maximum number, then the UE will not send subsequently additional transition indications for the network.
If the result of a transition indication sent by the UE is that the UE is reset to an RRC state different from its current state before sending the transition indication, and the different RRC state is more battery intensive than the state current, then the counter is reset and the process starts again in the new current state.
If the UE changes its RRC state due to a data transaction request by the UE (eg because the buffer shows that it has data to be sent) or by the network (eg because the network paged the UE), in then this indicator is cleared (or, alternatively set) to indicate that the UE is once again allowed to send a transition indication to the network and the counter is reset.
Whether or not there is a state transition that resulted from having previously transmitted a transition indication can be used to enable/disable or limit the further transmission of transition indications in several ways: 1) a prerequisite to allow the transmission of a transition indication is that the previous state transition must not have been the result of the UE having previously transmitted a transition indication. This prerequisite may be combined with other prerequisites or disallows such that satisfaction of the prerequisite alone may not necessarily allow the UE to transmit a transition indication. 2) a prerequisite for allowing the transmission of a transition indication is that, if the previous state transition was the result of the UE having previously transmitted a transition indication, no more than a defined number of transition indications were transmitted by the EU. This prerequisite may be combined with other prerequisites or disallows such that satisfaction of the prerequisite alone may not necessarily allow the UE to transmit a transition indication. 3) if the previous state transition was the result of the UE having previously transmitted a transition indication, inhibit transmission of a transition indication. This is logically equivalent to 1) above. This inhibit can be combined with other prerequisites or inhibits such if the inhibit is not triggered, which alone may not necessarily allow the UE to transmit a transition indication. 4) if the previous state transition was the result of the UE having previously transmitted a transition indication, inhibit transmission of more than a defined number of transition indications. This is logically equivalent to 2) above. This inhibit can be combined with other prerequisites or inhibits such if the inhibit is not triggered, which alone may not necessarily allow the UE to transmit a transition indication. 5) if the previous state transition was not conducted by UE, allow transmission of a transition indication. 6) if the previous state transition was the result of the UE having previously transmitted a transition indication, allow transmission of only up to a defined number of transition indications. 7) for certain RRC states, allow transmission of only up to a defined number of transition indications. INTERACTION WITH INHIBITION TIMER
As indicated above, the prerequisite based on state transition or inhibition can be combined with other prerequisites or inhibitions. Arrangements have been described above, which inhibit a UE from sending a transition indication for some period of time after the previous sending of a transition indication. In some embodiments, this inhibition is combined with the state transition-based inhibition/prerequisite described above.
For example, the use of an inhibit timer was previously described as a mechanism to inhibit the UE from sending a transition indication for some period of time after the previous sending of a transition indication, where an inhibit timer is started after transmission of a transition indication, and the UE is allowed to send an additional transition indication only if the inhibit timer is not running. In some embodiments the use of this inhibit timer is combined with the transition inhibit state based on the following: previous state transition the result of the UE having previously transmitted a transition indication inhibit transmission of transition indication, or inhibit transmission of more than a defined number of subsequent transition indications for a previous transition that was the result of the UE having previously transmitted a transition indication, and is the inhibit timer running inhibit transmission of transition indication.
In some embodiments, these are the only two inhibits happening, in which case, the behavior can be summarized as follows: allow transmission of a transition indication if the inhibit timer is not running, and the current state was not the result of a previous transition indication transmitted by the UE, or allowing the transmission of a transition indication if the inhibit timer is not running, and if less than a defined number of transition indications have been transmitted subsequent to a state transition which was the result of the UE having previously transmitted a transitional indication. MAINTENANCE OF PRIOR STATE TRANSITION CAUSE
The UE has a mechanism to maintain an indication of whether the current state is a result of the previous transmission of a transition indication by the UE. This indication can be a previous state transition cause value stored in a memory in the UE that is accessible by a processor being part of the UE, or a switch implemented in hardware to name just a few examples. In a specific example, the previous state transition cause is a single bit which is a first value ('1' or '0') to indicate that the previous state transition is the result of the UE having previously transmitted a transition indication, and is otherwise a second value ('0' or '1'). EVALUATION OF CAUSE OF TRANSITION FROM PREVIOUS STATE
The UE has a mechanism to determine whether the current state is a result of the previous transmission of a transition indication by the UE.
If the UE sent the transition indication, and it has been recognized by the network so that the UE knows that the network has received it, then the UE can know that it receives an RRC reconfiguration message within a fixed period of time , that this RRC configuration message is a result of sending the transition indication.
If the UE receives an RRC reset and has not sent (and acknowledged) a transition indication within a predetermined period of time preceding the reset, the UE may assume that the state transition was not in response to the transmission of a transition indication. transition by the EU.
In a first example, each time a state transition occurs as a result of a reconfiguration by the network, the UE evaluates whether the state transition was the result of the UE having previously transmitted a transition indication. If this was the case, the UE updates the previous state transition cause to indicate that the previous state transition was driven by UE. If the state transition was different from the result of the UE having previously transmitted a transition indication, then the previous state transition cause is updated accordingly.
In some embodiments, where a transition with a cause value is supported, the UE determines whether it had previously sent a transition indication with a cause value so that this mechanism should be implemented before receiving this reset.
In some embodiments the UE performs the following steps to determine whether a state transition is the result of the UE having previously transmitted a transition indication: 1) transmits a transition indication (or transition indication with the particular cause value); 2) if a state transition that is consistent with the transition indication occurs within a defined time interval of transmitting the transition indication, evaluates the state transition to be the result of the UE having previously transmitted a transition indication, and otherwise it evaluates the state transition to be other than the result of the UE having previously transmitted a transition indication.
In some embodiments, when transmitting a transition indication, a timer is started starting counting down from a timeout value, or equivalently counting up to a timeout value. If the time is still running when the state transition occurs, then it is considered to be the result of the UE having previously transmitted a transition indication.
In some embodiments, any of these embodiments are implemented using a transition indication that includes a cause code to allow the UE to specify a cause for the transition indication (e.g., to indicate that a data transfer or call is complete , or that no additional data is expected for an extended period). A specific example is the CONNECTION SIGNALING RELEASE INDICATION defined in 3GPP TS 25.331 Section 8.1 0.14 where the cause code is IE "Cause of Signaling Connection Release Indication" defined for "data end of session PS requested by EU".
In some modalities, any of these modalities are implemented using a transition indication that does not include a cause code. A specific example is the CONNECTION SIGNALING RELEASE INDICATION defined in 3GPP TS 25.331 Section 8.1.14. ADDITIONAL EXAMPLE OF DETERMINING THE MECHANISM FOR THE RRC STATE TRANSITION
If the UE receives an RRC reconfiguration message from the network, it can determine whether it has sent a SCRI message with the cause value "UE-requested PS data end of session" before receiving this reconfiguration.
If the UE sent this message, and the message was recognized by the network so that the UE knows that the network has received it, then the UE can know that if it receives and RRC reconfiguration message within a fixed period of time, that this RRC configuration message is a result of sending the SCRI.
If the UE is in RRC CELL_DCH or CELL_FACH state and has sent a SCRI that has been acknowledged, but the network does not send an RRC reset within a fixed period of time, then the UE can assume that it is currently in the state the network wants that it remains, and the UE may consider that the mechanism by which it remains in that state is for Rapid Dormancy purposes.
If the UE receives an RRC reset and has not sent (and has acknowledged) a SCRI message the fixed period of time preceding the reset, the UE can assume that the state transition was not for Fast Dormancy purposes. SPECIFIC EXAMPLES
With reference to the state diagram of Figure 1, it is assumed that a UE is initially in the Cell_DCH 122 state. Thereafter, the UE transmits a transition indication, for example, about its determination that it has no more data to send . In response, the network recognizes the transition indication and transitions the UE to URA_PCH. In some modalities this is a direct state transition. In other embodiments, this is an indirect state transition, through the cell_FACH state. After that, the UE is not allowed to send another transition indication.
Note that, in general, the description of modalities and behavior that belong in the URA_PCH state also apply in the CELL_PCH state.
If, on the other hand, the network decides by itself to transition the UE to URA_PCH, for example, due to the expiration of an inactivity timer, the UE is allowed to send a transition indication. At this point, the UE is looking for the transition to idle mode of URA_PCH. However, the UE must transition to CELL_FACH to send the transition indication. Recall that the purpose of the transition indication is for the UE to move to a less battery intensive state. If the network leaves the UE in CELL_FACH, this is not a transition to a more battery efficient state (the only most battery efficient state from URA_PCH being IDLE) and so the CELL_FACH state is not considered to be a result of a transmission previous of a transition indication. If network transitions the UE to URA_PCH or IDLE mode within a defined period of time, then the state transition is considered as a result of a previous transmission of a transition indication. ANOTHER INHIBITION
In some arrangements, if the UE sent a transition indication that was acknowledged, but the network does not send an RRC reset within a fixed period of time, then the UE assumes that it is currently in the state that the network wants it to remain inside. In some embodiments, when this sequence of events occurs, the UE is inhibited from transmitting a transition indication, even though the current state may not necessarily be the result of the UE having previously transmitted a transition indication.
In some embodiments, the inhibition described above is only implemented if the state that the UE remains in is the state of RRC CELL_DCH or CELL_FACH. STATUS DUE TO RAPID DORMANCY
In some embodiments, when the UE is in a state that is a result of a previously transmitted transition indication, the UE is said to be in a state due to the fast dormancy invocation. In some arrangements, when the UE transmitted a transition indication that is acknowledged, but the UE does not undergo a state change, the UE is also said to be in a state due to the fast dormancy invocation.
If the UE is transferred to an RRC state (which is not idle) and this was not due to a transition indication (also referred to as a transition indication for fast dormancy purposes), then the UE uses the inhibit timer, in order to determine when sending a transition indicator for fast dormancy purposes is allowed. This behavior is described in 3GPP TS 25.331.
If the UE is transferred to an RRC state (which is not idle) and this was due to a transition indication, then the UE will have different restrictions on its behavior. The UE will set some kind of flag or indication internally when it knows it is in this situation. This can, for example, be referred to as the FDM (Rapid Dormancy Mechanism) flag.
In one case, the UE may be inhibited from sending an additional transition indication. Alternatively, the UE may be allowed to send new requests for a state transition, but the number of new requests is limited to a defined number, for example one or more. The period between sending these requests is controlled by the inhibit timer.
If when the UE requests a state transition using the transition indication (and this has been recognized) the network either leaves the UE in its current RRC state (eg to CELL_FACH) or moves it back to the RRC state from from which the transition indicator was sent from (eg UE was in CELL_PCH, moved to CELL_FACH to send SCRI, then network moved UE back to CELL_PCH), then UE decrements the number of Remaining transition indication requests that it is allowed to ship.
If the UE moves to a different RRC state because a data transaction is initiated (for example, it receives a page and is responding to it, or it requests resources for a data transaction), then the UE clears the FDM flag and the procedure is restarted.
If the UE makes a transition to CELL_FACH state to transmit a CELL_UPDATE message or an URA_UPDATE message and on network acknowledgment the UE is moved back to the CELL_PCH or URA_PCH state, then this does not clear the FDM flag.
If, however, the UE makes a transition to CELL_FACH state to transmit a CELL_UPDATE message or an URA_UPDATE message or a transition indication message, and the network subsequently leaves the UE in CELL_FACH state, then the UE clears the FDM flag and resets the process.
In some cases, the UE is prevented from sending the SCRI message entirely after the UE is transferred to a different RRC state in response to a fast sleep request using the SCRI message with the cause value "PS data end session requested by the EU". In this case, the UE sets the FDM flag and only clears this flag when it moves to a different RRC state for a data transaction that is initiated by the UE or the network.
In some cases, the UE is only allowed a predefined maximum number of transition indication messages in certain predefined states. The number may be different for different states. For example, the UE can only be authorized to transmit "n" transition indication messages (with or without the cause code as described above) when in RRC CELL_PCH or URA_PCH state.
In some modalities, methods and devices that are compatible with 3GPP TS 25.331 Universal Mobile Telecommunications System (UMTS); Radio Resource Control (RRC); Protocol Specification, Version 8, or an evolution thereof, with changes to facilitate or implement one or more of the modalities described herein are provided. Examples of this are provided in Appendix A, Appendix B, and Appendix C. All of these examples refer to the use of SCRI, but more generally the use of any transition indication is contemplated.
In some embodiments (see Appendix A for an example implementation), a variable UE internal state is defined, which is set the first time the UE fires FD from the PCH state. If the UE set is then prevented from triggering FD again from PCH state, the variable is reset when new PS data arrives for transmission.
In some embodiments (see annex B for an implementation example), a V316 counter is defined and initially set to zero. The UE in PCH state is allowed to trigger the sending of a transition indication (such as a SCRI) with cause if V316 < N316 (N316 is the maximum value). If UE triggers sending a transition indication (such as a SCRI with cause value) in PCH state then V316 is incremented. V316 is reset to zero if the UE is paged in PCH state or if the UE has uplink PS data available for the transition. If N316 is set to be 1, then the behavior is equivalent to V316 being a variable state boolean. Note that the UE with PS data available for transmission specifically excludes sending a transition indication (such as SCRI with cause) and causes counter V316 to be reset. In this context, the PS having data available may, for example, mean that the user has data to transmit on RB3 (radio carrier 3) or above (SCRI message is sent on RB2).
Note the proposed text in 8.3.1 0.2 (cell update procedure) and the last paragraph of 8.1.14.2 are alternative ways to capture the condition to reset V316.
In some embodiments (see Annex C for an example implementation), the UE is inhibited from transmitting a transition indication (such as a SCRI with cause) if the network moves the UE to PCH state in response to a transition indication ( e.g. SCRI with cause) transmitted by the UE while in DCH or FACH state. Inhibiting the transition indication (such as SCRI with cause) can be done by setting V316 to N316. The UE will assess whether the movement is instructed by the network "in response" to the transition indication. The mechanisms described above can be used for this, for example the UE may deem this to be the case if the reconfiguration is received within a certain time of sending the transition indication.
In some embodiments, a new flag can be added to the reset message which can be set to TRUE if the reset message is triggered in the network by receiving a SCRI with the cause, thus allowing the UE to know for sure if the reset is in response to the SCRI with the cause. An example of this is described in Appendix D.
Many different modalities for inhibiting the transmission of a transition indication, either completely, or for another maximum number of transition indications, have been described. Many of these are a function of one or more of: whether the current state of the UE is the result of a previous state transition; whether the current state is the same as the state of the UE before sending a state transition, whether the current state is more battery intensive than the state of the UE before sending a state transition.
In some embodiments, a mechanism to inhibit transmission of a transition indication is implemented, or not, on a state basis; in some modalities, for certain states no mechanism is implemented. In other embodiments, a different mechanism is used for each of the at least two states.
In one embodiment, the network has a plurality of choices of how to proceed when it has received an indication at step 1810 and optionally examine the radio resource profile or profiles at step 1820.
The first option is to do nothing. The network may decide that the transition is not justified and therefore may not accept the User Equipment appointment to transition. As will be appreciated by those skilled in the art, doing nothing saves network signaling as the state is not changed and in particular since a transition is not triggered.
The second option is to change the device status. For example, in a UMTS network, the device state might change from Cell_DCH to Cell_PCH. In non-UMTS networks, state transition can occur between connected states. As will be appreciated by those skilled in the art, changing states reduces the amount of core network signaling as compared to a transition to idle mode. Changing the state can also save radio resources since the Cell_PCH state does not require a dedicated channel. Also Cell_PCH is less battery intensive state allowing UE to preserve battery power.
The third option for the network is to keep the UE in the same state, but release the radio resources associated with a particular APN or PDP context. This approach saves radio and signaling resources as the connection is kept in its current state and does not need to be re-established. However, it may be less suitable for situations where EU battery life is a concern.
A fourth option for the network is to transition the UE to an idle mode. In particular, both in UMTS and non-UMTS, the network can move from a connected mode to an idle mode. As will be appreciated, this saves radio resources as no connection is generally maintained. In addition, it saves battery life on user equipment. However, a greater amount of core network signaling is required to re-establish the connection.
A fifth option for the network is to change a data rate allocation, which will save radio resources, usually allowing more users to use the network. OTHER OPTIONS WOULD BE EVIDENCE TO EXPERTS IN THE ART.
The network's decision which of the five or more options to use will vary from network to network. Some overloaded networks may prefer to preserve radio resources and therefore would choose the third, fourth, or fifth option above. Other networks prefer to minimize signaling and therefore may choose the first or second option above.
The decision is shown in Figure 18 at step 1830 and may be based on network preferences along with the radio resource profile for the user equipment. The decision is triggered by the network receiving an indication from the User Equipment that the User Equipment would like to transition to another state, eg in a less battery intensive state.
Reference is now made to Figure 19. Figure 19 illustrates the simplified network element adapted to make the decisions shown in Figure 18, above. Network element 1910 includes a communications subsystem 1920 adapted to communicate with user equipment. As will be appreciated by those skilled in the art, communications subsystem 1920 need not communicate directly with user equipment, but may be part of a communications path for communications to and from user equipment.
Network element 1910 further includes a processor 1930 and storage 1940. Storage 1940 is adapted to store pre-configured or static radio resource profiles for each User Equipment being served by network element 1910. Processor 1930 is adapted to, upon receipt of an indication by communications subsystem 1920, consider the radio resource profile for the User Equipment and decide on a network action regarding the transition of the User Equipment. As will be appreciated by those skilled in the art, the indication received by the communications subsystem 1920 may further include a portion or all of the radio resource profile for the user equipment which may then be used by the processor 1930 to make the decision to network with respect to any transition.
Based on the above, a network element therefore receives an indication from the user equipment that a transition may be in order (such as, for example, when a data exchange is complete and/or that no additional data is expected in the EU). Based on this indication, the network element optionally checks the user equipment's radio resource profile, which can include both static and dynamic profile elements. The network element can also check safeguards to ensure that unnecessary transitions are not taking place. The network element can then decide to do nothing or transition to a different mode or state, or take down a radio resource. As will be appreciated, this gives the network more control of its radio resources and allows the network to configure transition decisions based on network preferences rather than merely user equipment preferences. Also, in some cases, the network has more information than the device about transiting. For example, User Equipment is aware of upstream communications and based on this may decide that the connection may be dropped. However, the network may have received communications downstream to the User Equipment and thus realized that it cannot drop the connection. In this case, a delay can also be introduced using the delay timer to provide the network with greater certainty that no data will be received by user equipment in the near future.
The embodiments described herein are examples of structures, systems, or methods that have elements that correspond to elements of the techniques of the present disclosure. This written description may enable those skilled in the art to make and use alternative embodiments having elements likewise correspond to elements of the techniques of the present disclosure. The intended scope of the techniques of this disclosure, therefore, includes other structures, systems, or methods that do not differ from the techniques of this disclosure as described herein, and further includes other structures, systems, or methods with insubstantial differences from the techniques of this disclosure, as described herein. .
Figure 8.1.14-1: Signaling connection release indication procedure, normal case 8.1.14.1 General
The signaling connection release indication procedure is used by the UE to indicate to the UTRAN that one of its signaling connections has been released. The procedure can in turn start the RRC connection release process. 8.1.14.2 Initiation
The UE shall, upon receiving a request to release (abort), the upper layer signaling connection for a specific CN domain: 1> if a signaling connection in a variable ESTABLISHED SIGNALING CONNECTION for the specific CN domain identified with IE "CN domain identity" exists: 2> start signaling connection release indication procedure. 1> otherwise: 2> aborts any ongoing signaling connection establishment for that specific CN domain as specified in 8.1.3.5a.
After start of signaling connection release indication procedure in CELL_PCH or URA_PCH state, UE shall: 1> if variable COMMON EDCH READY is set to TRUE: 2> move to CELL_FACH state; 2> reset timer T305 using its initial value if periodic cell update being configured by T305 in IE “Timers and UE constants in connected mode” set to any value other than “infinite”. 1> else: 2> if variable H_RNTI and variable C_RNTI are defined: 3> continue with signaling connection release indication procedure as below. 2> else: 3> perform a cell update procedure, according to subitem 8.3.1, using the cause "uplink data transmission"; 3> when cell update procedure is completed successfully: 4> continue with signaling connection release indication procedure as below.
The UE must: 1> set the IE “DN Domain Identity” to the value indicated by the upper layers. The value of IE indicates the domain of CN whose associated signaling connection from the upper layers is indicating to be released; 1> remove the signaling connection with the identity indicated by the upper layers from the SIGNALING ESTABLISHED CONNECTION variable; 1> transmit a SIGNALING CONNECTION RELEASE INDICATION message on DCCH using AM RLC.
When the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message has been confirmed by RLC the procedure ends.
In addition, if timer value T323 is stored in IE "Timers and UE constants in connected mode" in the variable TIMERS AND CONSTANTS, and if there is no CS domain connection indicated in the variable ESTABLISHED SIGNALING CONNECTION, the UE can: 1> if upper layers indicate that there is no more PS data for an extended period: 2> if timer T323 is not running: 3> if UE is in CELL_DCH state or CELL_FACH state, or 3> if UE is in CELL_PCH state or URA_PCH state and a “triggered” in the variable PCH STATUS IN ADDED SCRI is FALSE: 4> if the UE is in CELL_PCH or URA_PCH state, define “activated” in the variable PCH STATUS IN ADDED SCRI is TRUE; 4> define IE "CN Domain Identity" for PS domain; 4> set the IE "Cause of Signaling Connection Release Indication" to "EU Requested PS Data end of session"; 4> transmit a SIGNALING CONNECTION RELEASE INDICATION message on DCCH using AM RLC; 4> start timer T323.
When the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is confirmed by RLC the procedure ends.
The UE shall be prevented from sending the SIGNALING CONNECTION RELEASE INDICATION message with the IE "Signaling Connection Release Indication Cause" set to "UE Requested PS Data end of session", while timer T323 is on execution.
After sending the SIGNALING CONNECTION RELEASE INDICATION message with IE "Cause of Signaling Connection Release Indication" set to "EU Requested PS Data end of session", if PS data becomes available to the transmission then the UE must create a “triggered” in the variable PCH STATUS IN ADDED SCRI if it is FALSE. 8.1.14.2a RLC Reset or Inter-RAT Change
If a reset of the transmit side of the RLC entity in RB2 radio bearer signaling occurs before the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION Message is acknowledged by RLC, the UE shall: 1> retransmit the RELEASE INDICATION message CONNECTION SIGNALING on uplink DCCH using AM RLC in RB2 radio bearer signaling.
If an Inter-RAT transfer from UTRAN procedure occurs before successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is acknowledged by the RLC, the UE shall: 1> abort the signaling connection while in the new RAT. 8.1.14.3 Reception of SIGNALING CONNECTION RELEASE INDICATION by UTRAN
Upon receipt of a SIGNALING CONNECTION RELEASE INDICATION message, if the IE "Cause of the Signaling Connection Release Indication" is not included, the UTRAN requests the release of the signaling connection from the upper layers. Upper layers can then initiate the release of the signaling connection.
If the IE "Cause of the Signaling Connection Release Indication" is included in the SIGNALING CONNECTION RELEASE INDICATION message, the UTRAN can initiate a state transition to IDLE, CELL_PCH, URA_PCH or CELL_FACH state of efficient battery consumption. 8.1.14.4 Timer T323 expires
When timer T323 expires: 1> the UE can determine whether any subsequent indications from the upper layers that there is no more PS data for an extended period, in which case it triggers the transmission of a SIGNALING CONNECTION RELEASE INDICATION message accordingly with clause 8.1.14.2;



8.3.1.1 General
Cell update and URA update procedures serve several main purposes: - notify UTRAN after re-entering service area in URA_PCH or CELL_PCH state; - notify UTRAN of an RLC unrecoverable error [16] in an AM RLC entity; - be used as a supervisory mechanism in the CELL_FACH, CELL_PCH, or URA_PCH state through periodic update.
In addition, the URA update procedure also serves the following purpose: - retrieve a new URA identity after cell reselection for a cell that does not belong to the current URA assigned to the UE in URA_PCH state.
In addition, the cell update procedure also serves the following purposes: - updating UTRAN with the current cell that the UE is camping after cell reselection; - act on a radio link failure in CELL_DCH state; - act on failure to transmit the EU CAPACITY INFORMATION message; - for FDD and 1.28 Mcps TDD, if variable H_RNTI is not defined, and for 3.84 Mcps TDD and 7.68 Mcps TDD: when triggered in URA_PCH or CELL_PCH state, notify UTRAN of a transition to CELL_FACH state due to receiving UTRAN originated from paging or due to a request to transmit uplink data; - count the number of UEs in URA_PCH, CELL_PCH and CELL_FACH that are interested in receiving an MBMS transmission; - when activated in URA_PCH, CELL_PCH and CELL_FACH status, notify UTRAN of the interest of UEs to receive an MBMS service; - request the MBMS P-T-P RB configuration by the UE in CELL_PCH, URA_PCH and CELL_FACH status.
Cell update and IVR update procedures can: 1> include an update of information related to mobility in the UE; 1> cause a state to transition from CELL_FACH state to CELL_DCH, CELL_PCH or URA_PCH state or in idle mode.
The cell update procedure may also include: - a re-establishment of AM RLC entities; - a radio bearer release, radio bearer reset, transport channel reset or physical channel reset. 8.3.1.2 Initiation
The UE shall initiate the cell update procedure in the following cases: 1> transmit uplink data: 2> for FDD and 1.28 Mcps TDD, if variable H_RNTI is not defined, and for 3.84 Mcps TDD and 7, 68 Mcps TDD: 3> if the UE is in URA_PCH or CELL_PCH state; and 3> if timer T320 is not running: 4> if UE has uplink RLC data PDU or uplink RLC control PDU in RB1 or above to transmit: 5> perform cell update using cause "uplink data transmission". 3> else: 4> if variable ESTABLISHMENT CAUSE is defined: 5> perform cell update using cause "uplink data transmission". 1> paging response: 2> if the criteria for performing cell update using the cause specified above in the current sub-item is not met, and 2> if the UE in URA_PCH or CELL_PCH state, receives a PAGING TYPE 1 message filling in the conditions for starting a cell update procedure specified in subitem 8.1.2.3: 3> perform cell update using "paging response" cause. 1> radio link failure: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met: 3> if the UE is in CELL_DCH state and the radio link failure criteria are met, as specified in subsection 8.5.6, or 3> if the transmission of the UE CAPACITY INFORMATION message fails as specified in subsection 8.1.6.6: 4> perform cell update using "radio link failure" cause. 1> RB ptp MBMS request: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in URA_PCH, Cell_PCH or Cell_FACH state and 2> if timer T320 is not working, and 2> if UE has performed cell update for radio carrier ptp MBMS request as specified in subitem 8.6.9.6: 3> perform cell update using cause "RB request ptp MBMS". 1> Re-enter the service area: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item are met, and 2> if the UE is in CELL_FACH or CELL_PCH state; and 2> if UE has been out of service area and re-enters service area before T307 or T317 expires: 3> perform cell update using "re-enter service area" cause. 1> RLC unrecoverable error: 2> if none of the criteria for performing cell update with the causes specified above in the current subitem is met, and 2> if the UE detects RLC unrecoverable error [16], in an AM entity RLC: 3> perform cell update using cause "RLC unrecoverable error". 1> Mobile reselection: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met: 3> if the UE is in CELL_FACH or CELL_PCH state and the UE performs cell reselection, or 3 > if UE is in CELL_FACH state and variable C_RNTI is empty: 4> perform cell update using cause "cell reselect". 1> Periodic cell update: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in CELL_FACH or CELL_PCH state; and 2> if timer T305 expires, and 2> if the criteria for “in service area” as specified in subitem 8.5.5.2 are met, and 2> if periodic update is configured by T305 in IE “Timers and constants of UE in Connected Mode” set to any value other than “infinite”: 3> for FDD: 4> if COMMON TRANSMISSION AND DCH variable DCH is set to FALSE: 5> perform cell update using cause “Periodic cell update”. 4> if not: 5> reset timer T305; 5> and finish the procedure. 3> for 1.28 Mcps TDD and 3.84/7.68 Mcps TDD: 4> perform cell update using cause "Periodic cell update". 1> MBMS reception: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in the URA_PCH, Cell_PCH or Cell_FACH state and 2> if the UE must perform cell update for MBMS count as specified in subitem 8.7.4: 3> perform cell update using cause "MBMS receive".
A UE in the URA_PCH state will start the URA update procedure in the following cases: 1> URA reselection: 2> if the UE detects that the current URA assigned to the UE, stored in the variable URA IDENTITY, is not present in the list of IVR identities in type 2 system information block; or 2> if the IVR identities list in the type 2 system information block is empty, or 2> if the type 2 system information block cannot be found: 3> perform IVR update using the cause " change of URA". 1> periodic IVR update: 2> if the criteria for performing IVR update with the cause as specified above in the current subitem are not met: 3> if timer T305 expires and if periodic update is set by T305 in IE “Timers and UE constants in connected mode” set to any value other than “infinite”, or 3> if the conditions to start an IVR update procedure specified in subitem 8.1.1.6.5 are fulfilled: 4> perform update of URA using the cause "Periodic URA update".
When initiating the URA update or cell update procedure, the UE must: 1> whether the UE has uplink RLC data PDU or uplink RLC control PDU in RB3 or above to transmit, or 1> if the UE receives a PAGE TYPE 1 message fulfilling the conditions to initiate a cell update procedure specified in subitem 8.1.2.3: 2> set counter V316 to zero. 1> if timer T320 is running: 2> for timer T320; 2> if UE has uplink RLC data PDU or uplink RLC control PDU in RB1 or above to transmit: 3> perform cell update using cause "uplink data transmission". 2> if not: 3> if cell update procedure is not triggered due to paging response or radio link failure, and 3> if UE should perform cell update for ptp MBMS radio bearer request, as specified in subitem 8.6.9.6: 4> perform cell update using cause "request RB ptp MBMS". 1> for T319 timer if it is running; 1> for timer T305; 1> for FDD and 1.28 Mcps TDD: 2> if the UE is in CELL_FACH state; and 2> if the IE "common HS-DSCH system information" is included in the type 5 System Information Block or the type 5BIS System Information Block and 2> for 1.28 Mcps TDD, if the IE " common E-DCH system information" in System Information Block type 5; 2> if the UE supports HS-DSCH reception in CELL_FACH state: 3> if variable H_RNTI is not defined or variable C_RNTI is not defined: 4> clear variable H_RNTI; 4> clear C_RNTI variable; 4> clear any stored “HARQ information” 140/208 IEs; 4> set variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 4> and begin to receive the physical channel(s) mapped from HS-DSCH transport channels of HS-SCCH and HS-PDSCH type, using the parameters given by the IE(s) "common HS-DSCH system information" of according to the procedure in subitem 8.5.37. 3> if not: 4> receive the physical channel(s) mapped from HS-DSCH transport channels of HS-SCCH and HS-PDSCH type, using the parameters given by IE(s) "common HS-DSCH system information" according to the procedure described in sub-item 8.5.36; 4> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 4> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 4> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 4> if READY FOR COMMON EDCH variable is set to TRUE: 5> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45 for FDD and 8.5.45a for 1.28 Mcps TDD. 1> if the UE is in CELL_DCH state: 2> in the variable RB TIMER INDICATOR, set the IE "T314 expired" and the IE "T315 expired" as FALSE; 2> if the stored values of timer T314 and timer T315 are both equal to zero; or 2> if the value stored in timer T314 is equal to zero and there are no radio carriers associated with any radio access carriers so that in the variable STABILIZED RABS the value of the IE "Timer Reset" is set to "useT315" and signaling connection exists only for CS domain: 3> free all its radio resources; 3> indicate release (abort) of the established signaling connections (as stored in variable ESTABLISHED SIGNALING CONNECTION) and established radio access bearers (as stored in variable STABILIZED RABS) to upper layers; 3> clear variable ESTABLISHED SIGNALING CONNECTION; 3> clear variable STABILIZED RABS; 3> enter idle mode; 3> perform other actions when entering idle mode from connected mode as specified in 8.5.2; 3> and the procedure ends. 2> if the value stored in timer T314 is equal to zero: 3> release all radio carriers associated with any radio access carriers so that in variable STABILITY RABS the value of the IE "Timer Reset" is set to " useT314"; 3> in the variable RB TIMER INDICATOR set the IE "T314 expired" to TRUE; 3> if all radio access bearers associated with a CN domain are released: 4> release the signaling connection for that CN domain; 4> remove signaling connection for that CN domain from SIGNALING CONNECTION ESTABLISHED variable; 4> indicate release (abort) of the signaling connection to the upper layers; 2> if the value stored in timer T315 is equal to zero: 3> release all radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of the IE "Timer Reset" is set to "useT315 "; 3>In the RB TIMER INDICATOR variable set the IE "T315 expired" as TRUE. 3> if all radio access bearers associated with a CN domain are released: 4> release the signaling connection for that CN domain; 4> remove signaling connection for that CN domain from SIGNALING CONNECTION ESTABLISHED variable; 4> indicate release (abort) of the signaling connection to the upper layers; 2> if the value stored in timer T314 is greater than zero: 3> if there are radio bearers associated with any radio access bearers for which in
RABS STABILIZED variable the value of IE "Reset timer" is set to "useT314": 4> start timer T314. 3> if there are no radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of the IE "Timer Reset" is set to "useT314" or "useT315" and the signaling connection exists for the domain of CS: 4> start timer T314. 2> if the stored value of timer T315 is greater than zero: 3> if there are radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of the IE "Timer Reset" is set to "useT315 ", or 3> if signaling connection exists for PS domain: 4> start timer T315. 2> for the released radio carrier(s): 3> clear the information about the radio carrier from variable STABILIZED RABS; 3> when all radio bearers belonging to the same radio access bearer are released: 4> indicate local end release of the radio access bearer to higher layers using the domain identity of CN together with the stored RAB identity in variable STABILIZED RABS; 4> Clear all information about radio access carrier from RABS variable. 2> if DCH AND variable TRANSMISSION is set to TRUE: 3> sets DCH AND variable TRANSMISSION to FALSE; 3> for any E-AGCH and E-HICH receiving procedures; 3> for FDD, for all E-RGCH receiving procedures. 3> for FDD, for any E-DPCCH and E-DPDCH transmission procedures. 3> for 1.28 Mcps TDD, for any E-PUCH transmission procedure. 3> clear the E_RNTI variable; 3> act as if the IE “MAC-es/e reset indicator” was received and set to TRUE; 3> release all E-DCH HARQ features; 3> no longer consider any radio link to be the served E-DCH radio link. 2> move to CELL_FACH state; 2> select a suitable UTRA cell on the current frequency according to [4]; 2> clear variable E_RNTI and: 3> determine the value for variable RNTI HSPA STORED PCH CELL and take the corresponding measures as described in subitem 8.5.56; 3> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 3> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures as described 2> for 3.84 in sub-item Mcps TDD and 8.5.46. 7.68 Mcps TDD; or 2> for FDD and 1.28 Mcps TDD, if the UE does not support HS-DSCH reception in CELL_FACH status, 2> if the IE "common HS-DSCH theme or system information" is not included in the Information Block in
Type 5 System or Type 5BIS System Information Block; or 2> for 1.28 Mcps TDD, if IE "common E-DCH system information" is not included in System Information Block type 5: 3> select PRACH according to subitem 8.5.17; 3> select Secondary CCPCH according to subitem 8.5.19; 3> use the data transport format set in system information as specified in subitem 8.6.5.1; 3> take the actions related to the GENERAL variable DSCH HS RECEPTION as described in subitem 8.5.37a. 2> otherwise: 3> if READY FOR COMMON EDCH variable is set to TRUE: 4> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45. 3> if not: 4> select PRACH according to subitem 8.5.17 and: 5> use for the PRACH the set of transport format given in system information, as specified in subitem 8.6.5.1. 3> clear H_RNTI variable; 3> clear any stored “HARQ information” IEs; 3> redefine the MAC-ehs entity [15]; 3> set variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 3> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 2> set ORDERED RECONFIGURATION variable to FALSE. 1> set PROTOCOL ERROR INDICATOR, FAULT INDICATOR, UNSUPPORTED CONFIGURATION and INVALID CONFIGURATION as FALSE; 1> set BEGIN CELL UPDATE variable to TRUE; 1> if any IEs related to HS-DSCH are stored in the UE: 2> clear any IE “downlink HS-PDSCH information” stored; 2> clear any stored IE “FDD Downlink Secondary Cell Information”; 2> clear all variable TARGET CELL PRESET inputs; 2> for 1.28Mcps TDD, clear IE "CONNECTION “Midamble” HS-PDSCH" and IE "CONNECTION DEFINED HS-SCCH" in IE ”Multiple DL Carrier Information”; 2> determine the value for variable DSCH HS RECEPTION and take the corresponding measures, as described in subitem 8.5.25; 2> determines the value for variable SECONDARY_CELL_RECEPÇÃO DSCH HS and takes the corresponding measures, as described in subitem 8.5.51. 1> if any E-DCH related IEs are stored in the UE: 2> clear any stored “E-DCH information” IE; 2> determine the value for DCH TRANSMISSION AND variable and take the corresponding measures, as described in subitem 8.5.28. 1> if any IEs "DTX-DRX timing information" or "DTX-DRX information" are stored in the UE: 2> determine the value for variable DTX DRX STATUS and take the corresponding measurements as described in subitem 8.5 .34. 1> if the IE "less HS-SCCH information" is stored in the UE: 2> determine the value for the LOW SCCH STATE OF variable HS and take the corresponding measures as described in subitem 8.5.35. 1> if any MIMO related IEs are stored in the UE: 2> determine the value for variable MIMO STATE and take the corresponding measures as described in subitem 8.5.33. 1> for 1.28 Mcps TDD, if the IEs "Control Channel DRX Information" are stored in the UE: 2> determine the value for variable CONTROL CHANNEL DRX STATUS and take the corresponding measures as described in subitem 8.5.53. 1> for 1.28 Mcps TDD, if the IE "SPS information" is stored in the UE: 2> determine the value for variable E DCH SPS STATE and take the corresponding measures as described in subitem 8.5.54; 2> determine the value for variable HS DSCH SPS STATUS and take the corresponding measures, as described in subitem 8.5.55. 1> if the UE is not already in CELL_FACH state: 2> move to CELL_FACH state; 2> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 2> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 2> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 2> for 3.84 Mcps TDD and 7.68 Mcps TDD, or 2> for FDD and 1.28 Mcps TDD, if the UE does not support HS-DSCH reception in CELL_FACH state, or 2> if the IE "information HS-DSCH System Information Block" is not included in the type 5 System Information Block or the type 5BIS System Information Block; or 2> for 1.28 Mcps TDD, if IE "common E-DCH system information" is not included in System Information Block type 5: 3> select PRACH according to subitem 8.5.17; 3> select Secondary CCPCH according to subitem 8.5.19; 3> use the transport format set given in system information as specified in sub-item 8.6.5.1; 3> take the actions related to the GENERAL variable DSCH HS RECEPTION as described in subitem 8.5.37a. 2> otherwise: 3> if READY FOR COMMON EDCH variable is set to TRUE: 4> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45. 3> if not: 4> select PRACH according to subitem 8.5.17 and: 5> use for the PRACH the data transport format set in system information, as specified in subitem 8.6.5.1. 3> if variable H_RNTI is not defined or variable C_RNTI is not defined: 4> clear C_RNTI variable; 4> clear H_RNTI variable; 4> clear any stored “HARQ information” IEs; 4> set variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 4> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 3> if not: 4> receive the HS-DSCH according to the procedure described in subitem 8.5.36. 1> if UE perform cell reselection: 2> clear the variable C_RNTI, and 2> stop using this C_RNTI that has just been cleared of variable C_RNTI in MAC; 2> for FDD and 1.28 Mcps TDD, if variable H_RNTI is set: 3> clear the variable H_RNTI, and 3> stop using this H_RNTI that has just been cleared from variable H_RNTI on MAC; 3> clear any stored “HARQ information” IEs; 2> for FDD and 1.28 Mcps TDD, if variable E_RNTI is set: 3> clear variable E_RNTI. 2> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 2> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 2> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 2> for FDD and 1.28 Mcps TDD, if UE supports HS-DSCH reception in CELL_FACH status and IE "common HS-DSCH system information" is included in type 5 System Information Block or Information Block of 5BIS type system: 3> redefine MAC-ehs entity [15]. 3> set variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 3> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 2> if not: 3> take the actions related to the GENERAL RECEPTION OF DSCH HS variable as described in subitem 8.5.37a. 1> define CFN in relation to the SFN of the current cell according to subitem 8.5.15; 1> in case of a cell update procedure: 2> define the content of the CELL UPDATE message according to subitem 8.3.1.3; 2> send the CELL UPDATE message for transmission on the uplink CCCH. 1> in case of an IVR update procedure: 2> define the IVR UPDATE message content according to subitem 8.3.1.3; 2> send the URA UPDATE message for transmission on the uplink CCCH. 1> set counter V302 to 1; 1> start timer T302 when MAC layer indicates message transmission success or failure. 1.1 3.3.43 Timers and UE Constants in Connected Mode
This information element specifies constant and timer values used by the UE in connected mode. per UE" in CELL_PCH or URA_PCH. 13.4.27x SCRI DRIVEN IN SHP STATUS
This variable contains information about whether a SIGNALING CONNECTION RELEASE INDICATION message was triggered in CELL PCH or URA PCH states. There is such a variable in the UE.
Information Element/ Group Name Requirement Multi Type and Reference Semantic Descriptions Triggered OP Boolean Set to FALSE when entering connected mode UTRA RRC 1.2 Counters for UE Counter Reset Incremented When reaching maximum value V300 When starting RRC connection establishment procedure When expire T300. When V300>N300, UE enters idle mode. V302 When starting IVR update procedure or cell update On expiring T302. When V302>N302, the UE enters idle mode. V304 When sending the first UE CAPACITY INFORMATION message Upon expiring T304. When V304>N304, UE starts cell update procedure. APPENDIX C 8.1.14 Signaling connection release indication procedure Figure 8.1.14-1: Signaling connection release indication procedure, normal case 8.1.14.1 General
The signaling connection release indication procedure is used by the UE to indicate to the UTRAN that one of its signaling connections has been released. The procedure can in turn initiate the RRC connection release process. 8.1.14.2 Initiation
The UE shall, upon receiving a request to release (abort), the upper layer signaling connection for a specific CN domain: 1> if a signaling connection in variable SIGNALING CONNECTION ESTABLISHED for the specific CN domain identified with the IE "CN domain identity" exists: 2> start signaling connection release indication procedure. 1> otherwise: 2> abort any ongoing signaling connection establishment for that specific CN domain as specified in 8.1.3.5a.
After start of signaling connection release indication procedure in CELL_PCH or URA_PCH state, UE shall: 1> if variable COMMON EDCH READY is set to TRUE: 2> move to CELL_FACH state; 2> reset timer T305 using its initial value if periodic cell update was configured by T305 in IE “Timers and UE constants in connected mode” set to any value other than “infinite”. 1> else: 2> if variable H_RNTI and variable C_RNTI are defined: 3> continue with signaling connection release indication procedure as below. 2> else: 3> perform a cell update procedure, according to subitem 8.3.1, using the cause "uplink data transmission"; 3> when cell update procedure successfully completes: 4> continue with signaling connection release indication procedure as below. The UE must: 1> set the IE “DN Domain Identity” to the value indicated by the upper layers. The value of IE indicates the domain of CN whose associated signaling connection from the upper layers is indicating to be released; 1> remove signaling connection with identity indicated by upper layers of SIGNALING CONNECTION ESTABLISHED variable; 1> transmit a SIGNALING CONNECTION RELEASE INDICATION message on DCCH using AM RLC.
When the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is confirmed by RLC the procedure ends.
Furthermore, if timer value T323 is stored in IE “Timers and UE constants in connected mode”, in variable TIMERS_AND_CONSTANTS, and if there is no CS domain connection indicated in the variable ESTABLISHED SIGNALING CONNECTION, the UE can: 1 > if the upper layers indicate that there is no more PS data, for an extended period: 2> if the T323 timer is not running: 3> if the UE is in CELL_DCH state or CELL_FACH state, or 3> if the UE is in CELL_PCH state or URA_PCH state and V316< N316: 4> if the UE is in CELL_PCH or URA_PCH state, increment V316 by 1; 4> set IE "CN Domain Identity" to PS domain; 4> set the IE of "Cause of Signaling Connection Release Indication" to "EU Requested PS Data end of session"; 4> transmitting a SIGNALING CONNECTION RELEASE INDICATION message on DCCH using AM RLC; 4> start timer T323.
When the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is confirmed by RLC the procedure ends.
The UE shall be prevented from sending the SIGNALING CONNECTION RELEASE INDICATION message with the IE of "Signaling Connection Release Indication Cause" set to "UE Requested PS Data end of session" as timer T323 is running.
If PS data becomes available for transmission or UE receives a paging message that triggers cell update procedure, then UE must set V316 to zero. If the UE sends the SIGNALING CONNECTION RELEASE INDICATION message with the IE of "Signaling Connection Release Indication Cause" set to "UE Requested PS Data end of session" in CELL_DCH or CELL_FACH state and in In response the UE receives a reconfiguration message that transitions the UE to CELL_PCH state or URA_PCH state then the UE shall set V316 to N316. The UE shall consider the reset message to be in response to the SIGNALING CONNECTION RELEASE INDICATION message if it is received within 500ms. 8.1.14.2a RLC Reset or Inter-RAT Change
If a reset of the transmit side of the RLC entity in RB2 radio bearer signaling occurs before the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is acknowledged by RLC, the UE shall: 1> retransmit the INDICATION message SIGNALING CONNECTION RELEASE on uplink DCCH using AM RLC in RB2 radio bearer signaling.
If an Inter-RAT transfer from UTRAN procedure occurs before the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is acknowledged by the RLC, the UE shall: 1> abort the signaling connection while in the new RAT. 8.1.14.3 Reception of SIGNALING CONNECTION RELEASE INDICATION by UTRAN
Upon receipt of a SIGNALING CONNECTION RELEASE INDICATION message, if the IE "Cause of the Signaling Connection Release Indication" is not included, the UTRAN requests the release of the upper layers signaling connection. Upper layers can then initiate the release of the signaling connection.
If the IE of "Signaling Connection Release Indication Indication" is included in the SIGNALING CONNECTION RELEASE INDICATION message the UTRAN may initiate a state transition to Idle state, CELL_PCH, URA_PCH or Efficient battery consumption CELL FACH . 8.1.14.4 Timer T323 expires
When timer T323 expires: 1> the UE can determine whether any subsequent indications from the upper layers having no more PS data for an extended period, in which case it triggers the transmission of a SIGNALING CONNECTION RELEASE INDICATION message. in accordance with clause 8.1.14.2; 1> the procedure ends. 8.3 RRC connection mobility procedures 8.3.1 URA and cell update procedures uε UTRAN update cell update cell confirmation * Figure 8.3.1-1: Cell update procedure, basic flow UE UTRAN update cell coufii Update cell inaction < UTRAN mobility information confirmation Figure 8.3.1-2: Cell update procedure with UTRAN mobility information update UE UTRAN update cell complete update cell collocation physical channel reconfiguration Figure 8.3. 1-3: Cell update procedure with UTRAN physical channel reconfiguration update cell complete update cell configuration transport channel reconfiguration Figure 8.3.1-4: Cell update procedure with transport channel reconfiguration UE UTRAN update cell confirmation cell update complete radio carrier release ► Figure 8.3.1-5: cell update procedure with radio bearer release UE UTRAN cell update cell update confirmation complete cell radio bearer reset — > Figure 8.3.1-6: Cell update procedure with UTRAN radio bearer reset cell of update cell confirmation update complete radio bearer configuration Figure 8.3.1-6a: cell update procedure in case of failure Figure 8.3.1-8: IVR update procedure, basic flow UE UTRAN IVR dualization update confirmation of URA confirmation of UTRAN mobility information Figure 8.3.1-9: URA update procedure with UTRAN mobility information update Figure 8.3.1-10: URA update procedure, in case of failure 8.3.1.1 General
The cell update and URA update procedures serve several main purposes: - notify the UTRAN after re-entering the service area in the URA_PCH or CELL_PCH state; - notify the UTRAN of an RLC unrecoverable error [16] in an AM RLC entity; - to be used as a supervision mechanism in the CELL_FACH, CELL_PCH, or URA_PCH state via periodic update.
In addition, the URA update procedure also serves the following purpose: - retrieve a new URA identity after cell reselection for a cell that does not belong to the current URA assigned to the UE in URA_PCH state.
In addition, the cell update procedure also serves the following purposes: - updating the UTRAN with the current cell that the UE is camping after cell reselection; - act on a radio link failure in CELL_DCH state; - act on failure to transmit the EU CAPACITY INFORMATION message; - for FDD and 1.28 Mcps TDD, if variable H_RNTI is not defined, and for 3.84 Mcps TDD and 7.68 Mcps TDD: when triggered in URA_PCH or CELL_PCH state, to notify the UTRAN of a transition to CELL_FACH state due to UTRAN reception originating from paging or due to a request to transmit uplink data; - count the number of UEs in URA_PCH, CELL_PCH and CELL_FACH that are interested in receiving an MBMS transmission; - when activated in the URA_PCH, CELL_PCH and CELL_FACH status, notify the UTRAN of the interest of UEs to receive an MBMS service; - request the MBMS P-T-P RB configuration by the UE in CELL_PCH, URA_PCH and CELL_FACH status.
Cell update and URA update procedures can: 1> include an update of information related to mobility in the UE; 1> cause a state to transition from CELL_FACH state to CELL_DCH, CELL_PCH or URA_PCH state or in idle mode.
The cell update procedure may also include: - a re-establishment of AM RLC entities; - a radio bearer release, radio bearer reset, transport channel reset or physical channel reset. 8.3.1.2 Initiation
The UE shall initiate the cell update procedure in the following cases: 1> transmit uplink data: 2> for FDD and 1.28 Mcps TDD, if variable H_RNTI is not defined, and for 3.84 Mcps TDD and 7, 68 Mcps TDD: 3> if the UE is in URA_PCH or CELL_PCH state; and 3> if timer T320 is not running: 4> if UE has uplink RLC data PDU or uplink RLC control PDU in RB1 or above to transmit: 5> perform cell update using causes "uplink data transmission". 3> else: 4> if ESTABLISHMENT CAUSE variable is defined: 5> perform cell update using cause of "uplink data transmission". 1> paging response: 2> if the criteria for performing cell update using the above-specified cause in the current sub-item is not met, and 2> if the UE in URA_PCH or CELL_PCH state receives a PAGING TYPE 1 message filling in the conditions for starting a cell update procedure specified in subitem 8.1.2.3: 3> perform cell update using "paging response" cause. 1> radio link failure: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met: 3> if the UE is in CELL_DCH state and the radio link failure criteria are met, as specified in subsection 8.5.6, or 3> if the transmission of the UE CAPACITY INFORMATION message fails as specified in subsection 8.1.6.6: 4> perform cell update using cause "radio link failure ". 1> RB ptp MBMS request: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in URA_PCH, Cell_PCH or Cell_FACH state and 2> if timer T320 is not working, and 2> if UE has to perform cell update for radio bearer request ptp MBMS as specified in subitem 8.6.9.6: 3> perform cell update using cause "RB request ptp MBMS" . 1> Re-enter the service area: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in CELL_FACH or CELL_PCH state; and 2> if the UE has been out of service area and re-enters service area before T307 or T317 expires: 3> perform cell update using "re-enter service area" cause. 1> RLC unrecoverable error: 2> if none of the criteria for performing cell update with the causes specified above in the current subitem is met, and 2> if the UE detects RLC unrecoverable error [16], in an AM entity RLC: 3> perform cell update using cause "RLC unrecoverable error". 1> cell reselection: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met: 3> if the UE is in CELL_FACH or CELL_PCH state and the UE performs cell reselection, or 3> if UE is in CELL_FACH state and variable C_RNTI is empty: 4> perform cell update using cause "cell reselect". 1> periodic cell update: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in CELL_FACH or CELL_PCH state; and 2> if timer T305 expires, and 2> if the criteria for “in service area” as specified in subitem 8.5.5.2 are met, and 2> if periodic update is configured by T305 in IE “Timers and constants of UE in Connected Mode” set to any value other than "infinite": 3> for FDD: 4> if COMMON TRANSMISSION AND DCH variable DCH is set to FALSE: 5> perform cell update using cause "Periodic cell update" . 4> if not: 5> reset timer T305; 5> and finish the procedure. 3> for 1.28 Mcps TDD and 3.84/7.68Mcps TDD: 4> perform cell update using cause "Periodic cell update". 1> MBMS reception: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in the URA_PCH, Cell_PCH or Cell_FACH state and 2> if the UE has that perform cell update for MBMS count as specified in subitem 8.7.4: 3> perform cell update using cause "MBMS receive".
A UE in the URA_PCH state shall start the URA update procedure in the following cases: 1> URA reselection: 2> if the UE detects that the current URA assigned to the UE, stored in the variable URA IDENTITY, is not present in the list of IVR identities in type 2 system information block; or 2> if the list of IVR identities in the type 2 system information block is empty, or 2> if the type 2 system information block cannot be found: 3> perform IVR update using the cause " change of URA". 1> periodic IVR update: 2> if the criteria for performing IVR update with the cause as specified above in the current subitem are not met: 3> if timer T305 expires and if periodic update is configured by T305 in IE of “Timers and UE constants in connected mode” set to any value other than “infinite”, or 3> if the conditions to start an IVR update procedure specified in subitem 8.1.1.6.5 are fulfilled: 4> perform update of URA using the cause "Periodic URA update".
When initiating the URA update or cell update procedure, the UE must: 1> if the UE has uplink RLC data PDU or uplink RLC control PDU in RB3 or above to transmit, or 1 > if the UE receives a TYPE 1 PAGE message fulfilling the conditions to initiate a cell update procedure specified in subitem 8.1.2.3: 2> set counter V316 to zero. 1> if T320 timer is running: 2> for T320 timer; 2> if UE has uplink RLC data PDU or uplink RLC control PDU in RB1 or above to transmit: 3> perform cell update using cause "uplink data transmission". 2> if not: 3> if cell update procedure is not triggered due to paging response or radio link failure, and 3> if UE has to perform cell update for ptp MBMS radio bearer request, as per specified in subitem 8.6.9.6: 4> perform cell update using cause "request RB ptp MBMS". 1> for timer T319 if it is running; 1> for timer T305; 1> for FDD and 1.28 Mcps TDD: 2> if the UE is in CELL_FACH state; and 2> if the "common HS-DSCH system information" IE is included in the type 5 System Information Block or the type 5BIS System Information Block and 2> for 1.28 Mcps TDD, if the IE of "common E-DCH system information" in System Information Block type 5; 2> if the UE supports HS-DSCH reception in CELL FACH status: 3> if variable H_RNTI is not defined or variable C_RNTI is not defined: 4> clear variable H_RNTI; 4> clear C_RNTI variable; 4> clear any stored “HARQ information” IEs; 4> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 4> and begin to receive the physical channel(s) mapped from HS-DSCH transport channels of HS-SCCH and HS-PDSCH type, using the parameters given by the "common HS-DSCH system information" IE(s) according to the procedure in subitem 8.5.37. 3> if not: 4> receive the physical channel(s) mapped from HS-DSCH transport channels of type HS-SCCH and HS-PDSCH, using the parameters given by the IE(s) "common HS-DSCH system information" according to the procedure described in sub-item 8.5.36; 4> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 4> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 4> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 4> if READY FOR COMMON EDCH variable is set to TRUE: 5> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45 for FDD and 8.5.45a for 1.28 Mcps TDD. 1> if the UE is in CELL_DCH state: 2> in the variable RB TIMER INDICATOR, set the IE "T314 expired" and the IE "T315 expired" as FALSE; 2> if the stored values of timer T314 and timer T315 are both equal to zero; or 2> if the value stored in timer T314 is equal to zero and there are no radio carriers associated with any radio access carriers so that in the variable STABILIZED RABS the value of the "Timer Reset" IE is set to "useT315" and the signaling connection exists only for the CS domain: 3> release all its radio resources; 3> indicate release (abort) of established signaling connections (as stored in SIGNALING ESTABLISHED CONNECTION) and established radio access bearers (as stored in variable STABILIZED RABS) to upper layers; 3> clear variable ESTABLISHED SIGNALING CONNECTION; 3> clear variable STABILIZED RABS; 3> enter idle mode; 3> perform other actions when entering idle mode from connected mode as specified in 8.5.2; 3> and the procedure ends. 2> if the value stored in timer T314 is equal to zero: 3> release all radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of the "Timer Reset" IE is set to "useT314"; 3> in the variable RB TIMER INDICATOR set the IE "T314 expired" to TRUE; 3> if all radio access bearers associated with a CN domain are released: 4> release the signaling connection for that CN domain; 4> remove signaling connection for that CN domain from SIGNALING CONNECTION ESTABLISHED variable; 4> indicate release (abort) of the signaling connection to the upper layers; 2> if the stored value of timer T315 is equal to zero: 3> release all radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the "Timer Reset" IE value is set to " useT315"; 3>In the RB TIMER INDICATOR variable set the IE "T315 expired" as TRUE. 3> if all radio access bearers associated with a CN domain are released: 4> release the signaling connection for that CN domain; 4> remove signaling connection for that CN domain from SIGNALING CONNECTION ESTABLISHED variable; 4> indicate the release (abort) of the signaling connection to the upper layers; 2> if the stored value of timer T314 is greater than zero: 3> if there are radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of IE "Timer Reset" is set to "useT314 ": 4> start timer T314. 3> if there are no radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the "Timer Reset" IE value is set to "useT314" or "useT315" and the signaling connection exists for the CS domain: 4> start timer T314. 2> if the stored value of timer T315 is greater than 3> if zero: there are radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of IE "Timer Reset" is set to "useT315 ", or 3> if signaling connection exists for PS domain: 4> start timer T315. 2> for the released radio carrier(s): 3> clear the information about the radio carrier from variable STABILIZED RABS; 3> when all radio bearers belonging to the same radio access bearer are released: 4> indicate the local end release of the radio access bearer to higher layers using the domain identity of CN together with the identity of RAB stored in variable STABILIZED RABS; 4> Clear all information about radio access carrier from RABS variable. 2> if variable DCH AND TRANSMISSION is set to TRUE: 3> set DCH AND variable TRANSMISSION to FALSE; 3> for any E-AGCH and E-HICH receiving procedures; 3> for FDD, for all E-RGCH receiving procedures. 3> for FDD, for any E-DPCCH and E-DPDCH transmission procedures. 3> for 1.28 Mcps TDD, for any E-PUCH transmission procedure. 3> clear the E_RNTI variable; 3> act as if the “MAC-es/e reset indicator IE” was received and set to TRUE; 3> release all E-DCH HARQ features; 3> no longer consider any radio link to be the serving E-DCH radio link. 2> move to CELL_FACH state; 2> select a suitable UTRA cell on the current frequency according to [4]; 2> clear variable E_RNTI and: 3> determine the value for the variable RNTI HSPA STORED SHP CELL and take the corresponding measures as described in subitem 8.5.56; 3> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 3> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46. 2> for 3.84 Mcps TDD and 7.68 Mcps TDD; or 2> for FDD and 1.28 Mcps TDD, if the UE does not support HS-DSCH reception in CELL_FACH state, or 2> if the "common HS-DSCH system information" IE is not included in the Information Block Type 5 System or Type 5BIS System Information Block; or 2> for 1.28 Mcps TDD, if the IE of "common E-DCH system information" is not included in the Type 5 System Information Block: 3> select the PRACH according to subitem 8.5.17 ; 3> select the Secondary CCPCH according to sub-item 8.5.19; 3> use the transport format set given in system information as specified in sub-item 8.6.5.1; 3> take the actions related to the GENERAL variable DSCH HS RECEPTION as described in subitem 8.5.37a. 2> otherwise: 3> if READY FOR COMMON EDCH variable is set to TRUE: 4> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45. 3 3> if not: 4> select the PRACH according to subitem 8.5.17 and: 5> use for the PRACH the set of transport format given in system information, as specified in subitem 8.6.5.1. 3> clear H_RNTI variable; 3> clear any stored “HARQ information” IEs; 3> redefine the MAC-ehs entity [15]; 3> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 3> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 2> set variable ORDERED_RECONFIGURATION to FALSE. 1> set the ERROR INDICATOR PROTOCOL, FAIL INDICATOR, UNSUPPORTED CONFIGURATION and INVALID CONFIGURATION as FALSE; 1> set the BEGIN CELL UPDATE variable to TRUE; 1> if any IEs related to HS-DSCH are stored in the UE: 2> clear any IE of "downlink HS-PDSCH information" stored; 2> clear any stored “FDD Downlink Secondary Cell Information” IE; 2> clear all variable TARGET CELL PRESET inputs; 2> for 1.28Mcps TDD, clear the IE of "CONNECTION “Midamble” HS-PDSCH" and the IE of "CONNECTION HS-SCCH Definition" in IE ”Multi-carrier DL Information”; 2> determine the value for variable DSCH HS RECEPTION and take the corresponding measures, as described in subitem 8.5.25; 2> determine the value for variable SECONDARY CELL HS DSCH RECEPTION and take the corresponding measures, as described in subitem 8.5.51. 1> if any E-DCH related IEs are stored in the UE: 2> clear any stored “E-DCH information” IE; 2> determine the value for DCH TRANSMISSION AND variable and take the corresponding measures as described in subitem 8.5.28. 1> if any IEs of "DTX-DRX timing information" or "DTX-DRX information" are stored in the UE: 2> determine the value for variable DTX DRX STATUS and take the corresponding measures as described in subitem 8.5.34. 1> if the IE "less HS-SCCH information" is stored in the UE: 2> determine the value for the LOW SCCH STATE OF variable HS and take the corresponding measures as described in subitem 8.5.35. 1> if any MIMO related IEs are stored in the UE: 2> determine the value for variable MIMO STATE and take the corresponding measures as described in subitem 8.5.33. 1> for 1.28 Mcps TDD, if the IEs "Control Channel DRX Information" are stored in the UE: 2> determine the value for variable CONTROL CHANNEL DRX STATE and take the corresponding measures as described in subitem 8.5.53. 1> for 1.28 Mcps TDD, if the IE "SPS information" is stored in the UE: 2> determine the value for variable E DCH SPS STATE and take the corresponding measures as described in subitem 8.5.54; 2> determine the value for variable HS DSCH SPS STATUS and take the corresponding measures, as described in subitem 8.5.55. 1> if the UE is not already in CELL_FACH state: 2> move to CELL_FACH state; 2> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 2> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 2> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 2> for 3.84 Mcps TDD and 7.68 Mcps TDD, or 2> for FDD and 1.28 Mcps TDD, if the UE does not support HS-DSCH reception in CELL_FACH state, or 2> if the "information IE" HS-DSCH System Information Block" is not included in the type 5 System Information Block or the type 5BIS System Information Block; or 2> for 1.28 Mcps TDD, if the IE of "common E-DCH system information" is not included in the Type 5 System Information Block: 3> select the PRACH according to subitem 8.5.17 ; 3> select the Secondary CCPCH according to sub-item 8.5.19; 3> use the transport format set given in system information as specified in sub-item 8.6.5.1; 3> take the actions related to the GENERAL variable DSCH HS RECEPTION as described in subitem 8.5.37a. 2> otherwise: 3> if READY FOR COMMON EDCH variable is set to TRUE: 4> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45. 3> if not: 4> select the PRACH according to subitem 8.5.17 and: 5> use for the PRACH the set of transport format given in system information, as specified in subitem 8.6.5.1. 3> if variable H_RNTI is not defined or variable C_RNTI is not defined: 4> clear the variable C_RNTI; 4> clear the H_RNTI variable; 4> clear any stored “HARQ information” IEs; 4> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 4> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 3> if not: 4> receive the HS-DSCH according to the procedure described in subitem 8.5.36. 1> if UE perform cell reselection: 2> clear the variable C_RNTI, and 2> stop using this C_RNTI that has just been cleared of variable C_RNTI in MAC; 2> for FDD and 1.28 Mcps TDD, if variable H_RNTI is set: 3> clear the variable H_RNTI, and 3> stop using this H_RNTI that has just been cleared from variable H_RNTI on MAC; 3> clear any stored “HARQ information” IEs; 2> for FDD and 1.28 Mcps TDD, if variable E_RNTI is set: 3> clear the variable E_RNTI. 2> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 2> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 2> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 2> for FDD and 1.28 Mcps TDD, if the UE supports HS-DSCH reception in CELL_FACH state and the IE of "common HS-DSCH system information" is included in the type 5 System Information Block or Block Type 5BIS Information System: 3> redefine the MAC-ehs entity [15]. 3> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 3> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 2> if not: 3> take the actions related to the GENERAL RECEPTION OF DSCH HS variable as described in subitem 8.5.37a. 1> define CFN in relation to the SFN of the current cell according to subitem 8.5.15; 1> in case of a cell update procedure: 2> define the content of the CELL UPDATE message according to subitem 8.3.1.3; 2> send the CELL UPDATE message for transmission on the uplink CCCH. 1> in case of an IVR update procedure: 2> define the IVR UPDATE message content according to subitem 8.3.1.3; 2> send the URA UPDATE message for transmission on the uplink CCCH. 1> set counter V302 to 1; 1> start timer T302 when MAC layer indicates message transmission success or failure. 10.3.3.43 Timers and UE Constants in Connected Mode
This information element specifies constant and timer values used by the UE in connected mode.



13.4.27x SCRI TRIGGED IN PCH STATE This variable contains information about whether a SIGNALING CONNECTION RELEASE INDICATION message was triggered in CELL_PCH or URA_PCH states. There is such a variable 5 in the UE.
13.2 Counters for EU

13.3 EU Constants and Parameters

13.2 Counters for EU


13.3 EU Constants and Parameters
APPENDIX C
Figure 8.1.14-1: Signaling connection release indication procedure, normal case 8.1.14.1 General The signaling connection release indication procedure is used by the UE to indicate to the UTRAN that one of its signaling connections has been released. The procedure can in turn initiate the RRC connection release process. 8.1.14.2 Initiation
The UE shall, upon receiving a request to release (abort), the upper layer signaling connection for a specific CN domain: 1> if a signaling connection in variable SIGNALING CONNECTION ESTABLISHED for the specific CN domain identified with o IE "CN domain identity" exists: 2> start signaling connection release indication procedure. 1> otherwise 2> abort any ongoing signaling connection establishment for that specific CN domain as specified in 8.1.3.5a.
After start of signaling connection release indication procedure in CELL_PCH or URA_PCH state, UE shall: 1> if variable COMMON EDCH READY is set to TRUE: 2> move to CELL_FACH state; 2> reset timer T305 using its initial value if periodic cell update was configured by T305 in IE “Timers and UE constants in connected mode” set to any value other than “infinite”. 15 1> else: 2> if variable H_RNTI and variable C_RNTI are defined: 3> continue with signaling connection release indication procedure as below. 20 2> if not: 3> perform a cell update procedure, according to subitem 8.3.1, using the cause "uplink data transmission"; 3> when the cell 25 update procedure successfully completes: 4> continue with the signaling connection release indication procedure as below.
The UE must: 1> set the IE “DN Domain Identity” to the value indicated by the upper layers. The value of IE indicates the domain of CN whose associated signaling connection from the upper layers is indicating to be released; 5 1> remove signaling connection with identity indicated by upper layers of SIGNALING CONNECTION ESTABLISHED variable; 1> transmit a SIGNALING CONNECTION RELEASE INDICATION message on DCCH using AM 10 RLC.
When the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is confirmed by RLC the procedure ends.
Furthermore, if timer value T323 is stored in IE “Timers and UE constants in connected mode”, in variable TIMERS_AND_CONSTANTS, and if there is no CS domain connection indicated in the variable ESTABLISHED SIGNALING CONNECTION, the UE can: 1 > if upper layers indicate that there is no more PS data for an extended period: 2> if timer T323 is not running: 3> if UE is in CELL_DCH state or CELL_FACH state, or 3> if UE is in CELL_PCH state or URA_PCH state 25 and V316<N316: 4> if the UE is in CELL_PCH or URA_PCH state, increment V316 by 1; 4> set IE "CN Domain Identity" to PS domain; 4> set IE from "Signaling Connection Release Indication Cause" to "UE Requested PS Data end of session"; 4> transmitting a SIGNALING CONNECTION RELEASE INDICATION message on DCCH using AM RLC; 4> start timer T323. When the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is confirmed by RLC the procedure ends.
The UE shall be prevented from sending the SIGNALING CONNECTION RELEASE INDICATION message with the IE of "Signaling Connection Release Indication Cause" set to "PS Data Session Ended by 15 UE" as timer T323 is running. If PS data becomes available for transmission or UE receives a paging message that triggers cell update procedure, then UE must set V316 to zero. If the UE sends the SIGNALING CONNECTION RELEASE INDICATION message with the "Signaling Connection Release Indication Cause" IE set to "UE Requested PS Data end of session" in CELL_DCH or CELL_FACH state and in response the UE receiving a reconfiguration message that transitions the UE to CELL_PCH state or URA_PCH state then the UE shall set V316 to N316. The UE shall consider the reset message to be in response to the SIGNALING CONNECTION RELEASE INDICATION message if it is received within 500ms. 8.1.14.2a RLC Reset or Inter-RAT Change
If a reset of the transmit side of the RLC entity in RB2 radio bearer signaling occurs before the successful delivery of the SIGNALING CONNECTION RELEASE message is acknowledged by RLC, the UE shall: 1> retransmit the message SIGNALING CONNECTION RELEASE INDICATION on uplink DCCH using AM RLC in RB2 radio carrier signaling. If an Inter-RAT transfer from UTRAN procedure occurs before the successful delivery of the SIGNALING CONNECTION RELEASE INDICATION message is acknowledged by the RLC, the UE shall: 15 1> abort the signaling connection while in the new RAT. 8.1.14.3 Reception of SIGNALING CONNECTION RELEASE INDICATION by UTRAN
Upon receipt of a SIGNALING CONNECTION RELEASE INDICATION message, if the IE "Cause of the Signaling Connection Release Indication" is not included, the UTRAN requests the release of the signaling connection from the upper layers. Upper layers can then initiate the release of the signaling connection. 25 If the IE of "Signaling Connection Release Indication Indication" is included in the SIGNALING CONNECTION RELEASE INDICATION message the UTRAN can initiate a state transition to Idle state, CELL_PCH, URA_PCH or Efficient battery CELL_FACH state .8.1.14.4 Timer T323 expires When timer T323 expires: 1> UE can determine whether any subsequent indications from upper layers that have no more 5 PS data for an extended period, in which case it triggers the transmission of a INDICATION OF SIGNALING CONNECTION RELEASE in accordance with clause 8.1.14.2; 1> the procedure ends. 10 8.3 RRC Connection Mobility Procedures 8.3.1 IVR and Cell Update Procedures



8.3.1.1 General
The cell update and URA update procedures serve several main purposes: - notify the UTRAN after re-entering the service area in the URA_PCH or CELL_PCH state; - notify the UTRAN of an RLC unrecoverable error [16] in an AM RLC entity; - to be used as a supervisory mechanism in 5 state CELL_FACH, CELL_PCH, or URA_PCH through periodic update.
In addition, the URA update procedure also serves the following purpose: - retrieve a new URA identity after cell reselection for a cell that does not belong to the current URA assigned to the UE in URA_PCH state.
In addition, the cell update procedure also serves the following purposes: - updating the UTRAN with the current cell that the UE is camping after cell reselection; - act on a radio link failure in CELL_DCH state; - act on failure to transmit the EU CAPACITY INFORMATION message; 20 - for FDD and 1.28 Mcps TDD, if variable H_RNTI is not defined, and for 3.84 Mcps TDD and 7.68 Mcps TDD: when triggered in URA_PCH or CELL_PCH state, to notify the UTRAN of a transition to the state CELL_FACH due to UTRAN reception originating from paging or due to a request to transmit uplink data; - count the number of UEs in URA_PCH, CELL_PCH and CELL_FACH that are interested in receiving an MBMS transmission; - when activated in the URA_PCH, CELL_PCH and CELL_FACH status, notify the UTRAN of the interest of UEs to receive an MBMS service; - request the MBMS P-T-P RB configuration by the UE in CELL_PCH, URA_PCH and CELL_FACH status.
Cell update and URA update procedures can: 1> include an update of information related to mobility in the UE; 1> cause a state to transition from CELL_FACH state to CELL_DCH, CELL_PCH or URA_PCH state or in idle mode.
The cell update procedure may also include: - a re-establishment of AM RLC entities; 15 - a radio bearer release, radio bearer reset, transport channel reset or physical channel reset. 8.3.1.2 Initiation The UE shall initiate the 20-cell update procedure in the following cases: 1> transmit uplink data: 2> for FDD and 1.28 Mcps TDD, if variable H_RNTI is not defined, and for 3.84 Mcps TDD and 7.68 Mcps TDD: 25 3> if UE is in URA_PCH or CELL_PCH state; and 3> if timer T320 is not running: 4> if UE has uplink RLC data PDU or downlink RLC control PDU in RB1 or above to transmit: 5> perform cell update using causes "uplink data transmission". 3> else: 5 4> if ESTABLISHMENT CAUSE variable is defined: 5> perform cell update using cause of "uplink data transmission". 1> paging response: 10 2> if the criteria for performing cell update using the above-specified cause in the current sub-item is not met, and 2> if the UE in URA_PCH or CELL_PCH state receives a PAGINATION TYPE 1 message filling conditions 15 for starting a cell update procedure specified in subitem 8.1.2.3: 3> perform cell update using "paging response" cause. 1> radio link failure: 20 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met: 3> if the UE is in CELL_DCH state and the link failure criteria of radio are met, 25 as specified in subsection 8.5.6, or 3> if the transmission of the UE CAPACITY INFORMATION message fails as specified in subsection 8.1.6.6: 4> perform cell update using cause "link failure radio". 1> RB ptp MBMS request: 2> if none of the criteria for performing cell update with the causes specified above 5 in the current sub-item is met, and 2> if the UE is in the URA_PCH, Cell_PCH or Cell_FACH state and 2> if timer T320 is not working, and 2> if UE has to perform cell update 10 for ptp MBMS radio carrier request as specified in subitem 8.6.9.6: 3> perform cell update using cause "RB request ptp MBMS". 1> Re-enter the service area: 15 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in CELL_FACH or CELL_PCH state; and 20 2> if the UE has been out of the service area and re-enters the service area before T307 or T317 expires: 3> perform the cell update using the "re-enter service area" cause. 25 1> RLC unrecoverable error: 2> if none of the criteria for performing cell update with the causes specified above in the current subitem is met, and 2> if the UE detects RLC unrecoverable error [16], in an entity AM RLC: 3> perform cell update using cause "RLC unrecoverable error". 1> cell reselection: 5 2> if none of the criteria for performing cell update with the causes specified above in the current subitem is met: 3> if the UE is in CELL_FACH or CELL_PCH state and the UE performs cell reselection, or 10 3> if UE is in CELL_FACH state and variable C_RNTI is empty: 4> perform cell update using cause "cell reselect". 1> periodic cell update: 15 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in CELL_FACH or CELL_PCH state; and 20 2> if timer T305 expires, and 2> if the criteria for “in service area” as specified in subitem 8.5.5.2 are met, and 2> if periodic update is configured by 25 T305 in IE “Timers and UE constants in connected mode” set to any value other than "infinite": 3> for FDD: 4> if COMMON TRANSMISSION AND DCH variable DCH is set to FALSE: 5> perform cell update using cause "Cell update periodic". 4> if not: 5 5> reset timer T305; 5> and finish the procedure. 3> for 1.28 Mcps TDD and 3.84/7.68Mcps TDD: 4> perform cell update using cause "Periodic cell update". 10 1> MBMS reception: 2> if none of the criteria for performing cell update with the causes specified above in the current sub-item is met, and 2> if the UE is in the URA_PCH, Cell_PCH or 15 Cell_FACH state and 2> if the UE has to perform cell update for MBMS count as specified in subitem 8.7.4: 3> perform cell update using cause 20 "MBMS reception".
A UE in the URA_PCH state shall start the URA update procedure in the following cases: 1> URA reselection: 2> if the UE detects that the current URA assigned to the 25 UE, stored in the variable URA IDENTITY, is not present in the list of IVR identities in type 2 system information block; or 2> if the list of IVR identities in the type 2 system information block is empty, or 2> if the type 2 system information block cannot be found: 3> perform IVR update using the cause " change of URA". 5 1> periodic IVR update: 2> if the criteria for performing IVR update with the cause as specified above in the current subitem are not met: 3> if timer T305 expires and if 10 periodic update is set by T305 in IE "Timers and UE constants in connected mode" set to any value other than "infinite", or 3> if the conditions for starting an IVR update procedure 15 specified in 8.1.1.6.5 are met: 4> perform IVR update using the cause "Periodic IVR update".
When initiating the URA update or cell update procedure, the UE must: 1> if the UE has uplink RLC data PDU or uplink RLC control PDU in RB3 or above, to transmit, or 1> if the UE receives a TYPE 1 PAGING message 25 fulfilling the conditions to initiate a cell update procedure specified in subitem 8.1.2.3: 2> set the counter V316 to zero. 1> if T320 timer is running: 2> for T320 timer; 2> if UE has uplink RLC data PDU or uplink RLC control PDU in RB1 or above to transmit: 5 3> perform cell update using cause "uplink data transmission". 2> if not: 3> if cell update procedure is not triggered due to paging response or radio link failure, and 3> if UE has to perform cell update for ptp MBMS radio bearer request, as specified in subitem 8.6.9.6: 4> perform cell update using 15 cause "request RB ptp MBMS". 1> for timer T319 if it is running; 1> for timer T305; 1> for FDD and 1.28 Mcps TDD: 20 2> if UE is in CELL_FACH state; and 2> if the "common HS-DSCH system information" IE is included in the type 5 System Information Block or the type 5BIS System Information Block and 25 2> for 1.28 Mcps TDD, if the IE of "common E-DCH system information" in System Information Block type 5; 2> if the UE supports HS-DSCH reception in CELL_FACH state: 3> if variable H_RNTI is not defined or variable C_RNTI is not defined: 4> clear variable H_RNTI; 4> clear C_RNTI variable; 5 4> clear any stored “HARQ information” IEs; 4> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 4> and begin to receive the physical channel(s) mapped 10 of HS-DSCH transport channels of HS-SCCH and HSPDSCH type, using the parameters given by the "common HS-DSCH system information" IE(s) of according to the procedure in subitem 8.5.37. 3> snag: 15 4> receive the physical channel(s) mapped from HS-DSCH transport channels of type HS-SCCH and HS-PDSCH, using the parameters given by the IE(s) "common HS-DSCH system information " in accordance with the procedure described in sub-item 8.5.36; 20 4> determine the value for variable RNTI HSPA STORED SHPP CELL and take the corresponding measures, as described in subitem 8.5.56; 4> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures, 25 as described in subitem 8.5.47; 4> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 4> if READY FOR COMMON EDCH variable is set to TRUE: 5> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45 for FDD and 8.5.45a for 1.28 Mcps 5 TDD. 1> if the UE is in CELL_DCH state: 2> in the variable RB TIMER INDICATOR, set the IE "T314 expired" and the IE "T315 expired" as FALSE; 10 2> if the stored values of timer T314 and timer T315 are both equal to zero; or 2> if the value stored in timer T314 is equal to zero and there are no radio carriers associated with any radio access carriers 15 so that in variable STABILIZED RABS the value of the "Timer Reset" IE is set to "useT315 " and the signaling connection exists only for the CS domain: 3> release all its radio resources; 20 3> indicate release (abort) of established signaling connections (as stored in SIGNALING ESTABLISHED CONNECTION) and established radio access bearers (as stored in variable STABILIZED RABS) to upper layers; 25 3> clear variable ESTABLISHED SIGNALING CONNECTION; 3> clear variable STABILIZED RABS; 3> enter idle mode; 3> perform other actions when entering idle mode from connected mode as specified in 8.5.2; 3> and the procedure ends. 2> if the value stored in timer T314 is 5 equal to zero: 3> release all radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of the "Timer Reset" IE is set such as 10 "useT314"; 3> in the variable RB TIMER INDICATOR set the IE "T314 expired" to TRUE; 3> if all radio access bearers associated with a CN domain are released: 15 4> release the signaling connection for that CN domain; 4> remove signaling connection for that CN domain from SIGNALING CONNECTION ESTABLISHED variable; 20 4> indicate release (abort) of the signaling connection to the upper layers; 2> if the stored value of timer T315 is equal to zero: 3> release all radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of the "Timer Reset" IE is set to "useT315"; 3>In the RB TIMER INDICATOR variable set the IE "T315 expired" as TRUE. 3> if all radio access bearers associated with a CN domain are released: 4> release the signaling connection for that CN domain; 4> remove signaling connection for that CN domain from SIGNALING CONNECTION ESTABLISHED variable; 4> indicate the release (abort) of the signaling connection to the upper layers; 2> if the stored value of timer T314 is greater than zero: 3> if there are radio carriers associated with any radio access carriers so that in variable 15 RABS the value of the IE "Timer Reset" is set to " useT314": 4> start timer T314. 3> if there are no radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the "Timer Reset" IE value is set to "useT314" or "useT315" and the signaling connection exists for CS domain: 25 4> start timer T314. 2> if the stored value of timer T315 is greater than zero: 3> if there are radio carriers associated with any radio access carriers so that in variable STABILIZED RABS the value of IE "Timer Reset" is set to "useT315 ", or 3> if signaling connection exists for PS domain 5: 4> start timer T315. 2> for the released radio carrier(s): 3> clear the information about the radio carrier from variable STABILIZED RABS; 10 3> when all radio bearers belonging to the same radio access bearer are released: 4> indicate local end release of the radio access bearer to upper layers 15 using the CN domain identity along with the identity of RAB stored in variable STABILIZED RABS; 4> clear all information about radio access carrier from RABS 20 variable stabilized. 2> if variable DCH AND TRANSMISSION is set to TRUE: 3> set DCH AND variable TRANSMISSION to FALSE; 25 3> for any EAGCH and E-HICH receiving procedures; 3> for FDD, for all E-RGCH receiving procedures. 3> for FDD, for any E-DPCCH and E-DPDCH transmission procedures. 3> for 1.28 Mcps TDD, for any E-PUCH transmission procedure. 3> clear the E_RNTI variable; 5 3> act as if the “MAC-es/e reset indicator IE” was received and set to TRUE; 3> release all E-DCH HARQ features; 3> no longer consider any radio link to be the serving E-DCH radio link. 10 2> move to CELL_FACH state; 2> select a suitable UTRA cell on the current frequency according to [4]; 2> clear variable E_RNTI and: 3> determine the value for variable RNTI HSPA STORED PCH CELL 15 and take the corresponding measures as described in subitem 8.5.56; 3> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures as described in subitem 8.5.47; 20 3> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46. 2> for 3.84 Mcps TDD and 7.68 Mcps TDD; or 2> for FDD and 1.28 Mcps TDD, if the UE does not support 25 HS-DSCH reception in CELL_FACH state, or 2> if the "common HS-DSCH system information" IE is not included in the Block of Type 5 System Information or Type 5BIS System Information Block; or 2> for 1.28 Mcps TDD, if the IE of "common E-DCH system information" is not included in the Type 5 System Information Block: 3> select the PRACH according to subitem 5 8.5. 17; 3> select the Secondary CCPCH according to sub-item 8.5.19; 3> use the transport format set given in system information as specified in 10 subitem 8.6.5.1; 3> take actions related to GENERAL RECEPTION
DE DSCH HS variable as described in subitem 8.5.37a. 2> otherwise: 15 3> if READY FOR COMMON EDCH variable is set to TRUE: 4> configure Enhanced Uplink in CELL_FACH state and idle mode as specified in subitem 8.5.45. 3 20 3> if not: 4> select the PRACH according to subitem 8.5.17 and: 5> use for the PRACH the set of transport format given in system information, as specified in subitem 8.6.5.1. 3> clear H_RNTI variable; 3> clear any stored “HARQ information” IEs; 3> redefine the MAC-ehs entity [15]; 3> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 3> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 5 2> set variable ORDERED_RECONFIGURATION to FALSE. 1> set the PROTOCOL ERROR INDICATOR, FAULT INDICATOR, UNSUPPORTED CONFIGURATION and INVALID CONFIGURATION as FALSE; 10 1> set the BEGIN CELL UPDATE variable to TRUE; 1> if any IEs related to HS-DSCH are stored in the UE: 2> clear any stored "downlink HS-PDSCH information" IE; 2> clear any stored “FDD Downlink Secondary Cell Information” IE; 2> clear all variable TARGET CELL PRESET inputs; 20 2> for 1.28Mcps TDD, clear the IE of "Connection “Midamble" HS-PDSCH" and the IE of "CONNECTION HS-SCCH Definition" in IE ”Multi-carrier DL Information”; 2> determine the value for variable DSCH HS 25 RECEPTION and take the corresponding measures, as described in subitem 8.5.25; 2> determine the value for variable SECONDARY CELL HS DSCH RECEPTION and take the corresponding measures, as described in subitem 8.5.51. 1> if any E-DCH related IEs are stored in the UE: 2> clear any stored “E-DCH information” IE; 5 2> determine the value for DCH TRANSMISSION AND variable and take the corresponding measures as described in subitem 8.5.28. 1> if any IEs of "DTX-DRX timing information" or "DTX-DRX information" are stored in the UE: 2> determine the value for variable DTX DRX STATUS and take the corresponding measures as described in subitem 8.5.34. 1> if the IE "less HS-SCCH information" is stored in the UE: 2> determine the value for the LOW SCCH STATE OF variable HS and take the corresponding measures as described in subitem 8.5.35. 1> if any MIMO related IEs are stored in the UE: 2> determine the value for variable MIMO STATE and take the corresponding measures as described in subitem 8.5.33. 1> for 1.28 Mcps TDD, if the IEs "Control Channel DRX 25 Information" are stored in the UE: 2> determine the value for variable CONTROL CHANNEL DRX STATE and take the corresponding measures as described in subitem 8.5.53. 1> for 1.28 Mcps TDD, if the IE "SPS information" is stored in the UE: 2> determine the value for variable E DCH SPS STATE and take the corresponding measures as described in subitem 8.5.54; 5 2> determine the value for variable HS DSCH SPS STATUS and take the corresponding measures, as described in subitem 8.5.55. 1> if the UE is not already in CELL_FACH state: 2> move to CELL_FACH state; 10 2> determine the value for variable RNTI HSPA STORED SHP CELL and take the corresponding measures, as described in subitem 8.5.56; 2> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures, as described in subitem 8.5.47; 2> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 2> for 3.84 Mcps TDD and 7.68 Mcps TDD, or 20 2> for FDD and 1.28 Mcps TDD, if the UE does not support HS-DSCH reception in CELL_FACH state, or 2> if the IE of " common HS-DSCH system information" is not included in the type 5 System Information Block or the type 5BIS System Information Block; or 2> for 1.28 Mcps TDD, if the IE of "common E-DCH system information" is not included in the Type 5 System Information Block: 3> select the PRACH according to subitem 8.5.17 ; 3> select the Secondary CCPCH according to sub-item 8.5.19; 3> use the transport format set 5 given in system information as specified in subitem 8.6.5.1; 3> take the actions related to the GENERAL variable DSCH HS RECEPTION as described in subitem 8.5.37a. 10 2> otherwise: 3> if READY FOR COMMON EDCH variable is set to TRUE: 4> configure Enhanced Uplink in CELL_FACH state and idle mode as specified 15 in subitem 8.5.45. 3> if not: 4> select the PRACH according to subitem 8.5.17 and: 5> use for the PRACH the transport format set 20 given in system information, as specified in subitem 8.6.5.1. 3> if variable H_RNTI is not defined or variable C_RNTI is not defined: 4> clear the variable C_RNTI; 25 4> clear the H_RNTI variable; 4> clear any stored “HARQ information” IEs; 4> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 4> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 3> if not: 4> receive the HS-DSCH according to the procedure described in subitem 8.5.36. 1> if UE perform cell reselection: 2> clear the variable C_RNTI, and 2> stop using this C_RNTI that has just been cleared of variable C_RNTI in MAC; 10 2> for FDD and 1.28 Mcps TDD, if variable H_RNTI is set: 3> clear the variable H_RNTI, and 3> stop using this H_RNTI that has just been cleared from variable H_RNTI on MAC; 15 3> clear any stored “HARQ information” IEs; 2> for FDD and 1.28 Mcps TDD, if variable E_RNTI is set: 3> clear the variable E_RNTI. 20 2> determine the value for variable RNTI HSPA STORED SHPP CELL and take the corresponding measures, as described in subitem 8.5.56; 2> determine the value for READY FOR COMMON EDCH variable and take the corresponding measures, as described in subitem 8.5.47; 2> determine the value for COMMON TRANSMISSION AND variable DCH and take the corresponding measures, as described in subitem 8.5.46; 2> for FDD and 1.28 Mcps TDD, if the UE supports HS-DSCH reception in CELL_FACH state and the IE of "common HS-DSCH system information" is included in the type 5 System Information Block or Block 5BIS Type System Information: 5 3> redefine the MAC-ehs entity [15]. 3> set the variable DSCH HS RECEPTION CCCH ENABLE to TRUE; 3> and start receiving the HS-DSCH in accordance with the procedure provided for in sub-item 8.5.37. 10 2> if not: 3> take the actions related to the GENERAL RECEPTION OF DSCH HS variable as described in subitem 8.5.37a. 1> set CFN in relation to SFN of current cell according to subitem 8.5.15; 1> in case of a cell update procedure: 2> define the content of the CELL UPDATE message according to subitem 8.3.1.3; 20 2> send the CELL UPDATE message for transmission on the uplink CCCH. 1> in case of an URA update procedure: 2> define the content of the URA UPDATE message according to subitem 8.3.1.3; 2> send the URA UPDATE message for transmission on the uplink CCCH. 1> set counter V302 to 1; 1> start timer T302 when MAC layer indicates message transmission success or failure. 10.3.3.43 Timers and UE Constants in Connected Mode
This information element specifies constant and timer values used by the UE in the connected mode.



13.4.27x SCRI TRIGGED IN PCH STATE This variable contains information about whether a SIGNALING CONNECTION RELEASE INDICATION message was triggered in CELL_PCH or URA_PCH states. There is such a variable 5 in the UE.
13.2 Counters for EU


13.3 EU Constants and Parameters

APPENDIX D
From 25,331 section 8.2.2, Figure 8.2.2-3: represents a radio carrier reconfiguration, normal flow. The message is described here, with the proposed addition in 5 italics and bold: 10.2.27 RADIO CARRIER RESET This message is sent from UTRAN to reset the parameters related to a QoS change or to release and configure a radio bearer radio 10 used for ptp transmission of MBMS services of transmission type. This procedure can also change MAC multiplexing, reconfigure transport channels and physical channels. This message is also used to perform a transfer from Iu mode GERAN to UTRAN. 15 RLC-SAP: AM or UM or sent via GERAN Iu mode Logical channel: DCCH or sent via GERAN Iu mode Direction: UTRAN ^ UE

权利要求:
Claims (18)
[0001]
1. Method for processing an indication message by a user equipment, characterized in that the method comprises: in the user equipment: whether the upper layers indicate that there is no more PS data (switched packet) for a period of prolonged time, and if a count of how many indication messages were triggered in a CELL_PCH state or an URA_PCH state is less than a maximum number: increment the count of how many indication messages were triggered in the CELL_PCH state or in the URA_PCH state; define a cause in an indication message; send the referral message; and resetting the count of how many indication messages were triggered on satisfying at least one reset condition, the at least one reset condition comprises receiving PS data from a network, and each of the indication messages counted in the count has a cause defined by "UE requested end of PS data session (user equipment)".
[0002]
2. Method according to claim 1, characterized in that the cause is defined as "end of session of PS data requested by UE".
[0003]
3. Method according to claim 1, characterized in that the indication message is a signaling connection release indication message.
[0004]
4. Method according to claim 1, characterized in that it further comprises the transition to a CELL_FACH state to send the message indicating whether the user equipment is in the URA_PCH state.
[0005]
5. Method according to claim 1, characterized in that it further comprises inhibiting the sending of the indication message while an inhibit timer is running.
[0006]
6. Method according to claim 1, characterized in that the maximum number is 1.
[0007]
7. Method according to claim 1, characterized in that it further comprises determining whether the upper layers indicate that there is no more PS data for the extended period of time.
[0008]
8. Method according to claim 1, characterized in that the UE determines whether the count of how many indication messages were triggered while in the CELL_PCH state or in the URA_PCH state is less than the maximum number.
[0009]
9. Method according to claim 1, characterized in that the indication message is sent to the network for a transition of the user equipment to a state of radio resource control (RRC) efficient in terms of battery or for an idle mode.
[0010]
10. User equipment configured to process indication messages, the user equipment characterized by the fact that it is configured to: if the upper layers indicate that there is no more PS (packet switched) data for an extended period; and if a count of how many indication messages were triggered in a CELL_PCH state or in an URA_PCH state is less than a maximum number: increment the count of how many indication messages were triggered in the CELL_PCH state or in the URA_PCH state; define a cause in a prompt message and send the prompt message.
[0011]
11. User equipment according to claim 10, characterized in that it is configured to set the cause for "EU-requested PS data end-of-session".
[0012]
12. User equipment according to claim 10, characterized in that the indication message is a signaling connection release indication message.
[0013]
13. User equipment according to claim 10, characterized in that it is further configured to transition to a CELL_FACH state to send the message indicating whether the user equipment is in the URA_PCH state.
[0014]
14. User equipment according to claim 10, characterized in that it is configured to inhibit the sending of the indication message with defined causes while an inhibit timer is running.
[0015]
15. User equipment according to claim 10, characterized in that the maximum number is 1.
[0016]
16. User equipment according to claim 10, characterized in that it is further configured to determine whether the upper layers indicate that there is no more PS data for the extended period of time.
[0017]
17. User equipment according to claim 10, characterized in that it is further configured to determine whether the count of how many indication messages were triggered while in the CELL_PCH state or in the URA_PCH state is less than the maximum number.
[0018]
18. User equipment according to claim 10, characterized in that the indication message is sent to the network for a transition of the user equipment to a battery-efficient radio resource control (RRC) state or for an idle 15 mode.

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法律状态:
2018-03-06| B25D| Requested change of name of applicant approved|Owner name: BLACKBERRY LIMITED (CA) |

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2018-03-27| B25G| Requested change of headquarter approved|Owner name: BLACKBERRY LIMITED (CA) |

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2018-03-27| B15K| Others concerning applications: alteration of classification|Ipc: H04W 76/00 (2018.01) |

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2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-02-04| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-02-27| B15K| Others concerning applications: alteration of classification|Free format text: A CLASSIFICACAO ANTERIOR ERA: H04W 76/00 Ipc: H04W 76/27 (2018.01), H04W 76/32 (2018.01) |

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2021-03-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2021-05-04| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 04/05/2021, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US26381809P| true| 2009-11-23|2009-11-23|

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US61/263,818|2009-11-23|

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PCT/EP2010/064860|WO2011060998A1|2009-11-23|2010-10-05|State or mode transition triggering based on sri message transmission|

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