• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    METHOD FOR ADDING AND / OR REMOVING AN OPERATING CELL IN A HETEROGENEOUS RADIOCOMMUNICATION NETWORK, METHOD FOR OPERATING A BASE STATION, AND, BASE STATION Support mechanisms for adding and / or removing an operating cell in a heterogeneous radio network having a first type of basic cell to provide basic radio coverage and a second type of cell associated with a basic cell such as a capacity reinforcement cell. A capacity reinforcement cell is selectively turned on and off (S1); when a capacity booster cell is disconnected the cell does not exist via the air interface while cell configuration information is maintained and when a capacity booster cell is connected, the cell becomes available again via the air interface. A shutdown indication and activation call message for linking the capacity booster cell are communicated (S2) between a base station serving the capacity booster cell and the base station serving the base cell. In this way, energy savings can be supported without interrupting the availability of the service.
    公开号:BR112012003288B1
    申请号:R112012003288-7
    申请日:2010-05-28
    公开日:2021-02-02
    发明作者:Elena Voltolina；Tarmo Kuningas
    申请人:Telefonaktiebolaget Lm Ericsson ( Publ )；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    [001] The invention in general refers to a cellular radio communication network, and more particularly to the energy saving mechanisms in a heterogeneous network having at least two different types of cells. FUNDAMENTALS
    [002] Energy costs can account for more than half of the operating expenses of the mobile terminal operator, so radio network solutions that improve energy efficiency are not only good for the environment, but also make business sense for operators and sustainable support and business profits.
    [003] Energy savings can be achieved through a variety of solutions such as optimal network designs following Product Lifecycle Assessment, creating energy efficient site solutions and introducing innovative use of alternative energy sources to operate at network.
    [004] Within the 3GPP environment, for example, no energy saving solution was agreed upon during Version 8 (neither for LTE nor for UMTS radio access) and in general little discussion has taken place so far.
    [005] Although energy saving as a slogan has appeared on the agenda of meetings of the 3GPP RAN working groups, no solution has been pursued so far.
    [006] On the other hand, it has been considered that in GSM there is the possibility of applying energy saving actions by turning one or more 200kHz carriers on and off, since more than one 200kHz carrier is typically employed per cell, according to cell load, and similar solutions can be envisioned at the carrier level for multiple WCDMA carriers and in the older LTE of Version Release 10, where carrier aggregation exists. So there is no energy saving support for LTE in previous versions or for WCDMA without the option of multiple carriers. SUMMARY
    [007] There is a general general need for improvements in the field of energy savings for radio communication networks.
    [008] The invention refers to the support mechanisms through which radio access networks, where different types of cells are adopted, can, in a self-organized way, add and / or remove cells from the operation when necessary in order to achieve energy savings, and without interrupting service availability.
    [009] According to a first aspect a method is provided to add and / or remove a cell from the operation in a heterogeneous radio communication network having at least two different types of cells, including a first type of basic cell to provide radio coverage basic and a second type of cell associated with a basic cell such as the capacity reinforcement cell. The method selectively comprises turning the capacity reinforcement cell on and off; when the capacity booster cell is turned off the cell does not exist through the air interface while cell configuration information is maintained and when the capacity booster cell is turned on, cell definition information is relayed and the cell becomes available again through the air interface. The method further comprises communicating a shutdown indication and an activation call message to connect the capacity booster cell between a base station serving the capacity booster cell and a base station serving the base cell.
    [0010] In this way energy savings can be achieved without interrupting the availability of the service.
    [0011] According to a second aspect, a method is provided to operate a base station serving a basic cell providing basic radio coverage. The base cell has a neighboring cell relationship to an associated capacity booster cell served by another base station. In the method, the base station serving the base cell is receiving an indication that the associated capacity booster cell is turned off via the air interface for energy saving purposes, and maintaining corresponding cell configuration information. The base station serving the base cell is sending an activation call message to the base station serving the associated capacity booster cell when it is decided that the base station serving the base cell requires the capacity booster cell to be operational again .
    [0012] A base station is also provided to carry out such a method.
    [0013] This provides support for energy savings, while service availability can be maintained.
    [0014] According to a third aspect, a method is provided to operate a base station serving the capacity reinforcement cell. The capacity booster cell has a neighboring cell relationship to an associated base cell, providing basic radio coverage, served by another base station. In the method, the base station serving the capacity booster cell is shutting down, the capacity booster cell through the air interface for energy saving purposes, maintaining cell configuration information, and sending an indication that the fuel cell capacity booster is turned off for energy saving purposes for the base station serving the base cell.
    [0015] A base station is also provided to carry out such a method.
    [0016] This provides energy savings, and the maintained cell configuration information supports quick and easy cell re-activation when needed.
    [0017] Other advantages offered by the invention will be appreciated when reading the description of the modalities of the invention below. BRIEF DESCRIPTION OF THE DRAWINGS
    [0018] The invention, together with objects and additional advantages of the same, can be better understood by making reference to the following description considered together with the attached drawings, in which:
    [0019] Fig. 1 is a schematic flow diagram of an example of a method for adding and / or removing an operating cell in a heterogeneous radio communication network having at least two different types of cells.
    [0020] Fig. 2 is a schematic flow diagram of an example of a method for a base station serving a basic cell providing basic radio coverage.
    [0021] Fig. 3 is a schematic flow diagram of an example method for a base station serving a capacity reinforcement cell.
    [0022] Fig. 4 is a schematic signaling and exemplary action diagram illustrating an example of actions and signaling between a base station of a capacity reinforcement cell and a base station of a basic cell.
    [0023] Fig. 5 is a schematic diagram illustrating an example of cells of different hierarchical levels.
    [0024] Fig. 6 is a schematic diagram illustrating the procedure for updating the eNB of the X2AP protocol.
    [0025] Fig. 7 is a schematic block diagram illustrating an example of the base station serving a basic cell.
    [0026] Fig. 8 is a schematic block diagram illustrating an example of the base station serving a capacity reinforcement cell.
    [0027] Fig. 9 is a schematic block diagram illustrating another example of the base station serving a basic cell.
    [0028] Fig. 10 is a schematic block diagram illustrating another example of the base station serving a capacity reinforcement cell.
    [0029] Fig. 11 is a schematic block diagram illustrating an example of an activation call unit.
    [0030] Fig. 12 is a schematic flow diagram of another example of a method for a base station serving a basic cell to provide basic radio coverage.
    [0031] Fig. 13 is a schematic flow diagram of another example method for a base station serving a capacity reinforcement cell.
    [0032] Fig. 14 is a schematic diagram illustrating an example of a scenario with base stations serving different types of cells. DETAILED DESCRIPTION
    [0033] Throughout the drawings, the same reference numbers are used for similar or corresponding elements.
    [0034] As mentioned above, a basic idea is to add and / or remove cells from the operation in a heterogeneous radio communication network when necessary in order to achieve energy savings, and without interrupting the availability of the service, for example considering related cell parameters to the load such as information / statistics on the load conditions of the considered cell and / or load balancing actions.
    [0035] In a heterogeneous network, there may be a first type of basic cell to provide basic radio coverage and a second type of cell associated with a basic cell such as a capacity reinforcement cell, i.e. a capacity reinforcement.
    [0036] Fig. 1 is a schematic flow diagram of an example of a method for adding and / or removing an operating cell in a heterogeneous radio network having at least two different types of cells. The different types of cells include a first type of basic cell to provide basic radio coverage and a second type of cell associated with the basic cell as a capacity reinforcement cell. Step S1 selectively includes turning the capacity booster cell on and off. When the capacity booster cell is switched off, the cell does not exist via the air interface while cell configuration information is maintained. When the capacity booster cell is switched on, cell definition information is relayed and the cell becomes available again via the air interface. Step S2 includes communicating a shutdown indication and an activation call message for linking the capacity booster cell between a base station serving the capacity booster cell and a base station serving the base cell. In this way, energy savings can be achieved without interrupting the availability of the service.
    [0037] As will be exemplified later, communication between the base station serving the capacity booster cell and the base station serving the base cell can, for example, be carried out on the Radio Network Layer (RNL) in the Application Protocol X2 (X2AP), although other options also exist. For example, there are options allowing the base station serving the base cell and the base station serving the associated capacity booster cell to be radio network elements of different radio access technologies.
    [0038] With reference to Fig. 2, an example of a method for the base station serving the base cell will be described. It is assumed that the base cell has a neighboring cell relationship to an associated capacity booster cell served by another base station. Step S11 includes receiving an indication that the associated capacity booster cell is shut down via the air interface for energy saving purposes, and maintaining corresponding cell configuration information. Step S12 includes sending an activation call message to the base station serving the associated capacity booster cell when it is decided that the base station serving the base cell requires the capacity booster cell to be operational again. This provides support for energy savings, while service availability can be maintained.
    [0039] In an example of a particularly interesting implementation, steps S11 and S12 of receiving an indication and sending an activation call message are performed on the Radio Network Layer (RNL) in the X2AP protocol, as will be discussed later .
    [0040] For example, the base station serving the base cell may indicate that it needs the capacity reinforcement cell (s) to be operational again via an activation call message in the X2AP protocol. The activation call message is preferably in the form of a Cell Activation Request.
    [0041] For example, the indication of displacement can be received in the so-called procedure for updating the eNB configuration of the X2AP protocol. In addition, the reason for shutting down as an action due to energy saving purposes can be indicated in the eNB configuration update procedure.
    [0042] When the base station serving the base cell receives the indication that the capacity booster cell is turned off for energy saving purposes, it maintains the cell configuration information related to the capacity booster cell. In this way, the base cell base station can still "count" the inactive capacity booster cell, and send an activation call to the capacity booster cell base station when needed.
    [0043] The RNL-based solution using the X2AP protocol is an efficient intra-RAT (Radio Access Technology) solution, especially for intra-LTE.
    [0044] However, the invention is also effective for interRAT scenarios, where the base station serving the base cell and the base station serving the associated capacity reinforcement cell are radio network elements of different radio-access technologies (RATs) ).
    [0045] As will be discussed below, the base station serving the base cell preferably makes a decision to activate for activation of the capacity reinforcement cell based on the parameters related to the load. For example, the decision to activate to activate the capacity booster cell may be based on the statistics on the load on the base cell and / or load balancing actions that the base cell triggers towards the capacity booster cell.
    [0046] The base station (eNB) is configured to carry out the method outlined above in connection with Fig. 2.
    [0047] With reference to Fig. 3, an example of a method for the base station serving the capacity reinforcement cell will be described. The capacity booster cell is assumed to have a neighboring cell relationship to an associated base cell, providing basic radio coverage, served by another base station. Step S21 includes shutting down the capacity booster cell via the air interface for energy saving purposes, while maintaining cell configuration information. Step S22 includes sending an indication that the capacity booster cell is turned off for energy saving purposes to the base station serving the base cell. This provides energy savings, and the corresponding cell configuration information that is maintained at the base station for the "inactive" capacity booster cell supports quick and easy reactivation of the cell when needed.
    [0048] In an example of a particularly interesting implementation, step S22 of sending an indication is performed on the Radio Network Layer (RNL) in the X2AP protocol, as will be discussed later.
    [0049] For example, shutdown of a capacity booster cell can be indicated in the procedure for updating the eNB configuration of the X2AP protocol. In addition, the reason for shutting down as an action due to energy saving purposes can be indicated in the eNB configuration update procedure.
    [0050] Preferably, although not required, the step of shutting down the cell is self-powered, and the base station serving the capacity booster cell can, for example, make the decision to shut down the capacity booster cell based on load in the capacity reinforcement cell.
    [0051] The base station (eNB) is configured to perform the method outlined above in connection with Fig. 3.
    [0052] Fig. 4 is an exemplary schematic signaling and action diagram illustrating an example of actions and signaling between a base station of a capacity reinforcement cell and a base station of a basic cell. When appropriate, the capacity booster cell base station performs a shutdown (A) of the capacity booster cell, and sends a shutdown indication (B) for energy saving purposes to the base cell base station. When the capacity booster cell is subsequently needed again for capacity and / or load reasons, the base cell base station makes a decision to activate (C) and sends a corresponding activation call message (D) to the station base of the capacity reinforcement cell. The capacity booster cell base station binds (E) the capacity booster cell based on the wake-up call message. Optionally, the capacity booster cell base station can send a response (F) to the base cell base station indicating that the capacity booster cell ligament was successful, or alternatively that the ligament failed.
    [0053] In the following, the invention will be discussed with reference to exemplary and non-limiting additional modalities.
    [0054] The cell expanding capacity can be selectively turned on and off based on the consideration of parameters related to the load including for example load conditions and / or load balancing information. General service availability is guaranteed by the layer providing basic coverage and is not impacted by capacity regulation / energy saving actions.
    [0055] A basic characterization of the 'types' of cells involved is that a first type of cell is to provide basic radio coverage, and cannot be turned off without creating a failure in the coverage, ie interruption without service, while a second type of cell is associated with the base cell (via a "neighboring" cell relationship) as a capacity enhancement cell, ie a capacity enhancer.
    [0056] Consequently, there is usually a basic cell that in general should not be turned off, and a capacity booster cell that can be turned on and off based on consideration of the general load conditions in the cell (s) and / or information on load balancing such as load balancing actions / requests / drives going to a capacity expander. The capacity booster cell can be turned off in the event of a low load while the base cell continues to provide basic coverage. Based on information about load conditions of the basic cell and / or load balancing actions, the basic cell can activate the associated capacity reinforcement cell (s) to increase the capacity of the network. For example, if a base station (eg eNB) controlling a cell providing basic coverage detects a surge in the load then the base station (eg eNB) can activate the 'neighbor' to increase the capacity of the network. More advanced control mechanisms can make the decision to activate based on statistics on load conditions and / or load balancing actions such that a capacity expander will be activated at appropriate times (such as peak traffic hours), to start removal of charge from the cell providing basic coverage. For example, the cell providing basic coverage counts how many users / how much traffic it serves at the point when it starts to trigger transfer requests for communication related to load balancing towards the capacity expansion cell, or it remembers the level of load that it has on average when it starts to trigger such requests for transfer of communication passage. These indicators (load level and / or number of users / traffic served) can represent the limit when the capacity expansion cell needs to be turned on in real time / dynamic operation. In this example, an important aspect is therefore, the load statistics used together with at least one corresponding dynamic parameter value to trigger a basic cell to request activation of a capacity expansion cell. For example, a dynamic load related parameter value can be compared with a statistically derived load related value limit as a basis for making the decision to activate.
    [0057] The invention has the advantage of not impacting the service by making use of the knowledge that some cells are there for basic coverage and some are there to increase capacity and each cell knows its “neighbor”.
    [0058] The present invention does not focus on using mobility activation as a criterion to effect disconnection and on, but rather it is based on the cell parameter related to the load and information / statistics on load balancing actions and / or load conditions monitored. For example, the cell can be activated when it is judged 'statistically' that it needs to be put into operation and not just because the user's equipment may need it for transfer of communication passage. Basically, the invention is controlled by the network and controlled cell activation / deactivation is generally service-independent in the sense that the decision to switch off or on is not dependent on the needs or bandwidth requirements of single users. More properly, the invention preferably considers information and / or statistics about the general load conditions (such as load levels) in the basic cover cell and / or information / statistics about the load balancing situation.
    [0059] For example, the basic cover cell can be a 'macro' cell, and the capacity boosting cell can be a 'micro' cell. Macro and micro cells can (and do) cover at least partially overlapping areas, but they are independent cells (in terms of cell ids, etc.). In particular, an exemplary feature of the n-cell relationship between the micro and the macro is that their areas partially overlap, but the antennas are not co-located. Typically, a micro cell would act as a hot spot and would be defined as a neighbor to a macro under it, such that, for example, fast passing UEs can be kept in the macro layer, while static ones (in the location of the hot spot) can perform HO for the micro cell (and if considered 'outside' the base layer).
    [0060] In an illustrative and non-limiting example, the base cell is a macro cell and a capacity amplifier is a micro cell (as the size coverage area would make sense for this purpose). However, any heterogeneous 'thinning' with the above characteristic would do for this purpose. The base cell and the capacity reinforcement cell preferably represent different types of cells in a heterogeneous radio communication network.
    [0061] In the particular example of a hierarchical cell structure (HCS), such as a macro-micro architecture, having two or more layers, there will be a distinction between different layers, and the idea is to incorporate the inventive mechanisms for shutdown or controlled ligation of cells in the concept of HCS. An exemplary deployment scenario thus involves different cell types (i.e. macro, micro, peak, etc.) in a hierarchical cell structure (HCS). The concept of HCS with such is prior art and it is described for LTE in [2].
    [0062] In this particular scenario, it is assumed that cells in one or more of the lower HCS layers provide basic coverage, while cells in one or more of the upper HCS layers add additional capacity to a network. In other words, the base cell is normally a cell in a lower HCS layer and the capacity boosting cell is a cell in an upper HCS layer.
    [0063] In the exemplary case of an LTE network, eNB-s with neighboring cells in an area may have an X2 association.
    [0064] It is also assumed here that the cell providing basic coverage, eg. macro cell, is aware that the aforementioned neighbor is characterized as a capacity reinforcement cell, e.g. a micro cell. So the cell providing basic coverage and the cell increasing capacity are in a different layer of HCS.
    [0065] The deployment of the network described in the network is represented in Fig. 5 where cells A1 and A2 provide basic coverage while cell B1 increases the capacity in a given area.
    [0066] Illustrative and non-limiting examples of energy saving mechanisms: Self-powered shutdown
    [0067] In order to obtain energy savings, the cell (s) adopted as a capacity amplifier is monitoring the traffic load and is able to shut down when traffic falls below a certain limit and remains below the limit for a determined time.
    [0068] The entity that performs the disconnection assessment may be located in the eNB but also in some other node, eg. Domain Manager or Network Manager. Ligament induced by neighboring cell
    [0069] During operation, traffic load statistics are collected in cells providing basic coverage, for example: • load in a cell providing basic coverage; and / or • load balancing action providing basic coverage triggers towards the capacity expander.
    [0070] The collection of statistics allows the understanding of the point when it is more appropriate to initiate load removal, i.e. the point when asking the cell to increase the capacity to connect. In other words, the information / statistics collected is analyzed to identify a boundary limit (in terms of users / traffic served and / or load level, as previously described) in order to make an appropriate decision for controlled activation of a cell. capacity building.
    [0071] Connecting in general means that the power amplifier and energy consumption components connect, a cell definition information is retransmitted and the cell becomes available again via the air interface. When the cell is switched off, the cell does not exist via the air interface (the corresponding eNB is still connected, so the cell configuration can be maintained).
    [0072] The entity that makes the assessment to call may be located in the eNB but also in some other node, for example, Network Manager or Domain Manager.
    [0073] Regarding the collection of statistics, this can for example be in terms of how many drives towards the capacity amplifier that were carried out (a counter or something like that) or directly in terms of load (load is defined in X2AP by different entities already for the purpose of load balancing actions). Examples of triggers could be requests for transfer of communication path related to load balancing and / or rejections for UEs and connected RRC mode or cell re-selection parameter settings, eg. priority and signal strength, for RRC idle UEs. A limit is defined (this would preferably be a parameter configurable by the operator) as well as a period of hysteresis (it can also be configurable), such that the operator can tune the behavior of the 'basic cell - enlarging cell' pair according to other aspects of the network at that location.
    [0074] In other words, the capacity booster cell can be selectively turned on and off, and when the capacity booster cell is turned off, also referred to as inactive, the cell does not exist through the air interface although information from cell configuration is maintained and when the capacity booster cell is turned on, cell definition information is relayed and the cell becomes available again via the air interface. There is also support for communication related to the shutdown and turning on of the capacity reinforcement cell, including eg. a shutdown indication and an activation call (eNB) message serving the backup cell to connect between the base station (eNB) serving the base cell and the capacity base station, as will be exemplified below. Communication between base cell and inactive capacity booster cell
    [0075] The communication between the basic coverage providing cell and the inactive capacity booster cell can be carried out in a number of different ways, such as for example: • Realization of TNL: SCTP Init; • Realization of RNL: new X2AP message, namely for example 'Cell Activation request', as an alternative, eNB having the basic cell starts sending load balancing requests (requests to unload) towards the inactive cell; • Performing O&M: active eNB sends request to activate, to the Domain Manager or Network Manager via management interfaces and Domain Manager / NM relays the request to the eNB having the cell inactive.
    [0076] This will be explained in more detail below. Realization based on TNL
    [0077] If cells controlled by an eNB in the upper HCS layer, e.g. micros cells, which are adjacent to the cell of the lower HCS layer, e.g. macro cells, are all significant for increasing capacity, and there is an X2 association between the corresponding eNB-s, so the mechanisms described above can be performed without impacting the signaling protocols.
    [0078] In this case in fact, disconnection of a cell / cells of capacity expansion by the eNB controlling them becomes visible / known to the eNB controlling cells that provide basic coverage / capacity by two means: • The measurement reports from of UEs do not contain dedicated cells for increasing capacity; and • The X2 association between eNB-s correspondents has been released.
    [0079] Since the eNB that controls the cell providing basic coverage / capacity detects a load condition that motivates the configuration of the capacity expansion cell (s), the eNB that controls the cell providing basic coverage / capacity could start the establishment from the association of SCTP X2 that the eNB controlling capacity reinforcement cells is able to interpret as a request to 'activate'. Upon receipt of the indication of 'activate', the eNB controlling the capacity reinforcement cells would configure respective cells and complete the establishment of the respective SCTP X2 association. Realization based on RNL
    [0080] The realization of the energy saving mechanism described above can also be done without the restrictions described in the previous sub-clause through the modification of the current 3GPP standard (in particular [1] is impacted).
    [0081] The so-called X2AP protocol provides a number of functions such as Mobility Management, load management, X2 interface configuration, X2 interface re-configuration, eNB configuration update and so on.
    [0082] In particular, the eNB configuration update procedure is designed to update application level configuration data required for two eNBs to properly interoperate over the X2 interface. With reference to Fig. 6, an eNBi initiates the procedure by sending an eNB configuration update message to an eNB2 partner including an appropriate configuration of the updated configuration data that has just come into operational use. Upon receipt of the eNB configuration update message from CNB1, eNB2 updates the information to eNB1 with respect to data such as Served Cell Information.
    [0083] Considering that: • At the interface of X2, there is currently no 'interface shutdown' mechanism in the RNL layer (X2AP); • In X2AP a procedure exists, namely 'Update eNB Configuration' which is used by eNB to indicate to its neighbor eNB which cells it serves and the configuration of cells and can be sent to remove cells from the operation, but it has the restriction that at least one cell needs to be included, ie it cannot be used 'as is' for a total shutdown; To allow shutdown:
    [0084] The X2AP eNB Configuration Update procedure is modified to include the possibility of indicating that zero cells are operational (how encoding them in the protocol can be solved in many different ways).
    [0085] The possibility of indicating (with a value of new cause or similar) the reason for the shutdown as 'Action due to Energy Saving Purposes' is also introduced in the eNB configuration update procedure. To allow ligament:
    [0086] A new 'activation call' message is introduced in the X2AP protocol, for example 'Cell Activation Request', such that the eNB controlling the cells that provide basic coverage / capacity may indicate that it needs the cell reinforcement of capacity (s) returns to operational.
    [0087] An implicit way to accomplish this without a new message would be to reuse the already defined X2AP load balancing procedures and simply on the macro side to start triggering load balancing actions towards the 'inactive' nodes / cells.
    [0088] In other words, the eNB configuration update procedure is enhanced to include an indication that a particular cell (the capacity booster cell) has been turned off or deactivated, and a new procedure / message is introduced in the X2APo protocol to indicate to a neighboring eNB the need for a particular cell (the capacity booster cell) to be activated.
    [0089] The cell configuration information corresponding to a deactivated capacity booster cell is still valid, preferably with the addition of an indication that the cell is deactivated or "inactive".
    [0090] The indication (also called a Deactivation Indication) that the cell is turned off is, for example, included in a new information entity (IE) in the eNB Configuration Update procedure. For example, such a new IE Deactivation Indication IE may be contained in the Cells IE Served To Modify existing in the eNB Configuration Update procedure. Such a new IE makes it possible to maintain or preserve cell configuration data while the cell is inactive.
    [0091] In the prior art with respect to the 3GPP standard, IE of Cells Served To Delete is the standard way to remove a cell and used to delete the cell configuration information / data. This means that in the previous 3GPP standard there is no possibility to make any activation calls since the cell has been removed. Adding a new cell, therefore, has to be done from the beginning using the Cells IE Served To Add pattern. Realization based on O & MT It is also possible to have shutdown and linking actions retransmitted via the O&M system.
    [0092] In practice, to send a shutdown indication, the eNB controlling the capacity booster cell (s):> turns off the respective cells and then the measurement reports from the UEs stop reporting the capacity booster cells ; and> communicates shutdown decision saving energy to the Network / Domain Manager, who then relays the indication to the eNB controlling the cells that provide basic coverage / capacity.
    [0093] When the eNB controlling the cell that provides basic coverage / capacity detects the criterion that the capacity expansion cells must be operational, it sends the respective request to the Network / Domain Manager, which then relays an indication to the eNB controlling the capacity booster cell (s).
    [0094] It should be noted that realization based on O&M is not limited to intra-LTE operation but could also be used between radio network elements of different radio access technologies, for example GSM, UMTS or CDMA2000. Exemplary advantages:> general availability of the service is not compromised while energy consumption in the system is reduced; > energy saving actions are self-organized, as eNBs can collect statistics while in operation and are able to react to data collected by themselves; > the method can be carried out with or without standard modifications and with or without O&M involvement, i.e. the same concept can be applied in a flexible way. > the invention provides a way to reduce energy consumption in the cellular radio communication network such as the LTE radio access network while avoiding service impacts.
    [0095] Fig. 7 is the schematic block diagram illustrating an example of a base station serving a basic cell. The base station 100 includes a radio coverage unit 110, a neighboring cell relationship unit 120, a cell configuration information unit 130, and an activation call unit 140. The radio coverage unit 110 is configured to serve a basic cell providing basic radio coverage and is connected to an antenna (s). Neighbor cell relationship unit 120 is configured to manage neighbor cell relationship (s) including the neighbor cell relationship between the base cell and an associated capacity booster cell served by another base station. The cell configuration information unit 130 is configured to receive an indication (shutdown indication) that the associated capacity booster cell is shut down via the air interface for energy saving purposes, and to maintain corresponding cell configuration information related to the capacity reinforcement cell. The activation call unit 140 is configured to send an activation call message to a base station serving the associated capacity booster cell when it is decided that the base station 100 serving the base cell requires the capacity booster cell to return to become operational.
    [0096] The base station 100 can, for example, make the decision to activate for activation of the capacity reinforcement cell based on the parameters related to the load, as previously discussed.
    [0097] The neighboring cell relationship unit 120 and the cell configuration information unit 130 are normally closely associated, and they can even be integrated as indicated by the dashed rectangle in Fig. 7. It should be understood that the information unit cell configuration data 130 stores cell configuration information related to the neighboring capacity reinforcement cell.
    [0098] Fig. 8 is the schematic block diagram illustrating an example of a base station serving a capacity reinforcement cell. The base station 200 includes a radio cover unit 210, a shutdown unit 220, a cell configuration information unit 230, and a neighbor cell interface unit 240. The radio cover unit 210 is configured to serve a capacity booster cell and is connected to an antenna (s). The shutdown unit 220 is configured to shut down a capacity booster cell via the air interface for energy saving purposes, and the cell configuration information unit 230 is configured to maintain corresponding cell configuration information from the air cell. capacity building. Shutdown unit 220 is also configured to send an indication that the capacity booster cell is shut down for energy saving purposes to another base station serving an associated base cell providing basic radio coverage. Neighbor cell relationship unit 240 is configured to manage neighbor cell relationship (s) including the neighbor cell relationship between the capacity reinforcement cell and the associated base cell.
    [0099] It should be understood that the cell configuration information unit 230 stores cell configuration information related to the capacity reinforcement cell served by the base station 200 itself. Neighbor cell relationship unit 240 normally handles configuration information from cell of the neighboring cell (s) such as the basic neighboring cell.
    [00100] Fig. 9 is a schematic block diagram illustrating another example of the base station serving a basic cell. Similar to the block diagram in Fig. 7, the base station 100 shown in Fig. 9 also includes a radio cover unit 110, a neighboring cell relationship unit 120, a cell configuration information unit 130, and an activation call unit 140.
    [00101] The neighbor cell relationship unit 120 treats the relationship (s) to neighboring cell (s) as well as the capacity reinforcement cell. In this example, the neighboring cell relationship unit 120 includes the cell configuration information unit 130, which in turn stores cell configuration information related to at least the capacity reinforcing cell. Base station 100 also includes a unit 125 for its own cells. In this unit 125, cell configuration information related to the cell (s) served by the base station including the base cell can be stored.
    [00102] In the particular example of Fig. 9, the base station operates under the X2AP protocol. In particular, the exchange of cell configuration information between different eNBs is carried out under the X2AP protocol. The base station 100 of Fig. 9 is also configured to receive the shutdown indication and to send the wake-up call message on the Radio Network Layer (RNL) in the X2AP protocol.
    [00103] Preferably, the activation call unit 140 is configured to indicate that it requires the capacity reinforcement cell (s) to be operational again via the activation call message in the X2AP protocol. The activation call message is preferably in the form of a Cell Activation Request.
    [00104] The cell configuration information unit 130 stores the indication that the capacity booster cell has been turned off for energy saving purposes, preferably together with the cell configuration information related to the capacity booster cell, indicating that the capacity booster cell is temporarily deactivated or inactive.
    [00105] For example, the cell configuration information unit 130 can be configured to receive the shutdown indication in the X2AP protocol eNB configuration update procedure. In addition, the base station can be configured to receive an indication of the reason for disconnecting as an action due to energy saving purposes in the eNB configuration update procedure.
    [00106] Fig. 10 is the schematic block diagram illustrating another example of the base station serving a capacity reinforcement cell. Similar to the block diagram in Fig. 8, the base station 200 shown in Fig. 10 also includes a radio cover unit 210, a disconnect unit 220, a cell configuration information unit unit 230, and a neighbor cell ratio unit 240.
    [00107] The base station of Fig. 10 also includes a unit 245 for own cells. In this unit 245, cell configuration information related to the cell (s) served by the base station including the capacity booster cell can be stored. In this example, unit 245 for own cells includes cell configuration information unit 230 for storing self-reinforcing cell cell configuration information. Neighbor cell relationship unit 240 treats the relationship (s) to neighboring cell (s) just like the base cell.
    [00108] The base station 200 of Fig. 10 also includes a linking unit 225 to make it possible to connect served cell (s) including the capacity reinforcement cell. The shutdown unit 220 and the switch unit 225 can be implemented in a general switch-off control unit 250, if desired.
    [00109] In the particular example of Fig. 10, the base station operates under the X2AP protocol. In particular, the exchange of cell configuration information between different eNBs is carried out under the X2AP protocol.
    [00110] Shutdown unit 220 is configured to selectively shut down the capacity booster cell via the air interface for energy saving purposes, and cell configuration information unit 230 is configured to maintain configuration information corresponding cell of the capacity booster cell also after shutdown. Preferably, the indication that the capacity booster cell has been turned off for energy saving purposes is stored together with the cell configuration information related to the capacity booster cell, indicating that the capacity booster cell is temporarily disabled or inactive.
    [00111] For example, shutdown unit 220 can be configured to make a decision to shut down the capacity booster cell based on alternating current load in the capacity booster cell.
    [00112] In this example, shutdown unit 220 is configured to send the shift indication on the Radio Network Layer (RNL) in the X2AP protocol.
    [00113] For example, shutdown unit 220 can be configured to indicate shutdown of the capacity booster cell in the X2AP protocol eNB configuration update procedure. In addition, shutdown unit 220 can be configured to indicate the reason for shutting down as a steel due to energy saving purposes in the eNB configuration update procedure.
    [00114] The linking unit 225 is preferably configured to receive the wake-up call message from the base station serving the associated base cell requesting that the capacity reinforcement cell be operational again, and to connect the capacity reinforcement cell. capacity based on the activation call message. In connection with the ligament, the cell configuration information in the cell configuration information unit 230 considering the capacity reinforcement cell is updated to indicate that the cell is no longer inactive.
    [00115] Fig. 11 is the schematic block diagram illustrating an example of an activation call unit. The exemplary activation call unit 140 shown in Fig. 11 includes an activation decision unit 142 and an activation call message generator 144. Activation decision unit 142 is preferably configured to make an activation decision for activation of the capacity reinforcement cell based on the parameters related to the load. For example, the parameters related to the load may include statistics on load in the base cell and / or load balancing actions that the base cell drives towards the capacity reinforcement cell. Once the decision to activate for activation of the capacity booster cell has been made, a corresponding activation call message is generated by the activation call message generator 144 and sent to the base station treating the capacity booster cell.
    [00116] The functions described above can be implemented in hardware using any conventional hardware technology such as Integrated Circuit (IC) technology, including the ability to use basic base station circuitry to provide radio coverage and handle cell relationships neighbors, and general base station hardware to receive and send control messages. Alternatively, at least some of the functions can be implemented in software to run on the appropriate processing hardware such as a microprocessor or digital signal processor, including the possibility to use the general processing capabilities of the base station.
    [00117] Fig. 12 is a schematic flow diagram of another example of a method for a base station serving a basic cell providing basic radio coverage. In step S31, the base station receives an indication that the capacity booster cell is turned off for energy saving purposes at the Radio Network Layer in the X2AP protocol, and the base station maintains the corresponding cell configuration information for the cell capacity building. In step S32, the base station makes a decision to activate for activation of the capacity reinforcement cell based on the parameters related to the load. In step S33, the base station sends an activation call message to the base station serving the capacity booster cell on the Radio Network Layer in the X2AP protocol when it is decided that the base station serving the base cell requires the cell capacity reinforcement is back operational.
    [00118] Fig. 13 is a schematic flow diagram of another example of the method for a base station serving a capacity reinforcement cell. In step S41, the base station makes a decision to shut down the capacity booster cell based on the load in the capacity booster cell. In step S42, the base station disconnects the capacity booster cell through the air interface for energy saving purposes, while maintaining the corresponding cell configuration information. In step S43, the base station sends an indication that the capacity booster cell is turned off for energy saving purposes to the base station serving the base cell on the Radio Network Layer in the X2AP protocol. Optionally, in step S44, the base station can subsequently receive an activation call message, requesting that the capacity booster cell be operational again, on the Radio Network Layer in the X2AP protocol and turn on the capacity booster cell based on the activation call message.
    [00119] Fig. 14 is a schematic diagram illustrating an example of a scenario with base stations serving different types of cells. In this particular example, two base stations 100-1 and 100-2 serving basic cells A1 and A2, respectively, are shown. Three base stations 200-1, 200-2 and 200-3 serving capacity reinforcement cells B1, B2 and B3, respectively, are also shown. Arrangements of different types of antenna including both omnidirectional and directional antenna configurations can be used. In the example illustrated in Fig. 14, basic cells A1 and A2 provide basic or wide coverage, and capacity reinforcement cells B1, B2 and B3 can be used for capacity improvements in smaller regions. The basic cells A1 and A2 are partially overlapping, and the capacity reinforcement cell B3 covers a smaller part of the basic cell A1 as well as a smaller part of the basic cell A2. The capacity reinforcement cell B1 covers a smaller region within the basic cell A1 and the capacity reinforcement cell B2 covers a smaller region within the basic cell A2. Of course, infinite different cell configurations are feasible within the scope of the present invention.
    [00120] The modalities described above are to be understood as a few illustrative examples of the present invention. It will be understood by those skilled in the art that various modifications, combinations and changes can be made to the modalities without departing from the scope of the present invention. In particular, different solutions in different modalities can be combined in other configurations, where technically possible. ABBREVIATIONS E-UTRAN Access Network via Universal Terrestrial Radio HCS Hierarchical Cell Structure IC LTE Integrated Circuit Long Term Evolution LTE-A LTE Advanced O&M Operation & Maintenance RAT Radio Access Technology RNL Radio Network Layer RRC Radio Resource Control SCTP Transmission Protocol and Sequence Control TNL Transport Network Layer EU User Equipment UMTS Universal Mobile Terminal Telecommunications System WCDMA Multiple Access by Broadband Code Division X2AP Application Protocol X2 3GPP Third Generation Partnership Project REFERENCES [1] TS 36.423 from 3GPP [2] TS 36.300 from 3GPP
    权利要求:
    Claims (15)
    [0001]
    1. Method for adding and / or removing a cell from operation in a heterogeneous radio network having at least two different types of cells, including a first type of basic cell to provide basic radio coverage and a second type of cell associated with a basic cell as a capacity increase cell, characterized by the fact that it comprises the steps of: selectively turning on and off (S1) the capacity increasing cell; when the capacity increase cell is turned off, the cell does not exist through the air interface while cell configuration information is maintained and when the capacity increase cell is turned on, cell definition information is retransmitted and the cell becomes available again through the air interface; and - communicate (S2), on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP), a shutdown indication and an activation call message for linking the capacity increase cell between a base station (200 ; eNB) serving the capacity increase cell and the base station (100; eNB) serving the basic cell.
    [0002]
    2. Method for operating a base station (100; eNB) serving a base cell providing basic radio coverage, said base cell having a neighboring cell relationship to an associated capacity increase cell served by another base station (200; eNB), characterized by the fact that it comprises the steps of: the base station (100; eNB) serving the basic cell to receive (S11; S31) an indication, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP) , that the associated capacity increase cell is turned off via the air interface for energy saving purposes, and maintaining corresponding cell configuration information; the base station (100; eNB) serving the base cell to send (S12; S33) an activation call message, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP) to the base station (200; eNB ) serving the associated capacity increase cell when it is decided that the base station (100; eNB) serving the base cell requires the capacity increase cell to be operational again.
    [0003]
    3. Method according to claim 2, characterized by the fact that the base station (100; eNB) serving the base cell indicates that it requires the capacity increase cell (s) to return (in) to stay operational (s) via the aforementioned activation call message in the X2AP protocol, where the aforementioned activation call message is a Cell Activation Request.
    [0004]
    4. Method according to claim 2, characterized by the fact that the aforementioned indication is received in the eNB Configuration Update procedure of the X2AP protocol.
    [0005]
    5. Method according to claim 4, characterized by the fact that the reason for shutdown as an action due to energy saving purposes is indicated in the eNB Configuration Update procedure.
    [0006]
    6. Method according to claim 2, characterized by the fact that the base station (100; eNB) serving the base cell is making (S32) an activation decision to activate the capacity increase cell based on the parameters related to the basic cell load such that the decision to turn on the capacity increase cell is induced by the neighbor, where the aforementioned decision to activate for capacity increase cell activation is based on the statistics on the load in a basic cell and / or in the load balancing actions that the basic cell drives towards the capacity increase cell.
    [0007]
    7. Method according to claim 2, characterized by the fact that the basic cell and the capacity increase cell represent different types of cells in a heterogeneous radio network, in which the heterogeneous radio network has a Hierarchical Cell Structure (HCS), and the base cell is a cell in a lower HCS layer and the capacity increase cell is a cell in a higher HCS layer.
    [0008]
    8. Method according to claim 2, characterized by the fact that the base station (100; eNB) serving the base cell and the base station (200; eNB) serving the associated capacity increase cell are radio network elements different radio access technologies.
    [0009]
    9. Base station (100; eNB), adapted to carry out the method as defined in any of claims 2 to 8, having means (110) to serve a basic cell providing basic radio coverage, and means (120) to manage a neighboring cell relationship between a base cell and an associated capacity increase cell served by another base station (200; eNB), said base station (100) characterized by the fact that it comprises: means (130) for receiving an indication, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP), that the associated capacity increase cell is turned off via the air interface for energy saving purposes, and maintaining corresponding cell configuration information; means (140) to send (S12; S33) an activation call message, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP) to the base station (200; eNB) serving the associated capacity when it is decided that the base station (100; eNB) serving the base cell requires the capacity increase cell to be operational again.
    [0010]
    10. Method for operating a base station (200; eNB) serving a capacity increase cell, the mentioned capacity increase cell having a neighboring cell relationship to an associated basic cell, providing basic radio coverage, served by another base station (100; eNB), characterized by the fact that it comprises the steps of: the base station (200; eNB) serving the capacity increase cell turn off (S21; S42) the capacity increase cell through the air interface with the purpose of energy saving, maintaining cell configuration information; and the base station (200; eNB) serving the capacity increase cell send (S22; S43), on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP), an indication that the capacity increase cell it is turned off for energy saving purposes for the base station (100; eNB) serving the base cell; the base station (200; eNB) serving the capacity increase cell to receive (S44) an activation call message, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP), from the base station ( 100; eNB) serving the base cell requesting the capacity increase cell that resumes operation and turning on the capacity increase cell based on the activation call message.
    [0011]
    11. Method according to claim 10, characterized by the fact that the capacity increase cell shutdown is indicated in the X2AP protocol eNB Configuration Update procedure.
    [0012]
    12. Method according to claim 11, characterized by the fact that the reason for shutdown as a due action for energy saving purposes is indicated in the eNB Configuration Update procedure.
    [0013]
    13. Method according to claim 10, characterized by the fact that the aforementioned step of shutting down (S21; S42) the cell is self-activated, and the base station (200; eNB) serving the capacity increase cell takes (S41) the decision to shut down the capacity increase cell based on the load in the capacity increase cell.
    [0014]
    14. Method according to claim 10, characterized by the fact that the base cell and the capacity increase cell represent different types of cells in a heterogeneous radio network, in which the heterogeneous radio network has a Hierarchical Cell Structure (HCS), and the base cell is a cell in a lower HCS layer and the capacity increase cell is a cell in a higher HCS layer.
    [0015]
    15. Base station (200; eNB), adapted to carry out the method as defined in any of claims 10 to 14, having means (210) to serve a capacity increase cell, and means (240) to manage a cell relationship neighbor between said capacity increase cell and an associated basic cell, providing basic radio coverage, served by another base station (eNB), the base station (200, eNB) characterized by the fact that it comprises: means (220) for disconnect the capacity increase cell via the air interface for the purpose of energy saving and to send, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP), an indication that the capacity increase cell is turned off for energy saving purposes for the base station (eNB) serving the base cell; means (230) for maintaining corresponding cell configuration information from the capacity increase cell; means (225) for receiving a callback message activation o, on the Radio Network Layer (RNL) in Application Protocol X2 (X2AP), from the base station (100; eNB) serving the base cell by requesting the capacity increase cell that becomes operational again, and to turn on the capacity increase cell based on the activation call message.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012003288B1|2021-02-02|method for adding and / or removing a cell from operation on a heterogeneous radio network, method for operating a base station, and, base station
    CN102378323B|2014-12-10|Energy-saving compensation method and base station
    FI105993B|2000-10-31|Procedures and systems for controlling radio communication systems and radio network controllers
    JP6102940B2|2017-03-29|Mobile communication system, base station, communication method and program
    CN102137400B|2015-04-01|Safety treatment method and system when re-establishing RRC | connection
    JP5378629B2|2013-12-25|Method and apparatus for performing relay node configuration and reconfiguration in a relay expansion network
    CN102349323A|2012-02-08|Wireless communication system, method, wireless base station, and control station
    CN101932015B|2014-03-19|Handoff parameter adjusting method and device
    US20130070663A1|2013-03-21|Method and Arrangement in a Telecommunication System
    EP2708071A1|2014-03-19|Saving energy in muliti - rat communication network
    WO2010105409A1|2010-09-23|Automatic neighbor relation measurement reporting method, device and system
    WO2014176978A1|2014-11-06|Method for realizing awakening of small cell, access network element device and computer storage medium
    CN108353465A|2018-07-31|Interface setting between cellular communication system and WLAN
    US20150304931A1|2015-10-22|Method of automatically adjusting mobility parameter
    WO2012155595A1|2012-11-22|Method, base station and terminal for recovering radio resource control connection
    US20170318503A1|2017-11-02|Handover of a terminal in dual connectivity mode
    KR101653078B1|2016-08-31|Communication system
    US9198143B2|2015-11-24|Method and apparatus for improved management of service-impacting events
    JP6332633B2|2018-05-30|Wireless communication system, wireless station, network operation management apparatus, and network restoration method
    US20110319082A1|2011-12-29|Method, apparatus and computer program product for source identification for single radio voice call continuity
    WO2011038611A1|2011-04-07|Method, device and system for maintaining neighbor cell information
    JP6299590B2|2018-03-28|COMMUNICATION SYSTEM, ACCESS CONTROL DEVICE, ACCESS DEVICE, AND COMMUNICATION PATH CONTROL METHOD USED FOR THEM
    CN102811433B|2015-08-12|The management method of contracted user
    同族专利:
    公开号 | 公开日
    US20150078235A1|2015-03-19|
    IL217776D0|2012-03-29|
    IL217776A|2015-11-30|
    BR112012003288A2|2016-03-01|
    US11218960B2|2022-01-04|
    JP5758387B2|2015-08-05|
    DK2468027T3|2013-10-21|
    EP2468027B1|2013-07-10|
    JP2015133718A|2015-07-23|
    PL2468027T3|2013-12-31|
    CN102656915A|2012-09-05|
    JP2013502820A|2013-01-24|
    US20150071154A1|2015-03-12|
    ES2428011T3|2013-11-05|
    WO2011021975A1|2011-02-24|
    US20110044284A1|2011-02-24|
    US20150078236A1|2015-03-19|
    EP2468027A1|2012-06-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5164938A|1991-03-28|1992-11-17|Sprint International Communications Corp.|Bandwidth seizing in integrated services networks|
    JP3176548B2|1996-01-26|2001-06-18|富士通株式会社|Line interface device in ATM exchange|
    GB2316578B|1996-08-24|2001-01-24|Motorola Ltd|Control system for cellular network|
    US6405048B1|1996-08-28|2002-06-11|Telefonaktiebolaget L M Ericsson|Method and system for autonomously allocating frequencies to a radio system sharing frequencies with an overlapping macro radio system|
    US5960353A|1996-12-24|1999-09-28|Lucent Technologies, Inc.|Microcell load measurement using feedback control|
    US20020086679A1|2000-12-29|2002-07-04|Bo Li|Method and apparatus for increasing cell use in a dedicated network|
    US7324447B1|2002-09-30|2008-01-29|Packeteer, Inc.|Methods, apparatuses and systems facilitating concurrent classification and control of tunneled and non-tunneled network traffic|
    US7127253B2|2003-02-13|2006-10-24|Asustek Computer Inc.|Penalty of cell reselection for a wireless device|
    CA2553370A1|2004-01-12|2005-07-28|Behzad Barjasteh Mohebbi|Short-range cellular booster|
    JP3795497B2|2004-03-10|2006-07-12|株式会社東芝|Dual wireless terminal device and dual wireless system|
    JP4394590B2|2005-02-22|2010-01-06|株式会社日立コミュニケーションテクノロジー|Packet relay apparatus and communication bandwidth control method|
    US7603473B2|2005-07-15|2009-10-13|Microsoft Corporation|Background network bandwidth sharing behind gateway devices|
    US8385193B2|2005-10-18|2013-02-26|Qualcomm Incorporated|Method and apparatus for admission control of data in a mesh network|
    US20070286370A1|2006-05-24|2007-12-13|Kauppinen Risto A|Apparatuses and methods for presenting caller identities for communications originating and terminating in different communication domains|
    EP2077050A4|2006-10-27|2012-10-24|Ericsson Telefon Ab L M|Method and apparatus for estimating a position of an access point in a wireless communications network|
    FR2910775B1|2006-12-22|2009-01-23|Alcatel Lucent Sa|FLEXIBLE RADIO NETWORK|
    US7969872B2|2007-07-23|2011-06-28|Mitel Networks Corporation|Distributed network management|
    WO2009017168A1|2007-07-31|2009-02-05|Ntt Docomo, Inc.|Base station device and method in mobile communication system|
    CN101822086B|2007-08-13|2014-08-20|株式会社Ntt都科摩|Mobile communication system, general base station device, base station device, and base station status control method|
    EP2056628A1|2007-10-30|2009-05-06|Nokia Siemens Networks Oy|Communication network element and method of switching activity states|
    DE102007057607A1|2007-11-28|2009-06-25|T-Mobile Internationale Ag|Method for reducing the power consumption in a mobile radio network with at least two supply levels|
    JP5543073B2|2008-01-30|2014-07-09|京セラ株式会社|Base station for mobile communication system|
    GB2458258A|2008-02-04|2009-09-16|Nec Corp|Method of controlling base station loading in a mobile communication system|
    JP2009284297A|2008-05-23|2009-12-03|Nec Access Technica Ltd|Multi-session enabled router and communication control method thereof|
    US8023444B2|2008-07-03|2011-09-20|Cisco Technology, Inc.|Multiple density configurations and algorithms for intelligent power savings infrastructure in wireless LANs|
    US20100008293A1|2008-07-09|2010-01-14|Qualcomm Incorporated|X2 interfaces for access point base stations in self-organizing networks |
    US20100056184A1|2008-08-26|2010-03-04|Motorola, Inc.|Presence-aware cellular communication system and method|
    JP5212479B2|2008-11-20|2013-06-19|富士通株式会社|Wireless base station, wireless terminal, and specific information distribution method|
    EP2397002B1|2009-02-16|2013-02-13|Telefonaktiebolaget LM Ericsson |Controlling cell activation in a radio communication network|
    EP2406992B1|2009-03-13|2012-12-26|Telefonaktiebolaget LM Ericsson |Managing energy consumption of base stations|
    US8228871B2|2009-03-19|2012-07-24|Telefonaktiebolaget Lm Ericsson |Wireless handover optimization|
    WO2010123417A1|2009-04-20|2010-10-28|Telefonaktiebolaget Lm Ericsson |Controlling cell activation in a radio communication network|
    WO2011000406A1|2009-06-29|2011-01-06|Nokia Siemens Networks Oy|Method and apparatus utilising protocols|
    US8160591B2|2009-08-04|2012-04-17|Motorola Mobility, Inc.|In a radio network environment, reducing interference among overlapping cells|JP4954238B2|2009-04-27|2012-06-13|株式会社エヌ・ティ・ティ・ドコモ|Mobile communication system|
    KR101676033B1|2010-01-08|2016-11-29|삼성전자주식회사|Method and apparatus for power consumption reduction of base station in wireless communication system|
    US8554224B2|2010-03-24|2013-10-08|Qualcomm Incorporated|Cellular network energy saving|
    CN107257575A|2010-04-30|2017-10-17|交互数字专利控股公司|Homenode identification, interference are reduced and energy saving|
    CN102083179B|2010-08-11|2014-04-02|电信科学技术研究院|Control processing method for energy-saving cell and base station|
    CN102378323B|2010-08-13|2014-12-10|电信科学技术研究院|Energy-saving compensation method and base station|
    US8902791B2|2010-10-01|2014-12-02|Qualcomm Incorporated|Configuration control of inter-cell signaling based on power state|
    US9031530B2|2010-11-08|2015-05-12|Qualcomm Incorporated|System and method for assisting in powering on sleeping network entities|
    CN102480757A|2010-11-26|2012-05-30|北京三星通信技术研究有限公司|Method for managing hotspot cell equipment|
    CN102695251B|2011-03-21|2016-01-20|上海贝尔股份有限公司|Power-economizing method in mobile communication system|
    WO2012146295A1|2011-04-28|2012-11-01|Fujitsu Limited|Method and apparatus for mode-switching at a base station|
    ES2404979B1|2011-04-29|2014-05-05|Telefónica, S.A.|METHOD AND SYSTEM FOR SAVING ENERGY AND MINIMIZING THE LEVEL OF INTERFERENCE IN A RADIO ACCESS NODE NETWORK DEPLOYMENT|
    CN102781076B|2011-05-13|2016-03-02|华为技术有限公司|Different system small area energy-saving control method and equipment|
    EP2701426A4|2011-05-16|2014-07-02|Huawei Tech Co Ltd|Method, system and device of energy saving for base stations|
    WO2013022505A1|2011-08-11|2013-02-14|Joey Chou|Inter-ratenergy saving management|
    KR101855523B1|2011-10-06|2018-05-04|삼성전자주식회사|Method and device of generating feedback in a communication system|
    JP5948045B2|2011-11-25|2016-07-06|株式会社Ｎｔｔドコモ|Wireless base station and wireless communication method|
    GB2497918A|2011-12-06|2013-07-03|Nec Corp|HNB and HeNB of a dual mode base station having an internalinterface coupling over which they inform each other of whether they are in a power saving mode|
    US8971226B2|2012-01-27|2015-03-03|Telefonaktiebolaget L M Ericsson |Method and apparatus for dynamic and adjustable energy savings in a communication network|
    WO2013110213A1|2012-01-27|2013-08-01|Telefonaktiebolaget L M Ericsson|Method and apparatus for dynamic and adjustable energy savings in a communication network|
    CN103249021B|2012-02-01|2016-12-14|华为技术有限公司|Base station equipment realizes the method and apparatus of multi-cell service|
    EP2627130B1|2012-02-13|2015-04-08|Alcatel Lucent|Method for automatically de-activating a cell in a cellular network|
    US8989760B2|2012-03-09|2015-03-24|Qualcomm Incorporated|Using low-power access points to identify traffic congestion zones|
    CN103313357B|2012-03-12|2016-12-07|华为技术有限公司|A kind of base station energy-saving method, system and device|
    US9294995B2|2012-03-23|2016-03-22|Nokia Solutions And Networks Oy|Activate ES cell for particular UE|
    US20130250908A1|2012-03-23|2013-09-26|Nokia Siemens Networks Oy|Base station power savings and control thereof|
    US8805384B2|2012-04-27|2014-08-12|Intel Corporation|Inter-rat coverage determination for energy saving management|
    GB2501718A|2012-05-02|2013-11-06|Fujitsu Ltd|Managing power consumption in a heterogeneous network by deactivating micro cells|
    EP2665312B1|2012-05-15|2014-06-04|Fujitsu Limited|Cell Activation and Deactivation in Heterogeneous Networks|
    CN103428680A|2012-05-24|2013-12-04|中兴通讯股份有限公司|Method and device for enabling subordination base station to provide service|
    JP5759428B2|2012-07-31|2015-08-05|日本電信電話株式会社|Wireless communication apparatus and wireless communication method|
    EP2693832B1|2012-07-31|2019-05-22|Alcatel Lucent|Notification of the break of an SCTP association between an X2 Routing Proxy and an eNB|
    US9961660B2|2012-08-08|2018-05-01|Nokia Solutions And Networks Oy|Reactivating cells to improve positioning accuracy|
    EP2883394A4|2012-08-08|2016-07-13|Nokia Solutions & Networks Oy|Interference reduction through cell activation methods in heterogeneous networks|
    US20140045509A1|2012-08-09|2014-02-13|Simon PARR|Method and apparatus in mobile telecommunications system user equipment|
    EP2892273B1|2012-08-29|2018-04-18|NEC Corporation|Communication system, base station, and communication method|
    CN104145504A|2012-09-20|2014-11-12|华为技术有限公司|Measurement control method, user equipment, control node and system|
    US9326218B2|2012-11-02|2016-04-26|Telefonaktiebolaget L M Ericsson |Base-station-to-base-station gateway and related devices, methods, and systems|
    CN104838685B|2012-12-07|2019-03-15|安华高科技股份有限公司|For operating the method and apparatus of network controlling entity|
    WO2014115261A1|2013-01-23|2014-07-31|富士通株式会社|Mobile communication system, wireless base station device, and operation control method|
    WO2014133589A1|2013-03-01|2014-09-04|Intel Corporation|Wireless local area networktraffic offloading|
    US10440590B2|2013-03-15|2019-10-08|Qualcomm Incorporated|Method and system for cloud-based management of self-organizing wireless networks|
    WO2014148801A1|2013-03-19|2014-09-25|Lg Electronics Inc.|Method and apparatus for transmitting aggregated qos information in wireless communication system|
    US9516589B2|2013-04-01|2016-12-06|New Jersey Institute Of Technology|Trading spectrum for energy savings in green cognitive cellular networks|
    WO2014161896A1|2013-04-02|2014-10-09|Nec Europe Ltd.|Method for operating a cellular radio access network and cellular radio access network|
    EP2787775A1|2013-04-02|2014-10-08|NTT Docomo, Inc.|Method and apparatus for controlling an operational state of a user plane base station, user plane base station, control plane base station, and wireless communication system|
    MY179288A|2013-05-10|2020-11-03|Ericsson Telefon Ab L M|Methods and arrangements for enabling continuation of ongoing positioning measurements at handover|
    US9713015B2|2013-05-10|2017-07-18|Lg Electronics Inc.|Method by which base station transmits signal for coverage coordination in wireless communication system and device for same|
    KR101809855B1|2013-08-02|2017-12-15|후지쯔 가부시끼가이샤|Information interaction method, base station and communication system|
    WO2015021357A1|2013-08-08|2015-02-12|Intel IP Corporation|Network management|
    JP6428620B2|2013-08-12|2018-11-28|ソニー株式会社|COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, RADIO COMMUNICATION SYSTEM, AND TERMINAL DEVICE|
    WO2015065129A1|2013-11-01|2015-05-07|Lg Electronics Inc.|Method and apparatus for performing operation related to radio link failure in a heterogeneous network|
    JP6433433B2|2013-11-27|2018-12-05|京セラ株式会社|Communication control method and base station|
    EP3070981B1|2013-12-05|2018-04-04|Huawei Technologies Co., Ltd.|Energy saving method and device for heterogeneous network|
    WO2015081531A1|2013-12-05|2015-06-11|华为技术有限公司|Energy saving method and apparatus for heterogeneous network|
    EP2941063B1|2014-04-29|2017-11-01|NTT Docomo, Inc.|Macro-Cell Assisted Small Cell Discovery and Activation|
    EP3016446A1|2014-11-03|2016-05-04|Vodafone IP Licensing limited|Method for improving energy efficiency of a telecommunication network|
    CN104333892B|2014-11-05|2018-05-01|中国联合网络通信集团有限公司|A kind of micro-base station state adjustment method and device|
    CN107113742B|2015-04-30|2020-02-21|华为技术有限公司|Interaction method and device for power information|
    US10624016B2|2015-09-23|2020-04-14|Convida Wireless, Llc|Aggregated handover in integrated small cell and WiFi networks|
    EP3482585A1|2016-07-08|2019-05-15|Nokia Solutions and Networks Oy|Energy savings in radio networks|
    CN110546973A|2017-04-20|2019-12-06|惠普发展公司，有限责任合伙企业|Data connection switching|
    CN108990073A|2017-06-02|2018-12-11|中兴通讯股份有限公司|Overlapping control method, device and the base station of wireless area|
    US10531317B1|2018-11-07|2020-01-07|Amdocs Development Limited|System, method, and computer program for performing intelligent radio access networkmanagement|
    EP3959935A1|2019-04-26|2022-03-02|Parallel Wireless, Inc.|Demand-based dynamic carrier scaling|
    CN113133094A|2020-01-15|2021-07-16|华为技术有限公司|Threshold value obtaining method and related equipment|
    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-31| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 24/02 , H04W 52/02 , H04W 16/26 , H04W 92/10 Ipc: H04W 24/02 (2009.01), H04W 52/02 (2009.01), H04W 1 |
    2019-12-31| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-10-27| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-12-22| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-02| 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 02/02/2021, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US23470409P| true| 2009-08-18|2009-08-18|
    US61/234704|2009-08-18|
    PCT/SE2010/050579|WO2011021975A1|2009-08-18|2010-05-28|Energy-saving mechanisms in a heterogeneous radio communication network|
    [返回顶部]