“Mobile cellular communication system; mobile communication network system; and mobile communication

专利摘要:
mobile cellular communication system; mobile communication network system; and mobile communication network method a mobile communication network system comprises a main network including a main device and at least one static base station; base stations and mobile stations that communicate via antennas with the base stations. base stations, including at least one moving base station that communicates via antennas with mobile stations and has a physical backhaul connection, for example ethernet to a radio manager co-located with a physical connection to a mobile station communicating via antennas with at least one selectable static base station, where each co-located individual radio manager comprises a radio resource manager and functionality for receiving information from and for sending information to other radio managers. respectively placed on the qualities of their respective return connections to the main network, the quality of their own connection back to the main network and the quality of the channel that other base stations are able to provide and that their own base station is capable of providing to mobile stations in the vicinity of the collocated individual radio, and for using the information to determine whether to reject at least one mobile station that seeks to be served by an individual base station associated with said co-located individual radio manager.
公开号:BR112012018845A2
申请号:R112012018845
申请日:2011-01-27
公开日:2019-09-17
发明作者:Giloh Benjamin
申请人:Elta Systems Ltd；
IPC主号:

专利说明:

MOBILE CELL COMMUNICATION SYSTEM; MOBILE COMMUNICATION NETWORK SYSTEM; AND MOBILE COMMUNICATION NETWORK METHOD
REFERENCE TO CQ-PENDING ORDERS
Priority is claimed from the request of Israel N-
203568, deposited on 28 January 2010 and request in Israel N ² 206455 deposited in June 17 2010.FIELD OF THE INVENTION The present invention refers to nets in mobile communications and particular to nets in
cellular communication.
BACKGROUND OF THE INVENTION
Many mobile communication networks are known, including 4G networks. Ad hoc mobile network technology (MANET) is known. E-UTRAN is a well-known standard. WiMAX and 3G network systems are known.
A well-known MANET algorithm is described in Fuad Alnajjar and Yahao Chen, SNR / RP aware Algorithm Cross Layer Design for MANET (IJWMN, Vol. 1, n ² 2, November 2009).
Disclosures of all publications and patent documents mentioned in the specification and of the publications and patent documents cited here, directly or indirectly, are hereby incorporated by reference.
SUMMARY OF THE INVENTION
Certain modalities of the present invention seek to provide an intermediate approach that can be based on the E-UTRAN standard and that implements a wireless backhaul solution through a mobile relay layer that dynamically changes its connectivity to keep synchronized with the mobile stations .
Certain embodiments of the present invention seek to
2/50 provide a cellular communication network in which there are mobile communication devices, a stationary core and typically at least one stationary base station, and at least one mobile base station. Cellular base stations extend the range of the network in such a way that the most distant mobile elements speak to the base stations, mobile and / or stationary, around them and so on, in a series of hops, back to the nucleus.
Certain modalities seek to provide cellular base stations each having a cellular telephone functionality (other than in / out, such as dialing and calling) over the same ones that you know how to inform your mobile base station in a way that base stations are seeing.
Certain modalities seek to offer a radio manager (co-located with) on a mobile station that communicates via radio with fellow radio managers on other mobile base stations.
Certain modalities seek to provide the use of the information provided by the communication network configuration above, in order to allow an individual mobile base station to determine whether or not to accept mobile communication devices that connect to it, or whether to reject them, because you know that they can do better elsewhere since the individual mobile base station is poorly connected back to the core or not connected at all, while other mobile base stations are better connected. In contrast, in conventional systems without moving base stations, the base station, being stationary, is always connected back to the core.
Certain modalities attempt to provide a system for implementing an E-UTRAN network that includes a network structure in motion, the system comprising a plurality of mobile relays (mRS), each accommodating a
3/50 typically small E-UTRAN base station (rBS), an E-UTRAN mobile station (rMS) and a local radio management unit (rRM), with a standard E-UTRAN communication layer that communicates with your co-located mobile station (rMS) and its co-located base station (rBS) in order to collect quality channel information featuring at least one and, preferably, all mobile stations connected to the co-located base station and also measurements from your own co-located mobile station. The local radio management unit typically also includes multiple in-band hops backhauling functionality, which can replace conventional proprietary decision layers generally over E-UTRAN rRMs that use channel quality information to associate mobile stations with base stations.
Certain modalities of the present invention seek to provide a tactical communication network whose infrastructure is in motion, normally it is not based on mobile ad-hoc network architecture (MANET) that presents horizontal topology, where each node serves either as a subscriber terminal or as a relay between two nodes that have no connectivity, not even over the classic cellular architecture, in which the base stations are not designed for any movement. Instead, only mobile subscribers are expected to move.
The backhauling functionality of multiple in-band hops can be operative to improve immunity due to terrain or other interference, creating new alternatives to replace routes that are discarded due to terrain or other interference caused by movement, where each new alternative route includes a section between the end user's mobile station and the mobile relay to which it is connected, and a backhaul section, including the
4/50 connections between mobile centers that are part of the route as we are. Functionality may include measuring the quality of each section and finding the route or combination of sections that provide the best quality connection to the core network.
Tactical communication networks, in which the infrastructures of the entire network are mobile, have adopted Manet technologies, due to the fact that it will facilitate data sharing and achieve greater awareness of the situation.
An ad-hoc mobile network (MANET) is an autonomous system of mobile routers connected by wireless links. Routers are free to move at random and organize themselves arbitrarily; so the topology of the wireless network can change quickly and unpredictably. Each node acts as a router, forwarding data packets to other nodes. As the nodes move, a point-to-point link may be dropped due to terrain interference
or simply because they move beyond the reach of other nodes. Therefore, the stability gives network this is continuously pointed as the we fall In and outside the mesh. Certain embodiments of the present invention adopt the
central E-UTRAN architecture, in which there are permanent base stations that are fixed at fixed locations with fixed backhaul (101). The mobile part of the infrastructure (100) contains mobile relays that act according to the roles of the E-UTRAN. Contrary to the MANET topology, where the entire network is mobile, and the connections between the mobile nodes can change quickly and unpredictably, and where the stability of the network is continually emphasized as the nodes fall in and out of the mesh, certain embodiments of the present invention are based on a centralized approach and on the assumption that the nailed part of the net (101) is stable. The relay layer
5/50 (100) is located between the side of the network on which there are standard fixed base stations, and the access side, where there are standard mobile stations (EU / MS layer). In order to communicate with standard base stations (sBS), on the one hand, and standard mobile stations (MSs) on the other side, the mobile relay layer was implemented, in this E-UTRAN network, backhauling of multiple mobile hops in band in which it acts as mobile stations in relation to static base stations (BSs) and as base stations in relation to mobile stations (MSs) as illustrated in Figure 1 and Figure 10. In this approach, the network topology remains relatively constant. Network connectivity is critical and depends on both fixed and nailed base stations and the relay layer. In this case, even if one of the relay nodes is dropped due to terrain interference, the effect is smoothed out because, unlike MANET, the network is centralized towards a main network that is located in a safe and permanent location. Even if a node goes down, traffic is backhauled through other intermediate nodes, along with static base stations in relation to the basic network.
Certain embodiments of the present invention provide management methods, which combine a centralized approach (in the central network) and a distributed approach (in the relay network) in one solution.
Management methods for standard cellular communication networks are now described. Cellular communication systems are based on base stations that are located in chosen places to provide ideal conditions for communication and network coverage. Each base station is normally located in a permanent place for a long period (month, year), and therefore the backhaul to the base station is fixed and can employ El lines, fiber or microwave links, which connect the base stations to the network. basic. In such
6/50 typical cellular networks, the mobile unit, which is the user's device, is the only mobile network element that moves from one location to another, and the network must follow the user in order to provide connectivity and telecommunications.
In such a standard cellular network, the user's desired bit rate and quality of service must be maintained, regardless of the user's mobility within the coverage area. In wireless systems, proper transfer, which is one of the fundamental RRM techniques, is critical to ensuring the desired user performance. The transfer execution is normally triggered by user feedback: the configured measurement reports and / or network events. Different types of measurements and events also give rise to several categories of transfers. It is important that the quality of the user is maintained after the transfer, to avoid the ping-pong effect, and to minimize the signaling associated with transfer procedures.
Mobile station measurements can be as follows: In E-UTRAN, the following three measurements of neighboring downlink cells are specified mainly for mobility:
- feed received from reference symbol (RSRP) quality received from reference symbol (RSRQ): RSRQ = RSRP / RSSI carrier
- E-UTRA carrier RSSI
RSRP and RSRQ measurements are performed by the mobile station (MS), which is the E-UTRA mobile terminal, for each cell with a known cell-specific pilot sequence called reference symbols. The E-UTRA RSSI carrier is measured over the entire carrier, it is the total power
7/50 received and noise from all cells (including server cells) on the same carrier, or other carriers, as defined in Advanced LTE, in which several component carriers can be used. The two measurements based on the reference symbol (RSRP and RSRQ) are preferably used for mobility decisions.
In general terms, RSRP and RSRQ can be considered as the 'signal strength' type and 'signal quality' type measurements, respectively. In WCDMA, CPICH RSCP and CPICH Ec / No are the corresponding measures of 'signal strength' and 'signal quality ·', respectively. In other words, EUTRAN RSRP and RSRQ measurements are analogous to WCDMA CPICH RSCP and CPICH Ec / No measurements, respectively. As in E-UTRAN, in WCDMA, CPICH Ec / No is the ratio between CPICH RSCP and the UTRA RSSI carrier.
The measurements of neighboring cells are typically averaged over a long period of time on the order of 200 ms or even longer to filter out the small scale fading effect. Additional network-configured time domain filtering can be used to further filter the fading effect.
There may also be a requirement on MS to measure and communicate measurements of neighboring cells (for example, RSRP and RSRQ in E-UTRAN) from a certain minimum number of cells. In E-UTRAN, this number is 8 cells (comprising one serving cell and seven neighboring cells) on the frequency of the carrier serving (or commonly referred to as intra-frequency). This number is slightly lower (for example, 4 to 6 cells) for measurements made on the frequency of the carrier that is not serving.
Reported MS mobility events are
8/50 described. Instead of asking the MS to report the quality of the entire measurement, the MS can be configured to only report events, which, in turn, are triggered by measurement reports. The events are then reported to the network. Events can be subdivided into absolute and relative events. An example of an absolute event is when the cell serving RSRP falls below an absolute threshold. Another example comprises a cell that serves RSRQ falling below an absolute Threshold.
An example of a relative event is when RSRQ a neighboring cell becomes stronger than that of the cell that serves by a certain margin (ie, Relative Threshold). The cell (s) involved in the evaluation of an event can operate on the carrier frequency of the cell it serves or can operate on different frequencies, for example, cells that serve on the frequency of the F1 carrier and neighboring cell on the frequency carrier F2. In response to the occurrence of one or more of the above events, the network may take other actions such as a transfer decision, which may require it to send a transfer command to the MS.
The measurements and events described above are used for mobility decisions. There are typically two types of mobility scenarios:
• Standby mode mobility: cell reselection.
• Mobility of connected mode: transfer.
Cell reselection is typically an autonomous function of MS, without any direct network intervention. The cell reselection decision at MS is based on downlink measurements on the target and service cells. The network can configure the MS to use RSRP and / or RSRQ and the associated absolute or relative limits for cell reselection. The configuration is carried out through the transmission of
9/50 relevant information and parameters in the transmission channel. Thus, to some extent, the MS cell reselection behavior is still controlled by the network. The standard also specifies some rules that govern the behavior of the MS when performing cell reselection.
Transfer, on the other hand, is fully controlled by the network through explicit MS specific commands and by rules standardized in the specification. The reported events are used exclusively for transfers. In addition, the actual measurement reports can also be used by the network to carry out transfers.
New commercial 4G cellular communication networks have adopted a new architecture that is based on many small Pico - Femto cells instead of macro cells. This network approach allows (with adoptive modulation code techniques) to use the spectrum in a much more efficient way and to provide broadband communication services, while overcoming aggressive urban environments. In addition, in order to reduce backhaul expenses and improve spectrum usage, in some cases, base stations are replaced with relays that use the access spectrum for backhauling traffic. In this case, one of the challenges of such a network is related to network routing and radio resource management (RRM).
In the aforementioned scenario, the base stations (or relays) and the backhaul networks are fixed and are located in permanent places that are chosen in advance, to provide optimal traffic performance, subject to the assumption that the backhaul bandwidth it is relatively stable.
Certain embodiments of the present invention say
10/50 respect to a specific scenario in which the base stations are mobile and the backhauling performances can be changed dramatically.
Certain embodiments of the present invention seek to provide an improved method for implementing a tactical wireless network in motion. Today, there are two over-the-counter approaches to implementing such a wireless network. The first is the cellular approach. This approach is similar to the current cellular network in that it encompasses base stations and mobile stations. However, legacy base stations today are not planned for any movement, only mobile subscribers are expected to move. In order to allow base stations to move, several challenges need to be addressed, such as implementing wireless backhaul, which must be able to dynamically change its connectivity, to maintain synchronization with the subscribers served, and to maintain a plan of dynamic variant frequencies to avoid interference. The other contending solution available for a wireless network on the go is the mobile ad-hoc network (MANET), which displays the horizontal topology, where each node either serves as a subscriber terminal or as a link between two nodes that do not has connectivity. This network faces significant challenges in maintaining effective routing, which must accompany fast and dynamic connectivity. They also face great difficulties in supporting multiple service networks, maintaining quality and service level. Certain embodiments of the present invention propose an average approach somewhere between both approaches. Certain embodiments of the present invention implement retransmission of multiple hops instead of MANET. The network includes a macro base station which is normally the only node that is planned to be located in a fixed position,
11/50 relays which are base stations, typically small base stations, which are powered wirelessly from a super ordered relay or from the macro base station. Each relay is capable of serving mobile stations and subordinate relays. Dynamic routing and frequency assignment problems are of a significantly smaller scale than with MANET networks due to the fact that backhaul routes and frequency assignment are restricted to relays only, while MS routing and frequency assignments they are made through a conventional transfer process. These networks can support multiple service capabilities very similar to the way 4G cellular networks do. Routing tracking is simpler also due to the fact that its topology is much less complex due to its tree resemblance rather than a mesh topology.
Certain embodiments of the present invention provide methods for managing the radio resources of a 4G LTE E-UTRAN (or WiMAX) cellular network in which part of its base stations move. As already described, and as depicted in Figure 10, typically, instead of the entire network moving (which is the MANET assumption), the methods shown and described here assume a network case in which a portion of your infrastructure it is permanent and nailed to a fixed location, while the other part of the network moves along with users' mobile stations. Certain modalities of the present invention combine a centralized management approach, which is related to a permanent part, and a distributed management approach, which is related to the mobile part of the network, in a management solution.
In such a network, the backhaul of the fixed infrastructure is stable, while the backhaul of the mobile infrastructure can be
12/50 discarded, due to terrain interference or simply because they move beyond the reach of fixed base stations.
In order to solve the problem of the E-UTRAN / WiMAX network in motion, certain embodiments of the present invention can use a band backhauling solution. In this case, each mobile base station is transformed into a mobile relay, adding a standard mobile station. Certain modalities of the present invention are related to the specific case of the network topology that is represented in Figure 1, in which the standard base station layer of the network is divided into two layers:
• A layer of static base stations - sBS (2) that are located in permanent locations and act under normal conditions and in accordance with the normal EUTRAN rules; and • Another layer of mobile base stations - rBS (63) that, with the mobile backhaul station - rMS (51), are actually mobile repeater stations (63).
To overcome the backhaul problem, changes due to the mobility of relays, certain modalities of the invention base their network management solution not on MESH or MANET topologies, but on a new approach that combines centralized and distributed radio management in a routing and radio resource management (RRM) solution. This approach is described in Figure 7. The RRM network is divided into two entities:
i • RRM centralized entity (62) that is within the
MME (or ASN GW over WiMAX network) and
Distributed Network (60) of Information Managers
Relay radio features - rRM (58), (59), (50) that are located on each relay.
DisNetRM (61) in Figure 7 is an entity that
13/50 coordinates between the central standard rRM activity and the distributed rRMs network activity. In the event that all mobile end-user stations have connectivity to the base nailed stations, DisNetRM updated distributed rRMs and network management is done centrally by the main rRM which is located in the MME (62). In the event that backhaul connections are dropped due to terrain interference or simply because they move beyond the reach of the nailed stable base stations (sBSs), the rRMs come into operation and provide backhaul connectivity, using multiple hops routes between the furniture relays.
According to certain modalities, a method is provided for the management of the radio resources of this network through the combination of measurement results of backhaul rMSs and the measurements of the end user's MS in a Quality Grade Result (QGR) according to which the Transfer cell reselection charge control is performed.
The mobile relay managers of the rRMS network can communicate with each other and establish alternative routes in case of backhaul problems. This network is illustrated in Figure 2. Mobile stations (14) can be connected directly to the central network through a fixed standard base station (10), or through a relay (11) or several relays in a multiple-hops path. Each relay functions as a standard base station (rBS) on its access side, and as a mobile station (rMS) on its backhauling side.
Certain modalities of the present invention are related to the management of radio resources of such a mobile relay network, as represented in Figure 2. The distributed management solution is based on special local managers rRM (rRM - Relay radio manager). These rRMs are connected to each other
14/50 in relation to the standard S1 / X2 LTE (or R4 WiMAX) protocols, and are responsible for the transfer, selection / reselection of the cell and control of the network load in cases where the centralized RRM is unable to control parts of the network due to degradation in the performance of the backhaul network. Each rRM is typically operative to perform at least one and, preferably, all of the following functions:
• multi-section route method to make decisions regarding cell transfer and selection, • frequency band carrier selection, • cell connectivity method.
A simplified diagram of the relay structure, according to certain modalities, is shown in Figure 7. In this solution, the internal relay base station (the rBS) and its internal mobile station (rMS) are standard. Its PHY and MAC layers are in accordance with E-UTRAN (or WiMAX), without changes.
According to certain embodiments of the invention, a feature is provided in the rRM that receives from the rMS a report such as a conventional Network Measurement Report (NMR) via the rMS Ethernet port. The NMR is normally sent only to the remote base station where the MS is stationed. In this solution, the rMS is controlled by the rRM and provides measurement information, both for the remote BS, as well as for the local rRM.
The rBS is connected to the rRM through an Ethernet port that carries standard R6 (WiMAX) or S1 / X2 (E-UTRAN) messages. The backhauling traffic of this mobile relay is carried out over the rMS, and due to the fact that the relay is mobile, there is no guarantee that the backhauling bandwidth is sufficient, or that there is a backhauling link at all. In such cases, the immunity solution is based on the numerous routes that can be established
15/50 between mobile relays. Certain embodiments of the present invention provide methods for controlling the system in such a unique case.
In standard commercial networks, where base stations and relay stations are fixed, the single network element that is mobile is the MS that performs measurements (such as RSRP, RSSI, RSRQ) to maintain quality of service. Based on these measures, the transfer and decisions to enter the network are made. In such standard networks, these MS measurements are sufficient, since the base stations are constant and the backhaul performances do not change.
In the network scenario mentioned above, in which the base stations and relays are moving, it is necessary to consider the measurement of each MS / rMS in each section / hop in the route. For example, the MS5 path in Figure 2 contains 3 sections / hops: section g (15), k (16) and d (17). The problem is that, in cases where the rRM transfer decision is based on MS5 measurements only, it cannot take rMS2 and rMS3 measurements into account; although the results of the measurements in section g (15) are of good quality, the performance of the complete route may be of poor quality, if the measurements in section k (16) show that the quality is not sufficient. In this case, a decision to transfer MS5 to this route may be incorrect.
Certain modalities of the present invention overcome these deficiencies and solve the problem identified above by providing methods that take into account the measurements of all mobile stations (MS and rMSs) along the specific route. All measurements made by all mobile phones along each specific route can be combined and a quality grade result (QGR) can be provided for each route. Transfer and network entry decisions are based on this QGR result.
16/50
In accordance with certain embodiments of the present invention, a method is provided in which the route tables are constructed, and contains the MS measurements for each section of the route. The method analyzes this table and classifies each route for varying degrees of quality of service.
The QGR of each alternative route is transferred to the MSs as well. Each MS receives the QGRs that are related to its alternative routes. This is important in the case of inactive mode, where the MS can choose the base station to camp on, without the involvement of the network. In the standard case, while the MS depends on its own measurements only, it can choose to camp on the rBS without backhaul. The QGR table prevents this from happening. If the QGR = 0 for a specific rBS (although the DM quality measurements are good), the MS can decide on camping another rBS (which has a lower measurement quality, but can still be backhauled).
Certain modalities of the present invention aim to provide partial connectivity on a mobile network, between groups of specific subscribers, while a section of the route is in an inferior condition (or can even be turned off). The method provided in accordance with certain embodiments of the present invention is intended to identify users who can be communicated with others and to provide transfer services in this portion of the network to increase connectivity. For example, in Figure 2, although section d (17) is off or has very poor quality, rRM2 (12) and rRM3 (13) maintain connectivity to their MSs and transfer decisions between rBS2 and rBS3 can be made.
According to certain embodiments of the present invention, if there is a poor quality backhauling section, the rRM is able to analyze whether the poor quality of this section is caused as a result of the transmission of its co-located rBS or neighboring rBS. In such a case, the rRM (and / or
17/50 neighbor rRM) can operate its rBS in silent mode, where the MAPs in the downlink (DL) portion of the frame may be empty and thus allow your rMS to receive the DL transmission from the remote base station (rBS or SBS). Figure 9 represents this case.
According to another embodiment of the invention, the connectivity tables and routing tables are transferred in a standard way among all the rRMs in a way that the same updated section measurement table 10 exists in each rRM (Figure 3). The same functionality exists in each rRM so that each one automatically receives the same referral result, and the one that serves the MS can perform it.
According to another embodiment of the invention, the updated measurement information can be transferred between the rRMs using the standard rRMs protocol, meaning the R4 protocol in WiMAX and the S1 / X2 protocol in LTE. In cases where one of the rRMs is disconnected from the network, there is a method to update this rRM in a specific update message.
0 Although the description of the invention given here is directed to the LTE E-UTRAN system, the invention can also be employed in 3G or WiMAX network systems as well.
There is thus provided, in accordance with certain embodiments of the present invention, a method for implementing tactical E-UTRAN network parts whose network infrastructure is in motion, together with mobile end user stations. The mobile infrastructure includes a plurality of mobile relays (mRS), each accommodating a base station 30 (rBS), typically a small base station, mobile station (rMS) and local radio management unit (rRM). The backhauling of these mobile relays is backhauling of multiple in-band hops to improve immunity. The backhauling of
18/50 multiple in-band hops allows you to create new routes that become alternatives to routes that have been abandoned due to terrain or other interference. Each route includes a plurality of sections: section between the end user's mobile station and the connected mobile relay, and backhaul sections, which are the connections between the mobile relays that are part of the route as nodes.
A network of local relay managers (rRMs) and a central manager (RRM) are also provided, in accordance with certain modalities of the present invention, which combine a central management approach and a distributed management approach in a management solution. That is, detecting the quality of each end user section and the quality of each backhauling section according to MSs and rMS measurements (RSRP, RSRI, RSRQ) and combines them in grade quality results (QGR) for the actual route and alternate routes for each end user (MS) mobile station. The results are transmitted to the end user's MSs as well, and cell transfer and admission decisions and cell reselection are made by having the result of access quality and backhaul sections for each route.
In addition, according to certain embodiments of the present invention, the QGR is created by a weighted algorithm.
Also according to certain modalities of the present invention, the centralized RRM (62) is communicated with the network of rRMs (60) through the centralized distributed manager DisNetRM (61). In the distributed rRM network, each relay manager (50) receives measurement reporting information from the other participating relay managers (58), (59) about the subnet relay manager (60) and measurement RSRP, measurements of RSRI and RSRQ from your co-located relay MS (51) and the end user MSs (55), (56), (57) to build a radio resource measurement table.
19/50
In addition, according to certain embodiments of the present invention, the measurement information is spread by type of transmission message for all rRMs and RRM.
In addition, according to certain embodiments of the present invention, the method spreads the QGR of all alternative routes to the MS over the transmission message. The transmission message from the MS refers to each base station and is sent to the MSs that camp over this base station.
Also provided, in accordance with certain embodiments of the present invention, is a method for deciding on transfer and network input on LTE / WiMAX tactical network which is based on mobile LTE relays. In this network, the routes between end-user MSs to the static base station can be established through relay backhaul Ms in several hops. The methods involve measurements (73), (74), (75) of the radio sections of each alternative path that are established by the moving relays. The method comprises all of these measurements for an entity and decides on the transfer and admission operations of the MS.
In addition, provided, in accordance with certain embodiments of the present invention, it is a method for establishing the same database for distributed network of relay radio managers (rRMs). The method exists in each rRM and is responsible for construction tables (40), (41), (42) and the section measurement table (43) in each rRM and updating this database.
In addition, provided, in accordance with certain modalities of the present invention, it is a feature for the distribution of rMS section measurements that is installed in each rMS and distributes the link quality measurements to the remote base station where it is connected to , as well as its co-located rRM. Thus, rMS can be aware of its existing backhauling quality and initiate
20/50 transfer.
However, still provided, according to certain modalities of the present invention, it is a cell reselection feature located in each MS and that periodically receives the QGR report for each path. So, while the cell phone is in idle mode and wants to camp on a new relay base station, your decision should be based not only on your own measurements, but on the rMSs backhaul measurements as well.
In addition, according to certain embodiments of the present invention, a transfer functionality is located in each rRM. In this distributed network, the local rRM is responsible for the transfer operation of its colocalized rMS.
In tables 40, 41, 42 and 43, the QGR - Quality grade result has 3 quality values: G - good, M medium, X - bad. These values are a combination of SNR and statistical metrics. The SNR is the minimum SNR that is required for the modulation constellation according to the 3GPP E-UTRAN tables.
STD weight, means and median in the QGC will be defined in field experiments.
According to certain modalities, users are shown to be in a good location or better for QGR. Statistical measurements of the co-located MS in each relay can be connected with the location results of the relay. The rRM can have a functionality that calculates and indicates to the user the locations with good or better QGC. This allows the user to locate the relay in the best backhaul location, for example, in tactical applications.
According to certain modalities, in the event that a 3 hops hop communication route is being used, the R relay that is connected to the central network via another relay
21/50
A, sends a message to backhauling relay B that - R- is anchor for A. The backhaul relay then becomes aware that another relay is connected to it and usually finds a better place to stay .
There is also provided, in accordance with certain embodiments of the present invention, a mobile communication network system comprising a base network including a core device and at least one static base station; a plurality of base stations, and a population of mobile stations that communicate via antennas with the base stations; base stations, including at least one moving base station that communicates via antennas with mobile stations and includes base station functionality, a first radio manager and mobile station functionality, all colocalized with station functionality base, the base station functionality having a physical back link to the first radio manager, the first radio manager having a physical link with the mobile station functionality, the mobile station functionality communicating through antennas with at least a static selectable base station, where the first radio manager comprises a radio resource manager and functionality for receiving information from, and sending information to, other radio managers, respectively colocalized with other mobile base stations, and for using the information to determine whether to reject at least one station not mobile seeking to be served by an individual base station associated with the colocalized individual radio manager, the information, including at least some of the information about the qualities of respective calls from other base stations to the central network, information about the quality call back from the moving base station of the first radio manager
22/50 for the basic network, and information about the qualities of the channel that the base station of the first radio manager itself, and base stations other than the base station of the first radio manager, are respectively capable of providing, for mobile stations in the vicinity of the first radio manager.
In addition, according to certain modalities of the present invention, information regarding the qualities of the respective radio manager connections respectively colocalized back to the central network is provided by the radio managers respectively colocalized through a selected one from a static base station from at least minus a static base station from the central network, and a mobile base station capable of providing service for the mobile colocalized device of the individual radio manager.
In addition, according to certain embodiments of the present invention, the information quality of its own connection back to the central network is provided by its own mobile colocalized station.
In addition, according to certain embodiments of the present invention, the channel quality information that other base stations are able to provide to mobile stations in the vicinity of the individual colocalized radio manager is provided by reports generated by the mobile stations in the neighborhood.
In addition, according to certain embodiments of the present invention, the quality of service information available from its own base station to the mobile stations in the vicinity of the individual colocalized radio manager is provided by its own colocalized mobile station.
Furthermore, according to certain modalities of this
23/50 invention, each colocalized radio manager is operative to compute, for at least one individual mobile station, route comparison information including a plurality of base station routes through which the individual mobile station can communicate with the main network and at least one parameter that characterizes the relative quality of each of the routes and to communicate the information of the individual mobile station indicative of the route comparison information and in which the individual mobile station is operative to select a base station to be connected , at least partially based on information indicative of route comparison information.
In addition, according to certain embodiments of the present invention, the parameter is based on a minimum SNR value, along sections that together form a route, each section having its own SNR value.
Furthermore, according to certain modalities of the present invention, the quality parameter characterizing the route is a combination of measured qualities of sections of the route and the fluctuations of the route in such a way that the sections with largely fluctuating quality measurements are devalued due to their unpredictability.
In addition, in accordance with certain embodiments of the present invention, at least one colocalized individual radio manager includes a feature of facilitating direct communication mobile phone to mobile phone operative to provide direct communication, not requiring the main network, among a plurality of devices in the vicinity of the individual radio manager.
In addition, according to certain modalities of the present invention, the moving base station observes a period of silence, during which it avoids transmission to
24/50 your own colocalized mobile station.
In addition, according to certain embodiments of the present invention, at least one feature of the silence period is dynamically determined by the moving base station of the colocalized radio manager.
In addition, according to certain embodiments of the present invention, the feature comprises a zone in which silence is observed which is defined by at least one of a frequency band and a time window.
In addition, according to certain embodiments of the present invention, the E-UTRA network comprises a tactical E-UTRAN network.
In addition, according to certain embodiments of the present invention, if a multiple-hops communication path is used, in which a relay R that is connected to the central network via another relay A, relay R sends a message to a relay of backhauling that R is anchor to A.
In addition, according to certain embodiments of the present invention, the static base station is colocalized with the core device.
In addition, according to certain embodiments of the present invention, the physical back link comprises an Ethernet back link.
In addition, according to certain embodiments of the present invention, the radio resource manager comprises an E-UTRAN radio resource manager.
There is also provided, according to certain embodiments of the present invention, a method of mobile communication network which comprises providing a base network including a core device and at least one static base station; a plurality of base stations, and a population of mobile stations that communicate via antennas with the base stations; base stations, including at least one moving base station that communicates
25/50 via antennas with the mobile stations and includes base station functionality, a first radio manager and mobile station functionality, all colocalized with base station functionality, the base station functionality having a physical connection back to the first radio manager, the first radio manager having a physical connection with the mobile station functionality, the mobile station functionality communicating through antennas with at least one selectable static base station, in which the first radio manager comprises a radio resource manager and functionality to receive information from, and send information to other radio managers, respectively colocalized with other mobile base stations and using the information to determine whether to reject at least one mobile station seeking to be served by a base station individual associated with the individual radio manager colocalized, information, including at least some of the information about the qualities of the respective calls back from other base stations to the central network, information about the quality of the call back from the moving base station of the first radio for the basic network, and information about the qualities of the channel that the base station of the first radio manager itself, and base stations other than the base station of the first radio manager, are respectively capable of providing, for mobile stations in the proximity to the first radio manager.
In addition, according to certain embodiments of the present invention, users are shown a good location for QGR.
In addition, according to certain modalities of the present invention, the statistical measurements of a colocalized MS in each at least one relay are linked to the
26/50 relay location results and in which the system includes, at least one rRM having a functionality that calculates and indicates to the user locations with good QGC.
In addition, according to certain modalities of the present invention, the backhauling relay becomes aware that another relay is connected to it and finds a good place to stay.
Typically, each rRM speaks to its colocalized base station according to conventional protocols, for example, as per the standard E-UTRAN communication layer. However, when an rRM speaks to its colocalized mobile station (rMS), there is generally no conventional protocol in the sense that conventionally, only base stations speak to terminal units, for example, mobile stations whereas conventional RRMs speak only to base stations . To overcome this, according to certain embodiments of the present invention, rRMs can be masked as base stations, for example by sending a request to an rMS to perform an NMR measurement.
A computer program product is also provided, which comprises a computer-usable medium or computer-readable storage medium, typically tangible, having a computer-readable program code incorporated therein, the computer-readable program code adapted to run to implement any or all of the methods shown and described here. It is appreciated that any or all of the computational steps shown and described here can be implemented on a computer. Operations in accordance with the teachings in this document can be performed by a computer specially built for the desired purposes, or by a general purpose computer specially configured for the desired purpose by a stored computer program.
27/50 on a computer-readable storage medium.
Any suitable processor, display screen and input means can be used to process, for example, display on a computer display screen or other computer output device, store, and accept information, such as information used by, or generated by any of the methods and apparatus shown and described here; the above processor, display screen and input means, including computer programs, in accordance with some or all of the modalities of the present invention. Any or all of the features of the invention shown and described here can be accomplished by a conventional personal computer processor, workstation or other programmable device or computer or electronic computing device, whether for general or specifically constructed purposes, used for processing; a computer and / printer or or and / or speaker display screen for display; machine-readable memory, such as optical discs, CDROMs, magnetic-optical discs or other discs; RAMs, ROMs, EPROMs, EEPROMs, magnetic or optical cards or others, to store and keyboard or mouse to accept. The term process as used above is intended to include any type of computation or manipulation or transformation of data represented as physical, for example, electronic phenomena, which may occur or reside, for example, within a computer's registers and / or memories.
The above devices can communicate through any conventional digital means of communication, wired or wireless, for example, through a wired or cellular telephone network, or a computer network, such as the Internet.
The apparatus of the present invention may include, according to certain embodiments of the invention, the memory of
28/50 optical reading, which contain or otherwise store an instruction program that, when executed by the machine, implements some or all of the apparatus, the methods, characteristics and functionalities of the invention shown and described here. Alternatively or in addition, the apparatus of the present invention may include, according to certain embodiments of the invention, a program as above that can be written in any conventional programming language and, optionally, a machine for executing the program such as, but it is not limited to a general purpose computer, which can optionally be configured or activated in accordance with the teachings of the present invention. Any of the teachings incorporated herein may, whenever appropriate, operate on signals representative of physical objects or substances.
The above mentioned modalities, and other modalities, are described in detail in the following section.
Any trademark occurring in the text or drawings is the property of its owner and occurs here only to explain or illustrate an example of how a modality of the invention can be implemented.
Unless otherwise specified, as apparent from the following discussions, it is considered that throughout the discussions of the specification, the use of terms such as processing, computing, estimating, selecting, graduating, classifying, calculating, determining, generating, reassessing, classify, generate, produce, stereo match, record, detect, associate, superimpose, obtain or something similar, see the action and / or processes of a computer or computing system, or similar electronic computing processor or device, which manipulate and / or transform the data represented as physical, such as electronic quantities
29/50 within the registers and / or memories of the computing system, in other data equally represented as physical quantities in the memory or registers of the computing system, or any other transport information, storage or display devices. The term computer should be widely interpreted to cover any type of electronic data device with processing capabilities, including, by way of non-limiting example, personal computers, servers, computing systems, communication devices, processors (for example , digital signal processor (DSP), microcontrollers, field programmable gate arrangement - Field Programmable Gate Array (FPGA), application specific integrated circuit (ASIC), etc.) and other electronic computing devices.
The present invention can be described, for clarity only, in terms of specific terminology for programming languages, operating systems, browsers, system versions, individual products, and the like. It will be appreciated that this terminology is intended to convey general principles of operation clearly and briefly, by way of example, and is not intended to limit the scope of the invention to any particular programming language, the operating system, browser, system version, or individual product.
BRIEF DESCRIPTION OF THE DRAWINGS
Certain embodiments of the present invention are illustrated in the following drawings:
Figure 1 is a simplified pictorial diagram of an LTE / WiMAX network using cellular base stations.
Figure 2 is a simplified pictorial diagram of a mobile multi-cell relay network in which the base stations are mobile.
30/50
Figure 3 is a simplified pictorial diagram of an rRMs communication network.
Figure 4 is a tabular diagram of a database and a method of constructing the frames constructed and operative in accordance with certain embodiments of the present invention.
Figure 5 is a simplified diagram showing how the Section Measurement Table provides input for the transfer algorithm, in accordance with certain embodiments of the present invention.
Figure 6 is an illustration of the simplified flowchart of a cellular communication management functionality built and operated in accordance with certain embodiments of the present invention.
Figure 7 is a simplified semipictorial semiblock diagram illustration of a centralized and distributed management scheme and associated rRM network, all built and operating in accordance with certain embodiments of the present invention.
Figure 8 is a simplified pictorial diagram of measurement aggregation on each line, according to certain embodiments of the present invention.
Figure 9 is a simplified block of a semipictorial diagram of the rBS silence mode, operating according to certain modalities of the present invention in which a moving base station observes a period of silence, during which it avoids transmitting to its own station mobile co-located, for example, in such a way that at least one feature of the silence period, such as an area in which silence is observed which is defined by at least one of a frequency band and a time window, is dynamically determined by the moving base station of the colocalized radio manager.
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Figure 10 is a simplified block diagram illustration of a multi-hops E-UTRAN relay network constructed and operative in accordance with certain embodiments of the present invention.
Figure 11 is an illustration of the simplified flowchart of a method, working in accordance with certain modalities of the present invention, for the construction of tables, such as a basic measurement table; connectivity table: routing table; Measurement table of sections that are useful according to certain embodiments of the present invention.
Figure 12 is a graph of the SNR vs time spent in understanding certain embodiments of the present invention.
Figure 13 is a pictorial illustration of an example of a rescue operation in which several mobile stations and mobile base stations, serving medical personnel, are advancing on terrain where they may never have been deployed, for example, towards an area disaster.
Figure 14 is a diagram showing the use of the information presented, according to certain modalities of the present invention, to deal with the advance shown in Figure 13.
DETAILED DESCRIPTION OF CERTAIN MODALITIES
The following terms can be interpreted, either according to any definition of them appearing in the literature of the prior art, or according to the specification, or as follows:
lx RTT Radio Transmission Technology
CDMA2000 lx
CPICH Common Pilot Channel
E-UTRA UTRA Evolvida
E-UTRAN UTRAN Evolvida
FDD Frequency Division Duplexing
32/50
GSM Global System for Mobile Communication HRPD High Rate Packet Data CDMA2000P-CCPCH Physical Common Primary Control Channel RSCP Received Signal Code Power RSRP Received Signal Power ReferenceRSRQ Quality Received from the Signal ReferenceRSSI Received Signal strength indicator TDD Time Division Duplexing UTRA Universal Terrestrial Radio Access UTRAN Terrestrial Radio Access Network UniversalmRS Mobile Relay rBS Relay Base Station rMS Mobile Relay Station QGR Result of Quality Grade MANET Ad-Hoc Mobile Network MME Mobile Management Entity S-GW Service Gateway MS Mobile Station. In existing cellular networks, transferring and
network input decisions are made according to the quality of the radio channel between mobile stations (MS) and neighboring base stations. The quality of the radio channel is determined by measurements that are made by MS. Due to the fact that the base stations are located in permanent locations, the backhauling is considered stable and there is no need to carry out any backhaul measurements for the transfer process. Figure 1 describes the case for such a commercial network. The LTE and WiMAX standards have found no reason to take measurements and backhaul to link between the
33/50 network backhaul performance and measurement results of the mobile station.
In a network whose base stations are mobile (as in a tactical military cellular communication network), the performance of the network can change dramatically, because there is no guarantee that backhaul performances can be maintained in the new locations. Certain embodiments of the present invention concern a relay-based network architecture that establishes multiple hops routes via in-band backhauling. In this solution, each relay has a standard mobile station (rMS), which carries backhauling traffic. The rMS, however, does not usually have a keyboard or display screen, and usually includes only the LTE (or WiMAX) modem.
This rMS is connected to the base station (rBS) of another relay, which has its own rMs that are connected to another rBS of another relay. The messages that establish these connections are in accordance with E-UTRAN (or WiMAX) standards. Such a route contains several sections. The quality of each radio section is measured by the rMS of this section and the quality of the entire route is a consequence of the results of measuring the quality of all sections of each route, as shown in Figure 8. Figure 2 represents a network with 3 relays (11), (12), (13). Each relay functions as a base station (rBS) on its access side and a mobile station (rMS) on its backhaul side. The rBS and rMS of each relay are controlled internally by rRM - the radio relay manager. In the event that the rBS transmission interferes with attempts by the colocalized rMS to connect to the remote base station, the rRM can cause the rBS to transmit empty frames on the downlink.
According to one embodiment of the invention, RRM decisions - radio resource management, including, but not limited to, transfer or
34/50 admission decisions approximately which base station the mobile station will be connected to, or the MS network entry decisions, are based on the quality of measurements from all sections that make up a route.
Each MS can have multiple paths to a static base station. Returning first to Figure 2 it can be seen that MS5 (18) can be connected to the sBS on the following routes:
I. Through of rBSl: This route contains sections: (36), (29). II. Through of rBS2: This route contains sections: (37), (38), (39). At the example Following, the assumption is that MS5 only can
measuring the reference signals of rBSl (36) and rBS2 (37). MS5 does not have any information about the quality of the sections (29), (38), (39) that are measured by rMSl and rMS2, rMS3. Preferably, each relay's rRM collects measurement information, relays it to the other rRMs on the network and creates a Quality Grade Result (QGR) for each route according to this information. This QGR is transferred to the appropriate MS, which is MS5. The rRM decides on transfer of operation according to the QGR, and in idle mode, the MS can decide which base station to connect to.
In order to form a QGR for each possible route, a section measurement table (43) is generated, for example, as described in Figure 4. According to certain modalities of the present invention, the method is based on each table of rRM as described herein with reference to Figure 4.
All the work of rRMs on the same tables and database mentioned above and the transfer of decision and admission methods can be the same in all rRMs. Therefore, all rRMs obtain the same RRM transfer decision and the rRM responsible for making this
35/50 process is the one that encamp MS.
Each rRM bases its communication with the colocated rMS on the messages that are defined by the standard, and, in addition, the specific messages. In this way, you can control the local rMS and may require connection measurements to be made.
Each rRM communicates with the other rRMs through specific rRM messages over LTE - SI or WiMAX - R4 protocols, as shown in Figure 3. For this modality, rRM extracts the measurement report from its rMS and is responsible for transferring this measurement via a measurement report message specific to other rRMs.
Each rRM typically builds, for example, as shown in Figure 11, some or all of the following tables:
The. Basic measurement table: contains the measurements and quality results of each end-user MS for all base stations that each MS has found. These raw material data are updated periodically. Figure 4 describes this table (40) for example, according to the scenario in Figure 2.
B. Connectivity table: for example, as shown in Figure 4 (41). It provides information about which BS each mobile station is connected to.
ç. Routing table: for example, as represented in Figure 4 (42), it describes the actual routes and the sections that are related to this route.
d. Sections measurement table (STB): for example, as represented in Figure 4 (43), it is relevant because the routing decisions are made according to its parameters. It describes the measures that relate to each leg of the actual connection route and a description of routes
36/50 alternatives too. This table is the entry for the transfer decision making the process, as illustrated in Figure 5.
left side of Figure 4 describes the measurement results of the scenario in Figure 2. The basic measurement table (40) describes the quality result (QGR) for each base station that is discovered by MS. The QGR is based on
RSRI, in measurements in RSRP and us RSRQ results for each BS. RSRQ = N (RSRP / RSSI ) (dB), where N = number of blocks in resources. The table in connectivity (41) provides information about The decision c ie each MS to which base station is
connected. In the initialization phase, the right side of Figure 4 describes what the rRM sees. It can be seen in table (42) that the rRM of each relay has the quality results of each section in each real route of each MS.
The Section Measurement Table (SMT) provides quality results for all possible routes from each mobile station. In Figure 5, the table describes all possible routes for MS5 according to the scenario in the figure. 2. The section measurement table is a database used by rRM and MS to decide on the transfer and to decide which base station to connect to.
Each rRM has a list of MSs that encamp over it and, therefore, has the ability to establish communication between them. For example, mRS2 (12) in Figure 2 can establish complete communication traffic between MS5, MS6 and MS7. In addition, each rRM knows the connection of its local rMS and, consequently, it can establish a communication between the MSs that encamp it and the MSs of the relay to which its rMS is connected. For example, if in Figure 2, the link g between mRS 3 and sBS is disconnected or of poor quality,
37/50 rRM2 can also establish communication between MS5 - MS10.
The rRM typically includes multiple layers, as shown in Figure 9. Typically, radio administration is typically performed at the radio management layer (90) while the ability to establish a connection between end users' mobile phones (MSs) is performed by the rRM service layer (91). The rRM application layer (92) is above the service layer and offers radio management applications specific to the tactical network.
In tactical networks, it turns out that the quality of the backhaul section, due to mobility, can change dramatically while the relay is moving from one location to another. The rRM application layer ties the relay connectivity (QGR) to the actual location point at which it was measured. This allows a person carrying and using the relay to have an indication of location points that have good QGR.
In a 3 hops situation, in which a mobile relay is connected to the static base station (sBS), through another relay, the application layer of the first mobile relay (12) can send a message to the other relay (13) to find a better place to backhaul and you can stay there.
method for transferring or entering the network can be carried out by the network or the mobile station (MS). In cases where decisions regarding network transfer and assignment are made by the MS, the Section Measurement Table (STB) in Figure 5 is transferred through the application layer to the relevant MS. A transfer decision making the method provided in accordance with certain embodiments of the invention is now described. The method generally provides Quality Grade Result (QGR) for each possible route. Mobile stations (MS) can be connected directly to the main / fixed BS, or via one or two
38/50 relays in one or two hops. For example, MS1 in Figure 2, is connected directly to the main sBS, while MS2 is connected via mobile relay 1 (mRSl) and MS5 is connected via mRS2 and mRS3. In such a case, to ensure connectivity and maintain the quality of service and the bit rate desired by the user, it is important that the transfer decision and other rRM operations may not depend only on MS RSRP, RSSI and RSRQ measurements of the end user only, but also of the measurements made by the rMSs belonging to this link. The method by which the rRM makes a decision for a transfer operation can be based on the measurements of the MS and the measurements of the rMSs that are part of this specific backhauling link. For example, MS4 in the Measurement Table of the section in Figure 5 can be connected via sBS or RBS1 or RBS2. On each of these 3 routes, measurements from each sector (meaning measurements from MS4, rMS2 and rMS3) are taken into account.
From a mobile station point of view, there are several use cases that are related to connectivity:
• The MS does not see any of the base stations.
• The MS sees a base station that is a BS relay (rBS).
• MS sees a base station that is a standard BS (sBS).
• MS sees several base stations that can be a combination of rBS and sBS.
In each of these cases, there are several levels of quality degrees (QGR), which are related to each base station reception. The presumption at this stage is that they are good, medium or poor.
• Good quality means that RSRQ> Threshold 1 that allows the transfer of up to 64QAM • Medium quality means that RSRQ> Threshold 2 that
39/50 allows transfer of up to 16QAM • Poor quality means that RSRQ is <Threshold 3 where the connection could not be established at the minimum required quality.
Each mobile station (MS) or MS relay (rMS) sees only one layer of the base stations and its measurements refer only to that layer. In order to obtain a certain transfer or network input decision, the algorithm preferably refers to the measurements of all layers.
The MS criteria for base station selection are made according to MS measurements, as defined in the LTE standard (TS 36.304). The S cell selection criterion is satisfied when:
Srxlev> 0
Where:
Sfxlev
Qtxlevmcas (Qrxlevnun Qrxlevntinofiset) ^ Compensation [dB] Compensation ~ ^ ^max (^ ^ Umax EMAX 'θ)]
Where
Qrxlevmeas is the received level value measured for this cell, that is, the power received from the reference signal (RSRP) as defined in the standard. This measured value is the linear average over the power of the resource elements that carry the signal specific cell reference on the measurement bandwidth considered. Therefore, it depends on the configured signal bandwidth. In the case of Receiver diversity configured for MS, the reported value can be equivalent to the linear average of the Power values of all branches of diversity.
Qrxlevmin is the appropriate minimum reception level in this cell, given in dBm. This value is marked as Q
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RxLevMin by upper layers, as part of the block type of information system 1 (SIB Type 1). The Qrxlevmin calculation is based on the value provided within the information element (-70 and -22) multiplied with a factor of 2 in dBm.
Qrxlevminoffset is an offset to Qrxlevmin that is only taken into account as a result of a continuous search for a higher PLMN priority, while camped normally in a Visitor PLMN (VPLMN). This shift is based on the information element provided within Type SIB 1, having integer values between (1 ... 8) also multiplied by a factor of 2 in dB. This gives a wider range, maintaining the number of bits that transmit this information. The offset is defined to avoid ping-pong between different PLMNs. If it is not available, then Qrxlevminoffset is assumed to be 0 dB.
PCompensation is a maximum function, as shown in Equation 5. Whatever the parameter is highest, PEMAX-PUMAX or 0, is the value used for PCompensation. PEMAX [dBm] is the maximum power that an MS is allowed to use in this cell, while PUMAX [dBm] is the maximum transmission power of an MS according to the power class to which the EU belongs. Only one power class is defined for LTE, which corresponds to power class 3, in WCDMA which specifies +23 dBm. PEMAX is defined by upper layers and corresponds to the P-MAX parameter defined in the standard. Based on this relationship, PEMÁX can assume values between -30 to +33 dBm. Only when PEMAX> +23 dBm.
PCompensation is considered in the Srxlev calculation. The P-MAX (IE) information element is part of SIB Type 1, as well as in IE RadioResourceConfigCommon, which is part of Type SIB 2.
As explained above, all parameters, except for Qrxlevmeas are provided through information from the
41/50 system. In a real network, an MS can receive several cells, perhaps, from different network operators. MS only knows after reading the type of SIB 1 if this cell belongs to the network of its operator (PLMN5 of Identity). First, the EU can search for the strongest cell by carrier, then for the PLMN identity by decoding the Type 1 SIB to decide if this PLMN is a suitable identity. Following this, it calculates the S criterion and decides whether it is a suitable cell or not.
The transfer decision by end user MS can be made according to the degree of quality of each real route compared to the alternative route of the present end user (MS), and can include some or all of the following steps, properly ordered, for example, as shown:
The. if the MS has a single route, it can be considered as a high risk MS and continues to be linked to this route;
B. in cases where there are several alternatives, each part of the route is marked separately. QGR is checked and if there is a very poor QGR result, the route can be ignored and considered as a route with no backhaul;
ç. in cases where what exist several ways on what all sections They are above of Threshold in Minimum QGR, Is made a comparison in between they. THE section in Minimum QGR in each
route is taken and compared with the minimum QGR of each alternative route;
d. Transfer decision occurs if the existing route has a lower quality level than other routes.
Figure 6 represents a flow diagram of a transfer method according to certain embodiments of the present invention.
As previously described, each relay typically has a standard mobile station (rMS), which carries traffic
42/50 backhauling, however rMS typically does not include a keyboard or display screen, but only an LTE (or WiMAX) modem. This rMS is connected to the base station (rBS) of another relay, which has its own rMS that is connected to another rBS of another relay. In the event that the rBS transmission interferes with the ability of the colocalized rMS to be connected to the remote base station, the rRM can cause the rBS to transmit empty frames on the downlink.
As described above, each rRM typically builds some or all of the following tables: basic measurement table; Connectivity table: routing table; Sections measurement table. A suitable method for building these tables is shown in Figure 11. The section measurement table can be used as a database by rRM and MS to decide on transfer and the base station to which it will be connected.
As described above, each rRM has a list of MSs that encamp on it and, therefore, has the ability to establish communication between them. For example, mRS2 (12) in Figure 2 can establish complete communication traffic between MS5, MS6 and MS7. In addition, each rRM knows the connection of its local rMS and, consequently, it can establish a communication between the MSs that camp in it and the relay MSs in which its rMS are connected. For example, if in Figure 2 section d (17) between mRS 3 and sBS is off or in low quality, rRM2 can still establish communication between MS5 - MS10. The rRM has several layers, for example, as shown in Figure 9. Normally, while radio management is done in the radio management layer (90), the ability to establish the connection between mobile end user phones (MSs) is performed by the rRM service layer (91). The rRM application layer (92) is above the service layer and offers
43/50 radio management specific to the tactical network.
In tactical networks, it can happen that the quality of the backhauling section, due to mobility, can be changed dramatically, while the relay moves from one place to another. The MRA application layer ties the relay connectivity (QGR) to the actual location point that was measured. This allows people to perform and use the indication relay on the location points that have good QGR.
In the case of 3 hops meaning a mobile relay that is connected to the static base station (sBS), through another relay, the application layer of the first mobile relay (12) can send a message to the other relay (13) to find the best place to backhaul and stay there.
As described above, a decision-making method is provided here that provides a Quality Grade Result (QGR) for each possible route. Usually in MANET - Mobile Ad-Hoc Networks - algorithms are based on counting hops (like DSR), but these algorithms do not ignore the quality of weak connections. According to certain embodiments of the present invention, the method can be based on an appropriate modification, as described below, of the following algorithm: Fuad Alnajjar and Yahao Chen, SNR / RP Aware Routing Algorithm Cross - Layer Design for MANET (IJWMN, Vol 1, No. 2, November 2 0 09), which is based on SNR and power measurements. The Alnajjar-Chen method is typically modified in some or all of the following aspects:
1) the report generated may merely include the conventional contents of an E-UTRAN measurement report from mobile stations (NMR). There is no route request message and Replay message;
2) route quality calculation is not done at the node
44/50 of origin - the mobile station, but at the intermediate node - the rRM relay;
3) in addition to the RSSI, RSRP metrics (such as the SNR and the power in the Alnajjar article) there are STD statistics, the average / average and median metrics and weight the results of each section (for example, as described here with reference to Figure 5). If the relay is in motion and its SNR measurements are changing (large STD), this degrades the quality of the section.
In tables 40, 41, 42 and 43 shown in Figures 4 -5, the QGR - Quality grade result has 3 quality values: G-good, M-medium, B-bad. These values are a combination of SNR and statistical metrics. The SNR is the minimum SNR that is required for the modulation constellation according to the 3GPP E-UTRAN tables.
E-UTRAN defines an RSRQ parameter that is similar to SNR:
RSRQ =
NxRSRP
RSSI
N = Number of resource blocks
RSRP - Received Reference Signal Power
RSSI - Received Signal Strength Indicator
RSRQ - Received Reference Signal Quality
This formula can be modified as follows:
rsSINR =
NxRSRP
RSSI-NxRSRP rsSINR = —p ---- 1
RSRQ rsSINR = reference signal SINR
In addition, statistical parameters, for example, average or other measure of the central trend, and /
45/50 or standard deviation as below can be computed and can be appropriately combined, using an appropriate application specific combination method, with the above information to generate a highly representative channel quality result:
Average:
^N
E = —YrsSINR (i)
N
Standard deviation:
i N ²
For example, in the field, it may transpire that, given a relatively large standard deviation, a lower total grade should be allocated, if the fluctuation indicated by the large standard deviation is found in preliminary field experiments to produce frequently (a large percentage of the time) SNR unacceptably poor in certain communication segments.
Finally, define the two figures of criteria parameters: Δ _χ and Δ ₂ (0 <Δ _Χ <Δ ₂ ). Using the criteria parameters, for example, determine the QGR using the following two conditions:
{E> SNR _req (l + Δ)
If both conditions apply to Δ = Δ _1ζ then _QGR is G (good), otherwise, if they apply only to Δ = Δ ₂ , then QGR is M (average), otherwise, QGR is B (bad). All of these QGRs are associated with a certain mode of transmission (modulation and encoding). Typical values for the criteria are Δι = 0.1 and Δ ₂ = 0.5. If
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Δ is close to 0, the signal's STD is very small and its mean is narrow (upper side) for the SNR Threshold so no extra margin is apparent, consequently, the situation is good.
Figure 12 represents graphs of the above parameters. As shown, if E is high, large S is acceptable whereas if E is low (margin) of SNR, the standard deviation E is preferably low as well.
Figure 13 is a pictorial illustration of an example of a rescue operation in which several mobile stations and mobile base stations, serving medical personnel, are advancing on terrain where they may never have been deployed, for example, towards a disaster area. It is preferred that the relevant land features may include, instead of or in addition to the topographic features shown, other features, such as flora and / or urban accessories, any of which may interrupt communication between nodes in the communication network.
Each mRS typically has colocalized rRM functionality, rMS functionality and rBS functionality, as shown. A first state of the system is shown as phase A; communication routes are indicated by a triple line. A second state of the system is shown as stage B; communication routes are indicated by a solid line. A third state of the system is shown as phase C; communication routes are indicated by a dotted line. As shown, in stage A, all MSs are conventionally linked to sBS. However, in stage B, the forces move forward. MS1 and MS4 are still camped at sBS, while all other mobile stations obtain communication services via mRSl and mRS2. More generally, according to certain modalities, the service is
47/50 provided by sBSl when possible, which is called the central approach.
In phase C, the forces on the right side advanced. MRS2 is in a valley and is connected to mRSl, but not connected to sBS. The STB table, as shown in Figure 14, shows rRM2 and MS5 that the preferred route is through mRS2 and therefore the communication route for MS5 is changed accordingly, as shown. In idle mode, MS5 can make this decision, while if MS5 is in the active session, or is busy with network operations, the decision can be made and initiated by rRM2.
Figure 14 shows how the tables described here support the decisions in the example in Figure 13. As shown, the tables show that, in stage C, the MS5 MS connectivity decision, rBS2, is wrong. The section measurement table for MS5, however, indicates how to correct the situation: MS5 can be connected to rBSl.
It is appreciated that terminologies such as mandatory, necessary, need and must refer to implementation choices made within the context of a specific implementation or application described here for clarity and are not intended to be a limiting factor since in an implementation Alternatively, the same elements can be defined as not mandatory and are not necessary or could even be completely eliminated.
It is appreciated that the software components of the present invention, including programs and data, can, if desired, be implemented in the form of ROM (Read Only Memory), including CD-ROM, EPROM and EEPROMs, or can be stored in any other suitable computer-readable medium such as, but not limited to, disks of various types, cards of various types and RAMs. Components described here as software can, alternatively, be
48/50 implemented, totally or partially in hardware, if desired, using conventional techniques. Conversely, the components described here as hardware can, alternatively, be implemented, totally or partially in the software, if desired, using conventional techniques.
Included within the scope of the present invention, inter alia, are electromagnetic signals that carry computer-readable instructions for carrying out any or all steps of any of the methods shown and described here, in any suitable order; machine-readable instructions for performing any or all steps of any of the methods shown and described here, in any appropriate order; machine-readable program storage devices, in a tangible form that incorporate a machine-executable instruction program to perform any or all steps of any of the methods shown and described here, in any appropriate order; a computer program product comprising a computer-usable medium, having computer-readable code per program, such as executable code, having incorporated into it, and / or including computer-readable program code for performing any or all of the steps of any of the methods shown and described here, in any appropriate order; any technical effects brought about by any or all steps of any of the methods shown and described here, when performed in any appropriate order; any appropriate apparatus or device or a combination thereof, programmed to perform, alone or in combination, any or all of the steps of any of the methods shown and described here, in any appropriate order; electronic devices each including a processor and a cooperation input device and / or
49/50 output device and operative to perform in software any steps shown and described here, information storage devices or physical records, such as disks or hard disks, causing a computer or other device to be configured to perform any or all steps of any of the methods shown and described here, in any suitable order, a pre-stored program, for example, in memory or on an information network such as the Internet, before or after being downloaded, which incorporates any one or all of the steps of any of the methods shown and described here, in any appropriate order, and the method of loading or unloading such, and a server / s system including, and / or client / s for using such; and hardware that performs any or all of the steps of any of the methods shown and described here, in any suitable order, either alone or in conjunction with the software. Any computer-readable or machine-readable media described in this document is intended to include non-transitory computer or machine-readable media.
Any calculations or other forms of analysis described here can be performed by an appropriate computerized method. Any step described here can be implemented on a computer. The invention shown and described here may include (a) using a computerized method to identify a solution to any of the problems or for any of the objectives described here, the solution optionally includes at least one of a decision, an action, a product, service or any other information described here that positively impacts a problem or objectives described here, and (b) release the solution.
Features of the present invention that are described in the context of the separate embodiments can also
50/50 be supplied in combination, in a single mode. On the other hand, features of the invention, including the steps of the method, which are described for brevity in the context of a single modality or in a certain order can be provided separately or in any suitable subcombination or in a different order, for example, is used here in the sense of a specific example which is not intended to be limiting. Devices, apparatus or systems shown coupled in any of the drawings can, in fact, be integrated into a single platform in certain modalities or can be coupled through any appropriate coupling with wires or wireless such as, but are not limited to, optical fiber , Ethernet, Wireless LAN, HomePNA, Power Line Communication, cell phone, PDA, Blackberry GPRS, satellite including GPS, or other mobile delivery. It is appreciated that, in the description and drawings shown and described here, features described or illustrated as systems and sub-units of the same can also be provided as methods and steps of the same, and features described or illustrated as the methods and steps of the same can also be provided be provided as systems and subunits thereof. The scale used to illustrate various elements in the drawings is merely exemplary and / or appropriate for clarity of presentation and is not intended to be limiting. The flowcharts included here are used to simplify and exemplify methods typically comprising some or all of the steps shown, properly ordered, for example, as shown.

权利要求:
Claims (15)
[1]
1. MOBILE CELL COMMUNICATION SYSTEM, characterized in that it comprises:
a plurality of mobile relays, each including base station functionality, a radio manager and mobile station functionality, all co-located, where each base station functionality is operative to communicate via antennas with at least one mobile station , so to define a first radio link between them, and where each base station feature has a physical link to its co-located radio manager,
on what each feature of mobile station communicates through antennas with one unit that have an functionality of base station, so to define an second call from radio, on what the manager radio in each relay individual mobile is constituted by:
a radio resource manager; and functionality for exchanging information with the radio managers included in the mobile relays other than said individual motion relay, where said information is used by said radio resource manager to select, for at least one individual mobile station that it seeks to be served, one of:
a static base station; and a base station functionality, to which to connect said individual mobile station, in order to provide cellular communications services to it.
[2]
2. SYSTEM, according to claim 1, characterized in that said information used by said
2/7 radio resource manager includes information obtained from its co-located mobile station functionality.
[3]
3. SYSTEM, according to claim 1, characterized in that each of said moving relays and each of said mobile stations constitutes a cellular communication node and in which said connections generate routes that interconnect to said nodes and in that at least one radio resource manager that resides in an individual node is operative to compute a route quality parameter that characterizes the quality of at least one individual route that passes through said individual node, through the combination of information related to connections along said individual route.
[4]
4. SYSTEM, according to claim 1, characterized in that an individual mobile station is connected to an individual base station functionality and in which a decision to transfer said individual mobile station away from said individual base station functionality is made by a resource manager co-located with said individual base station functionality.
[5]
SYSTEM, according to claim 1, characterized in that said information comprises connection information, featuring at least one of said radio links.
[6]
6. SYSTEM, according to claim 1, characterized in that each of said radio managers is operated by a computer, for at least one individual mobile station, route comparison information including a plurality of base station routes through which each mobile station can communicate with the main network and in which at least one parameter defining the relative quality of each of the routes and to communicate the indicative information of the individual mobile station of the information of
3/7 route comparison and where the individual mobile station is operated to select a base station to be connected to at least one partially based on information indicative of route comparison information,
And where the parameter defining the quality of the route is the combination of measured quality of sections of the route and fluctuations of the route so that the sections of route with highly variable quality standards are devalued due to their unpredictability.
[7]
7. SYSTEM, according to claim 1, characterized in that the mobile relays observe a period of silence during which they avoid transmission to their own co-located mobile station.
[8]
8. SYSTEM, according to claim 1, characterized in that if a multi-hop communication route is used, in which a relay R that is connected to the main network through another relay A, relay R sends a message to a backhauling relay that R is an anchor of A.
[9]
9. MOBILE COMMUNICATION NETWORK SYSTEM operating in conjunction with a network including a main device, a plurality of base stations, including at least one static base station, and a population of mobile stations that communicate via antennas with at least one base stations, the characterized system comprising:
at least one moving base station included in said plurality of base stations that communicates via antennas with the mobile stations and includes a base station functionality, a first radio manager and mobile station functionality all co-located with the functionality base station, the base station functionality having a physical connection, back to the first radio manager, the
4/7 first radio manager having a physical connection with the mobile station functionality, the mobile station functionality communicating through antennas with at least one selectable base station, where the first radio manager comprises:
a radio resource manager; and functionality for receiving information from and sending information to, other radio managers, respectively co-located with other mobile base stations, and to use the information to determine whether to reject at least one mobile station seeking to be served by a station individual base associated with the co-located individual radio manager.
[10]
10. SYSTEM, according to claim 1, characterized in that the system is operated in conjunction with a network including a central device, a plurality of base stations including at least one static base station, and a population of mobile stations communicating via antenna with at least one of the base stations, in which the radio manager functionally understands to receive information from, and send information to, other radio managers, respectively co-located with other mobile base stations, in which at least one radio manager radio is computer operated, for at least one individual mobile base station, route comparison information including a plurality of routes by which the individual mobile base station can communicate with the central network and at least one parameter defining the relative quality of each one of the routes and where each said individual mobile base station connects to a base station if server selected at least partially based on information indicative of said route comparison information,
5/7 and where the plurality of routes from base stations via which the individual mobile base station can communicate with the central network includes at least one route defined by a multiple hop hop backhauling, where the radio computes said route comparison information for an individual mobile base station served thus whose mobile station functionality is to communicate in standby mode, via antenna, with at least one selectable base station.
[11]
11. SYSTEM, according to claim 1, characterized in that the system is operated in conjunction with a network including a central device, a plurality of base stations including at least one static base station, and a population of mobile stations communicating via antenna with at least one of the base stations, in which the radio manager functionally understands to receive information from, and send information to, other radio managers, respectively co-located with other mobile base stations, in which at least one radio manager radio is computer operated, for at least one individual mobile base station, route comparison information including a plurality of routes by which the individual mobile base station can communicate with the central network and at least one parameter defining the relative quality of each one of the routes and where each said individual mobile base station connects to a base station if server selected at least partially based on information indicative of said route comparison information, and where the plurality of routes from base stations via which the individual mobile base station can communicate with the central network includes at least one route defined by a multi-hop backhauling in band,
6/7 in which the radio manager computes said route comparison information for a joint co-located mobile base station, whose mobile station functionality is to communicate actively, via antenna, with at least one selectable base station .
[12]
12. SYSTEM, according to claim 9, characterized in that said functionality is operative to detect the quality of each final user section and the quality of each backhauling section according to the measures of mobile station and mobile station functionality and to combine said qualities in a grid of quality results for the current route and for alternative routes for at least one mobile station.
[13]
13. SYSTEM according to claim 9, characterized in that at least one radio manager masks itself as a base station to send a request to a mobile station functionality to perform an NMR measurement (conventional Network Measurement Report ).
[14]
14. SYSTEM, according to claim 1, in which said radio manager includes a multi-hop backhauling functionality in a band, wherein said multi-hop backhauling functionality is characterized by being operative to increase the immunity due to interference, where each new alternative route includes a section between an end user mobile station and a mobile relay it is connected to, and the backhauling section, including links between the mobile relays that are part of the route as nodes.
[15]
15. MOBILE COMMUNICATION NETWORK METHOD, characterized in that it comprises:
provide a plurality of mobile relays, each including a stationary base feature, a radio manager and a mobile station feature,
7/7 all co-located, where each base station feature is operated to communicate via antenna with at least one mobile station, thus defining a first radio link between there, and where each base station feature has a physical connection with its colocalized radio manager, where each mobile station functionality communicates via antenna with a unit that has base station functionality, therefore defining a second radio link, including providing, in the radio manager on each individual mobile relay :
a radio resource manager; and functionality for exchanging information with the radio managers included in the mobile relays other than said individual motion relay, where said information is used by said radio resource manager to select, for at least one individual mobile station that it seeks to be served, one of:
a static base station; and a base station functionality, to which to connect said individual mobile station, in order to provide cellular communications services to it.

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EP2529593B1|2019-05-08|

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WO2011092698A1|2011-08-04|

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法律状态:
2019-10-01| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-11-26| B08F| Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]|Free format text: REFERENTE A 9A ANUIDADE. |

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2020-03-17| B08K| Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]|Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2551 DE 26-11-2019 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |

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2021-10-05| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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