WO2012040939A1 - Procédé et système permettant à un nœud relais d'acquérir des informations de réseau d'accès radio d'un système hétérogène - Google Patents

Procédé et système permettant à un nœud relais d'acquérir des informations de réseau d'accès radio d'un système hétérogène Download PDF

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Publication number
WO2012040939A1
WO2012040939A1 PCT/CN2010/077543 CN2010077543W WO2012040939A1 WO 2012040939 A1 WO2012040939 A1 WO 2012040939A1 CN 2010077543 W CN2010077543 W CN 2010077543W WO 2012040939 A1 WO2012040939 A1 WO 2012040939A1
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Prior art keywords
information
access network
radio access
different system
rim
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PCT/CN2010/077543
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English (en)
Chinese (zh)
Inventor
邓云
王冠宙
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中兴通讯股份有限公司
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Priority to PCT/CN2010/077543 priority Critical patent/WO2012040939A1/fr
Publication of WO2012040939A1 publication Critical patent/WO2012040939A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and system for a relay node to acquire information of a wireless access network of a different system. Background technique
  • the third generation mobile communication Long Term Evolution (LTE) system consists of Evolved Universal Terrestrial Radio Access Network (E-UTRAN), User Equipment (UE, User Equipment), and evolved packet core.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • UE User Equipment
  • EPC Evolved Packet Core
  • the E-UTRAN is an enhanced base station of the access network element
  • the eNB is connected to the UE through the Uu interface, and is connected to the core network element, such as a mobility management entity (MME, Mobility Management Entity) through the SI interface.
  • MME mobility management entity
  • LTE-Advanced Long-Term Evolution advance
  • LTE-Advanced retains the core of LTE for the evolution of LTE systems. Based on this, a series of technologies are used to expand the frequency domain and airspace to improve spectrum utilization and increase system capacity. Wireless relay
  • (Relay) technology is one of the technologies in LTE-Advanced, which aims to extend the coverage of the cell, reduce the dead zone in communication, balance the load, transfer the traffic in the hotspot, and save the UE's transmit power.
  • the relay node (RN, Relay Node) is connected to the UE through the Uu interface to provide the function of the base station.
  • the RN is connected to the base station through the Un interface to provide the functions of the UE.
  • the base station connected to the RN is called a donor base station (DeNB, Donor eNB), and the DeNB is connected to a core network element such as an MME through an SI interface.
  • the RN passes the DeNB proxy (proxy) and the core network.
  • the network element such as the MME, remains connected, thereby implementing a relay function for data transmission between the RN and the base station, between the RN and the UE managed by itself, to reach the coverage of the extended cell, reduce the dead zone in the communication, and balance Load, transfer traffic in hotspots, and save UE's transmit power.
  • the RN establishes radio resource control in the cell under the jurisdiction of the access DeNB.
  • DRB Data Radio Bearer
  • the cell under the jurisdiction of the RN may be associated with other heterogeneous systems (such as the GERAN system or
  • the WCDMA system has a neighbor relationship.
  • the cell under the jurisdiction of the RN may switch some UEs in the connected state to the neighboring cells of the different system for load balancing.
  • the RN Before performing load balancing, the RN needs to first obtain the radio access network information of the different system (mainly refers to the load information of the cell, where the cell refers to the neighboring cell of the different system of the cell under the jurisdiction of the RN, which may be referred to as the target cell) .
  • the access to the wireless access network information of the different systems in the existing protocol is implemented by the RN (RAN Information Management) process:
  • the base station in the LTE system evolves to the enhanced data rate global mobile communication system through the core network.
  • the base station system (BSS, Base Station System) of the (GERAN, GSM EDGE Radio Access Network) system or the Radio Network Controller (RNC) in the WCDMA system transmits the radio access network information (such as cell load, or cell). Request for system message, etc.
  • BSS Base Station System
  • GERAN GSM EDGE Radio Access Network
  • RNC Radio Network Controller
  • the BSS or RNC of the different system receives the wireless connection through the core network After the request for the network access information, the requested radio access network information (the load information of the target cell or the cell system message) is obtained, and the radio access network information is returned to the base station of the LTE system through the core network.
  • a network element that initiates access to radio access network information of other systems is called a Controlling Base System (Controlling BSS), and a network element that provides cell information is called a Serving BSS, a control base station system, and a serving base station.
  • the system needs to support the base station subsystem GPRS protocol (BSSGP, Base Station Subsystem GPRS Protocol).
  • BSSGP Base Station Subsystem GPRS Protocol
  • the control base station system sends signaling carrying the RIM Information Request PDU to the serving base station system through the core network, where the PDU includes a RIM Container and a RIM Routing Information.
  • the RIM container contains: a RIM Application Identity, an Application Container, and a RIM Sequence Number.
  • the RIM application layer identifier includes radio access network information to be acquired, such as SON Transfer (load information of the target cell), System Information (system information of the target cell), MBMS data channel (MBMS data tunnel information of the target cell), and the like;
  • the layer container contains the identifier of the target cell to be acquired or the cell identifier (Reporting Cell Identifier, where Reporting refers to the meaning that Serving BSS returns to Controlling BSS).
  • the RIM routing information is used to route the "signaling for obtaining radio access network information", and includes: a source identifier and a target identifier.
  • the source refers to the control base station system;
  • the target refers to the serving base station system.
  • the corresponding source identifier and target identifier are also different.
  • the identifier refers to the identifier of the cell under the jurisdiction of the BSS; if the WCDMA system uses the RNC identifier to route, the identifier (source identifier or target identifier) refers to The identifier of the RNC; the LTE system uses the eNB identifier to route, and the identifier (source identifier or target identifier) is the identifier of the base station.
  • the base station identifier (eNB ID) of the RN uses the base station identifier of the DeNB to which it accesses. If the RN supports the BSSGP, the RN may initiate a RIM process to obtain a load signal of the cell through the DeNB and the core network to the BSS or the RNC of the different system when the load information of the cell under the jurisdiction of the different system needs to be obtained.
  • the DeNB since multiple RNs (RN1, RN2, etc.) can be accessed by the same DeNB, if different RNs need to acquire cell information (such as cell load) from the same cell of the different system, the DeNB will go to the core.
  • the network sends multiple signalings for acquiring cell information, which not only increases the processing load of the core network, but also causes the DeNB to receive the different system because the signaling returned by the different system is routed by the identifier of the RN (identical to the identity of the DeNB). After the returned signaling, it cannot be correctly routed to the corresponding RN.
  • the RN does not support the BSSGP, there is no solution for how the RN obtains the cell information of the cell under the jurisdiction of the different system.
  • the patent proposes a solution for the relay node to acquire the information of the wireless access network of the different system. Summary of the invention
  • the main purpose of the present invention is to provide a method and system for a relay node to acquire information of a different system radio access network, which can solve the signaling of the DeNB returned by the different system, and the DeNB cannot be different.
  • the returned signaling is correctly routed to the corresponding RN.
  • a method for a relay node to acquire information of a different system radio access network wherein one or more relay nodes (RNs) supporting a General Packet Radio Service Technology Protocol (BSSGP) access a donor base station (DeNB), and the DeNB As a BSSGP agent, the method further includes:
  • Radio access network information PDU radio access network information data
  • the BSSGP agent reads the radio access network information management (RIM) information in the RAN Information PDU, and matches the locally stored RIM information with the RN;
  • RIM radio access network information management
  • the BSSGP proxy sends the corresponding acquired radio access network information to one or more RNs that have successfully matched.
  • the different system when the different system is a GERAN system, one or more different systems are acquired through the BSS Radio access network information of the unified cell; when the different system is a WCDMA system, acquiring radio access network information of one or more different system cells by using the RNC;
  • the one or more different system cells belong to the same BSS or RNC.
  • the locally stored RIM information is matched with the RN, and includes: an identifier of the unified cell, a radio access network information to be acquired, and a RIM sequence number, and the identifier of the different system cell that needs to be acquired locally, and needs The acquired radio access network information, the RIM serial number, and the RN are matched.
  • the method further includes:
  • the BSSGP proxy receives the RIM information sent by the one or more RNs, including: the different system cell that needs to be acquired
  • the identifier of the radio access network to be obtained, the RIM serial number, and the RIM serial number are established locally.
  • the identifier of the different system cell that needs to be acquired by the RN, the radio access network information that needs to be acquired, and the RIM sequence number are specifically:
  • Each RN construct includes an identifier of the different system cell to be acquired, radio access network information to be acquired, and RIM Information Request PDU of the RIM sequence number, and is sent to the station through direct information transmission signaling of the base station.
  • Said BSSGP agent includes an identifier of the different system cell to be acquired, radio access network information to be acquired, and RIM Information Request PDU of the RIM sequence number, and is sent to the station through direct information transmission signaling of the base station.
  • the method further includes: the identifier of the different system cell that needs to be acquired by the BSSGP proxy according to one or more RNs, the radio access network information that needs to be acquired, and the RIM
  • the serial number construct RIM Information Request PDU is sent to the mobility management entity (MME) through a base station direct information transfer signaling; Sending, by the MME, signaling of the RIM Information Request PDU that is configured by the BSSGP proxy to the BSS or the RNC;
  • MME mobility management entity
  • the BSS or the RNC After receiving the RIM Information Request PDU, the BSS or the RNC obtains radio access network information of one or more different system cells that are requested by one or more RNs.
  • the method further includes: the BSSGP proxy associating the RIM serial number carried in the constructed RIM Information Request PDU with the RIM serial number saved in the corresponding relationship.
  • the heterogeneous system sends the RAN Information PDU to the BSSGP agent, including:
  • the BSS or the RNC sends the signaling carrying the RAN Information PDU to the MME; the MME sends the RAN Information PDU to the BSSGP proxy through a MME direct information transmission signaling.
  • the BSSGP proxy sends the corresponding acquired radio access network information to the one or more RNs that are successfully matched, including:
  • the BSSGP proxy constructs the identifier of the different system cell to be acquired, the radio access network information to be acquired, the corresponding acquired radio access network information, and the RAN information PDU of the RIM sequence number, and directly transmits the information through one or more MMEs. Signaling is sent to the one or more RNs.
  • the radio access network information includes load information of the cell, and/or part or all of the system message of the cell, and/or MBMS data channel information.
  • the DeNB reads the request information in the RAN Information PDU, and matches the locally saved request information with the RN; The DeNB sends the corresponding acquired radio access network information to one or more RNs that have successfully matched.
  • the radio access network information of one or more different system cells is acquired by the BSS; when the different system is a WCDMA system, the radio connection of one or more different system cells is acquired by the RNC.
  • Network access information When the heterogeneous system is a GERAN system, the radio access network information of one or more different system cells is acquired by the BSS; when the different system is a WCDMA system, the radio connection of one or more different system cells is acquired by the RNC. Network access information;
  • the one or more different system cells belong to the same BSS or RNC.
  • the DeNB reads the request information in the RAN Information PDU, and matches the locally stored request information with the RN, specifically:
  • the DeNB reads the identifier of the different-system cell that needs to be acquired in the RAN Information PDU, and the radio access network information that needs to be acquired, and the identifier of the different-system cell that needs to be acquired locally and the wireless access that needs to be acquired.
  • the matching between the network information and the RN is performed.
  • the method further includes:
  • Each RN sends a request to obtain the radio access network information signaling to the DeNB, and the request information sent by the RN includes: an identifier of the different system cell to be acquired and information about the radio access network to be acquired. And requesting to obtain radio access network information signaling as RRC signaling, S1 signaling, or X2 signaling;
  • the DeNB receives the request information sent by the one or more RNs, and establishes a correspondence between the request information and the RN locally.
  • the method further includes:
  • the DeNB constructs a RIM Information Request PDU according to the identifier of the different system cell that needs to be acquired by the one or more RNs, and the radio access network information that needs to be acquired, and sends the MME Information Request PDU to the MME through a base station direct information transmission signaling;
  • the MME sends signaling of the RIM Information Request PDU that is configured by the DeNB to the BSS or the RNC; After receiving the RIM Information Request PDU, the BSS or the RNC acquires radio access network information of one or more different system cells that are requested by one or more RNs.
  • the heterogeneous system sends the RAN Information PDU to the DeNB, including:
  • the BSS or the RNC sends the signaling carrying the RAN Information PDU to the MME; the MME sends the RAN Information PDU to the BSSGP proxy through an MME direct information delivery signaling.
  • the DeNB sends the corresponding acquired radio access network information to the one or more RNs that are successfully matched, including:
  • the DeNB sends one or more radio access network information response signalings including corresponding acquired radio access network information to the one or more RNs; the radio access network information response signaling is RRC signaling , S1 signaling or X2 signaling.
  • the radio access network information includes load information of the cell, and/or part or all of the system message of the cell, and/or MBMS data channel information.
  • a system for a relay node to acquire information of a different system radio access network comprising: a different system, a BSSGP proxy, and one or more RNs supporting a BSSGP, the BSSGP proxy including a DeNB, and the one or more RNs ; among them,
  • the different system configured to acquire radio access network information of one or more heterogeneous cells that the one or more RNs need to acquire, and send the information to the BSSGP proxy by using a RAN Information PDU;
  • the BSSGP proxy is configured to read the RIM information in the RAN Information PDU, and perform matching in the locally stored RIM information and the RN correspondence; and is further configured to read the obtained wireless from the RAN Information PDU. Accessing the network information, and sending the corresponding obtained radio access network information to one or more RNs that have successfully matched;
  • the RN is configured to receive the obtained radio access network information that is sent by the BSSGP proxy.
  • the BSSGP proxy is further configured to read the RIM information in the RAN Information PDU, including: an identifier of the different system cell to be acquired, a radio access network information to be acquired, and a RIM sequence number; and the locally saved RIM The correspondence between the information and the RN is matched.
  • the RN is further configured to construct an RIM Information Request PDU that includes an identifier of a different system cell that needs to be acquired, a radio access network information to be acquired, and a RIM sequence number, and sends the information to the BSSGP proxy through direct information transmission signaling of the base station. ;
  • the BSSGP proxy is further configured to: according to the identifier of the different system cell that needs to be acquired sent by one or more RNs, the radio access network information that needs to be acquired, and the RIM sequence number to construct a RIM Information Request PDU through a base station direct information transmission letter Sending to the MME, by using the MME, forwarding the RIM Information Request PDU constructed by the BSSGP proxy to the different system;
  • the different system is further configured to: after receiving the RIM Information Request PDU constructed by the BSSGP proxy, acquire radio access network information of one or more different system cells that are requested by one or more RNs.
  • the BSSGP proxy is further configured to: after receiving the RAN Information PDU sent by the different system, re-construct the identifier of the different-system cell that needs to be acquired, the radio access network information that needs to be acquired, and the corresponding acquired radio access
  • the RAN Information PDU of the network information and the RIM serial number is sent to the one or more RNs that are successfully matched by one or more MME direct information delivery signaling.
  • a system for a relay node to acquire information of a different system radio access network comprising: a heterogeneous system, a DeNB, and one or more RNs that do not support a BSSGP, wherein the DeNB is in charge of the one or more RNs;
  • the different system is configured to acquire radio access network information of one or more different system cells that the one or more RNs need to acquire, and send the information to the DeNB by using a RAN Information PDU; Taking the request information in the RAN Information PDU, and The locally stored request information is matched with the RN, and is further configured to read the obtained radio access network information from the RAN Information PDU, and send the corresponding acquired location to the successfully matched one or more RNs.
  • Wireless access network information
  • the RN is configured to receive the acquired radio access network information sent by the DeNB.
  • the DeNB is further configured to: read the request information in the RAN Information PDU, where: the identifier of the different system cell to be acquired, the radio access network information to be acquired, and the RIM sequence number; and the locally saved request information Matching is made in the correspondence with the RN.
  • the RN is further configured to send a request for acquiring radio access network information signaling to the DeNB, where the identifier of the inter-system cell that needs to be acquired and the radio access network information that needs to be acquired is sent;
  • the signaling is RRC signaling, S1 signaling or X2 signaling;
  • the DeNB is further configured to send, according to the identifier of the different system cell that needs to be acquired by the one or more RNs, and the radio access network information that needs to be acquired, the RIM Information Request PDU to be sent to the MME by using a direct information transmission signaling of the base station. Forwarding, by the MME, the RIM Information Request PDU constructed by the DeNB to the different system;
  • the different system is further configured to: after receiving the RIM Information Request PDU constructed by the DeNB, acquire radio access network information of one or more different system cells that are requested by one or more RNs.
  • the DeNB is further configured to send one or more radio access network information response signalings that include the corresponding acquired radio access network information to the one or more RNs that are successfully matched; the radio access network information.
  • the response signaling is RRC signaling, S1 signaling, or X2 signaling.
  • the scheme for acquiring the information of the different system radio access network by the relay node of the present invention when the DeNB receives the signaling of requesting the radio access network information sent by the multiple RNs, the identifier of the different system cell that needs to be acquired by the RN is locally established, Corresponding relationship between the radio access network information and the RIM sequence number and the RN to be obtained, so that after the DeNB receives the signaling that the different system returns the information of the acquired radio access network, the DeNB can acquire the different system cell according to the needs of the RN.
  • FIG. 1 is a schematic structural diagram of a system for using a wireless relay technology in the prior art
  • FIG. 2 is a schematic flowchart of a method for a relay node to acquire information of a wireless access network of a different system according to the present invention
  • FIG. 3 is a schematic flowchart of a method for a relay node to acquire information of a wireless access network of a different system according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for a relay node to acquire information of a wireless access network of a different system according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic flowchart of a method for acquiring information of a different system radio access network by a relay node according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a method for acquiring information of a different system radio access network by a relay node according to an embodiment of the present invention. detailed description
  • the method for the BSSGP supporting the BSSGP to obtain the information of the different system radio access network is as shown in FIG. 2, and includes:
  • Step 201 The heterogeneous system acquires radio access network information of one or more different system cells requested by one or more RNs, and sends the information to the BSSGP proxy through radio access network information data (RAN Information PDU).
  • RAN Information PDU radio access network information data
  • one or more RNs access one DeNB, and when the RN supports the BSSGP, the DeNB acts as a BSSGP proxy.
  • the BSSGP proxy receives the identifier of the different-system cell that needs to be acquired and is obtained by the RN.
  • the line accesses the network information and the RIM sequence number, and locally establishes the identifier of the different system cell to be acquired, the radio access network information to be acquired, and the correspondence between the RIM sequence number and the RN.
  • the RN structure includes the identifier of the different system cell to be acquired, the radio access network information to be acquired, and the RIM sequence number.
  • the RIM Information Request PDU is sent to the BSSGP agent through the base station direct information transfer signaling.
  • the signaling carrying the RAN Information PDU is sent to the MME; the MME sends the RAN Information PDU to the BSSGP proxy through the MME direct information signaling.
  • Step 202 The BSSGP agent reads the RIM information in the RAN Information PDU, and matches the locally saved RIM information with the RN.
  • the RIM information includes: the identifier of the different system cell to be acquired, the wireless access network information to be acquired, and the RIM serial number.
  • a RIM needs to be constructed according to the identifier of the different system cell that needs to be acquired sent by one or more RNs, the radio access network information to be acquired, and the RIM sequence number.
  • the information request PDU is sent to the MME through a direct information transmission signaling of the base station. Then, the MME sends the signaling of the RIM Information Request PDU that carries the BSSGP proxy to the different system. After receiving the RIM Information Request PDU, the RN needs to obtain the RN. Wireless access network information.
  • the BSSGP proxy also needs to associate the RIM sequence number carried in the constructed RIM Information Request PDU with the RIM sequence number saved in the corresponding relationship when the BSSGP proxy constructs the RIM Information Request PDU.
  • Step 203 The BSSGP proxy sends the corresponding acquired radio access network information to the one or more RNs that are successfully matched.
  • the BSSGP proxy construct contains the identifier of the different system cell that needs to be acquired, and the wireless that needs to be acquired. Access network information, the corresponding wireless access network information acquired by the different system, and the RIM serial number
  • the RAN Information PDU is sent to the RN that successfully matches through one or more MME direct information signaling.
  • the following describes the scheme for obtaining the radio access network information when the RN supports the BSSGP by using the first to fourth embodiments, where the DeNB functions as a BSSGP proxy.
  • the relay node includes RN1, RN2, and RN3, the cell under the jurisdiction of RN1 is RN_Celll, the cell under the jurisdiction of RN2 is RN_Cell2, and the cell under the jurisdiction of RN3 is RN_Cell3; the host base station accessed by RN1, RN2, and RN3 is represented by DeNB. ; RN_Celll, RN_Cell2, and RN_Cell3 are neighbors of CellA of the cell under the jurisdiction of the BSS or RNC.
  • This embodiment takes the neighboring cell of the different system as an example.
  • the RN can also obtain the wireless access network information of the non-adjacent cell of the different system.
  • RN1, RN2, and RN3 need to obtain the radio access network information of CellA.
  • load information, RN1, RN2, and RN3 are control base station systems, BSS.
  • the RNC is a serving base station system; both the control base station system and the serving base station system support the BSSGP.
  • FIG. 3 The process of acquiring the load information of CellA by RN1, RN2, and RN3 is as shown in FIG. 3, including:
  • Step 301 RN1, RN2, and RN3 respectively send base station direct information transfer (eNB Direct Information Transfer) signaling to the DeNB, and request to acquire the load information of the CellA.
  • base station direct information transfer eNB Direct Information Transfer
  • the base station direct information transmission signaling contains cells RIM Information
  • the cell contains the RIM container and RIM routing information
  • the RIM container contains: RIM application layer identifier, application layer container, and RIM serial number;
  • the RIM application layer identifier carries the radio access network information that needs to be acquired, such as the load information of the cell (SON Transfer), all or part of the system information (System Information) of the cell, the MBMS data channel information of the cell, etc.; In the embodiment, because RN1 To obtain the load information of CellA, RN1 sets the value of the RIM1 application layer identifier to SON Transfer.
  • the application layer container carries the identifier of the different system cell to be acquired, or the identifier of the cell to be reported (Reporting Cell Identifier).
  • the hetero-system cell is CellA
  • the RN1 sets the value of the application layer container to CellA.
  • the RIM serial number is set autonomously by each relay node; the RIM serial number in the direct information transmission signaling of the base station transmitted by each relay node may be the same or different;
  • the RIM routing information is used to route the signaling carrying the RIM Information Request PDU, carrying the source identifier and the target identifier.
  • the target base station system is a BSS or an RNC, and the target identifier is the identifier of the cell that the BSS is responsible for (in this embodiment, the identifier of the CellA under the jurisdiction of the BSS), or the identifier of the RNC (in this embodiment, the CellA belongs to the RNC logo).
  • the control base station system that is, the RN1 is located in the LTE system
  • the source identifier is the base station identifier of the RN1, which is consistent with the base station identifier of the DeNB (for the RN2 and the RN3, the source identifier is also the base station identifier of the DeNB).
  • Step 302 The DeNB establishes the identifier of the different system cell to be acquired, the radio access network information to be acquired, the correspondence between the RIM sequence number and the relay nodes (RN1, RN2, and RN3), and saves the information, and sends the information to the MME of the core network.
  • a reconstructed base station direct information transfer signaling.
  • the DeNB receives the direct information transmission signaling of the three base stations, and after analyzing the RIM Information Request PDU in each of the signaling, the RN1, the RN2, and the RN3 need to obtain the load information of the CellA.
  • the DeNB obtains the following information from each RIM Information Request PDU: reading the identifier of the different system cell that needs to be acquired from the application layer container (the identifier of the CellA), and reading and obtaining the radio access network information that needs to be acquired from the RIM application layer identifier. (SON Transfer), reading the RIM serial number from the RIM container; then, the DeNB establishes the correspondence between the above information and the relay node, and Save.
  • the DeNB may locally store the correspondence in the form of a list.
  • the present invention is not limited to the manner of the list (and may also include other information in the RIM Information Request PDU), as long as it can be clearly and unambiguously displayed. The above correspondence can be.
  • the relay node included in the list may be an identifier of the relay node, such as a name of the relay node, or an identifier of a cell managed by the relay node.
  • the DeNB sends a reconfigured base station direct information transmission signaling to the MME of the core network, and the signaling may be the same as any one of the three base station direct information transmission signalings sent by the RN1, the RN2, and the RN3; or the DeNB resets the RIM. Serial number, other parameters are unchanged.
  • the DeNB reconstructs the direct information transmission signaling of the base station to aggregate the requirements of the multiple relay nodes.
  • the RIM Information Request PDU of the base station direct information transmission signaling reconstructed by the DeNB includes:
  • the value of the RIM application layer identifier is: SON Transfer; the application layer container contains the identifier of the CellA; the RIM routing information includes the source identifier (the base station identifier of the DeNB) and the target identifier (the identifier of the CellA governed by the BSS, or the identifier of the RNC to which the CellA belongs) ).
  • the RIM serial number it can be either 1 or 2 (shown in Table 1) or it can be reset.
  • the DeNB reconstructs the direct information transmission signaling of the base station
  • the direct information transmission signaling of the three base stations sent by the RN1, the RN2, and the RN3 needs to be associated with the eNB, and the specific RIM serial number is used for association. The signaling is then returned to the relay node.
  • the DeNB reconstructs the direct information transmission of the base station.
  • the RIM sequence number of the signaling is 10, then save it with Table 1.
  • the RIM sequence numbers 1, 2 and 1 are associated, or the DeNB can set a new correspondence as shown in Table 1.1.
  • Step 303 After receiving the reconstructed direct information transmission signaling of the base station, the MME sends signaling that carries the RIM Information Request PDU to the BSS or the RNC.
  • the base station direct information transmission signal includes RIM routing information, and the MME can implement routing according to this, which belongs to the prior art.
  • Step 304 After receiving the signaling of the RIM Information Request PDU, the BSS or the RNC parses the RIM Information Request PDU, and the BSS or the RNC obtains the load information of the CellA. The details of the RAN Information PDU, including the load information of the CellA, are returned to the MME.
  • the data structure of the RAN Information PDU is the same as the data structure of the RIM Information Request PDU received by the BSS or the RNC, and the content included is also substantially the same, different:
  • the application layer container in the RIM Information Request PDU carries the identifier of the CellA; and the application layer container in the RAN Information PDU carries the acquired load information of the CellA in addition to the identifier of the CellA;
  • Step 305 After receiving the RAN Information PDU, the MME direct information transfer (MME Direct Information Transfer) signaling carrying the RAN Information PDU is sent to the DeNB.
  • MME Direct Information Transfer MME Direct Information Transfer
  • Step 306 After receiving the MME direct information transmission signaling, the DeNB parses the RAN information PDU, and obtains the identifier of the different system cell that needs to be obtained: the identifier of the CellA, and the information about the radio access network that needs to be learned is: Information, and RIM serial number (assumed to be 10).
  • the DeNB can be associated with the RIM sequence numbers 1, 2 and 1 according to the RIM sequence number (10) read from the RAN Information PDU, thereby being directly associated with the three base stations transmitted by RN1, RN2 and RN3. Information transfer signaling; Then, the DeNB matches the information read in the step according to the correspondence list established in step 302, and can determine that RN1, RN2, and RN3 need to obtain the load information of the CellA, and then the DeNB reconstructs the MME. Direct information transfer signaling is sent to RN1, RN2 and RN3.
  • the reconstructed three MME direct information transmission signalings are substantially the same as the MME direct information transmission signaling received by the DeNB, except that for RN1, the RIM serial number is 1; for RN2, the RIM serial number is 2; RN3, RIM serial number is 1.
  • Step 307 After receiving the direct information transmission signaling of the MME, the RN1, the RN2, and the RN3 parse the RAN Information PDU, and obtain the load information of the CellA.
  • RN1, RN2, and RN3 can obtain the load information of the CellA of the BSS or RNC under different systems, and then apply it to load balancing or handover decision. For example, if the UE under the jurisdiction of the RN1 needs to switch to the different system, the RN1 determines whether the UE can be switched over according to the load of the CellA: If the load of the CellA is light, the RN1 switches the UE in the connected state to the CellA to mitigate The load of the system cell.
  • the DeNB After the DeNB receives the returned RAN Information PDU (that is, obtains the load information of CellA), the DeNB receives another relay node RN4 under its jurisdiction.
  • the RAN Information Request PDU requests to obtain the load information of the CellA
  • the DeNB directly returns a RIM Information PDU to the RN4, which includes the load information of the obtained CellA.
  • the process is also applicable to the case where the relay node acquires part or all of the System Information. or MBMS data channel of the different system cell, and details are not described herein again.
  • the eNB may also send the acknowledged data (RAN INFORMATION ACK PDU) to the DeNB, and the data is also sent to the DeNB through the direct information transmission signaling of the base station, and the DeNB needs to The correspondence established in step 302 determines to send an acknowledgment data (RAN INFORMATION ACK PDU) to the BSS or RNC, and then sends the base station direct information transmission signaling to the MME. Or, after receiving the MME direct information transmission signaling sent by the MME in step 306, the DeNB immediately returns the acknowledged data (RAN-INFORMATION-ACK PDU); when the DeNB receives the acknowledgement data returned by the relay node, directly throw away.
  • RAN INFORMATION ACK PDU acknowledgment data
  • the DeNB after receiving the MME direct information transmission signaling sent by the MME in step 306, the DeNB immediately returns the acknowledged data (RAN-INFORMATION-ACK PDU); when the DeNB receives the acknowledgement data returned by the relay node, directly throw away.
  • RN1, RN2, and RN3 are relay nodes under the jurisdiction of the DeNB, and the cell under the jurisdiction of RN1 is RN_Celll, the cell under the jurisdiction of RN2 is RN_Cell2, and the cell under the jurisdiction of RN3 is RN_Cell3; RN_Celll is the neighbor of CellA of the cell under the jurisdiction of BSS or RNC.
  • the area, RN_Cell2 is the neighboring cell of the CellB of the BSS or the RNC, and the RN_Cell3 is the neighboring cell of the CellC of the BSS or the RNC. It should be noted that CellA, CellB and CellC belong to the same BSS or RNC.
  • RN1, RN2, and RN3 need to obtain load information of CellA, CellB, and CellC, respectively, in order to implement load balancing, neighboring cell parameter configuration, or handover between networks.
  • the process includes:
  • Step 401 RN1, RN2, and RN3 respectively send a base station direct information transmission signal to the DeNB, and the RN1 requests to acquire the load information of the CellA; the RN2 requests to acquire the load information of the CellB; and the RN3 requests to acquire the load information of the CellC.
  • the configuration of the base station direct information transmission signaling in this embodiment is the same as that in the first embodiment (step 301). I will not repeat them here.
  • Step 402 The DeNB establishes the identifier of the different system cell to be acquired, the radio access network information to be acquired, the correspondence between the RIM sequence number and the relay nodes RN1, RN2, and RN3, and saves the information, and sends a re-send to the MME of the core network.
  • the constructed base station directly transmits information signaling.
  • the DeNB After receiving the direct information transmission signaling of the three base stations, the DeNB needs to obtain the load information of the CellA, the RN2 needs to obtain the load information of the CellB, and the RN3 needs to obtain the load information of the CellC, and the DeNB establishes the identifier of the different system cell to be acquired locally.
  • the DeNB sends a reconfigured base station direct information transmission signaling to the MME, where the value of the RIM application layer identifier is SON Transfer in the RIM Information Request PDU of the signaling; the identifier of the different system cell that needs to be acquired in the application layer container Set the identifiers of the CellA, the CellB, and the CellC.
  • the identifier of the different-system cell to be acquired can be extended to the identifier list.
  • the source identifier is still the identifier of the DeNB. For the target identifier, because of the CellA, CellB, and CellC.
  • the target identifier can be the identifier of CellA, CellB, or CellC, and any of the three can be routed to the BSS to which CellA, CellB, and CellC belong. If the different system is a WCDMA system, the target identifier is the identifier of the RNC to which CellA, CellB, and CellC belong.
  • Step 403 After receiving the direct information transmission signaling of the base station, the MME sends the signaling carrying the RIM Information Request PDU to the BSS or the RNC.
  • Step 404 After receiving the RAN Information Request PDU, the BSS or the RNC obtains the RAN The load information of CellA, CellB, and CellC is taken, and the signaling carrying the RAN Information PDU is returned.
  • the application layer container in the RAN Information PDU carries the load information of the acquired CellA, CellB, and CellC in addition to the identifiers of the CellA, the CellB, and the CellC.
  • Step 405 The MME sends the MME direct information delivery signaling carrying the RAN Information PDU to the DeNB.
  • Step 406 After receiving the MME direct information transmission signaling, the DeNB parses the RAN Information PDU, and obtains the identifier of the different system cell that needs to be obtained: the identifiers of the CellA, the CellB, and the CellC, and the information of the radio access network that needs to be learned is : Load information, and RIM serial number.
  • the DeNB performs the matching according to the locally saved correspondence list, and determines that the RN1 requests to acquire the load information of the CellA, the RN2 requests to acquire the load information of the CellB, and the RN3 requests to acquire the load information of the CellC. Then, the DeNB reconfigures the three MME direct information transmission signaling to be sent to RN1, RN2, and RN3.
  • the reconfigured three MME direct information delivery signalings are substantially the same as the MME direct information delivery signaling received by the DeNB in step 405.
  • the application layer container includes the CellA identifier and the CellA load information.
  • the application layer container contains the identity of the CellB and the load information of the CellB.
  • the application layer container contains the identity of the CellC and the load information of the CellC.
  • the RIM serial number in the three reconstructed MME direct information signaling needs to be set according to the correspondence list established in step 402.
  • Step 407 After receiving the direct information transmission signaling of the MME, the RN1, the RN2, and the RN3 parse the RAN Information PDU, and obtain the load information of the cell carried in the application layer container.
  • the process is also applicable to the case where the relay node acquires some or all of the System Information. or the MBMS data channel of the heterogeneous cell, and details are not described herein again.
  • the RN can obtain all the system messages of the different system cells through the RIM, and also obtain some system messages.
  • the DeNB can aggregate the requirements of different RNs.
  • the system's BSS or RNC sends the aggregated request; after receiving the RAN Information PDU returned by the different system, it returns the system message of the part (or all) of the different system to be obtained by the different RN, that is, the different RN
  • the system message that needs to be obtained is carried in the corresponding application layer container.
  • RN1 and RN2 are relay nodes under the jurisdiction of the DeNB, and the cell under the jurisdiction of RN1 is RN_Celll, and the cell under the jurisdiction of RN2 is RN_Cell2; RN_Celll and RN_Cell2 are neighbors of CellA of the BSS or RNC.
  • RN1 needs to obtain the load information of CellA.
  • RN2 needs to obtain the system information of CellA.
  • the process includes:
  • Step 501 The RN1 and the RN2 respectively send the base station direct information transmission signaling to the DeNB, and the RN1 requests to acquire the load information of the CellA.
  • the RN2 requests to acquire the system information of the CellA.
  • the value of the RIM application layer identifier in the RIM Information Request PDU sent by the RN1 is SON Transfer; the RIM application layer identifier in the RIM Information Request PDU sent by the RN2 in the direct information transmission signaling of the RN2;
  • the value is System Information.
  • Step 502 The DeNB establishes the identifier of the different system cell to be acquired, the radio access network information to be acquired, the correspondence between the RIM sequence number and the relay node RN1 and RN2, and saves the information, and sends a direct information of the base station to the MME of the core network. Pass signaling.
  • the RN1 needs to obtain the load information of the CellA
  • the RN2 needs to obtain the system information of the CellA
  • the DeNB locally establishes the identifier of the different system cell to be acquired, and the radio access network to be acquired.
  • the correspondence between the information, the RIM serial number and the relay node is as shown in Table 3:
  • the radio RIM sequence node cell that needs to be acquired by the relay needs to obtain the target i only access network information column number
  • the DeNB sends a reconfigured base station direct information transmission signaling to the MME, where the value of the RIM application layer identifier in the RIM Information Request PDU of the signaling is SON Transfer and System Information.
  • Step 503 After receiving the direct information transmission signaling of the base station, the MME sends the signaling carrying the RIM Information Request PDU to the BSS or the RNC.
  • Step 504 After receiving the RAN Information Request PDU, the BSS or the RNC obtains the load information and system information of the CellA, and returns the signaling carrying the RAN Information PDU.
  • the application layer container in the RAN Information PDU carries the acquired CellA load information and system information in addition to the CellA identifier.
  • Step 505 The MME sends the MME direct information delivery signaling carrying the RAN Information PDU to the DeNB.
  • Step 506 After receiving the MME direct information transmission signaling, the DeNB parses the RAN Information PDU, and obtains the identifier of the different system cell that needs to be acquired: the identifier of the CellA, and the information of the radio access network that needs to be learned is: load information and System information, and RIM serial number.
  • the DeNB performs the matching according to the locally saved correspondence list, and determines that the RN1 requests to obtain the load information of the CellA, and the RN2 requests to acquire the system information of the CellA. Then, the DeNB reconstructs the two MME direct information transmission signaling and sends the information to the RN1 and the RN2.
  • the MME application layer identifier is SON Transfer
  • the application layer container contains the CellA identifier, and the CellA load information.
  • the RIM application layer identifier is System Information.
  • the application layer container contains the identity of the CellA and the system information of the CellA.
  • RN1 and RN2 are relay nodes under the jurisdiction of the DeNB, and the cell under the jurisdiction of the RN1 is RN_Celll, and the cell under the jurisdiction of the RN2 is RN_Cell2; the RN_Cel11 is the neighboring cell of the CellA of the BSS or the RNC, and the RN_Cell2 is the BSS or the RNC.
  • the neighboring cell of cell CellB; CellA and CellB belong to the same BSS or RNC.
  • RN1 In order to implement load balancing, neighboring parameter configuration, or handover between networks, RN1 needs to obtain the load information of CellA, and RN2 needs to obtain the system message of CellB.
  • the process includes:
  • Step 601 RN1 and RN2 respectively send base station direct information transmission signaling to the DeNB, and RN1 requests to acquire the load information of the CellA.
  • the RN2 requests to acquire the system information of the CellB.
  • the value of the RIM application layer identifier in the RIM Information Request PDU is SON Transfer
  • the application layer container includes the identifier of the CellA
  • the value of the RIM application layer identifier in the PDU is System Information
  • the application layer container contains the identifier of the CellB.
  • Step 602 The DeNB establishes the identifier of the different system cell to be acquired, the radio access network information to be acquired, the correspondence between the RIM sequence number and the relay nodes RN1 and RN2, and saves the information, and then sends a direct information of the base station to the MME of the core network. Pass signaling.
  • the DeNB After the DeNB receives the direct information transmission signaling of the two base stations, the RN1 needs to obtain the load information of the CellA, and the RN2 needs to obtain the system information of the CellB, and the DeNB establishes the identifier of the different system cell to be acquired locally, and the radio access network to be acquired.
  • the correspondence between the information, the RIM serial number and the relay node is as shown in Table 4:
  • the DeNB sends a reconfigured base station direct information transmission signaling to the MME, and binds the RIM application layer identifier to the application layer container in the RIM Information Request PDU of the signaling, and establishes a list (list), wherein, the RIM When the value of the application layer identifier is SON Transfer, the corresponding application layer container contains the identifier of CellA. When the value of the RIM application layer identifier is System Information, the corresponding application layer container contains the identifier of the CellB.
  • Step 603 After receiving the direct information transmission signaling of the base station, the MME sends signaling carrying the RIM Information Request PDU to the BSS or the RNC.
  • Step 604 After receiving the RAN Information Request PDU, the BSS or the RNC obtains the load information of the CellA and the system information of the CellB, and returns the signaling carrying the RAN Information PDU to the MME.
  • the RAN information PDU also has a list of the binding of the RIM application layer identifier and the application layer container.
  • the corresponding application layer container includes the identifier of the CellA and the load information of the CellA.
  • the value of the application layer identifier is System Information
  • the corresponding application layer container contains the identifier of the CellB and the system information of the CellB.
  • Step 605 The MME sends the MME direct information delivery signaling carrying the RAN Information PDU to the DeNB.
  • Step 606 After receiving the MME direct information transmission signaling, the DeNB parses the RAN Information PDU, and obtains the identifier of the different system cell that needs to be acquired: the identifier of the CellA, and the corresponding radio access network information that needs to be learned is: Information: The identifier of the different system cell to be acquired is: the identifier of the CellB, and the corresponding radio access network information that needs to be known is: system information; and the RIM serial number.
  • the DeNB performs the matching according to the locally saved correspondence list, and determines that the RN1 requests to acquire the load information of the CellA, and the RN2 requests to acquire the system information of the CellB. Then, the DeNB reconstructs the two MME direct information delivery signalings and sends the information to the RN1 and the RN2.
  • the MME application layer identifier is SON Transfer
  • the application layer container contains the CellA identifier
  • the CellA load information For RN2, the RIM application layer identifier is System Information.
  • the application layer container contains the identity of the CellB and the system information of the CellB.
  • Step 607 After receiving the direct information transmission signaling of the MME, the RN1 and the RN2 parse the RAN Information PDU to obtain the radio access network information that needs to be acquired.
  • the present invention provides a system for a relay node to acquire information of a different system radio access network, including: a different system, a BSSGP proxy, and one or more supporting BSSGP.
  • BSSGP proxy includes DeNB, which administers one or more RNs;
  • a different system configured to acquire radio access network information of one or more different system cells that one or more RNs need to acquire, and send the information to the BSSGP proxy through the RAN Information PDU;
  • a BSSGP proxy configured to read the RIM information in the RAN Information PDU, and match the locally stored RIM information with the RN; and also used to read the obtained radio access network information from the RAN Information PDU, and Sending corresponding acquired radio access network information to one or more RNs that have successfully matched;
  • the RN is configured to receive the acquired radio access network information sent by the BSSGP proxy.
  • the BSSGP proxy is also used to read the RIM information in the RAN Information PDU, including: the identifier of the different system cell to be acquired, the radio access network information to be acquired, and the RIM sequence number; and the locally saved RIM information and the RN Matches in the correspondence.
  • the RN is further configured to construct an RIM Information Request PDU that includes the identifier of the different system cell to be acquired, the wireless access network information to be acquired, and the RIM sequence number, and sends the information to the BSSGP proxy through the base station direct information transmission signaling;
  • the BSSGP proxy is further configured to construct a RIM Information according to the identifier of the different system cell that needs to be acquired sent by one or more RNs, the radio access network information that needs to be acquired, and the RIM serial number.
  • the Request PDU is sent to the MME through a direct information transmission signaling of the base station, and the RIM Information Request PDU constructed by the BSSGP proxy is forwarded to the different system through the MME;
  • the different system is further configured to: after receiving the RIM Information Request PDU constructed by the BSSGP proxy, obtain the radio access network information of one or more different system cells that are requested by one or more RNs.
  • the BSSGP proxy is further configured to reconstruct, after receiving the RAN Information PDU sent by the different system, the identifier of the different system cell that needs to be acquired, the radio access network information that needs to be acquired, the corresponding acquired radio access network information, and the RIM.
  • the RAN Information PDU of the sequence number is sent to one or more RNs that have successfully matched through one or more MME direct message passing signaling.
  • This embodiment describes a process of acquiring radio access network information when the RN does not support the BSSGP, where the DeNB does not act as a BSSGP proxy.
  • the method includes: acquiring, by the different system, one or more RN requests to acquire one Or radio access network information of multiple different system cells, and sent to the DeNB through the RAN Information PDU;
  • the DeNB reads the request information in the RAN Information PDU, and matches the locally saved request information with the RN;
  • the DeNB sends corresponding acquired radio access network information to one or more RNs that have successfully matched.
  • the process is substantially the same as the foregoing process in FIG. 2 and the first to fourth embodiments.
  • the RN does not send the base station direct information transmission signaling to the DeNB, but sends a request to acquire the radio access network information signaling, including the request.
  • Information the identifier of the different system cell to be acquired and the radio access network information to be acquired; optionally, the same sequence as the RIM serial number number.
  • the DeNB establishes a correspondence between the request information and the RN locally.
  • the RN establishes an RRC connection with the DeNB after accessing the DeNB, and an S1 interface and an X2 interface exist between the DeNB and the DeNB.
  • the signaling for requesting to acquire the radio access network information may be RRC signaling, S1 signaling, or X2 signaling. make. It should be noted that, if the sequence number is not included in the request information, there is no sequence number information in the correspondence relationship list established by the DeNB.
  • the signaling may be RRC signaling, S1 signaling, or X2 signaling through the wireless access network information response signaling.
  • the radio access network information of the different system cell can be obtained.
  • the present invention provides a system for a relay node to acquire information of a different system radio access network, including: a different system, a DeNB, and one or more unsupported BSSGPs.
  • RN the DeNB governs the one or more RNs;
  • a different system configured to acquire radio access network information of one or more different system cells that one or more RNs need to acquire, and send the information to the DeNB through the RAN Information PDU;
  • the DeNB is configured to read the request information in the RAN Information PDU, and perform matching on the locally stored request information and the RN, and is further configured to read the obtained radio access network information from the RAN Information PDU, and The one or more RNs that have successfully matched send the corresponding acquired radio access network information;
  • the RN is configured to receive the acquired radio access network information sent by the DeNB.
  • the DeNB is further configured to: read the request information in the RAN Information PDU, where: the identifier of the different system cell to be acquired, the radio access network information to be acquired, and the RIM sequence number; and the locally stored request information and the RN corresponding to the RN Match in the relationship.
  • the RN is further configured to send a request for acquiring the radio access network information signaling to the DeNB, including the identifier of the different system cell that needs to be acquired, and the radio access network information that needs to be acquired; requesting to acquire the radio access network
  • the information signaling is RRC signaling, SI signaling or X2 signaling;
  • the DeNB is further configured to: according to the identifier of the different system cell that needs to be acquired sent by the one or more RNs, and the radio access network information that needs to be acquired, the RIM Information Request PDU is sent to the MME through a direct information transmission signaling of the base station, and the MME is sent through the MME. Forwarding the RIM Information Request PDU constructed by the DeNB to the different system;
  • the different system is further configured to: after receiving the RIM Information Request PDU constructed by the DeNB, obtain wireless access network information of one or more different system cells that are requested by one or more RNs.
  • the DeNB is further configured to send one or more radio access network information response signalings that include the corresponding acquired radio access network information to the one or more RNs that are successfully matched; the radio access network information response signaling is an RRC letter. Order, S1 signaling or X2 signaling.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé et à un système permettant à un nœud relais (RN, Relay Node) d'acquérir des informations de réseau d'accès radio (RAN, Radio Access Network) d'un système hétérogène. Un système hétérogène acquiert des informations de réseau RAN d'une ou plusieurs cellules du système hétérogène qu'un ou plusieurs RN demandent d'acquérir, et transmet les informations de réseau RAN acquises à un serveur proxy à protocole de service général de radiocommunication par paquets de sous-système de station de base (BSSGP, Base Station Subsystem General Packet Radio Service Protocol) par l'intermédiaire d'une unité de données de protocole (PDU, Protocol Data Unit) d'informations de réseau RAN ; le serveur proxy à protocole BSSGP lit les informations de gestion des informations de réseau RAN (RIM, RAN Information Management) dans l'unité PDU d'informations de réseau RAN et effectue une correspondance selon une relation correspondante préservée localement entre les informations de gestion RIM et les RN ; et le serveur proxy à protocole BSSGP transmet les informations de réseau RAN acquises correspondantes à un ou plusieurs RN mis en correspondance avec succès. Avec la présente invention, les informations de réseau RAN renvoyées par le système hétérogène peuvent être acheminées correctement au RN correspondant.
PCT/CN2010/077543 2010-09-30 2010-09-30 Procédé et système permettant à un nœud relais d'acquérir des informations de réseau d'accès radio d'un système hétérogène WO2012040939A1 (fr)

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