WO2008154836A1 - Dispositif de coordination de réseau différent, réseau radio et équipement utilisateur, procédé d'adhésion - Google Patents

Dispositif de coordination de réseau différent, réseau radio et équipement utilisateur, procédé d'adhésion Download PDF

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Publication number
WO2008154836A1
WO2008154836A1 PCT/CN2008/071201 CN2008071201W WO2008154836A1 WO 2008154836 A1 WO2008154836 A1 WO 2008154836A1 CN 2008071201 W CN2008071201 W CN 2008071201W WO 2008154836 A1 WO2008154836 A1 WO 2008154836A1
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WIPO (PCT)
Prior art keywords
communication system
wireless communication
user equipment
entity
authentication
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PCT/CN2008/071201
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English (en)
Chinese (zh)
Inventor
Yan Zhou
Weihua Hu
Liping Yuan
Wenfu Wu
Wenlin Ye
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008154836A1 publication Critical patent/WO2008154836A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • the present invention relates to the field of wireless communication technologies, and more particularly, to a different network coordination device, a wireless network, and a user equipment switching and attachment method.
  • international standardization organizations include:
  • 3GPP The 3rd Generation Project Partnership, 3GPP2, The 3rd Generation Project Partnership 2, Worldwide Interoperability for Microwave Access (WiMAX), and Wireless Standard organization such as WLAN (Wireless Local Access Network), each of which has its own wireless communication standard defined and defined, how to achieve inter-communication between the different standard wireless communication systems It is a hot spot in the industry.
  • SAE System Architecture Evolution
  • WLAN Wireless Local Access Network
  • SAE System Architecture Evolution
  • the system accesses the 3GPP core network, and can also access the 3GPP network through a non-3GPP access system (eg, WiMAX, WLAN, etc.).
  • the core network of SAE mainly includes three logical function modules: MME (Mobility Management Entity), Serving Gateway (S-GW, Serving Gateway) and Packet Data Network Gateway (P-GW, PDN Gateway), among which MME It is a mobility management module responsible for mobility management of control planes, including MM Context and mobility state management, assigning user temporary identity, security functions, and session management; S-GW is a long-term evolution of 2G/3G and 3GPP access networks.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • the anchor point between the access systems, and the visited S-GW in the roaming scenario can bear the anchor points of multiple access systems, including the handover between 3GPP and non-3GPP, and the S-GW is also the user plane entity, responsible for In the idle state, the paging is initiated for the downlink data, and the management saves the IP bearer parameters and the routing information in the network.
  • the P-GW acts as a user plane anchor between different access systems and interfaces with the PCRF.
  • Non-3GPP access system can be connected Into the P-GW, but in the case of roaming, the logical function division of each entity within the SAE network may be adjusted with the progress of the SAE (now renamed EPC: Evolved Packet Core) protocol.
  • a key problem in the implementation of inclusive interworking between different standards of different network systems is to implement user equipment switching between different standards of different network systems.
  • Predetermining the target cell before handover, pre-authentication, pre-negotiating quality of service, pre-established bearer is It can reduce the key link of service interruption time in the handover process and can effectively improve the success rate of handover.
  • the industry proposes an interface for adding interfaces to the MME and the non-3GPP system of the 3GPP system, that is, the MME has all relevant bearer and security context information, and the MME can obtain information about the radio access network (RAN). It is delivered to the user equipment through the source side.
  • non-3GPP systems can also provide peer-to-peer information to the MME.
  • the service interruption time can be significantly reduced through the interface between the MME and the non-3GPP system, but the scheme of increasing the interface between the MME and the Non-3GPP system affects all MMEs and non-3GPP control entities, and requires 3GPP and non-3GPP network signaling. Tight coupling leads to independent definition and development of different access technology standards.
  • a wireless network includes a wireless communication system of different standards, and further includes:
  • the different network coordination device is used for coordination processing of the user equipment to switch between the different standard wireless communication systems or user equipment multiple attachment coordination processing.
  • a different network coordination device includes:
  • a handover coordination processing unit is used for switching coordination processing of user equipment switching between different standard wireless communication systems.
  • a user equipment of the embodiment of the present invention includes a handover processing unit, where the handover processing unit includes:
  • the switching target generating unit is configured to scan the neighboring area of the different network system and perform measurement to determine the system of the different network system Change target
  • a handover request message encapsulating unit configured to encapsulate the switched alien network system target cell and/or the alien network system authentication data information, and/or encapsulate the alien network system auxiliary information required to complete the handover into the handover request message;
  • a sending unit configured to send the handover request message to the source wireless communication system.
  • a different network coordination device includes:
  • a multi-attach coordination processing unit is used for multi-attachment coordination processing when the user equipment is attached.
  • a method for switching a user equipment includes:
  • the alien network coordinating entity learns the target cell identity of the target wireless communication system and the target wireless communication system according to the target cell identifier in the handover request message sent by the source wireless communication system control entity; the different network coordination entity according to the user equipment in the target wireless communication system
  • the authentication data directly or through the control entity of the target wireless communication system initiates authentication to the authentication server; and after the authentication is passed, sends the target cell identifier carrying the signaling conversion and the new profile to the target wireless communication system control entity.
  • Right/bearer context switching request message
  • the different network coordination entity receives the handover response message returned by the target wireless communication system control entity; the different network coordination entity performs bearer conversion negotiation, and sends a signaling converted handover response to the source wireless communication system control entity, so that the source wireless communication system controls the entity to control The user equipment switches to the target wireless communication system.
  • a method for switching a user equipment includes:
  • the alien network coordinating entity learns the target cell identity of the target wireless communication system and the target wireless communication system according to the target cell identifier in the handover request message sent by the source wireless communication system control entity; the different network coordination entity according to the user equipment in the target wireless communication system
  • the authentication data direct or signaling conversion, initiates authentication to the authentication server through the control entity of the target wireless communication system; and after the authentication is passed, the signaling conversion sends the target cell identifier and the new target to the target wireless communication system control entity.
  • the target wireless communication system control entity establishes a bearer of the user equipment in the target wireless communication system; the different network coordination entity receives the handover response message returned by the target wireless communication system control entity; the different network coordination entity sends the signaling conversion to the source wireless communication system control entity
  • the handover response message causes the source wireless communication system control entity to control the user equipment to switch to the target wireless communication system.
  • a method for attaching a user equipment includes:
  • the user equipment initiates an attach request to the wireless communication system control entity to be attached;
  • the wireless communication system control entity to be attached detects that the user equipment is a multi-mode terminal or a multi-access user, and notifies the different network coordination entity to perform multiple-attach authentication;
  • the heterogeneous network coordinating entity initiates multi-attachment authentication to the authentication server according to the user authentication parameter. If the multi-attachment authentication is passed, the alien network coordinating entity notifies the control system of the to-be-attached communication system to pass the authentication;
  • the communication system control entity to be attached controls to complete the subsequent attachment process.
  • a method for attaching a user equipment includes:
  • the user equipment initiates an attach request to the communication system control entity to be attached;
  • the communication system control entity to be attached detects that the user equipment is a multi-mode terminal or a multi-access user, and notifies the different network coordination entity to perform authentication. If the authentication is passed, the different network coordination entity checks whether the user equipment is attached to other communication systems. And, when the check result is YES, acquiring data anchor information and/or original service information of the original attached communication system to the originally attached communication system control entity;
  • the communication system control entity to be attached establishes a data channel according to the acquired data anchor information and/or the original service information, and continues to complete the attach.
  • the coordination processing of the handover by a different network coordination device or the coordinated processing of the multiple attachment of the user equipment can achieve different standards of the user equipment. Switching or attaching between different network communication systems, and maintaining independent development of different standards of different network communication systems, and maintaining service continuity through coordination of different network coordination devices, optimizing handover performance, and resolving frequent attachment of user equipments between networks Problems that cannot be known to each other, and changes to user equipment and network communication systems are small.
  • FIG. 1 is a schematic diagram of a specific embodiment of a wireless network according to the present invention.
  • FIG. 2 is a schematic diagram of an interface of a specific embodiment of a different network communication entity and a different standard communication system according to the present invention
  • FIG. 3 is a schematic diagram of another embodiment of the different network coordination entity and different standard communication systems of the present invention
  • FIG. 4 is a message processing flowchart of a first embodiment of the user equipment switching method of the present invention
  • FIG. 5 is a message processing flowchart of a second embodiment of the user equipment switching method of the present invention
  • a message processing flow chart
  • 7 is a schematic structural diagram of a first embodiment of a different network coordination apparatus according to the present invention
  • FIG. 8 is a schematic structural diagram of a specific embodiment of the handover coordination processing unit shown in FIG. 7.
  • FIG. 9 is a specific embodiment of a user equipment according to the present invention.
  • FIG. 10 is a schematic structural view of a second embodiment of the multi-network coordination device of the present invention
  • FIG. 11 is a schematic structural view of a specific embodiment of the multi-attach coordination processing unit shown in FIG.
  • the wireless network includes different standard wireless communication systems, and the different standard wireless communication systems may be a 3GPP communication system, a 3GPP2 communication system, and a WiMAX communication.
  • System and/or WLAN communication system, and other forms of wireless communication system in this embodiment, a first standard wireless communication system and a second standard wireless communication system, between the different standard wireless communication systems (for example, The first standard wireless communication system 1 and the second standard wireless communication system 2 may include independent functional entities: the different network coordination device 12, and the different network coordination device 12 in the embodiment may be used for the user equipment in the different Coordination processing of standard wireless communication system switching or multi-attachment coordination processing of user equipment.
  • the external network switching between the different standard wireless communication systems of the user equipment and the cross-attachment of the different network can be performed, and the different standards of the different network system can be independently developed, and Switching to optimization issues and optimizing the problem of frequent inter-network attachments that cannot interact.
  • the following different network coordination devices may also be commensurate with the different network coordination entities.
  • the alien network switching is that the user equipment switches between different standard wireless communication systems. It should be understood that the description is only for clear description. It is not intended to limit the scope of the claims of the invention.
  • the physical form of the different network coordination entity may also be located or integrated on a certain functional entity of a standard wireless communication system, for example, the different network coordination entity may be: located or integrated in the 3GPP communication system.
  • a mobility management entity, or a service GPRS support node, or a decision point of an access service network gateway of the WiMAX communication system, or a control entity access gateway in the 3GPP2 communication system or an interworking control in the WLAN communication system Entities, and other forms that can be directly derived from them, are not described here.
  • the different network coordination entity may be adapted to different standard communication systems.
  • Interface definition for example, the S10, S11 interface can be provided on the communication system side of the 3GPP standard, the R4 or R7 interface can be provided on the WiMAX communication system side, and the correspondingly defined interface of the 3GPP2 can be provided on the 3GPP2 communication system side, and the WLAN communication system side can also be provided. Provides an interface to the WLAN-related control entity.
  • the different network coordination entity communicates with the ASN GW through the R4 interface (when the alien network coordination entity is similar to the authentication entity of an independent ASN GW), or Through the R7 interface (when the alien network coordination entity is located in a DP entity of an ASN GW).
  • the S-GW and the ASN GW use the R4 interface to communicate with each other. Or use the interface defined by SAE to communicate (the new interface name defined by S2 or SAE).
  • the S-GW performs bearer conversion before and after the handover, and forwards the data to the ASN GW.
  • the inter-network coordinating entity and the S-GW communicate with each other through the S11 interface or the R4 interface (or the newly defined interface).
  • the S-GW and the ASN GW are jointly constructed, and the different network coordination entity can communicate with the S-GW/ASN GW through the S11 or R4 or R7 interface, or can be connected through the R4 interface or the R7 interface.
  • the other ASNs communicate with each other through the S10 interface.
  • the advantage of the S-GW/ASN GW construction is to save the tunnel between the S-GW and the ASN GW (when the ASN GW accesses the P-GW through the S-GW), or to save the S-GW to the ASN GW's mobile Internet protocol.
  • the different network coordination entity may address a required ID or IP address in various communication systems involved in the application, and the IP address or addressing mode (ID of the different network coordination entity) Or equivalent addressing mode) can be configured by the relevant network element (eg, MME/ASN GW and similar entities). If the related network element finds that there is a different network coordination entity, the different network coordination entity can perform the external network handover. Otherwise, the other network can be switched or the terminal initiates the new network re-access; if the different network coordination entity fails, the relevant network element The NE can directly return to the switch failure.
  • the relevant network element eg, MME/ASN GW and similar entities.
  • the following describes a method for implementing user equipment external network handover by using the different network coordination entity in a specific network environment.
  • a process of processing an alien network switching message that is constructed by a non-3GPP gateway represented by an S-GW and an ASN GW is given.
  • the non-3GPP gateway includes the packet domain gateway ASN GW in the WiMAX network (the ASN GW and the BS are unified to each other), and the packet domain gateway AGW in the 3GPP2 network (Part of the process in 3GPP2 is completed by the BS, with a small difference in function distribution and flow, but does not affect the essence of the present invention), the packet domain gateway ePDG in the WLAN.
  • the label is followed by s to indicate the interface in the SAE, and the label followed by r to indicate the interface in WiMAX.
  • the eNodeB can refer to the BS or the radio network controller.
  • ASN GW can refer to ASN GW+BS in the form of WiMAX ASN integration
  • MME can refer to SGSN
  • P-GW can refer to GGSN
  • S-GW can refer to some functions of SGSN or GGSN, and specifically switch
  • the message processing flow is as follows:
  • the UE performs a handover request message, where the handover request message carries the different radio communication system target handover cell information, and/or the terminal different system authentication parameter and/or the different wireless communication system auxiliary information required to complete the handover.
  • the eNodeB determines that the target cell of the different wireless communication system is the handover target, and sends a handover request message to the MME, where the handover request message carries the target handover cell information of the different wireless communication system, and/or the terminal different system authentication parameter,
  • the handover request message may utilize an existing message of the original interface, such as a Relocation Request message or other alternative message.
  • the user does not need to control the entity to the source wireless communication system (described in this embodiment).
  • the source wireless communication system control entity MME further reports the parameter, and the UE in the S101 and S102 can directly report the handover request message to the MME.
  • the MME finds that the target cell does not belong to the wireless communication system, and sends a handover request message to the alien network coordination entity, where the message carries the different system target cell, the terminal different system authentication parameter, the bearer context, and the original content of the handover indication message.
  • the handover request message may be an existing message of the original interface, such as a Forward Relocation Request message or other alternative message;
  • the alien network coordination entity has the following processing in this step:
  • the target wireless communication system is obtained, and the target wireless communication system control entity address is obtained, for example, the ASN GW address of the WiMAX is parsed.
  • the resolution process can follow the domain name resolution system (DNS) resolution or other peer-to-peer resolution processes already specified by the target communication system.
  • DNS domain name resolution system
  • the handover target cell can be obtained by the following optional methods:
  • Mode 1 The UE belongs to a dual-mode or multi-mode terminal, searches for a different network by itself, and reports the target cell of the different wireless communication system.
  • the current wireless communication system makes a handover decision according to the candidate cell in the wireless communication system, if there is no suitable candidate cell in the wireless communication system, or the handover algorithm and the handover rule determine the enablement
  • the target cell of the line communication system, or the candidate cell reported by the UE is a priority criterion, and the different system is authenticated by the different network coordination entity, or the remote network coordination entity is used to seek the control network element address of the different system cell before the handover. right.
  • the UE provides a target cell for a different system handover.
  • the network side changes very little, the UE passes to the eNodeB, passes to the MME, passes to the Sig Border, or the UE passes to the BS, passes to the ASN GW, passes to the Sig Border, or the UE passes to the BS, and passes to the Sig Border through only one letter.
  • the meta-transmission to the alien network coordination entity may be carried in the handover request message or piggybacked in other messages.
  • Mode 2 The MME or the eNodeB obtains and provides a neighboring cell of the different wireless communication system through configuration, or the ASN GW or the BS obtains and provides a neighboring cell of the different wireless communication system through configuration, and assists in performing network search. Or a plurality of measurement information is integrated, and the selection of the handover target cell is performed in the radio access network.
  • Manner 3 The network-side independent topology management entity sends the neighboring cell of the different wireless communication system to the current system through the current wireless communication system according to the physical location information of the terminal and the mapping relationship between the network topology and the physical location.
  • the auxiliary terminal performs network search selection.
  • the alien network coordinating entity obtains the authentication parameter of the UE in the target system according to the information conversion of the UE in the source wireless communication system, and when some parameters are missing, the configuration data may be used according to the terms of the inter-network interworking protocol. Make regular additions. When the UE has reported the different system authentication parameters, the parameters reported by the UE are taken. When the alien network coordination entity directly assumes the function of the authentication entity, the alien network coordination entity requests authentication from the Home Subscriber Server (HSS, Home Subscriber Server) or Authentication, Authorization, Accounting (AAA), And obtaining the subscription data in the target communication system, for example, through the existing protocol such as the Diameter protocol and the Mobile Application Part (MAP) protocol, the cell supplementary expansion is completed. I won't go into details here.
  • HSS Home Subscriber Server
  • AAA Authentication, Authorization, Accounting
  • the signal may be converted into a message of the target wireless communication system according to the message of the source side network, and the target communication system control entity address (ASN GW or vice MME) is requested for authentication. .
  • ASN GW or vice MME target communication system control entity address
  • the foreign network coordination entity needs to perform conversion processing on the bearer.
  • the original bearer may not be preserved one by one during the handover process.
  • the direct corresponding mode can be used.
  • the coarse bearer mode for the UE or the IP address of the UE may be used after the handover, that is, The entire UE or UE IP address uses a coarse bearer in the target wireless communication system, and no more detailed QoS-based bearers are distinguished.
  • the target wireless communication system can independently establish a new bearer in the new system, or return a failure message.
  • the alien network coordinating entity communicates with the target control entity using the interface of the target wireless communication system after the target control entity addresses, authenticates, and bears the transition.
  • the alien network coordinating entity communicates with the WiMAX ASN GW by using the R4 or R7 interface, and expresses a handover request message (the original interface already has this message, and an instance such as MOB-HO-IND or other alternative message) is carried in the target wireless communication.
  • step S104 if there is no authentication and subscription data in step S104, then this step requires authentication and subscription data, and the subscription data may include the P-GW address and other data defined by the protocol.
  • the target control entity acquires a policy and charging control (PCC) rule, for example, there are multiple possible modes in the current standard, and may adopt a P-GW, or an S-GW, or a visited policy and a charging control rule. Function (vPCRF) was obtained.
  • PCC policy and charging control
  • vPCRF Visited policy and charging control Function
  • the target control entity determines whether to accept the handover request, and returns a system handover response message to the alien network coordination entity.
  • the original interface message may be used to return a handover response message, such as R4 HO-Cnf or other alternative message;
  • the heterogeneous network coordinating entity determines, if it is considered that the bearer conversion needs to be performed, sends a command requesting bearer conversion to the S-GW, and carries the target control entity to determine the assigned user plane switching data forwarding channel identifier.
  • the S-GW receives the bearer switching command of the different network coordinating entity, and performs the establishment of the bearer context of the target radio communication system side related to the UE on the S-GW and the correspondence relationship with the bearer context of the source system, including uplink and downlink forwarding.
  • the handover data forwarding bearer required for bearer and lossless handover is returned, and then the handover data forwarding channel identifier assigned by the S-GW is returned.
  • the protocol of the switching source wireless communication system uses the protocol of the switching source wireless communication system to forward the handover response message of the target wireless communication system to the MME, and the response message may carry the switching data forwarding channel identifier allocated by the S-GW, and the original interface may be specifically used. There are already messages, such as Forward Relocation Response or other alternative messages.
  • the MME sends a handover command to the eNodeB, and the MME-eNodeB interface can use the Relocation Command or other alternative message to send a handover command.
  • the eNodeB can initiate a handover data forwarding process.
  • the eNodeB sends a handover command, and may use the original interface to send a message, for example, the eNodeB sends a handover command to notify the UE by using a Handover Command or other alternative message.
  • S113s, S113r Step Sills triggers the switching data forwarding process, the eNodeB forwards the data to the S-GW (using the source side communication interface protocol), and the S-GW forwards it to the ASN GW (using the target side communication interface protocol).
  • the handover completion indication is forwarded from the target side new network to the source side MME through the alien network coordination entity; specifically, the existing message forwarding of the original interface may be used, for example, a WiMAX side instance such as R4 HO-Complete or other alternative message forwarding, The 3GPP side instance is forwarded by other alternative messages such as the Forward Relocation Complete message.
  • the existing message forwarding of the original interface may be used, for example, a WiMAX side instance such as R4 HO-Complete or other alternative message forwarding
  • the 3GPP side instance is forwarded by other alternative messages such as the Forward Relocation Complete message.
  • S117r, S118 The user plane specified by the target control entity that is switched to, sends a tunnel update message to the S-GW to switch the uplink and downlink data channel to the target side (optional update P-GW, mainly according to whether the P-GW needs to know).
  • the user bearer processing may be performed, and the handover bearer pre-establishment may be performed before the target radio communication system control entity returns the handover response message to the alien network coordination entity in step S107r; and the subsequent S108r or S108s post bearer processing related step,
  • the different network coordination entity assists in establishing a bearer conversion negotiation process such as a handover data forwarding channel; when the source wireless communication system control entity sends a handover command to the user equipment, and instructs the related entity to forward the switched data packet by switching the data forwarding channel, etc., in the source wireless communication After the system releases the data channel according to the original process, the switching process can be completed.
  • the signaling system differs between the wireless communication system before handover and the wireless communication system after handover.
  • the signaling conversion is not limited to the corresponding conversion of the foregoing signaling, that is, the signaling conversion may be adjusted according to the new scenario.
  • the different network coordination entity may increase the function to implement state transition, or directly return the handover failure. Abandon the alien network switching process.
  • the process is similar when the S-GW and the ASN GW are co-constructed, and is not separately stated, and the above process is The normal handover process is representative.
  • the principle of abnormal flow such as handover failure is similar.
  • the alien network coordination entity can perform signaling conversion of the abnormal process by means of the original system.
  • this embodiment is a handover message processing procedure for the handover target side system to carry a new handover and does not pass the S-GW conversion.
  • the main change of this embodiment is in step S106r.
  • the S106A step is added: the target control entity establishes a new bearer with the S-GW and the P-GW, and the S-GW may be different. Steps of removing the bearer conversion from the remote network coordination entity to the S-GW in steps S108 and S109, and removing the step of forwarding the data in step S113.
  • the actions and parameters in the remaining steps are slightly changed, and the related content of the bearer conversion and the parameters related to the data forwarding channel are switched.
  • the UE reports a handover request message, where the handover request message carries a different radio communication system target handover cell information, and/or a terminal different system authentication parameter, and/or an alien network system auxiliary information required to complete the handover.
  • the eNodeB determines that the target cell of the different wireless communication system is the handover target, and sends a handover request message to the MME, where the handover request message carries the target handover cell information of the different wireless communication system, and/or the terminal different system authentication parameter,
  • the handover request message may utilize an existing message of the original interface, such as a Relocation Request message or other alternative message.
  • the user does not need to control the entity to the source wireless communication system (described in this embodiment).
  • the source wireless communication system control entity MME further reports the parameter, and the UE in the S101 and S102 can directly report the handover request message to the MME.
  • the MME finds that the target cell does not belong to the wireless communication system, and sends a handover request message to the alien network coordination entity, where the message carries the different system target cell, the terminal different system authentication parameter, the bearer context, and the original content of the handover indication message.
  • the handover request message may be an existing message of the original interface, such as a Forward Relocation Request message or other alternative message;
  • the alien network coordination entity has the following work in this step:
  • the target wireless communication system is obtained, and the target wireless communication system control entity address is obtained, for example, the ASN GW address of the WiMAX is parsed.
  • the resolution process can follow the DNS resolutions specified by the target wireless communication system or other processes that perform peer-to-peer resolution.
  • the handover target cell can be obtained by the following optional methods:
  • Mode 1 The UE belongs to a dual-mode or multi-mode terminal, searches for a different network by itself, and reports the target cell of the different wireless communication system.
  • the current wireless communication system makes a handover decision according to the candidate cell in the system, if there is no suitable candidate cell in the wireless communication system, or the handover algorithm and the handover rule determine to enable the target cell of the different system, or consider that the candidate cell reported by the UE is a priority criterion.
  • the different network authentication entity performs the different system authentication, or the foreign network coordination entity seeks the pre-authentication right before the handover of the control network element address of the different wireless communication system cell.
  • the UE provides a target cell for a different system handover.
  • the network side changes very little, the UE passes to the eNodeB, passes to the MME, passes to the alien network coordination entity, or the UE passes to the BS, passes to the ASN GW, passes to the alien network coordination entity, or the UE passes to the BS, and passes to the different network.
  • the coordinating entity is transparently transmitted to the alien network coordinating entity through one cell, and can be carried in the handover request message or piggybacked in other messages.
  • Mode 2 The MME or the eNodeB obtains and provides the neighboring cell of the different system through configuration, or the ASN GW or the BS obtains and provides the neighboring cell of the different system through the configuration, assists the network search, and assists the UE to perform the handover decision.
  • Mode 3 The network-side independent topology management entity sends a neighboring cell of the different wireless communication system to the current wireless communication system according to the physical location information of the terminal and the mapping relationship between the network topology and the physical location.
  • the auxiliary terminal performs network search selection.
  • the alien network coordinating entity obtains the authentication parameter of the UE in the target wireless communication system according to the information conversion of the UE in the source wireless communication system, and when some parameters are missing, may be used according to the terms of the different network interworking protocol. Configure data for regular supplementation. When the UE has reported the different system authentication parameters, the parameters reported by the UE are taken. When the alien network coordination entity directly assumes the function of the authentication entity, the alien network coordination entity requests authentication from the HSS or AAA, and acquires subscription data in the target wireless communication system, for example, through existing protocols such as Diameter protocol and MAP protocol. The supplemental extension is complete. I won't go into details here.
  • the signal may be converted into a message of the target wireless communication system according to the message of the source side network, and the target wireless communication system is requested to control the entity address (ASN GW or vice MME) for authentication. right.
  • the alien network coordination entity uses the interface of the target wireless communication system to communicate with the target control entity.
  • the alien network coordinating entity communicates with the WiMAX ASN GW by using the R4 or R7 interface, and expresses a handover request message (the original interface already has this message, and an instance such as MOB HO-IND or other alternative message) is carried in the target wireless communication system.
  • the target control entity acquires a PCC rule, for example, obtained by using a P-GW, or an S-GW, or a vPCRF.
  • S106A The target control entity establishes a new bearer with the S-GW and the P-GW, and the S-GW may be different, and the P-GW may retain the source side bearer.
  • S107r The target control entity determines whether to accept the handover indication message, and returns a system handover response to the alien network coordination entity, for example, R4 HO_Cnf or other alternative message return handover response message.
  • the heterogeneous network coordinating entity uses the protocol of the switching source wireless communication system to forward the handover response message of the target wireless communication system to the MME, and may use the original interface to have an existing message, such as a Forward Relocation Response or other alternative message.
  • the MME sends a handover command to the eNodeB.
  • the MME-eNodeB interface can use the Relocation Command or other alternative messages.
  • the eNodeB sends a handover command, and may use the original interface to have a message, for example, the eNodeB notifies the UE by using a Handover Command or other alternative message.
  • the handover completion indication is forwarded from the target side new network to the source side MME through the different network coordination entity; specifically, the existing message forwarding of the original interface may be utilized, for example, a WiMAX side instance such as R4 HO-Complete or other alternative message forwarding, The 3GPP side instance is forwarded by other alternative messages such as the Forward Relocation Complete message.
  • the existing message forwarding of the original interface may be utilized, for example, a WiMAX side instance such as R4 HO-Complete or other alternative message forwarding
  • the 3GPP side instance is forwarded by other alternative messages such as the Forward Relocation Complete message.
  • the source side wireless communication system releases the data channel according to the original process, and completes the handover process.
  • the handover is reversed, it is switched to LTE by WiMAX, or similar applications can be used in other systems.
  • the above process is represented by the normal handover procedure, and the principle of abnormal flow such as handover failure is similar.
  • the entity can perform signaling conversion of the abnormal process by means of the original system.
  • the MME may migrate the authenticity to the alien network coordination entity when the dual mode terminal or the terminal indicates that the multiple access user is attached, and may directly coordinate the entity from the different network in the subsequent process. Obtain contract data, or obtain information from the alien network coordination entity whether the data channel needs to be established to recover the service.
  • the address of the alien network coordination entity is configured.
  • the label is followed by s to indicate the interface in the SAE, and the label is followed by r to indicate the interface in the WiMAX.
  • the eNodeB may refer to the BS or the RNC
  • the ASN GW may refer to the ASN GW+BS in the form of a WiMAX ASN
  • the MME may refer to the SGSN
  • the P-GW may refer to the GGSN
  • the S-GW may refer to the SGSN/GGSN. Part of the function.
  • S201s, S202s The UE attaches from the LTE, reports itself as a multi-mode terminal, or reports itself as a multi-access user (indicator, etc.).
  • S203s If the MME knows that the user is a multi-mode terminal or a multi-access user, the MME directly informs the alien network coordination entity to perform multi-attachment authentication, and simultaneously transmits the parameters required for authentication of the UE to the alien network coordination entity.
  • the alien network coordinating entity requests authentication from the authentication server (for example, HSS or AAA in this embodiment) to obtain multi-system subscription data.
  • the authentication server for example, HSS or AAA in this embodiment
  • the communication system control entity to be attached is controlled by the MME to complete the subsequent attach procedure, and may indicate to the S-GW user that multiple networks are involved, and multiple network anchor points are required.
  • S207r When the user accesses the ASN GW from WiMAX, it reports itself as a multi-mode terminal, or reports itself as a multi-access user (indicator, etc.).
  • S208r When the ASN GW finds that the user is a multi-network user, it requests the context from the different network coordination entity, and simultaneously transmits the parameters required for the authentication of the UE to the different network coordination entity, and notifies the different network coordination entity to perform the authentication.
  • the alien network coordinating entity can locally determine whether WiMAX authentication is passed. If it is not possible to determine locally, request authentication from HSS/AAA.
  • the different network coordination entity determines whether the user has been attached to other networks, and obtains data anchor information and/or original service information of the original attached communication system to the originally attached wireless communication system control entity when the check result is yes. For example, if it is found that the other network is attached, the request is sent to the corresponding network control entity (MME in this embodiment), and the P-GW address, and/or the S-GW address are inquired, and there is information such as the service to be established. . The MME gives a response.
  • the foreign network coordination entity can also do some data auxiliary records.
  • the alien network coordination entity passes the authentication, and notifies the ASN GW of the authentication context.
  • the ASN GW acquires the PCC from the P-GW and establishes a data channel (where the S-GW can participate in the PCC acquisition process). Otherwise, only the default bearer is established according to the normal attach procedure.
  • the alien network coordination entity can refresh the current wireless communication system information to the HSS or AAA. Access to the HSS can be reduced with the operator's permission by using multiple refresh merges, or only refreshing different, or timing. In addition, the alien network coordination entity can do key update work according to the security framework.
  • the alien network coordination entity is described in detail below.
  • a different network coordination device mainly includes:
  • the handover coordination processing unit 121 is mainly used for handover coordination processing of user equipment switching between different standard wireless communication systems, where the different standard wireless communication systems include a 3GPP communication system, a 3GPP2 communication system, WiMAX communication system and/or WLAN communication system, etc., will not be described here.
  • the handover coordination processing unit 121 may include:
  • the source wireless communication system message receiving/transmitting unit 1211 is configured to receive a handover request message sent by the source wireless communication system control entity or send a handover response message to the source wireless communication system, and is further configured to send the handover completion to the source wireless communication system.
  • the addressing unit 1212 is configured to learn, according to the target cell identifier in the source wireless communication system handover request message received by the source wireless communication system message receiving/transmitting unit 1211, the target wireless communication system and the control entity address of the target wireless communication system. ;
  • the authentication coordination unit 1213 is configured to obtain authentication data of the user equipment in the target wireless communication system, and initiate authentication to the authentication server directly or through a control entity of the target wireless communication system;
  • the authentication coordination unit 1213 may include:
  • the authentication data conversion unit 1213a is configured to convert the subscription data of the source wireless communication system user equipment into the subscription data of the target wireless communication system;
  • the authentication entity unit 1213b is configured to initiate authentication to the authentication server directly according to the user equipment in the target wireless communication system to sign the data on behalf of the user equipment;
  • the authentication indication unit 1213c is configured to forward, to the target wireless communication system control entity, the subscription data of the user equipment in the target wireless communication system, and the control entity of the target wireless communication system according to the subscription data of the user equipment in the target wireless communication system
  • the right server initiates authentication.
  • the target wireless communication system message receiving/transmitting unit 1214 is configured to send, to the target wireless communication system control entity, a handover request message carrying the target cell identifier and the new authentication/bearer context; or receiving the handover response sent by the target wireless communication system control entity.
  • the message in addition, is further configured to receive a handover complete message sent by the target wireless communication system;
  • the signaling conversion unit 1215 is configured to convert the message processing signaling between the source wireless communication system and the target wireless communication system, where the handover response message or the handover complete message sent to the source wireless communication system is mainly required to be in accordance with the source end before being sent.
  • the signaling protocol conversion, and the handover request message sent to the target wireless communication system are also converted according to the signaling protocol of the target wireless communication system before being transmitted, and Signaling protocol conversion involving bearer processing or other signaling protocol conversions that may be involved.
  • the bearer after the handover can be converted by the bearer before the bearer or by the new bearer.
  • the heterogeneous network coordinating device can also coordinate accordingly.
  • the different network coordination device may further include:
  • the bearer conversion coordination processing unit 1216 is configured to perform handover conversion processing of the user equipment from the source wireless communication system to the target wireless communication system.
  • the bearer conversion coordination processing unit 1216 may include:
  • the bearer information conversion processing unit 1216a is configured to, after receiving the handover request message of the source wireless communication system control entity, convert the bearer information required in the target wireless communication system according to the bearer information established for the user in the source wireless communication system. ;
  • the bearer association establishment processing unit 1216b is configured to: when the target wireless communication system control entity pre-establishes the bearer according to the bearer information, returns a handover response message that accepts the handover, notifies the data anchor point shared by the source and the target wireless communication system, establishes a source, The association of the target wireless communication system for the same user bearer; the handover data forwarding channel establishment coordination unit 1216c is configured to coordinate with the source wireless communication system related entity according to the data forwarding channel information carried by the target wireless communication system control entity handover response message to establish a source A switching data forwarding channel between the wireless communication system and the target wireless communication system.
  • a user equipment in this embodiment includes a handover processing unit 13, and the handover processing unit 13 may include :
  • the switching target generating unit 131 is mainly used for scanning the neighboring area of the different network system and performing measurement to determine the switching target of the different network system;
  • the handover request message encapsulating unit 132 is configured to use the handover target message cell and/or the alien network system authentication data information in the embodiment, and/or to complete the handover.
  • the auxiliary network information of the different network system needs to be encapsulated into the handover request message;
  • the handover request message sending unit 133 in the embodiment, is configured to send the handover request message to the source wireless communication system.
  • another embodiment of the different network coordination device which mainly includes:
  • the multi-adhesion coordination processing unit 122 is mainly used for the attachment and coordination processing when the user equipment is attached.
  • the multiple attach coordination processing unit 122 may include: an authentication processing unit 1221, configured to perform an authentication process of user equipment multiple attachment interaction with the authentication server, that is, according to the wireless to be attached.
  • the authentication parameter sent by the communication system initiates authentication to the authentication server, and if the authentication is passed, the multi-attached subscription data can be obtained;
  • the authentication result notification unit 1222 is configured to notify the communication system control entity that the user equipment is to be attached to the user equipment multiple attachment authentication processing result.
  • the multiple attachment coordination processing unit 122 in this embodiment may include the following independent functional entities:
  • the checking processing unit 1223 is configured to check whether the user equipment is attached in another communication system, and obtain the data anchor information and/or the original service information of the original attached communication system to the originally attached communication system control entity when the check result is yes. ;
  • the multiple attach coordination processing unit 122 in this embodiment may also include a signaling conversion processing unit 1224, which is used for message processing between different standards of the above-mentioned attach processing. Signaling conversion.

Abstract

La présente invention concerne, dans des modes de réalisation, un dispositif de coordination réseau différent, un réseau radio et un équipement utilisateur, ainsi qu'un procédé d'adhésion. Les réseaux radio comprennent différents systèmes de communication radio standard et peuvent aussi comprendre : un dispositif de coordination réseau différent pour le procédé de coordination de la commutation de l'équipement utilisateur entre les différents systèmes de communication radio standard ou le procédé de coordination multi-adhésion de l'équipement utilisateur. L'équipement utilisateur et le procédé d'adhésion des modes de réalisation pourraient fournir une capacité de commutation commode d'interconnexion, d'adhésion et d'optimisation entre les systèmes en fonction du développement indépendant de chaque standard de système d'accès et de la réduction du couplage croisé.
PCT/CN2008/071201 2007-06-19 2008-06-05 Dispositif de coordination de réseau différent, réseau radio et équipement utilisateur, procédé d'adhésion WO2008154836A1 (fr)

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CN200710028688.4 2007-06-19

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