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WO2012126290A1 - Procédé et système de gestion de mobilité d'accès local - Google Patents

Procédé et système de gestion de mobilité d'accès local Download PDF

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Publication number
WO2012126290A1
WO2012126290A1 PCT/CN2012/070969 CN2012070969W WO2012126290A1 WO 2012126290 A1 WO2012126290 A1 WO 2012126290A1 CN 2012070969 W CN2012070969 W CN 2012070969W WO 2012126290 A1 WO2012126290 A1 WO 2012126290A1
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WO
WIPO (PCT)
Prior art keywords
local access
user
access connection
connection
local
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/070969
Other languages
English (en)
Chinese (zh)
Inventor
王静
周娜
梁爽
霍玉臻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201110072228.8A external-priority patent/CN102695160B/zh
Application filed by ZTE Corp filed Critical ZTE Corp
Publication of WO2012126290A1 publication Critical patent/WO2012126290A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a local access mobility management method and system.
  • FIG. 1 shows a schematic structural diagram of an evolved packet domain system. As shown in FIG. 1, the entire EPS system is divided into two parts: a radio access network and a core network. In the core network, a Home Subscriber Server (HSS), a Mobility Management Entity (MME), a Serving GPRS Support Node (SGSN), and a policy are included.
  • HSS Home Subscriber Server
  • MME Mobility Management Entity
  • SGSN Serving GPRS Support Node
  • policy a policy
  • PCRF Policy and Charging Rule Function
  • S-GW Serving Gateway
  • PDN Gateway Packet Data Gateway
  • PDN Packet Data Network
  • the home subscriber server is the permanent storage location of the subscriber's subscription data and is located on the home network to which the subscriber subscribes.
  • the mobility management entity is the location where the user subscription data is stored in the current network, responsible for terminal-to-network non-access layer signaling management, terminal security verification function, terminal mobility management, user idle mode tracking and paging. Management functions and bearer management.
  • GPRS support node is a global mobile communication system (Global System for Mobile)
  • GSM Global System for Mobile Communications
  • GSM Enhanced Data Rate for GSM Evolution
  • GSM EDGE Radio Access Network GERAN
  • Universal Mobile Communications Universal Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • UTRAN Universal Mobile Radio Access Network
  • the service gateway is a gateway of the core network to the wireless system, and is responsible for the user plane bearer of the terminal to the core network, the data buffer in the terminal idle mode, the function of initiating the service request by the network side, the lawful interception and the packet data routing and forwarding function; It is responsible for counting the situation in which the user terminal uses the wireless network, and generates the CDR of the terminal using the wireless network, and transmits it to the charging gateway.
  • the packet data gateway is a gateway of the evolved system and the external packet data network of the system. It is connected to the Internet and the packet data network, and is responsible for the Internet Protocol (IP) address allocation, charging function, and packet filtering of the terminal. And functions such as policy control.
  • IP Internet Protocol
  • the packet data network is the operator's IP service network, which provides IP services to users through the carrier's core network.
  • the policy charging rule function entity is a server in the evolved system that provides rules for charging control, online credit control, threshold control, and quality of service (QoS) policies.
  • the radio access network is composed of an evolved base station (Evolved NodeB, eNB for short) and a 3G radio network controller (Radio Network Controllor, RNC for short). It is mainly responsible for transmitting and receiving wireless signals, and is connected through the air interface and the terminal. Radio resources, resource scheduling, and access control for the air interface.
  • Evolved NodeB evolved NodeB
  • RNC Radio Network Controllor
  • the above-mentioned service GPRS support node is an upgraded SGSN, which can support the S4 interface with the service gateway, and communicates with the mobility management unit by using GPRS Tunneling Protocol version 2 (GTPv2 for short).
  • GTPv2 GPRS Tunneling Protocol version 2
  • the Packet Switching (PS) domain network architecture is different from that of Figure 1.
  • the SGSN and the MME are connected by the Gn interface, and the GPRS Tunneling Protocol version 1 (hereinafter referred to as GTPvl) is used for interworking.
  • GTPvl GPRS Tunneling Protocol version 1
  • the SGSN cannot be connected to the serving gateway, and is connected to the gateway GPRS support node (Gateway GPRS Support Node, GGSN for short) through the Gn interface to directly access the packet data network.
  • GTPvl GPRS Tunneling Protocol version 1
  • the technical problem to be solved by the present invention is to provide a local access mobility management method and system to solve the problem that the core network determines the local access support area.
  • the present invention provides a local access mobility management method, the method comprising:
  • the core network mobility management unit determines, according to the correspondence between the local access point name and the closed user group identifier in the user subscription, whether the closed user group identifier of the wireless side network element accessed by the user is included in the local access currently activated by the user. Connecting the closed subscriber group identifier set corresponding to the access point name to determine whether the user is located in a local access mobile area supporting the local access connection. The local access connection of the user is released.
  • the mobility management unit determines that the local access connection of the user is maintained when the user is located in the local access mobile area.
  • the local access mobile area refers to: an area capable of supporting local access service continuity.
  • the local access mobile area is: an area covered by a base station having a closed subscriber group identifier corresponding to the local access connection access point name.
  • the mobility management unit receives the following request, it is determined whether the user is located in the local access mobile area:
  • the releasing the local access connection comprises: releasing a core network tunnel corresponding to the local access connection;
  • the maintaining the local access connection includes: establishing a direct tunnel corresponding to the local access connection. After the domain, if it is determined that the local access connection is the unique connection of the user, the detachment of the user is initiated.
  • the present invention also provides a local access mobility management system, which is applied to a mobility management entity (MME) or a serving GPRS support node (SGSN), where the system includes a correspondence binding module and an access connection determination module, where :
  • the corresponding relationship binding module is configured to: save a correspondence between a local access point name and a closed user group identifier according to the user subscription;
  • the access connection determining module is configured to determine, according to the correspondence relationship saved by the binding module, whether the closed user group identifier of the wireless side network element accessed by the user is included in the local access connection of the user currently activated. Entering a closed user group identifier set corresponding to the point name to determine whether the user is located in a local access mobile area supporting the local access connection.
  • the access connection determining module is configured to: when the user is not in the local access mobile area, release the local access connection of the user; and when the user is located in the local access mobile area, The local access connection of the user is then maintained.
  • the access connection determining module is configured to: release the local access connection, and: release a core network tunnel corresponding to the local access connection;
  • the access connection determining module is configured to: maintain the local access connection, and include: establishing a direct tunnel corresponding to the local access connection.
  • the access connection determining module is further configured to: determine, when the following request is received, whether the user is located in the local access mobile area: a location update request, a service request, and/or a handover request.
  • the access connection determining module is further configured to: after determining that the user is not in the local access mobile area, if it is determined that the local access connection is a unique connection of the user, initiate the user to go Attached.
  • the embodiment of the present invention provides a specific method for determining the mobility of local access (including local IP access and selective IP transmission offload), and solves the problem that the core network determines the local access support area, when the user moves to the local area.
  • the core network determines the local access support area, when the user moves to the local area.
  • 1 is a schematic diagram of an architecture of an evolved packet domain system
  • 2a is a schematic diagram of a home base station accessing a core network
  • 2b is a schematic diagram of another home base station accessing a core network
  • 2c is a schematic diagram of another home base station accessing a core network
  • FIG. 3 is a schematic diagram of a data flow path for local access and traditional core network access; a schematic diagram of the relationship;
  • FIG. 5 is a schematic flowchart of Embodiment 1 of the present invention.
  • FIG. 7 is a schematic flowchart of Embodiment 3 of the present invention. Preferred embodiment of the invention
  • a home base station (Home NodeB, or HeNB for short) or an evolved home base station (Home eNodeB, HeNB for short) is a small, low-power base station that is deployed as a dedicated resource for some users in a home, group, company, or school.
  • the use of private places mainly to provide users with higher service rates and reduce the cost of using high-rate services, while making up for the lack of coverage of existing distributed cellular wireless communication systems.
  • the advantages of home base stations are affordability, convenience, low power output, plug and play, broadband access, and the use of single mode terminals.
  • the home base station can be directly connected to the core network.
  • the home base station gateway can also access the core network, as shown in FIG. 2b.
  • the main function of the home base station gateway is: verifying the home base station. Security, handling registration of the home base station, transporting the home base station Line maintenance management, configuration and control of the home base station according to the operator's requirements, responsible for exchanging data of the core network and the home base station. Or selective IP traffic offload (SIPTO), that is, the terminal adds local gateways to other IP devices in the home network, IP devices in the enterprise network, or the Internet access, as shown in Figure 2a. 2c is shown.
  • SIPTO selective IP traffic offload
  • the addition of the local access gateway can provide strong support for the local access technology.
  • the local gateway can be combined with the wireless side network element or near the wireless side network element (ie, external), or can be set up with the home base station gateway or at home. Near the base station gateway (ie external).
  • the local gateway includes a local PGW (Local PGW, referred to as L-GW) and a local GGSN (Local GGSN, abbreviated as L-GGSN).
  • Figure 3 shows the data flow paths for local access and traditional core network access in a mobile communication network architecture.
  • traditional core network access data paths and local access data paths can be established at the same time.
  • the local access data path is from the terminal to the wireless side network element to the local access gateway (eg, L-GW, and L-GGSN), and the data transmission does not pass through the core network.
  • the local access gateway eg, L-GW, and L-GGSN
  • two connections can be established, and the first local access data path directly accesses the Internet (Internet IP connection, that is, SIPTO connection).
  • the second local access data path directly accesses other IP devices on the home network (home network IP connection, ie LIPA connection).
  • the local access function is a way for the home or enterprise to provide access to resources by internal private users.
  • the application is not open to all users on the network, and there is no need to move the user out of the home or enterprise range. To provide such access resources. Therefore, for the user who enables the local access function, the local access service does not need to support the mobility of the entire network, and only provides the mobility of the local mobile range, thereby conforming to the application characteristics of the local access function, and also reducing the network. Additional processing by the operator to support local access. At present, how the core network determines that the scope of support for local mobility during user mobility has not been clearly implemented.
  • the core idea of the present invention is that the mobility management unit (such as the MME or the SGSN) of the core network determines the user according to the closed user group identifier (CSG ID) corresponding to the local access APN in the user subscription.
  • CSG ID closed user group identifier
  • the allowed mobile area of the local access connection also referred to herein as the local access mobile area. Further, when it is determined that the user moves beyond the area, the use is released. The user's local access connection, and vice versa, continues to maintain the user's local access connection.
  • the mapping between the local access APN and the CSG ID may be saved in the core network mobility management unit (such as the MME or the SGSN), and when the wireless side network element attached (or accessed) by the user sends a message to the core network,
  • the core network mobility management unit determines whether the CSG ID of the wireless side network element is the CSG ID corresponding to the APN of the local access connection, or the CSG ID of the wireless side network element when the APN corresponds to multiple CSG IDs. Whether it is included in the CSG ID set corresponding to the APN, if yes, it indicates that the user does not exceed the mobile area, the local access connection may continue to be maintained; otherwise, the user has exceeded the moving area, then the local is released. Access the connection.
  • FIG. 4 is a schematic diagram of a correspondence between a local access APN and a CSG ID saved by a core network mobility management unit according to an embodiment of the present invention.
  • the specific instructions are as follows:
  • the local access function can be used to access certain specific packet data networks, corresponding relationships.
  • the APN1 corresponding to the packet data network 1 is bound to the CSG ID1.
  • the user can access the packet data network 2 and the packet data network 3 locally under the base station with CSG ID2.
  • the mobility management unit may determine the local access mobile area according to the above correspondence. Specifically, when the user accesses the network, the core network mobility management unit may detect the CSG ID that the user currently attaches to the wireless side network element and the closed user group identifier corresponding to the local access connection APN of which the user has activated the local access connection. set. For example, if the user is currently activated A local access connection of the APN3, according to the user subscription data, it can be known that the wireless side network element having the CSG ID2 and CSG ID3 identifiers is an area in which the user can use the local access connection, so it can be determined that the CSG ID2 and the CSG ID3 are closed as described above. A set of user group IDs, that is, a local access mobile area determined by the core network mobility management unit, which is associated with a local access connection.
  • the core network mobility management unit compares the relationship between the CSG ID of the currently attached wireless side network element and the closed user group identifier set corresponding to the activated local access connection, if the user currently attaches the CSG of the wireless side network element The ID is included in the closed subscriber group identifier set corresponding to the local access connection APN. Then, it is determined that the local access connection can still be maintained, and the mobility of the local access is supported, and a direct tunnel is established to perform normal update processing. Otherwise, the core network mobility management unit determines that the local access connection cannot be maintained, and cannot support the mobility of the local access under the wireless side network element, and release the local access PDN connection.
  • the process of this embodiment mainly includes the following steps:
  • Step 501 The terminal moves to an area outside the routing area or the tracking area list, or the periodic timer expires, etc., and the terminal location update request message is triggered.
  • Step 502 When forwarding the location update request message, the radio side network element carries the closed subscriber group identifier CSG ID configured by the current radio side network element in the S1 or Iu interface message.
  • the activated local access connection can support the service continuity in the coverage of the current radio side network element.
  • the specific determination process refer to the foregoing logic diagram of the core network mobility management unit for determining the local access mobile area (the description of FIG. 4, here is not Make a comment).
  • Step 504a The core network mobility management unit sends the address of the local gateway and the association identifier of the direct tunnel and the core network tunnel to the radio side network element in the S1 or Iu interface message.
  • the associated identifier is a local access connection user plane TEID allocated by the P-GW or the GGSN.
  • Step 504b Establish a direct tunnel between the wireless side network element and the local gateway. For service continuity, the following steps are performed 505a: The core network mobility management unit releases the core network tunnel corresponding to the local access connection.
  • Step 506 The core network mobility management unit sends a location update accept message. If the local access connection is a user unique connection and is released because mobility cannot be supported within the current wireless side network element coverage, the core network mobility management unit initiates user de-attachment.
  • the process of this embodiment mainly includes the following steps:
  • Step 601 The terminal has signaling or data sending, and the terminal initiates a service request message.
  • Step 604a The core network mobility management unit sends the address of the local gateway and the association identifier of the direct tunnel and the core network tunnel to the wireless side network element in the S1 or Iu interface message.
  • the associated identifier is the local access connection user plane TEID assigned by the P-GW or the GGSN.
  • Step 604b Establish a direct tunnel between the wireless side network element and the local gateway.
  • the following step 605a is performed, and the core network mobility management unit releases the core network tunnel corresponding to the local access connection.
  • the process of this embodiment mainly includes the following steps:
  • Step 701 The terminal monitors the broadcast channel of the neighboring cell in the connected state, and periodically sends a measurement report to the wireless side network element, where the measurement report includes the identifier of the neighboring cell, the CSG ID, and the signal strength.
  • Step 702 The source radio side network element determines whether to initiate a handover process for the target radio side network element that is more suitable for the user to select according to the measurement report reported by the user.
  • the element sends a handover request message to the mobility management unit, where the message includes the CSG id and the network element identification information of the target radio side network element.
  • the foregoing core network mobility management unit determines the logic of the local access mobile area, which is not mentioned here.
  • Step 705a The core network mobility management unit sends the address of the local gateway and the association identifier of the direct tunnel and the core network tunnel to the wireless side network element in the S1 or Iu interface message.
  • the associated identifier is the local access connection user plane TEID assigned by the P-GW or the GGSN.
  • Step 705b Establish a direct tunnel between the wireless side network element and the local gateway.
  • step 706a For service continuity, the following step 706a is performed, and the core network mobility management unit releases the core network tunnel corresponding to the local access connection.
  • Step 707 The core network mobility management unit sends a handover life to the terminal by using the source wireless side network element. Order. If the local access connection is a user unique connection and is released because mobility cannot be supported within the current wireless side network element coverage, the core network mobility management unit initiates user detachment.
  • the core network mobility management unit includes a mobility management entity MME and a serving GPRS support node SGSN.
  • Local access features include: Local IP access, selective IP transport offload.
  • the wireless side network element includes: a home base station and a home base station gateway.
  • the embodiment of the present invention further provides a mobility management system, which is applied to an MME or an SGSN, where the system mainly includes a correspondence binding module and an access connection determining module, where: the corresponding relationship binding module is used, The correspondence between the local access point name and the closed user group identifier is saved according to the user subscription;
  • the access connection determining module is configured to determine, according to the correspondence relationship saved by the binding module, whether the closed user group identifier of the wireless side network element accessed by the user is included in the local access connection of the user currently activated. Entering a closed user group identifier set corresponding to the point name to determine whether the user is located in a local access mobile area supporting the local access connection.
  • the access connection determining module is configured to: when the user is not in the local access mobile area, release the local access connection of the user; and determine that the user is located in the local access mobile area, The local access connection of the user is then maintained.
  • the access connection determining module releases the local access connection, including: releasing a core network tunnel corresponding to the local access connection;
  • the access connection determination module maintains the local access connection, including: establishing a direct tunnel corresponding to the local access connection.
  • the access connection determining module is configured to determine, when the following request is received, whether the user is located in the local access mobile area: a location update request, a service request, and/or a handover request.
  • the access connection determining module is further configured to: after determining that the user is not in the local access mobile area, if it is determined that the local access connection is a unique connection of the user, initiate the user to go Attached.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any particular combination of hardware and software.
  • the present invention provides a specific method for determining local mobility (including local IP access and selective IP transmission offload) mobility, and solves the problem that the core network determines the local access support area when the user moves to the local access mobile. When outside the zone, the local access connection is released at the right time to meet the local access mobility requirements.

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

Abstract

La présente invention porte sur un procédé de gestion de mobilité d'accès local, le procédé comprenant l'opération suivante : conformément à la relation de correspondance entre le nom du point d'accès local figurant dans le contrat signé par l'utilisateur et l'identificateur de groupe fermé d'utilisateurs, une unité de gestion de mobilité de cœur de réseau, par détermination du fait que l'identificateur de groupe fermé d'utilisateurs de l'élément de réseau côté sans fil auquel accède l'utilisateur est ou non inclus dans l'ensemble de marques de groupe fermé d'utilisateurs qui correspond au nom de point d'accès de la liaison locale présente activée par l'utilisateur, détermine si l'utilisateur se trouve ou non dans la zone de mobilité d'accès local qui prend en charge une liaison d'accès local. La présente invention porte également sur le système correspondant. La présente invention résout le problème lié à la détermination, par le cœur de réseau, des zones de prise en charge d'accès local. Lorsque l'utilisateur sort de la zone de mobilité d'accès local, la liaison d'accès local est dûment libérée et l'exigence de mobilité d'accès local est satisfaite.
PCT/CN2012/070969 2011-03-24 2012-02-09 Procédé et système de gestion de mobilité d'accès local Ceased WO2012126290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110072228.8A CN102695160B (zh) 2011-03-24 一种本地访问移动性管理方法及系统
CN201110072228.8 2011-03-24

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WO2012126290A1 true WO2012126290A1 (fr) 2012-09-27

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Citations (4)

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Publication number Priority date Publication date Assignee Title
EP2166785A1 (fr) * 2008-09-22 2010-03-24 HTC Corporation Procédé de contrôle de la sélection cellulaire pour un système de communication sans fil et dispositif associé
CN101909248A (zh) * 2009-06-04 2010-12-08 中兴通讯股份有限公司 用户接入方法及系统、闭合用户组用户管理方法及系统
CN101931926A (zh) * 2009-06-26 2010-12-29 华为终端有限公司 Csg成员关系的管理方法、系统、网络侧设备和ue
CN101990313A (zh) * 2009-08-06 2011-03-23 中兴通讯股份有限公司 实现本地ip访问控制的方法、通知方法及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2166785A1 (fr) * 2008-09-22 2010-03-24 HTC Corporation Procédé de contrôle de la sélection cellulaire pour un système de communication sans fil et dispositif associé
CN101909248A (zh) * 2009-06-04 2010-12-08 中兴通讯股份有限公司 用户接入方法及系统、闭合用户组用户管理方法及系统
CN101931926A (zh) * 2009-06-26 2010-12-29 华为终端有限公司 Csg成员关系的管理方法、系统、网络侧设备和ue
CN101990313A (zh) * 2009-08-06 2011-03-23 中兴通讯股份有限公司 实现本地ip访问控制的方法、通知方法及系统

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