WO2010000150A1 - Method and system for transfering context information, and access service network - Google Patents

Method and system for transfering context information, and access service network Download PDF

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Publication number
WO2010000150A1
WO2010000150A1 PCT/CN2009/071275 CN2009071275W WO2010000150A1 WO 2010000150 A1 WO2010000150 A1 WO 2010000150A1 CN 2009071275 W CN2009071275 W CN 2009071275W WO 2010000150 A1 WO2010000150 A1 WO 2010000150A1
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Prior art keywords
context information
host
message
asn
context
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PCT/CN2009/071275
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French (fr)
Chinese (zh)
Inventor
卢磊
张伟
顾亮
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华为技术有限公司
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Publication of WO2010000150A1 publication Critical patent/WO2010000150A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, system, and access service network for context information migration. Background of the invention
  • the current multi-host WiMAX (Worldwide Interoperability for Microwave Access) network system architecture diagram is shown in Figure 1, the host (Host) through the 802.3/802.11/802.16 link and G-MS (Gateway Mobile Station , (Gateway mobile station) communication, G-MS is connected between the ASN (Access Service Network) and the NAP (Network Access Provider)
  • the interface is the R8 interface
  • the interface between the ASN GW (Access Service Network Gateway) is the R4 interface
  • the interface between the BS and the ASN GW is the R6 interface
  • the ASN GW and the network service provider NSP Network
  • the interface between the Connection Service Network (CSN) of the Service Provider is an R3 interface.
  • the Host is a user terminal; the G-MS is a device with WiMAX wireless air interface access capability, which can be a network side device or a user side device, and can share WiMAX wireless air interface access to multiple hosts;
  • the G-MS is connected to the WiMAX network.
  • Host is also a WiMAX network subscription user.
  • the WiMAX network needs to manage the Host of the G-MS backend and provide network services for the Host.
  • the connection technology between Host and G-MS can be wired technology, such as 802.3, or wireless connection, such as 802.11, or 802.16.
  • a method for migrating context information includes:
  • the target ASN receives the second handover message carrying the context information of the G-MS and the context information of the host. If the context information of the G-MS carried in the second handover message and the context information of the Host are available, the target ASN Initiating a data channel establishment or pre-establishment process with the anchor access service network, wherein the context information of the Host is used in the data channel establishment or pre-establishment process.
  • the context report message carries context information of the G-MS and context information of the host Host.
  • a receiving unit configured to receive a first switching message from the G-MS
  • a sending unit configured to send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host.
  • a first receiving unit configured to receive a ranging request from the G-MS
  • a sending unit configured to send a context request message to the serving ASN
  • the second receiving unit is configured to receive a context report message from the serving ASN, where the context report message carries context information of the G-MS and context information of the host.
  • the service ASN is configured to receive a first handover message from the G-MS, and send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host.
  • the target ASN is configured to receive a second handover message sent by the serving ASN.
  • a target ASN configured to receive a ranging request message from the G-MS, and send a context request message to the serving ASN;
  • the service ASN is configured to receive a context request message from the target ASN, and send a context report message to the target ASN, where the context report message carries context information of the G-MS and context information of the host Host;
  • the target ASN is further configured to receive a context report message from the serving ASN.
  • the G-MS context information and the Host context information are transmitted to the target ASN through a signaling, which reduces the signaling overhead.
  • Figure 1 is a multi-host WiMAX network system architecture diagram
  • FIG. 2 is a flowchart of a method for context information migration according to Embodiment 1 of the present invention
  • Embodiment 3 is a flowchart of a method for migrating context information provided by Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of an access service network device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of an access service network device according to an embodiment of the present invention. Mode for carrying out the invention
  • the embodiment of the invention discloses a method, a system and an access service network for context information migration.
  • the method for migrating the context information includes: receiving a first handover message from the G-MS; and sending a second handover message to the target access service network ASN, where the second handover message carries the G-MS Context information and context information of the host Host.
  • the context information of the Host in the foregoing embodiment may include: an authenticator identifier of the Host, an anchor access network gateway identifier (Anchor ASN GW ID), traffic flow information, and an anchor mobility management context.
  • the embodiment of the present invention further includes: the first handover message is a mobile station handover request message, and the second handover message is a handover request message; or the first handover message is a mobile station handover indication message, and the second handover message is a handover confirmation message.
  • the target ASN If the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, initiate a data channel pre-establishment process with the anchor access service network, where the data channel pre-establishment process is used.
  • the context information of the Host is used.
  • the embodiment of the invention further includes: And if the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, initiate a data channel establishment process with the anchor access service network, where the host is used in the data channel establishment process. Contextual information.
  • the embodiment of the invention further provides a method for migrating context information, including:
  • the context report message carries the context information of the G-MS and the context information of the host Host.
  • the context information of the G-MS and the Host context information are simultaneously transmitted to the target ASN, which reduces the signaling overhead.
  • FIG. 2 is a flowchart of a method for context information migration according to Embodiment 1 of the present invention.
  • the context information of the G-MS and the Host is simultaneously transmitted to the target ASN and transmitted to the anchor ASN.
  • Step 201 The G-MS sends a mobile station handover request (MOB_MSHO-REQ) message to the service ASN (Serving
  • the ASN initiates a handover procedure, and the message may include a target base station, and may also include multiple target base stations.
  • Step 202 The serving ASN sends an R4 HO-Req (Handover Request) message to the target ASN (Target ASN), where the message includes the context information of the G-MS and the Host context information, where the context information of the G-MS may include: - the Authenticator ID of the MS and the anchor ASN-GW ID of the G-MS; the Host context information may include: the authenticator ID of the Host, the Authenticator ID, the Anchor ASN-GW ID, Service flow information SF info , anchor mobility management context Anchor MM (Mobility Management) Context:.
  • Host Info TINs to the G-MS Info TLV (Type Length Value) of the R4 HO-Req message.
  • the definition can be as shown in Table 1, Host M As shown in table 2.
  • Step 203 The target ASN obtains an authorization key context of the G-MS by using a context request process with a G-MS Authenticator ASN, if the R4 handover request message does not include an authenticator of the G-MS.
  • the identity in this case, the serving ASN can act as a G-MS Authenticator ASN, and the target ASN initiates a context request procedure with the serving ASN.
  • Step 204 The target ASN obtains the authorization key context of the Host by using a context request process of the Host Authenticator ASN. If the R4 handover request message does not include the authenticator identifier of the Host (the service ASN can be used as the service ASN). Host Authenticator ASN), the target ASN initiates a context request procedure with the serving ASN.
  • Step 205 If the context information of the G-MS acquired by the target ASN, the context information of the Host, the authorization key context information of the G-MS, and the authorization key context information of the Host are available, the target ASN may initiate and anchor the ASN (Anchor). ASN) Pre-establishment process between the G-MS and the host data channel, the context information of the Host is used in the pre-establishment process of the data channel.
  • Path_Reg_Req data channel registration request
  • Path_Reg-Rsp data channel registration response
  • Path-PreReg-Req data channel pre-registration request
  • Path- PreReg—Rsp Data Channel Pre-registration Response
  • Step 206 The target ASN sends an R4 HO_Rsp (Handover Response) message to the serving ASN to answer the switch request.
  • R4 HO_Rsp Haandover Response
  • Step 207 The service ASN receives the R4 HO_Rsp message, and sends a base station handover response (MOB_BSHO-RSP) message to the G-MS, where the message may include one or more target base stations that are switchable in the network selected by the G-MS. .
  • MOB_BSHO-RSP base station handover response
  • Step 208 The serving ASN sends an R4 HO-Ack (Handover Answer) message to the target ASN.
  • R4 HO-Ack Handover Answer
  • the foregoing embodiment simultaneously transmits the context information of the G-MS and the Host context information to the related entities on the network side, so when the G-MS moves, the target ASN simultaneously acquires the context of the G-MS.
  • Information and Host context information and the establishment of new air interface connections and data channels, reducing the overhead of signaling.
  • the Host context information may be included in the G-MS context information (G-MS context information, such as the G-MS Info shown in Table 1 above), to be delivered to the target ASN, so that the target ASN can obtain the relevant information of the Host from the authenticator, and establish a new Air interface connections and data channels reduce signaling overhead.
  • G-MS context information such as the G-MS Info shown in Table 1 above
  • FIG. 3 is a flowchart of a method for context information migration according to Embodiment 2 of the present invention.
  • the service ASN sends a handover confirmation message, and the G-MS context information and the Host context information are transmitted to the target ASN and transmitted to the anchor ASN.
  • Step 301 The G-MS sends a MOB_HO_IND (Mobile Station Handover Indication) message to the service ASN to initiate a handover procedure, which includes the target base station identity.
  • MOB_HO_IND Mobile Station Handover Indication
  • the service ASN sends an R4 HO_Cnf (Handover Confirmation) message to the target ASN, which contains the context information of the G-MS and the context information of the Host.
  • the context information of the G-MS may include: an Authenticator ID of the G-MS and an anchor ASN gateway identifier of the G-MS;
  • the Host context information may include: an Authenticator ID of the Host, an Anchor ASN GW ID, an SF info, an Anchor MM Context: .
  • Host Info TLVs To implement the migration of context information, you can add one or more Host Info TLVs to the G-MS Info TLV of the R4 HO-Cnf message.
  • the definitions are shown in Table 3.
  • Host Info is shown in Table 4.
  • BS Info (Target, one or M Relative Delay, DL/UL PHY Quality Info as
  • Target ASN SHALL retrieve
  • Step 303 The target ASN sends a HO_Ack (Handover Answer) message to the Serving ASN.
  • HO_Ack Haandover Answer
  • Step 305 The target ASN obtains the authorization key context of the Host through the context request process with the Host Authenticator ASN, and if the handover request message does not include the authenticator identifier of the Host (at this time)
  • the service ASN can act as a Host Authenticator ASN), and the target ASN initiates a context request procedure with the serving ASN.
  • it may be a message in the pre-establishment process of the data channel: Path_Reg-Req, Path-Reg-Rsp, Path-PreReg-Req or Path-PreReg-Rsp, the field is added, and the definition of the added field is the same as the extension in the R4 HO_Cnf message.
  • the method is similar and will not be described here.
  • Step 307. The G-MS moves to the target ASN and initiates a re-entry procedure.
  • Step 308. The target ASN initiates the establishment process of the G-MS and the host data channel between the anchor ASN.
  • Step 309 The target ASN initiates a CMAC Key Count (cipher-based message authentication code Key Count) update process with the G-MS Authenticator ASN.
  • CMAC Key Count cipher-based message authentication code Key Count
  • Step 310 the target ASN initiates a CMAC Key Count update process with the Host Authenticator ASN.
  • Step 31 The target ASN sends an R4 HO—Complete message to the service ASN indicating that the handover is complete.
  • the context information of the G-MS and the Host context information are simultaneously transmitted to the related entities on the network side, so when the G-MS moves, the target ASN simultaneously acquires the context of the G-MS.
  • Step 401 The G-MS sends an RNG-REQ (Ranging Request) message to the target ASN to initiate a handover procedure, where the message includes the serving base station identifier.
  • RNG-REQ Rastering Request
  • Step 402. The target ASN sends a Context_req (Context Request) message to the serving ASN.
  • the service ASN returns a context_report message to the target ASN.
  • the message contains the context information of the G-MS and contains the context information of the Host.
  • the context information of the G-MS may include: an Authenticator ID of the G-MS and an anchor ASN gateway identifier of the G-MS; the context information of the Host may include: an Authenticator ID of the Host, an Anchor ASN GW ID, an SF info, an Anchor MM Context Wait.
  • Host Info is shown in Table 6: Wake up
  • the target ASN is obtained through the context request process with the G-MS Authenticator ASN.
  • the authorization key context of the G-MS If the context_report message does not contain the authenticator identifier of the G-MS (the service ASN can be used as the G-MS Authenticator ASN), the target ASN initiates a context request procedure with the serving ASN.
  • Step 405. The target ASN obtains the authorization key context of the Host through the context request process with the Host Authenticator ASN. If the context_report message does not include the authenticator identifier of the Host (the service ASN can be used as the Host Authenticator ASN), the target The ASN initiates a context request procedure with the serving ASN.
  • Step 406 If the context information of the G-MS acquired by the target ASN and the context information of the Host are available, the target ASN initiates a process of establishing the G-MS and the host data channel between the Anchor ASN, and the Host channel is used in the establishment of the data channel. Contextual information.
  • Step 407. The target ASN sends an RNG-RSP (Ranging Response) message to the G-MS.
  • RNG-RSP Rastering Response
  • Step 408 The target ASN initiates a CMAC Key Count update procedure with the G-MS Authenticator ASN.
  • Step 409 the target ASN initiates a CMAC Key Count update process with the Host Authenticator ASN.
  • Step 410 The Anchor ASN initiates a data channel logoff procedure with the serving ASN.
  • the serving ASN simultaneously transmits the context information of the G-MS and the Host context information to the related entity on the network side. Therefore, when the G-MS moves, the target ASN can be acquired at one time.
  • An embodiment of the present invention provides an access service network, as shown in FIG. 5, including a receiving unit 501 and a sending unit 502;
  • the receiving unit 501 is configured to receive a first handover message from the G-MS, where the first handover message is a mobile station handover request message or a mobile station handover indication message;
  • the sending unit 502 is configured to send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host. If the first handover message is a mobile station handover request message, the second The handover message is a handover request message; if the first handover message is a mobile station handover indication message, the second handover message is a handover confirmation message.
  • the embodiment of the present invention further provides an access service network, as shown in FIG. 6, including a first receiving unit 601, a sending unit 602, and a second receiving unit 603; a first receiving unit 601, configured to receive a ranging request from the G-MS;
  • the sending unit 602 is configured to send a context request message to the serving ASN.
  • the second receiving unit 603 is configured to receive a context report message from the serving ASN, where the context report message carries the context information of the G-MS and the context information of the Host.
  • the access service network provided by the embodiment of the present invention may further include a determining unit 604 and an execution unit.
  • the determining unit 604 is configured to determine whether the context information of the G-MS carried in the context report message and the context information of the Host are available;
  • the executing unit 605 is configured to initiate a data channel establishing process with the anchor access service network if the determining unit 604 determines that the context information of the G-MS carried in the context report message and the context information of the Host are available, and the data channel is used in the process of establishing the data channel. Host context information.
  • the embodiment of the present invention provides a system for context information migration, including a service ASN and a target ASN.
  • the service ASN is configured to receive a first handover message from a G-MS, where the first handover message is a mobile station handover request message or a mobile station.
  • the handover indication message is sent by the service ASN to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host. If the first handover message is a mobile station handover request message, the second handover The message is a handover request message; if the first handover message is a mobile station handover indication message, the second handover message is a handover confirmation message;
  • the target ASN is configured to receive a second handover message sent by the serving ASN.
  • the context information of the foregoing Host includes: an authenticator identifier of the Host, an Anchor ASN GW ID, a service flow information, and an anchor mobility management context.
  • the system for context information migration provided by the embodiment of the present invention further includes an anchor access service network; if the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, the target ASN Initiating a data channel pre-establishment process with the anchor access service network, and using the context information of the host in the data channel pre-establishment process;
  • the target ASN initiates data with the anchor access service network.
  • the channel establishment process uses the context information of the host during the data channel establishment process.
  • the embodiment of the present invention further provides a system for context information migration, including a service ASN and a target ASN; the target ASN is configured to receive a ranging request message from the G-MS, and send a context request message to the serving ASN;
  • the service ASN is configured to receive a context request message from the target ASN, and send a context report message to the target ASN, where the context report message carries the context information of the G-MS and the context information of the host Host; the target ASN is used to receive the service from the service.
  • ASN's context report message is used to receive the service from the service.
  • the system for context information migration provided by the foregoing embodiment further includes an anchor access service network; if the context information of the G-MS and the context information of the host carried in the context report message received by the target ASN are available, the target ASN initiates and The data channel establishment process of the anchor access service network is used, and the context information of the host is used in the data channel establishment process.
  • the serving ASN when the system and the access service network are in the G-MS handover, sends the context information of the G-MS and the context information of the host to the target ASN through a signaling. Reduce the overhead of signaling.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

A method and a system for transferring context information, and an access service network. The method includes that, the first handover message is received from a Gateway Mobile Station (G-MS); the second handover message is sent to a target Access Service Network (ASN), a G-MS context information and a Host (Host) context information are carried in the second handover message. A system for transferring context information and an access service network are supplied by the embodiments of the invention. It reduces the message overhead in the embodiments of the invention that the G-MS context information and the Host context information are transferred to the target ASN by one message when G-MS is switched.

Description

一种上下文信息迁移的方法、 ***和接入服务网络  Method, system and access service network for context information migration
本申请要求于 2008年 6月 30日提交中国专利局、 申请号为 200810068190.5、 发明名 称为"一种上下文信息迁移的方法、 ***和接入服务网络"的中国专利申请的优先权， 其 全部内容通过弓 I用结合在本申请中。 技术领域  This application claims priority to Chinese Patent Application No. 200810068190.5, entitled "Method, System and Access Service Network for Context Information Migration", filed on June 30, 2008. It is incorporated by reference in this application. Technical field
本发明涉及到通信技术领域，特别涉及到一种上下文信息迁移的方法、***和接入 服务网络。 发明背景  The present invention relates to the field of communications technologies, and in particular, to a method, system, and access service network for context information migration. Background of the invention
当前的多主机 WiMAX (Worldwide Interoperability for Microwave Access,全球接入 微波互操作性） 网络***架构图如图 1所示， 主机（Host)通过 802.3/802.11/802.16链 路与 G-MS (Gateway Mobile Station, 网关移动台）通信， G-MS通过 WiMAX的 R1接 口连接 ASN (Access Service Network, 接入服务网络）， NAP ( Network Access Provider, 网络接入提供者）的 BS (Base Station,基站）之间的接口为 R8接口， ASN GW ( Access service Network Gateway, 接入服务网络网关）之间的接口为 R4接口， BS与 ASN GW 之间的接口为 R6接口， ASN GW与网络服务提供者 NSP ( Network Service Provider)的 连接服务网络 CSN ( Connectivity Service Network)之间的接口为 R3接口。  The current multi-host WiMAX (Worldwide Interoperability for Microwave Access) network system architecture diagram is shown in Figure 1, the host (Host) through the 802.3/802.11/802.16 link and G-MS (Gateway Mobile Station , (Gateway mobile station) communication, G-MS is connected between the ASN (Access Service Network) and the NAP (Network Access Provider) The interface is the R8 interface, the interface between the ASN GW (Access Service Network Gateway) is the R4 interface, the interface between the BS and the ASN GW is the R6 interface, and the ASN GW and the network service provider NSP (Network) The interface between the Connection Service Network (CSN) of the Service Provider is an R3 interface.
其中， Host是用户终端； G-MS是具有 WiMAX无线空口接入能力的设备， 它可以 是网络侧设备也可以是用户侧设备， 可共享给多个 Host提供 WiMAX无线空口接入； Host可以通过 G-MS接入 WiMAX网络。 Host还是 WiMAX网络签约用户， WiMAX网 络需要对 G-MS后端的 Host进行管理， 并为 Host提供网络服务。 Host和 G-MS之间的 连接技术可以是有线技术， 如 802.3， 也可以是无线连接， 如 802.11， 或者 802.16等。  The Host is a user terminal; the G-MS is a device with WiMAX wireless air interface access capability, which can be a network side device or a user side device, and can share WiMAX wireless air interface access to multiple hosts; The G-MS is connected to the WiMAX network. Host is also a WiMAX network subscription user. The WiMAX network needs to manage the Host of the G-MS backend and provide network services for the Host. The connection technology between Host and G-MS can be wired technology, such as 802.3, or wireless connection, such as 802.11, or 802.16.
在进行本发明过程中，发明人发现现有技术中至少存在如下问题：在某些多主机系 统的应用场景中， 比如火车或汽车中 G-MS移动的场景中， 所有 Host将伴随 G-MS— 起移动，在所有 Host伴随 G-MS移动引起的切换过程中，需要通过多条信令分别将 G-MS 和所有 Host的上下文信息传递到新的目标接入服务网络， 造成信令开销过大。 发明内容  In carrying out the process of the present invention, the inventors have found that at least the following problems exist in the prior art: in some scenarios of multi-host systems, such as G-MS mobile in a train or car, all Hosts will be accompanied by G-MS. In the process of handover caused by all the Hosts accompanying G-MS mobility, the G-MS and all Host context information must be separately transmitted to the new target access service network through multiple signalings, resulting in signaling overhead. Big. Summary of the invention
本发明实施例所要解决的技术问题是提供一种上下文信息迁移的方法、***和接入 服务网络以解决现有技术中传递 G-MS和 Host上下文信息信令开销过大的问题。 本发明实施例提供的一种上下文信息迁移的方法， 包括： The technical problem to be solved by the embodiments of the present invention is to provide a method, a system, and an access service network for context information migration to solve the problem of excessive signaling overhead of transmitting G-MS and Host context information in the prior art. A method for migrating context information provided by an embodiment of the present invention includes:
接收来自网关移动台 G-MS的第一切换消息；  Receiving a first handover message from the gateway mobile station G-MS;
向目标接入服务网络 ASN发送第二切换消息， 所述第二切换消息中携带有 G-MS 的上下文信息和主机 Host的上下文信息。  Sending a second handover message to the target access service network ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host.
本发明实施例提供的一种上下文信息迁移的方法， 包括：  A method for migrating context information provided by an embodiment of the present invention includes:
目标 ASN接收携带有 G-MS的上下文信息和 Host的上下文信息的第二切换消 息，如果所述第二切换消息中携带的 G-MS的上下文信息和 Host的上下文信息可用， 则所述目标 ASN发起与锚定接入服务网络的数据通道建立或预建立过程， 所述数据 通道建立或预建立过程中使用所述 Host的上下文信息。  The target ASN receives the second handover message carrying the context information of the G-MS and the context information of the host. If the context information of the G-MS carried in the second handover message and the context information of the Host are available, the target ASN Initiating a data channel establishment or pre-establishment process with the anchor access service network, wherein the context information of the Host is used in the data channel establishment or pre-establishment process.
本发明实施例提供的一种上下文信息迁移的方法， 包括：  A method for migrating context information provided by an embodiment of the present invention includes:
接收来自 G-MS的测距请求消息；  Receiving a ranging request message from the G-MS;
向服务 ASN发送上下文请求消息；  Sending a context request message to the serving ASN;
接收来自所述服务 ASN的上下文报告消息， 所述上下文报告消息中携带有 G-MS 的上下文信息和主机 Host的上下文信息。  Receiving a context report message from the serving ASN, where the context report message carries context information of the G-MS and context information of the host Host.
本发明实施例提供的一种接入服务网络， 包括：  An access service network provided by the embodiment of the present invention includes:
接收单元， 用于接收来自 G-MS的第一切换消息；  a receiving unit, configured to receive a first switching message from the G-MS;
发送单元，用于向目标 ASN发送第二切换消息，所述第二切换消息中携带有 G-MS 的上下文信息和 Host的上下文信息。  And a sending unit, configured to send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host.
本发明实施例提供的一种接入服务网络， 包括：  An access service network provided by the embodiment of the present invention includes:
第一接收单元， 用于接收来自 G-MS的测距请求；  a first receiving unit, configured to receive a ranging request from the G-MS;
发送单元， 用于向服务 ASN发送上下文请求消息；  a sending unit, configured to send a context request message to the serving ASN;
第二接收单元， 用于接收来自服务 ASN的上下文报告消息， 所述上下文报告消息 中携带有 G-MS的上下文信息和 Host的上下文信息。  The second receiving unit is configured to receive a context report message from the serving ASN, where the context report message carries context information of the G-MS and context information of the host.
本发明实施例提供的一种上下文信息迁移的***， 包括：  A system for context information migration provided by an embodiment of the present invention includes:
服务 ASN，用于接收来自 G-MS的第一切换消息，向目标 ASN发送第二切换消息， 所述第二切换消息中携带有 G-MS的上下文信息和主机 Host的上下文信息；  The service ASN is configured to receive a first handover message from the G-MS, and send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host.
所述目标 ASN， 用于接收所述服务 ASN发送的第二切换消息。  The target ASN is configured to receive a second handover message sent by the serving ASN.
本发明实施例提供的一种上下文信息迁移的***， 包括：  A system for context information migration provided by an embodiment of the present invention includes:
目标 ASN， 用于接收来自 G-MS的测距请求消息， 并向服务 ASN发送上下文请求 消息； 所述服务 ASN， 用于接收来自所述目标 ASN 的上下文请求消息， 并向所述目标 ASN发送上下文报告消息， 所述上下文报告消息中携带有 G-MS的上下文信息和主机 Host的上下文信息； a target ASN, configured to receive a ranging request message from the G-MS, and send a context request message to the serving ASN; The service ASN is configured to receive a context request message from the target ASN, and send a context report message to the target ASN, where the context report message carries context information of the G-MS and context information of the host Host;
所述目标 ASN， 还用于接收来自所述服务 ASN的上下文报告消息。  The target ASN is further configured to receive a context report message from the serving ASN.
由此可以看出， 本发明实施例在 G-MS切换时， 将 G-MS的上下文信息和 Host上 下文信息通过一条信令传递给目标 ASN， 减少了信令的开销。 附图简要说明  It can be seen that, in the G-MS handover, the G-MS context information and the Host context information are transmitted to the target ASN through a signaling, which reduces the signaling overhead. BRIEF DESCRIPTION OF THE DRAWINGS
图 1为多主机 WiMAX网络***架构图；  Figure 1 is a multi-host WiMAX network system architecture diagram;
图 2为本发明具体实施方式一提供的上下文信息迁移的方法流程图；  2 is a flowchart of a method for context information migration according to Embodiment 1 of the present invention;
图 3为本发明具体实施方式二提供的上下文信息迁移的方法流程图；  3 is a flowchart of a method for migrating context information provided by Embodiment 2 of the present invention;
图 4为本发明具体实施方式三提供的上下文信息迁移的方法流程图；  4 is a flowchart of a method for context information migration according to Embodiment 3 of the present invention;
图 5为本发明实施例提供的接入服务网络装置结构示意图；  FIG. 5 is a schematic structural diagram of an access service network device according to an embodiment of the present disclosure;
图 6为本发明实施例提供的接入服务网络装置结构示意图。 实施本发明的方式  FIG. 6 is a schematic structural diagram of an access service network device according to an embodiment of the present invention. Mode for carrying out the invention
本发明实施例公开了一种上下文信息迁移的方法、 ***和接入服务网络。  The embodiment of the invention discloses a method, a system and an access service network for context information migration.
本发明实施例提供的上下文信息迁移的方法，包括：接收来自 G-MS的第一切换消 息； 向目标接入服务网络 ASN发送第二切换消息， 该第二切换消息中携带有 G-MS的 上下文信息和主机 Host的上下文信息。  The method for migrating the context information provided by the embodiment of the present invention includes: receiving a first handover message from the G-MS; and sending a second handover message to the target access service network ASN, where the second handover message carries the G-MS Context information and context information of the host Host.
本发明实施例通过在 G-MS切换时， 将 G-MS的上下文信息和 Host上下文信息同 时传递给目标 ASN， 减少了信令的开销。  In the embodiment of the present invention, when the G-MS is switched, the context information of the G-MS and the Host context information are simultaneously transmitted to the target ASN, which reduces the signaling overhead.
其中上述实施例中的 Host的上下文信息可以包括： Host的鉴权器标识， 锚定接入 服务网络网关标识 (Anchor ASN GW ID), 业务流信息和锚定移动性管理上下文。  The context information of the Host in the foregoing embodiment may include: an authenticator identifier of the Host, an anchor access network gateway identifier (Anchor ASN GW ID), traffic flow information, and an anchor mobility management context.
本发明实施例还进一步包括：第一切换消息为移动台切换请求消息，第二切换消息 为切换请求消息； 或者第一切换消息为移动台切换指示消息， 第二切换消息为切换确认 消息。  The embodiment of the present invention further includes: the first handover message is a mobile station handover request message, and the second handover message is a handover request message; or the first handover message is a mobile station handover indication message, and the second handover message is a handover confirmation message.
如果目标 ASN接收的第二切换消息中携带的 G-MS的上下文信息和 Host的上下文 信息可用， 发起与锚定接入服务网络的数据通道预建立过程， 所述数据通道预建立过程 中使用所述 Host的上下文信息。  If the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, initiate a data channel pre-establishment process with the anchor access service network, where the data channel pre-establishment process is used. The context information of the Host.
本发明实施例还进一步包括： 如果目标 ASN接收的第二切换消息中携带的 G-MS的上下文信息和 Host的上下文 信息可用， 发起与锚定接入服务网络的数据通道建立过程， 所述数据通道建立过程中使 用所述 Host的上下文信息。 The embodiment of the invention further includes: And if the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, initiate a data channel establishment process with the anchor access service network, where the host is used in the data channel establishment process. Contextual information.
本发明实施例还提供了一种上下文信息迁移的方法， 包括：  The embodiment of the invention further provides a method for migrating context information, including:
接收来自 G-MS的测距请求消息；  Receiving a ranging request message from the G-MS;
向服务 ASN发送上下文请求消息；  Sending a context request message to the serving ASN;
接收来自服务 ASN的上下文报告消息， 上下文报告消息中携带有 G-MS的上下文 信息和主机 Host的上下文信息。  Receiving a context report message from the serving ASN, the context report message carries the context information of the G-MS and the context information of the host Host.
本发明实施例通过在 G-MS切换时， 将 G-MS的上下文信息和 Host上下文信息同 时传递给目标 ASN， 减少了信令的开销。  In the embodiment of the present invention, when the G-MS is switched, the context information of the G-MS and the Host context information are simultaneously transmitted to the target ASN, which reduces the signaling overhead.
下面结合附图对本发明实施例的具体实施方式做进一步的详细阐述。  The specific embodiments of the embodiments of the present invention are further described in detail below with reference to the accompanying drawings.
图 2为本发明具体实施方式一提供的上下文信息迁移的方法流程图。 该实施例在 G-MS进入切换准备阶段时，在切换请求时同时把 G-MS和 Host的上下文信息传递给目 标 ASN， 并传递给锚定 ASN。  FIG. 2 is a flowchart of a method for context information migration according to Embodiment 1 of the present invention. In this embodiment, when the G-MS enters the handover preparation phase, the context information of the G-MS and the Host is simultaneously transmitted to the target ASN and transmitted to the anchor ASN.
步骤 201、G-MS发送移动台切换请求（MOB— MSHO-REQ)消息到服务 ASN( Serving Step 201: The G-MS sends a mobile station handover request (MOB_MSHO-REQ) message to the service ASN (Serving
ASN)发起切换过程， 该消息中可以包含一个目标基站， 也可以包含多个目标基站。 The ASN) initiates a handover procedure, and the message may include a target base station, and may also include multiple target base stations.
步骤 202、 服务 ASN发送 R4 HO— Req (切换请求） 消息到目标 ASN(Target ASN)， 该消息中包含了 G-MS的上下文信息和 Host上下文信息， 其中 G-MS 的上下文信息可 以包括： G-MS的鉴权器标识（ Authenticator ID)和 G-MS的锚定 ASN网关标识（Anchor ASN-GW ID )； Host上下文信息可以包括： Host的鉴权器标识 Authenticator ID， Anchor ASN-GW ID , 业务流信息 SF info , 锚定移动性管理上下文 Anchor MM(Mobility Management) Context：。  Step 202: The serving ASN sends an R4 HO-Req (Handover Request) message to the target ASN (Target ASN), where the message includes the context information of the G-MS and the Host context information, where the context information of the G-MS may include: - the Authenticator ID of the MS and the anchor ASN-GW ID of the G-MS; the Host context information may include: the authenticator ID of the Host, the Authenticator ID, the Anchor ASN-GW ID, Service flow information SF info , anchor mobility management context Anchor MM (Mobility Management) Context:.
为了实现上下文信息的迁移， 可以在 R4 HO— Req消息的 G-MS Info TLV (Type Length Value, 类型长度内容） 中增加一个或者多个 Host Info TIN, 其定义可以如表 1 所示， Host M 如表 2所示。  To implement the migration of context information, you can add one or more Host Info TINs to the G-MS Info TLV (Type Length Value) of the R4 HO-Req message. The definition can be as shown in Table 1, Host M As shown in table 2.
表 1  Table 1
IE M/O Notes  IE M/O Notes
HO Type M  HO Type M
G-MS Info M G-MS Info M
>Host Info 0 One or more
Figure imgf000007_0001
>Host Info 0 One or more
Figure imgf000007_0001
表 2  Table 2
Figure imgf000007_0002
Figure imgf000007_0002
步骤 203、 目标 ASN通过与 G-MS鉴权 ASN ( G-MS Authenticator ASN) 的上 下文请求过程来获取 G-MS的授权密钥上下文， 如果 R4切换请求消息中没有包含 G-MS的鉴权器标识（此时服务 ASN可以作为 G-MS Authenticator ASN)，目标 ASN 发起与服务 ASN的上下文请求过程。  Step 203: The target ASN obtains an authorization key context of the G-MS by using a context request process with a G-MS Authenticator ASN, if the R4 handover request message does not include an authenticator of the G-MS. The identity (in this case, the serving ASN can act as a G-MS Authenticator ASN), and the target ASN initiates a context request procedure with the serving ASN.
步骤 204、 目标 ASN通过与 Host鉴权 ASN ( Host Authenticator ASN) 的上下 文请求过程来获取 Host的授权密钥上下文，如果 R4切换请求消息中没有包含 Host 的鉴权器标识（此时服务 ASN可以作为 Host Authenticator ASN) ， 目标 ASN发起 与服务 ASN的上下文请求过程。  Step 204: The target ASN obtains the authorization key context of the Host by using a context request process of the Host Authenticator ASN. If the R4 handover request message does not include the authenticator identifier of the Host (the service ASN can be used as the service ASN). Host Authenticator ASN), the target ASN initiates a context request procedure with the serving ASN.
步骤 205、 如果目标 ASN获取的 G-MS的上下文信息、 Host的上下文信息、 G-MS的授权密钥上下文信息和 Host的授权密钥上下文信息可用， 则目标 ASN可 发起与锚定 ASN (Anchor ASN) 之间该 G-MS和所属 Host数据通道预建立过程， 该数据通道预建立过程中使用 Host的上下文信息。 具体可以为在数据通道预建立过程中的消息： Path— Reg— Req (数据通道注册请 求） 、 Path— Reg— Rsp (数据通道注册响应） 、 Path— PreReg— Req (数据通道预注册请 求） 或者 Path— PreReg— Rsp (数据通道预注册响应） 中增加字段， 增加字段的定义 同 R4 HO_Req消息中扩展方式类似， 此处不再赘述。 Step 205: If the context information of the G-MS acquired by the target ASN, the context information of the Host, the authorization key context information of the G-MS, and the authorization key context information of the Host are available, the target ASN may initiate and anchor the ASN (Anchor). ASN) Pre-establishment process between the G-MS and the host data channel, the context information of the Host is used in the pre-establishment process of the data channel. Specifically, it may be a message during the data channel pre-establishment process: Path_Reg_Req (data channel registration request), Path_Reg-Rsp (data channel registration response), Path-PreReg-Req (data channel pre-registration request) or Path- PreReg—Rsp (Data Channel Pre-registration Response) adds a field. The definition of the added field is similar to the extension in the R4 HO_Req message, and will not be described here.
步骤 206、 目标 ASN发送 R4 HO_Rsp (切换响应） 消息到服务 ASN来应答切 换请求。  Step 206: The target ASN sends an R4 HO_Rsp (Handover Response) message to the serving ASN to answer the switch request.
步骤 207、 服务 ASN 收到 R4 HO_Rsp 消息， 则发送基站切换响应 (MOB— BSHO-RSP )消息到 G-MS， 该消息可包含一个或多个为 G-MS选择的网络 中可切换的目标基站。  Step 207: The service ASN receives the R4 HO_Rsp message, and sends a base station handover response (MOB_BSHO-RSP) message to the G-MS, where the message may include one or more target base stations that are switchable in the network selected by the G-MS. .
步骤 208、 服务 ASN发送 R4 HO— Ack(切换应答)消息给目标 ASN。  Step 208: The serving ASN sends an R4 HO-Ack (Handover Answer) message to the target ASN.
上述实施例在 G-MS的切换准备阶段时， 将 G-MS的上下文信息和 Host上下文信 息同时传递给网络侧的相关实体， 因此在 G-MS移动时， 目标 ASN同时获取 G-MS的 上下文信息和 Host上下文信息， 并且建立新的空口连接和数据通道， 减少了信令的开 销。  In the handover preparation phase of the G-MS, the foregoing embodiment simultaneously transmits the context information of the G-MS and the Host context information to the related entities on the network side, so when the G-MS moves, the target ASN simultaneously acquires the context of the G-MS. Information and Host context information, and the establishment of new air interface connections and data channels, reducing the overhead of signaling.
Host上下文信息可以包含在 G-MS上下文信息（G-MS上下文信息如上述表 1所示 的 G-MS Info)传递到目标 ASN， 从而目标 ASN可以到鉴权器获取 Host的相关信息， 建立新的空口连接和数据通道， 减少信令的开销。  The Host context information may be included in the G-MS context information (G-MS context information, such as the G-MS Info shown in Table 1 above), to be delivered to the target ASN, so that the target ASN can obtain the relevant information of the Host from the authenticator, and establish a new Air interface connections and data channels reduce signaling overhead.
图 3 为本发明具体实施方式二提供的上下文信息迁移的方法流程图。 该实施例在 G-MS进入切换实施阶段时，通过服务 ASN发送切换确认消息，将 G-MS上下文信息和 Host的上下文信息传递给目标 ASN， 并传递给锚定 ASN。  FIG. 3 is a flowchart of a method for context information migration according to Embodiment 2 of the present invention. In this embodiment, when the G-MS enters the handover implementation phase, the service ASN sends a handover confirmation message, and the G-MS context information and the Host context information are transmitted to the target ASN and transmitted to the anchor ASN.
步骤 301. G-MS发送 MOB— HO— IND (移动台切换指示） 消息到服务 ASN发 起切换过程， 该消息中包含了目标基站标识。  Step 301. The G-MS sends a MOB_HO_IND (Mobile Station Handover Indication) message to the service ASN to initiate a handover procedure, which includes the target base station identity.
步骤 302. 服务 ASN发送 R4 HO_Cnf (切换确认） 消息到目标 ASN， 该消息 包含了 G-MS的上下文信息和 Host的上下文信息。 其中 G-MS 的上下文信息可以 包括： G-MS的 Authenticator ID和 G-MS的锚定 ASN网关标识； Host上下文信息 可以包括： Host的 Authenticator ID， Anchor ASN GW ID ， SF info, Anchor MM Context：。  Step 302. The service ASN sends an R4 HO_Cnf (Handover Confirmation) message to the target ASN, which contains the context information of the G-MS and the context information of the Host. The context information of the G-MS may include: an Authenticator ID of the G-MS and an anchor ASN gateway identifier of the G-MS; the Host context information may include: an Authenticator ID of the Host, an Anchor ASN GW ID, an SF info, an Anchor MM Context: .
为了实现上下文信息的迁移， 可以在 R4 HO— Cnf消息的 G-MS Info TLV中增加一 个或者多个 Host Info TLV, 其定义可以如表 3所示， Host Info如表 4所示。  To implement the migration of context information, you can add one or more Host Info TLVs to the G-MS Info TLV of the R4 HO-Cnf message. The definitions are shown in Table 3. Host Info is shown in Table 4.
表 3 11: M/O N lcs table 3 11: M/ON lcs
HO Type M  HO Type M
G-MS Info M G-MS Info M
>Host Info O One or more >Host Info O One or more
BS Info (Serving) M BS Info (Serving) M
BS Info (Target, one or M Relative Delay, DL/UL PHY Quality Info as BS Info (Target, one or M Relative Delay, DL/UL PHY Quality Info as
more) viewed b y G-MS  More) viewed b y G-MS
AK Context O MAY be included if the Serving ASN retrieves  AK Context O MAY be included if the Serving ASN retrieves
the AK Context for the Target ASN from the  The AK Context for the Target ASN from the
Authentic： atorASN.  Authentic: atorASN.
If not inc luded the Target ASN SHALL retrieve  If not inc luded the Target ASN SHALL retrieve
AK conte xt. 表 4  AK conte xt. Table 4
Figure imgf000009_0001
Figure imgf000009_0001
步骤 303. 目标 ASN发送 HO— Ack (切换应答） 消息到 Serving ASN。  Step 303. The target ASN sends a HO_Ack (Handover Answer) message to the Serving ASN.
步骤 304. 目标 ASN通过与 G-MS Authenticator ASN的上下文请求过程来获取 G-MS的授权密钥上下文，如果 R4 HO— Cnf消息中没有包含 G-MS的鉴权器标识（此 时服务 ASN可以作为 G-MS Authenticator ASN) ， 目标 ASN发起与服务 ASN的上 下文请求过程。  Step 304: The target ASN obtains the authorization key context of the G-MS through the context request process with the G-MS Authenticator ASN, if the R4 HO-Cnf message does not include the authenticator identifier of the G-MS (the service ASN may be As a G-MS Authenticator ASN), the target ASN initiates a context request procedure with the serving ASN.
步骤 305. 目标 ASN通过与 Host Authenticator ASN的上下文请求过程来获取 Host的授权密钥上下文， 如果切换请求消息中没有包含 Host 的鉴权器标识 （此时 服务 ASN可以作为 Host Authenticator ASN) ， 目标 ASN发起与服务 ASN的上下 文请求过程。 Step 305. The target ASN obtains the authorization key context of the Host through the context request process with the Host Authenticator ASN, and if the handover request message does not include the authenticator identifier of the Host (at this time) The service ASN can act as a Host Authenticator ASN), and the target ASN initiates a context request procedure with the serving ASN.
步骤 306. 如果目标 ASN获取的 G-MS的上下文信息、 Host的上下文信息、 G-MS的授权密钥上下文信息和 Host的授权密钥上下文信息可用， 则目标 ASN可 发起与 Anchor ASN之间该 G-MS和所属 Host数据通道预建立过程， 该数据通道预 建立过程中使用 Host的上下文信息。  Step 306. If the context information of the G-MS acquired by the target ASN, the context information of the Host, the authorization key context information of the G-MS, and the authorization key context information of the Host are available, the target ASN may initiate the relationship with the Anchor ASN. The pre-establishment process of the G-MS and the associated Host data channel, the context information of the Host is used in the pre-establishment process of the data channel.
具体可以为在数据通道预建立过程中的消息： Path— Reg— Req、 Path— Reg— Rsp、 Path— PreReg— Req或者 Path— PreReg— Rsp中增加字段，增加字段的定义同 R4 HO_Cnf 消息中扩展方式类似， 此处不再赘述。  Specifically, it may be a message in the pre-establishment process of the data channel: Path_Reg-Req, Path-Reg-Rsp, Path-PreReg-Req or Path-PreReg-Rsp, the field is added, and the definition of the added field is the same as the extension in the R4 HO_Cnf message. The method is similar and will not be described here.
步骤 307. G-MS移动到目标 ASN下， 发起重新入网过程。  Step 307. The G-MS moves to the target ASN and initiates a re-entry procedure.
步骤 308. 目标 ASN发起与 Anchor ASN之间该 G-MS和所属 Host数据通道建 立过程。  Step 308. The target ASN initiates the establishment process of the G-MS and the host data channel between the anchor ASN.
步骤 309. 目标 ASN发起与 G-MS Authenticator ASN之间的 CMAC Key Count ( cipher-based message authentication code Key Count, 基于密文的消息认证码密钢 计数器） 更新过程。  Step 309. The target ASN initiates a CMAC Key Count (cipher-based message authentication code Key Count) update process with the G-MS Authenticator ASN.
步骤 310. 可选的，目标 ASN发起与 Host Authenticator ASN之间的 CMAC Key Count更新过程。  Step 310. Optionally, the target ASN initiates a CMAC Key Count update process with the Host Authenticator ASN.
步骤 31 1. 目标 ASN发送 R4 HO— Complete (切换完成）消息到服务 ASN指示 切换完成。  Step 31 1. The target ASN sends an R4 HO—Complete message to the service ASN indicating that the handover is complete.
上述实施例在 G-MS进入切换实施阶段时， 将 G-MS的上下文信息和 Host上下文 信息同时传递给网络侧的相关实体， 因此在 G-MS移动时， 目标 ASN同时获取 G-MS 的上下文信息和 Host上下文信息的信息， 并且建立新的空口连接和数据通道， 减少了 信令的开销。  In the above embodiment, when the G-MS enters the handover implementation phase, the context information of the G-MS and the Host context information are simultaneously transmitted to the related entities on the network side, so when the G-MS moves, the target ASN simultaneously acquires the context of the G-MS. Information and information about Host context information, and the establishment of new air interface connections and data channels, reducing the overhead of signaling.
图 4为本发明具体实施方式三提供的上下文信息迁移的方法流程图。 该实施例 在 G-MS非完全控制切换过程时， 目标 ASN通过上下文请求的过程从服务 ASN出 同时获取 G-MS的上下文信息和 Host的上下文信息， 并针对 G-MS进行切换。  FIG. 4 is a flowchart of a method for context information migration according to Embodiment 3 of the present invention. In this embodiment, when the G-MS is incompletely controlling the handover process, the target ASN obtains the context information of the G-MS and the context information of the Host from the service ASN through the process of the context request, and performs handover for the G-MS.
步骤 401. G-MS发送 RNG-REQ (测距请求）消息到目标 ASN发起切换过程， 该消息中包含了服务基站标识。  Step 401. The G-MS sends an RNG-REQ (Ranging Request) message to the target ASN to initiate a handover procedure, where the message includes the serving base station identifier.
步骤 402. 目标 ASN发送 Context— req (上下文请求） 消息到服务 ASN。  Step 402. The target ASN sends a Context_req (Context Request) message to the serving ASN.
步骤 403. 服务 ASN返回 context— report (上下文报告） 消息给目标 ASN， 该 消息中包含 G-MS的上下文信息， 同时包含了 Host的上下文信息。 其中 G-MS 的 上下文信息可以包括： G-MS的 Authenticator ID和 G-MS的锚定 ASN网关标识； Host的上下文信息可以包括： Host的 Authenticator ID, Anchor ASN GW ID， SF info, Anchor MM Context等。 Step 403. The service ASN returns a context_report message to the target ASN. The message contains the context information of the G-MS and contains the context information of the Host. The context information of the G-MS may include: an Authenticator ID of the G-MS and an anchor ASN gateway identifier of the G-MS; the context information of the Host may include: an Authenticator ID of the Host, an Anchor ASN GW ID, an SF info, an Anchor MM Context Wait.
为了实现上下文信息的迁移， 在 context— report消息的 G-MS Info TIN中增加一个 或者多个 Host Info TIN, 其定义可以如表 5所示， Host Info如表 6所示： 醒 翻麵  To implement the migration of context information, add one or more Host Info TINs to the G-MS Info TIN of the context_report message, as defined in Table 5. Host Info is shown in Table 6: Wake up
HO Type M  HO Type M
G-MS Info M G-MS Info M
>Host Info O One or more >Host Info O One or more
BS Info (Serving) M BS Info (Serving) M
BS Info (Target, one or M Relative Delay, DL/UL PHY Quality Info| BS Info (Target, one or M Relative Delay, DL/UL PHY Quality Info|
more) as viewed by MS  More) as viewed by MS
AK Context O MAY be included if the Serving ASN  AK Context O MAY be included if the Serving ASN
retrieves the AK Context for the Target  Retrieves the AK Context for the Target
ASN from the Authenticator ASN.  ASN from the Authenticator ASN.
If not included the Target ASN SHALL|  If not included the Target ASN SHALL|
retrieve AK context.  Retrieve AK context.
表 6  Table 6
Figure imgf000011_0001
Figure imgf000011_0001
目标 ASN通过与 G-MS Authenticator ASN的上下文请求过程来获取 G-MS的授权密钥上下文， 如果 context— report消息中没有包含 G-MS的鉴权器标识 (此时服务 ASN可以作为 G-MS Authenticator ASN) ， 目标 ASN发起与服务 ASN 的上下文请求过程。 The target ASN is obtained through the context request process with the G-MS Authenticator ASN. The authorization key context of the G-MS. If the context_report message does not contain the authenticator identifier of the G-MS (the service ASN can be used as the G-MS Authenticator ASN), the target ASN initiates a context request procedure with the serving ASN.
步骤 405. 目标 ASN通过与 Host Authenticator ASN的上下文请求过程来获取 Host的授权密钥上下文，如果 context— report消息中没有包含 Host的鉴权器标识（此 时服务 ASN可以作为 Host Authenticator ASN) ， 目标 ASN发起与服务 ASN的上 下文请求过程。  Step 405. The target ASN obtains the authorization key context of the Host through the context request process with the Host Authenticator ASN. If the context_report message does not include the authenticator identifier of the Host (the service ASN can be used as the Host Authenticator ASN), the target The ASN initiates a context request procedure with the serving ASN.
步骤 406. 如果目标 ASN获取的 G-MS的上下文信息和 Host的上下文信息可 用， 目标 ASN发起与 Anchor ASN之间该 G-MS和所属 Host数据通道建立过程， 该数据通道建立过程中使用 Host的上下文信息。  Step 406. If the context information of the G-MS acquired by the target ASN and the context information of the Host are available, the target ASN initiates a process of establishing the G-MS and the host data channel between the Anchor ASN, and the Host channel is used in the establishment of the data channel. Contextual information.
步骤 407. 目标 ASN发送 RNG-RSP (测距响应） 消息到 G-MS。  Step 407. The target ASN sends an RNG-RSP (Ranging Response) message to the G-MS.
步骤 408. 目标 ASN发起与 G-MS Authenticator ASN之间的 CMAC Key Count 更新过程。  Step 408. The target ASN initiates a CMAC Key Count update procedure with the G-MS Authenticator ASN.
步骤 409. 可选的， 目标 ASN发起与 Host Authenticator ASN之间的 CMAC Key Count更新过程。  Step 409. Optionally, the target ASN initiates a CMAC Key Count update process with the Host Authenticator ASN.
步骤 410. Anchor ASN发起与服务 ASN之间的数据通道注销过程。  Step 410. The Anchor ASN initiates a data channel logoff procedure with the serving ASN.
上述实施例的 G-MS在非完全控制切换过程时，服务 ASN将 G-MS的上下文信 息和 Host上下文信息同时传递给网络侧的相关实体， 因此在 G-MS移动时， 目标 ASN可以一次获取 G-MS的上下文信息和 Host上下文信息， 并且建立新的空口连 接和数据通道， 减少了信令的开销。  When the G-MS of the foregoing embodiment controls the handover process incompletely, the serving ASN simultaneously transmits the context information of the G-MS and the Host context information to the related entity on the network side. Therefore, when the G-MS moves, the target ASN can be acquired at one time. The context information of the G-MS and the Host context information, and the establishment of new air interface connections and data channels, reduce the signaling overhead.
本发明实施例提供了一种接入服务网络， 如图 5所示， 包括接收单元 501和发送单 元 502;  An embodiment of the present invention provides an access service network, as shown in FIG. 5, including a receiving unit 501 and a sending unit 502;
接收单元 501， 用于接收来自 G-MS的第一切换消息， 该第一切换消息为移动台切 换请求消息或移动台切换指示消息；  The receiving unit 501 is configured to receive a first handover message from the G-MS, where the first handover message is a mobile station handover request message or a mobile station handover indication message;
发送单元 502，用于向目标 ASN发送第二切换消息，该第二切换消息中携带有 G-MS 的上下文信息和 Host的上下文信息， 若第一切换消息为移动台切换请求消息时， 第二 切换消息为切换请求消息； 若第一切换消息为移动台切换指示消息时， 第二切换消息为 切换确认消息。  The sending unit 502 is configured to send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host. If the first handover message is a mobile station handover request message, the second The handover message is a handover request message; if the first handover message is a mobile station handover indication message, the second handover message is a handover confirmation message.
本发明实施例还提供了一种接入服务网络， 如图 6所示， 包括第一接收单元 601、 发送单元 602和第二接收单元 603； 第一接收单元 601， 用于接收来自 G-MS的测距请求； The embodiment of the present invention further provides an access service network, as shown in FIG. 6, including a first receiving unit 601, a sending unit 602, and a second receiving unit 603; a first receiving unit 601, configured to receive a ranging request from the G-MS;
发送单元 602， 用于向服务 ASN发送上下文请求消息；  The sending unit 602 is configured to send a context request message to the serving ASN.
第二接收单元 603，用于接收来自服务 ASN的上下文报告消息，该上下文报告消息 中携带有 G-MS的上下文信息和 Host的上下文信息。  The second receiving unit 603 is configured to receive a context report message from the serving ASN, where the context report message carries the context information of the G-MS and the context information of the Host.
本发明实施例提供的接入服务网络还可以进一步包括判断单元 604 和执行单元 The access service network provided by the embodiment of the present invention may further include a determining unit 604 and an execution unit.
605； 605;
判断单元 604用于判断上下文报告消息中携带的 G-MS的上下文信息和 Host的上 下文信息是否可用；  The determining unit 604 is configured to determine whether the context information of the G-MS carried in the context report message and the context information of the Host are available;
执行单元 605用于如果判断单元 604判断上下文报告消息中携带的 G-MS的上下文 信息和 Host的上下文信息可用，发起与锚定接入服务网络的数据通道建立过程，该数 据通道建立过程中使用 Host的上下文信息。  The executing unit 605 is configured to initiate a data channel establishing process with the anchor access service network if the determining unit 604 determines that the context information of the G-MS carried in the context report message and the context information of the Host are available, and the data channel is used in the process of establishing the data channel. Host context information.
本发明实施例提供了一种上下文信息迁移的***， 包括服务 ASN和目标 ASN; 服务 ASN用于接收来自 G-MS的第一切换消息， 该第一切换消息为移动台切换请 求消息或移动台切换指示消息； 服务 ASN向目标 ASN发送第二切换消息， 第二切换消 息中携带有 G-MS的上下文信息和主机 Host的上下文信息， 若第一切换消息为移动台 切换请求消息，第二切换消息为切换请求消息；若第一切换消息为移动台切换指示消息， 第二切换消息为切换确认消息；  The embodiment of the present invention provides a system for context information migration, including a service ASN and a target ASN. The service ASN is configured to receive a first handover message from a G-MS, where the first handover message is a mobile station handover request message or a mobile station. The handover indication message is sent by the service ASN to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host. If the first handover message is a mobile station handover request message, the second handover The message is a handover request message; if the first handover message is a mobile station handover indication message, the second handover message is a handover confirmation message;
目标 ASN用于接收服务 ASN发送的第二切换消息。  The target ASN is configured to receive a second handover message sent by the serving ASN.
上述 Host的上下文信息包括： Host的鉴权器标识， Anchor ASN GW ID， 业务流信 息和锚定移动性管理上下文。  The context information of the foregoing Host includes: an authenticator identifier of the Host, an Anchor ASN GW ID, a service flow information, and an anchor mobility management context.
本发明实施例提供的一种上下文信息迁移的***还进一步包括锚定接入服务网络； 如果目标 ASN接收的第二切换消息中携带的 G-MS的上下文信息和 Host的上 下文信息可用， 目标 ASN发起与锚定接入服务网络的数据通道预建立过程， 在数据通 道预建立过程中使用所述 Host的上下文信息；  The system for context information migration provided by the embodiment of the present invention further includes an anchor access service network; if the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, the target ASN Initiating a data channel pre-establishment process with the anchor access service network, and using the context information of the host in the data channel pre-establishment process;
若第一切换消息为移动台切换指示消息，且如果目标 ASN接收的第二切换消息中 携带的 G-MS的上下文信息和 Host的上下文信息可用， 目标 ASN发起与锚定接入服 务网络的数据通道建立过程， 在数据通道建立过程中使用 Host的上下文信息。  If the first handover message is a mobile station handover indication message, and if the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, the target ASN initiates data with the anchor access service network. The channel establishment process uses the context information of the host during the data channel establishment process.
本发明实施例还提供了一种上下文信息迁移的***， 包括服务 ASN和目标 ASN; 目标 ASN用于接收来自 G-MS的测距请求消息，并向服务 ASN发送上下文请求消 息； 服务 ASN用于接收来自目标 ASN的上下文请求消息， 并向目标 ASN发送上下文 报告消息， 上下文报告消息中携带有 G-MS的上下文信息和主机 Host的上下文信息； 目标 ASN用于接收来自所述服务 ASN的上下文报告消息。 The embodiment of the present invention further provides a system for context information migration, including a service ASN and a target ASN; the target ASN is configured to receive a ranging request message from the G-MS, and send a context request message to the serving ASN; The service ASN is configured to receive a context request message from the target ASN, and send a context report message to the target ASN, where the context report message carries the context information of the G-MS and the context information of the host Host; the target ASN is used to receive the service from the service. ASN's context report message.
上述实施例提供的上下文信息迁移的***还进一步包括锚定接入服务网络； 如果目标 ASN接收的上下文报告消息中携带的 G-MS的上下文信息和 Host的 上下文信息可用， 目标 ASN发起与所述锚定接入服务网络的数据通道建立过程， 在数 据通道建立过程中使用所述 Host的上下文信息。  The system for context information migration provided by the foregoing embodiment further includes an anchor access service network; if the context information of the G-MS and the context information of the host carried in the context report message received by the target ASN are available, the target ASN initiates and The data channel establishment process of the anchor access service network is used, and the context information of the host is used in the data channel establishment process.
本发明实施例提供的一种上下文信息迁移的方法，***和接入服务网络在 G-MS切 换时， 服务 ASN通过一条信令将 G-MS的上下文信息和 Host的上下文信息发送给目标 ASN， 减少了信令的开销。  A method for migrating the context information provided by the embodiment of the present invention, when the system and the access service network are in the G-MS handover, the serving ASN sends the context information of the G-MS and the context information of the host to the target ASN through a signaling. Reduce the overhead of signaling.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通 过程序来指令相关的硬件完成， 所述的程序可以存储于一种计算机可读存储介质中， 该 程序在执行时， 包括如下步骤：  A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. , including the following steps:
接收来自网关移动台 G-MS的第一切换消息；  Receiving a first handover message from the gateway mobile station G-MS;
向目标接入服务网络 ASN发送第二切换消息， 所述第二切换消息中携带有 G-MS 的上下文信息和主机 Host的上下文信息。  Sending a second handover message to the target access service network ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host.
上述提到的存储介质可以是只读存储器， 磁盘或光盘等。  The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
以上举优选的实施例，对本发明的目的、技术方案和优点进行了进一步的详细说明， 所应理解的是， 以上为本发明的优选实施例而已， 并不用以限定本发明， 凡在本发明的 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。  The present invention has been described in detail with reference to the preferred embodiments of the preferred embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求 Rights request
1、 一种上下文信息迁移的方法， 其特征在于， 包括：  A method for migrating context information, comprising:
接收来自网关移动台 G-MS的第一切换消息；  Receiving a first handover message from the gateway mobile station G-MS;
向目标接入服务网络 ASN发送第二切换消息， 所述第二切换消息中携带有 G-MS 的上下文信息和主机 Host的上下文信息。  Sending a second handover message to the target access service network ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host.
2、 如权利要求 1所述的方法， 其特征在于， 所述主机 Host的上下文信息包括： Host 的鉴权器标识， 锚定接入服务网络网关标识， 业务流信息和锚定移动性管理 上下文。  2. The method according to claim 1, wherein the context information of the host Host comprises: an authenticator identifier of the host, an anchor access service network gateway identifier, a service flow information, and an anchor mobility management context. .
3、 如权利要求 1所述的方法， 其特征在于，  3. The method of claim 1 wherein:
所述第一切换消息为移动台切换请求消息， 所述第二切换消息为切换请求消息； 或 所述第一切换消息为移动台切换指示消息， 所述第二切换消息为切换确认消息。 The first handover message is a mobile station handover request message, and the second handover message is a handover request message; or the first handover message is a mobile station handover indication message, and the second handover message is a handover confirmation message.
4、 一种上下文信息迁移的方法， 其特征在于， 包括： A method for migrating context information, comprising:
目标 ASN接收携带有 G-MS的上下文信息和 Host的上下文信息的第二切换消 息，如果所述第二切换消息中携带的 G-MS的上下文信息和 Host的上下文信息可用， 则所述目标 ASN发起与锚定接入服务网络的数据通道建立或预建立过程， 所述数据 通道建立或预建立过程中使用所述 Host的上下文信息。  The target ASN receives the second handover message carrying the context information of the G-MS and the context information of the host. If the context information of the G-MS carried in the second handover message and the context information of the Host are available, the target ASN Initiating a data channel establishment or pre-establishment process with the anchor access service network, wherein the context information of the Host is used in the data channel establishment or pre-establishment process.
5、 如权利要求 4 所述的方法， 其特征在于， 所述第二切换消息为切换请求消 息或切换确认消息；  The method according to claim 4, wherein the second handover message is a handover request message or a handover confirmation message;
所述第二切换消息为切换确认消息时， 所述方法包括：  When the second handover message is a handover confirmation message, the method includes:
目标 ASN接收携带有 G-MS的上下文信息和 Host的上下文信息的切换确认消 息，如果所述切换确认消息中携带的 G-MS的上下文信息和 Host的上下文信息可用， 则所述目标 ASN发起与锚定接入服务网络的数据通道建立过程，所述数据通道建立 过程中使用所述 Host的上下文信息。  The target ASN receives the handover confirmation message carrying the context information of the G-MS and the context information of the Host. If the context information of the G-MS and the context information of the Host carried in the handover confirmation message are available, the target ASN initiates and The data channel establishment process of the access service network is anchored, and the context information of the host is used in the data channel establishment process.
6、 一种上下文信息迁移的方法， 其特征在于， 包括：  6. A method for migrating context information, characterized by comprising:
接收来自 G-MS的测距请求消息；  Receiving a ranging request message from the G-MS;
向服务 ASN发送上下文请求消息；  Sending a context request message to the serving ASN;
接收来自所述服务 ASN的上下文报告消息， 所述上下文报告消息中携带有 G-MS 的上下文信息和主机 Host的上下文信息。  Receiving a context report message from the serving ASN, where the context report message carries context information of the G-MS and context information of the host Host.
7、 如权利要求 6所述的方法， 其特征在于所述方法还进一步包括：  7. The method of claim 6 wherein the method further comprises:
如果接收的上下文报告消息中携带的 G-MS的上下文信息和 Host的上下文信息 可用，则发起与锚定接入服务网络的数据通道建立过程，所述数据通道建立过程中使用 所述 Host的上下文信息。 If the context information of the G-MS carried in the received context report message and the context information of the Host If available, a data channel establishment process is initiated with the anchor access service network, and the context information of the Host is used in the data channel establishment process.
8、 一种接入服务网络， 其特征在于， 包括：  8. An access service network, characterized by comprising:
接收单元， 用于接收来自 G-MS的第一切换消息；  a receiving unit, configured to receive a first switching message from the G-MS;
发送单元，用于向目标 ASN发送第二切换消息，所述第二切换消息中携带有 G-MS 的上下文信息和 Host的上下文信息。  And a sending unit, configured to send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host.
9、 一种接入服务网络， 其特征在于， 包括：  9. An access service network, characterized by comprising:
第一接收单元， 用于接收来自 G-MS的测距请求；  a first receiving unit, configured to receive a ranging request from the G-MS;
发送单元， 用于向服务 ASN发送上下文请求消息；  a sending unit, configured to send a context request message to the serving ASN;
第二接收单元， 用于接收来自服务 ASN的上下文报告消息， 所述上下文报告消息 中携带有 G-MS的上下文信息和 Host的上下文信息。  The second receiving unit is configured to receive a context report message from the serving ASN, where the context report message carries context information of the G-MS and context information of the host.
10、 如权利要求 9所述的接入服务网络， 其特征在于， 还包括：  The access service network of claim 9, further comprising:
判断单元， 用于判断所述上下文报告消息中携带的 G-MS的上下文信息和 Host的 上下文信息是否可用；  a determining unit, configured to determine whether context information of the G-MS carried in the context report message and context information of the Host are available;
执行单元，用于如果所述判断单元判断所述上下文报告消息中携带的 G-MS的上下 文信息和 Host的上下文信息可用，发起与锚定接入服务网络的数据通道建立过程，所 述数据通道建立过程中使用所述 Host的上下文信息。  An execution unit, configured to initiate a data channel establishment process with the anchor access service network, if the determining unit determines that the context information of the G-MS carried in the context report message and the context information of the Host are available, the data channel The context information of the Host is used in the establishment process.
11、 一种上下文信息迁移的***， 其特征在于， 包括：  11. A system for context information migration, comprising:
服务 ASN，用于接收来自 G-MS的第一切换消息， 向目标 ASN发送第二切换消息， 所述第二切换消息中携带有 G-MS的上下文信息和主机 Host的上下文信息；  The serving ASN is configured to receive a first handover message from the G-MS, and send a second handover message to the target ASN, where the second handover message carries the context information of the G-MS and the context information of the host Host.
所述目标 ASN， 用于接收所述服务 ASN发送的第二切换消息。  The target ASN is configured to receive a second handover message sent by the serving ASN.
12、 如权利要求 11所述的***， 其特征在于， 所述***还进一步包括锚定接入服 务网络；  12. The system of claim 11 wherein the system further comprises an anchor access service network;
如果所述目标 ASN接收的所述第二切换消息中携带的 G-MS的上下文信息和 Host的上下文信息可用， 所述锚定接入服务网络用于与所述目标 ASN进行数据通道 预建立， 所述数据通道预建立过程中使用所述 Host的上下文信息； 或者  And if the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, the anchor access service network is configured to perform data channel pre-establishment with the target ASN, Using the context information of the Host in the data channel pre-establishment process; or
若所述目标 ASN接收的第二切换消息为切换确认消息且所述目标 ASN接收的所 述第二切换消息中携带的 G-MS的上下文信息和 Host的上下文信息可用， 所述锚定 接入服务网络用于与所述目标 ASN进行数据通道建立， 所述数据通道建立过程中使用 所述 Host的上下文信息。 And if the second handover message received by the target ASN is a handover confirmation message, and the context information of the G-MS and the context information of the host carried in the second handover message received by the target ASN are available, the anchor access The service network is configured to establish a data channel with the target ASN, and the context information of the host is used in the data channel establishment process.
13、 一种上下文信息迁移的***， 其特征在于， 包括： 13. A system for context information migration, comprising:
目标 ASN， 用于接收来自 G-MS的测距请求消息， 并向服务 ASN发送上下文请求 消息；  a target ASN, configured to receive a ranging request message from the G-MS, and send a context request message to the serving ASN;
所述服务 ASN，用于接收来自所述目标 ASN的上下文请求消息，并向所述目标 ASN 发送上下文报告消息， 所述上下文报告消息中携带有 G-MS 的上下文信息和主机 Host 的上下文信息；  The service ASN is configured to receive a context request message from the target ASN, and send a context report message to the target ASN, where the context report message carries context information of the G-MS and context information of the host Host;
所述目标 ASN， 还用于接收来自所述服务 ASN的上下文报告消息。  The target ASN is further configured to receive a context report message from the serving ASN.
14、 如权利要求 13所述的***， 其特征在于， 所述***还进一步包括锚定接入服 务网络；  14. The system of claim 13 wherein the system further comprises an anchor access service network;
如果目标 ASN接收的上下文报告消息中携带的 G-MS的上下文信息和 Host的 上下文信息可用， 所述锚定接入服务网络用于与所述目标 ASN进行数据通道建立， 所 述数据通道建立过程中使用所述 Host的上下文信息。  If the context information of the G-MS and the context information of the host carried in the context report message received by the target ASN are available, the anchor access service network is configured to establish a data channel with the target ASN, where the data channel is established. The context information of the Host is used.
PCT/CN2009/071275 2008-06-30 2009-04-15 Method and system for transfering context information, and access service network WO2010000150A1 (en)

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