WO2009036647A1 - Procédé de libération de session de transmission de données par paquet, destiné à un réseau d'accès mobile à ultra large bande - Google Patents

Procédé de libération de session de transmission de données par paquet, destiné à un réseau d'accès mobile à ultra large bande Download PDF

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Publication number
WO2009036647A1
WO2009036647A1 PCT/CN2008/000604 CN2008000604W WO2009036647A1 WO 2009036647 A1 WO2009036647 A1 WO 2009036647A1 CN 2008000604 W CN2008000604 W CN 2008000604W WO 2009036647 A1 WO2009036647 A1 WO 2009036647A1
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WO
WIPO (PCT)
Prior art keywords
message
session
tunnel
proxy mobile
access gateway
Prior art date
Application number
PCT/CN2008/000604
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English (en)
French (fr)
Inventor
Xiaowu Zhao
Kexue Lu
Yuanfang Yu
Original Assignee
Zte Corporation
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
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to US12/678,749 priority Critical patent/US8274982B2/en
Publication of WO2009036647A1 publication Critical patent/WO2009036647A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release
    • H04W76/32Release of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04Network layer protocols, e.g. mobile IP [Internet Protocol]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18Service support devices; Network management devices
    • H04W88/182Network node acting on behalf of an other network entity, e.g. proxy

Definitions

  • the present invention relates to the field of communications, and more particularly to a packet data session release method for an ultra mobile broadband access network.
  • UMB Ultra Mobile Broadband
  • BACKGROUND In a UMB session release operation caused by a packet data session release in an Ultra Mobile Broadband (UMB) access network, there is a flow as shown in FIG. 1.
  • AT Access Terminal
  • AGW Access Gateway
  • DAP Data Attachment Point
  • PMIP Packet Control Protocol
  • SRNC Session Reference Network Controller
  • the SRNC sends a session release message to notify all Evolved Base Station (eBS) sessions in its routing set that the session has been released.
  • the evolved base station sends a confirmation message to confirm receipt of the session release message.
  • eBS Evolved Base Station
  • the release process it is assumed that there is only a PMIP tunnel between the DAP and the AGW, and in fact, any one eBS in the route set of the access terminal of the access network may have a reverse PMIP tunnel with the AGW. Therefore, in the UMB session release process caused by the release of the packet data session, multiple PMIP tunnels need to be considered, and the process of session release is improved.
  • each access terminal has a set, and the members of the route set are a set of access route instances, because each SRNC or evolved base station has a route instance with the access terminal, respectively,
  • the routing set members of the access terminal are the SRNC and the evolved base station.
  • Packet data session release party for ultra mobile broadband access network includes the following steps: S202: When releasing a packet data session, the access gateway sends a proxy mobile IP registration revocation message to a data binding point in the ultra mobile broadband access network; S204, the data binding point receives the proxy mobile IP address After registering the revocation message, sending a proxy mobile IP registration back confirmation message to the access gateway to confirm that it has received the proxy mobile IP registration revocation message; S206, the data binding point sends an IP tunnel notification message to the session reference network controller to notify the session The reference network controller packet data session has been released; S208, after receiving the IP tunnel notification message, the session reference network controller sends an IP tunnel notification confirmation message to the data binding point to confirm that it has received the IP tunnel notification message, and triggers the ultra mobile The broadband session is released, and the session release message is sent to the access group member and the data binding point of the access terminal.
  • the route set member and the data binding point respectively send a session release confirmation message to the reference network controller.
  • the pre/reverse in the route set member Evolved base station sends a charging request message to the access gateway; back, and S214, the access gateway receives the charging request message, the forward / reverse evolved base station returns a charging response message.
  • the data binding point if the data binding point is also a member of the routing set of the access terminal, the data binding point also sends an IP tunnel notification release message to other routing set members of the access terminal, and receives other routes of the access terminal. The IP tunnel notification confirmation message fed back to the member.
  • the non-data binding point in the routing set member that has the reverse proxy mobile IP tunnel with the access gateway automatically releases the reverse proxy mobile IP tunnel after receiving the session release message.
  • the access gateway starts a first timer of a specific duration while sending the proxy mobile IP registration revocation message to the data binding point, so that the proxy mobile IP registration revocation confirmation message is not received within a specific duration.
  • the data binding point starts a second timer of a specific duration while transmitting the IP tunnel notification message to the session reference network controller and/or the pre/reverse evolved base station Resending to the session reference network controller and/or the pre/reverse evolved base station if the IP tunnel notification confirmation message of the session reference network controller and/or the pre/reverse evolved base station is not received within a certain length of time
  • the IP tunnel notification message; the pre- or reverse-evolutionary base station in the routing set member sends a charging request message to the access gateway, and starts a third timer of a specific duration to not receive the charging within a specific duration. In the case of a response message, the charging request message is resent to the access gateway.
  • Another method for releasing a packet data session for an ultra mobile broadband access network includes the following steps: S402: When releasing a packet data session, the access gateway separately sends a proxy mobile IP to the super mobile station. Registering the revocation message; S404, the data binding point and the evolved base station having the proxy mobile IP tunnel with the access gateway receiving the proxy mobile IP registration revocation message, respectively deleting the a proxy mobile IP tunnel with the access gateway, and respectively sending a proxy mobile IP registration revocation confirmation message to the access gateway to confirm that it has received the proxy mobile IP registration request message; S406, the data binding point to the session reference network controller An IP tunnel notification message is sent to inform the session that the network controller packet data session has been released.
  • the session reference network controller may release the ultra mobile broadband session or release the ultra mobile broadband session after the packet data session has been released.
  • the access gateway sends a proxy mobile IP registration revocation message to the data binding point and the evolved base station with the reverse proxy mobile IP tunnel of the access gateway, respectively, and starts a first timer of a specific duration to be specific If the proxy mobile IP registration withdrawal confirmation message is not received within the duration, the proxy mobile IP registration revocation message is resent to the data binding point or the evolved base station with the reverse proxy mobile IP tunnel with the access gateway.
  • the data binding point starts a second timer of a specific duration while sending the IP tunnel notification message to the session reference network controller, so as to re-receive the response message of the session reference network controller within a certain length of time, Send an IP tunnel pass message to the session reference network controller.
  • the invention improves the access release function of the access network supporting the UMB technology, thereby perfecting the function of the entire network.
  • FIG. 1 is a schematic flowchart of a UMB session release process in the prior art
  • FIG. 2 is a flowchart of a packet data session release process for an ultra mobile broadband access network according to an embodiment of the present invention
  • 3 is a flow diagram showing a process of releasing a packet data session when a plurality of PMIP tunnels exist in the process shown in FIG. 2, resulting in a UMB session release process
  • FIG. 4 is a diagram of an ultra mobile broadband access network according to another embodiment of the present invention.
  • FIG. 5 is a packet session with multiple PMIP tunnels initiated by the AGW including the procedure shown in FIG. Release the schematic diagram of the process that causes the UMB session release process.
  • FIG. 2 a packet data session release procedure for an ultra mobile broadband access network in accordance with one embodiment of the present invention is illustrated. As shown in FIG.
  • the session release process includes the following steps: S202: When releasing a packet data session, the access gateway sends a proxy mobile IP registration revocation message to a data binding point in the ultra mobile broadband access network; S204, data After receiving the proxy mobile IP registration revocation message, the binding point sends a proxy mobile IP registration revocation confirmation message to the access gateway to confirm that it has received the proxy mobile IP registration return message; S206, the data binding point sends to the session reference network controller IP tunnel notification message to notify the session reference network controller that the packet data session has been released; S208, after receiving the IP tunnel notification message, the session reference network controller sends an IP tunnel notification confirmation message to the data binding point to confirm that it has received the IP The tunnel notification message, and triggers the release of the super mobile broadband session, and sends a session release message to the routing set member and the data binding point of the access terminal; S210, after receiving the session release message, the routing set member and the data binding point respectively refer to the reference The network controller sends a session dry release confirmation message to confirm that it has received
  • step S206 if the data binding point is also a member of the routing set of the access terminal, the data binding point sends an IP tunnel notification release message to other routing set members of the access terminal, and receives other routing sets of the access terminal.
  • the IP tunnel notification confirmation message sent back to the member.
  • the non-data binding point in the routing set member that has the reverse proxy mobile ip tunnel with the access gateway automatically releases the reverse proxy mobile IP tunnel after receiving the session release message.
  • the access gateway initiates the proxy mobile IP registration: when the reply message is sent to the data binding point, the first timer of a specific duration is started, so that the proxy mobile IP registration withdrawal confirmation message is not received within a specific duration.
  • the data binding point starts the second timing of the specific duration while transmitting the IP tunnel notification message to the session reference network controller and/or the pre/reverse evolved base station Retransmitting the IP tunnel to the session reference network controller and/or the pre/reverse evolved base station without receiving the response message of the session reference network controller and/or the pre/reverse evolved base station within a certain length of time a notification message; the pre/reverse evolved base station starts a third timer of a specific duration while transmitting the charging request message to the access gateway, so that the access gateway charging response message is not received within a specific duration , re-access to the access gateway Send a charging request message.
  • the session release process includes the following steps:
  • S302 there is a pre-reverse preferred PMIP tunnel between the DAP and the AGW, and the AT and the AGW are performing data transmission.
  • S304 there is a reverse PMIP tunnel between the eBS1/FLSE/RLSE and the AGW for reverse data transmission.
  • the AGW sends a PMIP-registration revocation message to the DAP, and sets a timer Trrv-pmip.
  • the DAP sends an IP tunnel (IPT) to notify the SRNC that the packet data session has been released and sets a timer Tpdsr-ipt.
  • IPT IP tunnel
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-Notification Confirmation message to the DAP, and the DAP stops the timer Tpdsr-ipt after receiving the confirmation message. S314. If the DAP is in the route set of the AT, the DAP sends an IP tunneling (IPT) to the SRNC, indicating that the packet data session has been released, and setting the timer Tpdsr-ipt.
  • IPT IP tunneling
  • the SRNC After receiving the IPT-notification message, the SRNC sends an IPT-Notification Confirmation message to the DAP. After receiving the confirmation message, the DAP stops the timer Tpdsr-ipt S318. After receiving the IPT-Notification message, the SRNC may decide to initiate the release of the UMB session. After the SRNC releases the UMB session with the AT, the SRNC sends an Access Network Route Instance (ANRI) and DAP to the IAS in the route set. - Session release message.
  • ANRI Access Network Route Instance
  • SRNC sends an IAS-session release message to eBSl/FLSE/RLSE, and sets the timer Tsr-iaS o
  • the eBS1/FLSE/RLSE After receiving the IAS-session release message, the eBS1/FLSE/RLSE sends an IAS-session release confirmation message to the SR C, and the SRNC stops the timer Tsr-ias after receiving the confirmation message.
  • S324 The SRNC sends an IAS-session release message to the DAP, and sets a timer Tsr-ias.
  • the DAP After receiving the IAS-session release message, the DAP sends an IAS-session release confirmation message to the SRNC, and the SRNC stops the timer Tsr-ias after receiving the confirmation message.
  • step S328 If the DAP previously creates an airlink record for the access terminal, the DAP sends a charging request (intermediate) message to the AGW, and starts the timer Tact. This step can occur after step S310.
  • S330 The AGW sends an accounting response message to the DAP, and after receiving the message, the DAP stops the timer Tact.
  • eBS1/FLSE/RLSE sends an accounting request message to the AGW, and starts a timer Tact. This step may occur after step S316.
  • the AGW sends a charging response message to the eBS1/FLSE/RLSE, and after receiving the message, the eBS1/FLSE/RLSE stops the timer Tact.
  • the session release process includes the following steps: S402: When releasing a packet data session, the access gateway respectively has a reverse proxy mobility to a data binding point in the ultra mobile broadband access network and to the access gateway.
  • the evolved base station of the IP tunnel sends a proxy mobile IP registration revocation message; S404, the data binding point and the evolved base station with the proxy mobile IP tunnel of the access gateway receive the proxy mobile IP registration revocation message, and then delete the access mobile gateway and the access gateway respectively.
  • the proxy mobile IP tunnel and respectively send a proxy mobile IP registration t back confirmation message to the access gateway to confirm that it has received the proxy mobile IP registration request message; S406, the data binding point sends an IP tunnel to the session reference network controller A notification message to notify the session reference network controller that the packet data session has been released.
  • the session reference network controller may release the ultra mobile broadband session after receiving the IP tunnel notification message that the packet data session has been released, or may not release the ultra mobile broadband session.
  • the access gateway sends a proxy mobile IP registration revocation message to the data binding point and the evolved base station with the reverse proxy mobile IP tunnel of the access gateway, respectively, and starts a first timer of a specific duration to be specific. If the proxy mobile IP registration withdrawal confirmation message is not received within the duration, the proxy mobile IP registration revocation message is resent to the data binding point or the evolved base station with the reverse proxy mobile IP tunnel with the access gateway.
  • the data binding point starts a second timer of a specific duration while sending the IP tunnel notification message to the session reference network controller, so as to not receive the response message of the session reference network controller within a certain length of time, Send an IP tunnel notification message to the session reference network controller.
  • FIG. 5 a process of releasing a UMB session caused by an AGW-initiated packet session release with multiple PMIP tunnels including the process shown in FIG. 4 will be described. As shown in Figure 5, the session release process packs the following steps:
  • S504 the eBS1 and the AGW have a reverse PMIP tunnel, which can be used for reverse data transmission.
  • S506 AGW sends a PMIP-registration revocation message to the DAP, and sets a timer
  • the AGW sends a PMIP-registration revocation message to eBS1, and sets a timer Trrv-pmip.
  • this process assumes that the DAP is not in the route set of the AT.
  • the DAP sends an IP tunnel (IPT) to notify the SRNC.
  • IPT IP tunnel
  • the packet data session has been released and the timer Tpdsr-ipt is set.
  • the SRNC may decide to initiate the UMB session release. Put it. After the SR C releases the UMB ⁇ " with the AT, the SRNC sends an IAS-Session Release message to all Access Network Route Instances (ANRIs) in its routing set. S520, SRNC to eBS]/FLSE/RLSE Send an IAS - Session Release message and set the timer Tsr-ias.
  • ANRIs Access Network Route Instances
  • the eBS1/FLSE/RLSE After receiving the IAS-session release message, the eBS1/FLSE/RLSE sends an IAS-session release confirmation message to the SRNC, and the SRNC stops the timer Tsr-ias after receiving the confirmation message.
  • S526 The AGW sends an accounting response message to the DAP, and after receiving the message, the DAP stops the timer Tact.
  • eBSl/FLSE/RLSE sends an accounting request message to the AGW, and starts the timer Tact. This step can occur any time after step S520.
  • the AGW sends a charging response message to the eBS1/FLSE/RLSE, and after receiving the message, the eBS1/FLSE/RLSE stops the timer Tact.
  • the present invention is directed to the current situation in which the UMB session release process caused by the release of the packet data session in the current UMB access network technology does not consider the situation of multiple PMIP tunnels, and proposes a session release process for multiple PMIP tunnels, which is improved. Session release process of UMB access network technology.

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  • Computer Networks & Wireless Communication (AREA)
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Description

用于超移动宽带接入网的
分组数据^^释放方法 技术领域 本发明涉及通信领域,更具体地涉及一种用于超移动宽带接入网的分组 数据会话释放方法。 背景技术 在超移动宽带 ( Ultra Mobile Broadband, 简称 UMB )接入网的因为分 组数据会话释放导致的 UMB会话释放操作中, 有如图 1所示的流程。 对于 激活状态下的接入终端 (Access Terminal, 简称 AT ), 当接入网关 (Access Gateway, 简称 AGW )释放分组数据会话时, 向数据绑定点( Data Attachment Point, 简称 DAP )发送代理移动 IP ( Proxy Mobile IP, 简称 PMIP )登记撤 回消息, DAP 通知会话参考网络控制器 ( Session Reference Network Controller, 简称 SRNC ) 分組数据会话已经释放。 这可以导致会话参考网络 控制器 ( Session Reference Network Controller, 简称 SRNC ) 决定释放和 AT 的空中接口会话。 空中接口会话释放后, SRNC发送会话释放消息通知其路 由集中的所有演进基站 (Evolved Base Station, 简称 eBS ) 会话已释放。 演 进基站发送证实消息以确认收到了会话释放消息。 在该释放流程中, 假设只 有 DAP与 AGW之间存在 PMIP隧道, 而实际上, 在接入网申的接入终端的 路由集中任何一个 eBS都可能与 AGW之间存在反向 PMIP隧道。 因此, 在 分组数据会话释放导致的 UMB会话释放流程中需要考虑多个 PMIP隧道的 情况, 完善会话释放的流程。 需要说明的是, 在 UMB中, 每个接入终端都有一个 由集, 路由集的 成员是接入路由实例的集合, 因为每个 SRNC或演进基站分别和接入终端有 一个路由实例, 因此接入终端的路由集成员是 SRNC和演进基站。 发明内容 鉴于以上所述的一个或多个问题, 本发明提供了一种用于激活接入终端 的超移动宽带会话释放方法。 根据本发明实施例的一种用于超移动宽带接入网的分组数据会话释放方 法, 包括以下步骤: S202, 当释放分组数据会话时, 接入网关向超移动宽带 接入网中的数据绑定点发送代理移动 IP登记撤回消息; S204, 数据绑定点收 到代理移动 IP登记撤回消息后, 向接入网关发送代理移动 IP登记 回证实 消息以确认其接收到了代理移动 IP登记撤回消息; S206, 数据绑定点向会话 参考网络控制器发送 IP隧道通知消息,以通知会话参考网络控制器分组数据 会话已经释放; S208, 会话参考网络控制器收到 IP隧道通知消息后, 向数据 绑定点发送 IP隧道通知证实消息以确认其接收到了 IP隧道通知消息, 并触 发超移动宽带会话释放, 发送会话释放消息给接入终端的路由集成员和数据 绑定点; S210, 路由集成员和数据绑定点收到会话释放消息后, 分别向参考 网络控制器发送会话释放证实消息以确认其接收到了会话释放消息; S212 , 路由集成员中的前 /反向演进基站向接入网关发送计费请求消息; 以及 S214, 接入网关收到计费请求消息后, 向前 /反向演进基站返回计费响应消息。 其中, 在步骤 S206, 如果数据绑定点也是接入终端的路由集成员, 则数 据绑定点也向接入终端的其他路由集成员发送 IP隧道通知释放消息,并接收 接入终端的其他路由集成员反馈给其的 IP隧道通知证实消息。路由集成员中 的与接入网关存在反向代理移动 IP 隧道的非数据绑定点收到会话释放消息 之后, 自动释放反向代理移动 IP隧道。 其中, 接入网关在将代理移动 IP 登记撤回消息发送至数据绑定点的同 时, 启动特定时长的第一定时器, 以在特定时长内没有接收到代理移动 ip登 记撤回证实消息的情况下, 重新向绑定点发送代理移动 IP登记撤回消息; 数 据绑定点在将 IP隧道通知消息发送至会话参考网络控制器和 /或前 /反向演进 基站的同时, 启动特定时长的第二定时器, 以在特定时长内没有接收到会话 参考网络控制器和 /或前 /反向演进基站的 IP隧道通知证实消息的情况下, 重 新向会话参考网络控制器和 /或前 /反向演进基站发送 IP隧道通知消息; 上述 路由集成员中的前 /反向演进基站在将计费请求消息发送至接入网关的同时, 启动特定时长的第三定时器, 以在特定时长内没有接收到计费响应消息的情 况下, 重新向接入网关发送计费请求消息。 根据本发明实施例的另一种用于超移动宽带接入网的分组数据会话释放 方法, 包括以下步骤: S402, 当释放分组数据会话时, 接入网关分别向超移 进基站发送代理移动 IP登记撤回消息; S404 , 数据绑定点和与接入网关存在 代理移动 IP隧道的演进基站收到代理移动 IP登记撤回消息后, 分别删除其 与接入网关之间的代理移动 IP隧道, 并分别向接入网关发送代理移动 IP登 记撤回证实消息以确认其接收到了代理移动 IP登记请求消息; S406,数据绑 定点向会话参考网络控制器发送 IP隧道通知消息,以通知会话参考网络控制 器分组数据会话已经释放。 会话参考网络控制器收到 IP 隧道通知消息得知分组数据会话已经释放 后, 可以释放超移动宽带会话, 也可以不释放超移动宽带会话。 其中, 接入 网关在将代理移动 IP 登记撤回消息分别发送至数据绑定点和与接入网关存 在反向代理移动 IP隧道的演进基站的同时, 启动特定时长的第一定时器, 以 在特定时长内没有接收到代理移动 IP登记撤回证实消息的情况下,重新向数 据绑定点或与接入网关存在反向代理移动 IP 隧道的演进基站发送代理移动 IP登记撤回消息。 数据绑定点在将 IP 隧道通知消息发送至会话参考网络控 制器的同时, 启动特定时长的第二定时器, 以在特定时长内没有接收到会话 参考网络控制器的响应消息的情况下,重新向会话参考网络控制器发送 IP隧 道通 ^^消息。 本发明完善了支持 UMB技术的接入网会话释放功能, 进而完善了整个 网络的功能。 附图说明 此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是现有技术中的 UMB会话释放过程的流程示意图; 图 2 是根据本发明的一个实施例的用于超移动宽带接入网的分组数据 会话释放过程的流程图; 图 3是包含图 2所示过程的存在多个 PMIP隧道时的分组数据会话释放 导致 UMB会话释放过程的流程示意图; 图 4 是根据本发明的另一个实施例的用于超移动宽带接入网的分组数 据会话释放过程的流程图; 以及 图 5是包含图 4所示过程的 AGW发起的存在多 PMIP隧道的分组会话 释放导致 UMB会话释放过程的流程示意图。 具体实施方式 下面参考附图, 详细说明本发明的具体实施方式。 参考图 2, 说明根据本发明的一个实施例的用于超移动宽带接入网的分 组数据会话释放过程。 如图 2所示, 该会话释放过程包括以下步骤: S202, 当释放分组数据会话时, 接入网关向超移动宽带接入网中的数据绑定点发送 代理移动 IP登记撤回消息; S204, 数据绑定点收到代理移动 IP登记撤回消 息后,向接入网关发送代理移动 IP登记撤回证实消息以确认其接收到了代理 移动 IP登记 回消息; S206 , 数据绑定点向会话参考网络控制器发送 IP隧 道通知消息, 以通知会话参考网络控制器分组数据会话已经释放; S208, 会 话参考网络控制器收到 IP隧道通知消息后, 向数据绑定点发送 IP隧道通知 证实消息以确认其接收到了 IP隧道通知消息, 并触发超移动宽带会话释放, 发送会话释放消息给接入终端的路由集成员和数据绑定点; S210, 路由集成 员和数据绑定点收到会话释放消息后, 分别向参考网络控制器发送会话幹放 证实消息以确认其接收到了会话释放消息; S212, 路由集成员中的前 /反向演 进基站向接入网关发送计费请求消息; 以及 S214, 接入网关收到计费请求消 息后, 向前 /反向演进基站返回计费响应消息。 其中, 在步骤 S206, 如果数据绑定点也是接入终端的路由集成员, 则数 据绑定点向接入终端的其他路由集成员发送 IP隧道通知释放消息,并接收接 入终端的其他路由集成员反馈给其的 IP隧道通知证实消息。 另外, 路由集成 员中的与接入网关存在反向代理移动 ip 隧道的非数据绑定点收到会话释放 消息之后, 自动释放反向代理移动 IP隧道。 其中, 接入网关在将代理移动 IP登记 :回消息发送至数据绑定点的同 时, 启动特定时长的第一定时器, 以在特定时长内没有接收到代理移动 IP登 记撤回证实消息的情况下, 重新向绑定点发送代理移动 IP登记撤回消息; 数 据绑定点在将 IP隧道通知消息发送至会话参考网络控制器和 /或前 /反向演进 基站的同时, 启动特定时长的第二定时器, 以在特定时长内没有接收到会话 参考网络控制器和 /或前 /反向演进基站的响应消息的情况下, 重新向会话参 考网络控制器和 /或前 /反向演进基站发送 IP隧道通知消息; 前 /反向演进基站 在将计费请求消息发送至接入网关的同时, 启动特定时长的第三定时器, 以 在特定时长内没有接收到接入网关计费响应消息的情况下, 重新向接入网关 发送计费请求消息。 参考图 3 , 说明包含图 2所示过程的存在多个 PMIP隧道时的分组数据 会话释放导致 UMB会话释放的过程。 其中, 除了 DAP与 AGW之间存在反 向 PMIP隧道外, eBSl (可以是反向月 务演进基站( Reverse Link Serving eBS, 简称 RLSE ), 也可以不是 RLSE ) 与 AGW之间也存在反向 PMIP隧道, 本 例假设此 eBS是前反向服务 eBS或者前向服务 eBS。 如图 3所示, 该会话释 放过程包括以下步骤:
S302 , DAP与 AGW之间存在前反向即首选 PMIP隧道, AT与 AGW 正在进行数据传输。 S304, eBSl/FLSE/RLSE与 AGW之间存在反向 PMIP隧道, 用于进行 反向数据传输。
S306 , AGW 给 DAP 发送 PMIP -登记撤回消息, 并设置定时器 Trrv-pmip。
S308, 4t到 PMIP -登 ¾牧回消息, DAP给 AGW发送 PMIP - t回证 实消息。 AGW停止定时器 Trrv-pmip。
S310, DAP发送 IP隧道( IP Tunneling,简称 IPT ) -通知消息给 SRNC, 表示分组数据会话已经被释放, 并设置定时器 Tpdsr-ipt。
S312,收到 IPT -通知消息后, SRNC给 DAP发送 IPT -通知证实消息, DAP收到证实消息后停止定时器 Tpdsr-ipt。 S314, 如果 DAP在 AT的路由集中, DAP发送 IP隧道( IP Tunneling, 简称 IPT ) -通知消息给 SRNC, 表示分组数据会话已经被释放, 并设置定 时器 Tpdsr-ipt。
S316 ,收到 IPT -通知消息后, SRNC给 DAP发送 IPT -通知证实消息, DAP收到证实消息后停止定时器 Tpdsr-ipt S318 , 收到 IPT -通知消息后, SRNC可以决定发起 UMB会话释放。 在 SRNC释放与 AT的 UMB会话后, SRNC给它路由集中的所有接入 网络路由实例( Access Network Route Instance,简称 ANRI )和 DAP发送 IAS -会话释放消息。
S320 , SRNC给 eBSl/FLSE/RLSE发送 IAS -会话释放消息, 并设置定 时器 Tsr-iaS o
S322,收到 IAS -会话释放消息后, eBSl/FLSE/RLSE给 SR C发送 IAS -会话释放证实消息, SRNC收到证实消息后停止定时器 Tsr-ias。
S324 , SRNC给 DAP发送 IAS -会话释放消息, 并设置定时器 Tsr-ias。
S326, 收到 IAS -会话释放消息后, DAP给 SRNC发送 IAS -会话释 放证实消息, SRNC收到证实消息后停止定时器 Tsr-ias。
S328 ,如果 DAP之前为接入终端创建了空中链路记录,则 DAP向 AGW 发送计费请求(中间)消息,并启动定时器 Tact。该步骤可以发生在步骤 S310 之后。
S330 , AGW向 DAP发送计费响应消息, 收到该消息后, DAP停止定 时器 Tact。
S332 , eBSl/FLSE/RLSE 向 AGW 发送计费请求消息, 并启动定时器 Tact. 该步骤可以发生在步骤 S316之后。
S334, AGW向 eBSl/FLSE/RLSE发送计费响应消息, 收到该消息后, eBSl/FLSE/RLSE停止定时器 Tact。 参考图 4, 说明根据本发明的另一个实施例的用于超移动宽带接入网的 分组数据会话释放过程。 如图 4所示, 该会话释放过程包括以下步骤: S402, 当释放分组数据会话时, 接入网关分别向超移动宽带接入网中的数据绑定点 和与接入网关存在反向代理移动 IP隧道的演进基站发送代理移动 IP登记撤 回消息; S404, 数据绑定点和与接入网关存在代理移动 IP隧道的演进基站收 到代理移动 IP登记撤回消息后, 分别删除其与接入网关之间的代理移动 IP 隧道,并分别向接入网关发送代理移动 IP登记拍 t回证实消息以确认其接收到 了代理移动 IP登记请求消息; S406, 数据绑定点向会话参考网络控制器发送 IP隧道通知消息, 以通知会话参考网络控制器分组数据会话已经释放。 其中, 会话参考网络控制器收到 IP隧道通知消息得知分组数据会话已 经释放后, 可以释放超移动宽带会话, 也可以不释放超移动宽带会话。 其中, 接入网关在将代理移动 IP登记撤回消息分别发送至数据绑定点 和与接入网关存在反向代理移动 IP隧道的演进基站的同时,启动特定时长的 第一定时器,以在特定时长内没有接收到代理移动 IP登记撤回证实消息的情 况下,重新向数据绑定点或与接入网关存在反向代理移动 IP隧道的演进基站 发送代理移动 IP登记撤回消息。 数据绑定点在将 IP隧道通知消息发送至会 话参考网络控制器的同时, 启动特定时长的第二定时器, 以在特定时长内没 有接收到会话参考网络控制器的响应消息的情况下, 重新向会话参考网络控 制器发送 IP隧道通知消息。 参考图 5 , 说明包含图 4所示过程的 AGW发起的存在多个 PMIP隧道 的分组会话释放导致的 UMB会话释放的过程。 如图 5所示, 该会话释放过 程包 4舌以下步骤:
S502, DAP与 AGW之间存在前反向 PMIP隧道, 并且 AT与 AGW正 在进行数据传输。
S504, eBSl与 AGW存在反向 PMIP隧道, 可用于进行反向数据传输。 S506 , AGW 给 DAP 发送 PMIP -登记撤回消息, 并设置定时器
Trrv-pmipo
S508 , 收到 PMIP -登记 ί软回消息, DAP给 AGW发送 PMIP― 1回证 实消息。 AGW停止定时器 Trrv-pmip。
S510 , AGW 给 eBSl 发送 PMIP -登记撤回消息, 并设置定时器 Trrv-pmip。
S512, 收到 PMIP -登 ¾ 软回消息, eBS 1给 AGW发送 PMIP - 回证 实消息。 AG W停止定时器 Trrv-pmip。
S514, 这个流程假设 DAP不在 AT的路由集中。 DAP发送 IP隧道( IP Tunneling, 简称 IPT ) -通知消息给 SRNC,.表示分组数据会话已经被释放, 并设置定时器 Tpdsr-ipt。
S516,收到 IPT -通知消息后, SRNC给 DAP发送 IPT -通知证实消息, DAP >|欠到证实消息后停止定时器 Tpdsr-ipt。
S518, 收到 IPT -通知消息消息后, SRNC可以决定发起 UMB会话释 放。 在 SR C释放与 AT的 UMB ^"后 , SRNC给它路由集中的所有接入 网络路由实例 ( Access Network Route Instance, 简称 ANRI )发送 IAS -会话 释放消息。 S520, SRNC给 eBS】/FLSE/RLSE发送 IAS -会话释放消息, 并设置定 时器 Tsr-ias。
S522,收到 IAS -会话释放消息后, eBSl/FLSE/RLSE给 SRNC发送 IAS -会话释放证实消息, SRNC收到证实消息后停止定时器 Tsr-ias。
S524, 如果之前 DAP为接入终端创建了空中链路记录, DAP向 AGW 发送计费请求 (中间) 消息, 并启动定时器 Tact。 该步骤可以发生在步骤 S514之后任何时候。
S526 , AGW向 DAP发送计费响应消息, 收到该消息后, DAP停止定 时器 Tact。
S528, eBSl/FLSE/RLSE 向 AGW 发送计费请求消息, 并启动定时器 Tact。 该步骤可以发生在步骤 S520之后任何时候。
S530, AGW向 eBSl/FLSE/RLSE发送计费响应消息, 收到该消息后, eBSl/FLSE/RLSE停止定时器 Tact。 综上所述, 本发明针对当前 UMB接入网技术中实现分组数据会话释放 导致的 UMB会话释放流程中没有考虑多 PMIP隧道情况的现状, 提出了针 对多 PMIP隧道时的会话释放流程, 完善了 UMB接入网技术的会话释放流 程。 以上所述仅为本发明的实施例而已, 并不用于限制本发明, 对于本领域 的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则 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权利要求 范围之内。

Claims

权 利 要 求 书 一种用于超移动宽带接入网的分组数据会话释放方法, 其特征在于, 包 括以下步骤:
S202, 当释放分组数据会话时, 接入网关向超移动宽带接入网中的 数据绑定点发送^ ^理移动 IP登记 :回消息;
S204 , 所述数据绑定点收到所述代理移动 IP登记撤回消息后, 向 所述接入网关发送代理移动 IP 登记撤回证实消息以确认其接收到了所 述代理移动 IP登 ΐ己 4软回消息;
S206, 所述数据绑定点向会话参考网络控制器发送 IP隧道通知消 息, 以通知所述会话参考网络控制器分组数据会话已经释放;
S208, 所述会话参考网络控制器收到所述 IP隧道通知消息后, 向 所述数据绑定点发送 IP隧道通知 i正实消息以确认其接收到了所述 IP隧 道通知消息, 并触发超移动宽带会话释放, 发送会话释放消息给接入终 端的路由集成员和所述数据绑定点; 以及
S210 , 所述路由集成员和所述数据绑定点收到所述会话释放消息 后, 分别向所述参考网络控制器发送会话释放证实消息以确认其接收到 了所述会话释放消息。 根据权利要求 2所述的分组数据会话释放方法, 其特征在于, 还包括以 下步骤:
S212, 所述路由集成员中的前 /反向演进基站向所述接入网关发送 计费请求消息; 以及
S214 , 所述接入网关收到所述计费请求消息后, 向所述前 /反向演 进基站返回计费响应消息。 根据权利要求 1或 2所述的分组数据会话释放方法, 其特征在于, 如果 所述数据绑定点也是所述接入终端的所述路由集成员, 则所述数据绑定 点向所述接入终端的其他路由集成员发送所述 IP隧道通知释放消息, 并 接收所述接入终端的所述其他路由集成员反馈给其的所述 IP 隧道通知 证实消息。
4. 根据权利要求 3所述的分组数据会话释放方法, 其特征在于, 所述接入 网关在将所述代理移动 IP登记撤回消息发送至所述数据绑定点的同时, 启动特定时长的第一定时器, 以在特定时长内没有接收到所述代理移动 IP登记 t回证实消息的情况下, 重新向所述数据绑定点发送所述代理移 动 IP登记撤回消息。
5. 根据权利要求 4所述的分组数据会话释放方法, 其特征在于, 所述数据 绑定点在将所述 IP 隧道通知消息发送至所述会话参考网络控制器和 /或 所述前 /反向演进基站的同时, 启动特定时长的第二定时器, 以在特定时 长内没有接收到所述会话参考网络控制器和 /或所述前 /反向演进基站的 所述 IP隧道通知证实消息的情况下, 重新向所述会话参考网络控制器和 /或所述前 /反向演进基站发送所述 IP隧道通知消息。
6. 根据权利要求 5所述的超移动宽带会话释放方法, 其特征在于, 所迷前 / 反向演进基站在将所述计费请求消息发送至所述接入网关的同时, 启动 特定时长的第三定时器, 以在特定时长内没有接收到所述计费响应消息 的情况下, 重新向所述接入网关发送所述计费请求消息。
7. 根据权利要求 1或 2所述的超移动宽带会话释放方法, 其特征在于, 还 包括以下步骤:
所述路由集成员中的与所述接入网关存在反向代理移动 IP 隧道的 非数据绑定点收到所述会话释放消息之后, 自动释放所述反向代理移动 IP隧道。
8. 一种用于超移动宽带接入网的分组数据会话释放方法, 其特征在于, 包 ^"以下步骤:
S402 , 当释放分组数据会话时, 接入网关分别向超移动宽带接入网 中的数据绑定点和与所述接入网关存在反向代理移动 IP 隧道的演进基 站发送代理移动 IP登记措回消息;
S404, 所述数据绑定点和与所述接入网关存在反向代理移动 IP隧 道的演进基站收到所述代理移动 IP登记 4软回消息后,分别删除其与所述 接入网关之间的代理移动 IP隧道,并分别向所述接入网关发送代理移动 ip登记撤回证实消息以确认其接收到了所述代理移动 IP登记请求消息; 以及 S406, 所述数据绑定点向会话参考网络控制器发送 IP隧道通知消 息, 以通知所述会话参考网络控制器分组数据会话已经释放。
9. 根据权利要求 8所述的分组数据会话释放方法, 其特征在于, 所述接入 网关在将所述代理移动 IP 登记 t回消息分别发送至所述数据绑定点和 与所述接入网关存在反向代理移动 IP隧道的演进基站的同时, 启动特定 时长的第一定时器, 以在特定时长内没有接收到所述代理移动 IP登记撤 回证实消息的情况下, 重新向所述数据绑定点或与所述接入网关存在反 向代理移动 IP隧道的演进基站发送所述^ ^理移动 IP登记拍 t回消息。
10. 根据权利要求 8或 9所述的分组数据会话释放方法, 其特征在于, 所述 数据绑定点在将所述 IP 隧道通知消息发送至所述会话参考网络控制器 的同时, 启动特定时长的第二定时器, 以在特定时长内没有接收到所述 会话参考网络控制器的响应消息的情况下, 重新向所述会话参考网络控 制器发送所述 IP隧道通知消息。
11. 根据权利要求 10所述的分组数据会话释放方法, 其特征在于, 所述会话 参考网络控制器收到所述 IP 隧道通知消息得知分组数据会话已经释放 后, 决定释放超移动宽带会话或决定不释放超移动宽带会话。
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