WO2009024003A1 - Procédé pour établir une connexion de mise à jour de carte de flux ip dans un réseau de données par paquets à haut débit - Google Patents

Procédé pour établir une connexion de mise à jour de carte de flux ip dans un réseau de données par paquets à haut débit Download PDF

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Publication number
WO2009024003A1
WO2009024003A1 PCT/CN2008/000002 CN2008000002W WO2009024003A1 WO 2009024003 A1 WO2009024003 A1 WO 2009024003A1 CN 2008000002 W CN2008000002 W CN 2008000002W WO 2009024003 A1 WO2009024003 A1 WO 2009024003A1
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WIPO (PCT)
Prior art keywords
connection
pcf
message
pdsn
information
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PCT/CN2008/000002
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English (en)
French (fr)
Inventor
Xiaowu Zhao
Dong Wei
Original Assignee
Zte Corporation
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Publication date
Priority claimed from CN2007101475173A external-priority patent/CN101321121B/zh
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to JP2010521280A priority Critical patent/JP5059193B2/ja
Priority to US12/672,588 priority patent/US8194650B2/en
Publication of WO2009024003A1 publication Critical patent/WO2009024003A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/74Admission control; Resource allocation measures in reaction to resource unavailability
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation

Definitions

  • the invention relates to a friend mobile communication, and particularly relates to a high speed packet data HRPD network IP stream mapping update connection establishment method.
  • each interface is defined as follows: Al: The A1 interface carries the circuit-switched switch (MSC) call control and mobility. The signaling function between the management function and the IWS function in the access network 2 ( AN ); The Alp: Alp interface carries the signaling between the call control and mobility management functions of the switch emulator (MSCe) and the IWS function in the AN
  • A8 The A8 interface carries the user data between the access network 2 (AN) and the packet control function 3 (PCF);
  • A10 The A10 interface carries the PCF and the PDSN.
  • Al 1 interface carries signaling information between Packet Control Function 3 (PCF) and Packet Data Service Node 4 (PDS);
  • A12 A12 interface is used to carry SC/MM functions in AN and AN- Signaling information used for access authentication between AAAs;
  • A13 The A13 interface is used to carry a signaling message between the SC/MM function in the target AN and the SC/MM function in the source AN.
  • IWS refers to the interaction function, (Interworking Solution) logic function; and SC/MM refers to the session control / mobility management logic function.
  • the IP between the access terminal 1 (AT) and the access network 2 (AN) will be reconfigured due to the following factors and the IP flow mapping will be updated: 1 increase or decrease the IP flow, 2 grant to The quality of service QoS of the IP stream changes, and the 3 IP flows are remapped on the radio link protocol RLP.
  • the IP Flow Mapping Update can lead to three situations: 1 new service connection establishment; 2 release of existing service connections; 3 no change to existing service connections ('ie no increase in service connections, Does not reduce business connections).
  • the mapping update for the IP stream results in (1) a new service connection establishment scenario.
  • the current technology has the following process. As shown in FIG. 2, the following steps are included:
  • the AT and AN configure the session for the IP flow, and the AN maps the new IP flow or reactivates the IP flow in the new service connection.
  • the AN believes that an A8/A10 connection needs to be established.
  • the AN sends an A9-Setup-A8 message to the PCF to establish an A8 connection, and starts the timer TA8-setup.
  • the A9-establishment-A8 message includes an A8 service identifier corresponding to the primary service connection A8 service identifier and the corresponding secondary A8 connection.
  • the A9-Setup-A8 message contains all the newly established A8 connections (including those already established and to be established). The A8 connection to be released is not included in the A9-Setup-A8 message.
  • the c PCF sends Al 1-registered request message to establish A10 connection.
  • the PCF starts the timer Tregreq.
  • the Al 1 - Registration Request message contains session specific extension information elements corresponding to the primary connection and additional session information of the corresponding secondary connections included in the Standard Vendor/Organization Specific Extension (NVSE) information element.
  • the All-Registration Request message sent by the PCF contains all the information of the A10 connection corresponding to the A8 connection received in step 'b.
  • the PDSN adds a new A10 connection and sends an All-Registration Reply message to the PCF. Upon receipt of this message, the PCF closes the start timer Tregreq.
  • the All-Registration Reply message contains the session-specific extension information element corresponding to the primary connection and the additional session information of the corresponding secondary connection included in the VSEs.
  • the All-Registration Reply message sent by the PDSN contains all the information about the A10 connection received in the step. The PDSN and PCF release those A10 connections that do not contain relevant information in the message.
  • PCF adds a new A8 connection and sends an A9-Connect-A8 message to the AN.
  • AN stops timing H TA8-setup.
  • A9-connection-A8 message packet corresponds to the A8 service identity of the primary connection and the additional A8 service identity of the corresponding secondary A8 connection.
  • the A9-Connection-A8 message contains information about all A8 connections received in step 'b. The PCF and AN release those A8 connections that do not contain relevant information in the message.
  • the connection establishment method can refuse or partially reject the establishment request of the new service connection according to the actual situation of the network.
  • the present invention discloses a high-speed packet data network IP stream mapping update connection establishment method, which includes the following steps:
  • the PC1 After receiving the A8 connection request that needs to be remapped by the AN, if the PC8 determines that there is an A8 connection supported by the PCF, the PC1 sends an Al1-Registration Request message to the packet data service node PDS, carrying The PCF itself supports the A10 connection information corresponding to the A8 connection;
  • the PCF establishes all A8 connections corresponding to the A10 connection in the response message, and sends an A9-Connect-A8 message carrying the established A8 connection information to the AN;
  • A The AT and the AN perform session configuration for the IP flow, and the AN maps the new IP flow or reactivates the IP flow in the new service connection;
  • the AN sends an A8-Setup-A9 message to the PCF, where the message carries all A8 connection information that needs to be remapped.
  • the PDSN determines that it supports all A10 connections established in the Al l-registration request message, it sends an Al l-registration response with a code value of 'registration acceptance' to the PCF.
  • the PDSN determines that it supports the partial A10 connection established by the application in the All-Registration Request message, it sends an Al l-registration with a code value of 'Partial Connection Establishment' to the PCF.
  • all the A10 connection information in the Al l-Registration request message refers to the session specific extension information unit corresponding to the primary connection and the additional session information of the corresponding secondary connection supported by the PCF itself included in the NVSEs;
  • All A10 connection information in the All-registration response message refers to the session-specific extension information element corresponding to the primary connection and the additional session information of the corresponding secondary connection supported by the PDSN itself contained in the NVSEs.
  • the above method is applied to the process of IP traffic mapping between the access terminal AT and the access network AN, resulting in a new service connection establishment process.
  • the PCF or the PDSN itself supports that the PCF or the PDSN has the capability of establishing an A8 or A10 connection under the condition of network resources.
  • the PCF establishes an A8 connection, which means that the PCF newly establishes an A8 connection and/or retains an existing A8 connection;
  • the PDSN establishes an A10 connection, which means that the PDSN newly establishes an A10 connection and/or retains an existing A10 connection.
  • the invention also provides a high-speed packet data network IP stream mapping update connection establishing method, comprising the following steps:
  • the PCF After receiving the A8 connection request that needs to be remapped by the AN, if the PC8 determines that there is an A8 connection supported by the PCF, the PCF sends an A10 corresponding to the A8 connection supported by the PCF itself to the packet data service node PDSN. Al l-registration request message for connection information; '
  • the PDSN judges from all A10 connections established by the Al 1 - registration request message application, and if there is no A10 connection supported by itself, sends a message carrying the 'registration rejection-insufficient resource' information to the PCF.
  • Al l-registration response message, the PDSN and the PCF release all A10 connections of the AT;
  • the PCF After receiving the registration response message, the PCF sends an A9-Release-A8 completion message to the AN, and then the PCF and the AN release all A8 connections of the AT, and the AT and the AN release the air connection of the high speed packet data network. Further, in the above step A, the PCF determines all A8 connection requests that need to be remapped. If there is no A8 connection supported by the PCF itself, the PCF is sent with the 'lifecycle, zero information. Al l-registration request message;
  • the PDSN After receiving the A11-registration request message carrying the 'lifecycle, zero information, the PDSN sends an Al l-registration response message carrying the code value to "accept registration" information to the PCF.
  • the PCF After receiving the Al l-registration response message, the PCF sends a message carrying the "PCF resource shortage" A9-release -A8 completion message to the AN.
  • the A9-release-A8 carries information that the "PDSN resources are insufficient".
  • the invention provides an HRPD network IP stream mapping update connection establishment method, and the PCF and the PDSN determine the acceptance and rejection request/partial request for the new service connection establishment request according to the actual situation of the network, that is, 1 establish a partial connection that can be supported. Or 2 to refuse the establishment of the connection, compared with the prior art, perfect and solve the specific processing when the PCF/PDSN resources are insufficient, and have clear guiding significance for such practical problems in the real network.
  • Figure 1 is a schematic diagram of the structure of the HRPD network.
  • FIG. 2 is a flow chart of the need to establish a new service connection in the IP flow mapping update in the prior art
  • FIG. 3 is a flow chart of the connection establishment of the IP flow mapping update implementation part of the present invention
  • the main idea of the present invention is that, in the case of a new service connection establishment scenario in the mapping update of the IP stream, the PCF or the PDSN may generate two operations according to the situation of the network resource, etc., that is, the PCF/PDSN accepts part of the connection establishment ( Including the enhancement and clarification of the message function in the process); (2) The PCF/PDSN rejects the connection establishment (including the enhancement and clarification of the message function in the process).
  • the PCF/PDSN accepts the IP flow mapping update process when part of the connection is established, including the following steps, as shown in Figure 3:
  • the AT and AN configure the session for the IP flow, and the AN maps the new IP flow or reactivates the IP flow in the new service connection.
  • the AN believes that an A8/A10 connection needs to be established.
  • A sends an A9-Setup-A8 message to the PCF to establish an A8 connection and starts the timer TA8-setup.
  • A9-Setup The A8 message contains the A8 service identity corresponding to the primary connection and the additional A8 service identity corresponding to the secondary A8 connection.
  • A9-Setup - The A8 message contains all A8 connections (including established and upcoming connections) that need to be remapped. That is, the A8' connection to be released is not included in the A9-Setup-A8 message.
  • the A8/A10 connection is a 1:1 correspondence.
  • the c PCF judges that there is an A8 connection supported by itself from all A8 connections in the A9-Setup-A8 message, and then sends an All-Registration Request message to the PDSN to apply for establishing an A8 connection with its own support that needs to be remapped.
  • the PCF starts the timer Tregreq.
  • the All-Registration Request message includes the session-specific extension information unit corresponding to the primary connection and the additional session information of the corresponding secondary connection that the PCF itself included in the NVSEs can support.
  • the Al l-Registration Request message sent by the PCF further includes information of the A10 secondary connection corresponding to the secondary connection supported by the PCF.
  • the PDSN judges from the A10 connection established by the Al 1 - registration request message request, if there is an A10 connection supported by itself, establishes these A10 connections, and sends an All-registration symptom message carrying the A10 connection information to the PCF. After receiving the response message, the PCF stops starting the timer Tregreq.
  • the Al l-registration response message includes session specific extension information units corresponding to the primary connection and additional session information of the corresponding secondary connections included in the NVSEs.
  • the A11- • Registration Reply message contains the information and code value "Registration Accept" of all A10 connections established in the Al l-Registration Request message. If the PDSN only supports the application established in the All-Registration Request message The part A10 is connected, and the All-registration response message includes the information of the partial A10 connection supported by the PDSN and the code value "partial connection establishment", and the PDSN and the PCF release those A10 connections not included in the message.
  • the PCF After receiving the All-Registration Reply message, the PCF establishes an A8 connection corresponding to all A10 connections held by the PDSN itself in the response message, and sends an A9-Connect-A8 carrying the A8 connection information established by the PC to the AN. Message.
  • the AN stops the timer TA8-setup.
  • the A9-connection-A8 message includes an A8 service identifier corresponding to the primary connection and an additional A8 service identifier corresponding to the secondary A8 connection.
  • the PCF and AN release the A8 connections that are not included in the message.
  • the IP stream that cannot be mapped to any A8 connection or its reserved resources is cleared between the AT and the AN.
  • the acceptance process describes the process of establishing a new service connection when the mapping of IP flows is updated.
  • the existing service connections can be revoked and released.
  • the PCF and/or PDSN can only partially satisfy the need to establish a new service connection due to the problem of its own resources.
  • the establishing the A8 or A10 connection means adding the A8 or A10 connection and/or retaining the existing A8 or A10 connection, and the established service connection is only the connection supported by the PCF or the PDSN itself, wherein the PCF Or PDSN self-support means that the PCF or PDSN has the ability to establish an A8 or A10 connection under the conditions of network resources, and the number of establishments is less than or equal to the number of applications.
  • the PCF/PDS rejects the IP flow mapping update process when the service connection is established, including the following steps, as shown in Figure 4:
  • the AT and the AN configure the session for the IP flow, and the AN maps the new IP flow or reactivates the IP flow in the new service connection.
  • the AN believes that an A8/A10 connection needs to be established.
  • the AN sends an A9-Setup-A8 message to the PCF to establish an A8 connection, and starts the timer TA8-setup.
  • the A9-Setup-A8 message includes an A8 service identifier corresponding to the primary connection and an additional A8 service identifier corresponding to the secondary A8 connection.
  • the A9-Setup-A8 message contains all A8 connections that need to be remapped (including those that have been established and will be established). which is The A8 connection to be released is not included in the A9-Setup-A8 message.
  • the A8/A10 connection is a 1:1 correspondence.
  • the PCF judges whether there is an A8 connection supported by itself in all A8 connections in the A9-Setup-A8 message, and then sends an Al l-Registration Request message to the PDSN.
  • the PCF starts the timer Tregreq.
  • the Al1-Registration Request message sent by the PCF to the PDSN includes the connection corresponding to the primary connection.
  • the session specific extension information unit and the additional session information of the corresponding secondary connection that the PCF itself contained in the NVSEs can support.
  • the Al l-registration request message sent by the PCF further includes information of the A10 secondary connection corresponding to the secondary connection supported by the PCF;
  • the PCF rejects the establishment of any service connection, it sends an Al l-Registration Request message to the PDSN containing the 'lifetime', zero to release all connections.
  • the PDSN rejects all A10 connections, or receives the Al l-Registration request message containing 'lifecycle'. When it is zero, the PDSN sends an Al l-registration response message to the PCF. After receiving the response message, the PCF stops starting the timer Tregreq. The PDSN and PCF release all A10 connections involving the AT.
  • the Al l-registration response message includes the code value "registration rejection - insufficient resources”. If the PDSN receives the Al l-registration request message containing 'lifecycle, zero, the Al l-registration response message contains the code value "registration accept”.
  • PCF receives the carrier code value as "registration accepted” or "registration refused - insufficient resources"
  • the PCF After the Al l-registration response message, the PCF sends an A9-release-A8 completion message to the AN and carries "PCF resources insufficient" (when the received Al l-registration request response message carries "registration acceptance", that is, the PCF itself decides to refuse to establish) Or "PDSN resources are insufficient” (when the received Al 1-Registration Request Reply message carries "Registration Reject - Insufficient Resources”).
  • the AN stops the timer TA8-setup. PCF and AN release all A8 connections involving AT.
  • the air connection is closed between the AT and the AN.
  • the rejection process describes the process of establishing a new service connection when the mapping of IP flows is updated.
  • the PCF and/or PDSN refused due to problems with their own resources or other factors.
  • the establishment of a new business connection is not limited to
  • the HRPD network IP flow mapping update connection establishment method provided by the present invention can reject or partially reject the establishment request of the new service connection according to the actual situation of the network.

Description

一种高速分组数据网络 IP流映照更新连接建立方法
技术领域
本发明涉友移动通讯, 具体涉及一种高速分组数据 HRPD网络 IP流映 照更新连接建立方法。
背景技术
目前,, 在高速分组数据 ( HRPD ) 网络接入网技术中, 网络结构模型如 图 1所示, 其中各个接口的定义如下: Al: A1接口承载了电路交换交换机 ( MSC )呼叫控制和移动性管理功能与接入网 2 ( AN ) 中 IWS功能之间的 信令信息; Alp: Alp接口承载了交换机模拟器 (MSCe )的呼叫控制和移 动性管理功能与 AN中 IWS功能之间的信令信息; A8: A8接口承载接入网 2 ( AN )与分组控制功能 3 ( PCF ) 间^用户数据; A9: A9接口承载 AN与 PCF间的信令信息; A10: A10接口承载 PCF与 PDSN间的用户教据;, All: Al 1接口承载分组控制功能 3 ( PCF )与分组数据业务节点 4 ( PDS ) 间的 信令信息; A12: A12接口用于承载 AN中 SC/MM功能与 AN-AAA之间用 于接入认证的信令信息; A13: A13接口用于承载目标 AN中 SC/MM功能 与源 AN 中 SC/MM 功能之间的信令信 。 其中, IWS 指交互解决方案 , ( Interworking Solution )逻辑功能; 而 SC/MM指会话控制 /移动性管理逻辑 功能。 接入终端 1 ( AT )与接入网 2 ( AN )之间的 IP ,流会因为如下因素而 发生 IP流的重新配置并产生 IP流映照的更新: ①增加或者减少 IP流, ② 授权给 IP流的服务质量 QoS发生变化,③ IP流在无线链路协议 RLP上的重 新映照等。 映照更新(IP Flow Mapping Update )会导致三种情况: ①有新的 业务连接建立; ②对已有的业务连接释放; ③对现有的业务连接不做任何变 化('即不增加业务连接, 也不减少业务连接) 。
其中, 针对 IP流的映照更新导致 (1)有新的业务连接建立情形, 当前技 术有如下的流程, 如图 2所示, 包括以下步骤:
a. AT和 AN为 IP流进行会话配置, AN映照新的 IP流或在新的业务连 接中重新激活 IP流。 b.AN认为需要建立 A8/A10连接, AN向 PCF发送 A9-建立 -A8消息建 立 A8连接, 并启动定时器 TA8-setup。 A9-建立 -A8消息包含对应主业务连 接 A8业务标识和对应辅 A8连接的附加 A8业务标识。 A9-建立 -A8消息中 包含所有需要新建立的 A8连接 (包括已经建立的和将要建立的连接 )。 即 将被释放的 A8连接不包含在 A9-建立 -A8消息中。
c PCF发送 Al 1-注册倩求消息建立 A10连接。 PCF启动定时器 Tregreq。 Al 1 -注册请求消息包含对应主连接的会话特定扩展信息单元以及包含在标 •准厂商 /組织特定扩展 (Normal Vendor/Organization Specific Extension - NVSE)信息单元中的对应辅连接的附加会话信息。 PCF发送的 All-注册请 求消息包含了所有与在步骤 'b, 中收到的 A8连接相对应的 A10连接的信 息。
PDSN增加新的 A10连接, 并向 PCF发送 All-注册应答消息, 收到 该消息后, PCF关闭启动定时器 Tregreq。 All-注册应答消息中包含对应主 连接的会话特定扩展信息单元以及包含在 VSEs中的对应辅连接的附加会 话信息。 PDSN发送的 All-注册应答消息包含了所有在步骤 中收到的 A10连接的信息。 PDSN和 PCF释放该消息中没有包含相关信息的那些 A10 连接。
e. PCF增加新的 A8连接, 并向 AN发送 A9-连接 -A8消息。 AN停止定 时 H TA8-setup。 A9-连接 -A8消息包舍对应主连接的 A8业务标识和对应辅 A8连接的附加 A8业务标识。 A9-连接 -A8消息包含在步骤 'b, 中收到的所 有 A8连接的信息。 PCF和 AN释放没有在该消息中包含相关信息的那些 A8 连接。
从上述流程可以看出, 这里只是针对 PCF和 PDSN无条件接受新增的 业务连接情形。 然而, 在现实网络中, 因为 PCF和 PDSN自身的一些原因, 或者 PDSN执行运营商某些策略等因素,不可能完全接受新增业务连接的建 立请求。 发明内容
本发明所要解决的技术问题是, 提供一种 HRPD网络 IP流映照更新连 W
■ 接建立方法,能够根据网络实际情况拒绝或部分拒绝新增业务连接的建立请 求。
为了解决上述问题, 本发明公开了一种高速分组数据网络 IP流映照更 新连接建立方法, 包括以下步驟:
( 1 )分组控制功能 PCF收到 AN发送的所有需要重新映照的 A8连接 申请后,如判断其中有该 PCF自身支持的 A8连接, 则向分组数据业务节点 PDS 发送 Al 1-注册请求消息, 携带 PCF自身支持 A8连接对应的 A10连 接信息;
( 2 )所述 PDSN获取 Al 1-注册请求消息中所有 A10连接信息后,如判 断其中有该 PDSN自身支持的 A10连接,则建立所述 A10连接并向所述 PCF 发送携带所述建立的 A10连接信息的 All-注册应答消息;
( 3 )所述 PCF收到所述应答消息后, 建立与所述应答消息中的 A10连 接对应的所有 A8连接, 并向 AN发送携带所述建立的 A8连接信息的 A9- 连接 -A8消息;
( 4 )所述 AT和 AN根据收到的 A9-连接 -A8消息释放和清除无法在任 何所述 A8连接上映照的 IP流或者其预留的资源。
上述步骤( 1 )之前还执行以下步骤:
A: 所述 AT和 AN为 IP流进行会话配置, AN映照新的 IP流或在新的 业务连接中重新激活 IP流;
B: 所述 AN向所述 PCF发送 A8-建立 -A9消息, 该消息中携带所有需 要重新映照的 A8连接信息。 进一步地, 上述步骤(2 )中, 若所述 PDSN判断其自身支持 Al l-注册 请求消息中申请建立的全部 A10连接时, 则向 PCF发送码值为 '注册接受, 的 Al l-注册应答消息。 进一步地, 上述步骤(2 )中, 若所述 PDSN判断其自身支持 All-注册 请求消息中申请建立的部分 A10连接时, 则向 PCF发送码值为' '部分连接 建立' 的 Al l-注册应答消息, 然后所述 PDSN和 PCF释放所述 All-注册应 答消息中所没有包含的 A10连接。 进一步地, 上述方法中, 所述 Al l-注册请求消息中所有 A10连接信息, 是指对应主连接的会话特定扩展信息单元以及包含在 NVSEs中的 PCF自身 支持的对应辅连接的附加会话信息;
所述 All-注册应答消息中所有 A10连接信息, 是指对应主连接的会话 特定扩展信息单元以及包含在 NVSEs中的 PDSN自身'支持的对应辅连接的 附加会话信息。
进一步地,上述方法应用于接入终端 AT与接入网 AN之间的 IP流映照 更新导致有新的业务连接建立的过程。
进一步地, 上述方法中所述 PCF或者 PDSN自身支持是指, 所述 PCF 或者 PDSN在网络资源^许的条件下具有建立 A8或 A10连接的能力.。
进一步地, 上述方法中, 所述 PCF建立 A8连接, 是指所述. PCF新建 A8连接和 /或保留存在的 A8连接;
所述 PDSN建立 A10连接, 是指所述 PDSN新建 A10连接和 /或保留存 在的 A10连接。
本发明还提供了一种高速分组数据网络 IP流映照更新连接建立方法, 包括以下步骤:
A, 分组控制功能 PCF收到 AN发送的所有需要重新映照的 A8连接申 请后, 如判断其中有该 PCF 自身支持的 A8连接, 则向分组数据业务节点 PDSN发送携带 PCF自身支持 A8连接对应的 A10连接信息的 Al l-注册请 求消息; '
B , 所述 PDSN从 Al 1 -注册请求消息申请建立的所有 A10连接中判断,· 如果不存在其自身所支持的任何 A10连接时, 则向 PCF发送携带. '注册拒 绝 -资源不足' 信息的 Al l-注册应答消息, 所述 PDSN和 PCF释放 AT的所 有 A10连接;'
C, 所述 PCF收到所述注册应答消息后, 向 AN发送 A9-释放 -A8完成 消息, 然后 PCF和 AN释放 AT的所有 A8连接, AT和 AN释放高速分组 数据网络的空中连接。 进一步地,上述步驟 A中,所述 PCF对所有需要重新映照的 A8连接申 请进行判断,如果不存在任何该 PCF自身支持的 A8连接时,则向所述 PDSN 发送携带 '生命周期, 为零信息的 Al l-注册请求消息;
,所述步骤 B中,所述 PDSN收到所述携带 '生命周期, 为零信息的 A11- 注册请求消息后, 向 PCF发送携带码值为 "接受注册" 信息的 Al l-注册应 答消息。
进一步地, 上述 PCF收到所述 Al l-注册应答消息后, 向 AN发送携带 "PCF资源不足" A9-释放 -A8完成消息。
进一步地, 上述步驟 C中, 所述 A9-释放 -A8携带 "PDSN资源不足" 的信息。
本发明提供的一种 HRPD网络 IP流映照更新 接建立方法, 通过 PCF 和 PDSN根据网络实际情况对新增业务连接建立请求进行判定接受和拒绝 请求 /部分请求, 即: ①建立可以支持的部分连接; 或者②拒绝连接的建立, 较现有技术,完善并解决了当 PCF/PDSN的资源不足情况下的具体处理, 同 时对于现实网络中的这类实际问题有着明确的指导意义。 附图概述
图 1是 HRPD网络结构示意图。
图 2是现有技术中 IP流映照更新需要建立新业务连接的流程图; 图 3是本发明 IP流映照更新实现部分连接建立的流程图; ,
图 4是本发明 IP流映照更新实现 PCF/PDSN拒绝连接建立的流程图。 本发明的较佳实施方式
本发明的主要构思是, 针对 IP流的映照更新中有新的业务连接建立的 场景, PCF或者 PDSN根据自身网络资源等情况, 会产生两种操作, 即 ( ) PCF/PDSN接受部分连接建立(包括对流程中消息功能的增强和明确); (二) PCF/PDSN拒绝连接建立(包括对流程中消息功能的增强和明确)。 下面结合附图和具体实施例,对本发明所采用的技术方案作进一步详细 说明。
PCF/PDSN接受部分连接建立时 IP流映照更新过程, 包括以下步骤, 如图 3所示:
a. AT和 AN为 IP流进行会话配置, AN映照新的 IP流或在新的业务连 接中重新激活 IP流。
b. AN认为需要建立 A8/A10连接, A 向 PCF发送 A9-建立 -A8消息建 立 A8连接, 并启动定时器 TA8-setup。 A9-建立 -A8消息包含对应主连接的 A8业务标识和对应辅 A8连接的附加 A8业务标识。 A9-建立 -A8消息中包 含所有需要重新映照的 A8连接 (包括已经建立的和将要建立的连接 ) 。 即 将被释放的 A8 '连接不包含在 A9-建立 -A8消息中。
该步骤中, A8/A10连接是 1: 1对应关系。
c PCF从 A9-建立 -A8消息中所有需要重新映照的 A8连接中判断存在其 自身支持的 A8连接, 然后向 PDSN发送 All-注册请求消息, 申请建立与其 '自身支持的需要重新映照的 A8 连接相应的 Α1Ό连接。 PCF 启动定时器 Tregreq。 其中,. All-注册请求消息包含对应主连接的会话特定扩展信息单 元以及包含在 NVSEs 中的 PCF 自身可以支持的对应辅连接的附加会话信 息。 PCF发送的 Al l-注册请求消息还包括和自身支持的辅连接对应的 A10 辅连接的信息。
, d. PDSN从 Al 1 -注册请求消息申请建立的 A10连接中判断 ,如果存在其 自身支持的 A10连接后, 建立这些 A10连接, 并向 PCF发送携带这些 A10 连接信息的 All-注册症答消息, 收到该应答消息后, PCF停止启动定时器 Tregreq。 其中, Al l-注册应答消息中包含对应主连接的会话特定扩展信息 单元以及包含在 NVSEs中的对应辅连接的附加会话信息。
如果 PDSN支持 Al l-注册请求消 中申请建立的所有 A10连接,则 A11- •注册应答消息中包含 Al l-注册请求消息中申请建立的所有 A10连接的信息 及码值 "注册接受" 。 如果 PDSN仅支持 All-注册请求消息中申请建立的 部分 A10连接, 则 All-注册应答消息中包含 PDSN所支持的部分 A10连接 的信息及码值 "部分连接建立" , 同时 PDSN和 PCF释放掉该消息中没有 包含的那些 A10连接。
e. PCF收到 All-注册应答消息后, 建立与该应答消息中 PDSN自身支 '持的所有 A10连接对应的 A8连接, 并向 AN发送携带其所建立的 A8连接 信息的 A9-连接 -A8消息。 AN停止定时器 TA8-setup。 其中, A9-连接 -A8 消息包含对应主连接的 A8业务标识和对应辅 A8连接的附加 A8业务信标 识。 PCF和 AN释放没有在该消息中包含的那些 A8连接。
f.基于 A9-连接 -A8消息, AT和 AN之间清除无法映照到任何 A8连接 的 IP流或者其预留的资源。
该接受流程描述了当 IP流的映照更新时需要建立新的业务连接的流程。 重新映照 IP流时, 存在的业务连接可以被废除并被释放。 在该接受流程中, PCF和 /或 PDSN因为自身资源的问题, 只能部分满足所需要建立新的业务 连接。
上迷方法中, 所述建立 A8或者 A10连接是指, 新增 A8或者 A10连接 和 /或保留存在的 A8或者 A10连接, 且建立的这些业务连接仅是 PCF或 PDSN自身支持的连接, 其中 PCF或 PDSN自身支持是指 PCF或者 PDSN 在网络资源允许的条件下具有建立 A8或 A10连接的能力,且建立数量小于 等于申请数量。
PCF/PDS 拒绝业务连接建立时 IP流映照更新过程, 包括以下步骤, 如图 4所示:
a.AT和 AN为 IP流进行会话配置, AN映照新的 IP流或在新的业务连 接中重新激活 IP流。
b.AN认为需要建立 A8/A10连接, AN向 PCF发送 A9-建立 -A8消息建 立 A8连接, 并启动定时器 TA8-setup。 A9-建立 -A8消息包含对应主连接的 A8业务标识和对应辅 A8连接的附加 A8业务标识。 A9-建立 -A8消息中包 含所有需要重新映照的 A8连接 (包括已经建立的和将要建立的连接 )。 即 将被释放的 A8连接不包含在 A9-建立 -A8消息中。
该步驟中, A8/A10连接是 1: 1对应关系。
c. PCF从 A9-建立 -A8消息中所有需要重新映照的 A8连接中判断是否存 在其自身支持的 A8连接, 然后向 PDSN发送 Al l-注册请求消息。 PCF启动 定时器 Tregreq。
该步骤中,,如果 PCF从 A9-建立 -A8消息中所有需要重新映照的 A8连 接中判断存在其自身支持的 A8连接, 则 PCF向 PDSN发送的 Al 1-注册请 求消息中包含连接对应主连接的会话特定扩展信息单元以及包含在 NVSEs 中的 PCF自身可以支持的对应辅连接的附加会话信息。 PCF发送的 Al l-注 册请求消息还包括和自身支持的辅连接对应的 A10辅连接的信息;
如杲 PCF拒绝任何业务连接的建立, 则向 PDSN发送 Al l-注册请求消 息包含 '生命周期 (lifetime ) , 为零以释放所有连接。
d. PDSN拒绝所有 A10连接,或者收到 Al l-注册请求消息包含 '生命周 期, 为零时, PDSN向 PCF发送 Al l-注册应答消息, 收到应答消息之后, PCF停止启动定时器 Tregreq。 PDSN和 PCF释放涉及 AT的所有 A10连接。
该步骤中, 如果是 PDSN拒绝了所有 A10连接建立时, 所述的 Al l-注 册应答消息中包含码值 "注册拒绝 -资源不足" 。 如果 PDSN收到 Al l-注 册请求消息包含 '生命周期, 为零时, 所述的 Al l-注册应答消息中包含码 值 "注册接受" 。
e. PCF 收到携带码值为 "注册接受" 或者 "注册拒绝-资源不足" 的
Al l-注册应答消息后, PCF向 AN发送 A9-释放 -A8完成消息并携带 "PCF 资源不足" (当收到的 Al l-注册请求应答消息携带 "注册接受" 即 PCF自 身决定拒绝建立)或者 "PDSN资源不足" (当收到的 Al 1-注册请求应答消 息携带 "注册拒绝 -资源不足" ) 。 AN停止定时器 TA8-setup。 PCF和 AN 释放涉及 AT的所有 A8连接。
f. 基于 A9-释放 -A8完成消息, AT和 AN之间关闭空中连接。
该拒绝流程描述了当 IP流的映照更新时需要建立新的业务连接的流程。 在该拒绝流程中, PCF和 /或 PDSN因为自身资源的问题或者其他因素, 拒 绝新业务连接建立情形。
工业实用性
本发明提供的 HRPD网络 IP流映照更新连接建立方法, 能够才艮据网络 实际情况拒绝或部分拒绝新增业务连接的建立请求。

Claims

权 利 要 求 书
1、 一种高速分组数据网络 IP.流映照更新连接建立方法, 其特征在于, 该方法包括以下步職:
( 1 )分組控制功能 PCF收到 AN发送的所有需要重新映照的 A8连接 5. 申请后,如判断其中有该 PCF自身支持的 A8连接, 则向分组数据 '业务节点
PDSN发送 Al 1-注册请求消息, 携带 PCF自身支持 A8连接对应的 A10连
' 接信息;
( 2 )所述 PDSN获取 Al 1-注册请求消息中所有 A10连接信息后,如判 断其中有该 PDSN自身支持的 A10连接,则建立所述 A10连接并向所述 PCF0 发送携带所述建立的 A10连接信息的 Al l-注册应答消息;
( 3 )所述 PCF收到所述应答消息后, 建立与所述应答消息中的 A10连 接对应的所有 A8连接, 并向 AN发送携带所述建立的 A8连接信息的 A9- '连接 -A8消息;
( 4 )所述 AT和 AN根据收到的 A9-连接 -A8消息释放和清除无法在任5 何所述 A8连接上映照的 IP流或者其预留的资源。 '
2、 如权利要求 1所述的方法, 其特征在于, 在所述步骤(1 )之前该方 法还执行以下步骤:
A: 所述 AT和 AN为 IP流进行会话配置, AN映照新的 IP流或在新的 业务连接中重新激活 IP流; '0 B: 所述 AN向所述 PCF发送 A8-建立 -A9消息, 该消息中携带所有需
. 要重新映照的 A8连接信息。
3、 如权利要求 1所述的方法, 其特征在于,
所述步骤(2 )中, 若所述 PDSN判断其自身支持 Al l-注册请求消息中 申请建立的全部 A10连接时, 则向 PCF发送码值为 '注册接受, 的 Al l-注5 册应答消息。
4、 如权利要求 1所述的方法, 其特征在于, 所述步骤(2 )中, 若所述 PDSN判断其自身支持 All-注册请求消息中 申请建立的部分 A10连接时,则向 PCF发送码值为 '部分连接建立,的 A11- 注册应答消息, 然后所述 PDSN和 PCF释放所述 Al 1-注册应答消息中所没 有包含的 A10连接。 .
5、 如权利要求 1所述的方法, 其特征在于,
所述 All-注册请求消息中所有 A10连接信息, 是指对应主连接的会话 特定扩展信息单元以及包含在 NVSEs中的 PCF自身支持的对应辅连接的附 力 p会话信息; '
所述 All-注册应答消息中所有 A10连接信息, 是指对应主连接的会话 特定扩展信息单元以及包含在 NVSEs中的 PDSN自身支持的对应辅连接的 附加会话信息。
6、 权利要求 1所述的方法, 其特征在于,
该方法应用于接入终端 AT与接入网 AN之间的 IP流映照更新导致有新 的业务连接建立的过程。
7、 如权利要求 1所述的方法, 其特征在于,
所述 PCF或者 PDSN自身支持是指 , 所述 PCF或者 PDSN在网络资源 允许的条件下具有建立 A8或 A10连接的能力。
8、 如权利要求 1或 7所述的方法, 其特征在于,
所述 PCF建立 A8连接, 是指所述 PCF新建 A8连接和 /或保留存在的 A8连接;
所述 PDSN建立 A10连接, 是指所述 PDSN新建 A10连接和 /或保留存 在的 A10连接。
9、 种高速分组数据网络 IP流映照更新连接建立方法, 其特征在于, 该方法包括以下步驟:
A, 分组控制功能 PCF收到 AN发送的所有需要重新映照的 A8连接申 请后, 如判断其中有该 PCF 自身支持的 A8连接, 则向分组数据业务节点 PDS 发送携带 PCF自身支持 A8连接对应的 A10连接信息的 All-注册请 求消息 ·,
B, 所述 PDSN从 All-注册请求消息申请建立的所有 A10连接中判断', 如果不存在其自身所支持的任何 A10连接时, 则向 PCF发送携带 '注册拒, 绝 -资源不足' 信息的 Al l-注册应答消息, 所述 PDSN和 PCF释放 AT的所 有 A10连接;
C, 所述 PCF收到所述注册应答消息后, 向 AN发送 A9-释放 -A8完成 消息, 然后 PCF和 AN释放 AT的所有 A8连接, AT和 AN释放高速分组 数据网络的空中连接。
10、 如权利要求 9所述的方法, 其特征在于,
所述步骤 A中,所述 PCF对所有需要重新映照的 A8连接申请进行判断, 如果不存在任何该 PCF自身支持的 A8连接时,则向所述 PDSN发送携带 '生 '命周期, 为零信息的 Al l-注册请求消息;
所述步骤 B中,'所述 PDSN收到所述携带 '生命周期, 为零信息的 A11- 注册请求消息后, 向 PCF发送携带码值为 "接受注册" 信息的 All-注册应
. 答消息。
11、 如权利要求 10所述的方法, 其特征在于,
'所述 PCF收到所述 Al 1-注册应答消息后, 向 AN发送携带 "PCF资源 不足,, A9-释放 -A8 ^成消息。
12、 如权利要求 9所述的方法, 其特征在于,,
所述步骤 C中, 所述 A9-释放 -A8携带 "PDSN资源不足" 的信息。
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