WO2009103229A1 - 获取锚定数据通道功能实体地址的方法及装置 - Google Patents

获取锚定数据通道功能实体地址的方法及装置 Download PDF

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Publication number
WO2009103229A1
WO2009103229A1 PCT/CN2009/070429 CN2009070429W WO2009103229A1 WO 2009103229 A1 WO2009103229 A1 WO 2009103229A1 CN 2009070429 W CN2009070429 W CN 2009070429W WO 2009103229 A1 WO2009103229 A1 WO 2009103229A1
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terminal
address
anchor
message
asn
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PCT/CN2009/070429
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English (en)
French (fr)
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谢勇
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华为技术有限公司
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Publication of WO2009103229A1 publication Critical patent/WO2009103229A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off

Definitions

  • the present invention relates to the field of wireless communications, and more particularly to a method and apparatus for obtaining a functional entity address of an anchored data channel.
  • WiMAX Worldwide Interoperability for Microwave Access
  • the wireless side of the WiMAX network is a wireless metropolitan area network access technology based on the IEEE802.16d/e standard, and uses OFDM (Orthogonal Frequency Division Multiplexing) and OFDMA (OFDM Access, OFDM Access) physics.
  • Layer technology effective against multipath fading. In the case of optimal channel fading, the transmission rate can approach 75 Mbps.
  • the logical architecture of the WiMAX network is shown in Figure 1.
  • the entire WiMAX network consists of the following three parts:
  • Client Includes SS (Subscriber Station) or MS (Mobile Station), which the user uses to access the WiMAX network.
  • ASN Access Service Network
  • the ASN includes BS (Base Station) and ASN-GW (ASN Gateway, ASN Gateway) network elements.
  • the main functions of the BS network element are: providing L2 connection between the BS and the MS, radio resource management, and the like; the main functions of the ASN-GW network element are: providing client functions for the MS authentication, authorization, and accounting functions, and providing the MS with Relay function of L3 information (such as IP address allocation), switching within ASN, etc.
  • Connection service network CSN (Connected Service Network) Defined to provide IP connection services for WiMAX terminals.
  • the CSN mainly includes logical entities including a prepaid server and an authentication, authorization, and accounting server.
  • the main functions provided are: MS IP address allocation, Internet access, AAA proxy or server, user-based authorization control, and the like.
  • the entities in WiMAX communicate through the interface from R1 to R6.
  • the relationship between each network element and interface is as shown in Figure 1:
  • the terminal MS When the terminal MS enters the network, it establishes a connection with the BS (base station) in the ASN through the R1 interface, and then passes.
  • the R6 interface establishes a connection with the ASN-GW and then connects to the CSN through the R3 interface.
  • the anchor DPF (anchored data channel function entity) is a functional entity located in the ASN-GW.
  • the BS will store the Anchor DPF address corresponding to the MS.
  • the Anchor DPF address is carried in the handover message.
  • the target BS To the target BS, the target BS establishes an Anchor DPF data channel to the terminal according to the Anchor DPF address to complete the handover process.
  • the MS when the MS moves, for example: moving from the ASN coverage area to the Another ASN coverage area, the MS establishes a connection with the Another ASN through the R1 'interface, and the Another ASN connects to the original ASN through the R4 interface, and the original ASN passes through the R3 interface.
  • the CSN communicates.
  • the inventor has found that, for some reasons, for example: the above R4 interface resources are limited, or the original ASN R3 interface resources are tight, or to reduce the data transmission delay (reducing the number of original ASNs through which data passes), the MS Anchor The ASN/DPF will be migrated.
  • the Anchor DPF of the MS is migrated from the ASN-GW of the original ASN to the ASN-GW of the Another ASN.
  • the corresponding R3 interface connected to the CSN will also be migrated to the Another ASN. R3' interface of ASN-GW.
  • the anchor DPF is migrated, the BS that is currently serving the terminal MS cannot obtain the address of the current Anchor DPF.
  • the address of the original Anchor DPF is saved. If the subsequent handover process occurs, the address will be incorrectly carried to the target BS.
  • the embodiment of the invention discloses a method for obtaining an anchored data channel function entity address, so as to solve the problem that the BS or the target ASN-GW cannot obtain the current anchor DPF address of the terminal after the anchor DPF corresponding to the terminal is migrated.
  • a method for obtaining an address of a functional entity of an anchor data channel comprising:
  • the serving base station After the migration of the anchor data channel function entity Anchor DPF corresponding to the terminal, the serving base station Receiving a notification message sent by the current Anchor DPF or the current ASN-GW of the terminal, where the notification message carries the current Anchor DPF address of the terminal.
  • a method for obtaining an address of a functional entity of an anchor data channel comprising:
  • the target base station receives a handover request message from the serving base station
  • the target base station sends a request message to the Anchor Authenticator corresponding to the terminal, where the request message is used to request the current Anchor DPF address of the terminal;
  • a method for obtaining an address of a functional entity of an anchor data channel comprising:
  • the target BS receives the handover confirmation message sent by the serving BS or the switching incoming network message initiated by the receiving terminal from the air interface;
  • the target BS If the target BS confirms that it does not have the current Anchor DPF address of the terminal, it sends a request message to the Anchor Authentictor corresponding to the terminal, where the request message is used to request the current Anchor DPF address of the terminal;
  • a method for obtaining an address of a functional entity of an anchor data channel comprising:
  • the target ASN-GW receives a Data Path registration message or a Data Path pre-registration message sent by the target base station, where the message carries the address of the service ASN-GW of the terminal;
  • the target ASN-GW sends a request message to the serving ASN-GW of the terminal according to the address of the serving ASN-GW, where the request message is used to request the current Anchor DPF address of the terminal; and receive a response message from the serving ASN-GW.
  • the response message carries the current Anchor DPF address of the terminal.
  • the embodiment of the present invention further discloses an apparatus for obtaining an address of a functional entity of an anchor data channel, and the technical solutions obtained are:
  • a device comprising:
  • Confirmation module used to confirm the anchor data channel function entity corresponding to the terminal Anchor DPF occurs migration; and notify the sending module;
  • the sending module is configured to send a notification message to the serving base station, where the notification message carries the current Anchor DPF address of the terminal.
  • a device comprising:
  • a judging module configured to determine whether the handover request message from the serving base station carries the address of the current Anchor DPF of the terminal; if not, the sending module is notified;
  • the sending module is configured to send a request message to the Anchor Authenticator corresponding to the terminal, where the request message is used to request the current Anchor DPF address of the terminal;
  • the receiving module is configured to receive a response message from the Anchor Authenticator, where the response message carries a current Anchor DPF address of the terminal.
  • a device comprising:
  • a receiving module receiving a handover confirmation message of the serving BS or a network access message initiated by the terminal from the air interface; and notifying the sending module;
  • the sending module after confirming that the target BS does not have the current Anchor DPF address of the terminal, sending a request message to the anchor Authentictor corresponding to the terminal, where the request message is used to request the current Anchor DPF address of the terminal;
  • the obtaining module is configured to receive a response message from the Anchor Authenticator, where the response message carries the current Anchor DPF address of the terminal.
  • a device comprising:
  • a receiving module configured to receive a Data Path registration message or a Data Path pre-registration message from a target base station, where the message carries a service ASN-GW address of the terminal;
  • a sending module configured to send, according to the service ASN-GW address, a request message to a service ASN-GW of the terminal, where the request message is used to request a current Anchor DPF address of the terminal;
  • the obtaining module is configured to receive a response message from the serving ASN-GW, where the response message carries the current Anchor DPF address of the terminal.
  • the method and the device according to the embodiment of the present invention can enable the BS or the Target ASN-GW to obtain the current Anchor DPF address of the terminal after the Anchor DPF corresponding to the terminal is migrated. Further, when the handover is ensured, the current Anchor to the terminal is correctly established. The DPF data channel enables the switching process to complete successfully.
  • Figure 1 is a schematic diagram of the structure of the W1MAX system
  • Figure 2 is a schematic diagram showing the structure of the WIMAX system after MSS is moved
  • FIG. 3 is a flowchart of a method for obtaining an Anchor DPF address according to an embodiment of the present invention
  • 4 is a flowchart of a method for obtaining an Anchor DPF address according to another embodiment of the present invention
  • FIG. 5 is a flowchart of a method for obtaining an Anchor DPF address according to another embodiment of the present invention
  • FIG. 6 is a flowchart of acquiring an Anchor DPF address according to another embodiment of the present invention
  • FIG. 7 is a schematic diagram of an apparatus for obtaining an Anchor DPF address according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of an apparatus for acquiring an Anchor DPF address according to another embodiment of the present invention
  • FIG. 9 is an embodiment of the present invention for obtaining an Anchor DPF address. Schematic diagram of the device. detailed description
  • the current new Anchor DPF sends a notification message to the serving base station (Serving BS) to notify the serving base station terminal of the current new Anchor DPF address.
  • the Anchor DPF of the terminal is migrated from the address where the original ASN is located to the address where the current ASN is located. For example, the resource of the R4 interface is limited, or the R3 interface of the original ASN is tight, or the data transmission delay is reduced. ASN number), Anchor DPF has migrated.
  • the Anchor DPF in the current ASN-GW or the current ASN-GW sends a migration success message to the Anchor DPF in the original ASN-GW.
  • the current Anchor DPF or the current ASN-GW sends an anchor DPF handover response (success) (Alt_DPF_HO_RSP ( success ) ) message to the original Anchor DPF to inform the original Anchor DPF that the migration was successful.
  • an anchor DPF handover response success
  • Alt_DPF_HO_RSP success
  • the Anchor DPF in the current ASN-GW sends a notification message to the serving base station to notify the serving base station terminal of the current Anchor DPF address.
  • the current Anchor DPF sends an anchor DPF-HO-Indication message to the Serving BS, and informs the Serving BS terminal of the current Anchor DPF address.
  • the message carries the current new Anchor DPF address of the terminal, and can also carry the terminal. Identification, original Anchor DPF address.
  • the serving base station returns an acknowledgement message to the current Anchor DPF.
  • the Serving BS After receiving the above indication message, the Serving BS will update it to save the Anchor DPF address of the corresponding terminal, and can reply to the current Anchor DPF with the anchor DPF switch confirmation.
  • the (Anchor-DPF-HO-Ack) message indicates that the terminal's Anchor DPF update was successful.
  • the present invention also discloses an apparatus, referring to FIG. 7, comprising: a confirmation module 701 and a sending module 702;
  • the confirmation module 701 is configured to confirm that the anchor data channel function entity Anchor DPF corresponding to the terminal is migrated; after confirming that the migration occurs, the notification sending module 702;
  • the sending module 702 is configured to send a notification message to the serving base station, where the notification message carries the current Anchor DPF address of the terminal, to notify the current Anchor DPF address of the monthly service base station terminal.
  • the confirmation module 701 confirms that the anchor data channel function entity Anchor DPF corresponding to the terminal has been migrated; the device is an ASN-GW, or is an Anchor DPF in the ASN-GW. Functional entity.
  • the current Anchor DPF of the terminal actively sends a message to the serving base station to notify the serving base station of the new Anchor DPF address, so that the serving base station acquires a new one.
  • the current Anchor DPF address when a subsequent switch occurs, ensures that the data channel to the current Anchor DPF of the terminal is correctly established, so that the subsequent handover process is successfully completed.
  • the target BS (Target BS) actively requests the current Anchor of the terminal from the Anchor Authenticator corresponding to the terminal.
  • the DPF address, the Anchor Authenticator is a functional entity located in the ASN-GW. It is the authenticator of the terminal and stores terminal-related information.
  • the main functions are as: AAA client, which assists in authenticating the terminal; saves and generates the terminal service.
  • the required security context distribute the security context to the required functional entity; save the relevant context information of the terminal in the network, and provide it to the required entity, etc.;
  • the target BS receives a handover request message sent by the serving BS.
  • the serving BS sends a HO Request request message to the target BS.
  • the request message does not carry the address information of the current Anchor DPF of the terminal, the subsequent steps are performed. Otherwise, the process is terminated.
  • the target BS sends a request message to the Anchor Authenticator corresponding to the terminal, requesting the current Anchor DPF address of the terminal. For example, the target BS sends an Anchor-DPF_Query message to the Anchor Authenticator corresponding to the terminal. The message carries the identifier of the terminal, and the Anchor Authenticator is required to feed back the current Anchor DPF address of the terminal.
  • the Anchor Authenticator corresponding to the terminal is determined when the network is connected, and may be changed due to the reason of the terminal movement or other reasons. Therefore, it may be located in the target ASN-GW or in other ASN-GWs.
  • the Anchor Authenticator sends a response message to the target BS, and notifies the current anchor DPF address of the target BS terminal.
  • the Anchor Authenticator sends a DPF Query Response (ARP) message to the target BS.
  • ARP DPF Query Response
  • the message carries the Anchor DPF address corresponding to the terminal and carries the identifier of the terminal.
  • the target BS After the target BS obtains the current Anchor DPF address of the terminal, it can establish a data channel with the Anchor DPF to complete the handover process.
  • the present invention also discloses an apparatus, referring to FIG. 8, comprising:
  • the determining module 801 is configured to determine whether the handover request message from the serving base station carries the address of the current Anchor DPF of the terminal; if not, the sending module 802 is notified;
  • the sending module 802 is configured to send a request message to the Anchor Authenticator corresponding to the terminal, where the request message is used to request the current Anchor DPF address of the terminal;
  • the receiving module 803 is configured to receive a response message from the Anchor Authenticator, where the response message carries the current Anchor DPF address of the terminal.
  • the device is a base station, or is integrated as a functional module of the base station in the base station.
  • the target BS may not query the Anchor Authenticator for the address of the Anchor DPF when receiving the handover request message of the serving BS.
  • the BS does not pre-establish data with the Anchor DPF in the handover preparation phase.
  • Link after receiving the handover confirmation message from the serving BS, if the address of the Anchor DPF corresponding to the terminal has not been obtained, then the address of the Anchor DPF is queried to the Anchor Authenticator corresponding to the terminal.
  • the serving BS of the terminal initiates a handover request to the target BS, and sends a handover request HO Request message to the target BS.
  • the target BS After receiving, the target BS returns a handover response message to the serving BS.
  • the serving BS sends a handover confirmation message to the target BS. After receiving the handover confirmation message of the serving BS, the target BS confirms that the terminal will switch to the target BS. If the target BS does not have the current Anchor DPF address of the terminal, the target BS sends a request message to the Anchor Authentictor corresponding to the terminal, requesting the current terminal.
  • the Anchor DPF address, the request process is similar to step 202, and is not described here.
  • the Anchor Authenticator sends a response message to the target BS, and notifies the current anchor DPF address of the target BS terminal.
  • the target BS may not receive the handover confirmation message of the serving BS, and after the target BS receives the handover incoming network message initiated by the terminal from the air interface, if the target BS queries itself without the current Anchor of the terminal.
  • the DPF address sends a request message to the Anchor Authentictor corresponding to the terminal, requesting the current Anchor DPF address of the terminal.
  • the target BS After the target BS obtains the current Anchor DPF address of the terminal, it can establish a data channel with the Anchor DPF to complete the handover process.
  • the present invention also discloses an apparatus, referring to FIG. 9, comprising:
  • the receiving module 901 is configured to receive a handover confirmation message of the serving BS or a network access message initiated by the terminal from the air interface; and notify the sending module 902;
  • the sending module 902 after confirming that the target BS does not have the current Anchor DPF address of the terminal, sending a request message to the Anchor Authentictor corresponding to the terminal, where the request message is used to request the current Anchor DPF address of the terminal;
  • the obtaining module 903 is configured to receive a response message from the Anchor Authenticator, where the response message carries the current Anchor DPF address of the terminal.
  • the device is a base station, or is integrated as a functional module of the base station in the base station.
  • the target BS actively sends a request message to the Anchor Authentictor corresponding to the terminal, and obtains the current Anchor DPF address of the terminal, thereby correctly establishing the data channel of the current Anchor DPF of the terminal. , the switching process is completed successfully.
  • the ASN-GW (ie, the Target ASN-GW, the target ASN-GW) where the target BS is located sends a request message to the Serving ASN-GW of the terminal, and obtains the address of the current Anchor DPF of the terminal.
  • the Serving BS sends a HO Request Handover Request message to the Target BS, where the message carries the address of the Serving ASN-GW of the terminal.
  • the Target BS sends a Data Path registration message or a Data Path pre-registration message to the ASN-GW (Target ASN-GW) in the corresponding ASN (Target ASN), where the message carries the address of the Serving ASN-GW.
  • the Target ASN-GW requests the terminal's Serving ASN-GW to request the current Anchor DPF address of the terminal.
  • the Target ASN-GW sends an Anchor DPF Query request message to the Serving ASN-GW according to the address of the Serving ASN-GW to obtain the current Anchor DPF address of the terminal.
  • the Serving ASN-GW sends a response message to the Target ASN-GW, where the corresponding message carries the current Anchor DPF address of the terminal.
  • Target ASN-GW After the Target ASN-GW obtains the current Anchor DPF address of the terminal, it can establish a data channel with the Anchor DPF to complete the handover process.
  • an embodiment of the present invention further discloses an apparatus.
  • the method includes:
  • the receiving module (901) is configured to receive a Data Path registration message or a Data Path pre-registration message from the target base station, where the message carries the Serving ASN-GW address of the terminal;
  • the sending module (902) is configured to send, according to the Serving ASN-GW address, a request message to the Serving ASN-GW of the terminal, where the request message is used to request the current Anchor DPF address of the terminal, and the obtaining module (903) is configured to receive the The response message of the Serving ASN-GW, where the response message carries the current Anchor DPF address of the terminal.
  • the device is a target ASN-GW, or a functional module as a target ASN-GW is integrated in the target ASN-GW.
  • the ASN-GW where the target BS is located sends a request message to the Serving ASN-GW of the terminal, and obtains the address of the current Anchor DPF of the terminal, so as to correctly establish the current terminal to the terminal.
  • the data channel of the Anchor DPF ensures that the handover process is completed smoothly.

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Description

获取锚定数据通道功能实体地址的方法及装置
本申请要求于 2008 年 02 月 18 日提交中国专利局、 申请号为 200810066091.3、 发明名称为 "获取锚定数据通道功能实体地址的方法及装 置"的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信领域, 尤其是一种获取锚定数据通道功能实体地 址的方法及装置。
背景技术
WiMAX ( Worldwide Interoperability for Microwave Access ,全球接入微 波互操作性 ) 是一种基于 IEEE802.16标准的无线城域网技术。 WiMAX网 络无线侧是基于 IEEE802.16d/e标准的无线城域网接入技术, 釆用 OFDM ( Orthogonal Frequency Division Multiplexing , 正交频分复用技术) 和 OFDMA ( OFDM Access , OFDM接入) 的物理层技术, 能有效的抗多径衰 落。 最佳信道衰落情况下, 传输速率可以逼近 75Mbps。
WiMAX网络逻辑架构如图 1所示, WiMAX整个网络主要由以下三部 分组成:
( 1 )客户端:包括 SS( Subscriber Station ,用户台)或 MS( Mobile Station , 移动台) , 用户使用该设备接入 WiMAX网络。
( 2 )接入业务网: ASN ( Access Service Network , 接入业务网) 定义 为 WiMAX终端提供无线接入服务的网络功能集合。 ASN包含了 BS ( Base Station, 基站 )和 ASN-GW ( ASN Gateway , ASN网关) 网元。 其中 BS网 元的主要功能为:提供 BS和 MS的 L2连接、无线资源管理等等; ASN-GW 网元的主要功能为: 为 MS认证、 授权和计费功能提供客户端功能, 为 MS 提供 L3信息的 Relay功能 (如 IP地址分配) 、 ASN内切换等。
( 3 ) 连接业务网: CSN ( Connectivity Service Network , 连接业务网) 定义为 WiMAX终端提供 IP连接服务。 CSN主要包括包括预付费服务器以 及认证、 授权和计费服务器等逻辑实体, 所提供的主要功能为: MS的 IP 地址分配、 Internet接入、 AAA proxy或者 server、 基于用户的授权控制等。
WiMAX中的各实体间通过从 R1到 R6的接口来进行通信 , 各网元及 接口关系如图 1所示: 终端 MS入网时, 通过 R1接口同 ASN中的 BS (基 站)建立连接, 然后通过 R6接口与 ASN-GW建立连接, 再通过 R3接口连 接到 CSN。 Anchor DPF (锚定数据通道功能实体)为位于 ASN-GW中的一 个功能实体, MS入网后, BS将保存 MS对应的 Anchor DPF地址, 当 MSS 切换的时候, 在切换消息中携带该 Anchor DPF地址到目标 BS , 目标 BS根 据该 Anchor DPF地址建立到终端的 Anchor DPF数据通道, 以完成切换过 程。
参考图 2, 当 MS移动时, 例如: 由 ASN覆盖区移动到 Another ASN覆盖 区, MS通过 R1 '接口同 Another ASN建立连接, Another ASN通过 R4接口与 原 ASN连接, 原 ASN再通过 R3接口与 CSN进行通讯。 发明人发现, 如果由 于某些原因, 例如: 上述的 R4接口资源受限, 或原 ASN的 R3接口资源紧张, 或为了减少数据传输时延(减少数据经过的原 ASN数量), 则 MS的 Anchor ASN/DPF将发生迁移, 此时 MS对应的 Anchor DPF由原 ASN的 ASN-GW迁 移到 Another ASN的 ASN-GW, Anchor DPF迁移后, 对应的连接 CSN的 R3 接口, 也将迁移到 Another ASN中 ASN-GW的 R3'接口。 Anchor DPF迁移后, 当前为终端 MS服务的 BS无法获得当前 Anchor DPF的地址, 继续保存着原 Anchor DPF的地址,如果后续发生切换过程,会错误携带这个地址到目标 BS, 导致无法正确建立到终端当前 Anchor DPF的数据通道, 从而使得切换无法正 常完成。 发明内容
本发明实施例公开了获取锚定数据通道功能实体地址的方法, 以解决 当终端对应的 Anchor DPF迁移后, BS或 Target ASN-GW无法获得终端当 前的 Anchor DPF地址的问题。
本发明实施例采取的技术方案分别为:
一种获取锚定数据通道功能实体地址的方法, 包括:
终端对应的锚定数据通道功能实体 Anchor DPF发生迁移后, 服务基站 接收终端当前的 Anchor DPF或当前的 ASN-GW发送的通知消息, 所述通 知消息中携带有终端当前的 Anchor DPF地址。
一种获取锚定数据通道功能实体地址的方法, 包括:
目标基站接收来自服务基站的切换请求消息;
如果所述请求消息中没有携带终端当前的 Anchor DPF的地址, 目标基 站则向终端对应的 Anchor Authenticator发送请求消息, 所述请求消息用于 请求终端当前的 Anchor DPF地址;
接收来自所述 Anchor Authenticator的响应消息, 所述响应消息中携带 有终端当前的 Anchor DPF地址。
一种获取锚定数据通道功能实体地址的方法, 包括:
目标 BS接收服务 BS发送的切换确认消息或接收终端从空口发起的切 换入网消息;
如果所述目标 BS确认自身没有终端的当前的 Anchor DPF地址, 则向 终端对应的 Anchor Authentictor发送请求消息 ,所述请求消息用于请求终端 当前的 Anchor DPF地址;
接收来自所述 Anchor Authenticator的响应消息, 所述响应消息中携带 有终端当前的 Anchor DPF地址。
一种获取锚定数据通道功能实体地址的方法, 包括:
目标 ASN-GW接收目标基站发送的 Data Path注册消息或 Data Path预 注册消息, 所述消息中携带有终端的服务 ASN-GW的地址;
目标 ASN-GW根据所述服务 ASN-GW的地址,向终端的服务 ASN-GW 发送请求消息, 所述请求消息用于请求终端当前的 Anchor DPF地址; 接收来自所述服务 ASN-GW的响应消息, 所述响应消息中携带有终端 当前的 Anchor DPF地址。
应用上述实施例技术方案, 本发明实施例还公开了获取锚定数据通道 功能实体地址的装置, 所釆取的技术方案分别为:
一种装置, 包括:
确认模块: 用于确认终端对应的锚定数据通道功能实体 Anchor DPF发 生迁移; 并通知发送模块;
发送模块: 用于向服务基站发送通知消息, 所述通知消息中携带有终 端当前的 Anchor DPF地址。 一种装置, 包括:
判断模块: 用于判断来自服务基站的切换请求消息中是否携带有终端 当前的 Anchor DPF的地址; 如果没有则通知发送模块;
发送模块: 用于向终端对应的 Anchor Authenticator发送请求消息, 所 述请求消息用于请求终端当前的 Anchor DPF地址;
接收模块: 用于接收来自所述 Anchor Authenticator的响应消息, 所述 响应消息中携带有终端当前的 Anchor DPF地址。
一种装置, 包括:
接收模块:用于接收服务 BS的切换确认消息或终端从空口发起的入网 消息; 并通知发送模块;
发送模块: 确认目标 BS没有终端当前的 Anchor DPF地址后, 向终端 对应的 Anchor Authentictor发送请求消息,所述请求消息用于请求终端当前 的 Anchor DPF地址;
获取模块: 用于接收来自所述 Anchor Authenticator的响应消息, 所述 响应消息中携带有终端当前的 Anchor DPF地址。
一种装置, 包括:
接收模块: 用于接收来自目标基站的 Data Path注册消息或 Data Path 预注册消息, 所述消息中携带有终端的服务 ASN-GW地址;
发送模块: 用于根据所述服务 ASN-GW地址, 向终端的服务 ASN-GW 发送请求消息, 所述请求消息用于请求终端当前的 Anchor DPF地址;
获取模块: 用于接收来自所述服务 ASN-GW的响应消息, 所述响应消 息中携带有终端当前的 Anchor DPF地址。
本发明实施例所述的方法及装置, 能够使得终端对应的 Anchor DPF迁 移后, BS或 Target ASN-GW可获得终端当前的 Anchor DPF地址, 进一步 的, 保证切换时, 正确地建立到终端当前 Anchor DPF的数据通道, 使切换 过程顺利完成。 附图说明
图 1为 W1MAX系统结构示意图;
图 2为 MSS移动后 WIMAX系统结构示意图;
图 3为本发明一个实施例获取 Anchor DPF地址的方法流程图; 图 4为本发明另一个实施例获取 Anchor DPF地址的方法流程图; 图 5为本发明另一个实施例获取 Anchor DPF地址的方法流程图; 图 6为本发明另一个实施例获取 Anchor DPF地址的方法流程图; 图 7为本发明一个实施例获取 Anchor DPF地址的装置示意图; 图 8为本发明另一个实施例获取 Anchor DPF地址的装置示意图; 图 9为本发明另一个实施例获取 Anchor DPF地址的装置示意图。 具体实施方式
实施例一
本实施例中, 终端对应的 Anchor DPF迁移后, 当前新的 Anchor DPF 向服务基站( Serving BS )发送通知消息,通知服务基站终端当前新的 Anchor DPF地址, 参考图 3 :
101 , Anchor DPF迁移流程;
终端对应的 Anchor DPF从原 ASN所在的地址迁移到当前 ASN所在的 地址, 例如由于上述的 R4接口资源受限, 或原 ASN的 R3接口资源紧张, 或为了减少数据传输时延(减少数据经过的 ASN数量 ) , Anchor DPF发生 了迁移。
102 , 当前 ASN-GW或当前 ASN-GW中的 Anchor DPF向原 ASN-GW 中的 Anchor DPF发送迁移成功消息;
例如: 当前 Anchor DPF或当前 ASN-GW向原 Anchor DPF发送锚定 DPF切换响应 (成功) ( Anchor_DPF_HO_RSP ( success ) ) 消息, 告知原 Anchor DPF迁移成功。
103 , 当前 ASN-GW中的 Anchor DPF向服务基站发送通知消息 , 通知 服务基站终端当前对应的 Anchor DPF地址;
例如: 当前 Anchor DPF 向 Serving BS 发送锚定 DPF 切换指示 ( Anchor— DPF—HO— Indication ) 消息, 告知 Serving BS终端当前的 Anchor DPF地址, 消息中携带终端当前新的 Anchor DPF地址, 还可以携带终端标 识, 原 Anchor DPF地址。
104 , 服务基站向当前 Anchor DPF返回确认消息。
Serving BS 收到上述指示消息后, 将更新其保存对应终端的 Anchor DPF 地址, 并且可以向当前 Anchor DPF 回复锚定 DPF 切换确认 ( Anchor— DPF— HO— Ack ) 消息, 表明终端的 Anchor DPF更新成功。
相应的, 本发明还公开了一种装置, 参考图 7 , 包括: 确认模块 701和 发送模块 702;
确认模块 701:用于确认终端对应的锚定数据通道功能实体 Anchor DPF 发生迁移; 确认发生迁移后, 通知发送模块 702;
发送模块 702: 用于向服务基站发送通知消息, 所述通知消息中携带有 终端当前的 Anchor DPF地址; 以通知月良务基站终端当前的 Anchor DPF地 址。
终端当前 Anchor DPF向原 Anchor DPF发送迁移成功消息 , 则确认模 块 701确认终端对应的锚定数据通道功能实体 Anchor DPF发生了迁移; 所述的装置为 ASN-GW, 或为 ASN-GW中的 Anchor DPF功能实体。 本发明实施例所述的方法和装置, 终端对应的 Anchor DPF迁移后, 所 述终端当前新的 Anchor DPF主动向服务基站发送消息, 通知服务基站新的 Anchor DPF地址 ,从而使服务基站获取新的当前 Anchor DPF地址,后续切 换发生时, 保证了正确地建立到终端当前 Anchor DPF的数据通道, 从而使 后续发生的切换过程顺利完成。
实施例二
本实施例中, 在终端切换过程中, 目标 BS ( Target BS )在接收到不携 带 Anchor DPF 地址信息的切换请求消息后, 主动向终端对应的 Anchor Authenticator (错定认证器)请求终端当前的 Anchor DPF 地址, Anchor Authenticator为位于 ASN-GW中的一个功能实体, 是终端的认证器, 保存 有终端相关信息, 主要功能为: 作为 AAA的 Client, 协助对终端进行认证; 保存并产生为终端服务所需的安全上下文; 分发安全上下文给需要的功能 实体; 保存终端在网络中的相关上下文信息, 并提供给需要的实体等; 该 方法参考图 4:
201 , 目标 BS接收来自服务 BS发送的切换请求消息;
本步骤中, 服务 BS向 Target BS发送 HO Request请求消息, 目标 BS 收到后, 如果发现所述请求消息中没有携带终端当前的 Anchor DPF的地址 信息, 则进行后续步骤, 否则终止本流程。
202 , 目标 BS向终端对应的 Anchor Authenticator发送请求消息, 请求 终端当前的 Anchor DPF地址; 例如: 目 标 BS 向 终端对应 的 Anchor Authenticator 发送 Anchor— DPF— Query 消息, 消息中可携带终端的标识, 要求 Anchor Authenticator反馈终端当前对应的 Anchor DPF地址。
通常, 终端对应的 Anchor Authenticator在入网的时候确定, 可能由于 终端移动的原因或其他原因可能发生变化, 因此, 可能位于目标 ASN-GW 中, 也可位于其他的 ASN-GW中。
203 , Anchor Authenticator向目标 BS发送响应消息, 通知目标 BS终 端当前对应的 Anchor DPF地址;
例如: Anchor Authenticator 向目标 BS 发送错定 DPF 查询响应 ( Anchor— DPF— Query— Response ) 消息, 消息中携带有终端当前对应的 Anchor DPF地址, 另外还可携带终端的标识。
目标 BS获得了终端当前对应的 Anchor DPF地址后,便可建立与 Anchor DPF的数据通道, 以完成切换的过程。
相应的, 本发明还公开了一种装置, 参考图 8 , 包括:
判断模块 801:用于判断来自服务基站的切换请求消息中是否携带有终 端当前的 Anchor DPF的地址; 如果没有则通知发送模块 802;
发送模块 802: 用于向终端对应的 Anchor Authenticator发送请求消息, 该请求消息用于请求终端当前的 Anchor DPF地址;
接收模块 803: 用于接收来自所述 Anchor Authenticator的响应消息, 该响应消息中携带有终端当前的 Anchor DPF地址。
所述装置为基站, 或作为基站的功能模块集成在基站中。
在另一个实施例中, 目标 BS在收到服务 BS的切换请求消息时, 可暂 时不向 Anchor Authenticator查询 Anchor DPF的地址 (这种情况下, BS在 切换准备阶段, 不与 Anchor DPF预先建立数据链路) , 而在收到来自服务 BS切换确认消息后, 如果还没有获得终端对应的 Anchor DPF的地址, 那 么这个时 ^昊才向终端对应的 Anchor Authenticator查询 Anchor DPF的地址。 参考图 5 , 具体如下:
301 , 终端的服务 BS向目标 BS发起切换请求, 向目标 BS发送切换请 求 HO Request消息。
302 , 目标 BS收到后, 向服务 BS回复切换响应消息;
303 , 服务 BS向目标 BS发送切换确认消息; 304 , 目标 BS收到服务 BS 的切换确认消息后, 确认终端将切换到本 目标 BS , 如果目标 BS查询自身没有终端当前的 Anchor DPF地址, 则向终 端对应的 Anchor Authentictor发送请求消息, 请求终端当前的 Anchor DPF 地址, 请求过程同步骤 202类似, 不在赘述。
305 , Anchor Authenticator向目标 BS发送响应消息, 通知目标 BS终 端当前对应的 Anchor DPF地址;
在另一实施例中, 步骤 302之后, 目标 BS可能没有收到服务 BS的切 换确认消息, 则目标 BS在接收到终端从空口发起的切换入网消息后, 如果 目标 B S查询自身没有终端当前的 Anchor DPF地址 ,则向终端对应的 Anchor Authentictor发送请求消息, 请求终端当前的 Anchor DPF地址。
目标 BS获得了终端当前对应的 Anchor DPF地址后,便可建立与 Anchor DPF的数据通道, 以完成切换的过程。
相应的, 本发明还公开了一种装置, 参考图 9 , 包括:
接收模块 901 : 用于接收服务 BS的切换确认消息或终端从空口发起的 入网消息; 并通知发送模块 902;
发送模块 902: 确认目标 BS没有终端当前的 Anchor DPF地址后, 向 终端对应的 Anchor Authentictor发送请求消息 ,该请求消息用于请求终端当 前的 Anchor DPF地址;
获取模块 903: 用于接收来自该 Anchor Authenticator的响应消息, 该 响应消息中携带有终端当前的 Anchor DPF地址。
所述装置为基站, 或作为基站的功能模块集成在基站中。
本发明实施例所述的方法及装置, 在切换过程中, 通过目标 BS主动向 终端对应的 Anchor Authentictor发送请求消息,获取终端当前的 Anchor DPF 地址, 从而正确地建立到终端当前 Anchor DPF的数据通道, 使切换过程顺 利完成。
实施例三
本实施例中, 目标 BS 所在的 ASN-GW (即: Target ASN-GW,目标 ASN-GW ) 向终端的 Serving ASN-GW 发送请求消息, 获取终端当前的 Anchor DPF的地址。 参考图 6:
401 , Serving BS向 Target BS发送 HO Request切换请求消息, 消息中 携带有终端的 Serving ASN-GW的地址; 402 , Target BS向其对应的 ASN ( Target ASN )中的 ASN-GW ( Target ASN-GW )发送 Data Path (数据通道) 注册消息或 Data Path预注册消息, 消息中携带 Serving ASN-GW的地址;
403 , Target ASN-GW 向终端的 Serving ASN-GW 请求终端当前的 Anchor DPF地址。
Target ASN-GW根据 Serving ASN-GW的地址向 Serving ASN-GW发送 锚定 DPF查询( Anchor— DPF— Query )请求消息, 以获取终端当前的 Anchor DPF地址;
404 , Serving ASN-GW向 Target ASN-GW回复响应消息, 所述相应消 息中携带有终端当前的 Anchor DPF地址。
403 , 404请求地址的过程, 同 202 , 203类似, 不在赘述。
Target ASN-GW获得了终端当前对应的 Anchor DPF地址后,便可建立 与 Anchor DPF的数据通道, 以完成切换的过程。
相应的, 本发明实施例还公开了一种装置, 参考图 9, 包括:
接收模块( 901 ) , 用于接收来自目标基站的 Data Path注册消息或 Data Path预注册消息, 该消息中携带有终端的 Serving ASN-GW地址;
发送模块( 902 ) ,用于根据该 Serving ASN-GW地址,向终端的 Serving ASN-GW发送请求消息 ,该请求消息用于请求终端当前的 Anchor DPF地址; 获取模块 ( 903 ) , 用于接收来自该 Serving ASN-GW的响应消息, 该 响应消息中携带有终端当前的 Anchor DPF地址。
所述装置为目标 ASN-GW,或作为目标 ASN-GW的功能模块集成在目 标 ASN-GW中。
本发明实施例所述的方法及装置, 切换过程中, 通过目标 BS 所在的 ASN-GW向终端的 Serving ASN-GW发送请求消息,获取终端当前的 Anchor DPF的地址 , 从而正确地建立到终端当前 Anchor DPF的数据通道, 保证了 切换过程顺利完成。
以上所述的具体实施例, 对本发明的目的、 方案和有益效果进行了进 一步详细说明, 所应理解的是, 以上所述仅为本发明的具体实施例而已, 并不用于限定本发明的保护范围, 凡在本发明的精神和原则之内, 所做的 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。

Claims

权 利 要 求 书
1、 一种获取锚定数据通道功能实体地址的方法, 其特征在于, 包括: 终端对应的锚定数据通道功能实体 Anchor DPF发生迁移后, 终端当前 的 Anchor DPF或当前的 ASN-GW向 务基站发送通知消息, 所述通知消 息中携带有终端当前的 Anchor DPF地址。
2、 如权利要求 1所述的方法, 其特征在于, 该方法进一步包括: 所述 月良务基站 居所述通知消息更新所述终端对应的 Anchor DPF地址, 并向所 述当前的 Anchor DPF或当前的 ASN-GW返回确认消息。
3、 一种获取锚定数据通道功能实体地址的方法, 其特征在于, 包括: 目标基站接收来自服务基站的切换请求消息;
如果所述请求消息中没有携带终端当前的 Anchor DPF的地址, 目标基 站则向终端对应的 Anchor Authenticator发送请求消息, 所述请求消息用于 请求终端当前的 Anchor DPF地址;
接收来自所述 Anchor Authenticator的响应消息, 所述响应消息中携带 有终端当前的 Anchor DPF地址。
4、 一种获取锚定数据通道功能实体地址的方法, 其特征在于, 包括: 目标 BS接收服务 BS发送的切换确认消息或接收终端从空口发起的切 换入网消息;
如果所述目标 BS确认自身没有终端的当前的 Anchor DPF地址, 则向 终端对应的 Anchor Authentictor发送请求消息 ,所述请求消息用于请求终端 当前的 Anchor DPF地址;
接收来自所述 Anchor Authenticator的响应消息, 所述响应消息中携带 有终端当前的 Anchor DPF地址。
5、 一种获取锚定数据通道功能实体地址的方法, 其特征在于, 包括: 目标 ASN-GW接收目标基站发送的 Data Path注册消息或 Data Path预 注册消息, 所述消息中携带有终端的服务 ASN-GW的地址;
目标 ASN-GW根据所述服务 ASN-GW的地址,向终端的服务 ASN-GW 发送请求消息, 所述请求消息用于请求终端当前的 Anchor DPF地址; 接收来自所述服务 ASN-GW的响应消息, 所述响应消息中携带有终端 当前的 Anchor DPF地址。
6、 如权利要求 5所述的方法, 其特征在于, 该方法之前进一步包括: 目标基站接收来自服务基站的切换请求消息, 所述切换请求消息中携 带有终端的服务 ASN-GW的地址。
7、 一种装置, 其特征在于, 包括:
确认模块( 701 ) , 用于确认终端对应的锚定数据通道功能实体 Anchor DPF发生迁移; 并通知发送模块 ( 702 ) ;
发送模块( 702 ) , 用于向服务基站发送通知消息, 所述通知消息中携 带有终端当前的 Anchor DPF地址。
8、 一种装置, 其特征在于, 包括:
判断模块(801 ) , 用于判断来自服务基站的切换请求消息中是否携带 有终端当前的 Anchor DPF的地址; 如果没有则通知发送模块 ( 802 ) ; 发送模块 ( 802 ) , 用于向终端对应的 Anchor Authenticator发送请求 消息, 所述请求消息用于请求终端当前的 Anchor DPF地址;
接收模块( 803 ) ,用于接收来自所述 Anchor Authenticator的响应消息, 所述响应消息中携带有终端当前的 Anchor DPF地址。
9、 一种装置, 其特征在于, 包括:
接收模块 (901 ) , 用于接收服务 BS的切换确认消息或终端从空口发 起的入网消息; 并通知发送模块( 902 ) ;
发送模块 ( 902 ) , 确认目标 BS没有终端当前的 Anchor DPF地址后, 向终端对应的 Anchor Authentictor发送请求消息,所述请求消息用于请求终 端当前的 Anchor DPF地址;
获取模块( 903 ) ,用于接收来自所述 Anchor Authenticator的响应消息, 所述响应消息中携带有终端当前的 Anchor DPF地址。
10、 一种装置, 其特征在于, 包括:
接收模块( 901 ) ,用于接收来自目标基站的 Data Path注册消息或 Data Path预注册消息, 所述消息中携带有终端的服务 ASN-GW地址;
发送模块 ( 902 ) , 用于根据所述服务 ASN-GW地址, 向终端的服务 ASN-GW发送请求消息,所述请求消息用于请求终端当前的 Anchor DPF地 址;
获取模块(902 ) , 用于接收来自所述服务 ASN-GW的响应消息, 所述 响应消息中携带有终端当前的 Anchor DPF地址。
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