WO2009082968A1

WO2009082968A1 - A processing method, an apparatus and a system for canceling the network handover

Info

Publication number: WO2009082968A1
Application number: PCT/CN2008/073759
Authority: WO
Inventors: Wenfu Wu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-12-26
Filing date: 2008-12-26
Publication date: 2009-07-09
Also published as: CN101472264B; CN101472264A

Abstract

A processing method, an apparatus and a system for canceling the network handover are provided. They include that: after receiving the handover cancellation message originated from the source access network element or the user equipment, the target mobility management network element notifies the target user plane network element to delete the resource assigned for UE; the target user plane network element deletes the resource assigned for UE after receiving the request. The above scheme can effectively avoid the resource waste of the target network.

Description

取消网络切换的处理方法、装置及*** Method, device and system for canceling network switching

本申请要求于 2007 年 12 月 26 日提交中国专利局、申请号为 200710160671.4、发明名称为"取消网络切换的处理方法、装置及***"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。 This application claims priority to Chinese Patent Application No. 200710160671.4, entitled "Cancellation of Network Switching Processing Methods, Devices and Systems" on December 26, 2007, the entire contents of which are incorporated by reference. In this application.

技术领域 Technical field

本发明涉及网络技术领域，尤其涉及一种取消网络切换的处理方法、装置及***。 The present invention relates to the field of network technologies, and in particular, to a method, apparatus, and system for canceling network switching.

背景技术 Background technique

在一些情况下，例如，当用户设备 ( User Equipment, UE ) 当前所在网络环境恶化时，需要将 UE从当前网络切换到另一个网络中，这其中包括从第三代合作伙伴计划（3rd Generation Partner Project, 3GPP )网络切换到非 3GPP 网络、从非 3GPP网络切换到 3GPP网络、从 3GPP网络切换到 3GPP网络以及从非 3GPP网络切换到非 3GPP网络的四种切换情况。 3GPP网络是指 3GPP 组织定义的一些网络，除了包括传统的通用分组无线业务（General Packet Radio Service , GPRS ) 网络和通用移动通信*** （ Universal Mobile Telecommunications System, UMTS)网络，还包括 3GPP长期演进（ Long Time Evolution, LTE )网络；非 3GPP网络是指非 3GPP组织定义的一些接入网络，如无线局域网（Wireless Local Area Network, WLAN ), 微波存取全球互通 ( Worldwide Interoperability for Microwave Access, Wimax ), 码分多址接入 ( Code Division Multiple Access, CDMA )等网络。 In some cases, for example, when the current network environment of the user equipment (User Equipment, UE) deteriorates, the UE needs to be switched from the current network to another network, including the 3rd Generation Partner (3rd Generation Partner). Project, 3GPP) Four handover scenarios where the network switches to a non-3GPP network, switches from a non-3GPP network to a 3GPP network, switches from a 3GPP network to a 3GPP network, and switches from a non-3GPP network to a non-3GPP network. 3GPP network refers to some networks defined by the 3GPP organization, including the traditional General Packet Radio Service (GPRS) network and Universal Mobile Telecommunications System (UMTS) network, including 3GPP Long Term Evolution (Long Time Evolution (LTE) network; non-3GPP network refers to some access networks defined by non-3GPP organizations, such as Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (Wimax), code A network such as Code Division Multiple Access (CDMA).

下面以非 3GPP网络切换到 3GPP网络为例说明目前的网络切换流程，更具体地，是以非 3GPP CDMA网络中高速分组数据 ( High Rate Packet Data, HRPD ) 网络切换到 3GPP LTE 中的演进型 UMTS接入网（Evolved UMTS Terrestrial Radio Access Network , E-UTRAN ) 网络。 The current network handover procedure is described by taking a non-3GPP network handover to a 3GPP network as an example. More specifically, the high rate packet data (HRPD) network in a non-3GPP CDMA network is switched to the evolved UMTS in 3GPP LTE. Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) network.

为了对 3GPP LTE网络有一个了解，下面首先结合图 1对 E-UTRAN网络架构进行介绍。图 1中， E-UTRAN用于实现所有与演进型网络有关的功能；移动性管理实体 ( Mobility Management Entity, MME )主要负责移动性管理与会话管理，包括用户上下文和移动状态管理、分配用户身份临时标识等；服务网关 ( Serving Gateway, Serving GW )是 UE ( User Equipment, UE )接入核心网的用户面实体，终止 E-UTRAN的接口；分组数据网络网关（ Packet Data Network-Gateway, PDN GW )是 3GPP网络和非 3GPP网络之间的用户面锚点网元，终止和外部分组数据（Packet Data Network, PDN ) 网络的接口； Serving GW和 PDN GW之间接口可釆用 GPRS隧道协议（GPRS Tunneling Protocol, GTP )或是代理移动因特网协议（ Proxy Mobile Internet Protocol , PMIP ) ；用户归属服务器（Home Subscriber Server, HSS )用于存储用户签约信息；策略和计费规则功能实体（ Policy and Charging Rule Function , PCRF )用于策略控制决定和流计费控制功能；认证、授权与计费服务器（Authentication , Authorization and Accounting Server, AAA Server )用于对 UE执行接入认证、授权和计费功能；服务 GPRS支撑节点（ Serving GPRS switching support node, SGSN )用于实现 GPRS网络中路由转发、移动性管理以及用户信息存储等功能； UMTS陆地无线接入网（ UMTS Terrestrial Radio Access Network, UTRAN ) 、 GSM/EDGE无线接入网（ GSM/EDGE Radio Access Network , GERAN ) , 用于实现所有与现有 GPRS/UMTS网络中无线有关的功能。需要说明的是，目前 LTE处于研究阶段，图 1仅是给出一种可能的 LTE网络示意图而已。 In order to have an understanding of the 3GPP LTE network, the E-UTRAN network architecture is first introduced in conjunction with FIG. In Figure 1, E-UTRAN is used to implement all functions related to the evolved network; Mobility Management Entity (MME) is mainly responsible for mobility management and session management, including user context and mobility state management, and assigning user identity. Temporary identification, etc.; Serving Gateway (Serving GW) is the UE (User Equipment, UE) access core User plane entity of the heart network, terminating the interface of the E-UTRAN; Packet Data Network-Gateway (PDN GW) is a user plane anchor network element between the 3GPP network and the non-3GPP network, terminating and external packet data (Packet Data Network, PDN) network interface; Serving GW and PDN GW interface can use GPRS Tunneling Protocol (GTP) or Proxy Mobile Internet Protocol (PMIP); user home server (Home Subscriber Server, HSS) is used to store user subscription information; Policy and Charging Rule Function (PCRF) is used for policy control decision and flow accounting control function; authentication, authorization and accounting server ( Authentication, Authorization and Accounting Server (AAA Server) is used to perform access authentication, authorization, and accounting functions for the UE. Serving GPRS switching support node (SGSN) is used to implement route forwarding and mobility management in the GPRS network. And functions such as user information storage; UMTS Terrestrial Radio Access Network (UM TS Terrestrial Radio Access Network (UTRAN), GSM/EDGE Radio Access Network (GERAN), is used to implement all wireless related functions in existing GPRS/UMTS networks. It should be noted that LTE is currently in the research stage, and FIG. 1 only shows a possible LTE network diagram.

参加图 2, 为 3GPP网络和非 3GPP网络共存架构示意图，更具体地，是图 1所示 E-UTRAN网络与 CDMA中高速分组数据（ High Rate Packet Data, HRPD )网络的共存架构示意图。其中， MME和 HRPD接入网络实体（HRPD Access Network, HRPD AN,兼具 HRPD网络的移动性管理网元功能以及接入网元功能）通过 S101接口通信，用于传递 MME和 HRPD AN之间的信令；分组数据服务节点（Packet Data Serving Node, PDSN, 有些协议中描述为 HSGW ( HRPD服务网关， HRPD Serving Gateway ) )是 HRPD网络中的一个用户面网元，用于进行 HRPD网络的用户面处理。 FIG. 2 is a schematic diagram of a coexistence architecture of a 3GPP network and a non-3GPP network, and more specifically, a coexistence architecture of the E-UTRAN network and the High Rate Packet Data (HRPD) network in the CDMA. The MME and the HRPD access network entity (HRPD Access Network, HRPD AN, and the mobility management network element function of the HRPD network and the access network element function) communicate through the S101 interface, and are used to transmit between the MME and the HRPD AN. Signaling; Packet Data Serving Node (PDSN), described in some protocols as HSGW (HRPD Serving Gateway), is a user plane network element in the HRPD network and is used to perform user planes of the HRPD network. deal with.

现有的预注册 ( re-registration ) 或者称之为优化切换 ( Optimized Handover ), 即 UE还驻留在源接入网络时预先注册到目标接入网络。本申请发明人经研究发现，在有些情况下，在预注册之后或者预注册的过程中需要取消网络切换操作，例如在目标网络环境恶化同时源网络环境良好的情况或者 UE在预注册阶段时移出目标网络的覆盖，这时可将网络切换取消，但是，目前对于取消网络切换时的处理还没有具体的技术方案。发明内容 The existing pre-registration or upgraded handover, that is, the UE also pre-registers with the target access network when camping on the source access network. The inventors of the present application have found through research that, in some cases, network switching operations need to be cancelled after pre-registration or pre-registration, for example, when the target network environment deteriorates while the source network environment is good or the UE moves out during the pre-registration phase. The coverage of the target network can be cancelled at this time. However, there is currently no specific technical solution for canceling the network handover. Summary of the invention

有鉴于此，本发明实施例的目的是提供一种取消网络切换的处理方法、装置及***，以解决取消网络切换时如何将目标网络中已经建立的资源释放掉，从而避免目标网络资源浪费的问题。 In view of this, the purpose of the embodiments of the present invention is to provide a method, a device, and a system for canceling network switching, so as to solve how to cancel the resources already established in the target network when the network switching is cancelled, thereby avoiding waste of the target network resources. problem.

为此，本发明实施例釆用如下技术方案： To this end, the following technical solutions are used in the embodiments of the present invention:

一种取消网络切换的处理方法，包括：目标用户面网元在接收到目标移动性管理网元发送的删除资源通知后，删除为用户设备分配的资源；其中，所述删除资源通知是在目标移动性管理网元接收到源接入网元或用户设备发起的切换取消通知消息后向所述目标用户面网元发送的。 A method for canceling a network switch, comprising: deleting, by the target user plane network element, a resource allocated for the user equipment after receiving the deletion resource notification sent by the target mobility management network element; wherein the deleting the resource notification is at the target The mobility management network element sends the handover cancellation notification message initiated by the source access NE or the user equipment to the target user plane network element.

一种取消网络切换的移动性管理网元，包括：切换取消获知单元，用于从源接入网元或 UE接收切换取消消息；承载删除告知单元，当所述切换取消消息获知单元接收到所述切换取消消息后，用于通知目标用户面网元删除为 UE 分配的资源。 A mobility management network element for canceling a network handover, comprising: a handover cancellation learning unit, configured to receive a handover cancellation message from a source access network element or a UE; and a bearer deletion notification unit, when the handover cancellation message learning unit receives the After the handover cancel message is used, it is used to notify the target user plane network element to delete the resource allocated for the UE.

一种取消网络切换的用户面网元，包括：承载删除获知单元，用于从目标移动性管理网元接收资源释放的通知消息；承载删除执行单元，在所述承载删除获知单元接收到所述资源释放的通知消息后，用于删除为 UE分配的目标网络资源。 A user plane network element for canceling network switching, comprising: a bearer deletion learning unit, configured to receive a resource release notification message from a target mobility management network element; a bearer deletion execution unit, where the bearer deletion learning unit receives the After the notification message of the resource release, it is used to delete the target network resource allocated for the UE.

一种取消网络切换的 UE, , 包括：切换取消判断单元，用于判断是否需要进行切换取消；切换取消告知单元，在所述切换取消判断单元确定需要进行切换取消时，用于向目标移动性管理网元发送切换取消通知消息。 A UE for canceling network handover, comprising: a handover cancellation determining unit, configured to determine whether handover cancellation is required; a handover cancellation notification unit, configured to move to a target when the handover cancellation determination unit determines that handover cancellation is required The management network element sends a handover cancellation notification message.

一种用户面锚点网元，包括：承载删除获知单元，用于从用户面网元接收删除承载请求或者代理绑定更新消息；承载删除执行单元，在所述承载删除获知单元接收到所述删除承载请求或者代理绑定更新消息后，用于删除为用户设备分配的目标网络资源。 A user plane anchor network element, including: a bearer deletion learning unit, configured to receive a delete bearer request or a proxy binding update message from a user plane network element; a bearer deletion execution unit, where the bearer deletion learning unit receives the After deleting the bearer request or proxy binding update message, it is used to delete the target network resource allocated for the user equipment.

一种取消网络切换的***，包括 UE、源接入网元、目标移动性管理网元和目标用户面网元，其特征在于，所述 UE或源接入网元，判断是否需要进行切换取消，若是，向目标移动性管理网元发送切换取消通知消息；所述目标移动性管理网元，在接收到所述切换取消通知消息后，用于通知目标用户面网元删除为 UE分配的资源；所述目标用户面网元，在接收到所述通知后，用于删除为所述 UE分配的资源。 A system for canceling network switching, including a UE, a source access network element, a target mobility management network element, and a target user plane network element, wherein the UE or the source access network element determines whether a handover cancellation is required. And sending, by the target mobility management network element, a handover cancellation notification message; the target mobility management network element, after receiving the handover cancellation notification message, used to notify the target user plane network element The resource allocated for the UE is deleted; the target user plane network element is configured to delete the resource allocated for the UE after receiving the notification.

可见，在接收到源接入网元或 UE发起的切换取消通知消息后，目标移动性管理网元通知目标用户面网元删除为 UE分配的资源，最后目标用户面网元删除为所述 UE分配的资源，从而可有效避免目标网络的资源浪费。 It can be seen that after receiving the handover cancellation notification message initiated by the source access NE or the UE, the target mobility management network element notifies the target user plane network element to delete the resource allocated for the UE, and finally the target user plane network element is deleted as the UE. The allocated resources can effectively avoid the waste of resources of the target network.

附图说明 DRAWINGS

图 1为现有技术 E-UTRAN架构示意图； 1 is a schematic diagram of a prior art E-UTRAN architecture;

图 2为现有技术 E-UTRAN与 HRPD共存架构示意图； 2 is a schematic diagram of a coexistence architecture of a prior art E-UTRAN and HRPD;

图 3为 HRPD到 E-UTRAN切换流程图； Figure 3 is a flow chart of HRPD to E-UTRAN handover;

图 4为本发明实施例一流程图 1 ; 4 is a flow chart 1 of Embodiment 1 of the present invention;

图 5为本发明实施例一取消 HRPD到 E-UTRAN切换流程图 2; FIG. 5 is a flowchart 2 of canceling HRPD to E-UTRAN handover according to Embodiment 1 of the present invention;

图 6为本发明实施例二流程图 1 ; 6 is a flowchart 1 of Embodiment 2 of the present invention;

图 7为本发明实施例二取消 HRPD到 E-UTRAN切换流程图 2; FIG. 7 is a flowchart 2 of canceling HRPD to E-UTRAN handover according to Embodiment 2 of the present invention;

图 8为本发明实施例三流程图 1 ; 8 is a flowchart 1 of Embodiment 3 of the present invention;

图 9为本发明实施例三取消 E-UTRAN到 HRPD切换流程图 2；图 10为本发明实施例四流程图 1 ; FIG. 9 is a flowchart 3 of canceling E-UTRAN to HRPD handover according to Embodiment 3 of the present invention; FIG. 10 is a flowchart 1 of Embodiment 4 of the present invention;

图 11为本发明实施例四取消 E-UTRAN到 HRPD切换流程图 2; FIG. 11 is a flowchart 2 of canceling E-UTRAN to HRPD handover according to Embodiment 4 of the present invention;

图 12为本发明实施例五流程图 1 ; Figure 12 is a flow chart 1 of Embodiment 5 of the present invention;

图 13为本发明实施例五取消 3GPP网络间切换流程图 2; 13 is a flowchart 2 for canceling handover between 3GPP networks according to Embodiment 5 of the present invention;

图 14为本发明实施例六流程图 1 ; Figure 14 is a flowchart 1 of Embodiment 6 of the present invention;

图 15为本发明实施例六取消非 3GPP网络间切换流程图 2; Figure 15 is a flowchart 2 of canceling non-3GPP inter-network handover according to Embodiment 6 of the present invention;

图 16为本发明实施例七流程图 1 ; 16 is a flowchart 1 of Embodiment 7 of the present invention;

图 17为本发明实施例七取消非 3GPP网络间切换流程图 2。 FIG. 17 is a flowchart 2 of canceling handover between non-3GPP networks according to Embodiment 7 of the present invention.

具体实施方式 detailed description

参加图 3 , 为本发明实施例从 HRPD网络到 E-UTRAN网络的优化切换流程图，包括： FIG. 3 is a flowchart of an optimized handover from an HRPD network to an E-UTRAN network according to an embodiment of the present invention, including:

步骤 301： UE在 HRPD网络接入； Step 301: The UE accesses the HRPD network.

步骤 302: UE或者 HRPD AN决定执行切换到 E-UTRAN网络；步骤 303: UE通过 HRPD网络发送附着请求（Attach Request ) 消息到 MME; Step 302: The UE or the HRPD AN decides to perform handover to the E-UTRAN network. Step 303: The UE sends an Attach Request message to the HRPD network to MME;

步骤 304: 执行鉴权程序； Step 304: Perform an authentication procedure;

步骤 305: MME发送位置更新（ Update Location ) 消息到 HSS, 获取 UE的签约数据； HSS返回 UE的签约数据，包括 UE使用的 PDN GW地址信息； Step 305: The MME sends an Update Location message to the HSS to obtain the subscription data of the UE. The HSS returns the subscription data of the UE, including the PDN GW address information used by the UE.

步骤 306: MME选择 Serving GW, 向 Serving GW发送创建缺省承载请求 ( Create Default Bearer Request ) 消息； Step 306: The MME selects the Serving GW, and sends a Create Default Bearer Request message to the Serving GW.

步骤 307：如果 Serving GW和 PDN GW之间的接口协议为 GTP , 则 Serving GW发送创建承载请求（ Create Bearer Request ) 消息到 PDN GW; PDN GW回创建载响应（ Create Bearer Response ) 消息给 Serving GW; Step 307: If the interface protocol between the Serving GW and the PDN GW is GTP, the Serving GW sends a Create Bearer Request message to the PDN GW; the PDN GW sends a Create Bearer Response message to the Serving GW;

步骤 308 : Serving GW 回创建缺省承载响应（Create Default Bearer Response ) 消息给 MME; Step 308: Serving GW returns a Create Default Bearer Response message to the MME;

步骤 309: MME发送重定位请求（ Relocation Request )消息到 E-ETRAN 中的演进型基站（ eNodeB )请求 eNodeB建立无线侧资源； eNodeB完成无线侧资源的创建后回重定位请求确认 ( Relocation Request Acknowledge ) 消息给 MME; Step 309: The MME sends a Relocation Request message to the evolved base station (eNodeB) in the E-ETRAN to request the eNodeB to establish a radio side resource; and the eNodeB completes the relocation request Acknowledge after the radio side resource is created. Message to the MME;

步骤 310: MME发送更新承载请求（Update Bearer Request ) 消息到 Serving GW更新 Serving GW的下行用户面路径到 eNodeB; Serving GW回更新载响应 ( Update Bearer Response ) 消息到 MME; Step 310: The MME sends an Update Bearer Request message to the Serving GW to update the downlink user plane path of the Serving GW to the eNodeB; the Serving GW returns an Update Bearer Response message to the MME;

步骤 311： MME发送 S 101切换命令 HO Command消息到 HRPD AN , 消息中包含 Attach Accept消息和 HO Command消息； Step 311: The MME sends an S101 handover command HO Command message to the HRPD AN, where the message includes an Attach Accept message and a HO Command message.

步骤 312: HRPD AN发送 HRPD AN L2消息到 UE , 消息中包含附着接受（ Attach Accept ) 消息和 HO Command消息； Step 312: The HRPD AN sends an HRPD AN L2 message to the UE, where the message includes an Attach Accept message and a HO Command message.

步骤 313: UE切换到 E-UTRAN网络，发送切换完成（HO Complete ) 消息到 eNodeB; Step 313: The UE switches to the E-UTRAN network, and sends a handover completion (HO Complete) message to the eNodeB.

步骤 314: eNodeB发送重定位完成（ Relocation Complete )消息给 MME, 通知 MME UE已经切换到 E-UTRAN网络； Step 314: The eNodeB sends a Relocation Complete message to the MME, to notify the MME that the UE has switched to the E-UTRAN network.

步骤 315 : MME发送更新承载请求（Update Bearer Request ) 消息给 Serving GW; 步骤 316: Serving GW通知 PDN GW切换用户面路径到 Serving GW; 如果 Serving GW和 PDN GW之间的接口协议使用 GTP协议，则 Serving GW发送 Update Bearer Request消息给 PDN GW, PDN GW切换用户面路径到 Serving GW后回 Update Bearer Response消息给 Serving GW。 Step 315: The MME sends an Update Bearer Request message to the Serving GW. Step 316: The Serving GW notifies the PDN GW to switch the user plane path to the Serving GW. If the interface protocol between the Serving GW and the PDN GW uses the GTP protocol, the Serving GW sends an Update Bearer Request message to the PDN GW, and the PDN GW switches the user plane path to After the Serving GW, the Update Bearer Response message is sent to the Serving GW.

如果 Serving GW和 PDN GW之间的接口协议使用 PMIP协议，则 Serving If the interface protocol between Serving GW and PDN GW uses the PMIP protocol, Serving

GW发送代理绑定更新（ Proxy Binding Update, Proxy BU)消息给 PDN GW, PDN GW切换用户面路径到 Serving GW后回代理绑定确认（ Proxy Binding Acknowledge, Proxy BA ) 消息给 Serving GW。 The GW sends a Proxy Binding Update (Proxy BA) message to the PDN GW, and the PDN GW switches the user plane path to the Serving GW and sends a Proxy Binding Acknowledge (Proxy BA) message to the Serving GW.

步骤 317 : Serving GW回 Update Bearer Response消息给 MME。 Step 317: The Serving GW returns an Update Bearer Response message to the MME.

图 3中虚线表示的步骤是可选的。 The steps indicated by the dashed lines in Figure 3 are optional.

上述实施例的流程中无法处理取消网络切换，这会造成目标网络为 UE 预注册分配网络资源的浪费。 In the process of the foregoing embodiment, the cancellation of the network handover cannot be handled, which causes the target network to waste the network resources for UE pre-registration.

本发明实施例提出一种取消网络切换的方法，即，在接收到切换取消消息后，目标用户面管理实体（例如， 3GPP网络 E-UTRAN中的 Serving GW, 非 3GPP网络 HRPD中的 PDSN )将为 UE分配的目标网络资源释放掉，而且，在 PDN GW已为 UE分配目标网络资源的情况下 , PDN GW也将为 UE在目标网络分配的资源释放掉。利用本发明实施例，可及时释放掉目标网络为 UE 分配的网络资源，减少资源浪费。 The embodiment of the present invention provides a method for canceling network handover, that is, after receiving the handover cancellation message, the target user plane management entity (for example, the Serving GW in the 3GPP network E-UTRAN, the PDSN in the non-3GPP network HRPD) The target network resource allocated for the UE is released, and in the case that the PDN GW has allocated the target network resource to the UE, the PDN GW will also release the resources allocated by the UE to the target network. With the embodiment of the present invention, the network resources allocated by the target network to the UE can be released in time, thereby reducing resource waste.

本发明实施例一和实施例二介绍从非 3GPP网络到 3GPP网络切换的取消方案，实施例三和实施例四介绍从 3GPP网络到非 3GPP网络切换的取消方案，实施例五介绍 3GPP网络之间切换的取消方案，实施例六介绍非 3GPP网络之间切换的取消方案。 Embodiment 1 and Embodiment 2 of the present invention describe a cancellation scheme from a non-3GPP network to a 3GPP network handover, and Embodiment 3 and Embodiment 4 introduce a cancellation scheme from a 3GPP network to a non-3GPP network handover, and Embodiment 5 introduces between 3GPP networks. The cancellation scheme of the handover, the sixth embodiment introduces the cancellation scheme of the handover between the non-3GPP networks.

首先介绍本发明方法实施例一，取消 HRPD到 E-UTRAN的网络切换。参见图 4, 为方法实施例一流程图 1 , 包括： First, the first embodiment of the method of the present invention is introduced to cancel the network switching from HRPD to E-UTRAN. Referring to FIG. 4, a flowchart 1 of the method embodiment 1 includes:

步骤 401 : UE或 HRPD AN经过网络条件测试，向 MME发送切换取消 Step 401: The UE or the HRPD AN passes the network condition test, and sends a handover cancellation to the MME.

( Handover Cancel 或者 Detach Request )通知消息，告知取消网络切换；步骤 402: MME向 Serving GW发送删除承载请求（ Delete Bearer Request ) 消息； (Handover Cancel or Detach Request) notification message, indicating to cancel the network handover; Step 402: The MME sends a Delete Bearer Request message to the Serving GW;

步骤 403： Serving GW删除为 UE在 E-UTRAN网络中分配的资源，并通过 Delete Bearer Request或者代理绑定更新（ Proxy BU )通知 PDN GW释放为 UE在目标接入网络中分配的资源； Step 403: The Serving GW deletes the resources allocated by the UE in the E-UTRAN network. Passing the Delete Bearer Request or Proxy BU to notify the PDN GW to release the resources allocated for the UE in the target access network;

步骤 404: PDN GW删除为 UE在 E-UTRAN网络中分配的资源。 Step 404: The PDN GW deletes the resources allocated by the UE in the E-UTRAN network.

参见图 5, 为方法实施例一详细流程图 2, 包括： Referring to FIG. 5, a detailed flowchart 2 of the method embodiment 1 includes:

步骤 501： UE通过 HRPD网络预切换到 E-UTRAN网络； Step 501: The UE pre-switches to the E-UTRAN network through the HRPD network.

具体地，通过执行图 3中步骤 301 ~步骤 310完成从 HRPD网络预切换到 E-UTRAN网络的操作。 Specifically, the operation of pre-switching from the HRPD network to the E-UTRAN network is performed by performing steps 301 to 310 in FIG.

步骤 502: MME发送 S101 HO Command消息到 HRPD AN, 消息中包含 Attach Accept和 HO Command消息； Step 502: The MME sends an S101 HO Command message to the HRPD AN, where the message includes an Attach Accept and a HO Command message.

步骤 503: 如果切换取消决定由 HRPD AN执行且 HRPD AN经过网络条件测试决定执行切换取消操作 (如 HRPD AN发现 UE已经移出 E-UTRAN网络的覆盖），则 HRPD AN发送切换取消（Handover Cancel )消息到 UE; 否则 HRPD AN发送 HRPD L2消息到 UE,消息中包含 Attach Accept和 HO Command 消息； Step 503: If the handover cancellation decision is performed by the HRPD AN and the HRPD AN determines to perform the handover cancellation operation through the network condition test (eg, the HRPD AN finds that the UE has moved out of the coverage of the E-UTRAN network), the HRPD AN sends a Handover Cancel message. To the UE; otherwise, the HRPD AN sends an HRPD L2 message to the UE, and the message includes an Attach Accept and HO Command message;

步骤 504: UE或是 HRPD AN通知 MME取消切换； Step 504: The UE or the HRPD AN notifies the MME to cancel the handover.

1 ) UE通知 MME取消切换： 1) The UE notifies the MME to cancel the handover:

需要说明的是，这里的切换是广义的切换，包括切换、优化切换以及预注册。 It should be noted that the handover here is a generalized handover, including handover, optimization handover, and pre-registration.

如步骤 503 , 切换取消决定是由 HRPD AN作出的， HRPD AN 发送 Handover Cancel消息给 UE通知 UE切换取消， UE再通知 MME取消切换。 In step 503, the handover cancellation decision is made by the HRPD AN, and the HRPD AN sends a Handover Cancel message to the UE to notify the UE that the handover is canceled, and the UE notifies the MME to cancel the handover.

或者，切换取消是由 UE作出的（如 UE发现自己已经移出 E-UTRAN网络的覆盖），则 UE通过 HRPD网络发送 Handover Cancel消息或 Detach Request消息到 MME通知 MME进行切换取消。 Alternatively, the handover cancellation is made by the UE (if the UE finds that it has removed the coverage of the E-UTRAN network), the UE sends a Handover Cancel message or a Detach Request message through the HRPD network to the MME to notify the MME to perform handover cancellation.

当 UE向 MME发送 Detach Request消息时， UE在 Detach Request消息中增加指示位信息，以通知 MME这个 Detach Request消息是由于" Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration cancel"导致。 When the UE sends a Detach Request message to the MME, the UE adds the indication bit information to the Detach Request message to notify the MME that the Detach Request message is caused by "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration cancel".

指示位信息具体可以为以下方式之一： The indicator bit information may specifically be one of the following ways:

① UE在 Detach Request消息中增力口 "Handover Cancel Indication" 或者 "Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; ② UE在 Detach Request消息中增加" Detach Type"信元， UE将该信元设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者 1 The UE adds a "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel Indication" in the Detach Request message; 2 The UE adds a "Detach Type" cell to the Detach Request message, and the UE sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or

"Pre-registration Cancel"; "Pre-registration Cancel";

③ UE在 Detach Request消息中增加" Cause"信元， UE将该信元设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration 3 The UE adds a "Cause" cell to the Detach Request message, and the UE sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration".

Cancel'O Cancel'O

这个指示位信元是可选的。 This indicator bit cell is optional.

如果 UE没有携带这个指示位信元，则 MME收到 Detach Request消息后如果发现 UE之前已经预注册到 MME中 , 则 MME认为收到的 Detach Request消息是导致的。 3 If the UE does not carry the indicator bit cell, if the MME receives the Detach Request message and finds that the UE has previously pre-registered with the MME, the MME considers that the received Detach Request message is caused. 3

2 ) HRPD AN向 MME发送 Handover Cancel消息，决定取消切换。 2) The HRPD AN sends a Handover Cancel message to the MME, deciding to cancel the handover.

步骤 505： MME收到上述 Handover Cancel或者 Detach Request消息后，将 UE从 MME中分离（Detach ) ； Step 505: After receiving the Handover Cancel or Detach Request message, the MME separates the UE from the MME (Detach);

如果 MME和 eNodeB之间存在 S1连接，则 MME发送 S1资源释放命令（ S1 If there is an S1 connection between the MME and the eNodeB, the MME sends an S1 resource release command (S1).

Release Command ) 消息到 eNodeB通知 eNodeB释放 SI连接资源及接入网侧承载资源； eNodeB释放 S 1连接资源及接入网侧承载资源后回 S 1 Release Complete 消息到 MME , 从而完成接入网侧的资源释放过程。 Release Command) The message to the eNodeB notifies the eNodeB to release the SI connection resource and the access network side bearer resource; the eNodeB releases the S1 connection resource and accesses the network side bearer resource, and then returns the S1 Release Complete message to the MME, thereby completing the access network side. Resource release process.

步骤 506: MME发送删除承载请求（ Delete Bearer Request )消息到 Serving GW, 请求 Serving GW删除为 UE分配的资源； Step 506: The MME sends a Delete Bearer Request message to the Serving GW, requesting the Serving GW to delete the resources allocated for the UE.

MME在 Delete Bearer Request消息中增加指示位信息以通知 Serving GW 这个 Delete Bearer Request消息是由于' 'Handover Cancel" 或' Optimized Handover Cancel"或" Pre-registration Cancel"导致。 The MME adds an indication bit information to the Delete Bearer Request message to notify the Serving GW that the Delete Bearer Request message is caused by ' 'Handover Cancel' or 'Optimized Handover Cancel' or 'Pre-registration Cancel'.

(l)MME在 Delete Bearer Request消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel (l) MME boosts the "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel" in the Delete Bearer Request message.

Indication"; Indication";

(2)MME在 Delete Bearer Request消息中增力口 "Delete Type"信元， MME将该信元设置为' 'Handover Cancel" 或者' Optimized Handover Cancel"或者 "Pre-registration Cancel"; (2) The MME adds a "Delete Type" cell to the Delete Bearer Request message, and the MME sets the cell to 'Handover Cancel' or 'Optimized Handover Cancel' or "Pre-registration Cancel";

(3)MME在 Delete Bearer Request消息中增加" Cause"信元， ΜΜΕ将该信元设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者 (3) The MME adds a "Cause" cell to the Delete Bearer Request message, and sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or

"Pre-registration Cancel"„ "Pre-registration Cancel"

需要说明的是，步骤 505和步骤 506没有先后顺序要求。 It should be noted that steps 505 and 506 are not sequentially required.

步骤 507: Serving GW删除为 UE在 E-UTRAN分配的资源，如 Serving GW 删除为 UE在 E-UTRAN分配的承载上下文。 Step 507: The Serving GW deletes the resource allocated by the UE in the E-UTRAN, for example, the Serving GW deletes the bearer context allocated by the UE in the E-UTRAN.

如果 Serving GW和 PDN GW之间的接口协议使用 PMIP协议 , 则 Serving GW收到上述消息后通知 PCRF将保存的 Serving GW地址等信息删除。 If the interface protocol between the Serving GW and the PDN GW uses the PMIP protocol, the Serving GW notifies the PCRF to delete the saved Serving GW address and other information after receiving the above message.

步骤 508： Serving GW向 PDN GW发送 Delete Bearer Request消息或 Proxy Step 508: The Serving GW sends a Delete Bearer Request message or a Proxy to the PDN GW.

BU消息 , 通知 PDN GW删除为 UE在 E-UTRAN接入网络中分配的资源； a BU message, informing the PDN GW to delete the resources allocated by the UE in the E-UTRAN access network;

[1]如果 Serving GW和 PDN GW之间的接口协议为 GTP、且 Serving GW在预注册阶段已经通知 PDN GW为 UE在 E-UTRAN接入网络中分配资源 , 则 Serving GW发送 Delete Bearer Request消息到 PDN GW。 [1] If the interface protocol between the Serving GW and the PDN GW is GTP, and the Serving GW has notified the PDN GW in the pre-registration phase that the UE allocates resources in the E-UTRAN access network, the Serving GW sends a Delete Bearer Request message to PDN GW.

其中， Serving GW在 Delete Bearer Request消息中增加指示位信息以通知 Wherein, the Serving GW adds an indication bit information to the Delete Bearer Request message to notify

PDN GW这个 Delete Bearer Request消息是由于" Handover Cancel" 或者 "Optimized Handover Cancel"或者" Pre-registration Cancel"导致的，这样 PDN GW就会将用户面路径切换到源 HRPD接入网络的用户面网元，且释放为 UE 在 E-UTRAN接入网络中分配的资源。 The PDN GW Delete Bearer Request message is caused by "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration Cancel", so the PDN GW will switch the user plane path to the user plane network element of the source HRPD access network. And release the resources allocated by the UE in the E-UTRAN access network.

a) Serving GW在 Delete Bearer Request消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"。 a) Serving GW adds "Handover Cancel Indication" or "Optimed Handover Cancel Indication" or "Pre-registration Cancel Indication" to the Delete Bearer Request message.

b) Serving GW在 Delete Bearer Request消息中增力口 "Delete Type"信元， Serving GW将该信元设置为 "Handover Cancel" 或者" Optimized Handover b) Serving GW boosts the "Delete Type" cell in the Delete Bearer Request message, and the Serving GW sets the cell to "Handover Cancel" or "Optimized Handover"

Cancel"或者" Pre-registration Cancel"„ Cancel" or "Pre-registration Cancel"

c) Serving GW在 Delete Bearer Request消息中增力口 "Cause"信元， Serving GW将该信元设置为' 'Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration Cancel"„ [2]如果 Serving GW和 PDN GW之间的接口协议使用 PMIP协议、且 c) Serving GW boosts the "Cause" cell in the Delete Bearer Request message, and the Serving GW sets the cell to ''HandoverCancel' or ' Optimized Handover Cancel' or ' Pre-registration Cancel' [2] If the interface protocol between the Serving GW and the PDN GW uses the PMIP protocol, and

Serving GW发现 PDN GW上的用户面路径已切换到 Serving GW(即 Serving GW 在预注册阶段发送 Proxy BU消息通知 PDN GW切换用户面路径到 Serving GW ) 时，则 Serving GW发送 Proxy BU消息到 PDN GW。 The Serving GW finds that the user plane path on the PDN GW has been switched to the Serving GW (ie, the Serving GW sends a Proxy BU message in the pre-registration phase to notify the PDN GW to switch the user plane path to the Serving GW), then the Serving GW sends a Proxy BU message to the PDN GW. .

其中， Serving GW在 Proxy BU消息中增加指示位信息以通知 PDN GW这个 Proxy BU消息是由于' 'Handover Cancel"或者' Optimized Handover Cancel"或 "Pre-registration Cancel"导致的且将 Proxy BU消息中的 Lifetime信元设置为 0 ,这样 PDN GW就会将用户面路径切换到源 HRPD接入网络的用户面网元，且释放为 UE在 E-UTRAN接入网络中分配的资源。 The Serving GW adds the indication bit information in the Proxy BU message to notify the PDN GW that the Proxy BU message is caused by ' 'Handover Cancel' or 'Optimized Handover Cancel' or 'Pre-registration Cancel' and will be in the Proxy BU message. The Lifetime cell is set to 0, so that the PDN GW will switch the user plane path to the user plane network element of the source HRPD access network, and release the resources allocated by the UE in the E-UTRAN access network.

A ) Serving GW在 Proxy BU消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel A) Serving GW boosts the "Handover Cancel Indication" or "Optimed Handover Cancel Indication" or "Pre-registration Cancel" in the Proxy BU message

Indication"„ Indication"

B ) Serving GW在 Proxy BU消息中增加" Update Type"信元， Proxy BU将该信元设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者 B) The Serving GW adds an "Update Type" cell to the Proxy BU message, and the Proxy BU sets the cell to "Handover Cancel" or 'Optimized Handover Cancel' or

"Pre-registration Cancel Indication"。 "Pre-registration Cancel Indication".

C ) Serving GW在 Proxy BU消息中增加" Cause"信元， Serving GW将该信元设置为' 'Handover Cancel" 或者' Optimized Handover Cancel"或者 C) Serving GW adds a " Cause" cell to the Proxy BU message, and the Serving GW sets the cell to ' 'Handover Cancel' or ' Optimized Handover Cancel' or

"Pre-registration Cancel"„ "Pre-registration Cancel"

步骤 509: PDN GW收到 Delete Bearer Request消息或 Proxy BU消息后，如果发现这些消息是由于切换取消导致的，则 PDN GW删除为 UE在 Step 509: After receiving the Delete Bearer Request message or the Proxy BU message, the PDN GW deletes the PDN GW as the UE if it is found to be caused by the handover cancellation.

E-UTRAN接入网络中分配的资源 ,如为 UE在 E-UTRAN接入网络内分配的承载上下文（ Bearer Context )或者为 UE创建的绑定緩存表项（ Binding Cache Entry ) , 保留 UE的 IP地址资源； The E-UTRAN accesses the resources allocated in the network, such as the bearer Context allocated by the UE in the E-UTRAN access network or the Binding Cache Entry created for the UE, and retains the IP of the UE. Address resource

如果 PDN GW在预注册的程序中已将用户面路径切换到 Serving GW, 则 If the PDN GW has switched the user plane path to the Serving GW in the pre-registered procedure, then

PDN GW收到上述消息后，将用户面路径切回到源 HRPD网络中的 PDSN网元，从 PCRF获取 UE在源 HRPD网络中的策略和计费控制（PCC, Policy and Charging Control )规则 , 恢复 PDN GW和源 HRPD网络之间的资源。 After receiving the above message, the PDN GW cuts the user plane path back to the PDSN network element in the source HRPD network, and obtains the policy and charging control (PCC, Policy and Charging Control) rules of the UE in the source HRPD network from the PCRF. Resources between the PDN GW and the source HRPD network.

步骤 510: PDN GW回删除承载响应（ Delete Bearer Response ) 消息或者 Proxy BA到 Serving GW; Step 510: The PDN GW returns a Delete Bearer Response message or Proxy BA to Serving GW;

步骤 511： Serving GW回 Delete Bearer Response消息到 MME; Step 511: Serving GW returns a Delete Bearer Response message to the MME;

步骤 512: MME回切换取消确认（ Handover Cancel Acknowledge )消息或者去附着接受（ Detach Accept ) 消息到 UE, 或者 MME回 Handover Cancel Acknowledge消息到 HRPD AN。 Step 512: The MME returns a Handover Cancel Acknowledge message or a Detach Accept message to the UE, or the MME returns a Handover Cancel Acknowledge message to the HRPD AN.

图 5中虚线表示的步骤是可选的，对于图 7、 9、 11、 13和 15类似。 The steps indicated by the dashed lines in Figure 5 are optional and similar to Figures 7, 9, 11, 13 and 15.

实施例一这种机制也能应用到各种非 3GPP到 3GPP网络的切换取消处理，如 Wimax到 UTRAN网络的切换取消处理，这时， HRPD接入网络将被替换为 Wimax接入网络 , MME网元将替换为 UTRAN网络中的 SGSN网元，而 E-UTRAN中的 eNodeB网元将替换为 UTRAN网络中的 RNC网元，其它的处理流程和机制同上面实施例中的处理，这里不再详细描述。 Embodiment 1 This mechanism can also be applied to handover cancellation processing of various non-3GPP to 3GPP networks, such as handover cancellation processing of Wimax to UTRAN network. At this time, the HRPD access network will be replaced with Wimax access network, MME network. The element will be replaced by the SGSN network element in the UTRAN network, and the eNodeB network element in the E-UTRAN will be replaced with the RNC network element in the UTRAN network. Other processing procedures and mechanisms are the same as those in the above embodiment, and are not detailed here. description.

下面介绍方法实施例二，也是描述从 HRPD到 E-UTRAN切换取消的方案，在上述实施例一中，是由 Serving GW通知 PDN GW删除为 UE在 E-UTRAN分配的资源，而在本实施例中，是釆用源移动性管理网元（例如 HRPD AN )通过源用户面网元（如 PDSN )通知 PDN GW删除为 UE在目标 E-UTRAN分配的资源。 The following describes the second embodiment of the method, which is also a description of the handover from the HRPD to the E-UTRAN. In the first embodiment, the Serving GW notifies the PDN GW to delete the resources allocated by the UE in the E-UTRAN, but in this embodiment. In the meantime, the source mobility management network element (for example, HRPD AN) informs the PDN GW to delete the resource allocated for the UE in the target E-UTRAN through the source user plane network element (such as the PDSN).

参见图 6, 为方法实施例二流程图 1 , 包括： Referring to FIG. 6, a flow chart 1 of the second embodiment of the method includes:

步骤 601 : UE或者 HRPD AN决定取消 UE的切换或者预注册，发送 Handover Cancel消息或者 Detach Request消息到 MME; Step 601: The UE or the HRPD AN decides to cancel the handover or pre-registration of the UE, and sends a Handover Cancel message or a Detach Request message to the MME.

步骤 602: MME发送 Delete Bearer Request消息到 Serving GW, Serving GW 释放资源； Step 602: The MME sends a Delete Bearer Request message to the Serving GW, and the Serving GW releases the resource.

步骤 603： HRPD AN发送 Al 1 Registration Request消息到 PDSN; Step 603: The HRPD AN sends an Al 1 Registration Request message to the PDSN.

步骤 604： PDSN发送 Proxy BU消息到 PDN GW; Step 604: The PDSN sends a Proxy BU message to the PDN GW.

步骤 605: PDN GW将用户面路径切回到源 HRPD网络中的 PDSN网元，同时 PDN GW将目标网络 E-UTRAN中的资源释放。 Step 605: The PDN GW cuts the user plane path back to the PDSN network element in the source HRPD network, and the PDN GW releases the resources in the target network E-UTRAN.

参见图 7, 为方法实施例二详细流程图 2, 其中步骤 701 ~步骤 706与实施例一类似，包括： Referring to FIG. 7, a detailed flowchart 2 is shown in the second embodiment of the method. Steps 701 to 706 are similar to the first embodiment, and include:

步骤 701至步骤 705同步骤 501至步骤 505的处理。 Steps 701 to 705 are the same as the processing of steps 501 to 505.

步骤 706: MME发送 Delete Bearer Request消息到 Serving GW请求 Serving GW删除为 UE分配的资源， Serving GW收到消息后释放资源，然后回 Delete Bearer Response消息到 MME; Step 706: The MME sends a Delete Bearer Request message to the Serving GW to request Serving. The GW deletes the resource allocated to the UE, and the Serving GW releases the resource after receiving the message, and then returns a Delete Bearer Response message to the MME;

其中， MME在 Delete Bearer Request消息中增力 P指示位信息以通知 Serving GW这个 Delete Bearer Request消息是由于' 'Handover Cancel" 或 "Optimized Handover Cancel"或" Pre-registration Cancel"导致。 The MME adds P to the bit information in the Delete Bearer Request message to notify the Serving GW that the Delete Bearer Request message is caused by 'Handover Cancel' or "Optimized Handover Cancel" or "Pre-registration Cancel".

注： Serving GW收到 Delete Bearer Request消息后如果发现 Delete Bearer Request消息是由于' 'Handover Cancel" 或' Optimized Handover Cancel"或 "Pre-registration Cancel"导致的，则 Serving GW不通知 PDN GW释放资源。 Note: If the Delete Bearer Request message is found by the Serving GW after the Delete Bearer Request message is caused by ' 'Handover Cancel' or ' Optimized Handover Cancel' or 'Pre-registration Cancel', the Serving GW does not notify the PDN GW to release the resource.

指示位信息的具体处理同实施例一中的处理。 The specific processing of the indication bit information is the same as that in the first embodiment.

需要说明的是，步骤 705和步骤 706没有先后顺序要求。 It should be noted that step 705 and step 706 are not sequentially required.

步骤 707：如果 MME收到的 Handover Cancel/Detach Request消息由 UE发出的，则 MME发送 Handover Cancel Acknowledge/Detach Accept消息到 UE。 Step 707: If the Handover Cancel/Detach Request message received by the MME is sent by the UE, the MME sends a Handover Cancel Acknowledge/Detach Accept message to the UE.

步骤 708: 如果 MME收到的 Handover Cancel消息由 HRPD AN发出的，则 MME发送 Handover Cancel Acknowledge消息到 HRPD AN；如果 MME收到的 Handover Cancel消息由 UE发出的，则 MME发送 Handover Cancel消息到 HRPD AN; Step 708: If the Handover Cancel message received by the MME is sent by the HRPD AN, the MME sends a Handover Cancel Acknowledge message to the HRPD AN. If the Handover Cancel message received by the MME is sent by the UE, the MME sends a Handover Cancel message to the HRPD AN. ;

步骤 709: HRPD AN收到上述 Handover Cancel Acknowledge或者 Handover Cancel消息后，如果发现上述消息是 HRPD到 E-UTRAN切换取消或优化切换取消或预注册取消导致的 , 则 HRPD AN发送 Al 1注册请求（ Al 1 Registration Request )消息或者 Al 1路径修改请求（ Al 1 Path Update Request )消息到 PDSN 请求 PDSN通知 PDN GW将用户面路径切换到 PDSN,同时通知 PDN GW删除为 UE在目标接入网络中分配的资源。 Step 709: After the HRPD AN receives the Handover Cancel Acknowledge or Handover Cancel message, if the message is found to be HRPD to E-UTRAN handover cancellation or optimized handover cancellation or pre-registration cancellation, the HRPD AN sends an Al 1 registration request (Al 1 Registration Request) message or Al 1 Path Update Request message to the PDSN requesting the PDSN to notify the PDN GW to switch the user plane path to the PDSN, and notify the PDN GW to delete the resources allocated for the UE in the target access network. .

HRPD AN在 Al 1 Registration Request消息中增加指示位信息以通知 PDSN 这个 Al 1 Registration Request消息是由于' 'Handover Cancel"或者' Optimized Handover Cancel" 或者" Pre-registration Cancel"导致的，且将 Lifetime信元设置为非 0的一个数值。 The HRPD AN adds the indication bit information to the PDSN in the Al 1 Registration Request message to notify the PDSN that the Al 1 Registration Request message is caused by ' 'Handover Cancel' or 'Optimized Handover Cancel' or 'Pre-registration Cancel', and the Lifetime cell is Set to a value other than 0.

a) HRPD AN在 Al 1 Registration Request消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; a) HRPD AN boosts the port "Handover Cancel Indication" or 'Optimized Handover Cancel Indication' or "Pre-registration" in the Al 1 Registration Request message Cancel Indication";

b) HRPD AN在 Al 1 Registration Request消息中增力口 "Registration Type" 信元， HRPD AN将该信元设置为 "Handover Cancel" 或' Optimized Handover Cancel"或" Pre-registration Cancel"; b) HRPD AN boosts the "Registration Type" cell in the Al 1 Registration Request message, and HRPD AN sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration Cancel";

c) HRPD AN在 Al 1 Registration Request消息中增加" Cause"信元， HRPD c) HRPD AN adds "Cause" cell to Al 1 Registration Request message, HRPD

AN将该信元设置为 "Handover Cancel" 或者" Optimized Handover Cancel"或者 "Pre-registration Cancel"„ AN sets the cell to "Handover Cancel" or "Optimed Handover Cancel" or "Pre-registration Cancel"

步骤 710： PDSN收到上述 Al 1 Registration Request消息或者 Al 1 Path Update Request消息后，确定已将用户面切换到 E-UTRAN时，发送 Proxy BU消息到 PDN GW, PDN GW释放目标网络资源，恢复源网络资源； Step 710: After receiving the foregoing Al 1 Registration Request message or the Al 1 Path Update Request message, the PDSN determines that the user plane has been switched to the E-UTRAN, and sends a Proxy BU message to the PDN GW, and the PDN GW releases the target network resource, and the recovery source Internet resources;

PDSN在 Proxy BU消息中增加指示位信息以通知 PDN GW这个 Proxy BU消息是由于' 'Handover Cancel"或者' Optimized Handover Cancel" 或者 The PDSN adds indicator bit information to the Proxy BU message to inform the PDN GW that the Proxy BU message is due to ' 'Handover Cancel' or ' Optimized Handover Cancel' or

"Pre-registration Cancel"导致的，且将 Lifetime信元设置为非 0的一个数值，这样， PDN GW就会将用户面路径切换到源用户面网元（PDSN ) , 且释放为 UE 在 E-UTRAN接入网络中分配的资源。 Caused by "Pre-registration Cancel", and the Lifetime cell is set to a value other than 0, so that the PDN GW will switch the user plane path to the source user plane network element (PDSN) and release it as UE in E- The UTRAN accesses resources allocated in the network.

a) PDSN在 Proxy BU消息中增力口 "Handover Cancel Indication" 或者 a) PDSN boosts the port "Handover Cancel Indication" in the Proxy BU message or

"Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; b) PDSN在 Proxy BU消息中增加" Registration Type"信元， PDSN将该信元设置为 "Handover Cancel" 或' Optimized Handover Cancel"或" Pre-registration"Optimized Handover Cancel Indication" or "Pre-registration Cancel Indication"; b) The PDSN adds a "Registration Type" cell to the Proxy BU message, and the PDSN sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or "" Pre-registration

Cancel"; Cancel";

c) PDSN在 Proxy BU消息中增加" Cause"信元， PDSN将该信元设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration Cancel'O c) The PDSN adds a "Cause" cell to the Proxy BU message, and the PDSN sets the cell to "Handover Cancel" or 'Optimized Handover Cancel' or "Pre-registration Cancel'O

PDN GW操作具体为， PDN GW收到上述消息后，将用户面路径切回到 The PDN GW operation is specifically: after receiving the above message, the PDN GW cuts the user plane path back.

PDSN网元，同时 PDN GW将 E-UTRAN侧的资源释放掉 , 如 PDN GW为 UE在 E-UTRAN接入网络内分配的承载上下文（ Bearer Context )或者为 UE创建的绑定緩存表项 ( Binding Cache Entry ) , 保留 UE的 IP地址资源；并且， PDN GW 收到上述消息后，联系 PCRF获取 UE在源 HRPD网络中的 PCC规则，恢复 PDN GW和源 HRPD网络之间的资源。 The PDSN network element, and the PDN GW releases the resources on the E-UTRAN side, such as the bearer Context allocated by the UE in the E-UTRAN access network or the binding cache entry created for the UE (Binding) Cache Entry), retaining the IP address resource of the UE; and after receiving the above message, the PDN GW contacts the PCRF to obtain the PCC rule of the UE in the source HRPD network, and restores the PDN. Resources between the GW and the source HRPD network.

步骤 711： PDSN回 Al 1 Registration Reply消息或者 Al 1 Path Update Reply 消息到 HRPD AN; Step 711: The PDSN returns an Al 1 Registration Reply message or an Al 1 Path Update Reply message to the HRPD AN.

步骤 712: 如果 HRPD AN在第步骤 708步中收到 MME发送的 Handover Cancel消息，则 HRPD AN回 Handover Cancel Acknowledge消息到 MME。 Step 712: If the HRPD AN receives the Handover Cancel message sent by the MME in step 708, the HRPD AN returns a Handover Cancel Acknowledge message to the MME.

实施例二这种机制也能应用到各种非 3GPP到 3GPP网络的切换取消处理，如 Wimax到 UTRAN网络的切换取消处理。这时 HRPD接入网络将被替换为 Wimax接入网络 , MME网元将替换为 UTRAN网络中的 SGSN网元，而 E-UTRAN中的 eNodeB网元将替换为 UTRAN网络中的 RNC网元 , 其它的处理流程和机制同上面实施例中的处理，这里不再详细描述。 Embodiment 2 This mechanism can also be applied to handover cancellation processing of various non-3GPP to 3GPP networks, such as handover cancellation processing of Wimax to UTRAN networks. At this time, the HRPD access network will be replaced with the Wimax access network, the MME network element will be replaced with the SGSN network element in the UTRAN network, and the eNodeB network element in the E-UTRAN will be replaced with the RNC network element in the UTRAN network, and the other The processing flow and mechanism are the same as those in the above embodiment, and will not be described in detail here.

下面介绍本发明方法实施例三，取消 E-UTRAN到 HRPD的网络切换。参见图 8, 为方法实施例三流程图 1 , 包括： The third embodiment of the method of the present invention is described below, and the network switching from the E-UTRAN to the HRPD is cancelled. Referring to FIG. 8, a flow chart 1 of method embodiment 3 includes:

步骤 801 : UE或者 eNodeB决定取消 UE的切换，发送 Handover Cancel消息或者 HRPD Deregistration到 HRPD AN; Step 801: The UE or the eNodeB decides to cancel the handover of the UE, and sends a Handover Cancel message or HRPD Deregistration to the HRPD AN.

步骤 802: HRPD AN发送 Al l 注册请求（ Al 1 Registration Request ) 消息到 PDSN; Step 802: The HRPD AN sends an Al 1 Registration Request message to the PDSN.

步骤 803: PDSN删除为 UE在 HRPD网络中分配的资源，并通知 PDN GW删除为 UE在 HRPD网络分配的资源； Step 803: The PDSN deletes the resources allocated by the UE in the HRPD network, and notifies the PDN GW to delete the resources allocated by the UE in the HRPD network.

步骤 804: PDN GW删除为 UE在 HRPD网络分配的资源。 Step 804: The PDN GW deletes the resources allocated by the UE in the HRPD network.

参见图 9, 为方法实施例三详细流程图 2, 包括： Referring to FIG. 9, a detailed flowchart 2 of the method embodiment 3 includes:

步骤 901： UE通过 E-UTRAN网络预切换到 HRPD网络； Step 901: The UE pre-switches to the HRPD network through the E-UTRAN network.

步骤 902： HRPD AN发送 S 101 HO Command消息到 MME , 消息中包含 HRPD传输通道分配 (TCA, Traffic Channel Assignment)消息； Step 902: The HRPD AN sends an S101 HO Command message to the MME, where the message includes an HRPD Traffic Channel Assignment (TCA) message;

步骤 903: MME发送重定位命令（ Relocation Command ) 消息到 eNodeB, 消息中包含 HRPD TCA消息； Step 903: The MME sends a Relocation Command message to the eNodeB, where the message includes an HRPD TCA message.

步骤 904:如果切换取消决定由 eNodeB执行且 eNodeB经过网络条件测试决定执行切换取消操作（如 eNodeB发现 UE已经移出 HRPD网络的覆盖），则 eNodeB发送切换取消（ Handover Cancel )通知消息到 UE; 否则 eNodeB发送 HO Command消息到 UE , 命令 UE切换到 HRPD网络，消息中包含 HRPD TCA消息；步骤 905: UE或者 eNodeB通知 HRPD AN取消 UE的切换。通知具体可以为： 1] UE通知 HRPD AN取消切换： Step 904: If the handover cancellation decision is performed by the eNodeB and the eNodeB determines to perform the handover cancellation operation through the network condition test (eg, the eNodeB finds that the UE has moved out of the coverage of the HRPD network), the eNodeB sends a Handover Cancel notification message to the UE; otherwise, the eNodeB Sending a HO Command message to the UE, instructing the UE to switch to the HRPD network, where the message includes an HRPD TCA message; Step 905: The UE or the eNodeB notifies the HRPD AN to cancel the handover of the UE. The notification may be: 1] The UE notifies the HRPD AN to cancel the handover:

如步骤 904 , 切换取消决定是由 eNodeB作出的， eNodeB发送 Handover Cancel消息给 UE通知 UE切换取消 , UE再通知 HRPD AN取消切换。 In step 904, the handover cancellation decision is made by the eNodeB, and the eNodeB sends a Handover Cancel message to the UE to notify the UE that the handover is canceled, and the UE notifies the HRPD AN to cancel the handover.

或者，切换取消决定是由 UE作出的（如 UE发现自己已经移出 HRPD网络的覆盖），则 UE通过 E-UTRAN网络发送 Handover Cancel消息到 HRPD AN, 或者 UE发送 HRPD Deregistration消息到 HRPD AN, 通知 HRPD AN取消 UE的切换。 Alternatively, the handover cancellation decision is made by the UE (if the UE finds that it has moved out of the coverage of the HRPD network), the UE sends a Handover Cancel message to the HRPD AN through the E-UTRAN network, or the UE sends an HRPD Deregistration message to the HRPD AN to notify the HRPD. The AN cancels the handover of the UE.

UE在 HRPD Deregistration消息中增加指示位信息，以通知 HRPD AN这个 HRPD Deregistration消息是由于' 'Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration Cancel"导致的。 The UE adds indicator bit information to the HRPD Deregistration message to inform the HRPD AN that the HRPD Deregistration message is caused by ' 'Handover Cancel' or 'Optimized Handover Cancel' or 'Pre-registration Cancel'.

i. UE在 HRPD Deregistration消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel i. The UE enhances the "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel" in the HRPD Deregistration message.

Indication"„ Indication"

ii. UE在 HRPD Deregistration消息中增力口 "Deregistration Type"信元， UE 将该信元设置为 "Handover Cancel" 或者" Optimized Handover Cancel"或者 "Pre-registration Cancel"„ Ii. The UE adds a "Deregistration Type" cell to the HRPD Deregistration message, and the UE sets the cell to "Handover Cancel" or "Optimed Handover Cancel" or "Pre-registration Cancel"

iii. UE在 HRPD Deregistration消息中增加" Cause"信元， UE将该信元设置为' 'Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration Iii. The UE adds a "Cause" cell to the HRPD Deregistration message, and the UE sets the cell to 'Handover Cancel' or 'Optimized Handover Cancel' or Pre-registration

Cancel'O Cancel'O

这个指示位信元是可选的。 This indicator bit cell is optional.

如果 UE没有携带这个指示位信元 , 则 HRPD AN收到 HRPD Deregistration 消息后如果发现 UE之前已经预注册到 HRPD AN中，则 HRPD AN认为收到的 HRPD Deregistration消息是由于 Handover Cancel或者或者 Optimized Handover Cancel或者 Pre-registration Cancel导致。 If the UE does not carry the indicator bit cell, if the HRPD AN receives the HRPD Deregistration message and finds that the UE has previously pre-registered with the HRPD AN, the HRPD AN considers that the received HRPD Deregistration message is due to Handover Cancel or Optimized Handover Cancel. Or Pre-registration Cancel leads.

2] eNodeB决定取消 UE的切换， eNodeB发送 Handover Cancel消息到 HRPD AN。 2] The eNodeB decides to cancel the handover of the UE, and the eNodeB sends a Handover Cancel message to the HRPD AN.

步骤 906: HRPD AN收到上述的 Handover Cancel或者 HRPD Deregistration 消息后将 UE从 HRPD AN分离（Detach ) ； Step 906: The HRPD AN receives the Handover Cancel or HRPD Deregistration described above. After the message, the UE is separated from the HRPD AN (Detach);

HRPD AN发送 Al 1 Registration Request消息或者 Al 1 Deregistration Request消息到 PDSN请求 PDSN删除为 UE分配的资源； The HRPD AN sends an Al 1 Registration Request message or an Al 1 Deregistration Request message to the PDSN requesting the PDSN to delete the resource allocated for the UE;

HRPD AN在 Al 1 Registration Request消息中增加指示位信息，以通知 PDSN这个 Al 1 Registration Request消息是由于" Handover Cancel" 或 The HRPD AN adds indicator bit information to the Al 1 Registration Request message to inform the PDSN that the Al 1 Registration Request message is due to "Handover Cancel" or

"Optimized Handover Cancel"或" Pre-registration Cancel"导致的 ,且将 Lifetime信元设置为 0。 Caused by "Optimized Handover Cancel" or "Pre-registration Cancel" with the Lifetime cell set to 0.

1-1 HRPD AN在 Al 1 Registration Request消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; 1-1 HRPD AN in the Al 1 Registration Request message "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel Indication";

1-2 HRPD AN在 Al 1 Registration Request消息中增加" Registration Type"信元， HRPD AN将该信元设置为 "Handover Cancel"或者' Optimized Handover Cancel"或者" Pre-registration Cancel"; 1-2 HRPD AN adds a "Registration Type" cell to the Al 1 Registration Request message, and HRPD AN sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration Cancel";

1-3 HRPD AN在 Al 1 Registration Request消息中增加" Cause"信元， HRPD 1-3 HRPD AN adds "Cause" cell to Al 1 Registration Request message, HRPD

步骤 907： PDSN收到上述 Al 1 Registration Request消息后,释放为 UE分配的资源，通知 PCRF将保存的 PDSN地址等信息删除； Step 907: After receiving the foregoing Al 1 Registration Request message, the PDSN releases the resource allocated for the UE, and notifies the PCRF to delete the saved PDSN address and other information.

步骤 908: 如果 PDSN发现 PDN GW上的用户面路径已切换到 PDSN (即 Step 908: If the PDSN finds that the user plane path on the PDN GW has been switched to the PDSN (ie,

PDSN在预注册处理阶段已经发送过 Proxy BU消息通知 PDN GW切换用户面路径到 PDSN )时，则 PDSN发送 Proxy BU消息到 PDN GW通知 PDN GW切换用户面路径到 Serving GW, 同时通知 PDN GW删除为 UE在目标接入网络分配的资源； When the PDSN has sent a Proxy BU message to notify the PDN GW to switch the user plane path to the PDSN in the pre-registration processing phase, the PDSN sends a Proxy BU message to the PDN GW to notify the PDN GW to switch the user plane path to the Serving GW, and notifies the PDN GW to delete Resources allocated by the UE in the target access network;

PDSN在 Proxy BU消息中增加指示位信息以通知 PDN GW这个 Proxy BU消息是由于' 'Handover Cancel" 或者' Optimized Handover Cancel"或者 The PDSN adds indicator bit information to the Proxy BU message to inform the PDN GW that the Proxy BU message is due to ' 'Handover Cancel' or ' Optimized Handover Cancel' or

"Pre-registration Cancel"导致的且将 Proxy BU消息中的 Lifetime信元设置为 0 ,这样 PDN GW就会将用户面路径切换到源 E-UTRAN接入网络的用户面网元，且释放为 UE在 HRPD接入网络中分配的资源。指示位信息具体可以为以下方式之一： The "Pre-registration Cancel" causes the Lifetime cell in the Proxy BU message to be set to 0, so that the PDN GW switches the user plane path to the user plane network element of the source E-UTRAN access network and releases it as the UE. Resources allocated in the HRPD access network. The indicator bit information may specifically be one of the following ways:

a_l PDSN在 Proxy BU消息中增力口 "Handover Cancel Indication" 或者 A_l PDSN boosts the port "Handover Cancel Indication" in the Proxy BU message or

"Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; a_2 PDSN在 Proxy BU消息中增加" Update Type"信元， Proxy BU将该信元设置为 "Handover Cancel"或者' Optimized Handover Cancel"或者 "Optimized Handover Cancel Indication" or "Pre-registration Cancel Indication"; a_2 PDSN adds "Update Type" cell to Proxy BU message, Proxy BU sets the cell to "Handover Cancel" or 'Optimized Handover Cancel" or

"Pre-registration Cancel"; "Pre-registration Cancel";

a— 3 PDSN在 Proxy BU消息中增加" Cause"信元， PDSN将该信元设置为 "Handover Cancel"或者' Optimized Handover Cancel"或者" Pre-registration Cancel'O A-3 PDSN adds a "Cause" cell to the Proxy BU message. The PDSN sets the cell to "Handover Cancel" or "Optimed Handover Cancel" or "Pre-registration Cancel'O.

步骤 909: PDN GW收到上述 Proxy BU消息后，将用户面路径切回到源 Step 909: After receiving the Proxy BU message, the PDN GW cuts the user plane path back to the source.

E-UTRAN网络中的 Serving GW网元，同时 PDN GW删除为 UE在 HRPD接入网络中分配的资源，如为 UE分配的绑定緩存表项（ Binding Cache Entry ) , 保留 UE的 IP地址资源 , PDN GW从 PCRF获取 UE在源 E-UTRAN网络中的 PCC规则 , 恢复 PDN GW和源 E-UTRAN网络之间的资源； The Serving GW network element in the E-UTRAN network, and the PDN GW deletes the resources allocated by the UE in the HRPD access network, such as the Binding Cache Entry allocated for the UE, and reserves the IP address resource of the UE. The PDN GW acquires a PCC rule of the UE in the source E-UTRAN network from the PCRF, and restores resources between the PDN GW and the source E-UTRAN network;

步骤 910: PDN GW回 Proxy BA消息到 PDSN; Step 910: The PDN GW returns a Proxy BA message to the PDSN.

步骤 911 : PDSN回 Al l Registration Reply消息或者 Al l Deregistration Reply 消息到 HRPD AN; Step 911: The PDSN returns an Al l Registration Reply message or an Al l Deregistration Reply message to the HRPD AN;

步骤 912 : HRPD AN回 Handover Cancel Acknowledge消息或者 HRPD Deregistration Acknowledge消息到 UE, 或者 HRPD AN回 Handover Cancel Acknowledge消息到 eNodeB。 Step 912: The HRPD AN returns a Handover Cancel Acknowledge message or an HRPD Deregistration Acknowledge message to the UE, or the HRPD AN returns a Handover Cancel Acknowledge message to the eNodeB.

实施例三这种机制也能应用到 3GPP到非 3GPP网络的切换取消处理，如 UTRAN到 Wimax网络的切换取消处理。这时 HRPD接入网络将被替换为 Wimax 接入网络， PDSN将被替换为 Wimax网络中的 ASN-GW, MME网元将替换为 UTRAN网络中的 SGSN网元，而 E-UTRAN中的 eNodeB网元将替换为 UTRAN 网络中的 RNC网元，其它的处理流程和机制同上面实施例中的处理，这里不再详细描述。 Embodiment 3 This mechanism can also be applied to handover cancellation processing from 3GPP to non-3GPP networks, such as handover cancellation processing from UTRAN to Wimax networks. At this time, the HRPD access network will be replaced by the Wimax access network, the PDSN will be replaced with the ASN-GW in the Wimax network, the MME network element will be replaced with the SGSN network element in the UTRAN network, and the eNodeB network in the E-UTRAN The element will be replaced by the RNC network element in the UTRAN network. Other processing procedures and mechanisms are the same as those in the above embodiment, and will not be described in detail here.

下面介绍方法实施例四，是描述从 E-UTRAN到 HRPD切换取消的方案，在上述实施例三中 , 是由 PDSN通知 PDN GW删除为 UE在 HRPD分配的资源 , 而在本实施例中，是釆用源网络网元（例如 Serving GW )通知 PDN GW删除为 UE在 HRPD分配的资源。 The following describes the fourth embodiment of the method, which is a description of the handover from the E-UTRAN to the HRPD. In the third embodiment, the PDSN notifies the PDN GW to delete the resources allocated by the UE in the HRPD, but in this embodiment,通知Use the source network element (such as Serving GW) to notify the PDN GW to delete The resources allocated by the UE in the HRPD.

参见图 10 , 为方法实施例四流程图 1 , 包括： Referring to FIG. 10, a flow chart 1 of method embodiment 4 includes:

步骤 1001 : UE或者 eNodeB决定取消 UE的切换或者预注册，发送 Handover Cancel消息或者 HRPD Deregistration消息到 HRPD AN; Step 1001: The UE or the eNodeB decides to cancel the handover or pre-registration of the UE, and sends a Handover Cancel message or an HRPD Deregistration message to the HRPD AN.

步骤 1002: HRPD AN发送 Al l Registration Request消息到 PDSN, PDSN释放为 UE分配的 HRPD网络资源； Step 1002: The HRPD AN sends an Al l Registration Request message to the PDSN, and the PDSN releases the HRPD network resource allocated to the UE.

步骤 1003： MME发送 Update Bearer Request消息到 Serving GW; Step 1003: The MME sends an Update Bearer Request message to the Serving GW.

步骤 1004： Serving GW发送 Update Bearer Request消息到 PDN GW; Step 1004: The Serving GW sends an Update Bearer Request message to the PDN GW.

步骤 1005： PDN GW将用户面路径切回到源 E-UTRAN网络中的网元 Serving GW , 同时 PDN GW将目标接入网络 HRPD中的资源释放。 Step 1005: The PDN GW cuts the user plane path back to the network element Serving GW in the source E-UTRAN network, and the PDN GW releases the resources in the target access network HRPD.

参见图 11 , 为方法实施例四详细流程图 2, 包括： Referring to FIG. 11, a detailed flowchart 2 of the method embodiment 4 includes:

步骤 1101至步骤 1105同步骤 901至步骤 905的处理。 Steps 1101 to 1105 are the same as steps 901 to 905.

步骤 1106: HRPD AN收到上述的 Handover Cancel或 HRPD Deregistration 消息后将 UE从 HRPD AN分离（Detach ) ； Step 1106: After receiving the Handover Cancel or HRPD Deregistration message, the HRPD AN separates the UE from the HRPD AN (Detach);

HRPD AN发送 Al 1 Registration Request消息或者 Al 1 Degistration Request 到 PDSN请求 PDSN删除为 UE分配的资源； PDSN收到上述 Al 1 Registration Request消息或者 Al 1 Degistration Request后释放资源，然后回 Al 1 Registration Reply消息或者 Al 1 Degistration Reply消息到 HRPD AN; The HRPD AN sends an Al 1 Registration Request message or an Al 1 Degistration Request to the PDSN to request the PDSN to delete the resource allocated for the UE. After receiving the Al 1 Registration Request message or the Al 1 Degistration Request, the PDSN releases the resource, and then returns the Al 1 Registration Reply message or Al 1 Degistration Reply message to HRPD AN;

其中， HRPD AN在 Al 1 Registration Request消息中增加指示位信息，以通知 PDSN这个 Al 1 Registration Request消息是由于" Handover Cancel"或 The HRPD AN adds the indication bit information in the Al 1 Registration Request message to notify the PDSN that the Al 1 Registration Request message is due to "Handover Cancel" or

指示位信息处理同实施例三中的处理。 The indication bit information is processed in the same manner as in the third embodiment.

步骤 1107：如果 HRPD AN收到的 Handover Cancel/HRPD Deregistration消息由 UE发出的，则 HRPD AN发送 Handover Cancel Acknowledge/HRPD Step 1107: If the Handover Cancel/HRPD Deregistration message received by the HRPD AN is sent by the UE, the HRPD AN sends a Handover Cancel Acknowledge/HRPD

Deregistration Acknowledge消息到 UE; Deregistration Acknowledge message to the UE;

步骤 1108: 如果 HRPD AN收到的 Handover Cancel消息由 eNodeB发出的，则 HRPD AN发送 Handover Cancel Acknowledge消息到 MME；否则 HRPD AN发送 Handover Cancel消息到 MME; 步骤 1109: MME收到上述消息后，如果发现上述消息是 E-UTRAN到 HRPD 切换取消或者优化切换取消或者预注册取消导致的，则 MME发送 Update Bearer Request消息到 Serving GW请求 Serving GW通知 PDN GW切换用户面路径到 Serving GW, 同时通知 PDN GW删除为 UE在 HRPD接入网络内分配的资源； Step 1108: If the Handover Cancel message received by the HRPD AN is sent by the eNodeB, the HRPD AN sends a Handover Cancel Acknowledge message to the MME; otherwise, the HRPD AN sends a Handover Cancel message to the MME; Step 1109: After the MME receives the foregoing message, if the message is found to be E-UTRAN-to-HRPD handover cancellation or optimization handover cancellation or pre-registration cancellation, the MME sends an Update Bearer Request message to the Serving GW to request the Serving GW to notify the PDN GW to switch. The user plane path to the Serving GW, and notifies the PDN GW to delete the resources allocated for the UE in the HRPD access network;

MME在 Update Bearer Request消息中增加指示位信息以通知 Serving GW 这个 Update Bearer Request消息是由于' 'Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration Cancel"导致。 The MME adds an indication bit information to the Update Bearer Request message to notify the Serving GW that the Update Bearer Request message is caused by ' 'Handover Cancel' or 'Optimized Handover Cancel' or 'Pre-registration Cancel'.

a) MME在 Update Bearer Request消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel a) MME enhances the "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel" in the Update Bearer Request message

Indication"; Indication";

b) MME在 Update Bearer Request消息中增加" Update Type"信元， MME将该信元设置为 "Handover Cancel"或者' Optimized Handover Cancel"或者 b) The MME adds an "Update Type" cell to the Update Bearer Request message, and the MME sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or

"Pre-registration Cancel"; "Pre-registration Cancel";

c) MME在 Update Bearer Request消息中增加" Cause"信元， MME将该信元设置为 "Handover Cancel"或者' Optimized Handover Cancel"或者 c) The MME adds a "Cause" cell to the Update Bearer Request message, and the MME sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or

"Pre-registration Cancel"„ "Pre-registration Cancel"

步骤 1110: Serving GW收到上述 Update Bearer Request消息后，判断是否已将用户面路径切换到目标网络，若是，发送消息通知 PDN GW将用户面路径切回到 Serving GW。 Step 1110: After receiving the Update Bearer Request message, the Serving GW determines whether the user plane path has been switched to the target network. If yes, sends a message to inform the PDN GW to cut the user plane path back to the Serving GW.

如果 Serving GW和 PDN GW之间的接口协议使用 GTP, 则 Serving GW发送 Update Bearer Request消息到 PDN GW。 If the interface protocol between the Serving GW and the PDN GW uses GTP, the Serving GW sends an Update Bearer Request message to the PDN GW.

如果 Serving GW和 PDN GW之间的接口协议使用 PMIP , 则 Serving GW发送 Proxy BU消息到 PDN GW。 If the interface protocol between the Serving GW and the PDN GW uses PMIP, the Serving GW sends a Proxy BU message to the PDN GW.

Serving GW在 Proxy BU消息或者 Update Bearer Request消息中增力口指示位信息以通知 PDN GW这个 Proxy BU消息是由于" Handover Cancel"或者 Serving GW in the Proxy BU message or Update Bearer Request message to increase the port indication bit information to inform the PDN GW that the Proxy BU message is due to "Handover Cancel" or

"Optimized Handover Cancel"或者" Pre-registration Cancel"导致 , 对于 Proxy BU消息， Serving GW将 Proxy BU消息中的 Lifetime信元设置为非 0的一个数值，这样 PDN GW就会将用户面路径切换到 Serving GW且释放为 UE在目标接入网络中分配的资源。 "Optimized Handover Cancel" or "Pre-registration Cancel" causes the Serving GW to set the Lifetime cell in the Proxy BU message to a value other than 0 for the Proxy BU message. In this way, the PDN GW will switch the user plane path to the Serving GW and release the resources allocated by the UE in the target access network.

a) Serving GW在 Proxy BU消息或者 Update Bearer Request消息中增力口 a) Serving GW boosts the port in the Proxy BU message or the Update Bearer Request message.

"Handover Cancel Indication" 或者' Optimized Handover Cancel Indication" 或者" Pre-registration Cancel Indication"; "Handover Cancel Indication" or 'Optimized Handover Cancel Indication' or "Pre-registration Cancel Indication";

b) Serving GW在 Proxy BU消息或者 Update Bearer Request消息中增力口 b) Serving GW boosts the port in the Proxy BU message or the Update Bearer Request message.

"Registration Type"信元， Serving GW将该信元设置为 "Handover Cancel" 或' Optimized Handover Cancel"或" Pre-registration Cancel"; "Registration Type" cell, Serving GW sets the cell to "Handover Cancel" or 'Optimized Handover Cancel' or "Pre-registration Cancel";

c) Serving GW在 Proxy BU消息或者 Update Bearer Request消息中增加 c) Serving GW adds in Proxy BU message or Update Bearer Request message

"Cause"信元， Serving GW将该信元设置为 "Handover Cancel" 或者 "Cause" cell, Serving GW sets the cell to "Handover Cancel" or

"Optimized Handover Cancel"或者" Pre-registration Cancel"„ "Optimized Handover Cancel" or "Pre-registration Cancel"

PDN GW收到上述消息后将用户面路径切回到 Serving GW网元，同时 PDN GW将 HRPD侧的资源释放掉 ,如为 UE在 HRPD侧分配的绑定緩存表项（ Binding Cache Entry ) , 保留 UE的 IP地址资源。 After receiving the above message, the PDN GW cuts the user plane path back to the Serving GW network element, and the PDN GW releases the resources on the HRPD side, such as the Binding Cache Entry allocated by the UE on the HRPD side. The IP address resource of the UE.

PDN GW收到上述消息后联系 PCRF获取 UE在源 E-UTRAN网络中的 PCC 规则 , 恢复 PDN GW和源 E-UTRAN网络之间的资源。 After receiving the above message, the PDN GW contacts the PCRF to obtain the PCC rule of the UE in the source E-UTRAN network, and restores the resource between the PDN GW and the source E-UTRAN network.

步骤 1111： Serving GW发送 Update Bearer Response消息到 MME。 Step 1111: The Serving GW sends an Update Bearer Response message to the MME.

步骤 1112: 如果 MME在步骤 1108中收到 HRPD AN发送的 Handover Cancel 消息，则 MME发送 Handover Cancel Acknowledge消息到 HRPD AN; HRPD AN 回 Handover Cancel Acknowledge消息或者 HRPD Deregistration Acknowledge消息到 UE , 或者 HRPD AN回 Handover Cancel Acknowledge消息到 eNodeB。 Step 1112: If the MME receives the Handover Cancel message sent by the HRPD AN in step 1108, the MME sends a Handover Cancel Acknowledge message to the HRPD AN; the HRPD AN returns a Handover Cancel Acknowledge message or an HRPD Deregistration Acknowledge message to the UE, or the HRPD AN back Handover Cancel Acknowledge message to eNodeB.

实施例四这种机制也能应用到 3GPP到非 3GPP网络的切换取消处理，如 UTRAN到 Wimax网络的切换取消处理。这时 HRPD接入网络将被替换为 Wimax 接入网络， PDSN将被替换为 Wimax网络中的 ASN-GW, MME网元将替换为 UTRAN网络中的 SGSN网元，而 E-UTRAN中的 eNodeB网元将替换为 UTRAN 网络中的 RNC网元，其它的处理流程和机制同上面实施例中的处理，这里不再详细描述。 Embodiment 4 This mechanism can also be applied to handover cancellation processing from 3GPP to non-3GPP networks, such as handover cancellation processing from UTRAN to Wimax networks. At this time, the HRPD access network will be replaced by the Wimax access network, the PDSN will be replaced with the ASN-GW in the Wimax network, the MME network element will be replaced with the SGSN network element in the UTRAN network, and the eNodeB network in the E-UTRAN The element will be replaced by the RNC network element in the UTRAN network. Other processing procedures and mechanisms are the same as those in the above embodiment, and will not be described in detail here.

下面介绍本发明方法实施例五，取消 3GPP网络之间的网络切换。参见图 12, 为方法实施例五流程图 1 , 包括： Embodiment 5 of the method of the present invention is described below, and network switching between 3GPP networks is cancelled. Referring to FIG. 12, a flow chart 1 of method embodiment 5 includes:

步骤 1201 : UE或者源接入网络的接入网元决定取消 UE 的切换，发送 Handover Cancel消息或者 Detach Request到目标接入网络的移动性管理网元 (如 MME/SGSN ); Step 1201: The access network element of the UE or the source access network determines to cancel the handover of the UE, and sends a Handover Cancel message or a Detach Request to the mobility management network element (such as MME/SGSN) of the target access network.

步骤 1202: 目标接入网络的移动性管理网元发送 Delete Bearer Request消息到用户面实体，例如 Serving GW; Step 1202: The mobility management network element of the target access network sends a Delete Bearer Request message to the user plane entity, for example, Serving GW;

步骤 1203： Serving GW删除为 UE在目标网络中分配的资源。 Step 1203: The Serving GW deletes the resources allocated by the UE in the target network.

参见图 13 , 为实施例五详细流程图 2, 包括： Referring to FIG. 13, a detailed flowchart 2 for Embodiment 5 includes:

步骤 1301： UE通过源网络预切换到目标网络； Step 1301: The UE pre-switches to the target network through the source network.

源网络和目标网络可以为 3GPP网络中的任何一种，如 GPRS、 UMTS , The source network and the target network may be any one of 3GPP networks, such as GPRS, UMTS,

E-UTRAN。 E-UTRAN.

步骤 1302: 源网络的接入网元 ( NE, Network Element )或者 UE决定取消 UE的切换，发送 Handover Cancel或者 Detach Request消息到源接入网络的移动性管理网元（移动性管理网元也称为核心网元）； Step 1302: The access network element (NE, Network Element) of the source network or the UE decides to cancel the handover of the UE, and sends a Handover Cancel or Detach Request message to the mobility management network element of the source access network (the mobility management network element is also called For the core network element);

源接入网元可以为 BSS、 RNC、 eNodeB中的一个，源移动性管理网元可以为 SGSN、 MME中的一个。 The source access network element may be one of the BSS, the RNC, and the eNodeB, and the source mobility management network element may be one of the SGSN and the MME.

UE在 Detach Request消息中增加指示位信息，以通知源移动性管理网元或者目标移动性管理网元这个 Detach Request消息是由于" Handover Cancel"导致的。 The UE adds indicator bit information to the Detach Request message to notify the source mobility management network element or the target mobility management network element that the Detach Request message is caused by "Handover Cancel".

1 ) UE在 Detach Request消息中增力口 "Handover Cancel Indication"; 1) The UE adds a force in the Detach Request message "Handover Cancel Indication";

2 ) UE在 Detach Request消息中增加" Detach Type"信元， UE将该信元设置为' 'Handover Cancel"; 2) The UE adds a "Detach Type" cell to the Detach Request message, and the UE sets the cell to ''Handover Cancel';

UE在 Detach Request消息中增加" Cause"信元， UE将该信元设 The UE adds a "Cause" cell to the Detach Request message, and the UE sets the cell.

置为' 'Handover Cancel"。 Set to ' 'Handover Cancel'.

这个指示位信元是可选的。 This indicator bit cell is optional.

如果 UE没有携带这个指示位信元，则源移动性管理网元或者目标移动性管理网元收到 Detach Request消息后如果发现 UE之前已经预切换到目标接入网 Request消息是由于 Handover Cancel导致的。息到目标接入网络的移动性管理网元（即目标接入网络的移动性管理网元）；目标移动性管理网元可以为 SGSN、 MME中的一个。 If the UE does not carry the indicator bit cell, the source mobility management network element or the target mobility management network element receives the Detach Request message and finds that the UE has previously pre-switched to the target access network. The Request message is caused by the Handover Cancel. The mobility management network element of the target access network (ie, the mobility management network element of the target access network); the target mobility management network element may be one of the SGSN and the MME.

步骤 1304: 目标移动性管理网元收到上述的 Handover Cancel或者 Detach Step 1304: The target mobility management network element receives the above Handover Cancel or Detach

Request消息后发起用户 Detach流程，将 UE从目标移动性管理网元中分离。 After the Request message, the user Detach process is initiated to separate the UE from the target mobility management network element.

目标移动性管理网元通知目标接入网元释放资源。如果目标接入网络为 E-UTRAN,则 MME发送 SI Release Command消息到 eNodeB通知 eBodeB释放资源；如果目标接入网络为 UTRAN, 则 SGSN发送 Iu Release Command消息到 RNC通知 RNC释放资源；如果目标接入网络为 GERAN, 则 SGSN发送 Delete PFC Request消息到 BSS通知 BSS释放资源。 The target mobility management network element notifies the target access NE to release the resource. If the target access network is E-UTRAN, the MME sends an SI Release Command message to the eNodeB to notify the eBodeB to release the resource; if the target access network is UTRAN, the SGSN sends an Iu Release Command message to the RNC to notify the RNC to release the resource; If the network is GERAN, the SGSN sends a Delete PFC Request message to the BSS to notify the BSS to release the resource.

步骤 1305：目标移动性管理网元发送 Delete Bearer Request消息到 Serving GW; 目标移动性管理网元在 Delete Bearer Request消息中增加指示位信息以通知 Serving GW这个 Delete Bearer Request消息是由于" Handover Cancel"导致的。 Step 1305: The target mobility management network element sends a Delete Bearer Request message to the Serving GW. The target mobility management network element adds the indication bit information in the Delete Bearer Request message to notify the Serving GW that the Delete Bearer Request message is caused by "Handover Cancel". of.

a) 目标移动性管理网元在 Delete Bearer Request消息中增加 "Handover Cancel Indication"; a) The target mobility management network element adds "Handover Cancel Indication" to the Delete Bearer Request message;

b) 目标移动性管理网元在 Delete Bearer Request消息中增加" Delete Type" 信元，目标移动性管理网元将该信元设置为 "Handover Cancel"; b) The target mobility management network element adds a "Delete Type" cell to the Delete Bearer Request message, and the target mobility management network element sets the cell to "Handover Cancel";

c) 目标移动性管理网元在 Delete Bearer Request消息中增加" Cause"信元，目标移动性管理网元将该信元设置为 "Handover Cancel"„ c) The target mobility management network element adds a "Cause" cell to the Delete Bearer Request message, and the target mobility management network element sets the cell to "Handover Cancel".

步骤 1306: Serving GW收到上述消息后如果发现删除承载请求是由于切换取消导致的，则 Serving GW不通知 PDN GW释放资源。 Step 1306: If the Serving GW receives the above message and finds that the deletion of the bearer request is caused by the handover cancellation, the Serving GW does not notify the PDN GW to release the resource.

如果 Serving GW和 PDN GW之间的接口协议使用 PMIP协议 , 则 Serving GW收到上述 Delete Bearer Request消息后，通知 PCRF将保存的 Serving GW地址等信息删除； If the interface protocol between the Serving GW and the PDN GW uses the PMIP protocol, the Serving GW notifies the PCRF to delete the saved Serving GW address and the like after receiving the Delete Bearer Request message.

步骤 1307： Serving GW回 Delete Bearer Response消息到目标移动性管理网元； Step 1307: Serving GW returns a Delete Bearer Response message to the target mobility management network element;

步骤 1308: 目标移动性管理网元回 Handover Cancel Acknowledge消息或者 Detach Accept消息到 UE (通过源接入网元和源移动性管理网元），或者目标移动性管理网元回 Handover Cancel Acknowledge消息到源接入网元（通过源移动性管理网元）。 Step 1308: The target mobility management network element returns a Handover Cancel Acknowledge message or The Detach Accept message is sent to the UE (through the source access NE and the source mobility management NE), or the target mobility management NE returns the Handover Cancel Acknowledge message to the source access NE (through the source mobility management NE).

下面介绍本发明方法实施例六，取消非 3GPP网络之间的网络切换。 Embodiment 6 of the method of the present invention is described below to cancel network switching between non-3GPP networks.

参见图 14, 为方法实施例六流程图 1 , 包括： Referring to FIG. 14, a flow chart 1 of method embodiment 6 includes:

步骤 1401： UE或者源接入网元决定取消 UE的切换，发送 Handover Cancel 消息或者 Deregistration消息到目标移动性管理网元，如 HRPD网络中的 HRPD AN, Wimax网络中的 ASN GW (接入业务网络网关， Access Service Network Gateway ) , WLAN网络中的 EPDG(演进分组数据网关， Evolved Packet Data Gateway ) ； Step 1401: The UE or the source access NE determines to cancel the handover of the UE, and sends a Handover Cancel message or a Deregistration message to the target mobility management network element, such as HRPD AN in the HRPD network, and ASN GW in the Wimax network (access service network). Gateway, Access Service Network Gateway), EPDG (Evolved Packet Data Gateway) in the WLAN network;

步骤 1402: 目标移动性管理网元发送资源释放请求消息到目标用户面实体，如 HRPD网络中的 PDSN, Wimax网络中 ASN GW, WLAN网络中的 EPDG, 请求目标用户面网元删除为 UE分配的资源； Step 1402: The target mobility management network element sends a resource release request message to the target user plane entity, such as the PDSN in the HRPD network, the ASN GW in the Wimax network, and the EPDG in the WLAN network, requesting the target user plane network element to be deleted and allocated to the UE. Resource

需要说明的是，本发明实施例不限定资源释放请求消息的名称。对于不同的非 3GPP接入网络来说，其消息名称是不一样的，如对于 HRPD网络中这个消息可以是 Al 1 Registration Request或者为 Al 1 Deregistration Request消息 , 对于 Wimax网络来说，如果其移动性管理网元和用户面实体都在 ASN GW实现，则这个资源释放请求消息就为内部消息。 It should be noted that the embodiment of the present invention does not limit the name of the resource release request message. For different non-3GPP access networks, the message name is different. For example, the message in the HRPD network may be an Al 1 Registration Request or an Al 1 Deregistration Request message. For the Wimax network, if it is mobility Both the management network element and the user plane entity are implemented in the ASN GW, and the resource release request message is an internal message.

步骤 1403: 目标用户面实体删除为 UE在目标接入网络中分配的资源，并通过代理绑定更新（ Proxy BU )消息通知用户面锚点网元（ PDN GW )释放为 UE在目标接入网络中分配的资源； Step 1403: The target user plane entity deletes the resource allocated by the UE in the target access network, and notifies the user that the anchor point network element (PDN GW) is released as the UE in the target access network by using a proxy binding update (Proxy BU) message. Resources allocated in ;

步骤 1404: PDN GW删除为 UE在目标接入网络中分配的资源。 Step 1404: The PDN GW deletes the resources allocated by the UE in the target access network.

参见图 15 , 为实施例五详细流程图 2, 包括： Referring to FIG. 15, a detailed flowchart 2 for Embodiment 5 includes:

步骤 1501： UE通过源网络预切换到目标网络； Step 1501: The UE pre-switches to the target network through the source network.

源网络和目标网络可以为非 3GPP网络中的任何一种，如 WLAN、 Wimax 和 CDMA等网络。 The source network and the target network may be any of the non-3GPP networks, such as networks such as WLAN, Wimax, and CDMA.

步骤 1502: 目标移动性管理网元发送切换命令到源移动性管理网元；目标移动性管理网元（目标接入网络的移动性管理网元）可以为 HRPD网络中的 HRPD AN, 可以为 Wimax网络中的 ASN GW, 可以为 WLAN网络中的 ePDG„ Step 1502: The target mobility management network element sends a handover command to the source mobility management network element. The target mobility management network element (the mobility management network element of the target access network) may be an HRPD AN in the HRPD network, which may be Wimax. The ASN GW in the network can be in the WLAN network. ePDG„

步骤 1503: 源移动性管理网元（源接入网络的移动性管理网元）发送切换命令到源接入网元； Step 1503: The source mobility management network element (the mobility management network element of the source access network) sends a handover command to the source access network element.

源接入网元（源接入网络的接入网元）可以为 HRPD网络的 HRPD AN, 可以为 Wimax网络中的 B S (基站， Base Station ) 。 The source access network element (the access network element of the source access network) may be the HRPD AN of the HRPD network, and may be a Bs (base station, Base Station) in the Wimax network.

步骤 1504:如果切换取消决定由源接入网元执行且源接入网元经过网络条件测试决定执行切换取消操作（如源接入网元发现 UE已经移出目标接入网络的覆盖），则源接入网元发送切换取消（ Handover Cancel )通知消息到 UE; 否则源接入网元发送切换命令消息到 UE; Step 1504: If the handover cancellation decision is performed by the source access NE and the source access NE determines to perform the handover cancellation operation after the network condition test (eg, the source access NE discovers that the UE has moved out of the coverage of the target access network), then the source The access network element sends a Handover Cancel notification message to the UE; otherwise, the source access network element sends a handover command message to the UE;

步骤 1505: UE或是源接入网元通知目标移动性管理网元取消切换； Step 1505: The UE or the source access NE notifies the target mobility management network element to cancel the handover.

1 ) UE通知目标移动性管理网元（目标接入网络的移动性管理网元 )取消切换： 1) The UE notifies the target mobility management network element (the mobility management network element of the target access network) to cancel the handover:

如步骤 1504 , 切换取消决定是由源接入网元作出的，源接入网元发送 Handover Cancel消息给 UE通知 UE切换取消， UE再通知目标接入网络的移动性管理网元取消切换。 In step 1504, the handover cancellation decision is made by the source access network element, and the source access NE sends a Handover Cancel message to the UE to notify the UE that the handover is canceled, and the UE notifies the mobility management network element of the target access network to cancel the handover.

或者切换取消决定是由 UE作出的（如 UE发现自己已经移出目标接入网络的覆盖），则 UE通过源接入网络发送 Handover Cancel消息或去注册消息到目标移动性管理网元，通知目标移动性管理网元切换取消。 Or the handover cancellation decision is made by the UE (if the UE finds that it has removed the coverage of the target access network), the UE sends a Handover Cancel message or a registration message to the target mobility management network element through the source access network to notify the target mobile. The sex management NE switch is canceled.

当 UE向目标移动性管理网元发送去注册消息时， UE在去注册消息中增加指示位信息以通知目标移动性管理网元这个去注册消息是由于 "Handover When the UE sends a deregistration message to the target mobility management network element, the UE adds the indication bit information to the target mobility management network element to notify the target mobility management network element that the deregistration message is due to "Handover".

Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration cancel"导致。 Cancel" or 'Optimized Handover Cancel' or "Pre-registration cancel" causes .

① UE在去注册消息中增力口 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; 1 The UE adds a force "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel Indication" in the deregistration message;

② UE在去注册消息中增加" Detach Type"信元， UE将该信元 2 The UE adds a "Detach Type" cell to the deregistration message, and the UE adds the cell.

设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者 Set to "Handover Cancel" or 'Optimized Handover Cancel' or

"Pre-registration Cancel"; "Pre-registration Cancel";

③ UE在去注册消息中增加" Cause"信元， UE将该信元设置为 "Handover Cancel" 或者' Optimized Handover Cancel"或者" Pre-registration Cancel"„ 这个指示位信元是可选的。 3 The UE adds a "Cause" cell to the deregistration message, and the UE sets the cell to "Handover Cancel" or "Optimed Handover Cancel" or "Pre-registration Cancel". This indicator bit cell is optional.

如果 UE没有携带这个指示位信元，则目标移动性管理网元收到去注册消息后，如果发现 UE之前已经预注册到目标接入网络的移动性管理网元中，则目标移动性管理网元认为收到的去注册消息是由于 Handover Cancel或者 If the UE does not carry the indicator bit cell, the target mobility management network element receives the deregistration message, and if the UE is previously pre-registered into the mobility management network element of the target access network, the target mobility management network Yuan believes that the received registration message is due to Handover Cancel or

Optimized Handover Cancel或者 pre-registration cancel导致。消切换。 Optimized Handover Cancel or pre-registration cancel causes . Cancel the switch.

步骤 1506: 目标移动性管理网元收到上述 Handover Cancel或者去注册消息后，将 UE从目标移动性管理网元中分离（Detach ) Step 1506: After receiving the Handover Cancel or the deregistration message, the target mobility management network element separates the UE from the target mobility management network element (Detach).

目标移动性管理网元发送资源释放请求（ Resource Release Request ) 消息到目标用户面网元，请求目标用户面网元删除为 UE分配的资源； The target mobility management network element sends a resource release request (Resource Release Request) message to the target user plane network element, and requests the target user plane network element to delete the resource allocated to the UE;

需要说明的是，本发明实施例不限定资源释放请求消息的名称。对于不同的非 3GPP接入网络来说，其消息名称是不一样的，如对于 HRPD网络中这个消息可以是 Al 1 Registration Request或者为 Al 1 Deregistration Request消息 , 对于 Wimax网络来说，如果其移动性管理网元和用户面实体都在 ASN GW实现的话，则这个资源释放请求消息就为内部消息。 It should be noted that the embodiment of the present invention does not limit the name of the resource release request message. For different non-3GPP access networks, the message name is different. For example, the message in the HRPD network may be an Al 1 Registration Request or an Al 1 Deregistration Request message. For the Wimax network, if it is mobility If both the management network element and the user plane entity are implemented in the ASN GW, the resource release request message is an internal message.

目标移动性管理网元在 Resource Release Request消息中增加指示位信息，以通知目标用户面网元（目标网络的用户面网元）这个 Resource Release Request消息是由于' 'Handover Cancel" 或' Optimized Handover Cancel"或 "Pre-registration Cancel"导致的。 The target mobility management network element adds indicator bit information in the Resource Release Request message to notify the target user plane network element (user plane network element of the target network) that the Resource Release Request message is due to ' 'Handover Cancel' or ' Optimized Handover Cancel "Or" Pre-registration Cancel".

(1)目标接入网络的移动性管理网元在 Resource Release Request消息中增力口' 'Handover Cancel Indication"或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; (1) The mobility management network element of the target access network enhances the 'Handover Cancel Indication' or 'Optimized Handover Cancel Indication' or 'Pre-registration Cancel Indication' in the Resource Release Request message;

(2)目标接入网络的移动性管理网元在 Resource Release Request消息中增加" Delete Type"信元， MME将该信元设置为 "Handover Cancel" 或者 (2) The mobility management network element of the target access network adds a "Delete Type" cell to the Resource Release Request message, and the MME sets the cell to "Handover Cancel" or

"Optimized Handover Cancel"或者" Pre-registration Cancel"; "Optimized Handover Cancel" or "Pre-registration Cancel";

(3)目标接入网络的移动性管理网元在 Resource Release Request消息中增加" Cause"信元， MME将该信元设置为 "Handover Cancel" 或者" Optimized Handover Cancel"或者" Pre-registration Cancel"„ (3) The mobility management network element of the target access network adds a "Cause" cell to the Resource Release Request message, and the MME sets the cell to "Handover Cancel" or "Optimed". Handover Cancel" or "Pre-registration Cancel"

步骤 1507: 目标用户面网元删除为 UE在目标接入网络分配的资源。 Step 1507: The target user plane network element is deleted as a resource allocated by the UE in the target access network.

目标用户面网元收到上述消息后，通知 PCRF将保存的目标用户面网元地址等信息删除。 After receiving the above message, the target user plane network element notifies the PCRF to delete the saved target user plane network element address and other information.

步骤 1508: 如果 PDN GW上的用户面路径已切换到目标用户面网元（即目标接入网络的用户面网元在预注册阶段已经发送过 Proxy BU消息通知 PDN GW切换用户面路径到目标接入网络的用户面网元）时，则目标用户面网元发送 Proxy BU消息到 PDN GW; Step 1508: If the user plane path on the PDN GW has been switched to the target user plane network element (that is, the user plane network element of the target access network has sent a Proxy BU message in the pre-registration phase to notify the PDN GW to switch the user plane path to the target interface. When the user plane network element of the network is entered, the target user plane network element sends a Proxy BU message to the PDN GW;

其中，目标用户面网元在 Proxy BU消息中增加指示位信息 , 以通知 PDN GW这个 Proxy BU消息是由于" Handover Cancel"或者' Optimized Handover The target user plane network element adds indicator bit information to the Proxy BU message to notify the PDN GW that the Proxy BU message is due to "Handover Cancel" or "Optimized Handover".

Cancel"或" Pre-registration Cancel"导致的，且将 Proxy BU消息中的 Lifetime信元设置为 0 , 这样 PDN GW就会将用户面路径切换到源用户面网元，且释放为 UE 在目标接入网络中分配的资源。 Caused by Cancel" or "Pre-registration Cancel", and the Lifetime cell in the Proxy BU message is set to 0, so that the PDN GW will switch the user plane path to the source user plane network element, and release it as the UE in the target connection. Into the resources allocated in the network.

A ) 目标接入网络的用户面网元在 Proxy BU消息中增加 "Handover A) The user plane network element of the target access network adds "Handover" to the Proxy BU message.

Cancel Indication" 或者' Optimized Handover Cancel Indication"或者 Cancel Indication" or 'Optimized Handover Cancel Indication' or

"Pre-registration Cancel Indication"。 "Pre-registration Cancel Indication".

B ) 目标接入网络的用户面网元在 Proxy BU消息中增加" Update Type" 信元 , Proxy BU将该信元设置为 "Handover Cancel" 或者" Optimized Handover Cancel"或者" Pre-registration Cancel Indication"„ B) The user plane network element of the target access network adds an "Update Type" cell to the Proxy BU message, and the Proxy BU sets the cell to "Handover Cancel" or "Optimed Handover Cancel" or "Pre-registration Cancel Indication". „

C ) 目标接入网络的用户面网元在 Proxy BU消息中增加" Cause"信元，目标接入网络的用户面网元将该信元设置为 "Handover Cancel" 或者 C) The user plane network element of the target access network adds a "Cause" cell to the Proxy BU message, and the user plane network element of the target access network sets the cell to "Handover Cancel" or

步骤 1509: PDN GW收到上述 Proxy BU消息后，删除为 UE在目标接入网络中分配的资源 ,如为 UE在 E-UTRAN接入网络内分配的承载上下文（ Bearer Context )或者为 UE创建的绑定緩存表项（ Binding Cache Entry ) , 保留 UE 的 IP地址资源； Step 1509: After receiving the Proxy BU message, the PDN GW deletes the resources allocated by the UE in the target access network, such as the Bearer Context allocated by the UE in the E-UTRAN access network or created for the UE. Binding Cache Entry to retain the IP address resource of the UE;

如果 PDN GW在预注册的程序中已将用户面路径切换到目标用户面网元，则 PDN GW收到上述消息后，将用户面路径切回到源用户面网元，从 PCRF 获取 UE在源接入网络中的 PCC规则，恢复 PDN GW和源接入网络之间的资源。 If the PDN GW has switched the user plane path to the target user plane network element in the pre-registered procedure, after receiving the above message, the PDN GW cuts the user plane path back to the source user plane network element, from the PCRF. Obtaining a PCC rule of the UE in the source access network, and restoring resources between the PDN GW and the source access network.

步骤 1510: PDN GW回 Proxy BA到目标用户面网元； Step 1510: The PDN GW returns the Proxy BA to the target user plane network element.

步骤 1511：目标用户面网元回资源释放响应消息到目标移动性管理网元；步骤 1512: 目标移动性管理网元回切换取消确认（ Handover Cancel Step 1511: The target user plane network element returns a resource release response message to the target mobility management network element. Step 1512: The target mobility management network element returns a handover cancellation confirmation (Handover Cancel)

Acknowledge ) 消息或者去注册确认 ( Deregistration Ack ) 消息到 UE, 或者目标移动性管理网元回 Handover Cancel Acknowledge消息到源接入网元。 The Acknowledge message or the Deregistration Ack message is sent to the UE, or the target mobility management network element returns a Handover Cancel Acknowledge message to the source access NE.

下面介绍方法实施例七，也是描述非 3GPP之间切换取消的方案，在上述实施例六中，是由目标用户面网元通知 PDN GW删除为 UE在目标接入网络分配的资源，而在本实施例中，是釆用源用户面网元（例如 HRPD网络的 PDSN, Wimax网络的 ASN GW, WLAN网络的 EPDG等 )通知 PDN GW删除为 UE在目标接入网络分配的资源。 The method embodiment 7 is described below, and is also a scheme for describing handover cancellation between non-3GPPs. In the foregoing embodiment 6, the target user plane network element notifies the PDN GW to delete the resources allocated by the UE to the target access network. In the embodiment, the source user plane network element (for example, the PDSN of the HRPD network, the ASN GW of the Wimax network, the EPDG of the WLAN network, etc.) is used to notify the PDN GW to delete the resources allocated for the UE in the target access network.

参见图 16, 为方法实施例七流程图 1 , 包括： Referring to FIG. 16, the flow chart 1 of the method embodiment 7 includes:

步骤 1601 : UE或者源接入网元决定取消 UE的切换或者预注册，发送 Handover Cancel消息或者去注册消息到目标移动性管理网元； Step 1601: The UE or the source access NE determines to cancel the handover or pre-registration of the UE, send a Handover Cancel message, or send a registration message to the target mobility management network element.

步骤 1602：目标移动性管理网元通知目标用户面网元删除为 UE在目标接入网络分配的资源；目标接入网络的用户面网元删除为 UE分配的资源； Step 1602: The target mobility management network element notifies the target user plane network element to delete the resource allocated by the UE in the target access network; the user plane network element of the target access network deletes the resource allocated to the UE;

步骤 1603: 源移动性管理网元发送更新路径请求消息到源用户面网元；需要说明的是，本发明实施例不限定这个更新路径请求消息的名称，对于不同的非 3GPP网络来说，这个消息名称可能是不一样的，如，对于 HRPD网络来说，这个消息为 Al 1 Registration Request消息。 Step 1603: The source mobility management network element sends an update path request message to the source user plane network element. It should be noted that the embodiment of the present invention does not limit the name of the update path request message. For different non-3GPP networks, this The message name may be different. For example, for the HRPD network, this message is an Al 1 Registration Request message.

步骤 1604: 源用户面网元发送 Proxy BU消息到 PDN GW; Step 1604: The source user plane network element sends a Proxy BU message to the PDN GW.

步骤 1605: PDN GW将用户面路径切回到源用户面网元，同时 PDN GW将目标接入网络中的资源释放。 Step 1605: The PDN GW cuts the user plane path back to the source user plane network element, and the PDN GW releases the resources in the target access network.

参见图 17, 为方法实施例七详细流程图 2, 其中， Referring to FIG. 17, it is a detailed flowchart 2 of the method embodiment 7, wherein

步骤 1701至步骤 1707同步骤 1501至步骤 1507的处理； Step 1701 to step 1707 are the same as the processing of step 1501 to step 1507;

步骤 1708: 目标用户面网元回资源释放响应消息给目标移动性管理网元。步骤 1709: 如果目标移动性管理网元收到的 Handover Step 1708: The target user plane network element returns a resource release response message to the target mobility management network element. Step 1709: If the target mobility management network element receives the Handover

Cancel/Deregistration消息由 UE发出的，则目标移动性管理网元发送 Handover Cancel Acknowledge/Deregistration Ack消息到 UE The Cancel/Deregistration message is sent by the UE, and the target mobility management network element sends the Handover. Cancel Acknowledge/Deregistration Ack message to UE

步骤 1710: 如果目标移动性管理网元收到的 Handover Cancel消息由源接到源移动性管理网元；如果目标移动性管理网元收到的 Handover Cancel消息由 UE发出的，则目标移动性管理网元发送 Handover Cancel消息到源移动性管理网元； Step 1710: If the Handover Cancel message received by the target mobility management network element is connected to the source mobility management network element by the source; if the Handover Cancel message received by the target mobility management network element is sent by the UE, the target mobility management is performed. The network element sends a Handover Cancel message to the source mobility management network element.

步骤 1711 : 源移动性管理网元收到上述 Handover Cancel Acknowledge或者 Handover Cancel消息后，如果发现上述消息是源接入网络到目标接入网络切换取消或优化切换取消或预注册取消导致的，则源移动性管理网元发送更新路径请求（ Update Path Request )消息到源用户面网元，请求源用户面网元通知 PDN GW将用户面路径切换到源用户面网元，同时通知 PDN GW删除为 UE在目标接入网络中分配的资源。 Step 1711: After the source mobility management network element receives the Handover Cancel Acknowledge or Handover Cancel message, if the message is found to be caused by the source access network to the target access network handover cancellation or the optimization handover cancellation or the pre-registration cancellation, the source is generated. The mobility management network element sends an Update Path Request message to the source user plane network element, and requests the source user plane network element to notify the PDN GW to switch the user plane path to the source user plane network element, and notify the PDN GW to delete the UE. Resources allocated in the target access network.

源移动性管理网元在更新路径请求消息中增加指示位信息，以通知源用户面网元这个更新路径请求消息是由于" Handover Cancel"或者' Optimized Handover Cancel" 或者" Pre-registration Cancel"导致。 The source mobility management network element adds indicator bit information in the update path request message to notify the source user plane network element that the update path request message is caused by "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration Cancel".

a) 源接入网络的移动性管理网元在更新路径请求消息中增加 a) The mobility management network element of the source access network is added in the update path request message

"Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者 "Pre-registration Cancel Indication"; "Handover Cancel Indication" or 'Optimized Handover Cancel Indication' or "Pre-registration Cancel Indication";

b) 源接入网络的移动性管理网元在更新路径请求消息中增加 b) the mobility management network element of the source access network is added in the update path request message

"Registration Type"信元，源接入网络的移动性管理网元将该信元设置为 "Handover Cancel" 或' Optimized Handover Cancel"或" Pre-registration Cancel"; c) 源接入网络的移动性管理网元在更新路径请求消息中增加" Cause" 信元，源接入网络的移动性管理网元将该信元设置为 "Handover Cancel" 或者 "Optimized Handover Cancel"或者" Pre-registration Cancel"„ "Registration Type" cell, the mobility management network element of the source access network sets the cell to "Handover Cancel" or 'Optimized Handover Cancel' or "Pre-registration Cancel"; c) Mobility of the source access network The management network element adds a " Cause" cell to the update path request message, and the mobility management network element of the source access network sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration Cancel".

需要说明的是，本发明实施例不限定包含指示位信息的消息名称，对于不同的非 3GPP网络来说，这个消息名称可能是不一样的，如，对于 HRPD网络来说，这个消息为 Al 1 Registration Request消息。 It should be noted that the embodiment of the present invention does not limit the message name including the indication bit information. For different non-3GPP networks, the message name may be different. For example, for the HRPD network, the message is Al 1 . Registration Request message.

步骤 1712: 源用户面网元收到上述更新路径请求消息后，发送 Proxy BU 消息到 PDN GW, PDN GW释放目标网络资源，恢复源网络资源；源用户面网元在 Proxy BU消息中增加指示位信息 , 以通知 PDN GW这个 Proxy BU消息是由于' 'Handover Cancel"或者' Optimized Handover Cancel"或者" Pre-registration Cancel"导致的且将 Proxy BU消息中的 Lifetime信元设置为非 0的一个数值，这样， PDN GW就会将用户面路径切换到源用户面网元且释放为 UE在目标接入网络中分配的资源。 Step 1712: After receiving the above update path request message, the source user plane network element sends a Proxy BU. The message is sent to the PDN GW, and the PDN GW releases the target network resource to restore the source network resource. The source user plane network element adds the indicator bit information to the Proxy BU message to notify the PDN GW that the Proxy BU message is due to ''HandoverCancel' or ' Optimized The Handover Cancel" or "Pre-registration Cancel" causes the Lifetime cell in the Proxy BU message to be set to a value other than 0. Thus, the PDN GW switches the user plane path to the source user plane network element and releases it as The resources allocated by the UE in the target access network.

a) 源接入网络的用户面网元在 Proxy BU消息中增加 "Handover Cancel Indication" 或者' Optimized Handover Cancel Indication"或者" Pre-registration Cancel Indication"; a) The user plane network element of the source access network adds "Handover Cancel Indication" or "Optimized Handover Cancel Indication" or "Pre-registration Cancel Indication" to the Proxy BU message;

b) 源接入网络的用户面网元在 Proxy BU消息中增加" Registration Type"信元，源接入网络的用户面网元将该信元设置为 "Handover Cancel" 或 "Optimized Handover Cancel"或" Pre-registration Cancel"; b) The user plane network element of the source access network adds a "Registration Type" cell to the Proxy BU message, and the user plane network element of the source access network sets the cell to "Handover Cancel" or "Optimized Handover Cancel" or "Pre-registration Cancel";

c) 源接入网络的用户面网元在 Proxy BU消息中增加" Cause"信元，源接入网络的用户面网元将该信元设置为 "Handover Cancel" 或者' Optimized c) The user plane network element of the source access network adds a " Cause" cell to the Proxy BU message, and the user plane network element of the source access network sets the cell to "Handover Cancel" or ' Optimized

Handover Cancel"或者" Pre-registration Cancel"„ Handover Cancel" or "Pre-registration Cancel"

PDN GW操作具体为， PDN GW收到上述消息后，将用户面路径切回到源用户面网元，同时 PDN GW将目标接入网络侧的资源释放掉 (如 PDN GW为 UE在目标接入网络内创建的绑定緩存表项（ Binding Cache Entry ) ) , 保留 UE 的 IP地址资源；并且， PDN GW收到上述消息后，联系 PCRF获取 UE在源接入网络中的 PCC规则，恢复 PDN GW和源接入网络之间的资源。 The operation of the PDN GW is specifically: after receiving the foregoing message, the PDN GW cuts the user plane path back to the source user plane network element, and the PDN GW releases the resources of the target access network side (for example, the PDN GW is the target access of the UE). The Binding Cache Entry created in the network retains the IP address resource of the UE. After receiving the above message, the PDN GW contacts the PCRF to obtain the PCC rule of the UE in the source access network, and restores the PDN GW. Resources between the source and the source.

步骤 1713 : 源用户面网元回更新路径响应消息到源移动性管理网元；步骤 1714:如果源移动性管理网元在第步骤 1710步中收到目标移动性管理网元发送的 Handover Cancel消息，则源移动性管理网元回 Handover Cancel Acknowledge消息到目标移动性管理网元。 Step 1713: The source user plane network element updates the path response message to the source mobility management network element. Step 1714: If the source mobility management network element receives the Handover Cancel message sent by the target mobility management network element in step 1710. Then, the source mobility management network element returns a Handover Cancel Acknowledge message to the target mobility management network element.

与上述方法相对应，本发明实施例还提供一种取消网络切换的移动性管理网元，该移动性管理网元包括切换取消获知单元和承载删除告知单元，其中，切换取消获知单元主要用于从源接入网元或 UE接收切换取消通知消息，承载删除告知单元主要用于当所述切换取消消息获知单元接收到所述切换取消消息后，通知目标用户面网元删除为 UE分配的资源。优先地，该移动性管理网元还包括指示位告知单元，用于告知所述目标用户面网元所述通知是由于切换取消或者优化切换取消或者预注册取消导致的。优选地，该移动性管理网元还包括用户面锚点删除通知单元，用于向源用户面网元发送删除用户面锚点目标网络资源的通知。其中，所述移动性管理网元包括 SGSN、 MME或 HRPD AN, 所述用户面网元包括 Serving GW或 PDSN。 Corresponding to the foregoing method, the embodiment of the present invention further provides a mobility management network element that cancels a network handover, where the mobility management network element includes a handover cancellation learning unit and a bearer deletion notification unit, where the handover cancellation learning unit is mainly used for And receiving, by the source access network element or the UE, a handover cancellation notification message, where the bearer deletion notification unit is configured to: when the handover cancellation message learning unit receives the handover cancellation cancellation After the message is received, the target user plane network element is notified to delete the resource allocated for the UE. Preferably, the mobility management network element further includes an indication bit notification unit, configured to notify the target user plane network element that the notification is caused by a handover cancellation or an optimized handover cancellation or a pre-registration cancellation. Preferably, the mobility management network element further includes a user plane anchor deletion notification unit, configured to send, to the source user plane network element, a notification for deleting the user plane anchor target network resource. The mobility management network element includes an SGSN, an MME, or an HRPD AN, and the user plane network element includes a Serving GW or a PDSN.

此外，本发明实施例还提供一种取消网络切换的用户面网元，该用户面网元包括承载删除获知单元和承载删除执行单元，其中，承载删除获知单元主要用于从目标移动性管理网元接收资源释放命令 (如删除承载请求， All注册请求等消息）；承载删除执行单元主要在所述承载删除获知单元接收到所述资源释放命令后，用于删除为 UE分配的目标网络资源。优选地，上述目标用户面网元还包括承载删除告知单元，该承载删除告知单元主要用于通知 PDN GW 删除为 UE在目标接入网络中分配的资源。优先地，上述用户面网元还包括指示位告知单元，用于告知所述用户面锚点网元所述通知是由于切换取消或者优化切换取消或者预注册取消导致的。优选地，该用户面网元还包括用户面锚点删除获知单元，用于从源目标移动性管理网元接收删除用户面锚点目标网络资源的通知。其中，所述移动性管理网元包括 SGSN、 MME或 HRPD AN, 所述用户面网元包括 Serving GW或 PDSN。 In addition, the embodiment of the present invention further provides a user plane network element that cancels network switching, where the user plane network element includes a bearer deletion learning unit and a bearer deletion execution unit, where the bearer deletion learning unit is mainly used for the target mobility management network. The UE receives the resource release command (such as deleting the bearer request, the All registration request, and the like). The bearer deletion execution unit is configured to delete the target network resource allocated for the UE after the bearer deletion and learning unit receives the resource release command. Preferably, the target user plane network element further includes a bearer deletion notification unit, and the bearer deletion notification unit is mainly used to notify the PDN GW to delete resources allocated for the UE in the target access network. Preferably, the user plane network element further includes an indication bit notification unit, configured to notify the user that the anchor point network element is caused by the handover cancellation or the optimization handover cancellation or the pre-registration cancellation. Preferably, the user plane network element further includes a user plane anchor deletion learning unit, configured to receive, from the source target mobility management network element, a notification for deleting the user plane anchor target network resource. The mobility management network element includes an SGSN, an MME, or an HRPD AN, and the user plane network element includes a Serving GW or a PDSN.

此外，本发明实施例还提供一种取消网络切换的 UE, 该 UE包括切换取消判断单元和切换取消告知单元，其中，切换取消判断单元主要用于判断是否需要进行切换取消；切换取消告知单元主要在所述切换取消判断单元确定需要进行切换取消时，用于向目标移动性管理网元发送切换取消通知消息。优选地，上述 UE还包括指示位告知单元，用于告知所述目标移动性管理网元所述切换取消通知消息是由于切换取消或者优化切换取消或者预注册取消导致的。 In addition, the embodiment of the present invention further provides a UE that cancels a network handover, where the UE includes a handover cancellation determination unit and a handover cancellation notification unit, where the handover cancellation determination unit is mainly used to determine whether handover cancellation is required; And when the handover cancellation determining unit determines that the handover cancellation is required, the method is used to send a handover cancellation notification message to the target mobility management network element. Preferably, the UE further includes an indication bit notification unit, configured to notify the target mobility management network element that the handover cancellation notification message is caused by a handover cancellation or an optimized handover cancellation or a pre-registration cancellation.

此外，本发明实施例还提供一种用户面锚点网元，该用户面锚点网元包括承载删除获知单元，用于从用户面网元接收删除承载请求或者代理绑定更新消息；承载删除执行单元，在所述承载删除获知单元接收到所述删除承载请求或者代理绑定更新消息后，用于删除为用户设备分配的目标网络资源。优选地，该用户面锚点网元还包括，指示位获知单元，用于获知所述删除承载请求或者代理绑定更新消息是由于切换取消、优化切换取消或预注册取消导致的。 In addition, the embodiment of the present invention further provides a user plane anchor network element, where the user plane anchor network element includes a bearer deletion learning unit, configured to receive a delete bearer request or a proxy binding update message from the user plane network element; The execution unit is configured to delete the target network resource allocated for the user equipment after the bearer deletion learning unit receives the delete bearer request or the proxy binding update message. Preferably, The user plane anchor network element further includes: an indicator bit obtaining unit, configured to learn that the delete bearer request or the proxy binding update message is caused by a handover cancellation, an optimized handover cancellation, or a pre-registration cancellation.

而且，本发明实施例还提供一种取消网络切换的***，该***至少包括 UE、源接入网元、目标移动性管理网元和目标用户面网元，其中，所述 UE 或源接入网元，判断是否需要进行切换取消，若是，向目标移动性管理网元发送切换取消消息；所述目标移动性管理网元，在接收到所述切换取消消息后，用于通知目标用户面网元删除为 UE分配的资源；所述目标用户面网元，用于删除为所述 UE分配的资源。优选地 , 该***还包括 PDN GW; 所述 PDN GW 用于接收所述目标用户面网元发送的删除承载请求或者代理绑定更新，并用于根据所述删除承载请求或者代理绑定更新删除为所述 UE分配的资源；或者，所述 PDN GW用于接收源用户面网元根据所述源接入网元指示发送的代理绑定更新消息，并用于根据所述代理绑定更新消息删除为所述 UE分配的资源。进一步，所述 PDN GW判断是否已将所述 UE的用户面路径切换到目标网络，若是，所述 PDN GW进一步用于将用户面路径从目标网络切回到源网络。所述源网络为 3GPP网络时，所述源接入网元包括 BSS、 RNC或 eNodeB, 源用户面网元包括 Serving GW; 所述源网络为非 3GPP网络时，所述源接入网元包括 HRPD AN, 所述源用户面网元包括 PDSN; 所述目标网络为 3GPP网络时，所述目标移动性管理网元包括 SGSN或 MME, 所述目标用户面网元包括 Serving GW; 所述目标网络为非 3GPP网络时，所述目标移动性管理网元包括 HRPD AN, 所述目标用户面网元包括 PDSN。 Moreover, the embodiment of the present invention further provides a system for canceling network handover, where the system includes at least a UE, a source access network element, a target mobility management network element, and a target user plane network element, where the UE or source access The network element determines whether the handover cancellation is required, and if yes, sends a handover cancellation message to the target mobility management network element; the target mobility management network element, after receiving the handover cancellation message, is used to notify the target user network The meta-delete resource allocated to the UE; the target user plane network element, configured to delete the resource allocated for the UE. Preferably, the system further includes a PDN GW, where the PDN GW is configured to receive a delete bearer request or a proxy binding update sent by the target user plane network element, and is configured to delete according to the delete bearer request or the proxy binding update. The PDN GW is configured to receive a proxy binding update message sent by the source user plane network element according to the source access NE indication, and is configured to delete according to the proxy binding update message The resources allocated by the UE. Further, the PDN GW determines whether the user plane path of the UE has been switched to the target network, and if yes, the PDN GW is further configured to cut the user plane path from the target network back to the source network. When the source network is a 3GPP network, the source access network element includes a BSS, an RNC, or an eNodeB, and the source user plane network element includes a Serving GW. When the source network is a non-3GPP network, the source access network element includes HRPD AN, the source user plane network element includes a PDSN; when the target network is a 3GPP network, the target mobility management network element includes an SGSN or an MME, and the target user plane network element includes a Serving GW; In the case of a non-3GPP network, the target mobility management network element includes an HRPD AN, and the target user plane network element includes a PDSN.

对于本发明实施例提供的目标移动性管理网元、目标用户面网元、 UE以及***的具体实现细节可参见上述方法实施例，在此不再赘述。 For specific implementation details of the target mobility management network element, the target user plane network element, the UE, and the system provided by the embodiment of the present invention, refer to the foregoing method embodiments, and details are not described herein again.

以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。 The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

权利要求 Rights request

1、一种取消网络切换的处理方法，其特征在于，包括： A method for canceling network switching, which is characterized by comprising:

目标用户面网元在接收到目标移动性管理网元发送的删除资源通知后，删除为用户设备分配的资源； After receiving the deletion resource notification sent by the target mobility management network element, the target user plane network element deletes the resource allocated for the user equipment.

其中，所述删除资源通知是在目标移动性管理网元接收到源接入网元或用户设备发起的切换取消通知消息后向所述目标用户面网元发送的。 The deletion resource notification is sent to the target user plane network element after the target mobility management network element receives the handover cancellation notification message initiated by the source access network element or the user equipment.

2、根据权利要求 1所述方法，其特征在于，还包括： 2. The method according to claim 1, further comprising:

所述目标用户面网元向用户面锚点网元发送删除承载请求或者代理绑定更新消息； The target user plane network element sends a delete bearer request or a proxy binding update message to the user plane anchor network element;

所述用户面锚点网元删除为所述用户设备分配的资源。 The user plane anchor network element deletes resources allocated for the user equipment.

3、根据权利要求 1所述方法，其特征在于，所述用户设备在所述切换取消通知消息中携带指示位信息，通知所述目标移动性管理网元所述切换取消通知消息是由于切换取消、优化切换取消或预注册取消导致的。 The method according to claim 1, wherein the user equipment carries the indication bit information in the handover cancellation notification message, and notifies the target mobility management network element that the handover cancellation notification message is due to handover cancellation. , Optimized for switch cancellation or pre-registration cancellation.

4、根据权利要求 1所述方法，其特征在于，所述目标移动性管理网元在所述切换取消通知消息中携带指示位信息，通知所述目标用户面网元所述通知消息是由于切换取消、优化切换取消或预注册取消导致的。 The method according to claim 1, wherein the target mobility management network element carries indication bit information in the handover cancellation notification message, and notifies the target user plane network element that the notification message is due to handover. Cancel, optimize the switch cancellation or pre-registration cancellation.

5、根据权利要求 2所述方法，其特征在于，所述目标用户面网元在所述删除承载请求或代理绑定更新消息中携带指示位信息，通知所述用户面锚点网元所述消息是由于切换取消、优化切换取消或预注册取消导致的。 The method according to claim 2, wherein the target user plane network element carries indication bit information in the deletion bearer request or the proxy binding update message, and notifies the user plane anchor network element The message is caused by a switch cancellation, an optimized switch cancellation, or a pre-registration cancellation.

6、根据权利要求 1所述方法，其特征在于，还包括： 6. The method according to claim 1, further comprising:

源移动性管理网元通知源用户面网元更新用户面锚点网元的用户面路径；接收到所述通知后，所述源用户面网元向所述用户面锚点发送代理绑定更新消息或者更新承载请求消息； The source mobility management network element notifies the source user plane network element to update the user plane path of the user plane anchor network element; after receiving the notification, the source user plane network element sends a proxy binding update to the user plane anchor point. Message or update bearer request message;

接收到所述代理绑定更新消息或更新承载请求消息后，所述用户面锚点网元删除为所述用户设备分配的资源。 After receiving the proxy binding update message or the update bearer request message, the user plane anchor network element deletes the resource allocated for the user equipment.

7、根据权利要求 2或 6所述方法，其特征在于，还包括： The method according to claim 2 or 6, further comprising:

判断是否已将用户面路径切换到目标网络，若是，所述用户面锚点网元将用户面路径从目标网络切回到源网络。 Determining whether the user plane path has been switched to the target network, and if so, the user plane anchor network element cuts the user plane path from the target network back to the source network.

8、根据权利要求 6所述方法，其特征在于，所述源移动性管理网元在所述通知消息中携带指示位信息，通知所述源用户面网元所述通知消息是由于切换取消、优化切换取消或预注册取消导致的。 The method according to claim 6, wherein the source mobility management network element carries the indication bit information in the notification message, and notifies the source user plane network element that the notification message is due to handover cancellation, Optimized by switch cancellation or pre-registration cancellation.

9、根据权利要求 6所述方法，其特征在于，所述源用户面网元在所述代理绑定更新消息或更新承载请求消息中携带指示位信息，通知所述用户面锚点网元所述代理绑定更新消息或更新承载请求消息是由于切换取消、优化切换取消或预注册取消导致的。 The method according to claim 6, wherein the source user plane network element carries indication bit information in the proxy binding update message or the update bearer request message, and notifies the user plane anchor network element The proxy binding update message or the update bearer request message is caused by handover cancellation, optimized handover cancellation, or pre-registration cancellation.

10、一种取消网络切换的移动性管理网元，其特征在于，包括：切换取消获知单元，用于从源接入网元或用户设备接收切换取消通知消息； A mobility management network element for canceling network switching, comprising: a handover cancellation learning unit, configured to receive a handover cancellation notification message from a source access network element or a user equipment;

承载删除告知单元，当所述切换取消消息获知单元接收到所述切换取消消息后，用于通知目标用户面网元删除为用户设备分配的资源。 The bearer deletion notification unit is configured to notify the target user plane network element to delete the resource allocated for the user equipment after the handover cancellation message learning unit receives the handover cancellation message.

11、根据权利要求 10所述网元，其特征在于，还包括： The network element according to claim 10, further comprising:

用户面锚点删除通知单元，用于向源用户面网元发送删除用户面锚点目标网络资源的通知。 The user plane anchor deletion notification unit is configured to send a notification to the source user plane network element to delete the user plane anchor target network resource.

12、根据权利要求 10或 11所述网元，其特征在于，还包括 The network element according to claim 10 or 11, further comprising

指示位告知单元，用于告知所述用户面网元所述通知是由于切换取消或者优化切换取消或者预注册取消导致的。 The indication bit notification unit is configured to notify the user plane network element that the notification is caused by a handover cancellation or an optimization handover cancellation or a pre-registration cancellation.

13、一种取消网络切换的用户面网元，其特征在于，包括： 13. A user plane network element for canceling network switching, which is characterized by:

承载删除获知单元，用于从目标移动性管理网元接收资源释放的通知消息； a bearer deletion learning unit, configured to receive a notification message of resource release from the target mobility management network element;

承载删除执行单元，在所述承载删除获知单元接收到所述资源释放的通知消息后，用于删除为用户设备分配的目标网络资源。 The bearer deletion execution unit is configured to delete the target network resource allocated for the user equipment after the bearer deletion learning unit receives the notification message of the resource release.

14、根据权利要求 13所述网元，其特征在于，还包括 14. The network element according to claim 13, further comprising

承载删除告知单元，用于通知用户面锚点网元删除为用户设备在目标接入网络分配的资源。 The bearer deletion notification unit is configured to notify the user that the anchor point network element deletes the resource allocated by the user equipment in the target access network.

15、根据权利要求 13所述网元，其特征在于，还包括： The network element according to claim 13, further comprising:

用户面锚点删除获知单元，用于从源目标移动性管理网元接收删除用户面锚点目标网络资源的通知。 The user plane anchor deletion obtaining unit is configured to receive, from the source target mobility management network element, a notification for deleting the user plane anchor target network resource.

16、根据权利要求 13或 14所述网元，其特征在于，还包括 The network element according to claim 13 or 14, further comprising

指示位告知单元，用于告知所述用户面锚点网元所述通知消息是由于切换取消或者优化切换取消或者预注册取消导致的。 The indication bit notification unit is configured to notify the user that the notification message of the surface anchor network element is caused by a handover cancellation or an optimization handover cancellation or a pre-registration cancellation.

17、一种取消网络切换的用户设备，其特征在于，包括： 17. A user equipment for canceling network switching, comprising:

切换取消判断单元，用于判断是否需要进行切换取消； Switching cancellation determination unit, configured to determine whether a handover cancellation is required;

切换取消告知单元，在所述切换取消判断单元确定需要进行切换取消时，用于向目标移动性管理网元发送切换取消通知消息。 The handover cancellation notification unit is configured to send a handover cancellation notification message to the target mobility management network element when the handover cancellation determination unit determines that handover cancellation is required.

18、根据权利要求 17所述用户设备，其特征在于，还包括： The user equipment according to claim 17, further comprising:

指示位告知单元，用于告知所述目标移动性管理网元所述切换取消通知消息是由于切换取消、优化切换取消或预注册取消导致的。 The indication bit notification unit is configured to notify the target mobility management network element that the handover cancellation notification message is caused by a handover cancellation, an optimized handover cancellation, or a pre-registration cancellation.

19、一种用户面锚点网元，其特征在于，包括： 19. A user plane anchor network element, comprising:

承载删除获知单元，用于从用户面网元接收删除承载请求或者代理绑定更新消息； a bearer deletion learning unit, configured to receive a delete bearer request or a proxy binding update message from the user plane network element;

承载删除执行单元，在所述承载删除获知单元接收到所述删除承载请求或者代理绑定更新消息后，用于删除为用户设备分配的目标网络资源。 The bearer deletion execution unit is configured to delete the target network resource allocated for the user equipment after the bearer deletion learning unit receives the delete bearer request or the proxy binding update message.

20、根据权利要求 19所述网元，其特征在于，还包括： The network element according to claim 19, further comprising:

指示位获知单元，用于获知所述删除承载请求或者代理绑定更新消息是由于切换取消、优化切换取消或预注册取消导致的。 The indicator bit obtaining unit is configured to learn that the delete bearer request or the proxy binding update message is caused by a handover cancellation, an optimized handover cancellation, or a pre-registration cancellation.

21、一种取消网络切换的***，包括目标移动性管理网元和目标用户面网元，其特征在于， 21. A system for canceling network switching, comprising a target mobility management network element and a target user plane network element, wherein:

所述目标移动性管理网元，在接收到切换取消通知消息后，用于通知目标用户面网元删除为用户设备分配的资源； After receiving the handover cancellation notification message, the target mobility management network element is configured to notify the target user plane network element to delete the resource allocated for the user equipment.

所述目标用户面网元，在接收到所述通知后，用于删除为所述用户设备分配的资源。 The target user plane network element is configured to delete resources allocated for the user equipment after receiving the notification.

22、根据权利要求 21所述***，其特征在于，还包括用户面锚点网元；所述用户面锚点网元用于接收所述目标用户面网元发送的删除承载请求或者代理绑定更新消息，并用于根据所述删除承载请求或者代理绑定更新消息删除为所述用户设备分配的目标网络资源； The system according to claim 21, further comprising a user plane anchor network element; the user plane anchor network element is configured to receive a delete bearer request or a proxy binding sent by the target user plane network element Updating the message, and deleting the target network resource allocated for the user equipment according to the delete bearer request or the proxy binding update message;

或者，所述用户面锚点网元用于接收源用户面网元根据源移动性管理网元指示发送的代理绑定更新消息或者更新承载请求消息，并用于根据所述代理绑定更新消息或者更新承载请求消息删除为所述用户设备分配的目标网络资源。 or, The user plane anchor network element is configured to receive a proxy binding update message or an update bearer request message sent by the source user plane network element according to the source mobility management network element indication, and is used to bind an update message or update the bearer according to the proxy. The request message deletes the target network resource allocated for the user equipment.

23、根据权利要求 22所述***，其特征在于，所述用户面锚点网元判断是否已将所述用户设备的用户面路径切换到目标网络，若是，所述用户面锚点网元用于将用户面路径从目标网络切回到源网络。 The system according to claim 22, wherein the user plane anchor network element determines whether the user plane path of the user equipment has been switched to the target network, and if so, the user plane anchor network element Cut the user plane path from the target network back to the source network.