CN100428717C - Method for keeping service session continuity - Google Patents

Method for keeping service session continuity Download PDF

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CN100428717C
CN100428717C CN 200510108057 CN200510108057A CN100428717C CN 100428717 C CN100428717 C CN 100428717C CN 200510108057 CN200510108057 CN 200510108057 CN 200510108057 A CN200510108057 A CN 200510108057A CN 100428717 C CN100428717 C CN 100428717C
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gateway
service
ue
access
network
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CN1941725A (en )
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武亚娟
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华为技术有限公司
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Abstract

本发明公开了一种保持业务会话连续性的方法,用户设备(UE)通过自身所在分组交换网的服务区的接入网关接入业务承载网,并与该业务承载网建立业务会话;当UE所在分组交换网的服务区发生变化时,该方法包括:A1、UE与当前所在服务区的网关建立连接,该网关为UE当前的服务网关;B1、所述接入网关将UE当前的服务网关置为自身的下一跳;UE依次通过该服务网关和该接入网关接入业务承载网继续该业务会话。 The present invention discloses a method of maintaining session continuity service, the user equipment (UE) where the packet switched access through its own gateway access service bearer service area of ​​the network, and establish a service session with the service bearer network; when a UE when the packet-switched network where the service area is changed, the method comprising: A1, UE establish a service area where the old gateway connected to a gateway of the UE is currently serving gateway; Bl, the access gateway to the UE is currently serving gateway set itself as the next hop; access service network bearer service session the UE continues sequentially through the service gateway and the access gateway. 本发明还公开了另两种保持业务会话连续性的方法,应用本发明方法能使UE在基于不同分组交换网络的服务区之间切换时仍能保证业务会话的连续性。 The present invention also discloses a method of holding two other service session continuity, application of the method according to the present invention can still ensure the continuity of service session when the UE switches between the service areas based on different packet switched network.

Description

保持业务会话连续性的方法 Maintaining session continuity of business methods

技术领域 FIELD

本发明涉及业务承载网接入技术,特别涉及用户设备(UE)在分组交换网的多个服务区之间移动时,保持UE与业务承载网之间业务会话连续性的方法。 The present invention relates to a service bearer network access technologies, and particularly relates to a user equipment (UE) moves between a plurality of packet-switched network service areas, the method for maintaining session continuity service between the UE and the service bearer network.

背景技术 Background technique

目前,多种应用业务已得到了广泛应用,UE在使用应用业务时要通过自身所在分组交换网络的接入网关接入业务承载网。 Currently, a variety of application services have been widely used, the UE during an application service access gateway for a packet switched network access service bearer network by itself belongs. 其中,3GPP以及3GPP2 等标准组织都先后推出了网际协议多媒体子系统(IMS)等业务承载网络, 目的是在移动网络中使用一种标准化开放结构来实现多种多样的多媒体业务应用。 Wherein, 3GPP and 3GPP2 standards organizations have introduced Internet Protocol Multimedia Subsystem (IMS) and other bearer services network, the purpose of using a standardized open structure in mobile networks to implement a wide range of multimedia services application. UE通常接入IMS网络、基于会话初始协议(SIP)建立IP多媒体业务会话。 UE typically connect to the IMS session establish an IP-based multimedia services Session Initiation Protocol (SIP). 这里,所谓分组交换网络是指:以因特网协议(IP)协议或基于IP协议开发的其他协议为业务承载协议的网络,比如使用基于IP/用户数据报协议(UDP)的通用分组无线业务隧道协议(GTP)的通用分组无线业务(GPRS)网络,当前主流的分组交换网络包括以下几类:GPRS网络、无线局域网(WLAN)网络、全球微波接入互操作性技术(WiMAX)网络等等。 Here, the packet switching network refers to: an Internet protocol (IP) protocol, or based on other protocols IP protocol developed for network traffic bearer protocol, such as using a general packet radio service tunneling protocol based on IP / User Datagram Protocol (UDP) of (GTP) General packet radio service (GPRS) network, the current mainstream packet-switched network includes the following categories: GPRS network, a wireless local area network (WLAN) network, global interoperability for microwave access technologies (WiMAX) network, and so on.

但是,在UE与业务承载网之间业务会话的进行过程中,UE可能移动于一个或多个分组交换网内的若干服务区之间。 However, the network bearer service between the UE and the service session progresses, UE may move between a plurality of service areas within one or more of packet switched network. 当UE从原来所在的服务区移动到另一服务区时,当前业务会话就不得不中断。 When the UE moves from the service area where the original service area to another, the current service session had to be interrupted. UE如果要继续使用业务,只能释放当前业务会话,再通过当前所在的服务区的网关接入业务承载网来重新建立业务会话。 UE If you want to continue using the service, can only release the current service session, and then re-established service session through the gateway access service bearer network service area is currently located to. 这里,同一应用业务可承载于一种或多种分组交换网络之上,也就是说:UE当前所在分组交换网与原来所在的分组交换网可能为相同类型或不同类型的网络。 Here, the same application traffic may be carried over one or more packet-switched network, that is to say: UE is currently located packet-switched network and packet-switched network where the original may be the same type or different types of networks.

随着数据业务的发展,各种数据业务的覆盖区域将日益扩大,随之而来 With the development of data services, data services covering various areas will be growing, followed by

的问题就是:在同一业务会话中,越来越多的UE可能会在多个服务区之间切换,如果每次UE进入一个新的服务区时都要中断原有会话、建立新的会话,这将严重影响应用业务质量,并且业务会话的重新建立也要占用大量的系统处理资源,从而影响其它业务会话的正常运行。 The question is: in the same business session, a growing number of UE may switch between multiple service areas, we must break the existing UE session every time you enter a new area of ​​service, establish a new session, this will seriously affect the application quality of service, and to re-establish service session should also take up a lot of system processing resources, thus affecting the normal operation of other business session. 因此,如何使UE通过多个服务区接入业务承栽网时,仍能保持业务会话连续性,已成为当前业务承载网接入技术中亟待解决的问题。 Therefore, how to make the UE access of business to grow through multiple network service area, the business can maintain session continuity, has become the current service bearer network access technology to be solved.

发明内容 SUMMARY

有鉴于此,本发明的主要目的在于提供三种保持业务会话连续性的方法, 当UE在不同服务区之间切换时,能保证UE当前业务会话不中断。 In view of this, the main object of the present invention to provide a method of holding three kinds of service session continuity, when the UE switches between different service areas, to ensure uninterrupted service session of the current UE.

为达到上述目的,本发明的技术方案是这样实现的: To achieve the above object, the technical solution of the present invention is implemented as follows:

本发明7>开了一种保持业务会话连续性的方法,UE通过自身所在的分组交换网的接入网关接入业务承载网,并与该业务承载网建立业务会话;当UE所在的服务区发生变化时,该方法包括: The present invention 7> On a business method of maintaining session continuity, UE through the access gateway itself access to a packet switched network where the service bearer network, and establish a service session with the service bearer network; the service area when the UE is located when a change occurs, the method comprising:

A3、UE与当前所在服务区的网关建立连接,该网关为UE当前的服务网关; A3, UE establishes a connection with the current gateway where the service area, the gateway to the UE is currently serving gateway;

B3、判断当前业务是否为实时业务,如果是实时业务,则所述接入网关将所述服务网关置为自身的下一跳,UE通过该服务网关和该接入网关接入业务承载网继续当前业务会话;否则将所述服务网关置为UE的接入网关,UE通过该服务网关接入业务承载网继续当前业务会话。 B3, determines whether the current service is a real-time service, if a real-time service, the access gateway to the serving gateway is set to its next hop, the UE by the serving gateway and the access gateway access network bearer service to continue current service session; otherwise, set the serving gateway is an access gateway of the UE, UE continues the current session service access service gateway by the service bearer network.

步骤B3中,在所述UE通过月良务网关和4妄入网关接入业务?lc载网继续当前业务会话之后,进一步包括步骤C3:当业务会话结束时,将所述服务网关置为UE的接入网关,UE通过该服务网关接入业务承载网。 ? Step B3, the UE good service gateway through May 4 and jump into the contained network gateway access business lc continue after the current service session, further comprising the step of C3: When the service session, the service gateway is set to UE access gateway, UE by the serving gateway access service bearer network.

步骤B3中,所述将服务网关置为下一跳的方法为:所述接入网关获取所述服务网关的网关信息,与该服务网关建立连接,按该服务网关的网关信息修改当前业务路由,将该服务网关置为自身的下一跳,再将自身与UE之间的连接释放。 In Step B3, the service gateway is set as the next hop for the method of: acquiring the gateway information of the access gateway serving gateway establishes a connection to the service gateway, to modify the current traffic routing information according to the service gateway Gateway , the service gateway is set, then the connection between itself and the UE releases itself as the next hop.

其中,所述接入网关获取服务网关的网关信息的方法为:所述接入网关从UE获取所述服务网关的网关信息;或者,所述服务网关从UE获取所述接入网关的网关信息,按此接入网关的网关信息发送自身的网关信息给该接入网关。 The method wherein the access information acquisition gateway serving gateway to gateway: the access gateway information acquired from the gateway to the serving gateway UE; or a serving gateway access gateway obtains the gateway information from the UE , gateway information Click access gateway sends its information to the gateway access gateway.

步骤B3中,所述判断业务类型的方法为:根据当前业务的服务质量要求QoS或者用户的感受质量要求QoE进行判断,或根据当前业务的类型进行判断。 Step B3, the service type determination method: according to the current requirement of the service quality perceived quality or QoS requirements of the user QoE judgment, or judgment based on the current type of traffic.

步骤B3中,所述将服务网关置为UE的接入网关的方法为:所述接入网关获取所述服务网关的网关信息,该接入网关按该服务网关的网关信息发送UE 的用户信息给该服务网关,该接入网关再与该UE断开连接,由该服务网关作为UE当前的接入网关。 In Step B3, the method is set to the serving gateway of the UE to the access gateway: acquiring the gateway information of the access gateway serving gateway, the access gateway sends the user information of the UE according to the service gateway information gateway to the service gateway, which then disconnected from the access gateway to the UE, UE by the service gateway as the current access gateway.

步骤C3中,所述将服务网关置为UE的接入网关的方法为:所述接入网关发送UE的用户信息给该服务网关,该接入网关再与该服务网关断开连接,由该服务网关作为UE当前的接入网关。 In step C3, the method is set to the serving gateway of the access gateway for the UE: user information of the UE sending the access gateway to the serving gateway, the access gateway before disconnecting the gateway to the service from the UE currently serving as the gateway access gateway.

其中,UE当前所在的分组交换网与UE原来所在的分组交换网为相同或不同类型的分组交换网;当UE当前所在的分组交换网与UE原来所在的分组交换网为同类型分组交换网时,所述服务网关与接入网关按该类型分组交换网的业务承载协议进行通信;当UE当前所在的分组交换网与UE原来所在的分组交换网为不同类型分组交换网时,所述服务网关与接入网关按因特网协议进行通信。 Wherein the packet-switched network the UE is currently located in the packet-switched network and the UE where the original is the same or different types of packet-switched network; when the packet-switched network the UE is currently located in the packet-switched network and the UE where the original when the same type of packet switched network the service gateway to communicate with the access gateway bearer service according to the protocol of the packet-switched network type; a packet-switched network when the UE is currently located and the packet-switched network where the UE originally for different types of packet switched networks, the serving gateway according to the access gateway to communicate with the Internet protocol.

其中,所述UE所在的分组交换网为:GPRS网络、或WLAN网络、或WiMAX网络。 Wherein the packet switched network to the UE is located: GPRS network, or a WLAN network, or a WiMAX network.

其中,所述业务承载网为IMS网络。 Wherein the service bearer network to the IMS network.

由上述方案可以看出,本发明的关键在于:当UE移动到新的服务区时, UE的接入网关将该服务区的网关置为自身下一跳、或者将该服务区的网关置为UE最新的接入网关;进而,UE可通过该服务区的网关和接入网关接入业务承载网,或者直接通过该服务区的网关接入业务承载网。 As can be seen from the above embodiment, the present invention is that the key: When the UE moves to a new service area, the UE in the access gateway a gateway service area opposed to the gateway next hop to itself, or to the service area the latest UE access gateway; Furthermore, UE can access the service bearer network through the gateway and the access gateway of the service area, or by directly accessing the service area of ​​a gateway service bearer network.

因此,本发明所提供的保持业务会话连续性的方法,在业务会话的过程中,既使UE出现服务区切换的情况,也能使当前业务会话继续进行,从而 Thus, the method for maintaining session continuity of service provided by the present invention, during the service session, even if the service area of ​​the UE handover occurs, current service session can be continued, so that

大大提升用户的业务体验、使业务质量得以保证,另外,由于无需像现有技术那样被迫结束业务会话再向新的服务区网关发起会话建立过程,也就避免了大量多余的会话建立流程,从而节约系统资源。 Greatly enhance the user's service experience, the quality of service can be guaranteed. In addition, since it is unnecessary as the prior art was forced to end service session again initiated the process of establishing a new session gateway service area, thus avoiding a lot of extra session establishment process, thereby saving system resources.

附图说明 BRIEF DESCRIPTION

图1为本发明第一种方法一较佳实施例处理流程示意图; Figure 1 is a process flow diagram illustrating an embodiment of a first preferred embodiment of the inventive method;

图2为应用本发明第一种方法时,UE在不同服务区之间切换的示意图; FIG 2 is a first method of the present invention is applied, a schematic diagram of the UE handover between different service areas;

图3为本发明第二种方法一较佳实施例处理流程示意图; 3 is a process flow diagram of a preferred embodiment of the second method embodiment of the invention;

图4为应用本发明第二种方法时,UE在不同服务区之间切换的示意图; 4 is a schematic view of the application of the second method of the present invention, UE in handover between different service areas;

图5为本发明第三种方法一较佳实施例处理流程示意图。 Example process flow diagram of a third preferred embodiment of the present invention, the method of FIG.

具体实施方式 detailed description

下面结合附图及具体实施例对本发明再作进一步详细的说明。 Specific embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings and.

本发明提供了三种保持业务会话连续性的方法,UE通过自身所在分组交换网的接入网关接入业务承载网并与该业务承载网建立业务会话后,当UE所在的服务区发生变化时,这三种方法的设计思想分别为: The present invention provides three methods of maintaining session continuity service, where the UE through its access service gateway packet switched access network and the bearer network to establish a session with the service after the service bearer network, the service area when the UE is located changes design ideas of these three methods are:

第一种方法、UE与当前所在服务区的网关建立连接,该网关将作为UE当前的服务网关,接入网关再将UE当前的服务网关置为自身的下一跳。 The first method, UE establishes a connection with the current service area where the gateway, the gateway as the UE is currently serving gateway, then the access gateway service the UE is currently set as the next hop gateway itself. 从而UE 通过该服务网关和该接入网关接入业务承载网继续当前业务会话。 Thus the UE continues the current session service access service bearer network by the service gateway and the access gateway.

第二种方法、UE与当前所在服务区的网关建立连接,该网关将作为UE当前的服务网关,再将UE当前的服务网关置为接入网关。 The second method, UE establishes a connection with the current service area where the gateway, the gateway of the UE is currently serving as a gateway, then the gateway services the UE is currently set to the access gateway. 从而UE通过该服务网关接入业务承载网继续当前业务^S舌。 Continue the current service so that the UE ^ S tongue through the service bearer network access service gateway.

第三种方法、该种方法结合了实时业务和非实时业务的特点以及上述第一种方法和第二种方法的处理机制,当UE当前所在服务区的网关与UE建立连接并作为UE当前的服务网关之后,判断当前业务是否为实时业务,如果是, 则将UE当前的服务网关置为接入网关的下一跳;否则将UE当前的服务网关置为接入网关。 The third method, the method combines the characteristics of real-time and non-real-time services as well as the first method and the second method of handling mechanism, when the gateway service area where the UE is currently establishing a connection with the UE and UE as the current after the service gateway, to determine whether the current service for real-time business, and if so, set the current service gateway as the next hop gateway will access UE; otherwise the UE is currently set to service gateway access gateway.

下面结合附图对本发明三种方法的处理加以详细说明。 It is described in detail below the three methods of treatment of the present invention in conjunction with the accompanying drawings.

图1为本发明第一种方法一较佳实施例处理流程示意图。 Figure 1 is a process flow diagram of a preferred embodiment of the first method embodiment of the invention. 如图1所示,具 1, with

体处理步骤包括: Body processing step comprises:

步骤101:当UE所在的服务区发生变化时,UE与当前所在服务区的网关建立连接,该网关将作为UE当前的服务网关。 Step 101: When the service area where the UE is changed, UE establishes a connection with the current gateway where the service area, which will serve as the gateway of the UE is currently serving gateway.

这里,每一服务区应包含若干基站(BS) , UE应首先与自身所在服务区中信号最强的BS建立无线链路承载,然后才能与该服务区的网关建立业务连接。 Here, each service area should contain several base stations (BS), the UE should first establish a radio link bearer with its own service area where the strongest signal BS, and then set up a service connection with the gateway to the service area. 该与UE建立无线链路承载的BS ^皮称为UE的服务BS。 The bearer establishing a wireless link with the UE BS ^ BS UE is called a serving skin. UE在移动过程中将不断检测来自各个BS的无线信号强度,当UE发现某一非服务BS的BS信号在不断加强,且信号强度达到一定程度以至满足BS切换条件时,UE将与该信号满足切换条件的BS建立无线链路承载,并释放自身与原来服务BS之间的无线链路,该与UE建立无线链路承载的BS将称为UE 当前的服务BS,从而完成BS之间的切换过程。 The UE mobility procedure in a wireless signal strengths constantly monitored from each of the BS, when the UE finds a non-serving BS continues to strengthen the BS signal, and the signal strength to a certain extent even BS satisfying a handover condition, the UE satisfy the signal BS handover condition establish a radio link bearer, and releases the radio link between itself and the original serving BS, the BS establish a radio link with the UE it will be referred to as UE bearers current serving BS, thereby completing the handover between the BS process. 当UE当前的服务BS与UE 原来的服务BS属于不同的服务区时,可以说UE所在的服务区发生了变化。 When the UE is currently serving BS and the original serving BS UE belong to different service area, we can say the service area where the UE has changed.

当UE在BS之间切换时,UE还将把各个BS的信息上报给自身当前的服务网关,因此UE的服务网关可以实时判断UE所在的服务区是否发生变化。 When switching between BS UE, the UE also reports the information to each BS the current serving gateway itself, thus serving gateway determines whether the UE can vary in real time the service area where the UE. 关于实现判断的具体处理方法属公知技术,且非本发明重点,因此本文不作详述。 Determining a specific processing method for achieving the genus known technique, and not the focus of the present invention, and therefore not detailed herein. 由于,本发明并不涉及UE与BS之间处理的改进,所以为简化描述,本文仅描述UE与网关、以及网关之间的处理,而将其中UE与BS 之间的处理略去。 Since the present invention is not directed to an improved process between the BS and the UE, so as to simplify the description, only the process described herein between the UE and the gateway, and the gateway, and wherein the process between the UE and the BS is omitted.

步骤102: UE当前的接入网关获取UE当前服务网关的网关信息,与该服务网关建立连接,并按该服务网关的网关信息修改当前业务路由,将该服务网关置为自身的下一跳,然后释放自身与UE之间的连接。 Step 102: UE acquires the current access gateway gateway information of the UE is currently serving gateway establishes a connection with the serving gateway, the service in accordance gateway information to modify the current service routing gateway, the service is set as the next hop gateway itself, then release the connection between itself and the UE.

其中,接入网关获取服务网关的网关信息的方法基本有两种:一、UE 可在与服务网关建立连接后将当前该服务网关的网关信息发送给该接入网关。 Wherein the gateway acquires the access gateway information service gateway, there are two basic methods: First, the UE may transmit the current information of the gateway to the access service gateway after establishing a connection with the gateway serving gateway. 二、服务网关与UE建立连接之后,从UE获取该接入网关的网关信息,并按此4妄入网关的网关信息与该接入网关建立连4妾并发送加入请求给该接入网关,该加入请求中携带该服务网关的网关信息。 Second, after the UE establishes a connection with the serving gateway, the gateway information acquired from the UE to the access gateway, and gateway information 4 Click to jump into the gateway establish a connection with the access gateway 4 concubine added and transmits the request to the access gateway, the addition of gateway information request carries the service gateway. 本发明并不限定接入网关获取服务网关的网关信息的具体方法。 The present invention is not limited to a specific method gateway access gateway serving gateway information acquired. 这里,网关信息至少包括:网关的 Here, the gateway information includes at least: Gateway

地址信息,可能还能包括该网关的相关BS地址信息。 Address information may also include relevant information BS address of the gateway.

此外,UE在与服务网关建立连接之后,可发送携带接入网关的网关信 Further, after the UE establishes a connection with the serving gateway, the gateway may send an access gateway carrying channel

息的切换通知给服务网关,从而服务网关可根据接收到的切换通知向接入网 Switching notification message to the service gateway, whereby the service network to the access gateway may handover according to the received notification

关发送加入请求。 Off sending join request. 该切换通知可为独立发送的消息,或者作为步骤101所述UE与服务网关建立连接时的连接建立请求的一部分进行发送。 The switching notification message may be transmitted independent, or connected as a connection is established at step 101 UE and the serving gateway establishes a portion of the transmitted request.

步骤103:经过步骤101和步骤102的处理,在上行链路,UE依次经由该服务网关和该接入网关接入业务承载网来继续业务会话;而在下行链路,业务承载网依次经由该接入网关和该服务网关来继续业务会话。 Step 103: After processing steps 101 and 102 in uplink, the UE sequentially via the serving gateway and the access gateway access service network bearer service session to continue; in the downlink bearer network traffic via sequentially the access gateway and the service business gateway to continue the session. 可见,经过上述处理,当前业务会话的连续性得以保证。 Visible through the above treatment, the current service session continuity is ensured.

在业务会话过程中,所述接入网关将服务网关置为自身下一跳即修改自身下一跳地址的处理并不会产生太多处理时延,对当前业务会话的质量也不会产生太多影响,而将UE的服务网关置为接入网关的处理则需要较多的处理时延, 对业务会话质量会有较大影响。 In the service during the session, the service access gateway for their own set the next hop gateway i.e. the next hop address modification process itself does not generate much of the processing delay, the quality of the current service session is not generated too and more influence, and the service gateway will set the UE to handle the access gateway you need more processing delays, quality of service session there will be a greater impact. 但当业务会话结束时,就无需考虑对业务质量的影响,可直接将当前服务网关置为UE的接入网关,即执行如下步骤104和步骤105: However, when the service ends the session, there is no need to consider the impact on the quality of service may be directly set to the current serving gateway access gateway of the UE, i.e., perform the following steps 104 and 105:

步骤104:当UE的业务^^舌结束时,UE当前的接入网关按步骤102获取的服务网关的网关信息,将自身保存的该UE的用户信息发送给UE当前的服务网关,该接入网关再释放自身与该服务网关之间的连接,由该服务网关作为UE的接入网关。 Step 104: When the service ends ^^ tongue UE, UE information of the current access gateway service gateway Gateway acquired by step 102, transmits the user information stored by the UE to the UE the current serving gateway, the access then release the self-gateway connection between the serving gateway by the service gateway as an access gateway of the UE. 这里,所述用户信息包括:用户标识、以及该用户的业务相关 Here, the user information comprises: a user identifier, and the service-related user

j吕息等等o Lu information like o j

步骤105:该服务网关将同时成为UE当前的接入网关,UE直接通过该网关接入业务承载网进行通信。 Step 105: The service gateway will also become the current access gateway UE, the UE communicates directly through the access gateway service bearer network.

图2为应用本发明第一种方法时,UE在不同服务区之间切换的示意图。 FIG 2 is a first method of the invention, a schematic diagram of the UE handover between different service areas. 如图2所示,UE由上至下进行移动,并依次经过服务区1、服务区2和服务区3。 2, the UE moves from top to bottom, and sequentially through a service area, the service area and service area 3 2. 其中,服务区1、服务区2和服务区3的网关分别为网关1、网关2 和网关3,且网关l、网关2和网关3与IMS网络连接。 Wherein the service area 1, area 2 and the service gateway service region 3 are the gateway 1, gateway 2 and the gateway 3, and L gateways, gateway 3 and gateway 2 is connected to an IMS network.

首先,UE位于服务区1,与网关l建立业务连接,并通过网关l接入IMS网络,此时网关1作为UE的接入网关,业务会话的々某体数据从IMS 网络经过网关1流向UE。 First, a UE is located in the service area, establishes a service connection with the gateway L, and L access to the IMS network through a gateway, the gateway 々 a case body 1 as data access gateway of the UE, a service session from the UE 1 to the gateway through the IMS network .

当UE移动至服务区2时,UE与网关2建立连接,此时网关2作为UE 的服务网关。 When the UE moves to the service area 2, UE 2 establishes a connection with the gateway, the gateway 2 at this time as the serving gateway of the UE. 网关l再将网关2置为自身的下一跳,并与UE断开连接。 Gateway 2 l and then set the next hop gateway itself, and disconnect and the UE. 从而业务会话的媒体数据从IMS网络依次经过网关1、网关2流向UE。 So that the media service session data from the IMS network 1 in sequence through the gateway, the gateway 2 to the UE.

同理,当UE移动至服务区3时,UE与网关3建立连接,此时网关3 作为UE的服务网关。 Similarly, when the UE moves to the service area 3, UE establishes a connection with the gateway 3, gateway 3 at this time as the serving gateway of the UE. 网关l再将网关3置为自身的下一跳,然后网关2与UE断开连接。 L gateway then set the next hop gateway 3 itself, and then disconnect the gateway 2 and the UE. 从而业务会话的媒体数据从IMS网络依次经过网关1、网关3流向UE。 So that the media service session data from the IMS network 1 in sequence through the gateway, the gateway 3 to the UE.

图3为本发明第二种方法一较佳实施例处理流程示意图。 3 is a process flow diagram of a preferred embodiment of the second method embodiment of the invention. 如图3所示, 具体处理包括: 3, the specific process comprises:

步骤301:当UE所在的服务区发生变化时,UE与当前所在服务区的网关建立连接,该网关将作为UE当前的服务网关。 Step 301: When the service area where the UE is changed, UE establishes a connection with the current gateway where the service area, which will serve as the gateway of the UE is currently serving gateway.

步骤302: UE当前的接入网关获取UE的服务网关的网关信息,该接入网关发送UE的用户信息给该服务网关,该接入网关再与该UE断开连接, 由该服务网关作为UE的接入网关。 Step 302: UE acquires the current access gateway information of the UE gateway serving gateway, the access gateway transmits the user information of the UE to the serving gateway, the access gateway to the UE before disconnecting, by the service gateway as a UE the access gateway. 这里,所述用户信息包括:用户标识、 该用户的业务相关信息、以及当前进行的业务会话的信息等等。 Here, the user information comprises: a user identifier, the user of the service-related information, service information and the like for the current session.

其中,接入网关获取服务网关的网关信息的方法与图l所述相同,基本有两种,这里不再详迷重复说明。 Wherein the access gateway acquires information service gateway Gateway manner as FIG l of the same, there are two basic, not described in detail herein fans repeated.

步骤303:该服务网关将同时成为UE当前的接入网关,UE直接通过该网关接入业务承栽网继续当前业务会话。 Step 303: The service gateway will also be the UE current access gateway, UE continue the current service session directly through the network gateway access service commitments planted.

图4为应用本发明第二种方法时,UE在不同服务区之间切换的示意图。 FIG 4 is a second method of the invention, a schematic diagram of the UE handover between different service areas. 如图3所示,UE由上至下进行移动,并依次经过服务区1、服务区2和服务区3。 3, the UE moves from top to bottom, and sequentially through a service area, the service area and service area 3 2. 其中,服务区1、服务区2和服务区3的网关分别为网关1、网关2和网关3,且网关l、网关2和网关3与IMS网络连接。 Wherein the service area 1, area 2 and the service gateway service region 3 are the gateway 1, gateway 2 and the gateway 3, and L gateways, gateway 3 and gateway 2 is connected to an IMS network.

首先,UE位于服务区1,与网关l建立业务连接,并通过网关l接入IMS网络,此时网关1作为UE的接入网关,业务会话的4某体数据乂人IMS 网络经过网关1流向UE。 First, a UE is located in the service area, establishes a service connection with the gateway L, and L access to the IMS network through a gateway, the gateway 1 at this time as an access gateway of the UE, a service session of the volume data qe 4 people IMS network through the gateway 1 to the UE.

当UE移动至I良务区2时,UE与网关2建立连"t妄,此时网关2作为UE 的服务网关。网关1再将UE的用户信息发送至网关2,将当前业务会话切换至网关2,并与UE断开连接,此时网关2同时作为UE的服务网关和接入网关。从而业务会话的媒体数据从IMS网络经过网关2流向UE。 When the UE moves to the service area when the good I 2, UE 2 is connected with a gateway to establish "t jump, this time as a gateway serving gateway of the UE 2 User UE information and then transmits the gateway 1 to gateway 2, will switch to the current service session gateway 2, and disconnect the UE, the gateway 2 at this time as both a serving gateway of the UE and the access gateway thus media data service session from the UE 2 to the gateway through the IMS network.

同理,当UE移动至服务区3时,UE与网关3建立连接,此时网关3 作为UE的服务网关。 Similarly, when the UE moves to the service area 3, UE establishes a connection with the gateway 3, gateway 3 at this time as the serving gateway of the UE. 网关2再将UE的用户信息发送至网关3,将当前业务会话切换至网关3,并与UE断开连接,此时网关3同时作为UE的服务网关和接入网关。 User information to the gateway 2 transmits to the UE, then the gateway 3, the current service session to the gateway switch 3, and disconnects from the UE, the gateway 3 at this time simultaneously as the serving gateway of the UE and an access gateway. 从而业务会话的媒体数据从IMS网络经过网关3流向UE。 So that media data service session 3 to the UE from the gateway through the IMS network.

本文所述业务承栽网通常指IMS网络,而UE所在的分组交换网可为GPRS网络、或WLAN网络、或WiMAX网络等等。 The bearing service herein refers to plant network is typically an IMS network, and the packet-switched network where the UE may be a GPRS network or a WLAN network, a WiMAX network, or the like. UE可以在相同或不同类型的分组交换网的服务区之间切换,即:UE当前所在的分组交换网与UE The UE may switch between the same or different types of packet-switched network service areas, namely: the UE is currently located packet-switched network and the UE

景技术可知,UE可能在不同类型分组交换网的服务区之间进行切换,比如: 图2中,服务区1属GPRS网络,而服务区2属WLAN网络,此时,接入网关与服务网关之间可采用IP协议进行通信。 King known technique, the UE may be carried out between the service areas of different switching types of packet-switched network, such as: In FIG. 2, the service area belongs to a GPRS network, and the service area 2 genus WLAN network, at this time, access gateway and the service gateway It may be used to communicate between the IP protocol. 当UE在相同类型分组交换网的服务区之间进行切换时,则服务网关和接入网关之间采用当前类型分组交换网支持的业务承载协议进行通信。 When the UE switches between the service areas of the same type packet-switched network, the communication service type of a current packet using the bearer service network supports the protocol exchange between the gateway and the access gateway. 关于服务网关和接入网关之间具体的建立连接、交互信息等通信过程均按标准业务承载协议进行,且服务网关与接入网关之间的通信非本发明解决的问题,因此本文不作进一步详述。 For specific process of establishing a communications connection, interaction information between the serving gateway and the access gateway protocols are standard bearer service, and solve the problem of the present invention, the non-communication between the serving gateway and the access gateway, and therefore will not be further detailed herein above.

图5为本发明第三种方法一较佳实施例处理流程示意图。 Example process flow diagram of a third preferred embodiment of the present invention, the method of FIG. 本实施例针对实时业务和非实时业务的特性进行不同的处理,对实时业务采用所述第一种方法,而对非实时业务采用所述第二种方法。 Example embodiment of the present process for different characteristics of real-time and non-real-time services, the first method using the real-time services, non real-time services and employing the second method. 如图5所示,具体处理步骤包括:步骤501:当UE所在的服务区发生变化时,UE与当前所在服务区的网关建立连接,该网关作为UE当前的服务网关。 As shown in FIG. 5, the specific processing steps include: Step 501: When the UE is located in the service area changes, the current UE establishes a connection with the gateway service area is located, the gateway as the UE is currently serving gateway.

步骤502:判断当前业务是否为实时业务,如杲是,则执行步骤503; 否则^M亍步骤505。 Step 502: determining whether the current service is real-time service, such as Gao yes, perform step 503; otherwise, step 505 ^ M right foot.

这里,可根据当前业务的服务质量要求(QoS)值,或根据用户的感受质量要求(QOE, Quality of Experience )信息进行判断,或根据当前业务类型进行判断,比如:语音业务为实时业务,而消息业务为非实时业务。 Here, the value of the current quality of service requirements of the traffic (the QoS), or is determined according to a user's perceived quality requirements (QOE, Quality of Experience) information, or is determined according to the current service type, for example: voice service for real-time service, and business news non-real-time service.

步骤503: UE当前的接入网关获取UE当前服务网关的网关信息,与该服务网关建立连接,并按该服务网关的网关信息修改当前业务路由,再将该服务网关置为自身的下一跳,然后释放自身与UE之间的连接。 Step 503: UE acquires the current access gateway gateway information of the UE is currently serving gateway establishes a connection with the serving gateway, the service in accordance gateway information to modify the current service routing gateway, then the service is set as the next hop gateway itself and then release the connection between the UE itself.

步骤504:在上行链路,UE依次经由该服务网关和该接入网关接入业务承载网来继续业务会话;而在下行链路,业务承载网依次经由该接入网关和该服务网关来继续业务会话,结束当前处理。 Step 504: In the uplink, the UE sequentially access bearer service network via the serving gateway and the access gateway continues to service session; in the downlink bearer network traffic continues sequentially through the access gateway and the service gateway service session, end the current process.

步骤505: UE当前的接入网关获取UE的服务网关的网关信息,该接入网关按此服务网关的网关信息发送UE的用户信息给该服务网关,该接入网关再与该UE断开连接,由该服务网关作为UE的接入网关。 Step 505: UE acquires the current access gateway gateway information of the UE to a serving gateway, the access gateway information gateway service gateway Click UE transmits user information to the service gateway, the access gateway to the UE before disconnecting , by the service gateway as an access gateway of the UE.

步骤506:该服务网关将同时成为UE当前的接入网关,UE直接通过该网关接入业务承栽网继续当前业务会话。 Step 506: The service gateway will also be the UE current access gateway, UE continue the current service session directly through the network gateway access service commitments planted.

与图l所述同理,在所述步骤504之后还可进一步包括: Similarly to the Figure l may further comprising, after the step 504:

步骤507:当UE的业务会话结束时,UE当前的接入网关按步骤503 得到的服务网关的网关信息将自身保存的该UE的用户信息发送给该服务网关,该接入网关再释放自身与该服务网关之间的连接,由该服务网关作为UE的接入网关。 Step 507: When the user information is sent UE service session, information service gateway Gateway Access Gateway UE currently obtained by the step 503 of the UE stored in itself to the serving gateway, the access gateway and then release itself connection between the serving gateway, as an access gateway by the service gateway of the UE.

步骤508:该服务网关将同时成为UE当前的接入网关,UE直接通过该网关接入业务承栽网继续当前业务会话。 Step 508: The service gateway will also be the UE current access gateway, UE continue the current service session directly through the network gateway access service commitments planted.

综上所述,应用本发明方法UE在各个服务区之间切换时,仍能保证当前进行的业务会话的连续性,并能进一步考虑到实时业务和非实时业务对实时性要求的不同,而采用不同的处理机制,以有效利用分组交换网的网关资源维护业务连续性、并兼顾各种业务的质量。 In summary, the method of the invention when the UE switches between the respective service areas, can still ensure the continuity of service for the current session, and further taking into account real-time and non-real time services of different real-time requirements, and using different mechanisms in order to effectively utilize the gateway packet-switched network resources to maintain continuity of service, taking into account the various quality of services.

以上所述仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 The above are only preferred embodiments of the present invention but are not intended to limit the scope of the present invention. 凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等,均包含在本发明的保护范围内。 Any modifications within the spirit and principle of the present invention, equivalent substitutions, improvements, etc., are included within the scope of the present invention.

Claims (10)

1、一种保持业务会话连续性的方法,UE通过自身所在的分组交换网的接入网关接入业务承载网,并与该业务承载网建立业务会话;其特征在于,当UE所在的服务区发生变化时,该方法包括: A3、UE与当前所在服务区的网关建立连接,该网关为UE当前的服务网关; B3、判断当前业务是否为实时业务,如果是实时业务,则所述接入网关将所述服务网关置为自身的下一跳,UE通过该服务网关和该接入网关接入业务承载网继续当前业务会话;否则将所述服务网关置为UE的接入网关,UE通过该服务网关接入业务承载网继续当前业务会话。 1. A method for maintaining session continuity service, the UE by the access network gateway access to packet switched network bearer service itself is located, and to establish a service session with the service bearer network; wherein, when the UE is located in the service area when a change occurs, the method comprising: A3, UE establish a service area where the old gateway connected to a gateway of the UE is currently serving gateway; B3, judging whether the current service is a real-time service, if a real-time service, the access the gateway to the serving gateway itself set the next hop, the UE through the access gateway and serving gateway access network bearer service continue the current service session; otherwise, set the serving gateway is an access gateway of the UE, UE by the service gateway access service bearer network to continue the current service session.
2、 根据权利要求1所述的方法,其特征在于,步骤B3中,在所述UE通过服务网关和接入网关接入业务承载网继续当前业务会话之后,进一步包括步骤C3:当业务^^舌结束时,将所述服务网关置为UE的接入网关,UE通过该服务网关接入业务承载网。 2. The method according to claim 1, wherein step B3, the UE after the serving gateway and the access gateway via the access network bearer service to continue the current service session, further comprising the step C3: When the service ^^ At the end of the tongue, set the serving gateway is an access gateway of the UE, the UE by the serving gateway access service bearer network.
3、 根据权利要求1所述的方法,其特征在于,步骤B3中,所述将服务网关置为下一跳的方法为:所述接入网关获取所述服务网关的网关信息,与该服务网关建立连接,按该服务网关的网关信息修改当前业务路由,将该服务网关置为自身的下一跳,再将自身与UE之间的连接释放。 3. The method according to claim 1, wherein, in step B3, the service is set for the next hop gateway method: acquiring the gateway information of the access gateway serving gateway, the service the gateway establishing a connection, modifying the current service routing by the gateway information of the serving gateway, the service gateway is set, then the connection between itself and the UE releases itself as the next hop.
4、 根据权利要求3所述的方法,其特征在于,所述接入网关获取服务网关的网关信息的方法为:所述接入网关从UE获取所述服务网关的网关信息;或者, 所述服务网关从UE获取所述接入网关的网关信息,按此接入网关的网关信息发送自身的网关信息给该接入网关。 4. The method of claim 3, wherein said method information obtaining access gateway serving gateway to gateway: the gateway access gateway acquires information from the UE to the serving gateway; or a gateway serving gateway information acquired from the access gateway UE, Click gateway access gateway sends its information to the access gateway information gateway.
5、 根据权利要求l所述的方法,其特征在于,步骤B3中,所述判断业务类型的方法为:根据当前业务的服务质量要求QoS或者用户的感受质量要求QoE进行判断,或根据当前业务的类型进行判断。 5. The method as claimed in claim l, wherein, in step B3, the service type determination method: according to the current requirement of the service quality perceived quality QoS or QoE judge the user's requirements, or according to the current service type judgment.
6、 根据权利要求1所述的方法,其特征在于,步骤B3中,所述将服务网关置为UE的接入网关的方法为:所述接入网关获取所述服务网关的网关信息, 该接入网关按该服务网关的网关信息发送UE的用户信息给该服务网关,该接入网关再与该UE断开连接,由该服务网关作为UE当前的接入网关。 6. The method of claim 1, wherein, in step B3, the method is set to the serving gateway of the UE to the access gateway: acquiring the gateway information of the access gateway serving gateway, the access gateway UE is transmitted by gateway information of the service user information to the gateway serving gateway, the access gateway to the UE before disconnecting, by the service gateway as an access gateway UE currently.
7、 根据权利要求2所述的方法,其特征在于,步骤C3中,所述将服务网关置为UE的接入网关的方法为:所述接入网关发送UE的用户信息给该服务网关,该接入网关再与该服务网关断开连接,由该服务网关作为UE当前的接入网关。 7. The method of claim 2, wherein, in the step C3, the method is set to the serving gateway of the access gateway for UE: user information of the UE sending the access gateway to the service gateway, the access gateway before disconnecting the gateway to the service, by the service gateway UE as the current access gateway.
8、 根据权利要求1所述的方法,其特征在于,UE当前所在的分组交换网与UE原来所在的分组交换网为相同或不同类型的分组交换网;当UE当前所在的分组交换网与UE原来所在的分组交换网为同类型分组交换网时,所述服务网关与接入网关按该类型分组交换网的业务承载协议进行通信;交换网时,所述服务网关与接入网关按因特网协议进行通信。 8. A method according to claim 1, characterized in that the packet-switched network the UE is currently located and the packet-switched network where the UE originally the same or different types of packet-switched network; packet-switched network when the UE with the UE is currently located when the packet-switched network where the original is the same type of a packet switched network, the serving gateway and the access gateway to communicate according to the protocol of the bearer service type of the packet-switched network; exchange network, the serving gateway and the access gateway according to an Internet protocol communicate.
9、 根据权利要求1或8所述的方法,其特征在于,所述UE所在的分组交换网为:GPRS网络、或WLAN网络、或WiMAX网络。 9. The method according to claim 18, wherein the packet switched network to the UE is located: GPRS network, or a WLAN network, or a WiMAX network.
10、 根据权利要求1或2所述的方法,其特征在于,所述业务承载网为IMS 网络。 10. The method of claim 1 or claim 2, wherein said bearer service network is an IMS network.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1139228C (en) 1998-12-04 2004-02-18 艾利森电话股份有限公司 Handover in communication system
US20050025164A1 (en) 2003-07-16 2005-02-03 Telefonaktiebolaget L M Ericsson (Publ) Seamless hand-off of mobile node to a wireless local area network (WLAN)
CN1606740A (en) 2001-12-19 2005-04-13 汤姆森特许公司 Method and apparatus for handing off a mobile terminal between a mobile network and a wireless LAN
US6904025B1 (en) 1999-10-12 2005-06-07 Telefonaktiebolaget Lm Ericsson (Publ) Wide area network mobility for IP based networks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1139228C (en) 1998-12-04 2004-02-18 艾利森电话股份有限公司 Handover in communication system
US6904025B1 (en) 1999-10-12 2005-06-07 Telefonaktiebolaget Lm Ericsson (Publ) Wide area network mobility for IP based networks
CN1606740A (en) 2001-12-19 2005-04-13 汤姆森特许公司 Method and apparatus for handing off a mobile terminal between a mobile network and a wireless LAN
US20050025164A1 (en) 2003-07-16 2005-02-03 Telefonaktiebolaget L M Ericsson (Publ) Seamless hand-off of mobile node to a wireless local area network (WLAN)

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