CN101466122A - Method, system and device for switching to developmental packet system network - Google Patents

Method, system and device for switching to developmental packet system network Download PDF

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CN101466122A
CN101466122A CN 200710302302 CN200710302302A CN101466122A CN 101466122 A CN101466122 A CN 101466122A CN 200710302302 CN200710302302 CN 200710302302 CN 200710302302 A CN200710302302 A CN 200710302302A CN 101466122 A CN101466122 A CN 101466122A
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ue
mme
network
service
cs
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CN 200710302302
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CN101466122B (en )
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于益俊
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华为技术有限公司
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Abstract

The invention discloses a method for switching to the evolutionary grouping system EPS network, a system and a device thereof; wherein, the method comprises the following steps: when the grouping area PS business and the circuit area CS business of user equipment (UE) are switched to the EPS network, the network entity provided for the CS business and the network entity provided for the PS business for the UE respectively adopt the same setting mode; the CS business and the PS business of the UE are respectively switched to the same movable management entity in the EPS according to the UE relative information. The method, the system and the device can ensure that the CS business and the PS business of the same UE can be switched to the same MME in the evolutionary grouping system.

Description

一种切换到演进的分组系统网络的方法、系统及装置技术领域 A method of switching network to the Evolved Packet System, system and device Technical Field

本发明涉及一种移动通信网络中的切换技术,特别涉及一种切换到演进的分组系统网络的方法、系统及装置。 The present invention relates to a mobile communication network switching technology, and more particularly to a method of switching network to Evolved Packet System, system and apparatus.

背景技术 Background technique

3GPP组织定义的移动通信网为第二代/第三代(2G/3G , 2Generation/3 Generation )网S各,包4舌无线4^入网络(RAN, Radio Access Network)和核心网络(CN, Core Network)两个部分。 3GPP organization defined by the mobile communications network is a second generation / third generation (2G / 3G, 2Generation / 3 Generation) S each network, the packet radio tongue 4 ^ 4 to the network (RAN, Radio Access Network) and a core network (the CN, Core Network) in two parts. 其中,RAN用于处理所有与无线有关的功能,而CN处理移动通信网内所有的话音呼叫和数据连接,并实现和外部网络的交换和^各由功能。 Wherein, the RAN for handling all radio-related functionality, while the CN handles all voice calls and data connections within the mobile communication network, and to achieve switching, and the external network and each of the function ^. RAN和CN之间进行l史据交换。 L performed between the RAN and the CN, according to the history of the exchange.

如图1所示,图1为3GPP组织定义的移动通信网的一个实施例,图1 为现有4支术通用分组无线服务(GPRS, General Packet Radio Service ) /通用移动通信系统(UMTS, Universal Mobile Telecommunication System )网络构架图,具体包括用户设备(UE, User Equipment) 、 RAN和CN。 Embodiment of a mobile communication network shown in Figure 1, Figure 1 is defined by the 3GPP organization, figure 1 is a prior art four general packet radio service (GPRS, General Packet Radio Service) / Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunication System) network architecture diagram, including a user equipment (UE, user equipment), RAN and CN. 在GPRS 中,RAN包括基站收发信机(BTS, Base Transceiver Station)和基站控制器(BSC, Base Station Controller), UE通过BTS和BSC接入CN;在UMTS 中,RAN包括节点B (NodeB)和无线网络控制器(RNC, Radio Network Control) , UE通过所属的NodeB以及管辖该NodeB的RNC接入CN;在CN中,包括电路交换域(CS, Circuit Switched)和分组交换域(PS, Packet Switched),分别处理电路域业务和分组域业务,其中CS的核心网控制面实体为移动业务交换中心/访问者位置寄存器(MSC/VLR, Mobile Service Switching/Visitor Location Register),而PS的核心网控制面实体是服务网关支持节点(SGSN) , SGSN和MSC之间存在Gs接口。 In GPRS, RAN comprises base transceiver stations (BTS, Base Transceiver Station) and base station controllers (BSC, Base Station Controller), UE access to the CN through the BTS and the BSC; In UMTS, RAN includes a Node B (NodeB) and a radio network controller (RNC, radio network Control), UE and NodeB access to the CN via the RNC Territories NodeB belongs; in the CN, including circuit switched domain (CS, circuit switched) domain and a packet switched (PS, packet switched ), respectively, the processing circuit domain and packet domain service, wherein the CS core network control plane entity to the mobile services switching center / visitor location register (MSC / VLR, mobile service switching / visitor location register), and the PS core network control plane entity is a service gateway support node (SGSN), the presence of Gs interface between the SGSN and MSC. PS中还包括GPRS网关支持节点(GGSN),与SGSN之间相连接。 PS also comprises a gateway GPRS support node (GGSN), and is connected between the SGSN.

为了应对无线宽带技术的挑战,保持3GPP网络的领先优势,3GPP在2004年底制定了长期演进计划(LTE, Long Term Evolution),除了对无线接入网演进的研究,3GPP还要进行系统架构方面的演进工作,并将其定义为系统架构演进(SAE, System Architecture Evolution),因此整个计划4安照结构划为也可以分为两个部分:无线侧, 一般指LTE;网络侧, 一般指SAE。 To meet the challenges of wireless broadband technology, stay ahead of the 3GPP network, we developed a 3GPP long term evolution (LTE, Long Term Evolution) at the end of 2004, in addition to research on the evolution of wireless access networks, but also for 3GPP system architecture of Evolution of the work, and defined as the system architecture evolution (SAE, system architecture Evolution), so that the entire security program according to structure 4 may also be classified as divided into two parts: the radio side, generally refers to the LTE; network side, generally refers to SAE. 目前,3GPP已经确定了LTE/SAE系统架构,并命名为演进的分组系统(EPS, Evolve Packet System)。 Currently, 3GPP has been determined that the LTE / SAE system architecture, named Evolved Packet System (EPS, Evolve Packet System).

图2为现有技术EPS的网络架构图,如图所示,演进的移动网络系统架构更加扁平,接入网部分将原先的NodeB和RNC合并为eNodeB,并抛弃了CS域,仅保留了原来的PS域。 FIG 2 is a prior art network architecture of EPS, as shown, the mobile network system architecture evolved more flat, the access network part of the original RNC and NodeB combined into an eNodeB, and discarded the CS domain, retaining only the original PS domain. 当UE从LTE接入SAE时,对于语音业务和数据业务,eNodeB均通过Sl接口分别与移动管理实体(MME,Mobility Management Entity)和服务网关(S-GW, Serving Gateway)连接,其中和MME之间为Sl-MME的控制面接口,和S-GW之间为Sl-U的用户面接口, S-GW通过分组数据网络网关(P-GW)连接到分组网络或多媒体子系统(IMS)网络,对于一般的数据业务则接入分组网络,对于其他业务,包括语音类业务,则接入IMS网络,完成处理。 When the UE from the SAE LTE access for voice and data services, are respectively connected to an eNodeB and a mobile management entity (MME, Mobility Management Entity) and a serving gateway (S-GW, Serving Gateway) via an interface Sl, wherein the MME and between between the control plane Sl-MME interface and the S-GW is a user plane Sl-U interface S-GW through a packet data network gateway (P-GW) connected to a packet network or multimedia subsystem (IMS) network for general data service access to the packet network, for other services, including voice-based service, the access to the IMS network to complete the process.

在GPRS/UMTS网络中,业务由CS和PS共同完成,对于PS业务而言,如果随着UE的移动,服务UE的SGSN发生了改变,则源侧的SGSN根据BSC提供的目的SGSN标识选择一个目的SGSN,将UE的数据切换到目的SGSN上。 In GPRS / UMTS networks, by the CS service and PS together to complete, for a PS service, as if the mobile UE, SGSN serving the UE has changed, then the source SGSN according to the purpose of the SGSN-side identification BSC provides a selection object SGSN, to handover the UE to the destination data SGSN. 对于CS业务也有类似处理,源侧的MSC/VLR根据BSC提供的目的MSC/VLR标识选择一个目的MSC/VLR,将UE的数据切换到目的MSC/VLR上。 For CS traffic has a similar process, MSC / VLR source side of a selected object MSC / VLR according to the purpose of providing MSC BSC / VLR identification data of the UE handover to the destination MSC / the VLR.

但是,EPS网络由PS演进而来,CS不再需要。 However, EPS evolved network of PS, CS no longer needed. 当UE从GPRS/UMTS网络,即2G/3G网络切换到EPS网络时,CS业务需要将MSC/VLR切换到EPS的MME; PS业务也需要将SGSN切换到EPS的MME;而当UE切换到EPS网络后,只能存在一个服务的MME,所以需要保证CS域的MSC/VLR选择切换的MME和PS的SGSN选择切换的MME是同一个MME。 When the UE from the GPRS / UMTS network, i.e. 2G / 3G network to switch to the EPS network, the CS service needs to MSC / VLR to switch to the EPS MME; PS services need to SGSN to switch to EPS, the MME; and when the UE is switched to EPS after the network, MME there is only one service, it is necessary to ensure that MSC / VLR CS domain selection MME and the SGSN PS handover selecting a MME-MME handover is the same.

对于PS业务的切换,可以采用现有的PS切换流程来完成,即PS的SGSN接收到BSC/RNC的切换请求消息后,根据该消息携带的目标小区信息选择一个EPS中的MME,并将该切换请求转发给该MME,进行UE的切换。 For PS service handover, PS handover may be employed prior to the completion of the process, i.e. the SGSN receives the PS handover to BSC / RNC's request message, the MME EPS select a message based on the information carried in the target cell, and the the handover request is forwarded to the MME, a UE handover.

PS业务的具体切换过程为:UE当前所在的SGSN,即源侧的SGSN根据源侧的BSC/RNC提供的目的BSC/RNC的目的标识(Target ID )构造一个全域名(FQDN, Full Qualified Domain Name)进行域名服务器(DNS,Domain Name Server)解析,DNS根据该FQDN返回符合条件的目的侧可用的SGSN的IP地址列表,源侧的SGSN根据设定的算法在列表中选择一个SGSN (比如设定的方法为轮选,则第一次选第一个,第二次选第二个...)将UE进行切换,从而达到在网络中均衡选择SGSN。 DETAILED switching process of the PS service for the: object BSC the UE is currently located SGSN, SGSN i.e. the source side provided by BSC source side / RNC / RNC object identifier (Target ID) Constructs a fully qualified domain name (FQDN, Full Qualified Domain Name ) domain name server (DNS, domain Name server) resolution, DNS returns the IP address list of the SGSN qualified based on the destination side are available FQDN, SGSN source SGSN side is selected according to a set algorithm in the list (such as setting the method selected wheel, the first selected first, the second ... is selected from the second) the handover of the UE, so as to achieve equalization in the network selected SGSN.

源侧SGSN构造的FQDN的格式为:mcXXXX..mncYYY.mccZZZ.gprs,其中XXXX是目的RNC ID, YYY是目的移动网络编码,ZZZ是目的移动国家编码。 FQDN format source side is configured SGSN: mcXXXX..mncYYY.mccZZZ.gprs, where XXXX is the object of the RNC ID, YYY is an object of the mobile network coding, ZZZ is the country code of the destination mobile.

当将PS业务从2G/3G网络切换到EPS网络时,目的侧的Target ID为Target eNodeB ID,源侧SGSN也可用将该Target ID构造为FQDN进行DNS解析,从而得到目的侧MME的IP地址,由于该DNS解析方式考虑了MME的负荷分担,所以能够实现MME的负荷分担。 When the PS service handover from the 2G / 3G network to the EPS network, as the destination side Target ID Target eNodeB ID, the source SGSN side DNS resolution may also be configured to the FQDN The Target ID, to obtain the IP address of the MME object side, Since the DNS resolution contemplate the MME load balancing can be achieved MME load balancing.

但是这种对PS业务的切换方法,并不能直接应用到CS业务的切换,更不能保证MSC/VLR和SGSN负荷分担地选才奪切换到同一个MME。 However, this switching method of the PS services and CS handover can not be applied directly to the service, but can not guarantee the MSC / VLR and SGSN was selected load sharing switch to capture a same MME.

对于CS业务的切换处理,源侧MSC/VLR接收到源侧的BSC/RNC提供的目的BSC/RNC的Target ID后,判断出目的BSC由一个新的MSC/VLR服务,则选择该确定的MSC/VLR,并转发切换请求命令进行UE的切换。 After the destination BSC for the CS service of the handover process, the source-side MSC / VLR receives the source side of the BSC / RNC provides / RNC to Target ID, it is determined that the destination BSC of a new MSC / VLR service, selecting the identified MSC / VLR, and forward the handover request command to the handover UE.

当将CS业务从2G/3G网络切换到EPS网络时,目的侧的Target ID为Target eNodeB ID,源侧MSC/VLR也可以根据该Target ID判断出目的BSC位于EPS网络内,并找到对应的月良务的MME,向服务的MME转发切换请求命令进行UE的切换。 When the CS service is switched from the 2G / 3G network to an EPS network, Target ID object side is the Target eNodeB ID, the source-side MSC / VLR may be determined based on the Target ID a destination BSC is located within the EPS network, and find the corresponding month good works of MME, the MME forwards the handover request command to switch serving the UE.

上述这种切换方法对CS业务切换有效,如果要将该切换方法应用到EPS网络中,必须使EPS网络中的MME支持移动应用部分(MAP, MobileApplication Part)协议栈并支持七号信令网络特性,比如提供信令点编码等,而这两个要求是EPS网络所不具备的功能,所以目前无法实现。 This switching method of the above-described handover active CS service, if you want to apply the method of switching to the EPS network, must MME in the EPS network supports Mobile Application Part (MAP, MobileApplication Part) protocol stack and support VII signaling network feature , such as providing a signaling point code and the like, these two requirements are not available in the EPS network function, it is currently not possible. 另外,该切换方法选择出的MME往往是一个确定的网元,所以不能实现MME负荷分担。 Further, the switching method selected MME is often a certain network element, MME load balancing can not be realized.

因此,对于CS业务的切换,目前提出了单信呼叫连续性(SRVCC, SingleRadio Voice Call Connectivity )技术,用以完成语音业务在2G/3G网络和EPS网络的切换连续性。 Thus, for the handover of CS service, a single channel currently proposed call continuity (SRVCC, SingleRadio Voice Call Connectivity) technology for voice service handover complete continuity 2G / 3G network and EPS network. 一种典型的SRVCC方法是EPS网络中的MME模拟2G/3G网络中的BSC/RNC功能,该模拟功能可以由一个独立的语音交互功能(Voice IWF或IWF, Voice Inte腦rking Function)模块来完成,该模块可以集成到MME中,也可以作为一个单独的实体存在,该IWF支持MAP协议栈并支持七号信令网络特性。 A typical method is SRVCC BSC / RNC function in the EPS network MME analog 2G / 3G network, the analog function (rking Voice IWF or IWF, Voice Inte Brain Function) by an independent voice interaction function module to complete the module can be integrated into an MME, may be present as a separate entity, the IWF supports MAP protocol stack and supports the 7th signaling network characteristics.

图3为现有技术采用SRVCC的系统构架图,如图所示,当UE从2G/3G网络切换到EPS网络时,管辖UE的BSCZRNC所属的MSC/VLR根据TargetID判断出目的IWF位于EPS网络内,并找到将UE切换到IWF上。 Figure 3 is a prior art system using SRVCC architecture diagram, as illustrated, when the UE handover from the 2G / 3G network to an EPS network, MSC BSCZRNC UE belongs Territories / VLR determines that the object located in the IWF according to the EPS network TargetID and find the UE will switch to the IWF. 在该方法中,IWF也可以提供到2G/3G的PS业务的SGSN的接口( Iu-ps ),因此对PS业务切换,也可以直接选择提供BSC/RNC功能的IWF,然后将UE切换到所选择的IWF,完成整个切换。 In this method, IWF may also be provided to the 2G / 3G PS service of the SGSN interface (Iu-ps), so the PS service handover can directly select the IWF provide the BSC / RNC function, then the UE to the selected IWF, to complete the handover.

为了在EPS网络中提供CS业务,还提出了一种通过演进分组网络提供CS业务的方法(CSoPS, CS Domain Service over evolved PS access ),该方法允许UE在EPS网络中也能接入CS核心网完成CS业务。 In order to provide CS services in an EPS network, a method has also been proposed (CSoPS, CS Domain Service over evolved PS access) for providing a CS service by an evolved packet network, the method allows the UE in the EPS network can access the CS core network CS complete business. 当UE从2G/3G网络移动到EPS网络时,也存在CS业务在2G/3G和EPS网络中的切换处理,CSoPS的一种典型网络结构如图4所示,和图3的结构类似,即MME向MSC/VLR提供A/Iu-cs接口,因此当CS业务从2G/3G向EPS切换时,MME的选择方法和图3所述的方法类似。 When the UE 2G / 3G network to move from the EPS network, there are CS service handover process in 2G / 3G and the EPS network, a typical network structure CSoPS As shown, the structure of FIG. 3 and 4 is similar to, i.e., MME provides a / Iu-cs interface to a MSC / VLR, so when CS service handover from 2G / 3G to the EPS, the MME similar selection method and the method of FIG. 3.

CSoPS的另一种方法是MSC和MME之间新增一个提供切换功能的接口,完成切换信令的交互,如图5所示,该图中MME和MSC/VLR之间采用Z2接口连接。 Another method is to add a CSoPS provide switching functionality between the MSC and the MME interface, handover signaling interaction is completed, as shown in FIG. 5, the use of the interface between the connector Z2 FIG MME and MSC / VLR. 但是具体切换的流程以及eMSC如何选择MME都还没有提供技术方案。 But the specific switching process and how to select the MME eMSC have yet to provide technical solutions.

另外,在EPS网络中,为了保持MME之间负荷分担,所以会将MME配置为MME池(MME POOL )。 Further, in the EPS network, in order to maintain load balancing between the MME, the MME will be configured as MME pool (MME POOL). 在MME POOL内的MME可以进行负荷分担处理,因此,CS的MSC/VLR和PS的SGSN在选择MME时也需要考虑MME的负荷分到处理,从而避免GPRS/UMTS网络和EPS网络边界处的MME负担过重。 MME in the POOL MME may perform load sharing process, and therefore, the CS of the MSC / VLR and SGSN in the PS to be considered when choosing the MME MME assigned to processing load, thereby avoiding MME GPRS / UMTS network and EPS network at the border overburdened.

综上,无论CS业务采用上述哪种方法切换,当UE从2G/3G网络切换到EPS网络时,如果同时存在CS业务和PS业务,则CS业务的MSC/VLR和PS业务的SGSN都需要分别在切换过程中选择一个相同的MME作为UE在EPS网络中的服务节点,在选择过程中还需要考虑MME POOL负荷分担处理。 In conclusion, regardless of which of the above methods CS service switching when the UE switches from 2G / 3G network to an EPS network, if there is a CS service and PS service while the CS service MSC / SGSN VLR and PS services are required, respectively, selecting a same node as a serving MME UE in the EPS network in the handover process, the selection process also need to consider the POOL MME share the processing load.

可以看出,现有技术提供了CS业务和PS业务分别从2G/3G网络切换到EPS网络的方法,但是这两种方法是相互独立的,因此不能保证CS业务的MSC/VLR和PS业务的SGSN选择相同的MME。 As can be seen, the prior art provides each CS service and PS service handover from the 2G / 3G network to the EPS network method, but the two methods are separate, there is no assurance MSC / VLR CS service and PS service of SGSN select the same MME. 如果通过人工配置的方式,使MSC/VLR和SGSN选择相同的MME,不但在切换过程中需要人工参与,对数量比较大的UE切换,需要耗费大量的人力物力;而且由于MSC/VLR只能选l奪一个MME,所以SGSN通过DNS解析的方式也只能得到同一个MME才能保i正选择相同的MME,而不能通过负荷分担方式任一选择MME,这会导致2G/3G网络和EPS网络之间的MME负荷过重。 If, by way of manual configuration of the MSC / VLR the MME and SGSN select the same, not only need human intervention during the handover, large number of the UE handover, requires a lot of manpower and resources; and because the MSC / VLR can only be selected from l wins a MME, SGSN so DNS resolution by way of only one MME to obtain the same positive retention i select the same MME, and not by way of any of a selected load balancing MME, which can lead to 2G / 3G network and EPS networks MME overload between.

发明内容 SUMMARY

本发明实施例提供一种切换到演进的分组系统网络的方法,该方法能够保证将同一UE的PS业务和CS业务切换到演进的分组系统中的同一MME上。 Embodiment of the present invention to provide a method of packet switched networks evolved system, which can ensure the same handover UE and the CS services to the PS service on the same MME in an evolved packet system.

本发明实施例还提供一种移动通信系统,该系统能够保证将同一UE的PS业务和CS业务切换到演进的分组系统中的同一MME上。 Embodiments of the invention further provides a mobile communication system which can ensure the same handover UE and the CS services to the PS service on the same MME in an evolved packet system.

本发明实施例还提供一种移动通信装置,该装置能够保证将同一UE的PS业务和CS业务切换到演进的分组系统中的同一MME上。 Embodiments of the invention further provides a mobile communication apparatus which can ensure the same handover UE CS and PS service traffic to the same MME in an evolved packet system.

根据上述目的,本发明的技术方案是这样实现的: According to the above-described object, the technical solution of the present invention is implemented as follows:

一种切换到演进的分组系统EPS网络的方法,该方法包括: A handover method for a packet to the evolved system EPS network, the method comprising:

用户设备UE的分组域PS业务和电路域CS业务切换到EPS网络时,为UE提供CS业务的网络实体和提供PS业务的网络实体分别采用相同的设置方式才艮据UE相关信息,将UE的CS业务和PS业务分别切换到EPS中的同一移动管理实体MME上。 When the user equipment UE packet domain PS services and CS domain CS service is switched to the EPS network, to provide the CS service for the UE network entity and the network entity providing PS services respectively the same arrangement was Gen According UE-related information of the UE CS service and PS service are switched to the same mobility management entity MME EPS in.

一种移动通信系统,该系统包括:为UE提供PS业务的网络实体、为UE提供CS服务的网络实体以及MME,其中, A mobile communication system, the system comprising: a network entity providing PS services for the UE, the network entity provides the UE and the MME CS service, wherein

所述为UE提供PS业务的网络实体,用于采用所设置的方式为UE选择在EPS网络中提供PS业务的MME,将UE的PS业务切换到该MME上; The PS service for the UE to provide a network entity, for employing the UE selects a set way to provide PS services in the EPS network to the MME, the UE a PS service handover to the MME;

所述为UE提供CS业务的网络实体,用于采用所设置的方式为UE选择在EPS网络中提供CS业务的MME,将UE的CS业务切换到该MME上,该MME和所选择的为UE提供PS业务的MME相同。 The service provided for the UE CS network entity, for employing a set way to provide CS services to the UE selects the MME in an EPS network, the CS service of the UE to the MME handover, the MME and the UE selected PS offers the same service MME.

一种移动通信装置,该装置包括:选择模块和切换模块,其中, A mobile communication device, the apparatus comprising: a selection module and a switching module, wherein

选择模块,用于采用所设置的方式为UE选择在EPS网络中提供PS业务的MME,所选择的MME和为UE在EPS网络中提供CS服务的MME相同,或者采用所设置的方式为UE选择在EPS网络中提供CS业务的MME,所选择的MME和为UE在EPS网络中提供PS服务的MME相同; A selection module for employing a set way selected for the UE to provide PS services in the EPS network MME, the MME and the UE selected to provide CS services in an EPS network, the same MME or provided by way selected for the UE providing CS services in an EPS network MME, the MME and the UE selected to provide PS services in the EPS network MME same;

切换模块,用于将UE的PS业务切换到所选择的MME;或者将UE的CS业务切换到所选择的MME上。 Switching means for switching the PS service of the UE to the MME selected; or CS service of the UE is switched to the selected MME.

从上述方案可以看出,本发明实施例提供的方法、系统及装置当UE从2G/3G网络切换到EPS网络中时,无论是PS业务切换还是CS业务切换,都采用所设置的相同方式,根据UE相关信息选择EPS网络中的MME,这样,使同一UE的CS业务和PS业务选择相同的MME,而不同的UE选择不同的MME。 As can be seen from the above embodiment, the present invention provides a method, system, and apparatus for, when the UE handover from 2G / 3G network to the EPS network, both CS service or a PS service handover switching, are provided in the same manner, the UE EPS network selection information in the MME, so that the CS service and the PS service of the UE select the same the same the MME, the UE selects a different different MME. 因此,本发明实施例提供的方法、系统及装置併:证将同一UE的PS业务和CS业务切换到演进的分组系统中的同一MME上。 Accordingly, embodiments provide a method, system and apparatus of the present invention and embodiments: the same certificate handover UE and the CS services to the PS service the same MME in an evolved packet system.

附图说明 BRIEF DESCRIPTION

图1为现有技术的GPRS/UMTS的网络架构图; Figure 1 is a prior art GPRS / UMTS network architecture diagram;

图2为现有技术EPS的网络架构图; FIG 2 is a prior art FIG EPS network architecture;

图3为现有技术采用SRVCC的系统构架图; Figure 3 is a prior art system using SRVCC architecture diagram;

图4为现有技术CSoPS的系统构架一图; FIG 4 is a prior art architecture CSoPS systems;

图5为现有技术CSoPS的系统构架二图; FIG 5 is a prior art system architecture CSoPS FIG two;

图6为本发明实施例切换到EPS网络的方法流程图; FIG 6 is switched to the flowchart of a method embodiment of the present invention, the EPS network;

图7为本发明实施例提供的在CSoPS架构下切换UE的网络示意图; Figure 7 a schematic view of a network in the handover UE CSoPS architecture according to an embodiment of the present invention;

图8为本发明实施例提供的SRVCC架构下切换UE的网络示意图; FIG 8 is a network diagram at handover of a UE SRVCC architecture according to an embodiment of the present invention;

图9为本发明实施例一提供的切换到EPS网络的方法一流程图; 9 a flowchart of a method to switch to the EPS network according to a first embodiment of the present invention;

图10为本发明实施例五提供的切换到EPS网络的方法一流程图; Figure 10 a flowchart of a method of handover according to a fifth embodiment of the present invention, the EPS network;

图11为本发明实施例五提供的切换到EPS网络的方法二流程图; FIG 11 switching method according to a fifth embodiment of the EPS network to a flow chart of the present invention, two;

图12为本发明实施例五提供的切换到EPS网络的方法三流程图; FIG 12 switching method according to a fifth embodiment of the EPS network to a flow chart of the present invention, three;

图13为本发明实施例提供的一种切换到EPS网络的系统示意图; A handover to the embodiment of FIG. 13 EPS network system of the present invention to provide a schematic diagram;

图14为本发明实施例提供的一种切换到EPS网络的装置示意图。 FIG 14 a schematic view of an apparatus to switch to the EPS network according to an embodiment of the present invention.

具体实施方式 Detailed ways

为了使本发明的目的、技术方案和优点更加清楚明白,以下举具体实施例并参照附图,对本发明进行进一步详细的说明。 In order to make the object of the present invention, technical scheme and advantages clearer, the following specific examples cited with reference to the accompanying drawings, the present invention will be further described in detail.

本发明实施例提供的方法、系统及装置当UE从2G/3G网络切换到EPS网络中时,无论是PS业务切换还是CS业务切换,都采用所设置的相同方式选择EPS网络中的MME,使同一UE的CS业务和PS业务选4奪相同的MME,而不同的UE选才奪不同的MME。 The method provided in the embodiment of the present invention, the system and apparatus, when the UE switches from 2G / 3G network to the EPS network, whether it is a PS service handover or CS service is switched, are used in the same manner set selected EPS network, the MME, so that CS services and PS services of the same UE selected the same MME 4 wins, and different UE before the election won different MME.

在本发明实施例中,所设置的相同方式可以为DNS解析方式,也可以 In an embodiment of the present invention, it may be provided in the same manner as DNS resolution mode, may be

为采用查询系统配置表的方式。 As a way of using query system configuration table.

图6为本发明实施例切换到EPS网络的方法流程图,其具体步骤为:步骤601、确定将UE的PS业务和CS业务分别切换到EPS网络;随着UE的移动,由当前为UE提供CS业务的接入实体,即BSC/RNC FIG 6 is switched to the flowchart of a method embodiment of the invention the EPS network, including the following steps: Step 601, the UE determines a CS service and PS service handover to the EPS network, respectively; with the movement of the UE, the UE is provided by the current CS service access entity, i.e. BSC / RNC

确定将UE的CS业务从2G/3G网络切换到EPS网络中;由当前为UE提供 The UE determines a CS service handover from 2G / 3G network to the EPS network; currently provided by the UE

CS业务的接入,即BSC/RNC确定将UE的PS业务从2G/3G网络切换到EPS网络中; Access to the CS service, i.e. BSC / RNC to determine the PS service of the UE handover from 2G / 3G network to the EPS network;

步骤602、为UE提供CS业务的网络实体和提供PS业务的网络实体分别采用相同的设置方式,根据UE相关信息分别为UE选择在EPS网络中提供CS业务H务和PS业务的MME,两者所选择的MME为同一个; Step 602, the UE provides CS services to network entity and the network entity providing PS services are provided in the same manner, to provide CS service and PS service H service related information according to the UE, respectively in the UE selects the MME in the EPS network, both the selected MME for the same;

在本步骤中,为UE提供CS业务的网络实体为MSC/VLR或IWF,为UE提供PS业务的网络实体为SGSN或IWF; In this step, a CS service network entity is a UE MSC / VLR or the IWF, the UE provides a network entity for the PS service or the IWF SGSN;

在本步骤中,采用相同的设置方式可以为DNS解析方式或者查询系统配置表方式; In this step, the same arrangement can be resolved manner or mode to query the DNS system configuration table;

UE相关信息可以为UE的IMSI信息、MSISDN信息、为UE提供PS业务的网络实体设备编号信息和为UE提供CS业务的网络实体设备编号信息、或源标识(Source ID )信息等,其中,Source ID信息为UE所属的RNC/BSC的标识ID信息。 UE-related information, the UE provides PS services the IMSI information, MSISDN information of a UE network entity device number information and providing CS services for a UE network entity device number information, or the source identifier (Source ID) information or the like, wherein, the Source ID information of the UE belongs RNC / BSC identification ID information.

步骤603、为UE提供CS业务的网络实体和提供PS业务的网络实体将UE的CS业务和PS业务分别切换到所选择的EPS中的同一MME上。 Step 603, the CS service provided for the UE and a network entity of the network entity PS service of the UE in CS and PS services are switched to the same service selected MME of the EPS.

在该实施例中,如果选择的设置方式为DNS解析方式,则由于DNS解析方式具有选择MME的负荷分担特性,所以可以进一步使切换到的MME In this embodiment, if the selected mode is set DNS resolution mode, since the MME DNS resolution mode having a selected characteristic of a load sharing, it is possible to switch the MME further

负荷均衡。 Load balancing.

在本发明实施例中,当采用图3所示的SRVCC系统架构时,如果IWF和MME合一,则MSC/VLR和SGSN选择IWF就是选择MME,可以采用本发明实施例提供的选择MME方法;当IWF和MME分离时,MSC/VLR 和SGSN可以先选择一个固定的IWF,再由该固定的IWF为CS业务和PS 业务选择相同的MME;或者也可以由MSC/VLR选择一个确定的IWF,再由IWF和SGSN选择相同的MME。 In an embodiment of the present invention, when using SRVCC system architecture shown in FIG. 3, if the IWF and the MME unity, then the MSC / VLR and SGSN selects an MME selection is IWF, the method selects an MME according to an embodiment of the present invention may be employed; when the IWF and the MME separation, MSC / VLR and SGSN may first select a fixed IWF, then the CS service and PS service selection same MME by this fixed IWF is; or may select a determined IWF by the MSC / VLR, then select the same IWF and the MME SGSN.

图7为本发明实施例提供的在CSoPS架构下切换UE的网络示意图,包括:2G/3G网络和EPS网络,其中,2G/3G网络中的MSC/VLR和EPS网络的MME之间通过Z2接口相连接。 Figure 7 a schematic view of a network in the handover UE CSoPS architecture according to an embodiment of the present invention, comprising: 2G / 3G network and the EPS network, wherein, between the MME 2G / 3G network in the MSC / VLR and the EPS network via the interface Z2 connected. 当UE在2G/3G网络时,可以同时附着在CS和PS,并开展CS业务和PS业务。 When the UE in 2G / 3G network, can be attached simultaneously CS and PS, PS and CS service and conduct business. 随着UE的移动,需要将UE切换到EPS网络中。 With the movement of the UE, the UE needs to be switched to the EPS network. 这时,UE将UE相关信息发送给BSC/RNC,当BSC/RNC 分别判断需要将当前的CS业务和PS业务切换到EPS网络时,BSC/RNC向CS的MSC/VLR以及PS的SGSN发送切换要求消息,MSC/VLR和SGSN 分别根据设定的相同DNS解析方式选择同一MME,然后向该MME发起切换流程,完成切换处理。 In this case, the UE UE sends the relevant information to the BSC / RNC, when the BSC / RNC needs to determine whether each of the current switch CS service and PS service to the EPS network, BSC / RNC to the SGSN sends a handover of CS MSC / VLR and the PS required message, MSC / VLR and SGSN are the same MME selection according to the same DNS resolution is set, and then initiate a handover procedure to the MME, the handover process is completed.

在本实施例中,MSC/VLR和SGSN可以采用DNS解析方式来保证负荷均衡地选4奪相同MME。 In this embodiment, MSC / VLR and SGSN DNS resolution may be employed to ensure that the load balancing mode selected from the same MME 4 wins.

图8为本发明实施例提供的SRVCC架构下切换UE的网络示意图,包括:2G/3G网络和EPS网络,其中,2G/3G网络中的MSC/VLR和EPS网络的IWF之间通过A/Iu-cs相连接,该IWF可以单独设置或设置在MME中。 FIG 8 is a network diagram at handover of a UE SRVCC architecture according to an embodiment of the present invention, comprising: 2G / 3G network and the EPS network, wherein, between the A IWF 2G / 3G network in the MSC / VLR and the EPS network / Iu -cs connected, the IWF may set separately or set in the MME. 当UE在2G/3G网络时,可以同时附着在CS和PS,并开展CS业务和PS 业务。 When the UE in 2G / 3G network, can be attached simultaneously CS and PS, PS and CS service and conduct business. 随着UE的移动,需要将UE切换到EPS网络中。 With the movement of the UE, the UE needs to be switched to the EPS network. 这时,UE将UE 相关信息发送给BSC/RNC,当BSC/RNC分别判断需要将当前的CS业务和PS业务切换到EPS网络时,BSC/RNC向CS的MSC/VLR以及PS的SGSN 发送切换要求消息。 In this case, the UE UE sends the relevant information to the BSC / RNC, when the BSC / RNC needs to determine whether each of the current switch CS service and PS service to the EPS network, BSC / RNC to the SGSN sends a handover of CS MSC / VLR and the PS Require message. MSC/VLR和SGSN分别根据设定的相同DNS解析方式选择同一MME (在IWF设置在MME中时),然后向该MME发起切换流程,完成切换处理。 MSC / VLR and SGSN, respectively select the same MME (when provided in the IWF MME) according to the same DNS resolution is set, and then initiate a handover procedure to the MME, the handover process is completed. 或者MSC/VLR和SGSN根据查询系统配置表方式选4爭一个IWF (在IWF单独设置),然后由该IWF选择一个MME后,通过所选择的IWF向该MME发起切换流程,完成切换处理。 Or MSC / VLR and SGSN 4 is selected from a contention IWF (provided separately IWF) according to the system configuration table query mode, selected by the IWF and the MME latter, through the selected IWF initiate a handover procedure to the MME, the handover process is completed. 或者MSC/VLR根据查询系统配置表方式选择一个IWF (在IWF单独设置),然后由该IWF和SGSN分别选择一个相同的MME后,通过所选择的IWF向该MME发起切换流程,完成切换处理。 Or after the MSC / VLR IWF selects one (provided separately IWF) The query system configuration table, then choose a same IWF and the MME from the SGSN, respectively, through the selected MME IWF to initiate a handover procedure, the handover process is completed.

以下举几个具体实施例说明本发明实施例提供的方法,其中实施例一~ 实施例四采用图7所述的网络架构;实施例五~实施例六采用图8所述的网络架构。 The following examples illustrate a few specific embodiments of the method provided by embodiments of the present invention, wherein an embodiment of the fourth embodiment using the - network architecture of FIG. 7; Examples 5-6 using six embodiment of the network architecture of FIG. 8.

实施例一 Example a

图9为本发明实施例一提供的切换到EPS网络的方法一流程图,该方法使在GPRS/UMTS网络中的UE切换到EPS网络中,涉及的切换业务包括PS业务和CS业务,其具体步骤为: Figure 9 provides a switching method according to an embodiment of the EPS network flow chart of the present invention, the method enables the UE in the GPRS / UMTS network to switch to the EPS network, to the PS service handover and services include CS service, specific steps:

步骤901、为UE当前提供服务的UE源侧的RNC/BSC判断需要将UE 切换到EPS网络时,如果当前存在PS业务,则向源侧的SGSN发送切换要求(Relocation Required/Handover Required )消息,该消息中包括目的侧的Target ID。 When the RNC UE source side of the step 901, serving the UE current / BSC determines the need to handover the UE to the EPS network, currently exists PS service, is sent to the SGSN source side switching request (Relocation Required / Handover Required) message, Target ID included in the message destination side.

在本步骤中,如何判断需要将UE切换到EPS网络以及如何获取到该消 In this step, it needs to be determined how the UE to the EPS network, and how to obtain the elimination

息中包括目的侧的Target ID都是现有技术,这里不再累述。 Information included in the object side of the Target ID is the prior art, there is no longer tired.

在本步骤中,所述的目的侧的Target ID为目的侧eNodeB ID。 In this step, Target ID is a destination side of the object side of the eNodeB ID.

步骤902、当前存在CS业务,该RNC/BSC向当前为UE服务的源侧 Step 902, the currently existing CS service, the RNC / BSC side to the current source UE and services

MSC/VLR发送切换要求消息,该消息包括目的侧的Target ID。 MSC / VLR sends a handover required message, the message comprising a destination side Target ID. 在本步骤中,所述的目的侧的Target ID为目的侧eNodeB ID。 In this step, Target ID is a destination side of the object side of the eNodeB ID. 步骤901和步骤902没有时序上的先后关系,本实施例以先发起PS业 Step 901 and step 902 does not have a timing relationship, in the present embodiment, the PS service initiated first

务切换再发起CS业务切换为例,实际情况中PS切换和CS切换步骤没有时 Service switch again initiates a CS service switching, for example, the actual situation in the CS and PS handover when the handover procedure is not

序上的先后关系。 Has the relationship between the sequence.

步骤903、源侧的服务SGSN判断UE需要切换到EPS网络,则服务控制实体需要发生改变,所以SGSN通过DNS解析方式找到目的MME的IP 地址,向具有该IP地址的MME发送转发切换请求消息。 Step 903, the SGSN determines the source side of the UE needs to handover to the EPS network, the service control entity changes need to occur, so the SGSN to find the IP address of the destination MME through DNS resolution mode, transmits forwards the handover request message to the MME having the IP address.

步骤904、源侧的服务MSC/VLR判断UE需要切换到EPS网络,通过DNS解析方式找到目的MME的IP地址,向具有该IP地址的MME发送转发该切换请求消息。 Step 904, the source side serving MSC / VLR determines the UE needs to switch to the EPS network, to find the IP address by DNS resolution target MME manner, forwards the handover request message sent to the MME having the IP address.

在该步骤中,由于采用和步骤903相同的DNS解析方式,所以得到的MME的IP地址也和步骤903得到的IP地址相同。 In this step, since step 903 the same DNS resolution mode, the same MME obtained the IP addresses and the IP address obtained in step 903.

在该步骤中,根据不同的网络部署,也可以向MME发送切换请求(Relocation Request)消息。 In this step, depending on the network deployment, you may send a handover request (Relocation Request) message to the MME.

步骤905、 MME根据从SGSN和MSC/VLR发送的切换命令消息,向执行UE的目的侧资源准备处理。 Step 905, MME according to the handover command message transmitted from the SGSN and MSC / VLR, to the target side preparation processing resources to implement the UE.

在该步骤中,PS业务和CS业务的资源准备是单独处理还是一起处理, 在这里不进行限定,该步骤为现有步骤,在这里不再累述。 In this step, PS services and CS services are handled separately prepare resources or processed together, not defined herein, the step prior to step, where no longer tired.

步骤906、当MME完成PS业务的目的侧资源准备处理后,则向SGSN 发送转发切换请求响应消息。 Step 906, after completion of the PS service MME object-side resource preparation process, the SGSN sends a forward handover request response message.

步骤907、当MME完成CS业务的目的侧资源准备处理后,则向MSC/VLR发送转发切换请求响应消息。 Step 907, the MME when the CS service object side complete resource preparation process, then sends the forwarding handover to MSC / VLR request response message.

在该步骤中,也可以#4居网络部署情况,向MSC/VLR发送切换请求响应消息。 In this step, it is also home network deployment # 4, transmits a handover request response message to the MSC / VLR.

步骤908、执行完步骤906后,SGSN向RNC/BSC发送PS的切换命令消息。 Step 908, After step 906, SGSN PS handover command message transmitted to the RNC / BSC.

步骤909、执行完步骤907后,MSC/VLR向RNC/BSC发送CS的切换命令消息。 Step 909, After step 907, MSC / VLR transmits a handover command message to the CS RNC / BSC.

步骤910、 RNC/BSC分别接收到SGSN和MSC/VLR发送的切换命令消息后,向UE发送切换命令。 After step 910, RNC / BSC and SGSN receives the handover MSC / VLR sending the message command, transmits a handover command to the UE.

步骤911、 UE执行切换处理,和目的侧网络一起完成后续切换处理。 Step 911, UE performs handover processing, and the target side processing network with the subsequent handover is completed. 该步骤为现有的流程。 The existing process step.

在图9所述的方法中,步骤903和步骤904为了保证MSC/VLR和SGSN 选中相同的MME,同时考虑到需要负荷分担的选择MME,在本实施例中根据UE的国际移动用户标识(IMSI, International Mobile Subscriber Identity)标识采用DNS解析方式来选择相同的MME,具体的实现方法为:MSC/VLR 和SGSN构造相同的FQDN发送给DNS, DNS对接收的FQDN进行DNS 解析,返回目的侧可用的一个MME的IP地址,乂人而使处于IMSI标识相同号段的UE选择相同的MME,不同IMSI标识号段的UE选择不同的MME。 In the method of FIG. 9, step 903 and step 904 in order to ensure the MSC / VLR and SGSN to select the same MME, the MME needs taking into account the selection of load sharing, in accordance with the present embodiment, an international mobile subscriber identity of the UE (IMSI , International Mobile Subscriber identity) identified using DNS resolution mode to select the same the MME, specific method is: the same MSC / VLR and the SGSN is configured FQDN to a DNS, DNS received FQDN of the DNS resolution and returns object side available an IP address of the MME, the people at the same qe UE selects the same identification IMSI number segment MME, the UE selects a different identification IMSI number segment different MME.

IMSI的编号》见则为MCC+MNC+MSIN,而MSIN的编号^见则为: H1H2H39XXXXXX。 IMSI number, "See, compared with MCC + MNC + MSIN, while the number MSIN ^ see was: H1H2H39XXXXXX. 所以,具有相同号段的用户其IMSI编号也具有相同的编码值, 一个典型的号段为MCC+MNC+H1H2H3,更一般的情况是包括更小的粒度的号段,如MCC+MNC+H1H2H39XX,至于选择多长的MSIN可以通过配置的方法来处理,只要保证MSC/VLR和SGSN使用相同的号段构造相同的FQDN即可。 Therefore, users with the same number segment its IMSI number have the same code value, a typical number segment as MCC + MNC + H1H2H3, the more general case that includes a smaller number segment size, such as MCC + MNC + H1H2H39XX As for how long the selected MSIN can be treated by the method of configuration, as long as MSC / VLR and SGSN using the same number of the same configuration can segment FQDN.

进行DNS解析的一个典型的FQDN为: A typical FQDN for DNS resolution is:

H1H2H3 9XX.rncXXXX.mncYYY.mccZZZ.gprs H1H2H3 9XX.rncXXXX.mncYYY.mccZZZ.gprs

DNS对该FQDN只返回一个MME的IP地址,对于其他IMSI号段组装的FQDN则返回其他MME的IP地址。 DNS returns an IP address of the MME only the FQDN, IP address, is returned for another MME FQDN other IMSI number segment assembly.

该实施例中将IMSI号段信息构造FQDN只是一种典型的实现方式,实际使用过程中可以将IMSI号段信息放在FQDN的其他部分,比如: This embodiment is configured in the IMSI number segment information FQDN just a typical implementation, the actual process IMSI number segment may be placed in other portions of the FQDN information, such as:

rncXXXX.mncYYY.mccZZZ.HlH2H39XX.gprs rncXXXX.mncYYY.mccZZZ.HlH2H39XX.gprs

在该实施例中,由于现有技术中包括了MCC和MNC,因此在本实施例构造的FQDN中可以不用再包括MCC和MNC。 FQDN In this embodiment, since the prior art comprises the MNC and MCC, in the present embodiment thus constructed embodiment may no longer comprise MCC and MNC. 实施例二 Second Embodiment

该实施例的切换过程和图9相似,所不同的是,步骤903和步骤904中MSC/VLR和SGSN利用FQDN解析选4奪MME时,不是采用UE的IMSI 信息,而是采用UE的移动台综合业务数字网(MSISDN, Mobile Station Integrated Service Digital Network )信息来完成。 Switching process and is similar to the embodiment 9, except that step 903 and step 904 MSC / VLR and SGSN 4 wins selected utilizing resolve the FQDN MME, the UE uses the IMSI information is not, instead of using a mobile station UE integrated services digital network (MSISDN, Mobile Station integrated service digital network) information to complete. 具体的实现方法为: MSC/VLR和SGSN采用相同的FQDN进行DNS解析,该FQDN中包括MSISDN号段信息,使处于相同号段的用户选择相同的MME,不同号段的用户选择不同的MME。 The specific method is: MSC / VLR and SGSN using the same FQDN for DNS resolution, the FQDN included MSISDN number segment information, allowing users in the same number segment select the same the MME, the user different number segment select different MME.

MSISDN的编号规则为CC+NDC+(0〜9)+序列号(SN),而SN的编号规则为:H1H2H3ABCD。 MSISDN numbering rule for CC + NDC + (0~9) + serial number (SN), and SN number rule: H1H2H3ABCD. 所以,具有相同号段的UE其MSISDN编号也具有相同的编码值, 一个典型的号段为CC+NDC+(0〜9)+HlH2H3,更一般的情况是包括更小的粒度的号段,如CC+NDC+(0~9)+HlH2H3AB,至于选择多长的SN可以通过配置的方法来处理,只要保证MSC/VLR和SGSN使用相同的号^a构造相同的FQDN即可。 Therefore, a UE having the same number segment which MSISDN number also has the same code value, the segment number is a typical CC + NDC + (0~9) + HlH2H3, the more general case that includes a smaller number segment size, such as CC + NDC + (0 ~ 9) + HlH2H3AB, the choice of how long SN may be treated by the method of configuration, as long as MSC / VLR and SGSN using the same numbers ^ can be the same as a configuration of the FQDN.

进行DNS解析的一个典型的FQDN为: HlH2H3AB.rncXXXX.mncYYY.mccZZZ.gprs 或msisdn HlH2H3AB.rncXXXX.mncYYY.mccZZZ.gprs DNS对该FQDN只返回一个MME的IP地址,对于其他MSISDN号段组装的FQDN则返回其他MME的IP地址。 A typical FQDN for the DNS resolution: HlH2H3AB.rncXXXX.mncYYY.mccZZZ.gprs or msisdn HlH2H3AB.rncXXXX.mncYYY.mccZZZ.gprs DNS returns the IP address of the FQDN only one MME, MSISDN number for the other end of assembly FQDN IP addresses of other MME is returned.

该实施例中将MSISDN号段信息作为FQDN的前导只是一种典型的实现方式,实际使用过程中可以将IMSI号段信息放在FQDN的其他部分,比如: This embodiment will MSISDN number range as the FQDN preamble only a typical implementation, the actual process IMSI number segment may be placed in other portions of the FQDN information, such as:

racXXXX.mncYYY.mccZZZ.HlH2H3AB.gprs racXXXX.mncYYY.mccZZZ.HlH2H3AB.gprs

在该实施例中,MSISDN号段部分还可以包括CC和NDC部分,可以根据需要进行配置,只要保证相同用户的服务MSC/VLR和SGSN使用FQDN解析得到的IP地址相同即可。 In this embodiment, MSISDN number segment portion may further include CC and NDC portion can be configured as required, as long as the same user service MSC / VLR and SGSN IP address to resolve the FQDN obtained in the same.

实施例三 Third Embodiment

该实施例的切换流程与图9类似,所不同的是,步骤903和步骤904中MSC/VLR和SGSN利用FQDN解析选择MME时,不是采用UE的IMSI 信息,而是采用MSC/VLR和SGSN的设备编号信息。 The handover procedure is similar to Example 9, except that step 903 and step 904 MSC / VLR and the SGSN using the FQDN when analyzing and choosing the MME, instead of using the IMSI information of the UE, instead of using the MSC / VLR and SGSN, device number information. 具体的实现方法为: MSC/VLR和SGSN采用不同的FQDN进行DNS解析,该FQDN中包括MSC/VLR和SGSN的设备编号信息,DNS在进行DNS数据配置时,保证GPRS/UMTS和EPS网络边界处的相邻MSC/VLR和SGSN设备编号的FQDN返回的MME的IP地址相同,对于其他的相邻的MSC/VLR和SGSN的组合的FQDN返回的MME的IP地址不同。 The specific method is: when the MSC / VLR and SGSN different FQDN DNS resolution, which includes the device number information FQDN MSC / VLR and the SGSN, performing DNS DNS configuration data, to ensure that GPRS / UMTS and EPS network boundary MME same IP address FQDN neighboring MSC / VLR and SGSN returns a device number, a different IP address for FQDN MME combination of other neighboring MSC / VLR and SGSN returned. 从而在保证MSC/VLR和SGSN 获取到相同的MME的同时,也能保证MME的负荷分担。 Thus ensuring MSC / VLR and SGSN acquired while the same MME, the MME can guarantee load sharing.

因此,对于MSC/VLR中进行DNS解析的FQDN为: Thus, FQDN for the DNS resolution MSC / VLR as:

MSC/VLR编号.rncXXXX,mncYYY.mccZZZ.gprs MSC / VLR number .rncXXXX, mncYYY.mccZZZ.gprs

对于SGSN进行DNS解析的FQDN为: For FQDN SGSN DNS resolution is:

SGSN编号.rncXXXX.mncYYY.mccZZZ.gprs SGSN number .rncXXXX.mncYYY.mccZZZ.gprs

或sgsn SGSN编号.rncXXXX.mncYYY.mccZZZ.gprs Or sgsn SGSN number .rncXXXX.mncYYY.mccZZZ.gprs

以上的FQDN中MSC/VLR编号以及SGSN编号可以是编号的全部,也可以是编号的一部分信息;而且SGSN编号和MSC/VLR编号也可以位于该FQDN的其他位置,如gprs之前;另外以上的FQDN中也可以不包括Target ID的mcXXXX.mncYYY.mccZZZ.gprs信息,而只包括MSC/VLR编号和SGSN编号信息。 Above FQDN in MSC / VLR number and SGSN number may be all numbers may be part of the information number; and SGSN number, and MSC / VLR number may be located at other positions that FQDN, as previously GPRS; further more FQDN It may also not include a Target ID mcXXXX.mncYYY.mccZZZ.gprs information, but only comprising MSC / VLR and SGSN ID number information.

实施例四 Fourth Embodiment

该实施例的切换流程与图9类似、方法与实施例三类似,所不同的是, 步骤903和步骤904中MSC/VLR和SGSN利用FQDN解析选择MME时, 不是采用MSC/VLR和SGSN的设备编号信息,而是采用源标识(Source ID ) 信息。 When the handover procedure of this embodiment is similar to FIG. 9, three similar manner as in Example, except that, in step 903, and step 904 MSC / VLR and the SGSN using the FQDN analyzing and choosing the MME, instead of using MSC / VLR and SGSN device number information, instead of using the source identifier (source ID) information. 源侧的RNC/BSC在向MSC/VLR和SGSN发送的切换请求消息中包括该RNC/BSC的ID信息,即Source ID。 RNC in the source-side / BSC handover sent to the MSC / VLR and the SGSN request message including the RNC / ID information of the BSC, i.e., Source ID. 可以采用对于相同的Source ID, MSC/VLR和SGSN选择相同的MME,对于不同的Source ID, MSC/VLR 和SGSN选择不同的MME。 May be used for the same Source ID, MSC / VLR and SGSN select the same MME, for different Source ID, MSC / VLR and the SGSN to select a different MME. 从而也能保证MSC/VLR和SGSN选择相同MME 的同时,MME能被负荷分担的使用。 Thus ensures MSC / VLR and SGSN simultaneously select the same MME, the MME can use load sharing.

具体的实现方法为:MSC/VLR和SGSN采用相同的FQDN进行DNS 解析,该FQDN中包括发送切换要求的RNC/BSC标识信息,DNS根据该FQDN返回对应的IP地址。 The specific method is: MSC / VLR and SGSN using the same FQDN for DNS resolution, the FQDN included in the transmission request to switch the RNC / BSC identification information, the DNS returns the corresponding IP address according to the FQDN.

由于Source ID和Target ID的编号失见则类似,也包括Source RNC ID以及所处的MCC和MNC信息,在组装FQDN时,可以仅包括Source RNC ID,也可以包括源侧RNC所处的MCC及MNC信息等,因此一个典型的FQDN 为: Since the Source ID and see numbered loss is similar to the Target ID, Source RNC ID, and also includes the MCC and MNC information which, when assembling the FQDN, may include only the Source RNC ID, RNC may also include the source side and in which the MCC MNC information, etc., is thus a typical FQDN:

srncWWWW.rncXXXX.mncYYY.mccZZZ.gprs 其中,WWWW是Source RNC ID。 srncWWWW.rncXXXX.mncYYY.mccZZZ.gprs wherein, WWWW is the Source RNC ID.

也可以将srncWWWW放在该FQDN的其他位置,例如: rncXXXX.mncYYY.mccZZZ.srncWWWW.gprs SrncWWWW also be placed in other positions of the FQDN, for example: rncXXXX.mncYYY.mccZZZ.srncWWWW.gprs

在图8所示的系统架构中,IWF和MSC/VLR通过A/Iu-cs接口连接, 也可以提供到SGSN的Iu-ps接口, MME和SGSN之间利用现有的S3接口连接。 In the system architecture shown in FIG. 8, IWF and MSC / VLR interface via A / Iu-cs, it may also be provided between the Iu-ps interface to the SGSN, MME and the SGSN using the S3 interface existing connection. IWF可以作为MME的一个功能模块集成在MME中,也可以作为一个单独的实体,从而IWF和MME之间通过类似MME之间的S10接口( S10') IWF may be integrated as a functional module of the MME in the MME, may be used as a separate entity, so that between the IWF and the MME through the MME interface between a similar S10 (S10 ')

相连。 Connected. 以下实施例针对该架构提供了多种MME选择方法。 The following examples provide a variety of selection methods of the architecture MME. 实施例五 Fifth Embodiment

当IWF和MME分离时,对于CS业务,可以先选择IWF,再由IWF 选择MME。 When the IWF and the MME separation, for CS services can first select IWF, then the IWF selected MME. 即MSC/VLR可以根据BSC/RNC提供的切换要求消息中的Target ID查询MSC/VLR中的系统配置表,得到IWF的七号信令网信令点编码,从而找到该IWF, IWF再通过DNS解析方式查找到MME。 Target ID inquiry i.e. MSC MSC / VLR can switch BSC / RNC provides the required message / VLR in the system configuration table, to give SS7 network point code IWF in order to find the IWF, through the DNS IWF Find a way to resolve the MME.

而由于SGSN可以通过Iu-ps接口和S3接口连接到MME,因此对于PS 业务,也可以从这两个接口直接进行切换。 Since the SGSN may be connected to the MME via S3 interface and the Iu-ps interface for PS traffic and therefore, may be switched directly from the two interfaces.

当SGSN通过Iu-ps接口进行切换处理时,处理机制和MSC/VLR类似, SGSN根据BSC/RNC提供的Target ID查询SGSN中的系统配置表,得到IWF 的七号信令网信令点编码,IWF再通过DNS解析从而找到该MME。 When the SGSN handover process by the Iu-ps interface to process mechanism and MSC / similar to the VLR, SGSN queries The Target ID SGSN BSC / RNC provides the system configuration table, to give SS7 network point code of the IWF, IWF through the DNS resolution in order to find the MME.

在该情况下,MSC/VLR和SGSN可以选择同一个IWF或不同的IWF, 并由该同一IWF或该两个不同的IWF采用实施例一~实施例四中类似的方法来找到相同的MME。 In this case, MSC / VLR and SGSN may select the same or a different IWF IWF, by the same IWF or the IWF uses two different embodiments - a method according to a fourth embodiment similar to find the same MME.

图10为本发明实施例五提供的切换到EPS网络的方法一流程图,其具体步骤为: FIG 10 switching method according to a fifth embodiment of the EPS network to a flow chart of the present invention, including the following steps:

步骤1001、 UE源侧的服务RNC/BSC判断需要发生切换流程时,如果当前存在PS业务,向SGSN发送切换要求(Relocation Required / Handover Required)消息,该消息中包括目的侧的Target ID。 Step 1001, the source side serving RNC UE / BSC handover process needs to occur is determined, if the current PS service exists, the SGSN transmits Handover Required (Relocation Required / Handover Required) message, the message comprising a destination side Target ID. 即目的侧的eNodeB ID。 I.e. eNodeB ID object side.

步骤1002、如果当前存在CS业务,RNC/BSC向服务的MSC/VLR发送切换要求消息,消息中包括目的侧的Target ID,即目的侧的eNodeB ID。 Step 1002, if the current CS service exists, RNC / BSC to the serving MSC / VLR sends a handover required message, the message comprising destination side Target ID, i.e. eNodeB ID object side.

步骤1003、源侧的服务SGSN根据Target ID查找配置表,得到目的BSC/RNC的七号信令网信令点编码,确定该切换为SGSN内不同RNC之间的切换处理,因此向该BSC/RNC发送切换请求消息。 Step 1003, the SGSN according to the source side of the Target ID lookup table arranged to obtain SS7 network point code object BSC / RNC determines the handover process to switch between different SGSN the RNC, and therefore to the BSC / RNC sends a handover request message.

该步骤中,SGSN选择的BSC/RNC实际为IWFl。 In this step, SGSN selected BSC / RNC actually IWFl.

步骤1004、源侧的服务MSC/VLR根据Target ID查找配置表,得到目的BSC/RNC的七号信令网信令点编码,确定该切换为MSC/VLR内不同RNC之间的切换处理,因此向该BSC/RNC发送切换请求消息。 Step 1004, the source side serving MSC / VLR according to the lookup table configuration Target ID, to give SS7 network point code object BSC / RNC determines the handover process to switch between the MSC / VLR different from the RNC, so to the BSC / RNC sends a handover request message.

该步骤中,MSC/VLR选择的BSC/RNC实际为IWF2。 In this step, MSC / VLR selected BSC / RNC actually IWF2.

步骤1005、 IWFl模拟BSC/RNC收到SGSN发送的切换请求消息后, 通过DNS解析方式找到目的MME的IP地址,向目的MME发送转发切换请求消息。 Step 1005, IWFl analog BSC / RNC receiving the handover request message sent by the SGSN, the MME finds the destination IP address by DNS resolution mode, the destination MME sends a forward handover request message.

步骤1006、 IWF2模拟BSC/RNC收到MSC/VLR发送的切换请求消息后,通过DNS解析方式找到目的MME的IP地址,向目的MME发送转发切换请求消息。 Step 1006, IWF2 analog BSC / RNC receiving the handover MSC / VLR transmits the request message, the MME finds the destination IP address by DNS resolution mode, the destination MME sends a forward handover request message.

步骤1007、 MME才艮据分别从SGSN和MSC/VLR收到的切换消息,实际为分别从IWFl和IWF2处收到,执行目的侧资源准备处理。 Step 1007, MME It was Gen respectively, is actually received from the handover message SGSN and MSC / VLR respectively received from IWFl and IWF2, the destination side performs preparation processing resources.

该步骤中PS业务和CS业务的资源准备是单独处理还是一起处理,本实施例不做限定。 This step CS service and PS service resource preparation process or separately treated together, not limited in the present embodiment. 该流程为现有流程,此处不再赘述。 The process for the existing process, not repeat them here.

步骤1008、 MME完成PS业务的目的侧资源准备处理后,向IWFl发送转发切换请求响应消息。 Step 1008, after completion of the PS service MME object-side resource preparation process, transmits forwards the handover request response message to IWFl.

步骤1009、 MME完成CS业务的目的侧资源准备处理后,向IWF2发送转发切换请求响应消息。 Step 1009, after the completion of the CS service MME resource preparation process of the object-side transmits forwards the handover request response message to IWF2.

步骤1010、IWF1收到MME的转发切换请求响应消息后,模拟BSC/RNC向SGSN发送切换响应消息。 Step 1010, IWF1 MME forwards the received handover request response message, the analog BSC / RNC sends a handover response message to the SGSN.

步骤1011、IWF2收到MME的转发切换请求响应消息后,模拟BSC/RNC Step 1011, IWF2 after receiving the MME forwards the handover request response message, the analog BSC / RNC

向MSC/VLR发送切换响应消息。 To the MSC / VLR sends a handover response message.

步骤1012、 SGSN向RNC/BSC发送切换命令消息。 Step 1012, SGSN transmits to the RNC / BSC handover command message.

步骤1013、 MSC/VLR向RNC/BSC发送切换命令消息。 Step 1013, MSC / VLR transmits to the RNC / BSC handover command message.

步骤1014、 RNC/BSC收到SGSN和MSC/VLR发送的切换命令消息后, Step 1014, RNC / BSC after receiving the handover command message SGSN and MSC / VLR transmitted,

向UE发送切换命令。 Sending a handover command to the UE.

步骤1015、 UE执行切换处理,和目的侧网络一起完成后续切换处理。 Step 1015, UE performs handover processing, and the target side processing network with the subsequent handover is completed. 在图IO所述的方法中,步骤1003和步骤1004 ^f艮据配置一般可选择相 In the method according to FIG IO, step 1003 and step 1004 ^ f gen select phase according to the general configuration

同的IWF,即IWF1和IWF2可以为同一个物理实体。 Different IWF, i.e. IWF1 and IWF2 may be the same physical entity.

为了保证IWF1和IWF2选择的为同一个MME,步骤1005和步骤1006 To ensure IWF1 and IWF2 with selection of a MME, step 1005 and step 1006

中,IWF1和IWF2可以采用实施例一~实施例四中任一的方法进4亍处理。 In, IWF1 and IWF2 embodiments may be employed a method - according to a fourth embodiment of any one of the right foot into 4 treatment.

即进行DNS解析的FQDN中可以包括用户的相关信息,如IMSI信息(实 I.e. FQDN DNS resolution may include information about the user, such as the IMSI information (real

施例一)、MSISDN信息(实施例二)等;也可以包括IWF设备的编号信 Example a), MSISDN information (second embodiment) and the like; IWF may also include a channel number of the device

息信息(实施例三);还可以采用源端RNC/BSC的编号信息(实施例四)。 Message information (third embodiment); the source RNC / BSC number information may also be employed (Example IV).

处理方法与上述类似,本实施例中不再赘述。 Processing method similar to the above embodiment of the present embodiment will not be repeated.

当SGSN通过S3接口进行切换处理时,SGSN根据BSC/RNC发送的 When the SGSN via S3 interface handover process, according to the SGSN transmits BSC / RNC

切换要求消息中携带的Target ID进行DNS查询直接找到MME。 Handover Required message carried in Target ID DNS queries directly to MME. 此时CS At this time CS

业务由IWF来选择MME, PS业务由SGSN来选择MME,因此可以采用实 IWF service selected by the MME, PS service selected by the SGSN MME, the solid can be employed

施例一~实施例四类似的方法来〗呆i正选4奪相同的MME。 Similar procedure according to a fourth embodiment to embodiment a ~ i n〗 stay the same MME 4 wins the election.

图11为本发明实施例五提供的切换到EPS网络的方法二流程图,其具 11 Method Two flowchart of a handover according to a fifth embodiment of the present invention, the EPS network, which has

体步骤为: Body steps:

步骤IIOI、 UE源侧的服务RNC/BSC判断需要发生切换流程时,如果当前存在PS业务,则向SGSN发送切换要求(Relocation Required / Handover Required )消息,该消息中包括目的侧的Target ID,即Target eNodeB ID。 When the serving RNC step IIOI, UE source side / BSC determines the need to switch the flow occurs, if the currently existing PS service, is sent to the SGSN handover requirements (Relocation Required / Handover Required) message, the message comprising a destination side Target ID, i.e., Target eNodeB ID.

步骤1102、当前存在CS业务,则RNC/BSC向服务的MSC/VLR发送切换要求消息,消息中包括目的侧的Target ID,即Target eNodeB ID。 Step 1102, the current presence of CS service, the RNC / BSC MSC to the service / VLR sends a handover required message, the message comprising destination side Target ID, i.e., Target eNodeB ID. 步骤1103、源侧的服务SGSN判断UE需要切换到EPS网络,则服务控制实体需要发生改变,则通过DNS解析机制找到目的MME的IP地址, 向目的MME发送转发切换请求消息。 Step 1103, the SGSN determines the source side of the UE needs to switch to the EPS network, the service control entity changes need to occur, the target MME to find the IP address by DNS resolution mechanism, MME forwards the handover request message transmitted to the destination.

步骤1104、源侧的服务MSC/VLR根据Target ID查找配置表,得到目的BSC/RNC的七号信令网信令点编码,确定该切换为MSC/VLR内不同RNC之间的切换处理,向该BSC/RNC发送切换请求消息。 Step 1104, the source side serving MSC / VLR according to the lookup table configuration Target ID, to give SS7 network point code object BSC / RNC determines the handover process to switch between the MSC / VLR different from the RNC, the the BSC / RNC sends a handover request message.

该步骤中,MSC/VLR选择的BSC/RNC实际为IWF。 In this step, MSC / VLR selected BSC / RNC actually IWF.

步骤1105、 IWF模拟BSC/RNC收到MSC/VLR发送的切换请求消息后, 通过DNS解析机制找到目的MME的IP地址,向目的MME发送转发切换请求消息。 Step 1105, IWF analog BSC / RNC receiving the handover MSC / VLR transmits the request message, the MME finds the destination IP address by DNS resolution mechanism, forwards the handover request message transmitted to the destination MME.

步骤1106、 MME根据从SGSN和MSC/VLR (实际为从IWF处收到) 收到的切换消息,执行目的侧资源准备处理。 Step 1106, MME and SGSN according to the MSC / VLR (actually received from the IWF) handover message is received, the destination side performs preparation processing resources.

该步骤中PS业务和CS业务的资源准备是单独处理还是一起处理,本实施例不^L限定。 This step CS service and PS service resource preparation process or separately treated together, this embodiment is not limiting examples ^ L. 该流程为现有流程,此处不再赘述。 The process for the existing process, not repeat them here.

步骤1107、 MME完成PS业务的目的侧资源准备处理后,则向SGSN 发送转发切换请求响应消息。 Step 1107, after completion of the PS service MME object-side resource preparation process, the SGSN sends a forward handover request response message.

步骤1108、当MME完成CS业务的目的侧资源准备处理后,则向IWF 发送转发切换请求响应消息。 Step 1108, when the CS service MME complete resource preparation process object side, the transmission forwards the handover request response message to the IWF.

步骤1109、 IWF收到MME的转发切换请求响应消息后,模拟BSC/RNC 向MSC/VLR发送切换响应消息。 Step 1109, IWF after receiving the MME forwards the handover request response message, the analog BSC / RNC sends a handover response message to the MSC / VLR.

步骤1110、 SGSN向RNC/BSC发送切换命令消息。 Step 1110, SGSN transmits to the RNC / BSC handover command message.

步骤1111、 MSC/VLR向RNC/BSC发送切换命令消息。 Step 1111, MSC / VLR transmits to the RNC / BSC handover command message.

步骤1112、 RNC/BSC收到SGSN和MSC/VLR发送的切换命令消息后, 向UE发送切换命令。 Step 1112, RNC / BSC and SGSN receiving the handover MSC / VLR sending the message command, transmits a handover command to the UE.

步骤iin、 UE执行切换处理,和目的侧网络一起完成后续切换处理。 Step iin, UE performs handover processing, and the target side processing network with the subsequent handover is completed.

在图ll所述的方法中,为了保证选择同一个MME,步骤1103和步骤1105中,SGSN和IWF可以采用实施例——实施例四中任一的方法进行处理。 In the method according to FIG. Ll in order to ensure the same select the MME, step 1103 and step 1105, the IWF and the SGSN embodiments may be employed - for processing method according to a fourth embodiment of any one. 即进行DNS解析的FQDN中可以包括用户的相关信息,如IMSI信息(实施例一)、MSISDN信息(实施例二)等;也可以包括SGSN设备编号和IWF设备的编号信息(与实施例三类似);还可以采用源端RNC/BSC的编号信息(实施例四)。 FQDN i.e. DNS resolution may include information about the user, such as the IMSI information (first embodiment), the MSISDN information (second embodiment) or the like; may also comprise ID information SGSN device number and IWF device (similar to the third embodiment ); can also be employed source RNC / BSC of the number information (fourth embodiment) end. 处理方法与上述类似,本实施例中不再赘述。 Processing method similar to the above embodiment of the present embodiment will not be repeated.

本实施例中认为IWF和MME分离并不意味着IWF和MME是两个完全独立的网元,IWF和MME也可以作为一个物理网元的两个部分,IWF可以采用本实施例中的方法来选择MME,如果选择的MME是和IWF合一的MME,则直接处理,否则将切换消息转发给选择的目的MME。 In this embodiment the separation that MME and the IWF IWF and the MME is not meant to completely separate the two network elements, IWF and the MME can also be used as a part of two physical network element, IWF method of the present embodiment may be employed selected MME, the MME is selected if the IWF and the MME unity, then the process directly, or handover message to the target MME selection.

图12为本发明实施例五提供的切换到EPS网络的方法三流程图,步骤1204中IWF收到MSC/VLR的切换请求消息后,进行DNS解析选择目的MME, DNS解析的FQDN可以采用实施例——实施例四所述的方法。 FIG 12 a flow chart of the present invention, three switching method according to a fifth embodiment of the EPS network, the IWF receives the handover in step 1204 the MSC / VLR request message, the MME DNS resolution selection purposes, DNS resolution of the embodiments may be utilized FQDN - the method described in the fourth embodiment. 当选择的目的MME不是与IWF合一的MME,则执行步骤1205向该MME转发该切换请求,并且当该目的MME完成切换资源准备后,还需要执行步骤1208向该IWF回响应消息;当选择的目的MME就是与IWF合一的MME, 则步骤1205和步骤1208不需要执行,采用实施例——实施例四所述的FQDN方法,步骤1203中SGSN也会选择该和IWF合一的MME。 When the selected target MME and the IWF is not unity MME, the MME performs step 1205 to forward the handover request, and when the target MME handover resource preparation is completed, step 1208 is performed to the required IWF back a response message; when selecting the target MME is the MME and the IWF unity, then step 1205 and step 1208 need not be performed, the Example - FQDN method of Example IV to the embodiment, in step 1203 the SGSN will select and IWF unity MME. 切换流程和实施例——实施例四类似。 Example handover procedure - Four similar embodiments.

实施例六 Sixth Embodiment

当IWF作为MME的一个功能模块时,MME向MSC/VLR提供A/Iu-cs 接口,向SGSN提供Iu-ps接口和S3接口, IWF和MME之间的S10,为内部接口。 When the IWF as a functional module of the MME, the MME provides MSC / VLR A / Iu-cs interface provided between S10 and S3 interfaces Iu-ps interface to the IWF the SGSN and MME, the internal interface. 此时,与实施例五不同的是,IWF不会再执行选择MME的步骤, 即不会发生图12所示的流程处理。 In this case, according to the fifth embodiment except that, without the IWF selection steps were performed in the MME, i.e. the flow of processing shown in FIG. 12 does not occur. 因为选择MME和选择IWF等同。 Because the IWF selects an MME selection and equivalents.

在该场景下,对于CS业务,MSC/VLR根据BSC/RNC提供的切换要求消息中的Target ID查询MSC/VLR中的系统配置表,得到MME (IWF )的七号信令网信令点编码,^v而找到该MME。 In this scenario, for a CS service, MSC / VLR in accordance with the switching BSC / RNC provides the system configuration table Target ID query message in MSC / VLR is required to obtain SS7 network point code MME (IWF) of , ^ v and find the MME.

而由于SGSN可以通过Iu-ps接口和S3接口连接到MME,因此对于PS 业务,也可以从这两个接口进行切换。 Since the SGSN may be connected to the MME via S3 interface and the Iu-ps interface for PS traffic and therefore, may be switched from the two interfaces. 当SGSN通过Iu-ps接口进行切换处理时,处理才几制和MSC/VLR类似, SGSN根据BSC/RNC提供的Target ID查询SGSN中的系统配置表,得到MME (IWF)的七号信令网信令点编码,从而找到该MME。 When the SGSN handover process by the Iu-ps interface to process only a few braking and MSC / VLR Similarly, according to Target ID SGSN queries SGSN BSC / RNC provides the system configuration table, to give MME (IWF) of the SS7 network signaling point codes, to find the MME. 此时,为了保证PS业务和CS业务选择同一个MME,则要求MSC/VLR和SGSN中对于相同Target ID配置相同的MME信令点编码。 In this case, in order to ensure the CS service and the PS service with a selected MME, it requires MSC / VLR and SGSN for the same Target ID MME configuration same signaling point code.

当SGSN通过S3接口进行切换处理时,SGSN根据BSC/RNC提供的其他还要求消息中的Target ID组装成FQDN进行DNS解析找到目的MME的IP地址,并向目的MME发送转发切换请求消息。 When the SGSN via S3 interface handover process, according to the SGSN BSC / RNC also provides other requirements Target ID message is assembled into a FQDN for DNS resolution to find the IP address of the target MME, and the target MME forwards the handover request message sent. 该处理流程中,SGSN可以采用实施例一~实施例四类似的方法来组装FQDN。 In the processing flow, SGSN may be employed a ~ Examples FQDN assembly embodiment similar to the method according to a fourth embodiment. 即进行DNS解析的FQDN中可以包括用户的相关信息,如IMSI(实施例一)、MSISDN (实施例二)等;也可以包括SGSN设备编号信息(实施例三);还可以采用源端RNC/BSC的编号信息(实施例四),但是,需要保证和MSC/VLR采用的查询系统配置表的方式得到的选择MME —致。 FQDN i.e. DNS resolution may include information about the user, such as the IMSI (first embodiment), the MSISDN (the second embodiment) and the like; may also include a SGSN device number information (third embodiment); can also be employed source RNC / BSC number information (fourth embodiment), however, necessary to ensure selection and MSC / query system configuration table using the obtained VLR manner MME - induced.

本发明实施例还提供一种切换到EPS网络的系统,如图13所示,该系统包括:为UE提供PS业务的网络实体、为UE提供CS业务的网络实体以及MME,其中, Embodiments of the invention further provides a system to switch to the EPS network, as shown in FIG. 13, the system comprising: a network entity providing PS services for the UE, the network entity provides the UE and the MME CS service, wherein

所述为UE提供PS业务的网络实体,用于采用所设置的方式为UE选择在EPS网络中提供PS业务的MME,将UE的PS业务切换到该MME上; The PS service for the UE to provide a network entity, for employing the UE selects a set way to provide PS services in the EPS network to the MME, the UE a PS service handover to the MME;

所述为UE提供CS业务的网络实体,用于采用所设置的方式为UE选择在EPS网络中提供CS业务的MME,将UE的CS业务切换到该MME上, 该MME和所选择的为UE提供PS业务的MME相同。 The service provided for the UE CS network entity, for employing a set way to provide CS services to the UE selects the MME in an EPS network, the CS service of the UE to the MME handover, the MME and the UE selected PS offers the same service MME.

在该实施例中,所述为UE提供PS业务的网络实体可以为SGSN或IWF;所述为UE提供CS业务的网络实体可以为MSC/VLR或IWF。 In this embodiment, the PS service provided for the UE or a network entity may be the IWF SGSN; CS providing the service for the UE may be a network entity MSC / VLR or IWF.

本发明实施例还提供一种切换到EPS网络的装置,如图14所示,该装置包括:选择模块和切换模块,其中, Embodiments of the invention further provides a switching device to the EPS network, as shown in FIG. 14, the apparatus comprising: a selection module and a switching module, wherein

选择模块,用于采用所设置的方式为UE选择在EPS网络中提供PS业务的MME,所选择的MME和为UE在EPS网络中提供CS服务的MME相同,或者采用所设置的方式为UE选择在EPS网络中提供CS业务的MME, 所选择的MME和为UE在EPS网络中提供PS服务的MME相同; A selection module for employing a set way selected for the UE to provide PS services in the EPS network MME, the MME and the UE selected to provide CS services in an EPS network, the same MME or provided by way selected for the UE providing CS services in an EPS network MME, the MME and the UE selected to provide PS services in the EPS network MME same;

切换模块,用于将UE的PS业务切换到所选择的MME;或者将UE的CS业务切换到所选择的MME上。 Switching means for switching the PS service of the UE to the MME selected; or CS service of the UE is switched to the selected MME.

在该实施例中,所述装置可以为MSC/VLR、或SGSN或IWF。 In this embodiment, the device may be a MSC / VLR, SGSN or or IWF. 釆用本发明实施例提供的方法、系统及装置,当UE在GPRS/UMTS网络中同时存在PS业务和CS业务,如果需要切换到EPS网络时,MSC/VLR 和SGSN能选择相同的服务控制节点MME,从而保证后续业务的顺利开展; 在选择MME的过程中还能保证MME的负荷分担处理,避免网络边界处的MME负荷过重。 Bian method provided, the system and apparatus of the present invention, when a UE is present PS services and CS services while GPRS / UMTS network, if the need to switch to the EPS network, MSC / VLR and SGSN can choose the same service control node MME, so as to ensure the smooth follow-up operations; the selection process but also to ensure the MME MME share the processing load, to avoid overloading the network MME boundary.

以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所做的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。 The above are only preferred embodiments of the present invention but are not intended to limit the present invention, where any modifications within the spirit and principle of the present invention, equivalent substitutions and improvements should be included in the present invention. within the scope of protection.

Claims (10)

  1. 1、一种切换到演进的分组系统EPS网络的方法,其特征在于,该方法包括:用户设备UE的分组域PS业务和电路域CS业务切换到EPS网络时,为UE提供CS业务的网络实体和提供PS业务的网络实体分别采用相同的设置方式,根据UE相关信息将UE的CS业务和PS业务分别切换到EPS中的同一移动管理实体MME上。 1. A method for a packet switching system to the EPS network evolution, wherein the method comprises: the user equipment UE and the PS service domain of a packet CS service domain a circuit switched network to the EPS, the UE provides CS services to network entity and PS service network entity providing the same arrangement, respectively, are switched to the same mobility management entity MME EPS according to a CS service and the PS service of the UE information of the UE.
  2. 2、 如权利要求1所述的方法,其特征在于,所述设置方式为域名服务器DNS解析方式,过程为:为ue提供cs业务的网络实体和提供ps业务的网络实体分别根据ue相关信息,构造相同的全域名FQDN发送给DNS,接收DNS返回的根据FQDN所选择的相同MME。 2. The method as claimed in claim 1, characterized in that the arrangement is a domain name server DNS resolution mode, the process of: providing a service to ue cs network entity and the network service entity ps respectively according to relevant information ue, the same configuration to a fully qualified domain name FQDN DNS, the receiving DNS returns the MME according to the same FQDN selected.
  3. 3 、如权利要求2所述的方法,其特征在于,所述为UE提供CS业务的网络实体和提供ps业务的网络实体分别为ue所属的移动业务交换中心/访问者位置寄存器MSC/VLR和UE所属的服务网关支持节点SGSN;或者所述为UE提供CS业务的网络实体和提供PS业务的网络实体分别为UE所属的MSC/VLR采用查询系统配置表方式选择的语音交互功能IWF和UE所属的SGSN采用查询系统配置表方式选择的IWF;或者所述为UE提供CS业务的网络实体和提供PS业务的网络实体分别为UE所属的MSC/VLR采用查询系统配置表方式选择的IWF和UE所属的SGSN。 3. The method as claimed in claim 2, wherein the CS network entity providing services and provides network service entity ps respectively belong ue mobile services switching center / visitor location register MSC / VLR and the UE service gateway support node of the SGSN which the UE belongs; or CS providing the service for the UE and a network entity PS service network entities MSC respectively belong UE / VLR query system configuration table using the selected voice mode interworking function IWF and the UE belongs IWF SGSN queries the system configuration table using a selected mode; CS or to provide the service for the UE and a network entity of the network entities as the PS service the UE belongs are MSC / VLR query system configuration table using the selected mode and the UE belongs IWF the SGSN.
  4. 4、 如权利要求1、 2或3所述的方法,其特征在于,所述的UE相关信息为UE的国际移动系统标识符IMSI信息、UE的移动台综合业务^t字网MSISDN信息、为UE提供CS业务的网络实体的设备编号信息和为UE提供PS业务的网络实体的设备编号信息、或UE所属的无线网络控制器/基站控制器RNC/BSC的标识ID信息。 4. The method of claim 1, 2 or 3, wherein said information related to the UE IMSI International Mobile System Identifier information of the UE, the mobile station UE, ^ t Integrated Services Digital Network MSISDN information for the device ID information and device ID information PS network entity providing service to UE provides UE CS network service entity, or belongs to a radio network controller UE / base station controller RNC / BSC identification ID information.
  5. 5. 如权利要求l所述的方法,其特征在于,所述设置方式为查询系统配置表方式,过程为:为UE提供CS业务的网络实体和提供PS业务的网络实体分别根据UE相关信息分别查询自身设置的系统配置表,得到所选择的相同的MME。 UE-related information are provided CS service network entity for the UE and the network entity, respectively, according to the PS service: 5. The method according to claim l, characterized in that the arrangement is a system configuration table query mode, the process is query system configuration table set itself to obtain the same selected MME.
  6. 6、 如权利要求5所述的方法,其特征在于,所述MME设置有IWF,所述为UE提供CS业务的网络实体和提供PS业务的网络实体分别为UE所属的MSC/VLR和UE所属的SGSN。 Network entity and the network entity 6 PS service method as claimed in claim 5, characterized in that, the IWF is provided with the MME, to provide the CS service for the UE for the UE belongs are MSC / VLR and the UE belongs the SGSN.
  7. 7、 一种移动通信系统,其特征在于,该系统包括:为UE提供PS业务的网络实体、为UE提供CS服务的网络实体以及MME,其中,所述为UE提供PS业务的网络实体,用于采用所设置的方式为UE选择在EPS网络中提供PS业务的MME,将UE的PS业务切换到该MME上;所述为UE提供CS业务的网络实体,用于采用所设置的方式为UE选择在EPS网络中提供CS业务的MME,将UE的CS业务切换到该MME上, 该MME和所选4奪的为UE提供PS业务的MME相同。 7, a mobile communication system, characterized in that the system comprising: providing PS services network entity for the UE, the UE and MME CS network entity provides services, wherein the network entity providing PS services for the UE, with in a set way to use the UE selects provide PS services in the EPS network, the MME, of the UE to the PS service handover the MME; CS providing the service for the UE network entity, for employing a set way to UE choose to provide CS services in an EPS network, MME, of the UE to CS services switching the MME, to provide the same service as the PS UE. 4 wins the MME and the selected MME.
  8. 8、 如权利要求7所述的系统,其特征在于,所述为UE提供PS业务的网络实体为SGSN或IWF;所述为UE提供CS业务的网络实体为MSC/VLR 或IWF。 8. The system as claimed in claim 7, wherein said providing network entity for PS service to IWF SGSN or the UE; CS network entity providing the service to MSC / VLR IWF or to UE.
  9. 9、 一种移动通信装置,其特征在于,该装置包括:选择模块和切换模块,其中,选择模块,用于采用所设置的方式为UE选择在EPS网络中提供PS业务的MME,所选择的MME和为UE在EPS网络中提供CS服务的MME相同,或者采用所设置的方式为UE选择在EPS网络中提供CS业务的MME, 所选择的MME和为UE在EPS网络中提供PS服务的MME相同;切换模块,用于将UE的PS业务切换到所选择的MME;或者将UE的CS业务切换到所选择的MME上。 9. A mobile communication device, wherein, the apparatus comprising: a selection module and a switching module, wherein the selection module is configured to use the set mode to the UE selects provide PS services in the EPS network, the MME, the selected MME and the UE providing CS services in an EPS network MME same, or by way provided the UE selects provide CS services in an EPS network, the MME, the selected MME, and the MME UE provides PS services in the EPS network the same; and a switching means for switching the PS service of the UE to the MME selected; or CS service of the UE is switched to the selected MME.
  10. 10、 如权利要求9所述的装置,其特征在于,所述装置为MSC/VLR、 或SGSN或IWF 。 10. The apparatus of claim 9, wherein the device is a MSC / VLR, SGSN or or IWF.
CN 200710302302 2007-12-18 2007-12-18 Method, system and device for switching to developmental packet system network CN101466122B (en)

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CN103096392A (en) * 2011-11-04 2013-05-08 中兴通讯股份有限公司 Reverse single radio voice call continuity bearer switching method and device
CN103096392B (en) * 2011-11-04 2018-07-20 中兴通讯股份有限公司 Reverse single species to be switched bearer service continuity apparatus and method
CN102547676A (en) * 2012-01-06 2012-07-04 大唐移动通信设备有限公司 Method and device for acquisition of IP (Internet Protocol) address of target network element and system switching
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CN104221429A (en) * 2012-04-17 2014-12-17 瑞典爱立信有限公司 Srvcc handover of calls between access networks with active codec selection
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