CN102598786A - Switching method between base stations, base stations and communication system - Google Patents

Switching method between base stations, base stations and communication system Download PDF

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CN102598786A
CN102598786A CN 201180002622 CN201180002622A CN102598786A CN 102598786 A CN102598786 A CN 102598786A CN 201180002622 CN201180002622 CN 201180002622 CN 201180002622 A CN201180002622 A CN 201180002622A CN 102598786 A CN102598786 A CN 102598786A
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base station
mme
link
target base
source
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CN 201180002622
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Chinese (zh)
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CN102598786B (en )
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李婧媛
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission and use of information for re-establishing the radio link

Abstract

This invention provides a switching method between base stations, base stations and a communication system. The method includes: sending switching-request information from a source base station to a target base station to switch user equipments to which the said source base stations provides service to cells of the target base stations. According to S1 link state information among the target base stations and a mobile management entity which provides service to the source base stations and has the UE residing in, the source base stations confirm and perform either X2 link switching or S1 link switching. This invention also provides a base station and a communication system. This invention can select the most suitable switching method between X2 link switching and S1 link switching to successfully switch source eNBs to target eNBs.

Description

基站间的切换方法、基站、和通讯系统 The method of handover between base stations, base stations, communications system, and

技术领域 FIELD

[0001] 本发明实施例涉及移动通信技术领域,尤其涉及一种用于实现基站间切换的技术方案。 Example relates to mobile communication technical field [0001] The present invention particularly relates to the technical solution for realizing a handover between base stations.

背景技术 Background technique

[0002] 3GPP长期演进(Long Term Evolution,以下简称LTE)系统是非常有前景的移动通信系统,它源于传统的通用移动通信系统(Universal Mobile TelecommunicationsSystem, UMTS)网络,能够提供更高的无线接入速率和更好的业务支持。 [0002] 3GPP long term evolution (Long Term Evolution, hereinafter referred to as LTE) system is a very promising mobile communication system, which originated from the conventional universal mobile telecommunications system (Universal Mobile TelecommunicationsSystem, UMTS) network, can provide a higher wireless access the rate and better business support.

[0003] 以LTE系统为例,其采用扁平的无线接入网(feidio Access Network,简称RAN)结构,取消了无线网络控制器(Radio Network Control,简称RNC)。 [0003] In the LTE system as an example, which employs a flat radio access network (feidio Access Network, abbreviated RAN) structure, eliminating a radio network controller (Radio Network Control, abbreviated RNC). 如图1所示,LTE系统包括演进基站(evolved-NodeB,简称eNB)和演进型分组核心网(Evolved Packer CoreNetwork,简称EPC)构成。 As shown, LTE system includes an evolved base station (evolved-NodeB, referred to as eNB) and an evolved packet core network (Evolved Packer CoreNetwork, referred to as EPC) configuration. eNB之间通过X2接口相连接,eNB和EPC之间通过Sl接口相连接。 Is connected between the eNB through an X2 interface, is connected via an interface Sl between eNB and EPC. EPC包括移动管理实体(Mobility Management Entity,简称MME)及系统架构演进网关(SAE (iateWay,简称SGW)。例如,MME作为控制面部分,负责控制面的移动性管理,包括用户上下文和移动状态管理,分配用户临时身份标识等。eNB与MME之间通过Sl接口的代理(proxy)功能,实现eNB与MME间控制面信令的传递。又如,SGW作为用户面部分,负责空闲状态下为下行数据发起寻呼,管理保存因特网协议(Internet Protocol,简称IP)承载参数和网络内路由信息等。eNB与SGW之间通过Sl接口的代理(proxy)功能,实现eNB与SGW间用户面信令的传递。 The EPC includes a mobility management entity (Mobility Management Entity, referred to as MME) and system architecture evolution gateway (SAE (iateWay, referred SGW). For example, the MME as a control plane part, responsible for controlling the surface mobility management, including user context and mobility status management , partitioned between temporary user identity and the like .eNB MME (proxy) function through the proxy Sl interface to accomplish the transfer of control plane signaling between the eNB and the MME. in another example, the SGW a user plane part, responsible for the downlink idle state initiates paging data, storage management Internet protocol (Internet protocol, abbreviated IP) bearer parameters and internal network routing information between the SGW and the like .eNB Sl by proxy (proxy) interface function, to achieve inter-eNB and the SGW user plane signaling transfer.

[0004] 在无线通讯系统中,切换是保持业务连续性的基本特性,通过提高切换成功率,可以保证终端的业务连续性。 [0004] In a wireless communication system, the handover is a basic characteristic of the business continuity by increasing the handover success rate can ensure continuity of service of the terminal. 所谓切换,是指当终端在通话过程中从一个eNB下的小区移动到另一个eNB下的小区,或者由于外界干扰而造成终端通话质量下降时,需要改变终端原有的话音信道而转接到一条新的空闲话音信道上,以继续保持通话的过程。 The so-called switching means moves to another eNB in ​​the cell when the cell during a call from the terminal a of the eNB, or due to outside interference caused by the terminal when call quality drops, the terminal needs to change the original voice channel and switch to a new idle voice channel in order to maintain during a call.

[0005] 在基于LTE技术的无线通讯系统中,上述切换可以分为eNB与EPC间的Sl链路切换、和eNB间的X2链路切换。 [0005] In a wireless communication system based on LTE technology, the switching can be divided Sl link between the eNB and EPC handover and X2 link between eNB handover. 发起切换的eNB可以称为源eNB,接收切换请求的eNB可以称为目标eNB。 eNB initiates handover source eNB may be referred to eNB, receiving the handover request may be called a target eNB.

[0006] 目前,业界期盼一种eNB间的切换方法,当源eNB向目标eNB发起切换请求时,能够在X2链路切换和Sl链路切换中选择适合的切换方法,以成功进行源eNB向目标eNB的切换。 [0006] Currently, the industry is looking forward to a method of switching between the eNB, when the source eNB initiates a handover request to the target eNB, and can switch Sl select the appropriate link handover in the X2 link switching method, in order to successfully carry out the source eNB switching to the target eNB.

发明内容 SUMMARY

[0007] 本发明实施例提供一种基站间的切换方法、基站、和通讯系统,用于解决如何在X2链路切换和Si链路切换中选择合适切换方法的问题。 Example [0007] The present invention provides a handover method between a base station, and a communication system for solving the link and how to switch Si X2 handover link switching method select the appropriate question.

[0008] 本发明的一方面提供一种基站间的切换方法,包括: [0008] In one aspect the present invention provides a method for switching between a base station, comprising:

[0009] 源基站向目标基站发送切换请求消息,用于将所述源基站提供服务的用户设备User Equipment (UE)切换至所述目标基站下的小区中;[0010] 所述源基站根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,确认进行X2链路切换或Sl链路切换。 [0009] The source base station transmits a request message to the handover target base station, a user equipment User Equipment (UE) to the source base station to a serving cell of the handover target base station; [0010] The source base station according to the said target base station, the source base station and serving Sl and link state information between a mobile management entity resides mobile management entity (MME) said the UE, a link confirm X2 handover or handover link Sl.

[0011] 本发明的又一方面提供一种基站间的切换方法,包括: [0011] In yet another aspect the present invention provides a method for switching between a base station, comprising:

[0012] 目标基站接收源基站发送的切换请求消息,用于将所述源基站提供服务的用户设备化6『Equipment (UE)切换至所述目标基站下的小区中; [0012] The target base station receives the handover source base station sends a request message for user equipment of the base station serving the source 6 "Equipment (UE) to a cell of the handover target base station;

[0013] 所述目标基站向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,用于所述源基站确认进行X2链路切换或Sl链路切换。 [0013] The target base station sends the target base station to the source base station and the source base station serving the UE Sl and link state information between a mobile management entity resides Mobile Management Entity (MME), with the source base station to confirm handover or X2 link link switch Sl.

[0014] 本发明的另一方面提供一种基站,包括: [0014] In another aspect the present invention provides a base station, comprising:

[0015] 发送单元,用于向目标基站发送切换请求消息,以便将所述基站提供服务的用户设备her Equipment (UE)切换至所述目标基站下的小区中; The user equipment her [0015] transmitting means for transmitting the handover request message to a target base station, to the base station serving Equipment (UE) to a cell of the handover target base station;

[0016] 处理单元,用于根据所述目标基站、与服务于所述基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,确认进行X2链路切换或Sl链路切换。 [0016] The processing unit, according to the target base station, and the base station serving the UE Sl and link state information between a mobile management entity resides Mobile Management Entity (MME), an X2 link handover confirm or link switch Sl.

[0017] 本发明的再一方面提供一种基站,包括: [0017] another aspect of the invention provides a base station, comprising:

[0018] 接收单元,用于接收源基站发送的切换请求消息,以便将所述源基站提供服务的用户设备her Equipment (UE)切换至所述基站下的小区中; The user equipment her [0018] receiving means for receiving a handover request message sent by the source base station, the source base station to the serving Equipment (UE) to switch to a cell of the base station;

[0019] 发送单元,用于向所述源基站发送所述基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,以便所述源基站确认进行X2链路切换或Sl链路切换。 [0019] transmitting means for transmitting the base station to the source base station, and link state information service Sl between mobility management entity resides Mobile Management Entity (MME) to the UE and the source base station, so that the source base station handover or X2 link confirm link switch Sl.

[0020] 本发明的再一方面提供一种通讯系统,包括: [0020] another aspect of the present invention provides a communication system, comprising:

[0021] 一源基站、及一目标基站; [0021] a source base station and a target base station;

[0022] 所述源基站,用于向目标基站发送切换请求消息,以便将所述基站提供服务的用户设备her Equipment(UE)切换至所述目标基站下的小区中;及根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,进行X2链路切换或Sl链路切换; The user equipment her Equipment (UE) [0022] The source base station, a request message to the target base station sends a handover, to the handover to a base station serving a cell in the target base station; and a base station according to the target , and between the serving mobility management of the UE and the source base station entity resides mobile management entity (MME) in the Sl link state information for the X2 link or handover link switch Sl;

[0023] 所述目标基站,用于接收源基站发送的切换请求消息;及向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息。 [0023] the target base station, for receiving a handover request message sent by the source base station; and the source base station transmits to the target base station and the source base station serving the UE Sl and chain residing between MME road status information.

[0024] 本发明的基站间的切换方法、基站、和通讯系统,用于保证在X2链路切换和Sl链路切换中选择适合的切换方法,以成功进行源eNB向目标eNB的切换,实现终端自源eNB下的小区切换至目标eNB下的小区。 [0024] The method of handover between base stations according to the present invention, a base station, and communication system to ensure appropriate selection of the X2 and Sl link switch link switching method for switching to the handover source eNB to the target eNB successfully achieve the terminal from the source cell to cell in the eNB handover at the target eNB.

附图说明 BRIEF DESCRIPTION

[0025] 图1为现有技术中LTE系统的架构示意图; [0025] FIG. 1 is a schematic diagram of the architecture of an LTE system in the prior art;

[0026] 图2为本发明一实施例的基站间的切换方法的流程图; [0026] FIG 2 is a flowchart of inter-base station handover method according to an embodiment of the present invention;

[0027] 图3为本发明另一实施例的基站间的切换方法的流程图; [0027] FIG. 3 is a flowchart of a handover method between a base station according to another embodiment of the present invention;

[0028] 图4为本发明另一实施例的基站间的切换方法的流程图; [0028] FIG 4 is a flowchart of inter-base station handover method according to another embodiment of the present invention;

[0029] 图5为本发明另一实施例的基站间的切换方法的流程图;[0030] 图6为本发明另一实施例的基站结构示意图; [0029] FIG 5 is a flowchart of inter base station handover method according to another embodiment of the present invention; [0030] FIG. 6 is a schematic structure of a base station according to another embodiment of the present invention;

[0031] 图7为本发明另一实施例的基站结构示意图。 [0031] FIG. 7 is a schematic structure of a base station according to another embodiment of the present invention.

具体实施方式 Detailed ways

[0032] 为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。 [0032] In order that the invention object, technical solutions, and advantages of the embodiments more clearly, the following the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described the embodiment is an embodiment of the present invention is a part, but not all embodiments. 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without creative efforts shall fall within the scope of the present invention.

[0033] 本领域技术人员可以理解附图只是一个优选实施例的示意图,附图中的模块或流程并不一定是实施本发明所必须的。 [0033] Those skilled in the art will be appreciated the drawings are merely schematic diagram of a preferred embodiment, the modules or processes in the accompanying drawings are not necessarily embodiments of the present invention it is necessary.

[0034] 本文中结合终端和/或基站来描述各种方面。 [0034] As used herein in connection with a terminal and / or base station to describe various aspects.

[0035] 终端,指的是向用户提供语音和/或数据连通性的设备,包括无线终端或有线终端。 [0035] The terminal refers to a device providing voice and / or data connectivity to a user device, comprising a wired terminal or a wireless terminal. 无线终端可以是具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备,经无线接入网(feidio Access Network,简称RAN)与一个或多个核心网进行通信的移动终端。 The wireless terminal may be a handheld device having wireless connection capability, or other processing device connected to a wireless modem, a mobile terminal in communication with one or more core networks via a radio access network (feidio Access Network, abbreviated RAN). 例如,无线终端可以是移动电话(或称为“蜂窝”电话)和具有移动终端的计算机。 For example, the wireless terminal may be a mobile phone (or "cellular" telephone) and a computer having a mobile terminal. 又如,无线终端也可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。 As another example, the wireless terminal may be a portable, pocket, handheld, computer-included, or car-mounted mobile devices. 再如,无线终端还可以是个人通信业务(Personal Communication Service,简称PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol,简称SIP)话机、无线本地环路(Wireless Local Loop,简称WLL)站、个人数字助理(Personal Digital Assistant,简称PDA)等设备。 Again, the wireless terminal can also be a personal communication service (Personal Communication Service, referred to as PCS) phone, a cordless telephone, a Session Initiation Protocol (Session Initiated Protocol, referred to as SIP) phone, a wireless local loop (Wireless Local Loop, referred WLL) station , a personal digital assistant (personal digital Assistant, referred to as PDA) and other equipment. 再如,无线终端也可以称为系统、订户单元(Subscriber Unit)、订户立占(Subscriber Station), ^ (Mobile Station) (Mobile)、@禾呈立占(RemoteStation)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(AccessTerminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device)、或用户装备(User Equipment,简称UE)。 Again, the wireless terminal may also be called a system, subscriber unit (Subscriber Unit), representing subscriber Li (Subscriber Station), ^ (Mobile Station) (Mobile), @ Wo was established account (RemoteStation), an access point (Access Point ), a remote terminal (remote terminal), an access terminal (AccessTerminal), a user terminal (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment, abbreviated UE).

[0036] 基站,指的是指接入网中在空中接口上通过一个或多个小区与无线终端通信的设备。 [0036] base station, refers to a cell refers to a device in communication with the radio access network terminal over an air interface by one or more. 基站可用于将收到的空中帧与网际协议(Internel Protocol,简称IP)分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括IP网络。 The base station may be used with the air frame will receive an Internet Protocol (Internel Protocol, abbreviated IP) packet conversion, as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network may include an IP network . 基站还可协调空中接口的属性管理。 The base station also coordinates management of attributes air interface. 例如,基站可以是GSM或CDMA中的基站(BaseTransceiver Mation,简称BTS),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(evolutional Node B,简称NodeB或eNB或e_NodeB),本发明对此并不做限定。 For example, the base station may be a GSM or CDMA base station (BaseTransceiver Mation, referred to as the BTS), may be a WCDMA base station (NodeB), may also be in LTE eNB (evolutional Node B, referred to as NodeB or eNB or e_NodeB ), this does not restrict the present invention.

[0037] 另外,本文中术语“系统”和“网络”在本文中常被可互换使用。 [0037] Further, the terms "system" and "network" are often used interchangeably herein. 本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,存在A和B,单独存在B这三种情况。 The term "and / or" merely describe a relationship of associated objects representing three relationships may exist, for example, A and / or B, may be expressed: A exists alone, the presence of A and B, B exists alone three cases. 另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。 Further, the character "/", represents the general context-objects is a "or" relationship.

[0038] 本发明的不同实施例,X2链路切换指的是不涉及EPC重定位的移动性管理。 [0038] The various embodiments of the present invention, X2 link switching means does not involve relocation EPC mobility management. 例如,当UE在一个MME群组中移动或切换在同一个MME内执行时,切换过程不涉及MME及SGW,由源基站直接与目标基站通过X2接口进行交互,进行X2链路切换。 For example, when the UE moves or when performing handover within the same MME MME in a group, the handover procedure does not involve the SGW and the MME, the source base station and the target base station through an X2 interface interacts directly performs X2 handover link. Sl链路切换指的是涉及EPC重定位的移动性管理。 Sl link switching means is relocated EPC relates to mobility management. 当UE在两个MME群组中移动时,或源基站和目标基站间没有X2接口,又或者目标基站与服务于源基站且UE驻留的MME间没有Sl接口时,需要执行MME重定位,进行Sl链路切换。 When the UE moves MME two groups, between the source and target base stations or no X2 interface, or the target base station and the serving base station and the source when no Sl interface between the need to perform MME relocation MME UE resides, for link switch Sl.

[0039] 其中,X2链路的切换过程,包括: [0039] wherein X2 link handover process, comprising:

[0040] 201 =UE向源基站上报测量报告。 [0040] 201 = UE reports a measurement report to the source base station.

[0041] 202 :源基站向目标基站发送X2链路切换请求消息。 [0041] 202: The source base station sends an X2 link handover request message to the target base station.

[0042] 上述X2链路切换请求消息中包括目标基站为切换准备资源所必须的信息,如UE在源基站中的信令上下文参考信息、UE的Sl信令上下文参考信息、目标小区的标识等。 [0042] The link X2 handover request message comprises target base station information necessary to prepare resources for the handover, the source base station as the UE signaling context references, Sl signaling to the UE context information of the reference, identification of the target cell, etc. .

[0043] 203 :目标基站向源基站发送X2链路切换请求确认消息。 [0043] 203: The target base station sends an X2 link handover request acknowledgment message to the source base station.

[0044] 204 :源基站向目标基站发送序列号状态信息,实现源基站和目标基站的同步。 [0044] 204: The source base station sends the sequence number status information to a target base station, to achieve synchronization of the source and target base stations.

[0045] 205 :源基站向UE发送无线资源控制(fcidio Resource Control,简称RRC)连接重配置消息。 [0045] 205: The source base station transmits a radio resource control to the UE (fcidio Resource Control, abbreviated RRC) connection reconfiguration message.

[0046] 206 =UE向目标基站发送RRC连接重配置完成消息。 [0046] 206 = UE sends an RRC Connection Reconfiguration Complete message to the target base station.

[0047] 207 :目标基站向MME发送路径切换请求消息(Path Switch Request)。 [0047] 207: The target base station to the MME sends a path switch request message (Path Switch Request).

[0048] 上述路径切换请求中携带目标基站向MME请求获取UE用户信息的指示。 [0048] The path switching instruction request to the MME carries the target base station UE acquires the user information request.

[0049] 208 =MME向目标基站发送路径切换确认消息(Path Switch Acknowledge)。 [0049] 208 = MME handover to the target base station sends a path acknowledgment message (Path Switch Acknowledge).

[0050] 上述路径切换确认消息中携带UE的用户信息。 [0050] The path switch acknowledgment message carries the user information of the UE.

[0051] 209 :目标基站向源基站发送释放UE上下文消息。 [0051] 209: The target base station sends the UE context release message to the source base station.

[0052] 在正常的X2链路切换过程中,MME向目标基站发送的路径切换确认消息中携带UE的用户信息,随后,目标基站向源基站发送释放UE上下文消息,通知源基站X2链路切换已经顺利完成,可以释放原先占用的资源。 [0052] In a normal link X2 handover process, the base station transmits to the target path MME handover acknowledgment message carries the user information of the UE, then the target base station transmits a UE context release message to the source base station, the source base station notifies the link switch X2 It has been successfully completed, you can free up resources previously occupied.

[0053] 但是,当目标基站与服务于源基站且UE驻留的MME间的Sl链路异常不可用时,MME就无法获取上述UE的用户信息。 [0053] However, when Sl MME when the link between the target base station and serving base station and the source UE is camping not available exception, MME can not acquire the user information of the UE. 虽然目标基站可以通过在目标侧的MME群组中寻找到与目标基站间的Sl链路为正常可用的MME1,并把路径切换请求消息发送到MME1。 Although the target base station through the MME side target group MME1 to find the link between the target base station Sl as normally available, and the path switching request message to the MME1. 但是,因为UE驻留在MME中而非驻留MMEl中,故MMEl中没有UE的用户信息,MMEl不处理上述路径切换请求消息,导致目标基站等待路径切换确认消息超时,X2链路切换失败。 However, because the UE in the MME resides MMEL not resident in MMEL so there is no user information of the UE, does not process the route MMEL handover request message causes the target base station waits for a timeout path switch acknowledgment message, an X2 handover failure link.

[0054] 本发明的不同实施例,可以根据目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0054] The various embodiments of the present invention, the target serving base station Sl and the link status between the source MME and the UE is camped base station information indicating the target base station and the source base station serving the UE and in Sl MME left link between the normal to the judgment target base station and the source base station handover or X2 link Sl link handover, successful handover source base station to a target base station, implemented in the UE from the source cell base station handover to a target cell under the base station.

[0055] 以下,结合附图对各具体实施例进行详细说明。 [0055] Hereinafter, in conjunction with the accompanying drawings of the specific embodiments described in detail.

[0056] 本发明一实施例提供一种基站间的切换方法,如图2所示,包括: [0056] The embodiment of the present invention provides a method for switching between a base station 2, comprising:

[0057] 301 :源基站向目标基站发送切换请求消息,用于将所述源基站提供服务的用户设备化6『Equipment (UE)切换至所述目标基站下的小区中。 [0057] 301: The source base station sends a handover request message to the target base station, a user equipment of the base station serving the source 6 "Equipment (UE) to a cell of the handover target base station.

[0058] 302 :所述源基站根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,确认进行X2链路切换或Sl链路切换。 [0058] 302: the source base station to the target base station and the source base station serving the Sl and link state information between a mobile management entity resides Mobile Management Entity (MME) UE according to confirm X2 chain Sl channel switching or handover link.

[0059] 在301中,当所述源基站确认服务于所述源基站的MME群组和服务于所述目标基站的MME群组具有相同的MME群组标识(简称MME Group ID)、及所述源基站和所述目标基站间的X2链路正常时,所述源基站向所述目标基站发送X2链路切换请求消息。 [0059] In 301, when the source base station has the same MME confirm service group identifier (referred to as MME Group ID) to the target base station MME group group and the MME serving the source base station, and the when X2 link between said source base station and the target base station normally, the source base station sends an X2 link handover request message to the target base station. 此时,源基站默认源基站和目标基站由同样的MME提供服务,且X2链路可用,故,源基站和目标基站间的切换无需经过MME的Sl链路,通过源基站和目标基站间的X2链路可直接完成切换动作。 At this time, the source base station and target base stations default source provided by the MME serving the same, and X2 link is available, so switching between the source and target base stations without going through a Sl MME link through between the source and target base stations of X2 link switching operation can be done directly.

[0060] 在本实施例中,通过两个标识符可以唯一标识一个MME,上述标识符分别为MME Group ID和MME密钥(简称MME Code)。 [0060] In the present embodiment, may be uniquely identified by a two MME identifier, the identifier described above were MME Group ID and MME key (referred to as MME Code). 源基站可以通过自身获取向其提供服务的MME群组的MME Group ID。 The source base station can obtain the MME Group ID group to which MME served by itself. 例如,当源基站和服务于源基站的MME群组建立Sl链路连接时,源基站可以获取服务于源基站的MME群组的MME Group ID。 For example, when the source base station and the service to establish a Sl MME group link connection source base station, the source base station to the source base station can obtain the MME serving the group MME Group ID. 且,向源基站提供服务的MME群组中的各个MME具有相同的MME Group ID,及不同的MME Code。 And, the group serving MME to the source MME each base station with the same MME Group ID, and a different MME Code. 同样,目标基站也可以通过自身获取向其提供服务的MME群组的MME Group ID。 Similarly, the target MME can also get the base station to which the group serving MME Group ID by itself. 且,向目标基站提供服务的MME群组中的各个MME具有相同的MME Group ID,及不同的MME Code。 And, the group serving MME to the target base station each have the same MME MME Group ID, and a different MME Code.

[0061] 在本实施例中,源基站可以通过显性方式或隐形方式获悉源基站和目标基站间的X2链路是否正常。 [0061] In the present embodiment, the source base station may be learned X2 link between the source and target base stations are normal or invisible manner by a dominant fashion. 例如,显性方式为,源基站可以通过源基站侧的状态标识获取X2链路的状态。 For example, as the dominant mode, the source base station can obtain the status of the X2 link identified by the state of the source base station side. 上述状态标识分别代表X2链路的三种状态,包括:断开、繁忙、及正常。 State flag representing the above three states X2 link, comprising: disconnecting, busy, and normal. 例如,当状态标识将X2链路的状态标记为断开时,表示源基站和目标基站间的X2链路的物理层还没有配置好,X2链路不可用。 For example, when the state flag state X2 link flag is OFF, X2 represents a physical layer link between the source and target base stations are not configured, X2 link is unavailable. 又如,当状态标识将X2链路的状态标记为繁忙时,表示源基站和目标基站间的X2链路的物理层已连接,但无法经由X2链路传送数据,X2链路不可用。 As another example, when the state of the state flag mark X2 link is busy, the X2 link indicates a physical layer between the source and target base stations are connected, but the data can not be transferred via the X2 link, X2 link is unavailable. 再如,当状态标识将X2链路的状态标记为正常时,表示源基站和目标基站间的X2链路的物理层已连接,且可以经由X2链路传送数据,X2链路正常可用。 Again, when the state flag state X2 link is marked as normal, showing a physical layer X2 link between the source and target base stations are connected, and may be transmitted via a data link X2, X2 link normally available. 又如,隐形方式为,源基站或目标基站向对端(源基站的对端为目标基站,同样,目标基站的对端为源基站。)传送数据,如果对端接收到上述数据,则表明源基站和目标基站间的X2链路正常可用。 As another example, the invisible way, the source base station or the target base station to the remote end (end on the source base station to a target base station, the same, on the ends of the target base station is a source base station) transmits data, if receiving the termination data, it indicates X2 link between the source and target base stations normally available. 本领域的技术人员可以理解,通过其他方法也可以获悉源基站和目标基站间的X2链路是否正常,在此不再赘述。 Those skilled in the art will appreciate, other methods may be learned by the X2 link between the source and target base stations are normal, not repeated here.

[0062] 在本实施例中,当触发A3事件时,源基站向目标基站发送切换请求消息。 [0062] In the present embodiment, when a triggering event A3, the source base station transmits a request message to the handover target base station. 上述A3 事件指的是当邻区的服务质量比服务小区高一个门限值。 Above A3 event is the quality of service when the neighborhood of a high than the serving cell threshold. 例如,目标基站下的小区的服务质量比UE当前所附着的源基站下的小区的服务质量高一个门限值时,源基站向目标基站发送切换请求消息,用于将UE切换至目标基站下的小区。 For example, the quality of service at the target cell base station is higher than the quality of service in the source cell of the UE is currently attached to base a threshold value, the source base station sends a handover request message to the target base station for handover to the target base station to the UE cell. 本领域的技术人员可以理解,上述门限值的定义可以为一个具体数值、也可以为一个数值范围,本发明对此不做限定。 Those skilled in the art will appreciate, the threshold may be defined as a specific value, or may be a range of values, which is not defined in the present invention.

[0063] 在302中,服务于源基站且用户设备(User Equipment,简称UE)驻留的MME保留有UE的用户信息。 [0063] At 302, the serving base station and the source user equipment (User Equipment, UE for short) retains the MME UE camped user information. 例如,上述UE的用户信息可以为与UE相关的安全性上下文、漫游限制、 UE能力信息等。 For example, the user information of the UE may be associated with the security context of the UE roaming restrictions, UE capability information.

[0064] 在本实施例中,源基站接收目标基站发送的目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息。 [0064] In the present embodiment, the target base station and the source base station receives the service sent by the target base station Sl MME link state information between the base station and the source resides in UE. 当所述目标基站与服务于所述源基站且所述UE驻留的MME 间的Sl链路状态信息指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl 链路异常时,源基站终止与所述目标基站的X2链路切换,转而进行Sl链路切换。 When Sl MME between the link status between Sl MME serving the target base station and the source base station and the UE is camped with information indicating the target base station serving the source base station and the UE is camped when the link is abnormal, an X2 link the source base station and the target base station terminates handover, a shift to the link switch Sl. 当所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路正常时,所述源基站与所述目标基站正常进行X2链路切换。 When Sl MME between the link status between Sl MME serving the target base station and the source base station and the UE is camped with information indicating the target base station serving the source base station and the UE is camped when the link is normal, the source base station and the target base station normally X2 handover link. 或者,当源基站没有接收到目标基站发送的目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息,且目标基站向源基站发送切换确认消息,源基站根据切换确认消息默认所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl 链路正常,源基站与目标基站正常进行X2链路切换。 Alternatively, when the source base station to the target base station does not receive the target base station sends the service Sl link status between the source MME and the UE is camped base station information, and the target base station sends a handover acknowledgment message to the source base station, an acknowledgment message according to the handover source base station Sl link between the normal default MME serving the target base station and the source base station and the UE resides, the source base station and the target base X2 link normal handover.

[0065] 在本实施例中,上述指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路异常的Sl链路状态信息可以携带在目标基站向源基站发送的切换准备失败消息(HANDOVER PREPARATION FAILURE)中。 [0065] In the present embodiment, the indication and the target base station serving the source base station and the link between the UE Sl MME resides abnormality Sl link state information may be carried in a source base station to the target base station the handover preparation failure message transmission (hANDOVER pREPARATION fAILURE) in. 例如,在切换准备失败消息中的传输网络层原因值(Transport Network Layer cause)信元中增加一个原因值,上述原因值表示目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路异常不可以用。 For example, in the transport network layer handover preparation failure cause value (Transport Network Layer cause) information element in the message increases a cause value indicating the target value of the above reasons residing in the base station and the source base station serving the UE and MME inter Sl with the link can not be an exception. 源基站接收到上述原因值后,可以判决无法进行源基站和目标基站间的X2链路切换,需要终止X2链路切换,转而进行Sl链路切换。 The source base station after receiving the cause value, the decision may not be the link X2 between the source and target base stations switch to terminate the link X2 handover, a shift to the link switch Sl.

[0066] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0066] Therefore, the present embodiment can Sl MME link status between the UE and the source base station resides information indicating the target base station and the source base station serving the target serving base station and the target base station to the source base station transmits Example and the link between Sl MME UE resides is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, to realize the UE from the source base station cell handover to the cell of the target base station.

[0067] 本发明另一实施例提供一种基站间的切换方法,如图3所示,包括: Another embodiment [0067] The present invention provides a method for switching between a base station 3, comprising:

[0068] 401 :源基站获取服务于所述源基站且所述UE驻留的MME的MME密钥MME Code。 [0068] 401: The source base station acquires the source base station serving the UE and the MME to MME MME Code key resides.

[0069] 402 :所述源基站接收所述目标基站发送的服务于所述目标基站的MME群组的MMECode集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的Sl链路正 MMECode set between the source base station receives the service sent by the target base station to the target base station MME group's, represented by the MME MME Code Code set MME and the target base station: [0069] 402 Sl positive link

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[0070] 403 :源基站向目标基站发送切换请求消息,用于将所述源基站提供服务的用户设备化6『Equipment (UE)切换至所述目标基站下的小区中。 [0070] 403: The source base station sends a handover request message to the target base station, a user equipment of the base station serving the source 6 "Equipment (UE) to a cell of the handover target base station.

[0071] 404 :所述源基站根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,确认进行X2链路切换或Sl链路切换。 [0071] 404: the source base station to the target base station and the source base station serving the Sl and link state information between a mobile management entity resides Mobile Management Entity (MME) UE according to confirm X2 chain Sl channel switching or handover link.

[0072] 在401中,当源基站和服务于源基站的MME群组间建立Sl链路连接时,源基站可以获取上述MME群组中的MME的MME Group ID和MME Code。 [0072] In 401, the source base station when the link connection and service to establish a Sl MME group between the source base station, the source base station can obtain the MME Group ID and MME MME Code above group of the MME. 当UE准备接入源基站时,源基站根据UE的用户信息选择驻留的EPC,且根据小区负载平衡,为UE选择EPC中的MME群组中的合适的MME,让UE得以驻留在上述MME中。 When the UE intends to access the source base station to select a source EPC resident user information of the UE and according to the cell load balancing, the EPC to the UE selects an MME group suitable MME, the UE to be resident in the above-described MME. 此时,源基站可以获取服务于源基站且UE 驻留的MME 的MME Code。 At this time, the source base station can obtain the source base station and the MME serving the MME Code UE resides.

[0073] 在402中,当所述源基站和所述目标基站建立连接时,所述源基站接收所述目标基站发送的X2链路连接建立请求消息(X2 Setup Request)或X2链路连接建立响应消息(X2 Setup Response),所述X2链路连接建立请求消息或所述X2链路连接建立响应消息可以包括服务于所述目标基站的MME群组的MME Code集合。 [0073] In 402, when the source base station and the target base station to establish a connection, the source base station receives the X2 link the target base station sends a connection establishment request message (X2 Setup Request) or an X2 link connection establishment a response message (X2 Setup response), the X2 link connection establishment request message or the X2 link connection establishment response message may include a set of Code MME serving MME to the target base station group. 本领域的技术人员可以理解,在源基站和目标基站建立连接的过程中,当源基站首先发起建立连接需求时,源基站向目标基站发送X2链路连接建立请求消息,目标基站向源基站发送X2链路连接建立响应消息,以确认连接。 Those skilled in the art will appreciate, the process of establishing a connection in the source and target base stations, when the source base station needs to establish a connection is first initiated, source base station sends an X2 link connection establishment request message to the target base station, the source base station to the target base station transmits X2 link connection establishment response message, to confirm the connection. 当目标基站首先发起建立连接需求时,目标基站向源基站发送X2链路连接建立请求消息,源基站向目标基站发送X2链路连接建立响应消息,以确认连接。 When the target base station first needs to initiate a connection, the source base station to the target base station sends an X2 link connection establishment request message, the source base station sends an X2 link connection establishment response message, the target base station to confirm the connection.

[0074] 当所述源基站和所述目标基站间需要重新配置连接时,所述源基站接收所述目标基站发送的配置更新消息(Configuration Update)或配置更新确认消息(ConfigurationUpdate Acknowledge),所述配置更新消息或所述配置更新确认消息可以包括服务于所述目标基站的MME群组的MME Code集合。 [0074] When the need to reconfigure the connection between the source base station and the target base station, the source base station receiving the configuration update message sent by the target base station (Configuration Update) or configuration update acknowledgment message (ConfigurationUpdate Acknowledge), the update the configuration message or configuration update confirm message may include a set of Code MME serving MME to the target base station group. 例如,当源基站和目标基站间建立连接后,当源基站或目标基站的相关信息发生变化时(如源基站或目标基站下的小区数量发生变化时),通知对端基站做相应更新。 (Such as when the number of cells in the source base station or a target base station is changed) For example, when the connection is established between the source and target base stations, when the related information source base station or the target base station is changed, a notification of the updated base station side accordingly. 本领域的技术人员可以理解,在源基站和目标基站建立连接的过程中,当源基站首先发起重新配置需求时,源基站向目标基站发送配置更新消息,目标基站向源基站发送配置更新确认消息,以确认重配置连接。 Those skilled in the art will appreciate, the process of establishing a connection in the source and target base stations, when the source base station first initiates reconfiguration requirements, the source base station sends a configuration update message to the target base station, a target base station sends the configuration to the source base update confirm message , to confirm that the connection reconfiguration. 当目标基站首先发起重新配置需求时,目标基站向源基站发送配置更新消息,源基站向目标基站发送配置更新确认消息,以确认重配置连接。 When the target base station first initiates reconfiguration requirements, target base station sends configuration update message to the source base station, the source base station to the target base station sends a configuration update confirm message to confirm the connection reconfiguration.

[0075] 本实施例的403可以参考上一实施例301中的相关描述,在此不再赘述。 [0075] 403 of the present embodiment can refer to the embodiment 301 described a related embodiment, not described herein again.

[0076] 在404中,源基站判断服务于所述源基站且所述UE驻留的MME的MMECode与所述MME Code集合中的MME Code是否相同,根据判断结果进行源基站和目标基站间的X2切换或Sl切换。 [0076] In 404, the source base station determines MMECode MME serving the UE and the source base station is the same as the camped MME MME Code Code set, performed between the source and target base stations according to the determination result X2 handover or switch Sl. 例如,当服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code 集合中的一个MME Code相同时,源基站确定目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路正常可用,无需进行EPC重定向的移动性管理,源基站与所述目标基站进行X2链路切换。 For example, when the MME Code MME serving the UE and the source base station and a MME resides Code Code set in the same MME, the source base station determines a target serving base station and the source base station and the UE Sl MME link between the resident normally available, without the need for mobility management EPC redirection, the source base station for handover and X2 link the target base station. 又如,当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的任意MME Code均不相同时,源基站确定目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路异常不可用,需要进行EPC重定向的移动性管理,所述源基站与所述目标基站进行Sl链路切换。 As another example, the MME when the MME Code source base station serving the UE and the MME resides with any of the MME Code Code set are not the same, the source base station determines a target base station serving the source Sl MME link between the base station and the UE is camped abnormality is unavailable, the need for mobility management EPC redirection, the source base station link switch Sl and the target base station.

[0077] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于目标基站的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0077] Therefore, the present embodiment may be information indicating the target base station and the source base station serving the UE according Sl and the link status between the target base station and the target base station serving the target base station transmits to the MME of the source base station Sl MME link between the resident is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, implemented in the UE from the source cell base station is switched to cell at the target base station.

[0078] 本发明另一实施例提供一种基站间的切换方法,如图4所示,包括: Another embodiment [0078] The present invention provides a method for switching between a base station 4, comprising:

[0079] 501 :第一基站向第二基站发送服务于所述第一基站的MME群组的第一MME密钥(简称MME Code)集合,所述第一MME Code集合中的MME Code所代表的MME与所述第一基站间的Sl链路正常。 [0079] 501: The first base station to the second base station transmits a first service group MME MME key the first base station (referred to as Code MME) set, the first MME MME represented by Code Code set Sl MME and the link between the first base station correctly.

[0080] 502 :所述第一基站接收所述第二基站发送的服务于所述第二基站的MME群组的第二MME Code集合,所述第二MME Code集合中的MME Code所代表的MME与所述第二基站间的Sl链路正常。 [0080] 502: the base station receiving the service sent by the MME second group of the second base station a second set of base stations a first Code MME, the MME on behalf of the second set MME Code Code of Sl MME and the link between the second base station correctly.

[0081] 503 :当第一基站/第二基站向第二基站/第一基站发送切换请求消息时,所述第一基站/第二基站根据所述第二基站/第一基站、与服务于所述第一基站/第二基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,确认进行X2链路切换或Sl链路切换。 [0081] 503: when the first base / second base station sends a handover request message to the second base station / first base station, the first base / second base station according to the second / first base station, and serving the first base / second base station Sl and the link state information between the UE mobility management entity resides mobile management entity (MME), a link confirm X2 handover or handover link Sl.

[0082] 在501、502中,第一基站获取第一MME Code集合、及第二基站获取第二MME Code 集合的方法可以参考上一实施例中401的相关描述,在此不再赘述。 [0082] In 501, the base station obtaining a first set of a first Code MME, and the MME method Code second set of second base station can obtain the relevant description with reference to the example of an embodiment 401, not described herein again.

[0083] 在503,当第一基站/第二基站分别具有第一MME Code及第二MMECode时,无论UE将要驻留在哪个基站,上述UE驻留的基站均能在发起切换请求时,获取对端基站与UE驻留的MME间的Sl链路状态信息。 [0083] At 503, when the first base / second base having first and second MME Code MMECode, regardless of the UE to camp which base station, the base station of the UE when camped can initiate a handover request to obtain Sl link state information between the base station and the MME UE terminal resides.

[0084] 例如,当UE驻留在第一基站时,第一基站可以通过第一MME Code集合获取UE驻留的MME的MME Code。 [0084] For example, when the UE resides in a first base station via a first base station may obtain a first set of the MME MME Code Code MME UE resides. 同时,第一基站接收第二基站发送的第二MME Code集合。 Meanwhile, a second set of Code first base station receives second base station sends the MME. 当第一基站向第二基站发送切换请求消息时,第一基站比对所述UE驻留的MME的MME Code与所述第二MME Code集合中的MME Code是否相同。 When the first base station sends a handover request message to the second base, the first base station is identical to the MME Code Code in the second set than the MME MME Code MME for the UE resides. 相同,则所述第一基站获悉所述第二基站与服务于所述第一基站且所述UE驻留的MME间的Sl链路正常,进行X2链路切换。 Same, then the first base station and the second base station was informed of the serving base station and the first link between Sl MME UE camped normally performs X2 handover link. 不同,则所述第一基站获悉所述第二基站与服务于所述第一基站且所述UE驻留的MME间的Sl链路异常,进行Sl链路切换。 Are different, the first base station and the second base station was informed of the serving first base station and the UE is camped abnormality Sl link between the MME, the link switch for Sl.

[0085] 又如,当UE驻留在第二基站时,第二基站可以通过第二MME Code集合获取UE驻留的MME的MME Code。 [0085] As another example, when the UE resides in a second base station, the second base station may set the MME MME acquired by the second UE resides Code MME Code. 同时,第二基站接收第一基站发送的第一MME Code。 Meanwhile, a first base station receives second base station transmits a first MME Code. 当第二基站向第一基站发送切换请求消息时,第二基站比对所述UE驻留的MME的MME Code与所述第一MME Code集合中的MME Code是否相同。 When the second base station sends a handover request message to the first base, second base station is identical to the MME Code Code set than in the first MME MME MME of the UE is camped Code. 相同,则所述第二基站获悉所述第一基站与服务于所述第二基站且所述UE驻留的MME间的Sl链路正常,进行X2链路切换。 The same, the second base station is informed that the first base station and the second base station serving the link between Sl MME UE camped normally performs X2 handover link. 不同,则所述第二基站获悉所述第一基站与服务于所述第二基站且所述UE驻留的MME间的Sl链路异常,进行Sl链路切换。 Different from, the second base station is informed that the first base station and the second base station serving the link between Sl MME UE resides abnormality link switch for Sl.

[0086] 本领域的技术人员可以理解,在本实施例中,发起切换请求消息的第一基站/第二基站为源基站,接收切换请求的第一基站/第二基站为目标基站。 [0086] Those skilled in the art will be appreciated, in the present embodiment, the first base station, the handover request message to initiate / second base station is a source base station, the first base station a handover request / second target base station.

[0087] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于目标基站的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0087] Therefore, the present embodiment may be information indicating the target base station and the source base station serving the UE according Sl and the link status between the target base station and the target base station serving the target base station transmits to the MME of the source base station Sl MME link between the resident is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, implemented in the UE from the source cell base station is switched to cell at the target base station.

[0088] 本发明另一实施例提供一种基站间的切换方法,如图5所示,包括: [0088] Another embodiment of the present invention provides a handover method between a base station 5, comprising:

[0089] 601 :目标基站接收源基站发送的切换请求消息,用于将所述源基站提供服务的用户设备her Equipment (UE)切换至所述目标基站下的小区中。 [0089] 601: handover target base station receives a request message sent by the source base station for source base station serving the user equipment her Equipment (UE) to a cell of the handover target base station.

[0090] 602 :所述目标基站向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,用于所述源基站确认进行X2链路切换或Sl链路切换。 [0090] 602: The target base station sends the target base station to the source base station and the source base station serving the UE Sl and link status information between a mobile management entity resides Mobile Management Entity (MME) , the source base station to confirm handover or X2 link link switch Sl.

[0091] 本实施例的601及602可参考上述其他实施例基站间的切换方法中的相关描述,在此不再赘述。 [0091] The embodiment 601 of the present embodiment and other embodiments described above with reference to 602 may handover method between a base station according to the related descriptions are not repeated here.

[0092] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0092] Therefore, the present embodiment can Sl MME link status between the UE and the source base station resides information indicating the target base station and the source base station serving the target serving base station and the target base station to the source base station transmits Example and the link between Sl MME UE resides is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, to realize the UE from the source base station cell handover to the cell of the target base station.

[0093] 本领域技术人员可以理解实现上述方法实施例的全部或部分流程可以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存储介质中,上述程序在执行时,执行包括上述方法实施例的流程;而前述的存储介质包括:R0M、RAM、磁碟或者光盘等各种可以存储程序代码的介质。 [0093] Those skilled in the art may understand that the above-described method embodiments all or part of the embodiment by a program instructing relevant hardware to finish, the program may be stored in a computer readable storage medium, when said program is executed, performing the processes of the above-described embodiment of the method; and the storage medium comprising: a variety of medium R0M, RAM, magnetic disk, or an optical disc capable of storing program code.

[0094] 本发明另一实施例提供一种基站,其主要结构可参考图6所示,包括: [0094] Another embodiment of the present invention provides a base station, with reference to the main structure shown in FIG. 6, comprising:

[0095] 发送单元701,用于向目标基站发送切换请求消息,以便将所述基站提供服务的用户设备her Equipment (UE)切换至所述目标基站下的小区中; [0095] The sending unit 701, configured to send a handover request message to the target base station, to the base station serving the user equipment her Equipment (UE) to a cell of the handover target base station;

[0096] 处理单元702,用于根据所述目标基站、与服务于所述基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,确认进行X2链路切换或Sl链路切换。 [0096] processing unit 702, according to the target base station, and the base station serving the UE Sl and link state information between a mobile management entity resides Mobile Management Entity (MME), an X2 link confirm Sl handover or handover link.

[0097] 其中,所述基站还包括确认单元,用于确认服务于所述基站的MME群组和服务于所述目标基站的MME群组具有相同的MME群组标识MMEGroup ID、及所述基站和所述目标基站间的X2链路正常,以便所述基站与所述目标基站进行X2链路切换。 [0097] wherein the base station further comprising a confirmation unit for confirming an MME serving the base station and the group have the same service group identifier MMEGroup ID MME MME to the target base station group, the base station and and X2 link between the target base station normally, so that the base station handover and X2 link the target base station.

[0098] 其中,所述基站还包括第一接收单元,用于接收所述目标基站发送的所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路状态信息,以便当所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路状态信息指示所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路异常时,所述基站终止与所述目标基站间的X2链路切换,转而进行Sl链路切换。 [0098] wherein the base station Sl MME link state information between the base station and residing in the UE further comprises a first receiving means for receiving the target base station and the target base station transmits the service, so that when the chain between Sl Sl MME link status between the MME and the target base station and the base station serving the UE is camped with information indicating the target base station and the base station serving the UE is camped when an abnormal way, the base station terminates an X2 handover link between the target base station, a shift to the link switch Sl.

[0099] 其中,所述第一接收单元,还用于接收所述目标基站发送的切换准备失败消息,所述切换准备失败消息包括所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路状态信息。 [0099] wherein the first receiving means for receiving the target base station further transmits a handover preparation failure message, including the handover preparation failure message to the target base station and the base station serving the UE camping Sl link state information between the MME.

[0100] 其中,所述基站还包括获取单元,用于获取服务于所述基站且所述UE驻留的MME 的MME密钥MME Code ;及第二接收单元,用于接收所述目标基站发送的服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的Sl链路正常。 [0100] wherein the base station further includes an acquisition unit for acquiring the base station and the MME serving MME of the UE is camped Code MME key; and a second receiving means for receiving the target base station transmits group MME serving the target base station set an MME Code, Sl MME link between the target base station and the MME MME Code Code set properly represented.

[0101] 其中,所述基站还包括判断单元,用于当所述服务于所述基站且所述UE驻留的MME的MME Code与所述MME Code集合中的一个MME Code相同时,判断所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路正常,所述基站与所述目标基站进行X2链路切换;及当所述服务于所述基站且所述UE驻留的MME的MME Code与所述MME Code集合中的任意MME Code均不相同时,判断所述目标基站与服务于所述基站且所述UE驻留的MME 间的Sl链路异常,所述基站与所述目标基站进行Sl链路切换。 [0101] wherein the base station further includes a determination unit for, when the base station and the MME serving the UE resides a MME with MME Code Code Code set the same in the MME, the determination said target base station and serving base station and the link between the UE Sl MME normally resides, X2 link the base station and the handover target base station; and when the serving base station and the the MME MME Code UE resides with any of the MME MME Code Code set are not the same, determining the target base station and serving base station and the link between the UE Sl MME resides abnormal, the base station link switch Sl and the target base station.

[0102] 其中,所述第二接收单元,还用于当所述基站和所述目标基站建立连接时,接收所述目标基站发送的连接建立请求消息或连接建立响应消息,所述连接建立请求消息或所述连接建立响应消息包括服务于所述目标基站的MME群组的MME Code集合。 [0102] wherein, the second receiving unit, further configured to, when the base station and the target base station to establish a connection, the target base station receives the connection establishment request message sent or connection establishment response message, the connection establishment request the connection establishment message or a response message including the Code set MME serving the target base station MME group.

[0103] 其中,所述第二接收单元,还用于当所述基站和所述目标基站间需要重新配置连接时,所述基站接收所述目标基站发送的配置更新消息或配置更新确认消息,所述配置更新消息或所述配置更新确认消息包括服务于所述目标基站的MME群组的MME Code集合。 [0103] wherein, the second receiving unit is further configured to, when the inter-base station and the target base station when the connection needs to be reconfigured, receives the base station configuration update message sent by the target base station or configuration update confirm message, or updating the configuration message includes the configuration update confirm message Code set MME serving the target base station MME group.

[0104] 本实施例的基站,用于实现上述基站间的切换方法中的源基站所执行的动作。 [0104] Example embodiment of the present operation of the base station, the source base station for implementing the handover method between the base station performed. 例如,上述发送单元701用于执行一实施例基站间的切换方法中301的动作,上述处理单元702用于执行一实施例基站间的切换方法中302的动作。 For example, the transmission unit 701 for performing the method of switching between the operation of the base station 301 in one embodiment, processing unit 702 for performing the above-described method of switching between the operation of the base station 302 according to an embodiment.

[0105] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于源基站且UE 驻留的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换, 成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0105] Therefore, the present embodiment can Sl MME link status between the UE and the source base station resides information indicating the target base station and the source base station serving the target serving base station and the target base station to the source base station transmits Example and the link between Sl MME UE resides is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, to realize the UE from the source base station cell handover to the cell of the target base station.

[0106] 本发明另一实施例提供一种基站,其主要结构可参考图7所示,包括: Another embodiment [0106] The present invention provides a base station, and its main structure can be referred to FIG. 7, comprising:

[0107] 接收单元801,用于接收源基站发送的切换请求消息,以便将所述源基站提供服务的用户设备her Equipment (UE)切换至所述基站下的小区中; [0107] The receiving unit 801, for receiving a handover request message sent by the source base station to the user equipment her source base station serving Equipment (UE) to switch to a cell of the base station;

[0108] 发送单元802,用于向所述源基站发送所述基站、与服务于所述源基站且所述UE 驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,以便所述源基站确认进行X2链路切换或Sl链路切换。 [0108] sending unit 802, configured to send the base station to the source, and the source base station serving the UE Sl and link state information between a mobile management entity resides Mobile Management Entity (MME), the source base station to confirm handover or X2 link link switch Sl.

[0109] 其中,所述基站还包括指示单元,用于经由所述基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息向所述源基站指示所述基站、与服务于所述源基站且所述UE驻留的MME间的Sl链路异常,用于所述源基站终止与所述基站间的X2链路切换,转而进行Sl链路切换。 [0109] wherein the base station further comprises indicating means for Sl MME link state information between the base station via the source base station serving the UE and the base station resides indication to the source base station , and the source base station serving the UE and the MME Sl link between abnormal resides, X2 for the link between the source base station terminates the base station handover, a shift to the link switch Sl.

[0110] 其中,所述发送单元802,还用于向所述源基站发送切换准备失败消息,所述切换准备失败消息包括所述基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信肩、ο [0110] wherein, the sending unit 802 is further configured to send a handover preparation failure message to the source base station, the handover preparation failure message comprising the base station and the serving MME residing in the source base station and the UE Sl status signal link between the shoulders, ο

[0111] 其中,所述发送单元802,还用于向所述源基站发送服务于所述基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述基站间的Sl链路正 [0111] wherein, the sending unit 802 is further configured to transmit Code set MME serving MME of the base station to the source base station group, the MME MME MME Code Code set represented by the Sl positive link between the base stations

Hall

巾ο Towel ο

[0112] 本实施例的基站,用于实现其他实施例基站间的切换方法中的目标基站所执行的动作。 [0112] The base station according to the present embodiment, a method for implementing a switching operation between the target base station of the base station performed by the other embodiments. 例如,上述接收单元801可以用于执行一实施例中的601的动作,上述发送单元802可以用于执行一实施例中的602的动作。 For example, the receiving unit 801 may be used to perform operation 601 in one embodiment embodiment, the transmission unit 802 may be used in the operation of the embodiment 602 of an embodiment performed.

[0113] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0113] Therefore, the present embodiment can Sl MME link status between the UE and the source base station resides information indicating the target base station and the source base station serving the target serving base station and the target base station to the source base station transmits Example and the link between Sl MME UE resides is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, to realize the UE from the source base station cell handover to the cell of the target base station.

[0114] 本发明另一实施例提供一种通讯系统,其主要结构包括: Another embodiment [0114] The present invention provides a communication system, the main structure comprising:

[0115] —源基站、及一目标基站; [0115] - the source base station and a target base station;

[0116] 所述源基站,用于向目标基站发送切换请求消息,以便将所述基站提供服务的用户设备her Equipment(UE)切换至所述目标基站下的小区中;及根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,进行X2链路切换或Sl链路切换; The user equipment her Equipment (UE) [0116] The source base station, a request message to the target base station sends a handover, to the handover to a base station serving a cell in the target base station; and a base station according to the target , and between the serving mobility management of the UE and the source base station entity resides mobile management entity (MME) in the Sl link state information for the X2 link or handover link switch Sl;

[0117] 所述目标基站,用于接收源基站发送的切换请求消息;及向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息。 [0117] the target base station, for receiving a handover request message sent by the source base station; and the source base station transmits to the target base station and the source base station serving the UE Sl and chain residing between MME road status information.

[0118] 故,本实施例可以根据目标基站向源基站发送的目标基站与服务于源基站且UE驻留的MME间的Sl链路状态信息,指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路是否正常,以判决源基站与目标基站进行Sl链路切换或X2链路切换,成功进行源基站向目标基站的切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0118] Therefore, the present embodiment can Sl MME link status between the UE and the source base station resides information indicating the target base station and the source base station serving the target serving base station and the target base station to the source base station transmits Example and the link between Sl MME UE resides is normal, the judgment to be the source base station and the target base station handover or X2 link Sl link handover, successful handover source base station to a target base station, to realize the UE from the source base station cell handover to the cell of the target base station.

[0119] 本发明一实施例提供一种基站间的切换方法,包括: [0119] embodiment of the present invention provides a method for switching between a base station, comprising:

[0120] 31 :目标基站接收源基站发送的X2链路切换请求消息,用于将所述源基站提供服务的用户设备her Equipment (UE)切换至所述目标基站下的小区中。 [0120] 31: X2 handover target base station receives the link request message sent by the source base station for source base station serving the user equipment her Equipment (UE) to a cell of the handover target base station.

[0121] 32:所述目标基站经由服务于所述目标基站的第一移动管理实体MobilityManagement Entity(MME)连接服务于所述源基站且所述UE驻留的第二MME。 [0121] 32: the target base station to the target base station serving the first mobile management entity MobilityManagement Entity (MME) via the source base station serving the second MME and the UE is camped.

[0122] 33 :所述目标基站与所述源基站进行X2链路切换。 [0122] 33: the target base station and the handover source base station X2 link.

[0123] 在31中,当所述源基站确认服务于所述源基站的MME群组和服务于所述目标基站的MME群组具有相同的MME群组标识(简称MME Group ID)、及所述源基站和所述目标基站间的X2链路正常时,所述源基站向所述目标基站发送X2链路切换请求消息。 [0123] In 31, when the source base station has the same MME confirm service group identifier (referred to as MME Group ID) to the target base station MME group group and the MME serving the source base station, and the when X2 link between said source base station and the target base station normally, the source base station sends an X2 link handover request message to the target base station. 此时,源基站默认源基站和目标基站由同样的MME提供服务,且X2链路可用,故,源基站和目标基站间的切换无需经过MME的Sl链路,通过源基站和目标基站间的X2链路可直接完成切换动作。 At this time, the source base station and target base stations default source provided by the MME serving the same, and X2 link is available, so switching between the source and target base stations without going through a Sl MME link through between the source and target base stations of X2 link switching operation can be done directly. [0124] 在本实施例中,通过两个标识符可以唯一标识一个MME,上述标识符分别为MME Group ID和MME密钥(简称MME Code)。 [0124] In the present embodiment, may be uniquely identified by a two MME identifier, the identifier described above were MME Group ID and MME key (referred to as MME Code). 源基站可以通过自身获取向其提供服务的MME群组的MME Group ID。 The source base station can obtain the MME Group ID group to which MME served by itself. 例如,当源基站和服务于源基站的MME群组建立Sl链路连接时,源基站可以获取服务于源基站的MME群组的MME Group ID。 For example, when the source base station and the service to establish a Sl MME group link connection source base station, the source base station to the source base station can obtain the MME serving the group MME Group ID. 且,向源基站提供服务的MME群组中的各个MME具有相同的MME Group ID,及不同的MME Code。 And, the group serving MME to the source MME each base station with the same MME Group ID, and a different MME Code. 同样,目标基站也可以通过自身获取向其提供服务的MME群组的MME Group ID。 Similarly, the target MME can also get the base station to which the group serving MME Group ID by itself. 且,向目标基站提供服务的MME群组中的各个MME具有相同的MME Group ID,及不同的MME Code。 And, the group serving MME to the target base station each have the same MME MME Group ID, and a different MME Code.

[0125] 在本实施例中,源基站可以通过显性方式或隐形方式获悉源基站和目标基站间的X2链路是否正常。 [0125] In the present embodiment, the source base station may be learned X2 link between the source and target base stations are normal or invisible manner by a dominant fashion. 例如,显性方式为,源基站可以通过源基站侧的状态标识获取X2链路的状态。 For example, as the dominant mode, the source base station can obtain the status of the X2 link identified by the state of the source base station side. 上述状态标识分别代表X2链路的三种状态,包括:断开、繁忙、及正常。 State flag representing the above three states X2 link, comprising: disconnecting, busy, and normal. 例如,当状态标识将X2链路的状态标记为断开时,表示源基站和目标基站间的X2链路的物理层还没有配置好,X2链路不可用。 For example, when the state flag state X2 link flag is OFF, X2 represents a physical layer link between the source and target base stations are not configured, X2 link is unavailable. 又如,当状态标识将X2链路的状态标记为繁忙时,表示源基站和目标基站间的X2链路的物理层已连接,但无法经由X2链路传送数据,X2链路不可用。 As another example, when the state of the state flag mark X2 link is busy, the X2 link indicates a physical layer between the source and target base stations are connected, but the data can not be transferred via the X2 link, X2 link is unavailable. 再如,当状态标识将X2链路的状态标记为正常时,表示源基站和目标基站间的X2链路的物理层已连接,且可以经由X2链路传送数据,X2链路正常可用。 Again, when the state flag state X2 link is marked as normal, showing a physical layer X2 link between the source and target base stations are connected, and may be transmitted via a data link X2, X2 link normally available. 又如,隐形方式为,源基站或目标基站向对端(源基站的对端为目标基站,同样,目标基站的对端为源基站。)传送数据,如果对端接收到上述数据,则表明源基站和目标基站间的X2链路正常可用。 As another example, the invisible way, the source base station or the target base station to the remote end (end on the source base station to a target base station, the same, on the ends of the target base station is a source base station) transmits data, if receiving the termination data, it indicates X2 link between the source and target base stations normally available. 本领域的技术人员可以理解,通过其他方法也可以获悉源基站和目标基站间的X2链路是否正常,在此不再赘述。 Those skilled in the art will appreciate, other methods may be learned by the X2 link between the source and target base stations are normal, not repeated here.

[0126] 在32中,当所述目标基站与服务于所述源基站且所述UE驻留的第二MME间的Sl 链路状态异常时,所述目标基站经由第一MME连接所述第二MME。 [0126] In 32, when the link status between a second Sl MME serving the target base station and the source base station and the UE is camped abnormal, the target base station is connected to the MME via a first section two MME.

[0127] 在本实施例中,因为UE驻留在第二MME中,故目标基站需要从第二MME中获取UE 的用户信息后,才能完成在源基站和目标基站间正常的X2链路切换。 [0127] In the present embodiment, since the second UE resides in the MME, so that the target base station needs to obtain information from the second user of the UE after the MME, to complete the normal switching X2 link between the source and target base stations . 而当目标基站与第二MME间的Sl链路状态异常时,目标基站与第二MME间无法进行正常的数据通讯,则目标基站无法直接从第二MME获取UE的用户信息。 Sl while the link status between the second base station and the MME when the target exception, the target base station and the second inter-MME normal data communication can not be performed, the target base station can not obtain the information directly from the user of the UE second MME. 第一MME与第二MME间建立连接,指的是第一MME与第二MME间可以通过SlO接口建立SlO链路的连接。 Establishing a first connection between the second MME MME, the first MME means connected between the second MME may establish a link through SlO SlO interface. 通过目标基站与第一MME间正常的Sl链路状态,及第一MME与第二MME间正常的SlO链路状态,所述目标基站可以通过第一MME间接获取第二MME中的所述UE的用户信息。 Between the target base station via the first link Sl MME normal state, and the first MME normal SlO link status between the second MME, the target base station may indirectly acquire the second UE by the MME first MME user information.

[0128] 在本实施例中,上述UE的用户信息可以为与UE相关的安全性上下文、漫游限制、 UE能力信息等。 [0128] In the present embodiment, the user information of the UE security context may be associated with the UE, roaming restrictions, UE capability information.

[0129] 在33中,第一MME向目标基站发送的路径切换确认消息中携带UE的用户信息,随后,目标基站向源基站发送释放UE上下文消息,通知源基站X2链路切换已经顺利完成,可以释放原先占用的资源。 [0129] In 33, the path of the first base station to the target MME sends a handover acknowledgment message carries the user information of the UE, then the target base station transmits a UE context release message to the source base station, the source base station notifies the link X2 handover has been successfully completed, free up resources previously occupied.

[0130] 故,本实施例可以在目标基站与服务于源基站且UE驻留的MME间的Sl链路状态异常时,间接获取UE的用户信息,成功进行源基站向目标基站的X2链路切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0130] Therefore, the present embodiment may be a target base station when the service Sl MME link status between the base station and the source UE is camped abnormal indirectly acquire user information of the UE, successful X2 link source base station to a target base station handover, UE in the cell to achieve base station handover from a source cell to the target base station.

[0131] 本发明另一实施例提供一种基站间的切换方法,包括: Another embodiment [0131] The present invention provides a method for switching between a base station, comprising:

[0132] 41 :源基站向目标基站发送X2链路切换请求消息,用于将所述源基站提供服务的用户设备her Equipment (UE)切换至所述目标基站下的小区中。 [0132] 41: X2 link handover source base station sends a request message to the target base station, the source base station for providing service to a user equipment her Equipment (UE) to a cell of the handover target base station.

17[0133] 42 :当服务于源基站且UE驻留的第二MME与所述目标基站间的Sl链路异常时,所述目标基站发送获取所述UE的用户信息的指示至服务于所述目标基站的第一MME。 17 [0133] 42: Sl when the second link between the source base station and the MME serving the UE and the target base station resides abnormal, the target base station transmits the acquired user information of the UE to indicate to the service said first base station to the target MME.

[0134] 43 :所述第一MME与所述第二MME间建立连接。 [0134] 43: the first MME establish a connection with the second inter-MME.

[0135] 44 :所述第一MME将获取所述UE的用户信息的指示发送至所述第二MME。 [0135] 44: the MME acquires the first information indicating that the user of the UE is sent to the second MME.

[0136] 45 :所述第二MME发送所述UE的用户信息至所述第一MME。 [0136] 45: the second user MME UE, the information transmitted to the first MME.

[0137] 46 :所述目标基站接收所述第一MME转发的所述UE的用户信息。 [0137] 46: first receiving the MME forwards the user information of the target base station of the UE.

[0138] 47 :所述目标基站向所述源基站发送释放UE上下文消息,用于完成源基站与目标基站间的X2链路切换。 [0138] 47: the target base station transmits a UE context release message to the source base station for the link X2 between the source base station and the target base station to complete handover.

[0139] 本实施例的41可以参考上一实施例31的相关描述,在此不再赘述。 [0139] 41 of the present embodiment can refer to the description of Example 31 related to an embodiment, which is not repeated herein.

[0140] 在42及43中,当目标基站和服务于目标基站的MME群组间建立Sl链路连接时,目标基站可以获取上述MME群组中的MME的MME Group ID。 When [0140] In 42 and 43, the target base station when the link connection and service to establish a Sl MME group between the target base station, the base station may acquire the target group of the MME MME MME Group ID. 同样,当源基站和服务于源基站的MME群组间建立Sl链路连接时,源基站也可以获取上述MME群组中的MME的MME GroupID。 Similarly, when the source base station and the service to establish a link connection between Sl MME group source base station, the source base station may acquire the GroupID MME MME in the group above the MME. 当UE准备接入源基站时,源基站根据UE的用户信息选择驻留的EPC,且根据小区负载平衡,为UE选择EPC中的MME群组中的合适的MME,让UE得以驻留在上述MME中。 When the UE intends to access the source base station, the source base station selected according to the user information resides EPC UE and according to the cell load balancing, the EPC to the UE selects an MME group suitable MME, the UE to be resident in the above-described MME. 此时,源基站可以获取服务于源基站且UE驻留的MME的MME Group ID。 At this time, the source base station can obtain service in the source base station and the MME MME Group ID UE resides.

[0141] 在本实施例中,当第一MME与第二MME位于同一个MME群组时,第一MME与第二MME具有相同的MME Group ID。 [0141] In the present embodiment, the first MME when the MME and the second group in the same MME, the first MME and the second with the same MME MME Group ID. 当目标基站通过相同的MME Group ID在MME群组中找到第二MME但无法与其进行数据通讯时,目标基站同样可以通过相同的MME Group ID在上述MME群组中找到适合与其进行数据通讯的第一MME,并通过第一MME与第二MME间正常的SlO链路,间接获取第一MME中的UE的用户信息。 When the target base station but not the second MME data communication therewith by the same MME Group ID group found in the MME, the target base station can also be adapted to find the first data communication therewith in said group by the same MME MME Group ID a MME, the MME and between the first and second link SlO normal MME, the first MME indirectly obtain user information in the UE.

[0142] 在本实施例中,所述目标基站可以发送路径切换请求消息(Path SwitchRequest)至所述第一MME,所述路径切换请求消息包含所述获取所述UE的用户信息的指 [0142] In the present embodiment, the target base station may send a path switch request message (Path SwitchRequest) the first to the MME, a path switch request message containing the acquired user information of the UE fingers

7J\ ο 7J \ ο

[0143] 在44中,第一MME向第二MME发送路径切换请求消息,所述路径切换请求消息携带有所述获取所述UE的用户信息的指示。 [0143] 44, the first to the second MME MME sends a path switch request message, the path switching request message carries the user information acquiring indication of the UE.

[0144] 在45中,因为UE本身就驻留在第二MME中,故第二MME可以通过自身获取UE的用户信息,并将上述UE的用户信息通过SlO链路发送至第一MME。 [0144] 45, since the second UE itself resides in the MME, the MME may obtain the UE so that the second user information by itself, and transmits the user information of the UE to the MME via a first link SlO.

[0145] 在本实施例中,所述第二MME向所述第一MME发送路径切换确认消息,所述路径切换确认消息包含所述UE的用户信息。 [0145] In the present embodiment, the second MME handover acknowledgment message sent by the MME to the first path, the path switch acknowledgment message including subscriber information of the UE. [0146] 在46中,目标基站接收第一MME转发的路径切换确认消息,所述路径切换确认消息包含所述UE的用户信息。 [0146] In 46, the target base station receives the first forward path MME handover acknowledgment message, the path switch acknowledgment message containing user information of the UE.

[0147] 故,本实施例可以在目标基站与服务于源基站且UE驻留的MME间的Sl链路状态异常时,间接获取UE的用户信息,成功进行源基站向目标基站的X2链路切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0147] Therefore, the present embodiment may be a target base station when the service Sl MME link status between the base station and the source UE is camped abnormal indirectly acquire user information of the UE, successful X2 link source base station to a target base station handover, UE in the cell to achieve base station handover from a source cell to the target base station.

[0148] 本发明另一实施例提供一种基站间的切换方法,包括: Another embodiment [0148] The present invention provides a method for switching between a base station, comprising:

[0149] 51 :服务于源基站且UE驻留的第二MME连接服务于目标基站的第一MME。 [0149] 51: the source base station and the second serving MME serving the UE is camped is connected to the first base station to the target MME.

[0150] 52 :所述第二MME经由所述第一MME连接所述目标基站,用以当所述源基站向所述目标基站发送X2链路切换请求消息时,所述目标基站与所述源基站进行X2链路切换。 [0150] 52: the second MME the target base station is connected via the first MME, configured when the source base station sends an X2 link handover request message to the target base station, the target base station and the X2 link handover source base station.

[0151] 本实施例的51及52可参考上述其他实施例基站间的切换方法中的相关描述,在此不再赘述。 [0151] 51 and 52 of the present embodiment may refer to the above-described method of switching between the other base station embodiments related descriptions are not repeated here.

[0152] 故,本实施例可以在目标基站与服务于源基站且UE驻留的MME间的Sl链路状态异常时,间接获取UE的用户信息,成功进行源基站向目标基站的X2链路切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0152] Therefore, the present embodiment may be a target base station when the service Sl MME link status between the base station and the source UE is camped abnormal indirectly acquire user information of the UE, successful X2 link source base station to a target base station handover, UE in the cell to achieve base station handover from a source cell to the target base station.

[0153] 本发明另一实施例提供一种基站,包括: Another embodiment [0153] The present invention provides a base station, comprising:

[0154] 接收单元61,用于接收源基站发送的X2链路切换请求消息,以便将所述源基站提供服务的用户设备her Equipment(UE)切换至所述基站下的小区中; [0154] The receiving unit 61, for receiving the X2 link source base station sends a handover request message, the source base station to the user equipment served her Equipment (UE) to switch to a cell of the base station;

[0155] 连接单元62,用于经由服务于所述基站的第一MME连接服务于所述源基站且所述UE驻留的第二MME •'及 [0155] connecting means 62, via a first base station serving the serving MME is connected to the source base station and the second UE resides MME • 'and

[0156] 切换单元,用于与所述源基站进行X2链路切换。 [0156] switching means for switching the X2 link with the source base station.

[0157] 本实施例的基站,用于实现上述基站间的切换方法中的目标基站所执行的动作。 [0157] the operation of the base station of the present embodiment, a method for implementing handover between base stations of the target base station to perform. 例如,上述接收单元61用于执行一实施例基站间的切换方法中31的动作,上述连接单元62 用于执行一实施例基站间的切换方法中32的动作。 For example, the receiving unit 61 for performing the method of switching between the operation of the base station 31 according to an embodiment, the connection unit 62 for performing the method of switching between the operation of the base station 32 according to an embodiment.

[0158] 故,本实施例可以在目标基站与服务于源基站且UE驻留的MME间的Sl链路状态异常时,间接获取UE的用户信息,成功进行源基站向目标基站的X2链路切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0158] Therefore, the present embodiment may be a target base station when the service Sl MME link status between the base station and the source UE is camped abnormal indirectly acquire user information of the UE, successful X2 link source base station to a target base station handover, UE in the cell to achieve base station handover from a source cell to the target base station.

[0159] 本发明另一实施例提供一种移动管理实体MME,包括: Another embodiment [0159] The present invention provides a Mobility Management Entity MME, comprising:

[0160] 连接单元71,用于连接服务于目标基站的第一MME及服务于源基站且所述UE驻留的MME,以便所述MME经由所述第一MME连接所述目标基站,用以当所述源基站向所述目标基站发送X2链路切换请求消息时,所述目标基站与所述源基站进行X2链路切换。 [0160] connecting means 71, and the first MME serving the target service for connection to the source base station and the base station resides MME UE, the MME to the target base station is connected via the first MME, for when the source base station transmits a handover request message X2 link to the target base station, the target base station and the handover source base station X2 link.

[0161] 本实施例的移动管理实体,用于实现上述实施例基站间的切换方法中的服务于源基站且UE驻留的第二MME所执行的动作。 [0161] This action performed MME embodiment of a method for realizing the handover between base stations in the above embodiment the source base station serving the second UE resides and MME. 例如,上述连接单元71可以用于执行一实施例中的51的动作。 For example, the connection means 71 may be used to perform an operation in the embodiment 51 of an embodiment.

[0162] 故,本实施例可以在目标基站与服务于源基站且UE驻留的MME间的Sl链路状态异常时,间接获取UE的用户信息,成功进行源基站向目标基站的X2链路切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0162] Therefore, the present embodiment may be a target base station when the service Sl MME link status between the base station and the source UE is camped abnormal indirectly acquire user information of the UE, successful X2 link source base station to a target base station handover, UE in the cell to achieve base station handover from a source cell to the target base station.

[0163] 本发明另一实施例提供一种网元管理系统,包括: Another embodiment [0163] The present invention provides a network element management system, comprising:

[0164] 一服务于目标基站的第一MME、及一服务于源基站且所述UE驻留的第二MME ; [0164] a first base station serving the target MME, and a serving base station and the second source MME UE resides;

[0165] 所述第一MME,用于连接所述第二MME ; [0165] The first MME, the MME for the second connection;

[0166] 所述第二MME,用于连接所述第一MME,以便所述第二MME经由所述第一MME连接所述目标基站,用以当所述源基站向所述目标基站发送X2链路切换请求消息时,所述目标基站与所述源基站进行X2链路切换。 [0166] The second MME, MME for connecting said first, said second MME to the target base station is connected via the first MME, when the source base station to the target base station sends X2 when the link handover request message, the target base station and the handover source base station X2 link.

[0167] 故,本实施例可以在目标基站与服务于源基站且UE驻留的MME间的Sl链路状态异常时,间接获取UE的用户信息,成功进行源基站向目标基站的X2链路切换,实现UE自源基站下的小区切换至目标基站下的小区。 [0167] Therefore, the present embodiment may be a target base station when the service Sl MME link status between the base station and the source UE is camped abnormal indirectly acquire user information of the UE, successful X2 link source base station to a target base station handover, UE in the cell to achieve base station handover from a source cell to the target base station.

[0168] 在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。 [0168] In several embodiments provided herein present embodiment, it should be understood that the system, apparatus and method disclosed may be implemented in other manners. 例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。 For example, the described apparatus embodiments are merely illustrative of, for example, the unit division is merely logical function division, there may be other division in actual implementation, for example, a plurality of units or components may be combined or It can be integrated into another system, or some features may be ignored or not performed. 另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。 Another point, displayed or coupling or direct coupling or communication between interconnected in question may be through some interface, device, or indirect coupling or communication connection unit, may be electrical, mechanical, or other forms.

[0169] 所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。 [0169] The unit described as separate components may be or may not be physically separate, parts displayed as units may be or may not be physical units, i.e. may be located in one place, or may be distributed to a plurality of networks unit. 可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。 You can select some or all of the units according to actual needs to achieve the object of the solutions of the embodiments.

[0170] 另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。 [0170] Additionally, functional units may be integrated in various embodiments of the present invention in a processing unit, separate units may be physically present, may be two or more units are integrated into one unit. 上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。 The integrated unit may be implemented in the form of hardware, software functional units may also be implemented.

[0171] 所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。 [0171] If the integrated unit is realized as an independent product sold or used in the form of a software functional unit may be stored in a computer-readable storage medium. 基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 Based on such understanding, the technical solutions of the present invention essentially, or the part or all of the technical solutions contributing to the prior art may be embodied in part or in the form of a software product, which computer software product is stored in a storage medium , including several instructions for instructing a computer device (may be a personal computer, a server, or network device) to perform all or part of the steps of the methods of the various embodiments of the present invention. 而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-onlyMemory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。 The storage medium includes: U disk, mobile hard disk, a read-only memory (ROM, Read-onlyMemory), a random access various memory (RAM, Random Access Memory), a magnetic disk, or an optical medium can store program codes.

[0172] 本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描述进行分布于实施例的装置中,也可以进行相应变化位于不同于本实施例的一个或多个装置中。 [0172] Those skilled in the art will be appreciated apparatus embodiment that the modules can be distributed to the embodiment of the device according to the embodiment may be performed according to the present embodiment which are different from one case or more devices. 上述实施例的模块可以合并为一个模块,也可以进一步拆分成多个子模块。 Modules of the embodiments may be combined into one module, or split into multiple submodules.

[0173] 本领域技术人员可以理解,本发明实施例中装置模块的划分为功能划分,实际具体结构可以为上述功能模块的拆分或合并。 [0173] Those skilled in the art will appreciate, the dividing device module embodiment of the present invention is a division function, a specific structure may actually split or merge of the functional module.

[0174] 以上实施例的序号仅仅为了描述,不代表实施例的优劣。 [0174] numbers of the examples above are merely for description, the embodiments do not represent the merits embodiment.

[0175] 权利要求的内容记载的方案也是本发明实施例的保护范围。 [0175] Program contents of the claims of the present invention are also described in the scope of the embodiments.

[0176] 最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。 [0176] Finally, it should be noted that: the above embodiments are intended to illustrate the present invention, rather than limiting;. Although the present invention has been described in detail embodiments, those of ordinary skill in the art should be understood: may still be made to the technical solutions described in each embodiment of the modified or part of the technical features equivalents; as such modifications or replacements do not cause the essence of corresponding technical solutions to depart from the technical solutions of the embodiments of the present invention and scope.

Claims (33)

1.基站间的切换方法,其特征在于,包括:源基站向目标基站发送切换请求消息,用于将所述源基站提供服务的用户设备User Equipment (UE)切换至所述目标基站下的小区中;所述源基站根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的SI链路状态信息,确认进行X2链路切换或SI链路切换。 1. A method of handover between base stations, characterized by comprising: a source base station transmits a request message to the handover target base station, a user equipment for User Equipment to the source base station provides services (UE) in the cell to switch to the target base station ; and the source base station to the target base station and the source base station serving the SI and link state information between a mobile management entity resides mobile management entity (MME) UE according to confirm handover or X2 link SI link switch.
2.如权利要求I所述的方法,其特征在于,所述源基站向目标基站发送切换请求消息, 用于将所述源基站提供服务的用户设备User Equipment(UE)切换至所述目标基站下的小区中,包括:所述源基站确认服务于所述源基站的MME群组和服务于所述目标基站的MME群组具有相同的MME群组标识MME Group ID、及所述源基站和所述目标基站间的X2链路正常;所述源基站向所述目标基站发送X2链路切换请求消息,用于所述源基站与所述目标基站进行X2链路切换。 2. The method of claim I, wherein the source base station transmits a request message to the handover target base station, a user equipment for User Equipment to the source base station provides services (UE) to switch to the target base station under the cell, comprising: a source base station confirms the serving MME of the source base station and a group having the same service group identifier MME MME MME group ID group to the target base station and the source base station and X2 link between the target base station is normal; X2 link the source base station transmits a handover request message to the target base station, the source base station for the handover target base station X2 link.
3.如权利要求2所述的方法,其特征在于,所述源基站根据所述目标基站与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity (MME)间的SI链路状态信息,确认进行X2链路切换或SI链路切换,包括:所述源基站接收所述目标基站发送的所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息;当所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路异常时,所述源基站终止与所述目标基站的X2链路切换,转而进行SI链路切换。 3. The method according to claim 2, characterized in that, according to the source base station and the target base station SI services between a mobile management entity resides Mobile Management Entity (MME) at the source base station and the UE link state information, confirm handover or X2 link SI link switching, comprising: between the target base station and the target base station receives the service sent by the source base station to the source base station and the MME UE residing the link status information SI; SI when the link status information indicating the intra-MME serving the target base station and the source base station and the UE is camped with the target base station serving the UE and the source base station when the link between the MME SI resides exception, terminating an X2 link the source base station and the target base station handover, a shift to the link switch SI.
4.如权利要求3所述的方法,其特征在于,所述源基站接收所述目标基站发送所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息,包括:所述源基站接收所述目标基站发送的切换准备失败消息,所述切换准备失败消息包括所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息。 4. The method according to claim 3, wherein the target base station receives the source base station transmits to the target base station serving the source base station and MME SI link status between the UE is camped information, comprising: a source base station receives the target base station transmits the handover preparation failure message, the handover preparation failure message service comprising the target base station SI chain residing between the MME in the source base station and the UE road status information.
5.如权利要求I所述的方法,其特征在于,所述源基站向目标基站发送切换请求消息, 用于将所述源基站提供的用户设备User Equipment(UE)切换至所述目标基站下的小区中前,包括:所述源基站获取服务于所述源基站且所述UE驻留的MME的MME密钥MME Code ;所述源基站接收所述目标基站发送的服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的SI链路正常。 5. The method of claim I, wherein the source base station transmits a request message to the handover target base station, a user equipment for User Equipment to the source base station provided (UE) to the target base station at handover in front of the cell, comprising: acquiring the source base station to the source base station serving the UE and the MME to MME MME Code key resides; service receiving the target base station in the source base station sends the target base station the MME MME Code group set, SI link between the MME and the target base station to the MME MME Code Code set properly represented.
6.如权利要求5所述的方法,其特征在于,所述源基站根据所述目标基站与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity (MME)间的SI链路状态信息,确认进行X2链路切换或SI链路切换,包括:当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的一个MME Code相同时,所述源基站获悉所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路正常,所述源基站与所述目标基站进行X2链路切换;当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的任意MME Code均不相同时,所述源基站获悉所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路异常,所述源基站与所述目标基站进行Sl链路切换。 6. The method according to claim 5, characterized in that, according to the source base station and the target base station SI services between a mobile management entity resides Mobile Management Entity (MME) at the source base station and the UE link state information, confirm handover or X2 link SI link switching, comprising: Code the MME when the MME serving the UE and the source base station and the MME resides in a collection MME Code Code the same, the source base station and the target base station learns the source base station and the serving SI link between the UE is camped normally MME, the handover source base station X2 link with the target base station; when Code MME of the MME serving the UE and the source base station resides with any of the MME MME Code Code set are not the same, the source base station was informed that the target base station serving the source and the base station and the link between the UE Sl MME resident abnormality, the source base station link switch Sl and the target base station.
7.如权利要求5或6所述的方法,其特征在于,所述源基站接收所述目标基站发送的服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的Sl链路正常,包括:当所述源基站和所述目标基站建立连接时,所述源基站接收所述目标基站发送的X2链路连接建立请求消息或X2链路连接建立响应消息,所述X2链路连接建立请求消息或所述X2链路连接建立响应消息包括服务于所述目标基站的MME群组的MME Code集合。 7. The method of claim 5 or claim 6, wherein the target base station receives the source MME serving base station transmits a group of the target base station set Code MME, the MME Code set represents the target MME Code MME and Sl normal links between base stations, comprising: when said source base station and the target base station to establish a connection, the source base station receiving the target base station sends an X2 link connection establishment link connection request message or the X2 setup response message, the X2 link connection establishment request message or the X2 link connection establishment response message includes a set of Code MME serving MME to the target base station group.
8.如权利要求5或6所述的方法,其特征在于,所述源基站接收所述目标基站发送的服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的Sl链路正常,包括:当所述源基站和所述目标基站间需要重新配置连接时,所述源基站接收所述目标基站发送的配置更新消息或配置更新确认消息,所述配置更新消息或所述配置更新确认消息包括服务于所述目标基站的MME群组的MME Code集合。 8. The method of claim 5 or claim 6, wherein the source base station receiving the target MME serving base station transmits a group of the target base station set Code MME, the MME Code set represents the target MME Code MME and Sl normal links between base stations, comprising: when the need to reconfigure the connection between the source base station and the target base station, the source base station receives configuration update sent by the target base station configuration update message or acknowledgment message, the MME Code configuration set update message or the configuration update confirm message to the target base station comprising the serving MME group.
9. 一种基站间的切换方法,其特征在于,包括:目标基站接收源基站发送的切换请求消息,用于将所述源基站提供服务的用户设备User Equipment (UE)切换至所述目标基站下的小区中;所述目标基站向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,用于所述源基站确认进行X2链路切换或Sl链路切换。 9. A method of switching between a base station, characterized by comprising: a handover target base station receives a request message sent by the source base station, a user equipment for the User Equipment to the source base station provides services (UE) to switch to the target base station in the cell; the target base station to the source base station transmits the target base station and the source base station serving the Sl and link state information between a mobile management entity resides mobile management entity (MME) UE , the source base station to confirm handover or X2 link link switch Sl.
10.如权利要求9所述的方法,其特征在于,还包括:所述目标基站经由所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息向所述源基站指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路异常,用于所述源基站终止与所述目标基站的X2链路切换,转而进行Sl链路切换。 10. The method according to claim 9, characterized in that, further comprising: the target base station via the Sl to the link state information between the MME and the target base station serving the source base station and the UE is camped indicating the source base station and the target base station serving the source base station and the link between the UE Sl MME resides abnormal, the X2 link to the source base station and the target base station terminating switch, switch performing link switch Sl.
11.如权利要求9或10所述的方法,其特征在于,所述目标基站向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile ManagementEntity(MME)间的Sl链路状态信息,包括:所述目标基站向所述源基站发送切换准备失败消息,所述切换准备失败消息包括所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息。 11. The method of claim 9 or claim 10, wherein the target base station to the source base station sends the target base station, and the source base station serving the UE and a mobile management entity resides Mobile Sl link state information between ManagementEntity (MME), comprising: the target base station to the source base station transmits a handover preparation failure message, including the handover preparation failure message to the target base station serving the source base station and the UE Sl link state information between the MME resides.
12.如权利要求9所述的方法,其特征在于,所述目标基站向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile ManagementEntity (MME)间的Sl链路状态信息,用于所述源基站确认进行X2链路切换或Sl链路切换,包括:所述目标基站向所述源基站发送服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的Sl链路正常。 12. The method according to claim 9, wherein the target base station to the source base station sends the target base station, and the source base station serving the UE and a mobile management entity resides Mobile ManagementEntity ( link state information between Sl MME), the source base station to confirm handover or X2 link Sl link switching, comprising: the target base station to the source base station sends the MME serving the target base station group Code set the MME, Sl MME link between the target base station and the MME MME Code Code set properly represented.
13.如权利要求12所述的方法,其特征在于,还包括:当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的一个MME Code相同时,所述目标基站与服务于所述源基站且所述UE驻留的MME间的Sl链路正常,所述目标基站与所述源基站进行X2链路切换;当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的任意MME Code均不相同时,所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路异常,所述目标基站与所述源基站进行SI链路切换。 13. The method according to claim 12, characterized in that, further comprising: Code the MME when the MME serving the UE and the source base station and the MME Code resident in a set with MME Code Meanwhile, the target base station to the source base station service and the link between the UE Sl MME normally resides, X2 link the target base station for handover to the source base station; when the serving the Code MME MME of the source base station and the UE is camped with any set of the MME Code Code MME are not the same, the target base station and the source base station serving the UE and MME resides between SI link error, the target base station and the handover source base station SI links.
14.如权利要求12或13所述的方法,其特征在于,所述目标基站向所述源基站发送服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的SI链路正常,包括:当所述源基站和所述目标基站建立连接时,所述目标基站向所述源基站发送X2链路连接建立请求消息或X2链路连接建立响应消息,所述X2链路连接建立请求消息或所述X2链路连接建立响应消息包括服务于所述目标基站的MME群组的MME Code集合。 14. The method according to the MME 1213 to MME Code set forth in claim, wherein the target base station set transmits Code MME serving MME to the target base station to the source base station group, SI normal link between the MME and the target base station represented by the Code, including which: when said source base station and the target base station to establish a connection establishment request message to the target base station to the source base station sends an X2 link connection or X2 link connection establishment response message, the X2 link connection establishment request message or MME Code set the X2 SETUP rESPONSE message includes a link group MME serving the target base station.
15.如权利要求12或13所述的方法,其特征在于,所述目标基站向所述源基站发送服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的SI链路正常,包括:当所述源基站和所述目标基站间需要重新配置连接时,所述目标基站向所述源基站发送配置更新消息或配置更新确认消息,所述配置更新消息或所述配置更新确认消息包括服务于所述目标基站的MME群组的MME Code 集合。 15. The method according to the MME 1213 to MME Code set forth in claim, wherein the target base station set transmits Code MME serving MME to the target base station to the source base station group, Code MME represents the link between the target base station SI normal, comprising: when a connection between the base station needs to re-configure the source base station and the target, the target base station to the source base station transmits a configuration update message or configuration update confirm message, the MME Code configuration set update message or the configuration update confirm message to the target base station comprising the serving MME group.
16. —种基站,其特征在于,包括:发送单元,用于向目标基站发送切换请求消息,以便将所述基站提供服务的用户设备User Equipment (UE)切换至所述目标基站下的小区中;处理单元,用于根据所述目标基站、与服务于所述基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的SI链路状态信息,确认进行X2链路切换或SI链路切换。 16. - kind of base station, comprising: transmitting means for transmitting the handover request message to a target base station, to the base station serving the user equipment User Equipment (UE) to a cell of the handover target base station ; processing unit, according to the target base station, and service information SI link state between the mobile management entity resides mobile management entity (MME) at the base station and the UE, a handover or X2 link confirm SI link switch.
17.如权利要求16所述的基站,其特征在于,还包括:确认单元,用于确认服务于所述基站的MME群组和服务于所述目标基站的MME群组具有相同的MME群组标识MME Group ID、及所述基站和所述目标基站间的X2链路正常,以便所述基站与所述目标基站进行X2链路切换。 17. The base station according to claim 16, characterized in that, further comprising: a confirmation unit for confirming an MME serving the base station and group services within the group have the same MME MME the target base station group identification MME Group ID, X2 and the link between the base station and the target base station normally, so that the base station handover and X2 link the target base station.
18.如权利要求17所述的基站,其特征在于,还包括:第一接收单元,用于接收所述目标基站发送的所述目标基站与服务于所述基站且所述UE驻留的MME间的SI链路状态信息,以便当所述目标基站与服务于所述基站且所述UE驻留的MME间的SI链路状态信息指示所述目标基站与服务于所述基站且所述UE驻留的MME 间的SI链路异常时,所述基站终止与所述目标基站间的X2链路切换,转而进行SI链路切换。 18. The base station according to claim 17, characterized in that, further comprising: a first receiving means for receiving the target base station and a base station serving the target MME residing in the base station and the UE link state information between the SI to SI when the link status between the MME and the target base station and the base station serving the UE is camped with information indicating the target base station and the base station serving the UE when the link between the MME SI resident abnormality, the base station terminates an X2 handover link between the target base station, a shift to the link switch SI.
19.如权利要求18所述的基站,其特征在于:所述第一接收单元,还用于接收所述目标基站发送的切换准备失败消息,所述切换准备失败消息包括所述目标基站与服务于所述基站且所述UE驻留的MME间的SI链路状态信肩、O 19. The base station according to claim 18, wherein: said first receiving means further for receiving the handover preparation failure message sent by the target base station, the handover preparation failure message service comprising the target base station to the base station and the UE SI status signal link between the MME shoulder resides, O
20.如权利要求16所述的基站,其特征在于,还包括:获取单元,用于获取服务于所述基站且所述UE驻留的MME的MME密钥MME Code ;及第二接收单元,用于接收所述目标基站发送的服务于所述目标基站的MME群组的MMECode集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的Sl链路正常。 20. The base station according to claim 16, characterized in that, further comprising: an acquisition unit for acquiring the serving base station and the MME MME MME Code key resides the UE; and a second receiving unit, the target base station for receiving a service transmitted in MMECode MME group set the target base station, Sl MME link between the target base station and the MME MME Code Code set properly represented.
21.如权利要求20所述的基站,其特征在于,还包括:判断单元,用于:当所述服务于所述基站且所述UE驻留的MME的MME Code与所述MME Code集合中的一个MME Code相同时,判断所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路正常,所述基站与所述目标基站进行X2链路切换;及当所述服务于所述基站且所述UE驻留的MME的MME Code与所述MME Code集合中的任意MME Code均不相同时,判断所述目标基站与服务于所述基站且所述UE驻留的MME间的Sl链路异常,所述基站与所述目标基站进行Sl链路切换。 21. The base station according to claim 20, characterized in that, further comprising: a determining unit, configured to: Code the MME when the MME serving the UE and the base station and the MME resides Code set Code a is the same MME, and determines the target base station to the serving base station and the link between the UE Sl MME normally resides, X2 link the base station and the handover target base station; and when the the MME serving the MME Code said base station and the UE is camped with any set of the MME Code Code MME are not the same, and determines the target base station and the base station serving the UE camping Sl MME link between the abnormal, the base station switches Sl and the target base station link.
22.如权利要求20或21所述的基站,其特征在于:所述第二接收单元,还用于当所述基站和所述目标基站建立连接时,接收所述目标基站发送的连接建立请求消息或连接建立响应消息,所述连接建立请求消息或所述连接建立响应消息包括服务于所述目标基站的MME群组的MME Code集合。 22. The base station of claim 20 or claim 21, wherein: the second receiving unit, further configured to, when the base station and the target base station to establish a connection, the target base station receiving the connection establishment request sent connection establishment message or a response message in response to establishing the connection establishment message comprises a Code set MME serving MME to the target base station or a group of the connection request message.
23.如权利要求20-22任一项所述的基站,其特征在于:所述第二接收单元,还用于当所述基站和所述目标基站间需要重新配置连接时,所述基站接收所述目标基站发送的配置更新消息或配置更新确认消息,所述配置更新消息或所述配置更新确认消息包括服务于所述目标基站的MME群组的MME Code集合。 23. The base station of any one of claims 20-22, wherein: the second receiving unit, further configured to, when the inter-base station and the target base station needs to be reconfigured connected to a receiving station configuring the target base station sends the configuration or update message update confirm message, the configuration or update message includes the configuration update confirm message Code group set MME MME serving the target base station.
24. —种基站,其特征在于,包括:接收单元,用于接收源基站发送的切换请求消息,以便将所述源基站提供服务的用户设备her Equipment (UE)切换至所述基站下的小区中;发送单元,用于向所述源基站发送所述基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity(MME)间的Sl链路状态信息,以便所述源基站确认进行X2链路切换或Sl链路切换。 24. - kind of a base station, characterized by comprising: receiving means for receiving a handover request message sent by the source base station, the source base station to the user equipment served her Equipment (UE) to switch to a cell under the base station in; Sl is the link state information between the sending unit, configured to send the base station to the source base station and the source base station serving the UE and a mobile management entity resides mobile management entity (MME), to the said source base station handover or X2 link confirm link switch Sl.
25.如权利要求M所述的基站,其特征在于,还包括:指示单元,用于经由所述基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息向所述源基站指示所述基站、与服务于所述源基站且所述UE驻留的MME间的Sl链路异常,用于所述源基站终止与所述基站间的X2链路切换,转而进行Sl链路切换。 25. The base station of claim M, wherein, further comprising: an instruction unit configured to link state information between Sl MME via the serving base station and the source base station and the UE is camped the base station indicating the source base station, the source base station to a service and the link between the UE Sl MME resides abnormal, X2 for the link between the source base station terminates the base station handover, transfer performing link switch Sl.
26.如权利要求25所述的基站,其特征在于:所述发送单元,还用于向所述源基站发送切换准备失败消息,所述切换准备失败消息包括所述基站与服务于所述源基站且所述UE驻留的MME间的Sl链路状态信息。 The base station serving the source of the transmission unit is further configured to send a handover preparation failure message to the source base station, the handover preparation failure message comprising: 26. The base station of claim 25, wherein link state information and the base station Sl MME resides between the UE.
27.如权利要求M所述的基站,其特征在于:所述发送单元,还用于向所述源基站发送服务于所述基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述基站间的Sl链路正常。 27. The base station of claim M, wherein: the sending unit is further configured to transmit to the source base station to the base station serving MME MME Code group set, the MME Code set Sl normal link between the base station and the MME on behalf of the MME Code.
28. —种通讯系统,其特征在于,包括:一源基站、及一目标基站;所述源基站,用于向目标基站发送切换请求消息,以便将所述基站提供服务的用户设备her Equipment(UE)切换至所述目标基站下的小区中;及根据所述目标基站、与服务于所述源基站且所述UE驻留的移动管理实体Mobile Management Entity (MME)间的SI链路状态信息,进行X2链路切换或SI链路切换;所述目标基站,用于接收源基站发送的切换请求消息;及向所述源基站发送所述目标基站、与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息。 28. - kind of communication system, comprising: a source base station and a target base station; the source base station, a request message to the target base station sends a handover to the base station serving the user equipment her Equipment ( UE) to a cell of the handover target base station; and at the source base station and the link status between the UE SI mobility management entity resides mobile management entity (MME) according to the target base station information, and services performs handover or X2 link SI link switch; the target base station, for receiving a handover request message sent by the source base station; and the source base station transmits to the target base station, and the serving base station and the source UE SI link state information between the MME resides.
29.如权利要求28所述的通讯系统,其特征在于:所述源基站,还用于确认服务于所述源基站的MME群组和服务于所述目标基站的MME 群组具有相同的MME群组标识MME Group ID、及所述基站和所述目标基站间的X2链路正堂巾O 29. The communication system according to claim 28, wherein: the source base station is further configured to confirm that the source base station serving MME and service group with the same MME MME to the target base station group between the group identifier MME group ID, and the base station and the target base station hall X2 link towel O
30.如权利要求29所述的通讯系统,其特征在于:所述源基站,还用于接收所述目标基站发送的所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息,以便当所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路异常时,终止与所述目标基站间的X2链路切换,转而进行SI链路切换。 30. The communication system according to claim 29, wherein: the source base station, the target base station is further configured to MME and the target base station receives the service sent to the source base station and the UE is camped link state information between the SI to SI when the link state information indicates that the target base station and the serving MME UE resides between the target and serving base station and the source base station to the source base station and the the when SI link error resides between said MME UE, X2 and terminating the link between the target base station handover, a shift to the link switch SI.
31.如权利要求28所述的通讯系统,其特征在于:所述源基站,还用于接收所述目标基站发送的服务于所述目标基站的MME群组的MME Code集合,所述MME Code集合中的MME Code所代表的MME与所述目标基站间的SI链路正堂巾O 31. The communication system according to claim 28, wherein: the source base station is further configured to set Code MME receives the target base station transmits service MME to the target base station group, the MME Code SI link between the MME and the target base station set in the MME Code represented hall towel O
32.如权利要求31所述的通讯系统,其特征在于:所述源基站,还用于当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的一个MME Code相同时,判断所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路正常,与所述目标基站进行X2链路切换;及当所述服务于所述源基站且所述UE驻留的MME的MME Code与所述MME Code集合中的任意MME Code均不相同时,判断所述目标基站与服务于所述源基站且所述UE驻留的MME 间的SI链路异常,与所述目标基站进行SI链路切换。 32. The communication system according to claim 31, wherein: the source base station, when the serving further to the source base station and the UE MME is the MME Code resident set MME Code Code in a same MME, and determines the target base station serving the source base station and the link between the UE SI MME normally reside, for switching X2 link with the target base station; and when the the source base station serving the UE and the MME is the MME Code resident in any of the MME Code MME Code set not the same, determining the target base station in service to the source base station and the UE SI link between abnormal left MME performs handover link SI and the target base station.
33.如权利要求28-30任一项所述的通讯系统,其特征在于:所述目标基站,还用于经由所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路状态信息向所述源基站指示所述目标基站与服务于所述源基站且所述UE驻留的MME间的SI链路异常,用于所述源基站终止于所述目标基站间的X2链路切换,转而进行SI 链路切换。 Inter-MME and the target base station via the source base station serving the UE and the target base station resides, further configured to: 33. The communication system according to any of claims 28-30, wherein SI indicates the link status information to the source base station and the target base station to the source base station serving the UE and the MME SI link between abnormal resides, the source base station to the target base station to terminate X2 link between the switch, a shift to the link switch SI.
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