WO2011110109A2

WO2011110109A2 - Connection establishing method, fault processing method, communication system and device thereof

Info

Publication number: WO2011110109A2
Application number: PCT/CN2011/072002
Authority: WO
Inventors: 于游洋; 胡伟华
Original assignee: 华为技术有限公司
Priority date: 2011-03-21
Filing date: 2011-03-21
Publication date: 2011-09-15
Also published as: CN102804910A; WO2011110109A3

Abstract

A connection establishing method, fault processing method, communication system and device thereof are disclosed. The methods include the following steps: an evolved Node B (eNB) obtains an address of a second Mobility Management Entity (MME), wherein the second MME has backup user service data of a first MME; when the first MME fails, the eNB performs a connection switch according to the address of the second MME, so that the second MME processes the user service of the first MME. Additionally, a communication system and device thereof are provided.

Description

连接建立方法、故障处理方法、通信***及相关设备技术领域 Connection establishment method, fault processing method, communication system and related equipment

本发明实施例涉及通信领域，尤其涉及一种连接建立方法、故障处理方法、通信***以及相关设备。 The embodiments of the present invention relate to the field of communications, and in particular, to a connection establishment method, a fault processing method, a communication system, and related devices.

背景技术 Background technique

为了应对无线宽带技术的挑战，保持第三代伙伴项目（3GPP, The 3rd Generation Partnership Project ) 网络的领先优势， 3 GPP在 2004年底制定了移动通信网络的长期演进计划（ LTE, Long Term Evolution ), 在此演进计划的指导下，定义了新的移动通信网络架构。 In order to meet the challenges of wireless broadband technology and maintain the leading edge of the 3GPP (The 3rd Generation Partnership Project) network, 3GPP developed the long-term evolution plan (LTE, Long Term Evolution) of mobile communication networks at the end of 2004. Under the guidance of this evolution plan, a new mobile communication network architecture is defined.

该架构比第二代、第三代网络更加扁平化，并且只保留了分组交换域（PS, Packet Switching ), 因此可以称为演进的 3GPP 分组交换域（Evolved 3GPP Packet Switched Domain ), 也可称之为演进的分组***（EPS, evolved packet system )。 The architecture is flatter than the second-generation and third-generation networks, and only the packet switching domain (PS, Packet Switching) is reserved. Therefore, it can be called an evolved 3GPP packet switched domain (Evolved 3GPP Packet Switched Domain). It is an evolved packet system (EPS).

在 EPS网络中，移动管理网元（MME, Mobility Management Entity ) 负责网络附属存储（NAS, Network Attached Storage )信令的处理，包括 NAS 信令加密以及漫游、跟踪功能，为用户设备分配临时身份标识，以及安全功能等；服务网关（SGW, Serving Gateway ) 负责本地的移动性锚点和合法监听等相关功能；数据网关（PGW, PDN Gateway )负责执行策略和计费以及与非 3GPP切换过程中的用户面锚点。 In the EPS network, the Mobility Management Entity (MME) is responsible for the processing of network attached storage (NAS) signaling, including NAS signaling encryption, roaming, and tracking functions, and assigning temporary identifiers to user equipments. , and security functions; the service gateway (SGW, Serving Gateway) is responsible for local mobility anchors and lawful interception and other related functions; the data gateway (PGW, PDN Gateway) is responsible for performing policy and charging and non-3GPP handover procedures. User plane anchor point.

现有技术中，当 MME发生故障时（例如， MME重启）， MME将丟失所服务用户设备（UE, User Equipment )的上下文数据。 SGW通过 GTP Echo探测消息获知 MME复位或者重启， SGW删除重启 MME所服务的 UE全部承载，并通知 PGW。 PGW同样删除故障 MME所服务 UE的承载信息。 In the prior art, when the MME fails (for example, the MME restarts), the MME will lose the context data of the served user equipment (UE, User Equipment). The SGW learns that the MME is reset or restarted by using the GTP Echo detection message, and the SGW deletes all the UEs served by the MME, and notifies the PGW. The PGW also deletes the bearer information of the UE served by the faulty MME.

当 UE发起网络侧连接时， UE发送 NAS消息（例如， Service Request ) 到复位或者重启 MME,由于 MME已丟失上下文，ΜΜΕ向 UE返回拒绝消息。 UE重新发起附着流程，接入网络侧为 UE选择其他正常节点重新附着。 When the UE initiates the network side connection, the UE sends a NAS message (for example, Service Request) to reset or restart the MME, and returns a reject message to the UE because the MME has lost the context. The UE re-initiates the attach procedure, and the access network side selects other normal nodes to reattach for the UE.

现有技术的方案中，若 ΜΜΕ出现故障，当 UE发起网络侧连接时，都需要重新附着（re-attach ), 进而重新建立相关承载，重新完成到网络的注册，然后重新发起主叫或者被叫业务，这样的操作过程将产生较长的业务时延，影响了业务的连续性。 In the prior art solution, if a fault occurs, when the UE initiates the network side connection, it needs to re-attach, and then re-establish the relevant bearer, and complete the registration to the network again. After re-initiating the calling or called service, such an operation process will result in a long service delay, which affects the continuity of the service.

发明内容 Summary of the invention

本发明实施例提供了一种连接建立方法、故障处理方法、通信***以及相关设备，能够降低业务时延、保证业务连续性。 The embodiments of the present invention provide a connection establishment method, a fault processing method, a communication system, and related equipment, which can reduce service delay and ensure service continuity.

本发明实施例提供的故障处理方法，包括：演进基站 eNB获取第二移动性管理实体 MME的地址，所述第二 MME上备份有第一 MME上的用户业务数据；当所述第一 MME出现故障时，所述 eNB按照所述第二 MME的地址进行连接切换，使得所述第二 MME处理所述第一 MME上的用户业务。 The fault processing method provided by the embodiment of the present invention includes: the evolved base station eNB acquires an address of the second mobility management entity MME, and the second MME backs up user service data on the first MME; when the first MME appears In the event of a failure, the eNB performs connection switching according to the address of the second MME, so that the second MME processes the user service on the first MME.

本发明实施例提供的故障处理方法，包括：第二移动性管理实体 MME备份第一 MME上的用户业务数据；当第一 MME出现故障时，第二 MME与 eNB 进行连接切换，处理所述第一 MME上的用户业务。 The fault processing method provided by the embodiment of the present invention includes: the second mobility management entity MME backs up user service data on the first MME; when the first MME fails, the second MME performs connection switchover with the eNB, and processes the User service on an MME.

本发明实施例提供的基站，包括：获取单元，用于获取第二 MME的地址，所述第二 MME上备份有第一 MME上的用户业务数据；切换单元，用于当所述第一移动性管理实体 MME出现故障时，按照所述第二 MME的地址进行连接切换，使得所述第二 MME处理所述第一 MME上的用户业务。 The base station provided by the embodiment of the present invention includes: an acquiring unit, configured to acquire an address of the second MME, where the second MME backs up user service data on the first MME; and a switching unit, configured to be used as the first mobile When the MME of the MME is faulty, the connection is switched according to the address of the second MME, so that the second MME processes the user service on the first MME.

本发明实施例提供的移动性管理实体，包括：同步单元，用于备份第一 MME上的用户业务数据；连接切换单元，用于当第一 MME出现故障时，与 eNB进行连接切换，以处理所述第一 MME上的用户业务。 The mobility management entity provided by the embodiment of the present invention includes: a synchronization unit, configured to back up user service data on the first MME; and a connection switching unit, configured to perform connection switching with the eNB when the first MME fails. User traffic on the first MME.

本发明实施例提供的移动性管理实体，包括：第一交互单元，用于与第二 The mobility management entity provided by the embodiment of the present invention includes: a first interaction unit, configured to be used with the second

MME交互配置信息；第一接收单元，用于接收 eNB发送的 SCTP连接建立请求；第一响应单元，用于向所述 eNB发送 SCTP连接建立响应，所述 SCTP 连接建立响应中包含第一 MME的地址以及第二 MME的地址。 MME interaction configuration information; a first receiving unit, configured to receive an SCTP connection establishment request sent by the eNB; a first response unit, configured to send an SCTP connection setup response to the eNB, where the SCTP connection setup response includes the first MME The address and the address of the second MME.

本发明实施例提供的通信***，包括：演进基站 eNB,用于获取第二 MME 的地址，当第一 MME出现故障时，所述 eNB按照所述第二 MME的地址进行连接切换；所述第二 MME, 用于备份所述第一 MME上的用户业务数据，当所述第一 MME 出现故障时，与 eNB进行连接切换，以处理所述第一 MME 上的用户业务。 The communication system provided by the embodiment of the present invention includes: an evolved base station eNB, configured to acquire an address of the second MME, and when the first MME fails, the eNB performs connection switching according to the address of the second MME; The second MME is configured to back up user service data on the first MME, and when the first MME fails, perform connection switching with the eNB to process user services on the first MME.

从以上技术方案可以看出，本发明实施例具有以下优点：本发明实施例中 , eNB可以获取到第二 MME的地址 , 当第一 MME出现故障时， eNB根据该第二 MME的地址进行连接切换，使得第二 MME处理第一 MME上的用户业务，由于第二 MME上备份有第一 MME上的用户业务数据，所以 UE并不会感觉到 MME出现了故障，无需重新进行附着，因此能够降低业务时延、保证业务连续性。 As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages: In the embodiment of the present invention, the eNB may obtain the address of the second MME, and when the first MME fails, the eNB performs connection switching according to the address of the second MME, so that the second MME processes the user service on the first MME, because The user data of the first MME is backed up on the second MME. Therefore, the UE does not feel that the MME has a fault and does not need to re-attach. Therefore, the service delay can be reduced and the service continuity can be ensured.

附图说明 DRAWINGS

图 1为本发明连接建立方法一个实施例示意图； 1 is a schematic diagram of an embodiment of a connection establishment method according to the present invention;

图 2为本发明连接建立方法另一实施例示意图； 2 is a schematic diagram of another embodiment of a connection establishment method according to the present invention;

图 3为本发明故障处理方法一个实施例示意图； 3 is a schematic diagram of an embodiment of a fault processing method according to the present invention;

图 4为本发明故障处理方法另一实施例示意图； 4 is a schematic diagram of another embodiment of a fault processing method according to the present invention;

图 5为本发明故障处理方法另一实施例示意图； FIG. 5 is a schematic diagram of another embodiment of a fault processing method according to the present invention; FIG.

图 6为本发明故障处理方法另一实施例示意图； 6 is a schematic diagram of another embodiment of a fault processing method according to the present invention;

图 7为本发明故障处理方法另一实施例示意图； 7 is a schematic diagram of another embodiment of a fault processing method according to the present invention;

图 8为本发明故障处理方法另一实施例示意图； 8 is a schematic diagram of another embodiment of a fault processing method according to the present invention;

图 9为本发明演进基站一个实施例示意图； 9 is a schematic diagram of an embodiment of an evolved base station according to the present invention;

图 10为本发明移动性管理实体一个实施例示意图； 10 is a schematic diagram of an embodiment of a mobility management entity according to the present invention;

图 11为本发明移动性管理实体另一实施例示意图； 11 is a schematic diagram of another embodiment of a mobility management entity according to the present invention;

图 12为本发明通信***一个实施例示意图。 FIG. 12 is a schematic diagram of an embodiment of a communication system according to the present invention.

具体实施方式 detailed description

请参阅图 1 , 本发明连接建立方法一个实施例包括： Referring to FIG. 1, an embodiment of the connection establishment method of the present invention includes:

101、第一 MME与第二 MME交互配置信息； 101. The first MME and the second MME exchange configuration information.

本实施例中，第一 MME与其第二 MME可以交互各自的地址、端口号等配置信息，使得相互进行通信。 In this embodiment, the first MME and its second MME can exchange configuration information such as respective addresses and port numbers, so as to communicate with each other.

需要说明的是，针对某个具体业务，为该业务提供服务，并进行数据处理的 MME为第一 MME, 对第一 MME上的用户业务数据进行实时备份，并在第一 MME出现故障时接替第一 MME继续工作的 MME为第二 MME。 It should be noted that, for a specific service, the MME that provides services for the service and performs data processing is the first MME, and the user service data on the first MME is backed up in real time, and takes over when the first MME fails. The MME that the first MME continues to work is the second MME.

本实施例中，某第一 MME的第二 MME可以由管理员或管理设备指定，也可以由第一 MME 自行选择，例如可以选择负载较低的 MME作为第二 MME, 或物理距离较近的 MME作为第二 MME, 或空闲资源较多的 MME作为第二 MME, 等等，具体的确定方式此处不作限定。 In this embodiment, the second MME of a certain MME may be specified by an administrator or a management device. The MME may select the MME as the second MME, or the MME with the lower physical distance as the second MME, or the MME with more idle resources as the second MME, etc. The method of determining is not limited herein.

其中，在本发明的其他实施例中，第一 MME也可以叫做主用 MME, 第二 MME也可以叫做备用 MME。 In other embodiments of the present invention, the first MME may also be called an active MME, and the second MME may also be called a standby MME.

第一 MME和第二 MME确定后，第一 MME和第二 MME可以相互交互，实时获取对方的配置信息 , 如第一 MME获取第二 MME的标识 , 第二 MME 可以获取第一 MME上的配置信息等。 After the first MME and the second MME determine, the first MME and the second MME can mutually acquire the configuration information of the other party in real time, for example, the first MME acquires the identifier of the second MME, and the second MME can obtain the configuration on the first MME. Information, etc.

102、第一 MME接收 eNB发送的流控制传输协议（ SCTP, Stream Control Transmission Protocol )连接建立请求； 102. The first MME receives a Flow Control Transmission Protocol (SCTP) connection establishment request sent by the eNB.

当 eNB需要与 MME建立 SCTP连接以进行用户业务时， eNB可以向第一 MME发送 SCTP连接建立请求，该 SCTP连接建立请求中可以包含本端点传送地址、本端启动标签 Tag-eNB、最大出局流数量及允许的最大入局流数量等信息。 When the eNB needs to establish an SCTP connection with the MME to perform the user service, the eNB may send an SCTP connection establishment request to the first MME, where the SCTP connection establishment request may include the local terminal transmission address, the local start label Tag-eNB, and the maximum outgoing stream. Information such as the number and the maximum number of incoming flows allowed.

本实施例中， eNB中可以静态配置有第一 MME的地址，例如， eNB中可以存储有各 MME的地址，当 eNB接收到用户业务请求时，根据业务的具体类型或者是服务质量信息等参数确定为本次业务提供服务的 MME, 并在本地数据库中查询该 MME的地址。 In this embodiment, the address of the first MME may be statically configured in the eNB. For example, the eNB may store the address of each MME. When the eNB receives the user service request, the eNB may use the specific type of the service or the quality of service information. The MME that provides the service for the service is determined, and the address of the MME is queried in the local database.

可以理解的是，本实施例中，也可以由其他的网元将第一 MME的地址发送给 eNB, 例如，当 eNB接收到用户业务请求时，确定业务的具体类型或者是服务质量信息等参数，并将这些参数发送给网络侧的第三方网元，由该第三方网元确定为本次业务提供服务的 MME, 并将该 MME的地址发送至 eNB。 It can be understood that, in this embodiment, the address of the first MME may be sent to the eNB by other network elements. For example, when the eNB receives the user service request, the specific type of the service or the quality of service information is determined. And sending the parameters to the third-party network element on the network side, where the third-party network element determines the MME serving the service, and sends the address of the MME to the eNB.

103、第一 MME向 eNB发送 SCTP连接建立响应。 103. The first MME sends an SCTP connection setup response to the eNB.

第一 MME收到 eNB发送的 SCTP连接建立请求后，建立与 eNB之间的 SCTP连接，向 eNB发送 SCTP连接建立响应。 After receiving the SCTP connection establishment request sent by the eNB, the first MME establishes an SCTP connection with the eNB, and sends an SCTP connection establishment response to the eNB.

该 SCTP连接建立响应的目的地址为 eNB的地址，该 SCTP连接建立响应中包含参数有 MME的端点传送地址、本端启动标签 Tag-MME,状态 Cookie、最大入局流与最大出局流数量等。 The destination address of the SCTP connection establishment response is the address of the eNB, and the SCTP connection establishment response includes the MME's endpoint transmission address, the local startup label Tag-MME, the state cookie, the maximum incoming stream, and the maximum outgoing stream number.

需要说明的是，本实施例中，第一 MME发送的 MME的端点传送地址不仅包含第一 MME的地址，同时也包含第二 MME的地址，如第一 MME向 eNB发送的消息中包含两个字段，分别代表第一 MME的地址和第二 MME的地址， eNB 根据接收到的消息中的的字段的不同，确定第一 MMNE 和第二 MMNE的地址。 It should be noted that, in this embodiment, the endpoint of the MME sent by the first MME does not transmit the address. The address of the first MME is included, and the address of the second MME is also included. For example, the message sent by the first MME to the eNB includes two fields, which respectively represent the address of the first MME and the address of the second MME, and the eNB receives the The fields in the message are different, and the addresses of the first MMNE and the second MMNE are determined.

通过上述的过程即可建立 MME与 eNB之间的 SCTP连接，由于 eNB接收到了第一 MME以及第二 MME的地址，则 eNB会将这两个地址分别作为同一个逻辑 MME (例如 MME a ) 的两个目的地址 , 当第一 MME出现故障时 , eNB则可以切换到另一个目的地址，使得第二 MME处理第一 MME上的用户业务，从而降低业务时延、保证业务连续性。 The SCTP connection between the MME and the eNB can be established through the foregoing process. Since the eNB receives the addresses of the first MME and the second MME, the eNB uses the two addresses as the same logical MME (for example, MME a ). The two destination addresses, when the first MME fails, the eNB can switch to another destination address, so that the second MME processes the user service on the first MME, thereby reducing service delay and ensuring service continuity.

其中，该逻辑 MME可以看做是第一 MME和第二 MME的合成体，即对于 eNB来说 ,不管是第一 MME还是第二 MME ,都是与该 eNB相连接的 MME , eNB不管与第一 MME还是与第二 MME建立连接，都可以看做是与逻辑 MME 建立连接。因此，对 eNB来说，第一 MME和第二 MME均可以是逻辑 MME。 The logical MME can be regarded as a combination of the first MME and the second MME, that is, for the eNB, whether it is the first MME or the second MME, the MME is connected to the eNB, and the eNB does not care. An MME still establishes a connection with the second MME, and can be regarded as establishing a connection with the logical MME. Therefore, for the eNB, both the first MME and the second MME may be logical MMEs.

为便于理解，下面对本发明连接建立方法进行详细描述，请参阅图 2, 本发明实施例中连接建立方法另一实施例包括： For ease of understanding, the connection establishment method of the present invention is described in detail below. Referring to FIG. 2, another embodiment of the connection establishment method in the embodiment of the present invention includes:

201、第一 MME和第二 MME进行信息交互，获取对方互联网协议（ IP, Internet Protocol ) 地址以及端口号等； 201. The first MME and the second MME perform information interaction, and obtain an IP address (IP, Internet Protocol) address and a port number of the other party;

在本发明实施例中，第一 MME可以是 MME1 ,第二 MME可以是 MME2 MME1获取 MME2的标识，本实施例中， MME1可以从其他网元处获取其 MME2的标识 , MME1也可以根据一定策略自主选择 MME2。 In the embodiment of the present invention, the first MME may be the MME1, and the second MME may be the MME2 MME1 to obtain the identifier of the MME2. In this embodiment, the MME1 may obtain the identifier of the MME2 from other network elements, and the MME1 may also be based on a certain policy. Choose MME2 autonomously.

本实施例中，某第一 MME的第二 MME可以由管理员或管理设备指定，则指定的第二 MME的标识会被发送至第一 MME。 In this embodiment, the second MME of a certain MME may be specified by an administrator or a management device, and the identifier of the specified second MME is sent to the first MME.

除此之外，也可以由第一 MME自行选择第二 MME, 例如可以选择负载较低的 MME作为第二 MME,或物理距离较近的 MME作为第二 MME,或空闲资源较多的 MME作为第二 MME, 等等，具体的确定方式此处不作限定。 In addition, the second MME may be selected by the first MME. For example, the MME with the lower load may be selected as the second MME, or the MME with the closest physical distance may be the second MME, or the MME with more idle resources. The second MME, and the like, the specific determination manner is not limited herein.

MME1将其 SCTP端点传送地址（本实施例中可以为 MME1的 IP地址 IP1 与端口号）发送给 MME2。此夕卜，ΜΜΕΙ还可以将负载能力通知 ΜΜΕ2, ΜΜΕ2 可以基于 MME1的负载能力为 MME1预留相应备份资源。 ΜΜΕ2保存 MME1 的端点传送地址，并将自身的 IP地址 IP2发送给 MME1。 MMEl和 MME2交互配置信息后，生成逻辑 MME实体 MME a, 可以看做该逻辑 MMEa是一个虚拟的实体，包含 MME1 , 以及 MME2中备份 MME1 数据的部分，该逻辑 MME a 的 MME端点传送地址包含两个地址，一个为 MME1的 IP地址 IP1 , 另一个为第二 MME2的 IP地址 IP2。 The MME 1 transmits its SCTP endpoint transport address (which may be the IP address IP1 and port number of the MME 1 in this embodiment) to the MME 2. In addition, the load capacity can also be notified to ΜΜΕ2, and ΜΜΕ2 can reserve corresponding backup resources for MME1 based on the load capacity of MME1. ΜΜΕ2 saves the endpoint transport address of MME1, and sends its own IP address IP2 to MME1. After the MME1 and the MME2 exchange configuration information, the logical MME entity MME a is generated, which can be regarded as a virtual entity, including the MME1, and the part of the MME2 that backs up the MME1 data, where the MME endpoint transmission address of the logical MME a includes two Addresses, one is the IP address IP1 of MME1, and the other is the IP address IP2 of the second MME2.

可以理解， MME a上附着用户设备的用户设备数据在 MME1上处理，而需要备份的用户设备数据在 MME2上存储。 It can be understood that the user equipment data of the user equipment attached to the MME a is processed on the MME 1, and the user equipment data that needs to be backed up is stored on the MME 2.

由于 MME2在 MME1运行正常时，不负责用户业务而只作数据备份，因此，为了不浪费备设备资源可以使其作为其他逻辑 MME实体的主设备。 MME2 is not responsible for user services but only for data backup when MME1 is running normally. Therefore, it can be used as the master device of other logical MME entities in order not to waste standby device resources.

202、 MME1接收 eNB发送的 SCTP连接建立请求； 202. The MME1 receives an SCTP connection establishment request sent by the eNB.

当 eNB需要与 MME a建立 SCTP连接以进行用户业务时， eNB可以向 When the eNB needs to establish an SCTP connection with the MME a to perform user services, the eNB may

MME1发送 SCTP连接建立请求，该 SCTP连接建立请求中可以包含本端点传送地址、本端启动标签 Tag-eNB、最大出局流数量及允许的最大入局流数量等信息。 The MME1 sends an SCTP connection establishment request, and the SCTP connection establishment request may include information such as the local end transmission address, the local start label Tag-eNB, the maximum number of outgoing flows, and the maximum number of incoming flows allowed.

本实施例中， eNB中可以静态配置有 MME1的地址，也可以由其他的网元将 MME1的地址发送给 eNB, 具体此处不作限定。 In this embodiment, the address of the MME1 may be statically configured in the eNB, and the address of the MME1 may be sent to the eNB by other network elements, which is not limited herein.

203、 MME1向 eNB发送 SCTP连接建立响应。 203. The MME1 sends an SCTP connection setup response to the eNB.

MME1收到 eNB发送的 SCTP连接建立请求后，向 eNB发送 SCTP连接建立响应。 After receiving the SCTP connection setup request sent by the eNB, the MME1 sends an SCTP connection setup response to the eNB.

该 SCTP连接建立响应的目的地址为 eNB的地址，该 SCTP连接建立响应中包含参数有 MME a的端点传送地址、本端启动标签 Tag-MME、状态 Cookie、最大入局流与最大出局流数量等。 The destination address of the SCTP connection establishment response is the address of the eNB, and the SCTP connection establishment response includes the endpoint transmission address of the MME a, the local start label Tag-MME, the state cookie, the maximum incoming stream, and the maximum outgoing stream number.

需要说明的是，本实施例中 , MME1发送的 MME a的端点传送地址不仅包含 MME1的 IP地址 IP1 , 同时也包含 MME2的 IP地址 IP2, 如果该连接建立响应消息中包含第一字段和第二字段，其中第一字段中包含的 IP地址指示为 MME1的 IP地址，第二字段中包含的 IP地址指示为 MME2的 IP地址。 It should be noted that, in this embodiment, the endpoint transmission address of the MME a sent by the MME1 includes not only the IP address IP1 of the MME1 but also the IP address IP2 of the MME2, if the connection establishment response message includes the first field and the second a field, where the IP address included in the first field is indicated as the IP address of the MME1, and the IP address included in the second field is indicated as the IP address of the MME2.

204 ~ 205、 Cookie验证过程； 204 ~ 205, cookie verification process;

eNB收到 MME1发送的状态 Cookie后，在 Cookie Echo消息中将状态 Cookie原封带回给 MME1。 After receiving the status cookie sent by MME1, the eNB brings the status cookie back to MME1 in the Cookie Echo message.

MME1进行 Cookie验证，验证通过后建立与 eNB之间的 SCTP偶联，并发送 Cookie ACK消息给 eNB , 通知 eNB SCTP连接建立成功。 MME1 performs cookie verification, and after verification, establishes SCTP coupling with the eNB, and A cookie ACK message is sent to the eNB, and the eNB is notified that the SCTP connection is successfully established.

206、 MME将 SCTP偶联信息通知 MME; 206. The MME notifies the MME of the SCTP coupling information.

MME1与 eNB建立 SCTP连接后，将 SCTP连接所需参数、偶联端点所需参数及对端每个传送地址所需参数发送给 MME2。 After establishing the SCTP connection with the eNB, the MME1 sends the parameters required for the SCTP connection, the parameters required for the coupled endpoint, and the parameters required for each transport address of the opposite end to the MME2.

其中 SCTP连接所需参数包括密钥、本端点连接地址列表等。偶联端点所需参数包括本端与对端验证标签、对端传送地址列表、偶联的路径最大传输单元（PMTU, Path Maximum Transmission Unit ), 例如对端端点所有传送地址中发现的最小 PMTU等。对端传送地址所需参数包括该目的地址定时器、目的地当前状态等。 The parameters required for the SCTP connection include a key, a list of the endpoint connection addresses, and the like. The parameters required for the coupled endpoint include the local and peer authentication labels, the peer transport address list, and the coupled path maximum transmission unit (PMTU), such as the minimum PMTU found in all the transport addresses of the peer endpoint. . The parameters required for the peer to transmit the address include the destination address timer, the current state of the destination, and so on.

本实施例中， SCTP连接建立后，当某条通路空闲时， eNB可以产生相应的心跳检测消息发送给 MME1以及 MME2 , MME1接收到该心跳检测消息后 , 则会对该心跳检测消息进行应答，而 MME2接收到该心跳检测消息时，可以有两种处理方式： In this embodiment, after the SCTP connection is established, when a certain path is idle, the eNB may generate a corresponding heartbeat detection message and send the message to the MME1 and the MME2. After receiving the heartbeat detection message, the MME1 responds to the heartbeat detection message. When the MME2 receives the heartbeat detection message, there are two ways of processing:

( 1 ) 不对该心跳检测消息进行应答： (1) Do not respond to the heartbeat detection message:

eNB在尝试最大上限次数的心跳检测，且没有收到 MME2回应的情况下，将在 eNB上将该 MME2的 IP2地址设置为 "未激活" 状态，虽后续继续发送心跳探测信令，但错误计数不再累计增加。但是，如果 MME2发现 MME1故障时，则开始响应 eNB发送的心跳检测信令。 eNB收到心跳检测回复，认为该地址可用后将 MME2的 IP2标记为 "激活态"。 When the eNB attempts the heartbeat detection of the maximum number of times and does not receive the MME2 response, the IP2 address of the MME2 is set to the "inactive" state on the eNB, although the heartbeat detection signaling is continued to be sent, but the error is counted. No longer cumulatively increased. However, if MME2 finds that MME1 is faulty, it starts responding to heartbeat detection signaling sent by the eNB. The eNB receives a heartbeat detection reply and considers that the IP2 of MME2 is marked as "active" after the address is available.

( 2 )对该心跳检测消息进行应答： (2) responding to the heartbeat detection message:

MME2应答 eNB发来的心跳检测消息。因此， eNB上显示该 MME2的 IP2 处于激活状态。 The MME2 responds to the heartbeat detection message sent by the eNB. Therefore, the IP2 of the MME2 is displayed on the eNB to be in an active state.

eNB根据心跳检测的结果维护 MME a标识（ MME a GUMMEI )与目的地址对应关系 , 本实施例中， MME a标识对应的目的地 IP地址包括 MME1 的 IP1与 MME2的 IP2。上述两个地址可同时处于 "激活态"，或只有 MME1 的 IP1地址处于 "激活态"。 The eNB maintains the MME a identifier (MME a GUMMEI) and the destination address according to the result of the heartbeat detection. In this embodiment, the MME a identifier corresponding to the destination IP address includes the IP1 of the MME1 and the IP2 of the MME2. The above two addresses can be in the "active state" at the same time, or only the IP1 address of MME1 is in the "active state".

207、 eNB发送 S1连接建立请求消息 SI Setup Request给 MME1；该 SI Setup Request消息中包含 eNB设备级参数，如 Global eNB ID、 eNB Name及该 eNB支持的 TAs区等。 208、 MME1发送 SI Setup Response消息给 eNB; 207. The eNB sends an S1 connection setup request message (SI Setup Request) to the MME1. The SI Setup Request message includes an eNB device level parameter, such as a Global eNB ID, an eNB Name, and a TAs area supported by the eNB. 208. The MME1 sends an SI Setup Response message to the eNB.

本实施例中，该 SI Setup Response 消息包含 MME a 标识（MME a GUMMEI )、 MME负载权重因子（ Relative MME Capacity )等。 In this embodiment, the SI Setup Response message includes an MME a identifier (MME a GUMMEI ), an MME load weight factor ( Relative MME Capacity ), and the like.

209、 MME将 eNB信息通知 MME。 209. The MME notifies the MME of the eNB information.

MME1将 eNB设备级参数发送给 MME2存储，例如可以转发 SI Setup The MME1 sends the eNB device level parameters to the MME2 storage, for example, SI Setup can be forwarded.

Request消息给 MME2, 使得 MME2获得相应 eNB设备级参数。 The Request message is sent to the MME2, so that the MME2 obtains the corresponding eNB device level parameter.

本实施例中，步骤 208以及 209并没有严格的先后顺序，可以先执行步骤 208, 也可以先执行步骤 209, 或同时执行步骤 208以及 209, 具体此处不作限定。 In this embodiment, the steps 208 and 209 are not strictly sequential, and the step 208 may be performed first, or the step 209 may be performed first, or the steps 208 and 209 may be performed at the same time, which is not limited herein.

本实施例中，由物理上独立的两个 MME设备各自分配部分资源组成单一逻辑 MME实体。此逻辑 MME与接入网络侧建立一条 SCTP连接，也就是说，对于 eNB而言，只建立了一条 SCTP连接，该 SCTP连接的对象是逻辑 MME, 该逻辑 MME可以具有两个目的地址 , 分别是第一 MME的地址和第二 MME 的地址。 In this embodiment, each of the physically independent two MME devices allocates a part of resources to form a single logical MME entity. The logical MME establishes an SCTP connection with the access network side. That is, for the eNB, only one SCTP connection is established. The object of the SCTP connection is a logical MME, and the logical MME may have two destination addresses, which are respectively The address of the first MME and the address of the second MME.

两个独立的 MME中，一个为第一 MME, 负责其上附着用户设备的业务处理，另一个为第二 MME, 负责实时备份主设备上附着用户设备的上下文数据。在第一 MME正常的情况下，第二 MME只作为用户设备数据的存储设备。当逻辑 MME实体加入网络后 ,接入网络侧获得该 MME传送地址 ,即 MME IP 地址加端口号。其中 MME传送地址包括第一 MME与第二 MME的多个 IP 地址及唯一端口号，因此具有多归属特性。 One of the two independent MMEs is the first MME, which is responsible for the service processing of the user equipment attached thereto, and the other is the second MME, which is responsible for real-time backup of the context data of the user equipment attached to the master device. In the case that the first MME is normal, the second MME is only used as a storage device for user equipment data. After the logical MME entity joins the network, the access network side obtains the MME transport address, that is, the MME IP address plus the port number. The MME transmission address includes multiple IP addresses and unique port numbers of the first MME and the second MME, and thus has a multi-homing feature.

当第一 MME故障后，接入网络侧可以基于 SCTP多归属特性将第一 MME 上的 S1AP连接切换到第二 MME, 并由第二 MME处理用户业务，保证用户业务连续性。 After the first MME is faulty, the access network side can switch the S1AP connection on the first MME to the second MME based on the SCTP multi-homing feature, and the second MME processes the user service to ensure user service continuity.

下面介绍本发明故障处理方法，请参阅图 3 , 本发明故障处理方法一个实施例包括： The following describes the fault processing method of the present invention. Referring to FIG. 3, an embodiment of the fault processing method of the present invention includes:

301、 eNB获取第二 MME的地址； 301. The eNB acquires an address of the second MME.

当 SCTP连接建立完成之后， eNB可以获取第二 MME的地址，该第二 MME上备份有第一 MME上的用户业务数据。 After the establishment of the SCTP connection, the eNB can obtain the address of the second MME, and the second MME backs up the user service data on the first MME.

eNB可以通过多种方式获取第二 MME的地址，例如基于 SCTP多归属的特性，或者是根据本地静态配置的对应关系，或者是由其他网元告知 eNB, 具体此处不作限定。 The eNB may obtain the address of the second MME in multiple manners, for example, based on SCTP multi-homing The feature is either a local static configuration or an eNB. The eNB is not limited.

其中，第一 MME上的用户业务数据包括第一 MME所服务的用户设备的相关数据，包括但不限于用户设备的标识信息，承载上下文信息，鉴权数据等。 The user service data on the first MME includes related data of the user equipment served by the first MME, including but not limited to the identification information of the user equipment, bearer context information, authentication data, and the like.

302、若第一 MME出现故障时， eNB按照第二 MME的地址进行连接切换。 302. If the first MME fails, the eNB performs connection switching according to the address of the second MME.

eNB获取到第二 MME的地址之后，当第一 MME出现故障时 , eNB可以基于该第二 MME的地址进行连接切换，使得原先在 eNB与第一 MME之间建立的连接切换到 eNB与第二 MME之间 , 从而使得第二 MME处理第一 MME 上的用户业务。 After the eNB acquires the address of the second MME, when the first MME fails, the eNB may perform connection handover based on the address of the second MME, so that the connection established between the eNB and the first MME is switched to the eNB and the second. Between the MMEs, so that the second MME processes the user service on the first MME.

其中，第二 MME处理第一 MME上的用户业务包括：第二 MME更新其与原 SGW之间的控制面承载参数，及与 eNB之间的 S1AP连接等，并到 HSS 注册第二 MME标识等。 The second MME processing the user service on the first MME includes: the second MME updates the control plane bearer parameter between the MME and the original SGW, and the S1AP connection with the eNB, and registers the second MME identity with the HSS. .

上面从 eNB的角度对本发明故障处理方法进行了描述，下面从 MME的角度对本发明故障处理方法进行描述，请参阅图 4, 本发明故障处理方法另一实施例包括： The fault handling method of the present invention is described above from the perspective of the eNB. The fault processing method of the present invention is described from the perspective of the MME. Referring to FIG. 4, another embodiment of the fault processing method of the present invention includes:

401、第二 MME备份第一 MME上的用户业务数据； 401. The second MME backs up user service data on the first MME.

在第一 MME发生故障之前，第一 MME从 eNB得到的用户业务数据均会实时向第二 MME进行同步。 Before the first MME fails, the user service data obtained by the first MME from the eNB is synchronized to the second MME in real time.

402、当第一 MME出现故障时，第二 MME与 eNB进行连接切换。 402. When the first MME fails, the second MME performs a connection switch with the eNB.

若第一 MME出现故障，则 eNB可以获取第二 MME的地址，该第二 MME 上备份有第一 MME上的用户业务数据。 If the first MME fails, the eNB can obtain the address of the second MME, and the second MME backs up the user service data on the first MME.

eNB可以通过多种方式获取第二 MME的地址，例如基于 SCTP多归属的特性，或者是根据本地静态配置的对应关系，或者是由其他网元告知 eNB, 具体此处不作限定。 The eNB can obtain the address of the second MME in multiple manners, for example, based on the SCTP multi-homing feature, or the corresponding relationship according to the local static configuration, or the eNB is informed by other network elements, which is not limited herein.

eNB获取到第二 MME的地址之后，可以基于该第二 MME的地址进行连接切换，使得原先在 eNB与第一 MME之间建立的连接切换到 eNB与第二 MME之间，从而使得第二 MME处理第一 MME上的用户业务。 After the eNB obtains the address of the second MME, the connection may be switched based on the address of the second MME, so that the connection established between the eNB and the first MME is switched between the eNB and the second MME, so that the second MME is obtained. Processing user traffic on the first MME.

其中， eNB将与第一 MME建立的 SCTP连接中的 MME的地址修改为第二 MME的地址 , 即完成了连接切换。 The eNB modifies the address of the MME in the SCTP connection established with the first MME to be the first The address of the second MME, that is, the connection handover is completed.

本实施例中 , 当第一 ΜΜΕ出现故障时， eNB可以获取到第二 MME的地址，并根据该第二 MME的地址进行连接切换，使得第二 MME处理第一 MME 上的用户业务，由于第二 MME上备份有第一 MME上的用户业务数据，所以 UE并不会感觉到 MME出现了故障，无需重新进行附着，因此能够降低业务时延、保证业务连续性。 In this embodiment, when the first ΜΜΕ fails, the eNB may obtain the address of the second MME, and perform connection switching according to the address of the second MME, so that the second MME processes the user service on the first MME, because The user data of the first MME is backed up on the MME. Therefore, the UE does not feel that the MME has a fault and does not need to re-attach. Therefore, the service delay can be reduced and the service continuity can be ensured.

为便于理解，下面从 MME与 eNB交互的角度进行描述，请参阅图 5 , 本发明故障处理方法另一实施例包括： For ease of understanding, the following describes the interaction between the MME and the eNB. Referring to FIG. 5, another embodiment of the fault processing method of the present invention includes:

501、建立 SCTP连接； 501. Establish an SCTP connection.

本实施例中， eNB可以釆用多种方式与 MME建立 SCTP连接，若釆用逻辑 MME的方案，则 eNB可以按照前述图 1或图 2所示的方式与逻辑 MME 建立 SCTP连接。 In this embodiment, the eNB may establish an SCTP connection with the MME in multiple manners. If the scheme of the logical MME is used, the eNB may establish an SCTP connection with the logical MME according to the manner shown in FIG. 1 or FIG. 2 above.

若不釆用逻辑 MME的方案，则 eNB可以分别与第一 MME以及第二 MME 建立 SCTP连接，这种建立 SCTP连接的方式为本领域技术人员的公知常识，具体此处不作限定。 If the scheme of the logical MME is not used, the eNB may establish an SCTP connection with the first MME and the second MME respectively. The manner of establishing the SCTP connection is common knowledge of those skilled in the art, and is not limited herein.

502、第二 MME备份第一 MME上的用户业务数据； 502. The second MME backs up user service data on the first MME.

SCTP连接建立完成之后，若第一 MME还未发生故障，则第一 MME从 eNB得到的用户业务数据均会实时向第二 MME进行同步，使得第二 MME上备份有第一 MME上的用户业务数据。 After the establishment of the SCTP connection, if the first MME has not failed, the user service data obtained by the first MME from the eNB is synchronized to the second MME in real time, so that the user service on the first MME is backed up on the second MME. data.

503、当第一 MME出现故障时，第二 MME更新用户签约数据；第一 MME出现故障时，第二 MME可以将用户设备数据转为第一户设备数据并为其分配资源。 503. When the first MME fails, the second MME updates the user subscription data. When the first MME fails, the second MME may convert the user equipment data into the first user equipment data and allocate resources to the first MME.

本实施例中，第二 MME可以通过如下方式将用户设备数据转为第一户设备数据： In this embodiment, the second MME may convert the user equipment data into the first user equipment data by:

第二 MME可以发送更新位置请求 Update Location Request消息给归属用户服务器（ HSS, Home Subscriber Server ), 将第二 MME的标识注册到 HSS , 并获取用户设备最新的签约数据。 The second MME may send an update location request Update Location Request message to the Home Subscriber Server (HSS), register the identifier of the second MME to the HSS, and obtain the latest subscription data of the user equipment.

第二 MME可以通过如下方式为用户设备分配资源： The second MME may allocate resources to the user equipment by:

第二 MME根据用户设备上下文数据中的服务网关（SGW, Serving Gate way )地址向 SGW发送参数更新请求消息（如 Modify Bearer Request消息），其中包含第二 MME 为该用户设备分配的控制面与用户面地址及隧道端点标识符（TEID, Tunnel Endpoint ID )等信息。 The second MME is based on the serving gateway (SGW, Serving Gate) in the user equipment context data. The method sends a parameter update request message (such as a Modify Bearer Request message) to the SGW, and includes information such as a control plane and a user plane address and a tunnel endpoint identifier (TEID, Tunnel Endpoint ID) allocated by the second MME for the user equipment.

504、 eNB获取第二 MME的地址； 504. The eNB acquires an address of the second MME.

本实施例中， eNB若釆用逻辑 MME的方案与逻辑 MME建立 SCTP连接，则当第一 MME故障时， eNB可以根据 SCTP多归属的特性，从逻辑 MME的标识对应的各个地址中选取处于激活态的地址作为第二 MME的地址，或者， eNB也可以接^：运行管理维护 ( OAM, Operation Administration Maintenance ) 设备 , 或缺省 MME发送的第二 MME的地址。 In this embodiment, if the eNB establishes an SCTP connection with the logical MME by using the scheme of the logical MME, when the first MME is faulty, the eNB may select to activate from each address corresponding to the identifier of the logical MME according to the characteristics of the SCTP multi-homing. The address of the state is used as the address of the second MME, or the eNB may also connect to the OAM (Operation Administration Maintenance) device, or the address of the second MME sent by the default MME.

eNB若分别与第一 MME以及第二 MME建立 SCTP连接，则 eNB也可以根据预置的第一 MME与第二 MME的对应关系选择第一 MME对应的第二 MME, 并获取第二 MME的地址，或者， eNB也可以接收 OAM设备或缺省 MME发送的第二 MME的地址。 If the eNB establishes an SCTP connection with the first MME and the second MME, the eNB may also select the second MME corresponding to the first MME according to the preset correspondence between the first MME and the second MME, and acquire the address of the second MME. Or, the eNB may also receive the address of the second MME sent by the OAM device or the default MME.

在实际应用中， eNB还可以通过更多种方式获取第二 MME的地址，具体此处不作限定。 In an actual application, the eNB can obtain the address of the second MME in a more specific manner, which is not limited herein.

505、 eNB根据第二 MME的地址进行 S1AP连接切换； 505. The eNB performs S1AP connection switching according to the address of the second MME.

当 eNB获取到第二 MME的地址之后，可以基于该地址进行 S1AP连接切换，具体过程可以包括如下几种情况： After the eNB obtains the address of the second MME, the S1AP connection switchover can be performed based on the address. The specific process may include the following situations:

( 1 ) eNB发起 S1AP连接切换： (1) The eNB initiates an S1AP connection switch:

eNB首先获取 UE S1AP Pair参数，之后按照 UE S1AP Pair参数查询对应的 UE数据； The eNB first acquires the UE S1AP Pair parameter, and then queries the corresponding UE data according to the UE S1AP Pair parameter.

当查询到 UE数据之后，根据查询到的 UE数据重新分配 eNB UE S1AP ID 参数； After querying the UE data, reallocating the eNB UE S1AP ID parameter according to the queried UE data;

之后向第二 MME发送 S1AP参数更新请求，该 S1AP参数更新请求中携带 UE SlAP Pair参数以及 eNB重新分配的 eNB UE SlAP ID参数，使得第二 MME重新分配 MME UE S1AP ID参数。 Then, the S1AP parameter update request is sent to the second MME, where the S1AP parameter update request carries the UE SlAP Pair parameter and the eNB UE SlAP ID parameter re-allocated by the eNB, so that the second MME re-allocates the MME UE S1AP ID parameter.

( 2 )第二 MME发起 S1AP连接切换： (2) The second MME initiates an S1AP connection switch:

第二 MME首先获取 UE S1AP Pair参数，之后按照 UE S1AP Pair参数查询对应的 UE数据；当查询到 UE数据之后，根据查询到的 UE数据重新分配 MME UE S1AP ID参数； The second MME first acquires the UE S1AP Pair parameter, and then queries the corresponding UE data according to the UE S1AP Pair parameter; After querying the UE data, reallocating the MME UE S1AP ID parameter according to the queried UE data;

之后向 eNB发送 S1AP参数更新请求，该 S1AP参数更新请求中携带 UE S1AP Pair参数以及 MME重新分配的 MME UE S1AP ID参数，使得 eNB重新分配 eNB UE S1AP ID参数。 Then, the S1AP parameter update request is sent to the eNB, where the S1AP parameter update request carries the UE S1AP Pair parameter and the MME UE S1AP ID parameter re-allocated by the MME, so that the eNB re-allocates the eNB UE S1AP ID parameter.

506、当第一 MME从故障中恢复时，执行故障恢复流程。 506. Perform a fault recovery process when the first MME recovers from the fault.

第二 MME处理第一 MME上的用户业务之后，若第一 MME从故障中恢复，则可以重新进行连接切换，再由第一 MME 重新处理用户业务，则第二 MME重新进入备份状态，或者，也可以由第二 MME继续执行全部的用户业务，由原第一 MME进行备份状态，或者，也可以由第二 MME继续执行部分的用户业务，剩余部分的用户业务由第一 MME执行，具体过程将在后续实施例中举例进行详细描述，此处不再赘述。 After the second MME processes the user service on the first MME, if the first MME recovers from the fault, the connection may be re-switched, and then the first MME re-processes the user service, and then the second MME re-enters the backup state, or The second MME may continue to perform all user services, and the original MME may perform the backup state. Alternatively, the second MME may continue to perform part of the user service, and the remaining part of the user service is performed by the first MME. A detailed description will be given in the following embodiments, and details are not described herein again.

其中，步骤 506是可选步骤。 Wherein step 506 is an optional step.

本实施例中 , 当第一 MME出现故障时， eNB可以获取到第二 MME的地址，并根据该第二 MME的地址进行连接切换，使得第二 MME处理第一 MME 上的用户业务，由于第二 MME上备份有第一 MME上的用户业务数据，所以 UE并不会感觉到 MME出现了故障，无需重新进行附着，因此能够降低业务时延、保证业务连续性。行详细描述： In this embodiment, when the first MME is faulty, the eNB may obtain the address of the second MME, and perform connection switching according to the address of the second MME, so that the second MME processes the user service on the first MME, because The user data of the first MME is backed up on the MME. Therefore, the UE does not feel that the MME has a fault and does not need to re-attach. Therefore, the service delay can be reduced and the service continuity can be ensured. Detailed description of the line:

方案一： Option One:

请参阅图 6, 本发明故障处理方法另一实施例包括： Referring to FIG. 6, another embodiment of the fault processing method of the present invention includes:

601 ~ 602、连接建立请求过程； 601 ~ 602, connection establishment request process;

UE与 eNB建立无线资源控制（ RRC, Radio Resource Control )连接，并在 RRC消息中携带连接建立请求消息（如 Attach Request, TAU Request, Service Request消息等）及目标 MME标识信息给 eNB。 The UE establishes a radio resource control (RRC) connection with the eNB, and carries a connection establishment request message (such as an Attach Request, TAU Request, Service Request message, etc.) and the target MME identity information to the eNB in the RRC message.

eNB接收到连接建立请求消息之后，可以不对该连接建立请求消息进行解析，但会基于 RRC消息中的目标 MME标识信息选择该连接建立请求消息的目的地 IP地址。本实施例中， eNB与 MME建立 SCTP连接的过程以及 S1AP 连接的过程可以如前述图 2所示。 After receiving the connection establishment request message, the eNB may not parse the connection establishment request message, but select the destination IP address of the connection establishment request message based on the target MME identity information in the RRC message. In this embodiment, the process of establishing an SCTP connection between the eNB and the MME, and the S1AP The process of connection can be as shown in Figure 2 above.

eNB从 RRC参数中获知 MME标识为 MME a, 连接建立请求消息的目的地 IP地址为 MME1的 IP1 , 则 eNB向该 IP1发送连接建立请求消息。 The eNB learns from the RRC parameters that the MME identity is MME a, and the destination IP address of the connection setup request message is IP1 of the MME1, and the eNB sends a connection establishment request message to the IP1.

本发明实施例中，第一 MME可以看做是 MME1 , 第二 MME可以看做是 MME2。 In the embodiment of the present invention, the first MME may be regarded as MME1, and the second MME may be regarded as MME2.

603、用户参数更新过程； 603, a user parameter update process;

MME1收到 eNB发送的 UE连接建立请求消息，则可以新建或更新用户设备上下文数据，还可能需要更新相关参数到网关节点（如 Service Request 流程中的相关参数）。 After receiving the UE connection setup request message sent by the eNB, the MME1 may newly create or update the user equipment context data, and may also need to update related parameters to the gateway node (such as related parameters in the Service Request process).

需要说明的是，本实施例中的步骤 603为可选步骤，在实际应用中， MME1 也可以不更新相关参数到网关节点。 It should be noted that step 603 in this embodiment is an optional step. In an actual application, the MME1 may not update related parameters to the gateway node.

604、用户业务数据备份； 604. User service data backup;

MME1与 MME2之间的备份机制可以釆用事件触发或定时器触发等。如果釆用事件触发，如用户设备上下文数据发生改变时，即同步 MME1和 MME2 上的用户设备数据参数。如果釆用定时器触发机制，在两者数据同步定时器超时后发送数据备份请求。 The backup mechanism between MME1 and MME2 can use event triggering or timer triggering. If the event is triggered, if the user equipment context data changes, the user equipment data parameters on MME1 and MME2 are synchronized. If the timer trigger mechanism is used, a data backup request is sent after the data synchronization timer expires.

具体进行用户业务数据备份的过程此处不作限定。 The process of specifically backing up user service data is not limited herein.

605 ~ 606、故障探测过程； 605 ~ 606, fault detection process;

eNB可以通过 SCTP心跳检测机制判断 IP1是否发生故障。 MME2可以通过心跳检测或其他网元故障探测等方式判断 MME1是否发生故障。 The eNB can determine whether the IP1 is faulty through the SCTP heartbeat detection mechanism. The MME 2 can determine whether the MME 1 is faulty by means of heartbeat detection or other network element fault detection.

其中， IP1是 MME1的 IP地址， IP2是 MME2的 IP地址。 IP1 is the IP address of MME1, and IP2 is the IP address of MME2.

需要说明的是，在实际应用中，也可以由其他网元进行故障探测，当检测到故障时，这些检测网元可以通知 MME2。 It should be noted that, in actual applications, fault detection may also be performed by other network elements. When detecting a fault, the detection network elements may notify the MME2.

607 ~ 608、用户签约数据更新； 607 ~ 608, user subscription data update;

当 MME2检测到 MME1发生故障 ,或者是检测网元向 MME2通知 MME1 发生故障时， MME2可以处理 MME1上的用户业务。 When the MME2 detects that the MME1 is faulty, or the detecting network element notifies the MME2 that the MME1 has failed, the MME2 can process the user service on the MME1.

MME2可以将用户设备数据转为户设备数据并为其分配资源。具体来讲， MME2可以发送 Update Location Request消息给 HSS, 将 MME2的标识注册到 HSS, 并获取用户设备最新的签约数据。 MME2据用户设备上下文数据中的 SGW地址发送参数更新请求消息（如 Modify Bearer Request消息 )给上述 SGW, 其中包含 MME2为该用户设备分配的控制面与用户面地址及 TEID等信息。 MME2 can convert user equipment data into household equipment data and allocate resources for it. Specifically, the MME2 may send an Update Location Request message to the HSS, register the identifier of the MME2 to the HSS, and obtain the latest subscription data of the user equipment. The MME 2 sends a parameter update request message (such as a Modify Bearer Request message) to the SGW according to the SGW address in the user equipment context data, and includes information such as a control plane, a user plane address, and a TEID allocated by the MME2 for the user equipment.

609、 IP地址切换； 609, IP address switching;

当 eNB检测到 IP1不可用时，则 eNB可以开始进行 IP地址切换，即对于附着到 MME a的用户设备选择其他处于 "激活态" 地址作为目的地址。如在本实施例中，新的目的地 IP地址为 MME2的 IP2。 When the eNB detects that IP1 is unavailable, the eNB may start IP address switching, that is, select another "active state" address as the destination address for the user equipment attached to MME a. As in this embodiment, the new destination IP address is IP2 of MME2.

610、 eNB与 MME2之间切换 S1AP连接； 610. The S1AP connection is switched between the eNB and the MME2.

本实施例中 , 当 MME1与 MME2分配的 SI AP参数空间（即用户标识 ) 不同时， MME2处理用户业务后无需更改 S1AP相关参数信息。同样，由于 eNB分配的 S1AP参数在设备内部唯一，因此也无需更改 S1AP相关参数信息。 In this embodiment, when the MME1 and the MME2 are different in the SI AP parameter space (that is, the user identifier), the MME2 does not need to change the S1AP related parameter information after processing the user service. Similarly, since the S1AP parameters assigned by the eNB are unique within the device, there is no need to change the S1AP related parameter information.

但是，当 MME1分配的 S1AP参数空间与 MME2分配的 S1AP参数空间相同时，则可能出现 MME1分配的原用户 S1AP参数（即 MME UE S1AP ID ) 已经在 MME2中使用的问题，因此为避免 S1AP参数重复需要对其进行更改。 However, when the S1AP parameter space allocated by the MME1 is the same as the S1AP parameter space allocated by the MME2, the problem that the original user S1AP parameter (ie, the MME UE S1AP ID) allocated by the MME1 has been used in the MME2 may occur, so to avoid the S1AP parameter repetition. It needs to be changed.

具体实现方式可以为： MME2发起 S1AP参数更改消息，其中携带原 UE The specific implementation manner may be: MME2 initiates an S1AP parameter change message, where the original UE is carried.

SIAP ID Pair (包括 MME UE SIAP ID和 eNB UE SIAP )及 MME重新分配的 MME UE SIAP ID。 eNB收到上述消息后基于 UE SIAP ID Pair索引到用户设备数据，并为其分配新的 eNB UE SIAP ID (由于 eNB UE SIAP ID在 eNB设备内部唯一，因此也可以保持原 eNB UE S1AP ID不变）。 The SIAP ID Pair (including the MME UE SIAP ID and the eNB UE SIAP) and the MME UE SIAP ID re-allocated by the MME. After receiving the foregoing message, the eNB indexes the user equipment data based on the UE SIAP ID Pair and allocates a new eNB UE SIAP ID (since the eNB UE SIAP ID is unique within the eNB device, the original eNB UE S1AP ID may also be maintained. ).

611、 MME1故障恢复； 611, MME1 failure recovery;

当 MME1重新开始对故障探测进行应答时，则 MME2获知 MME1 已经从故障中恢复，以及 eNB可以获知 IP1重新可达。 When the MME1 resumes responding to the fault detection, the MME2 learns that the MME1 has recovered from the fault, and the eNB can learn that the IP1 is reachable again.

MME1从故障中恢复之后，可以进行多种故障恢复流程： After MME1 recovers from the fault, various fault recovery processes can be performed:

( 1 ) MME2完全退出： (1) MME2 completely quits:

612 ~ 613、用户业务数据转移过程； 612 ~ 613, user service data transfer process;

MME1从故障中恢复后 , MME2基于 MME1与 MME2之间的故障探测机制发现 MME1恢复。 After the MME1 recovers from the failure, the MME2 finds that the MME1 recovers based on the failure detection mechanism between the MME1 and the MME2.

MME1从故障中恢复后向 MME2发送用户设备数据请求消息。 MME2将附着在 MME a上的用户设备数据发送给 MME1 , 同时释放相应资源。 MME2 继续保存 MME a上附着用户设备的上下文数据，即作为备份设备使用。 After recovering from the failure, the MME1 sends a User Equipment Data Request message to the MME2. The MME2 sends the user equipment data attached to the MME a to the MME1, and releases the corresponding resources. MME2 The context data of the user equipment attached to the MME a is continuously saved, that is, used as a backup device.

614 - 615 , MME1重新处理用户业务； 614 - 615, MME1 re-processes user services;

本实施例中的步骤 614 ~ 615与前述步骤 607 ~ 608类似，具体此处不再赘述。 Steps 614 to 615 in this embodiment are similar to the foregoing steps 607 to 608, and are not described herein.

616、 eNB与 MME1之间进行心跳检测； 616. Perform heartbeat detection between the eNB and the MME1.

eNB基于 SCTP心跳检测机制发现 IP1可达。 The eNB finds that IP1 is reachable based on the SCTP heartbeat detection mechanism.

具体来讲，对于标记为 "未激活" 状态的 MME1的 IP1地址， eNB继续发送心跳检测消息探测链路状态。当 MME1故障恢复且重新获取用户设备数据后，响应上述心跳检测消息， eNB 因此知道该链路故障恢复，并将 MME1 的 IP1重新标记为 "激活态"。 Specifically, for the IP1 address of MME1 marked as "inactive", the eNB continues to send a heartbeat detection message to detect the link state. After the MME1 fails to recover and reacquires the user equipment data, in response to the heartbeat detection message, the eNB thus knows that the link fails to recover, and re-marks the IP1 of MME1 as "active state".

617、 IP地址切换； 617, IP address switching;

MME1的 IP1标记为 "激活" 状态后， eNB内部实现 IP地址切换，即将 MME a相关的 S1AP消息发送给 MME1的 IP1地址。 After the IP1 of the MME1 is marked as "active", the eNB internally implements IP address switching, that is, the S1AP message related to the MME a is sent to the IP1 address of the MME1.

618、 eNB与 MME1之间切换 S1AP连接。 618. The S1AP connection is switched between the eNB and the MME1.

本实施例中步骤 618与前述步骤 610类似，具体此处不再赘述。 Step 618 in this embodiment is similar to the foregoing step 610, and details are not described herein again.

前述步骤 612 ~ 618为故障恢复流程的一种方式，在该方式中， MME2完全退出用户业务的处理，下面介绍另外一种方式： The foregoing steps 612 ~ 618 are one way of the fault recovery process. In this mode, the MME2 completely withdraws the processing of the user service, and another manner is introduced below:

( 2 ) MME2部分退出： (2) Partial exit of MME2:

619、 eNB与 MME1之间进行心跳检测； 619. Perform heartbeat detection between the eNB and the MME1.

620、 MME2发送用户标识占用消息； 620. The MME2 sends a user identity occupation message.

MME2发现 MME1从故障中恢复后 ,将 MME2上附着的且当前用户设备临时标识中含有 MME a标识的用户设备临时标识信息通过用户标识占用消息通知 MME1。 After the MME2 recovers from the fault, the MME1 notifies the MME1 of the temporary identification information of the user equipment that is attached to the MME2 and that contains the MME a identifier in the current user equipment temporary identifier.

对于上述 MME2上正使用的用户设备临时标识， MME1将不会将其分配给新附着用户，且保存上述标识与 MME2作为主设备的另一逻辑 MME标识的对应关系 , 例如 MME2在另一逻辑 MME b中作为主设备，则 MME1保存 MME2上正使用的用户设备临时标识与 MME b的标识。 For the user equipment temporary identity being used on the above MME2, MME1 will not assign it. For the newly attached user, and the corresponding relationship between the identifier and another logical MME identifier of the MME2 as the master device is saved, for example, the MME2 acts as the master device in the other logical MME b, and the MME1 saves the temporary identifier of the user equipment being used on the MME2. The identity of MME b.

621、 IP地址切换； 621, IP address switching;

MME1的 IP1标记为 "激活" 状态后， eNB内部实现 IP地址切换，即将 After IP1 of MME1 is marked as "active", the eNB implements IP address switching internally.

MME a相关的 S1AP消息发送给 MME1的 IP1地址。 The S1AP message related to the MME a is sent to the IP1 address of the MME1.

622、 eNB向 MME1发送初始化 UE消息； 622. The eNB sends an initialization UE message to the MME1.

eNB收到 RRC参数中含有 MME a标识的用户设备连接建立请求消息后，发送 Initial UE Message消息给 MME a的 IP1。 After receiving the user equipment connection establishment request message with the MME a identifier in the RRC parameter, the eNB sends an Initial UE Message to the IP1 of the MME a.

623、 MME1回复重定向指示； 623. The MME1 replies with a redirection indication.

MME1收到 Initial UE Message并获取该用户设备临时标识（ GUTI )。如果上述 GUTI在 MME1中显示为被占用，则 MME1发送重定向指示给 eNB。 The MME1 receives the Initial UE Message and obtains the User Equipment Temporary Identity (GUTI). If the GUTI is shown as being occupied in the MME 1, the MME 1 sends a redirection indication to the eNB.

上述重定向消息中含有该用户设备数据所在的 eNB可知的 MME2标识信息 , 即备份 MME2作为主设备的逻辑 MME b标识。 The redirect message contains the MME2 identification information that is known by the eNB where the user equipment data is located, that is, the backup MME2 is the logical MME b identifier of the master device.

624、 eNB向逻辑 MME b发送初始化 UE消息； 624. The eNB sends an initialization UE message to the logical MME b.

eNB基于重定向指示再次发送 Initial UE Message消息给逻辑 MME b。逻辑 MME b建立与用户设备的连接，提供用户业务服务。 The eNB resends the Initial UE Message to the logical MME b based on the redirection indication. The logical MME b establishes a connection with the user equipment to provide user service services.

625、 GUTI重定位过程； 625, GUTI relocation process;

对于连接态用户，逻辑 MME b为用户设备临时标识中含有 MME a信息的用户设备重新分配用户设备临时标识。使得上述用户设备再次连接网络时， eNB可以基于新的用户设备临时标识直接连接到逻辑 MME b。 For the connected mode user, the logical MME b reassigns the user equipment temporary identifier to the user equipment that contains the MME a information in the temporary identifier of the user equipment. When the user equipment is connected to the network again, the eNB can directly connect to the logical MME b based on the new user equipment temporary identity.

逻辑 MME b为用户设备重新分配用户设备临时标识后，为该用户设备数据选择 MME2对应的 MME。 After the logical MME b reassigns the user equipment temporary identifier to the user equipment, the MME corresponding to the MME2 is selected for the user equipment data.

626、用户标识释放过程。 626. User identity release process.

用户设备临时标识更改后 , MME2发送用户标识释放消息给 MME1。 After the user equipment temporary identity is changed, the MME2 sends a user identity release message to the MME1.

MME1获取上述消息中携带的用户设备标识（GUTI )信息，并在 MME1 中将该标识被占用的标记删除。这样在后续流程中，该标识可以分配给其他新附着的用户设备。 The MME1 obtains the User Equipment Identity (GUTI) information carried in the foregoing message, and deletes the flag that the identifier is occupied in the MME1. Thus in the subsequent process, the identity can be assigned to other newly attached user devices.

上面描述的两种故障恢复流程中，流程（ 1 )在 MME1从故障中恢复后，对于用户设备临时标识中含有 MME a信息的用户设备上下文数据， MME2将其发送给 MME1 , 并由 MME1更新用户面或控制面参数后重新处理该用户业务。而流程（2 )始终由 MME2负责上述用户业务，且为了后续服务中， eNB 可以直接将该用户设备连接到 MME2, 即 MME2作为主设备的逻辑 MME b。 MME2将在用户设备处于连接态时，重新分配用户设备临时标识。 In the two failure recovery processes described above, the process (1) is after the MME1 recovers from the failure, For the user equipment context data including the MME a information in the temporary identifier of the user equipment, the MME2 sends the user equipment context data to the MME1, and the MME1 re-processes the user service after updating the user plane or control plane parameters. The process (2) is always responsible for the above-mentioned user service by the MME2, and for the subsequent service, the eNB can directly connect the user equipment to the MME2, that is, the MME2 acts as the logical MMEb of the master device. The MME2 will reassign the user equipment temporary identity when the user equipment is in the connected state.

在实际应用中还可以使用更多种故障恢复流程，具体此处不作限定。 In the actual application, more fault recovery processes can be used, which are not limited herein.

方案二： Option II:

同样请参阅图 6, 本实施例中， eNB上配置第一 MME和第二 MME的对应关系，即每个第一 MME都有对应的第二 MME标识，（例如 eNB可以将第一 MME标识取反后得到的 MME标识即为该第一 MME的第二 MME标识 , 或为每个第一 MME都配置有相同的第二 MME标识等）。 Referring to FIG. 6 , in this embodiment, the eNB has a corresponding relationship between the first MME and the second MME, that is, each first MME has a corresponding second MME identifier, for example, the eNB may take the first MME identifier. The MME identifier obtained by the reverse is the second MME identifier of the first MME, or the same second MME identifier is configured for each first MME.

当第一 MME故障时 , eNB将 SI AP连接切换到第二 MME,并由第二 MME 处理用户业务，保证用户业务连续性。该方案与方案一的区别在于： When the first MME fails, the eNB switches the SI AP connection to the second MME, and the second MME processes the user service to ensure user service continuity. The difference between this program and program one is:

该方案中， eNB与第一 MME和第二 MME分别建立不同的 SCTP连接，且第一 MME与第二 MME的对应关系静态配置到 eNB上或由其他方式获得，此处不作限定，方案一中， eNB将第一 MME与第二 MME看作同一逻辑 MME , 且在建立 SCTP连接过程中获取第一 MME的地址和第二 MME的地址之间的对应关系。 In this solution, the eNB establishes a different SCTP connection with the first MME and the second MME, and the corresponding relationship between the first MME and the second MME is statically configured on the eNB or obtained by other methods, which is not limited herein. The eNB considers the first MME and the second MME as the same logical MME, and acquires a correspondence between the address of the first MME and the address of the second MME in the process of establishing the SCTP connection.

其中，第一 MME可以叫做 MME1 , 第二 MME可以叫做 MME2。 The first MME may be called MME1, and the second MME may be called MME2.

此外，本方案中， S1AP参数更新流程可以由 MME2发起，也可以由 eNB 发起，当由 MME2发起时，具体流程与前述方案一中描述的过程类似，当由 eNB发起时，具体流程可以为： In addition, in this solution, the S1AP parameter update process may be initiated by the MME2 or may be initiated by the eNB. When initiated by the MME2, the specific process is similar to the process described in the foregoing solution 1. When initiated by the eNB, the specific process may be:

eNB发送 S1AP参数更新消息 ,携带原 UE S1AP ID Pair及 eNB重新分配的备 eNB UE S1AP ID, MME2收到上述消息后基于 UE S1AP ID Pair索引到备份的用户设备数据，并为其分配新的 MME UE S1AP ID。 The eNB sends an S1AP parameter update message, and carries the original UE S1AP ID Pair and the eNB UE S1AP ID re-allocated by the eNB. After receiving the message, the MME2 indexes the user equipment data based on the UE S1AP ID Pair and allocates a new MME to it. UE S1AP ID.

本方案中其他的处理流程与方案一中的处理流程类似，具体此处不再赘述。 The other processing flow in this solution is similar to the processing flow in the first solution, and will not be described here.

方案三： third solution:

请参阅图 7, 本发明故障处理方法另一实施例包括： 701、第一 MME与第二 MME之间进行用户业务数据备份； Referring to FIG. 7, another embodiment of the fault processing method of the present invention includes: 701. Perform backup of user service data between the first MME and the second MME.

第一 MME与第二 MME之间进行用户设备数据备份 , 第二 MME的选择策略与数据备份方式可以与前述方案一所描述的实施例相同，具体此处不作限定。 The user equipment data backup is performed between the first MME and the second MME. The selection policy and the data backup mode of the second MME may be the same as the embodiment described in the foregoing first embodiment, which is not limited herein.

702 ~ 703、 OAM设备对第一 MME以及第二 MME进行状态监控；本实施例中， OAM设备可以对第一 MME以及第二 MME进行状态监控以及故障探测，可以理解的是，除了由 OAM设备进行之外，还可以由缺省 MME, 或者是其他类型的设备进行，具体此处不作限定。 702 ~ 703, the OAM device performs state monitoring on the first MME and the second MME. In this embodiment, the OAM device can perform state monitoring and fault detection on the first MME and the second MME. It can be understood that, except that the OAM device is used. In addition, the default MME, or other types of devices, may be used, which is not limited herein.

需要说明的是，除了由 OAM设备等第三方设备进行状态监控以及故障探测之外，还可以由第一 MME和第二 MME之间互相进行状态监控以及故障探测。 It should be noted that, in addition to state monitoring and fault detection by a third-party device such as an OAM device, status monitoring and fault detection may be performed between the first MME and the second MME.

MMEl故障后，MME2或其他网元如 OAM设备将故障节点与其备份节点标识信息发送给 eNB, 具体可以如下： After the MME1 is faulty, the MME2 or other network element, such as the OAM device, sends the faulty node and its backup node identification information to the eNB. The details are as follows:

704、 OAM设备通知 eNB; 704. The OAM device notifies the eNB.

OAM设备监控所有 MME状态，当发现 MME1故障后发送故障的 MME1 的标识及其对应的 MME2的标识给 eNB, 并指示 eNB将 MME1上的 S1AP 连接切换到 MME2上。 The OAM device monitors all MME states, and after detecting the MME1 failure, sends the identifier of the failed MME1 and its corresponding MME2 identifier to the eNB, and instructs the eNB to switch the S1AP connection on the MME1 to the MME2.

705、 MME2通知 eNB; 705. The MME2 notifies the eNB.

MME2发现 MME1故障后 , 发送主备链路切换指示给 eNB , 该消息中包括故障 MME1的标识与 MME2的标识。 After detecting the MME1 failure, the MME2 sends an active/standby link handover indication to the eNB, where the message includes the identifier of the faulty MME1 and the identifier of the MME2.

706、切换 S1AP连接； 706. Switch the S1AP connection.

eNB收到 OAM设备发送的指示或者是 MME2发送的指示后，将 MME1 的标识对应的目的地 IP地址替换成 MME2的标识对应的目的地 IP地址。当 MME1与 MME2分配的 S1AP参数不同时，链路切换后无需进行相关 S1AP 参数更新。否则发起 S1AP参数更新流程，具体过程与方案二相同，此处不再赘述。 After receiving the indication sent by the OAM device or the indication sent by the MME2, the eNB replaces the destination IP address corresponding to the identifier of the MME1 with the destination IP address corresponding to the identifier of the MME2. When the S1AP parameters allocated by the MME1 and the MME2 are different, the related S1AP parameter update does not need to be performed after the link is switched. Otherwise, the S1AP parameter update process is initiated. The specific process is the same as that of the second solution, and is not described here.

eNB还可以将故障的 MME1中的 MME权重因子（ Relative MME Capacity ) 设置为 0, 用以避免新用户设备附着到故障的 MME1。 707、 MME2进行用户参数更新； The eNB may also set the MME weighting factor ( Relative MME Capacity) in the failed MME1 to 0 to prevent the new user equipment from attaching to the faulty MME1. 707. The MME2 performs user parameter update.

本实施例中， MME2可以处理 MME1上的用户业务，具体方案可以为： MME2到 HSS注册 MME2的标识，并下载最新的用户签约数据。更新 MME2与 SGW之间的用户面与控制面参数等。由于在整个设备切换过程中，用户设备数据没有丟失，因此可以保证用户业务连续性。 In this embodiment, the MME2 can process the user service on the MME1, and the specific solution can be: MME2 to the HSS register the identifier of the MME2, and download the latest user subscription data. Update the user plane and control plane parameters between MME2 and SGW. Since the user equipment data is not lost during the entire device switching process, the user business continuity can be ensured.

708、 GUTI重分配过程； 708, GUTI redistribution process;

MME2 处理用户业务后，可以为上述用户设备重新分配用户临时标识，该临时标识中含有 MME2的标识，使得用户设备下次连接网络时可以基于该用户设备临时标识中 MME2的标识连接到 MME2上。 After processing the user service, the MME2 may re-assign the user temporary identifier to the user equipment, where the temporary identifier includes the identifier of the MME2, so that the user equipment can connect to the MME2 based on the identifier of the MME2 in the temporary identifier of the user equipment when the user equipment connects to the network.

709、 MME1从故障中恢复； 709. The MME1 recovers from the fault.

MME1故障恢复后，通知 eNB将原 S1AP连接重新切回 MME1 , 具体方案如下： After the MME1 recovers from the fault, the eNB is notified to re-switch the original S1AP connection back to the MME1. The specific solution is as follows:

710、 OAM设备通知 eNB; 710. The OAM device notifies the eNB.

OAM设备监控各 MME状态，当发现 MME1从故障中恢复后，发送恢复 MME1连接请求消息给 eNB。 The OAM device monitors the status of each MME, and after recovering from the failure, the MME1 sends a recovery MME1 connection request message to the eNB.

711、 MME2通知 eNB; 711. The MME2 notifies the eNB.

MME2发现 MME1 从故障中恢复后，发送恢复 MME1 连接请求消息给 eNB After MME2 finds that MME1 recovers from the fault, it sends a recovery MME1 connection request message to the eNB.

712、切换 S1AP连接； 712. Switch the S1AP connection.

eNB收到 OAM设备或 MME2发送的消息后，将 MME1的标识对应的目的地 IP地址重新替换成原 MME1的 IP地址。 eNB与恢复的 MME1新建 SCTP 连接，然后将相关的 S1AP连接重新切回 MME1。 After receiving the message sent by the OAM device or the MME2, the eNB replaces the destination IP address corresponding to the identifier of the MME1 with the IP address of the original MME1. The eNB establishes a new SCTP connection with the restored MME1, and then switches the related S1AP connection back to the MME1.

713 ~ 714、 MME1与 MME2进行用户业务数据同步。 713 ~ 714, MME1 and MME2 perform user service data synchronization.

MME1 从故障中恢复后，发送用户设备数据请求消息给 MME2, MME2 将用户设备临时标识中含有 MME1标识的用户设备数据发送给 MME1 , 同时释放相应网络资源。 After recovering from the fault, the MME1 sends a user equipment data request message to the MME2, and the MME2 sends the user equipment data containing the MME1 identifier in the user equipment temporary identifier to the MME1, and releases the corresponding network resource.

MME1 处理用户业务， MME2继续保存上述用户设备数据，作为备份设备。具体流程与前述方案二中描述的流程相同，此处不再赘述。 The MME1 processes the user service, and the MME2 continues to save the user equipment data as a backup device. The specific process is the same as the process described in the foregoing solution 2, and details are not described herein again.

需要说明的是，本实施例中，当 MME1从故障中恢复后，也可以仍然由 MME2 继续负责用户业务，具体流程也与前述方案二中描述的流程相同，此处不再赘述。 It should be noted that, in this embodiment, after the MME1 recovers from the fault, it may still be The MME2 continues to be responsible for the user service. The specific process is the same as that described in the foregoing solution 2. The details are not described here.

本实施中，每个第一 MME都对应唯——个第二 MME, 第一 MME负责其上附着用户设备的用户业务，为用户设备数据分配***资源，第二 MME不负责上述用户设备的用户业务，但对用户设备数据做存储备份。 In this implementation, each first MME corresponds to only one second MME, and the first MME is responsible for the user service to which the user equipment is attached, and allocates system resources for the user equipment data, and the second MME is not responsible for the user of the user equipment. Business, but make a backup of the user device data.

当第一 MME故障后，第二 MME处理第一 MME上的用户业务，同时通知 eNB将与故障第一 MME之间的 S1AP连接切换到第二 MME。当第一 MME 从故障中恢复后 , 再次通知 eNB将原 S 1 AP连接切回第一 MME。 After the first MME fails, the second MME processes the user service on the first MME, and informs the eNB to switch the S1AP connection with the failed first MME to the second MME. After the first MME recovers from the failure, the eNB is again notified to switch the original S 1 AP connection back to the first MME.

本方案与前述方案一二的差别在于： The difference between this scheme and the aforementioned scheme one is that:

本方案需要核心网络侧通知 eNB故障第一 MME对应的第二 MME的标识，并指示 eNB进行 S1AP连接切换，而前述方案一二中， eNB可以直接基于 SCTP的多归属特性或 eNB上静态配置的主备设备对应关系自动完成 S1AP 连接切换。 The solution requires the core network side to notify the eNB of the identity of the second MME corresponding to the first MME, and instructs the eNB to perform the S1AP connection handover. In the foregoing solution 1-2, the eNB can directly perform the multi-homing feature of the SCTP or the static configuration on the eNB. The S1AP connection is automatically switched automatically.

方案四： Option 4:

请参阅图 8, 本发明故障处理方法另一实施例包括： Referring to FIG. 8, another embodiment of the fault processing method of the present invention includes:

801、第一 MME与第二 MME之间进行用户业务数据备份； 801. Perform backup of user service data between the first MME and the second MME.

第一 MME与第二 MME进行用户设备数据备份，备份策略及第二 MME 选择方案与前述方案一中描述的方式类似。 The first MME and the second MME perform user equipment data backup, and the backup policy and the second MME selection scheme are similar to the manner described in the foregoing scheme 1.

802 ~ 803、 OAM设备或缺省 MME负责监控所有 MME的状态；本实施例中 , 以 OAM设备监控所有 MME的状态为例进行说明。 The 802 to 803, the OAM device, or the default MME is responsible for monitoring the status of all the MMEs. In this embodiment, the OAM device monitors the status of all MMEs as an example.

804 - 805、 MME进行信息配置； 804 - 805, the MME performs information configuration;

当第一 MME故障时 , OAM设备从后备资源池中选取一台新 MME ( New MME ), 并发送配置请求消息给 New MME。上述配置信息包括故障的 MME1 的标识（ GUMMEI )、 MME负载权重因子等。 When the first MME fails, the OAM device selects a new MME (New MME) from the backup resource pool, and sends a configuration request message to the New MME. The above configuration information includes the identifier of the MME1 (GUMMEI) of the fault, the MME load weight factor, and the like.

New MME使用故障的 MME1的标识（使用相同的 GUMMEI ), 而对于 MME负载权重因子可以与 MME1相同，也可以不同。配置成功后返回配置信息回复消息给 OAM设备。 The New MME uses the identity of the failed MME1 (using the same GUMMEI), and the MME load weighting factor may be the same as or different from the MME1. After the configuration is successful, a configuration information reply message is returned to the OAM device.

806、向 eNB发送 New MME的地址； New MME配置完成后， ΟΑΜ设备将 New MME的标识及 New MME的 IP地址发送给 eNB。 806. Send an address of the New MME to the eNB. After the New MME is configured, the device sends the identity of the New MME and the IP address of the New MME to the eNB.

807、 eNB进行 IP地址切换； 807. The eNB performs IP address switching.

eNB将 MME1的标识对应的原 MME1 IP地址替换成 New MME IP,并发起到 New MME的新 SCTP连接。 The eNB replaces the original MME1 IP address corresponding to the identifier of the MME1 with the New MME IP, and sends a new SCTP connection to the New MME.

808、 eNB与 New MME之间切换 S1AP连接； 808. The S1AP connection is switched between the eNB and the New MME.

由于 New MME釆用与 MME1相同的 S1AP参数空间，且 New MME当前没有分配任何 S1AP参数，因此从 MME2获取的用户设备数据中，不存在 S1AP参数重复问题，因此无需更改，直接将 S1AP连接切换到 New MME。 Since the New MME uses the same S1AP parameter space as the MME1, and the New MME does not currently allocate any S1AP parameters, there is no S1AP parameter duplication problem in the user equipment data acquired from the MME2, so the S1AP connection is directly switched to no need to be changed. New MME.

New MME获取 MME1上附着的用户设备上下文数据 , 替代 MME1继续为用户设备提供服务。 The new MME obtains the user equipment context data attached to the MME1, and continues to provide services for the user equipment instead of the MME1.

New MME获取用户设备数据的方式可有以下两种方式： There are two ways for the New MME to obtain user device data:

809 ~ 810、 OAM设备发送 New MME标识； 809 ~ 810, the OAM device sends a New MME identity;

本实施例中 , OAM设备将 New MME IP地址等给 MME1的 MME, 例如发送给 MME2。 MME2根据 New MME标识（也是故障 MME1标识信息 )将故障 MME1上的用户设备数据发送给 New MME。 In this embodiment, the OAM device sends the New MME IP address to the MME of the MME1, for example, to the MME2. The MME2 transmits the user equipment data on the faulty MME1 to the New MME according to the New MME identity (also the faulty MME1 identification information).

811 ~ 813、 OAM设备将故障 MME1的 MME2的标识及地址信息发送给 New MME; 811 ~ 813, the OAM device sends the identifier and address information of the MME2 of the failed MME1 to the New MME;

OAM设备将故障 MME1 的第二 MME 的标识及地址信息发送给 New MME , 如包括第二 ΜΜΕ的标识及第二 ΜΜΕ的 IP地址等。 The OAM device sends the identifier and address information of the second MME of the faulty MME1 to the New MME, including the identifier of the second port and the IP address of the second port.

New MME发送用户设备数据请求消息给上述第二 MME, 获取相关用户的用户设备上下文数据。 The new MME sends a user equipment data request message to the second MME to obtain user equipment context data of the related user.

814、进行用户参数更新。 814. Perform user parameter update.

New MME更新核心网络侧用户设第二户面与控制面参数信息，处理用户业务。具体流程与前述方案一所描述的流程类似，此处不再赘述。 The New MME updates the core network side user to set the second user plane and control plane parameter information to process the user service. The specific process is similar to the process described in the foregoing solution, and details are not described herein again.

当第一 MME1从故障中恢复后 , 进入后备资源池，作为第二 MME。本实施中，每个第一 MME对应多个第二 MME。第一 MME负责其上附着用户设备的用户业务，为用户设备数据分配***资源。第二 MME不负责上述用户设备的用户业务，但对用户设备数据做存储备份。当第一 MME故障后 ,新的 MME处理第一 MME用户业务，同时通知 eNB 将原第一 MME上 S1AP连接切换到新的 MME。本方案与方案三都需要核心网络侧显示通知 eNB进行 S1AP连接切换，但本方案中第二 MME可以是多个，且新 MME需要从若干个第二 MME处获取用户设备数据，并处理用户业务。际应用中 ,还可以釆用更多种方式进行 MME的故障处理，具体此处不作限定。 After the first MME1 recovers from the fault, it enters the backup resource pool as the second MME. In this implementation, each first MME corresponds to multiple second MMEs. The first MME is responsible for the user service to which the user equipment is attached, and allocates system resources for the user equipment data. The second MME is not responsible for the user service of the user equipment, but performs storage backup of the user equipment data. After the first MME fails, the new MME processes the first MME user service, and notifies the eNB to switch the S1AP connection on the original first MME to the new MME. Both the scheme and the scheme 3 require the core network side to notify the eNB to perform the S1AP connection handover. However, the second MME may be multiple in the solution, and the new MME needs to acquire user equipment data from several second MMEs, and process the user service. . In the application, the fault processing of the MME can be performed in a variety of manners, which is not limited herein.

本发明实施例中，当第一 MME出现故障时 , eNB可以获取到第二 MME 的地址，并根据该第二 MME的地址进行连接切换，使得第二 MME处理第一 In the embodiment of the present invention, when the first MME is faulty, the eNB may obtain the address of the second MME, and perform connection switching according to the address of the second MME, so that the second MME processes the first

MME上的用户业务，由于第二 MME上备份有第一 MME上的用户业务数据，所以 UE并不会感觉到 MME出现了故障，无需重新进行附着，因此能够降低业务时延、保证业务连续性。 The user service on the MME, because the user service data on the first MME is backed up on the second MME, the UE does not feel that the MME has a fault and does not need to re-attach, thereby reducing service delay and ensuring service continuity. .

下面对本发明演进基站进行描述，请参阅图 9, 本发明演进基站一个实施例包括： The following describes the evolved base station of the present invention. Referring to FIG. 9, an embodiment of the evolved base station of the present invention includes:

获取单元 901 , 用于获取第二 MME 的地址，第二 MME上备份有第一 MME上的用户业务数据； The obtaining unit 901 is configured to obtain an address of the second MME, where the second MME backs up user service data on the first MME.

切换单元 902 , 用于当第一 MME出现故障时，按照第二 MME的地址进行连接切换，使得第二 MME处理第一 MME上的用户业务。 The switching unit 902 is configured to perform connection switching according to the address of the second MME when the first MME fails, so that the second MME processes the user service on the first MME.

本实施例中的演进基站还包括以下单元中的至少一个： The evolved base station in this embodiment further includes at least one of the following units:

第一连接单元 903 , 用于接收第一 MME发送的全球唯一 MME 标识 GUMMEI , 以及与 GUMMEI对应的第一地址和第二地址 , 根据第一地址、第二地址以及 GUMMEI与该第一 MME建立流控制传输协议 SCTP连接 , 该第一地址为第一 MME的地址，该第二地址为第二 MME的地址； a first connection unit 903, configured to receive a globally unique MME identity GUMMEI sent by the first MME, and a first address and a second address corresponding to the GUMMEI, and establish a flow with the first MME according to the first address, the second address, and the GUMMEI Controlling a transport protocol SCTP connection, the first address is an address of the first MME, and the second address is an address of the second MME;

或， Or,

第二连接单元 904, 用于分别与第一 MME以及第二 MME建立 SCTP连接。 The second connecting unit 904 is configured to establish an SCTP connection with the first MME and the second MME, respectively.

本实施例中的切换单元 902可以进一步包括： The switching unit 902 in this embodiment may further include:

获取模块 9021 , 用于获取 UE SlAP Pair参数； The obtaining module 9021 is configured to obtain a UE SlAP Pair parameter.

第一查询模块 9022, 用于按照 UE S1AP Pair参数查询对应的 UE数据；第一分配模块 9023 ,用于根据查询到的 UE数据重新分配 eNB UE S1AP ID 参数； The first query module 9022 is configured to query the corresponding UE data according to the UE S1AP Pair parameter. The first allocation module 9023 is configured to re-allocate the eNB UE S1AP ID according to the queried UE data. parameter;

发送模块 9024, 用于向第二 MME发送 S1AP参数更新请求， S1AP参数更新请求中携带用户设备 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID参数，使得第二 MME重新分配 MME UE S1AP ID参数。 The sending module 9024 is configured to send an S1AP parameter update request to the second MME, where the S1AP parameter update request carries the user equipment UE S1AP Pair parameter and the eNB UE S1AP ID parameter re-allocated by the eNB, so that the second MME re-allocates the MME UE S1AP ID parameter. .

或者，本实施例中的切换单元 902还可以进一步包括： Alternatively, the switching unit 902 in this embodiment may further include:

接收模块 9025 , 用于接收第二 MME发送的 S1AP参数更新请求， S1AP 参数更新请求中携带 UE S1AP Pair参数以及第二 MME重新分配的 MME UE S1AP ID参数； The receiving module 9025 is configured to receive an S1AP parameter update request sent by the second MME, where the S1AP parameter update request carries the UE S1AP Pair parameter and the MME UE S1AP ID parameter re-allocated by the second MME.

第二查询模块 9026, 用于按照 UE S1AP Pair参数查询对应的 UE数据；第二分配模块 9027 ,用于根据查询到的 UE数据重新分配 eNB UE S1AP ID 参数。 The second query module 9026 is configured to query the corresponding UE data according to the UE S1AP Pair parameter. The second allocation module 9027 is configured to re-allocate the eNB UE S1AP ID parameter according to the queried UE data.

为便于理解，下面以一具体应用场景对本实施例演进基站中各单元之间的交互进行描述： For ease of understanding, the interaction between the units in the evolved base station in this embodiment is described in a specific application scenario:

本实施例中，当第一 MME发生故障时，获取单元 901获取第二 MME的地址。 In this embodiment, when the first MME fails, the obtaining unit 901 acquires the address of the second MME.

若 eNB若釆用逻辑 MME的方案与逻辑 MME建立 SCTP连接，则当第一 MME故障时，获取单元 901可以根据 SCTP多归属的特性，从逻辑 MME的标识对应的各个地址中选取处于激活态的地址作为第二 MME的地址，或者，获取单元 901也可以接收 OAM, 或缺省 MME发送的第二 MME的地址。 If the eNB establishes an SCTP connection with the logical MME by using the scheme of the logical MME, the acquiring unit 901 may select the active state from the respective addresses corresponding to the identifier of the logical MME according to the characteristics of the SCTP multi-homing. The address is used as the address of the second MME, or the obtaining unit 901 may also receive the OAM, or the address of the second MME sent by the default MME.

eNB若分别与第一 MME以及第二 MME建立 SCTP连接，则获取单元 901 也可以根据预置的第一 MME与第二 MME的对应关系选择第一 MME对应的第二 MME, 并获取第二 MME的地址，或者，获取单元 901也可以接收 OAM 设备或缺省 MME发送的第二 MME的地址。在实际应用中，获取单元 901还可以通过更多种方式获取第二 MME的地址，具体此处不作限定。 If the eNB establishes an SCTP connection with the first MME and the second MME, the acquiring unit 901 may also select the second MME corresponding to the first MME according to the preset relationship between the first MME and the second MME, and acquire the second MME. Or the obtaining unit 901 may also receive the address of the second MME sent by the OAM device or the default MME. In an actual application, the obtaining unit 901 can obtain the address of the second MME in a more specific manner, which is not limited herein.

当获取单元 901获取到第二 MME的地址之后，切换单元 902可以基于该地址进行 S1AP连接切换，具体过程可以包括如下几种情况： After the obtaining unit 901 obtains the address of the second MME, the switching unit 902 can perform the S1AP connection switching based on the address, and the specific process may include the following situations:

获取模块 9021首先获取 UE S1AP Pair参数，之后第一查询模块 9022按照 UE SI AP Pair参数查询对应的 UE数据； The obtaining module 9021 first acquires the UE S1AP Pair parameter, and then the first query module 9022 queries the corresponding UE data according to the UE SI AP Pair parameter;

当查询到 UE数据之后，第一分配模块 9023根据查询到的 UE数据重新分配 eNB UE S1AP ID参数； After querying the UE data, the first allocating module 9023 re-allocates the eNB UE S1AP ID parameter according to the queried UE data;

之后发送模块 9024向第二 MME发送 S1AP参数更新请求，该 S1AP参数更新请求中携带 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID参数，使得第二 MME重新分配 MME UE S1AP ID参数。 The sending module 9024 then sends an S1AP parameter update request to the second MME, where the S1AP parameter update request carries the UE S1AP Pair parameter and the eNB UE S1AP ID parameter re-allocated by the eNB, so that the second MME re-allocates the MME UE S1AP ID parameter.

接收模块 9025接收第二 MME发送的 S1AP参数更新请求，该 S1AP参数更新请求中携带 UE S1AP Pair参数以及 MME重新分配的 MME UE S1AP ID 参数； The receiving module 9025 receives the S1AP parameter update request sent by the second MME, where the S1AP parameter update request carries the UE S1AP Pair parameter and the MME UE S1AP ID parameter re-allocated by the MME;

第二查询模块 9026按照 UE S1AP Pair参数查询对应的 UE数据，第二分配模块 9027根据查询到的 UE数据重新分配 eNB UE S1AP ID参数。 The second query module 9026 queries the corresponding UE data according to the UE S1AP Pair parameter, and the second allocation module 9027 re-allocates the eNB UE S1AP ID parameter according to the queried UE data.

第二 MME处理第一 MME上的用户业务之后，若第一 MME从故障中恢复，则可以重新进行连接切换，再由第一 MME 重新处理用户业务，则第二 MME重新进入备份状态，或者，也可以由第二 MME继续执行全部的用户业务，由原第一 MME进行备份状态，或者，也可以由第二 MME继续执行部分的用户业务，剩余部分的用户业务由第一 MME执行，此处不作限定。 After the second MME processes the user service on the first MME, if the first MME recovers from the fault, the connection may be re-switched, and then the first MME re-processes the user service, and then the second MME re-enters the backup state, or All the user services may be performed by the second MME, and the original MME may perform the backup state. Alternatively, the second MME may continue to perform part of the user service, and the remaining part of the user service is performed by the first MME. Not limited.

本实施例中 , 获取单元 901可以获取到第二 MME的地址 , 当第一 MME 出现故障时，切换单元 902根据该第二 MME的地址进行连接切换，使得第二 MME处理第一 MME上的用户业务，由于第二 MME上备份有第一 MME上的用户业务数据，所以 UE并不会感觉到 MME出现了故障，无需重新进行附着，因此能够降低业务时延、保证业务连续性。 In this embodiment, the obtaining unit 901 may obtain the address of the second MME. When the first MME fails, the switching unit 902 performs connection switching according to the address of the second MME, so that the second MME processes the user on the first MME. The service is not backed up by the UE on the MME. Therefore, the UE does not feel that the MME has a fault and does not need to re-attach. Therefore, the service delay can be reduced and the service continuity can be ensured.

下面介绍本发明移动性管理实体，请参阅图 10, 本发明移动性管理实体一个实施例包括： The mobility management entity of the present invention is described below. Referring to FIG. 10, the mobility management entity of the present invention is described. One embodiment includes:

同步单元 1001 , 用于备份第一 MME上的用户业务数据； The synchronization unit 1001 is configured to back up user service data on the first MME.

连接切换单元 1002 , 用于当第一 MME出现故障时，与 eNB进行连接切换，以处理第一 MME上的用户业务。 The connection switching unit 1002 is configured to perform a connection switch with the eNB when the first MME fails to process the user service on the first MME.

本实施例中的连接切换单元 1002还可以进一步包括： The connection switching unit 1002 in this embodiment may further include:

获取模块 10021 , 用于获取 UE S1AP Pair参数； The obtaining module 10021 is configured to obtain a UE S1AP Pair parameter.

第一查询模块 10022 , 用于按照 UE S1AP Pair参数查询对应的 UE数据；第一分配模块 10023 ,用于根据查询到的 UE数据重新分配 MME UE S1AP ID参数； The first query module 10022 is configured to query the corresponding UE data according to the UE S1AP Pair parameter. The first allocation module 10023 is configured to re-allocate the MME UE S1AP ID parameter according to the queried UE data.

发送模块 10024, 用于向 eNB发送 S1AP参数更新请求， S1AP参数更新请求中携带用户设备 UE SlAP Pair参数以及 MME重新分配的 MME UE S1AP ID参数，使得 eNB重新分配 eNB UE S1AP ID参数。 The sending module 10024 is configured to send an S1AP parameter update request to the eNB, where the S1AP parameter update request carries the user equipment UE SlAP Pair parameter and the MME re-allocated MME UE S1AP ID parameter, so that the eNB reallocates the eNB UE S1AP ID parameter.

或者，本实施例中的连接切换单元 1002还可以进一步包括： Alternatively, the connection switching unit 1002 in this embodiment may further include:

接收模块 10025, 用于接收 eNB发送的 S1AP参数更新请求， S1AP参数更新请求中携带 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID参数； The receiving module 10025 is configured to receive an S1AP parameter update request sent by the eNB, where the S1AP parameter update request carries the UE S1AP Pair parameter and the eNB UE S1AP ID parameter re-allocated by the eNB;

第二查询模块 10026, 用于按照 UE SlAP Pair参数查询对应的 UE数据；第二分配模块 10027,用于根据查询到的 UE数据重新分配 MME UE S1AP ID参数。 The second query module 10026 is configured to query the corresponding UE data according to the UE SlAP Pair parameter. The second allocation module 10027 is configured to re-allocate the MME UE S1AP ID parameter according to the queried UE data.

本实施例中的移动性管理实体还可以进一步包括： The mobility management entity in this embodiment may further include:

请求接收单元 1003 , 用于当第一 MME从故障中恢复时，接收第一 MME 发送的 UE数据请求消息； The request receiving unit 1003 is configured to receive a UE data request message sent by the first MME when the first MME recovers from the fault;

释放控制单元 1004, 用于将对应的 UE数据发送至第一 MME, 并释放相应资源。 The release control unit 1004 is configured to send corresponding UE data to the first MME, and release the corresponding resource.

或者，本实施例中的移动性管理实体还可以进一步包括： Alternatively, the mobility management entity in this embodiment may further include:

发送单元 1005, 用于当第一 MME从故障中恢复时，将当前用户设备临时标识未改变的用户设备临时标识发送至第一 MME, 使得第一 MME将用户设备临时标识标记为已被占用； The sending unit 1005 is configured to: when the first MME recovers from the fault, send the temporary identifier of the user equipment that is not changed by the current user equipment to the first MME, so that the first MME marks the user equipment temporary identifier as being occupied;

处理单元 1006, 用于继续为用户设备临时标识对应的用户提供服务。本实施例中 , 当第一 MME出现故障时， eNB可以获取到第二 MME的地址，并根据该第二 MME的地址进行连接切换，使得第二 MME处理第一 MME 上的用户业务，由于第二 MME上备份有第一 MME上的用户业务数据，所以 UE并不会感觉到 MME出现了故障，无需重新进行附着，因此能够降低业务时延、保证业务连续性。 The processing unit 1006 is configured to continue to provide a service for the user that is temporarily identified by the user equipment. In this embodiment, when the first MME is faulty, the eNB may obtain the address of the second MME, and perform connection switching according to the address of the second MME, so that the second MME processes the user service on the first MME, because The user data of the first MME is backed up on the MME. Therefore, the UE does not feel that the MME has a fault and does not need to re-attach. Therefore, the service delay can be reduced and the service continuity can be ensured.

请参阅图 11 , 本发明移动性管理实体另一实施例包括： Referring to FIG. 11, another embodiment of the mobility management entity of the present invention includes:

第一交互单元 1101 , 用于与第二 MME交互配置信息； The first interaction unit 1101 is configured to exchange configuration information with the second MME.

第一接收单元 1102, 用于接收 eNB发送的 SCTP连接建立请求；第一响应单元 1103 ,用于向 eNB发送 SCTP连接建立响应， SCTP连接建立响应中包含第一 MME的地址以及第二 MME的地址。 The first receiving unit 1102 is configured to receive an SCTP connection establishment request sent by the eNB, where the first response unit 1103 is configured to send an SCTP connection setup response to the eNB, where the SCTP connection setup response includes an address of the first MME and an address of the second MME. .

第二交互单元 1104,用于将 SCTP连接所需参数、偶联端点所需参数以及对端每个传送地址所需参数发送至第二 MME。 The second interaction unit 1104 is configured to send a required parameter of the SCTP connection, a parameter required for coupling the endpoint, and a parameter required for each transmission address of the peer to the second MME.

第二接收单元 1105, 用于接收 eNB发送的 S1连接建立请求， S1连接建立请求中包含 eNB设备级参数； The second receiving unit 1105 is configured to receive an S1 connection establishment request sent by the eNB, where the S1 connection establishment request includes an eNB device level parameter.

第二响应单元 1106, 用于向 eNB发送 S1连接建立响应， S1连接建立响应中包含 GUMMEI以及 MME负载权重因子； The second response unit 1106 is configured to send an S1 connection setup response to the eNB, where the S1 connection setup response includes a GUMMEI and an MME load weighting factor;

第三交互单元 1107, 用于将 eNB设备级参数发送至第二 MME。 The third interaction unit 1107 is configured to send the eNB device level parameter to the second MME.

为便于理解，下面以一具体应用场景对本实施例移动性管理实体中各单元之间的交互进行描述： For ease of understanding, the interaction between the units in the mobility management entity of this embodiment is described in a specific application scenario:

第一 MME1中的第一交互单元 1101获取其第二 MME2的标识，本实施例中，第一 MME1 中的第一交互单元 1101 可以从其他网元处获取其第二 MME2的标识 , 第一 MME1也可以根据一定策略自主选择第二 MME2。 The first interaction unit 1101 in the first MME1 obtains the identifier of the second MME2. In this embodiment, the first interaction unit 1101 in the first MME1 may obtain the identifier of the second MME2 from the other network element, and the first MME1 The second MME 2 can also be selected autonomously according to a certain strategy.

第一交互单元 1101 将其 SCTP 端点传送地址（本实施例中可以为第一 The first interaction unit 1101 transmits its address to the SCTP endpoint (which may be the first in this embodiment)

MME1的 IP地址 IP1与端口号）发送给第二 MME2。此外，第一交互单元 1101 还可以将负载能力通知第二 MME2,第二 MME2可以基于第一 MME1的负载能力为第一 MME1预留相应备份资源。第二 MME2保存第一 MME1的端点传送地址，并将自身的 IP地址 IP2发送给第一 MME1。主第二 MME交互配置信息后，生成逻辑 MME实体 MME a。可以理解， MME a上附着用户设备的第一户设备数据在第一 MME1上处理，而第二户设备数据在第二 MME2上存储。 The IP address IP1 and port number of the MME 1 are transmitted to the second MME 2. In addition, the first interaction unit 1101 may also notify the second MME2 of the load capability, and the second MME2 may reserve a corresponding backup resource for the first MME1 based on the load capability of the first MME1. The second MME 2 saves the endpoint transport address of the first MME 1, and transmits its own IP address IP2 to the first MME 1. After the primary second MME exchanges configuration information, a logical MME entity MME a is generated. It can be understood that the first user equipment data of the user equipment attached to the MME a is processed on the first MME1, and the second household equipment data is stored on the second MME2.

当 eNB需要与 MME a建立 SCTP连接以进行用户业务时， eNB可以向第一 MME1中的第一接收单元 1102发送 SCTP连接建立请求，该 SCTP连接建立请求中可以包含本端点传送地址、本端启动标签 Tag-eNB、最大出局流数量及允许的最大入局流数量等信息。 When the eNB needs to establish an SCTP connection with the MME a to perform the user service, the eNB may send an SCTP connection establishment request to the first receiving unit 1102 in the first MME1, where the SCTP connection establishment request may include the address of the local endpoint, and the local end starts. The tag Tag-eNB, the maximum number of outgoing flows, and the maximum number of incoming flows allowed.

本实施例中， eNB中可以静态配置有第一 MME1的地址，也可以由其他的网元将第一 MME1的地址发送给 eNB , 具体此处不作限定。 In this embodiment, the address of the first MME1 may be statically configured in the eNB, and the address of the first MME1 may be sent to the eNB by other network elements, which is not limited herein.

第一接收单元 1102收到 eNB发送的 SCTP连接建立请求后，第一响应单元 1103向 eNB发送 SCTP连接建立响应。 After the first receiving unit 1102 receives the SCTP connection establishment request sent by the eNB, the first response unit 1103 sends an SCTP connection establishment response to the eNB.

需要说明的是，本实施例中，第一响应单元 1103发送的 MME a的端点传送地址不仅包含第一 MME1的 IP地址 IP1 , 同时也包含第二 MME2的 IP地址 IP2。 It should be noted that, in this embodiment, the endpoint transmission address of the MME a sent by the first response unit 1103 includes not only the IP address IP1 of the first MME1 but also the IP address IP2 of the second MME2.

eNB收到第一 MME1发送的状态 Cookie后，在 Cookie Echo消息中将此参数原封带回给第一 MME 1。 After receiving the status cookie sent by the first MME1, the eNB brings the parameter back to the first MME 1 in the cookie Echo message.

第一 MME1进行 Cookie验证 ,验证通过后建立与 eNB之间的 SCTP偶联 , 并发送 Cookie ACK消息给 eNB , 通知 eNB SCTP连接建立成功。 The first MME1 performs cookie verification, establishes SCTP coupling with the eNB after the verification is passed, and sends a cookie ACK message to the eNB, notifying the eNB that the SCTP connection is successfully established.

第一 MME1与 eNB建立 SCTP连接后，第一 MME1 中的第二交互单元 1104将 SCTP连接所需参数、偶联端点所需参数及对端每个传送地址所需参数发送给第二 MME2。 After the first MME1 establishes an SCTP connection with the eNB, the second interaction unit 1104 in the first MME1 sends the parameters required for the SCTP connection, the parameters required for the coupling endpoint, and the parameters required for each of the opposite transmission addresses to the second MME2.

其中 SCTP连接所需参数包括密钥、本端点连接地址列表等。偶联端点所需参数包括本端与对端验证标签、对端传送地址列表、偶联的 PMTU, 例如对端端点所有传送地址中发现的最小 PMTU等。对端传送地址所需参数包括该目的地址定时器、目的地当前状态等。 The parameters required for the SCTP connection include a key, a list of the endpoint connection addresses, and the like. The parameters required for the coupled endpoint include the local and peer authentication labels, the peer transport address list, and the coupled PMTU, such as the minimum PMTU found in all transport addresses of the peer endpoint. The parameters required for the peer to transmit the address include the destination address timer, the current state of the destination, and the like.

本实施例中， SCTP连接建立后，当某条通路空闲时， eNB可以产生相应的心跳检测消息发送给第一 MME1以及第二 MME2,第一 MME1接收到该心跳检测消息后 , 则会对该心跳检测消息进行应答，而第二 MME2接收到该心跳检测消息时，可以有两种处理方式，具体处理方式与前述图 2所示实施例中描述的内容类似，此处不再赘述。 In this embodiment, after the SCTP connection is established, when a certain path is idle, the eNB may generate corresponding The heartbeat detection message is sent to the first MME1 and the second MME2. After receiving the heartbeat detection message, the first MME1 responds to the heartbeat detection message, and when the second MME2 receives the heartbeat detection message, there may be two The processing manners are similar to those described in the foregoing embodiment shown in FIG. 2, and details are not described herein again.

eNB发送 S1连接建立请求消息 SI Setup Request给第一 MME1的第二接收单元 1105 ,该 SI Setup Request消息中包含 eNB设备级参数，如 Global eNB ID、 eNB Name及该 eNB支持的 TAs区等。 The eNB sends an S1 connection setup request message SI Setup Request to the second receiving unit 1105 of the first MME1, where the SI Setup Request message includes eNB device level parameters, such as a Global eNB ID, an eNB Name, and a TAs area supported by the eNB.

第一 MME1中的第二响应单元 1106发送 SI Setup Response消息给 eNB, 该 SI Setup Response消息包含 MME a标识（ MME a GUMMEI )、 MME负载权重因子（ Relative MME Capacity )等。 The second response unit 1106 in the first MME1 sends a SI Setup Response message to the eNB, where the SI Setup Response message includes an MME a identifier (MME a GUMMEI ), an MME load weight factor ( Relative MME Capacity ), and the like.

第一 MME1中的第三交互单元 1107将 eNB设备级参数发送给第二 MME2 存储，例如可以转发 SI Setup Request消息给第二 MME2, 使得第二 MME2 获得相应 eNB设备级参数。 The third eNB1 in the first MME1 sends the eNB device level parameter to the second MME2 for storage. For example, the SI Setup Request message may be forwarded to the second MME2, so that the second MME2 obtains the corresponding eNB device level parameter.

本实施例中，由物理上独立的两个 MME设备各自分配部分资源组成单一逻辑 MME实体。此逻辑 MME与接入网络侧建立一条 SCTP连接。 In this embodiment, each of the physically independent two MME devices allocates a part of resources to form a single logical MME entity. The logical MME establishes an SCTP connection with the access network side.

本实施例还提供一种通信***，请参阅图 12, 本发明通信***一个实施例包括： The embodiment further provides a communication system. Referring to FIG. 12, an embodiment of the communication system of the present invention includes:

eNB1201 , 第一 MME1202, 以及第二 MME1203; The eNB 1201, the first MME 1202, and the second MME 1203;

eNB1201用于获取该第二 MME1203的地址，当该第一 MME1202出现故障时，该 eNB1201按照该第二 MME1203的地址进行连接切换；该第二 MME1203用于备份该第一 MME1202上的用户业务数据，当该第 — MME1202出现故障时，与 eNB1201进行连接切换，以处理该第一 MME1202 上的用户业务。 The eNB 1201 is configured to acquire an address of the second MME 1203. When the first MME 1202 fails, the eNB 1201 performs connection switching according to the address of the second MME 1203. The second MME 1203 is configured to back up the user service data on the first MME 1202. When the first MME 1202 fails, the MME 1201 performs a connection handover with the eNB 1201 to process the user service on the first MME 1202.

本实施例中的第一 MME1202还用于与第二 MME1203交互配置信息；接收 eNB1201发送的 SCTP连接建立请求；向该 eNB1201发送 SCTP连接建立响应，该 SCTP连接建立响应中包含第一 MME1202的地址以及第二 MME1203 的地址。 The first MME 1202 in this embodiment is further configured to exchange configuration information with the second MME 1203; receive an SCTP connection establishment request sent by the eNB 1201; and send an SCTP connection establishment response to the eNB 1201, where the SCTP connection establishment response includes an address of the first MME 1202 and The address of the second MME 1203.

第一 MME1202还用于将 SCTP连接所需参数、偶联端点所需参数以及对端每个传送地址所需参数发送至第二 MME1203。 The first MME 1202 is further configured to send the required parameters of the SCTP connection, parameters required for coupling the endpoint, and parameters required for each transport address of the peer to the second MME 1203.

或者，本实施例中的第一 MME1202还可以进一步包括： Alternatively, the first MME 1202 in this embodiment may further include:

第一 MME1202还用于接收 eNB1201发送的 S1连接建立请求，该 S1连接建立请求中包含 eNB设备级参数；向 eNB1201发送 S1连接建立响应，该 The first MME 1202 is further configured to receive an S1 connection setup request sent by the eNB 1201, where the S1 connection setup request includes an eNB device level parameter, and send an S1 connection setup response to the eNB 1201, where

S1连接建立响应中包含 GUMMEI以及 MME负载权重因子；将 eNB1201设备级参数发送至第二 MME1203。 The S1 connection setup response includes a GUMMEI and an MME load weighting factor; and the eNB 1201 equipment level parameter is sent to the second MME 1203.

需要说明的是，本实施例中的第一 MME1202、第二 MME1203 以及 eNB1201的处理流程与前述实施例中描述的流程类似，具体此处不再赘述。 It should be noted that the processing flow of the first MME 1202, the second MME 1203, and the eNB 1201 in this embodiment is similar to the process described in the foregoing embodiment, and details are not described herein again.

本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件完成 ,该程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。 A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, and the above mentioned storage medium can be It is a read-only memory, a disk or a disc.

以上对本发明所提供的一种连接建立方法、故障处理方法、通信***以及相关设备进行了详细介绍，对于本领域的一般技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，因此，本说明书内容不应理解为对本发明的限制。 The foregoing describes a connection establishment method, a fault processing method, a communication system, and related equipment provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, in the specific implementation manner and application scope, There are variations, and therefore, the description should not be construed as limiting the invention.

Claims

权利要求 Rights request

1、一种故障处理方法，其特征在于，包括： A fault processing method, comprising:

演进基站 eNB获取第二移动性管理实体 MME的地址，所述第二 MME 上备份有第一 MME上的用户业务数据； The eNB obtains the address of the second mobility management entity MME, and the second MME backs up the user service data on the first MME;

当所述第一 MME出现故障时 ,所述 eNB按照所述第二 MME的地址进行连接切换，使得所述第二 MME处理所述第一 MME上的用户业务。 When the first MME fails, the eNB performs connection switching according to the address of the second MME, so that the second MME processes the user service on the first MME.

2、根据权利要求 1所述的方法，其特征在于，所述演进基站 eNB获取第二 MME的地址之前包括： The method according to claim 1, wherein before the evolved base station eNB acquires the address of the second MME, the method includes:

eNB接收第一 MME发送的全球唯一 MME标识 GUMMEI, 以及与所述 GUMMEI对应的第一地址和第二地址，所述第一地址为所述第一 MME的地址，所述第二地址为所述第二 MME的地址； The eNB receives the globally unique MME identity GUMMEI sent by the first MME, and the first address and the second address corresponding to the GUMME1, where the first address is an address of the first MME, and the second address is the The address of the second MME;

eNB根据所述第一地址、第二地址以及 GUMMEI与所述第一 MME建立流控制传输协议 SCTP连接。 The eNB establishes a flow control transmission protocol SCTP connection with the first MME according to the first address, the second address, and the GUMMEI.

3、根据权利要求 2所述的方法，其特征在于，所述演进基站 eNB获取第二 MME的地址包括： The method according to claim 2, wherein the obtaining, by the evolved base station eNB, the address of the second MME includes:

eNB从所述 GUMMEI对应的各个地址中选取处于激活态的地址。 The eNB selects an address in an active state from each address corresponding to the GUMMEI.

4、根据权利要求 1所述的方法，其特征在于，所述演进基站 eNB获取第二 MME的地址之前包括： The method according to claim 1, wherein before the evolved base station eNB acquires the address of the second MME, the method includes:

eNB分别与第一 MME以及第二 MME建立 SCTP连接。 The eNB establishes an SCTP connection with the first MME and the second MME, respectively.

5、根据权利要求 4所述的方法，其特征在于，所述演进基站 eNB获取第二 MME的地址包括： The method according to claim 4, wherein the obtaining, by the evolved base station eNB, the address of the second MME includes:

eNB根据预置的第一 MME与第二 MME的对应关系选择所述第一 MME 对应的第二 MME , 并获取所述第二 MME的地址； The eNB selects a second MME corresponding to the first MME according to a preset correspondence between the first MME and the second MME, and acquires an address of the second MME.

或， Or,

eNB接收 OAM设备或缺省 MME发送的第二 MME的地址。 The eNB receives the address of the second MME sent by the OAM device or the default MME.

6、根据权利要求 1至 5中任一项所述的方法，其特征在于，所述 eNB按照所述第二 MME的地址进行连接切换包括： The method according to any one of claims 1 to 5, wherein the eNB performs connection switching according to the address of the second MME, including:

eNB向所述第二 MME发送 S1AP参数更新请求，所述 S1AP参数更新请求中携带用户设备 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID 参数，使得所述第二 MME重新分配 MME UE S1AP ID参数。 The eNB sends an S1AP parameter update request to the second MME, where the S1AP parameter update request carries the user equipment UE S1AP Pair parameter and the eNB UE S1AP ID re-allocated by the eNB. a parameter, such that the second MME re-allocates the MME UE S1AP ID parameter.

7、根据权利要求 1至 5中任一项所述的方法，其特征在于，所述 eNB按照所述第二 MME的地址进行连接切换包括： The method according to any one of claims 1 to 5, wherein the eNB performs connection switching according to the address of the second MME, including:

eNB接收所述第二 MME发送的 S1AP参数更新请求，所述 S1AP参数更新请求中携带 UE SlAP Pair参数以及第二 MME重新分配的 MME UE SIAP ID 参数； The eNB receives the S1AP parameter update request sent by the second MME, where the S1AP parameter update request carries the UE SlAP Pair parameter and the MME UE SIAP ID parameter re-allocated by the second MME;

eNB按照所述 UE S1AP Pair参数查询对应的 UE数据； The eNB queries the corresponding UE data according to the UE S1AP Pair parameter.

eNB才艮据查询到的 UE数据重新分配 eNB UE SIAP ID参数。 The eNB then reallocates the eNB UE SIAP ID parameters based on the queried UE data.

8、一种故障处理方法，其特征在于，包括： 8. A fault processing method, comprising:

第二移动性管理实体 MME备份第一 MME上的用户业务数据； The second mobility management entity MME backs up user service data on the first MME;

当第一 MME出现故障时，第二 MME与 eNB进行连接切换，处理所述第一 MME上的用户业务。 When the first MME fails, the second MME performs a connection handover with the eNB to process user services on the first MME.

9、根据权利要求 8所述的方法，其特征在于，所述第二 MME与 eNB进行连接切换包括： The method according to claim 8, wherein the switching between the second MME and the eNB includes:

第二 MME向所述 eNB发送 S1AP参数更新请求，所述 S1AP参数更新请求中携带用户设备 UE SlAP Pair参数以及 MME重新分配的 MME UE SIAP ID 参数，使得所述 eNB重新分配 eNB UE S1AP ID参数。 The second MME sends an S1AP parameter update request to the eNB, where the S1AP parameter update request carries the user equipment UE SlAP Pair parameter and the MME re-allocated MME UE SIAP ID parameter, so that the eNB re-allocates the eNB UE S1AP ID parameter.

10、根据权利要求 8所述的方法，其特征在于，所述第二 MME与 eNB 进行连接切换包括： The method according to claim 8, wherein the performing, by the second MME, the connection handover with the eNB includes:

第二 MME接收所述 eNB发送的 SI AP参数更新请求，所述 SI AP参数更新请求中携带 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID参数；第二 MME按照所述 UE S1AP Pair参数查询对应的 UE数据； The second MME receives the SI AP parameter update request sent by the eNB, where the SI AP parameter update request carries the UE S1AP Pair parameter and the eNB UE S1AP ID parameter re-allocated by the eNB; the second MME queries according to the UE S1AP Pair parameter Corresponding UE data;

第二 MME根据查询到的 UE数据重新分配 MME UE S1AP ID参数。 The second MME re-allocates the MME UE S1AP ID parameter according to the queried UE data.

11、根据权利要求 8或 9所述的方法，其特征在于，当第一 MME出现故障之前，所述方法还包括： The method according to claim 8 or 9, wherein, before the first MME fails, the method further includes:

所述第二 MME接收 eNB发送的心跳检测消息； The second MME receives a heartbeat detection message sent by the eNB;

当第一 MME出现故障时，第二 MME对 eNB发送的心跳检测消息进行应答。 When the first MME fails, the second MME answers the heartbeat detection message sent by the eNB.

12、根据权利要求 8至 10中任一项所述的方法，其特征在于，所述第二 MME与 eNB进行连接切换之后包括： The method according to any one of claims 8 to 10, characterized in that After the MME performs connection switching with the eNB, the method includes:

当第一 MME从故障中恢复时 , 第二 MME接收第一 MME发送的 UE数据请求消息； When the first MME recovers from the fault, the second MME receives the UE data request message sent by the first MME;

第二 MME将对应的 UE数据发送至第一 MME, 并释放相应资源；第一 MME与 eNB进行连接切换，以处理所述第二 MME上的用户业务。 The second MME sends the corresponding UE data to the first MME, and releases the corresponding resource. The first MME performs a connection switch with the eNB to process the user service on the second MME.

13、根据权利要求 8至 10中任一项所述的方法，其特征在于，所述第二 MME与 eNB进行连接切换之后包括： The method according to any one of claims 8 to 10, wherein after the second MME performs connection switching with the eNB, the method includes:

当第一 MME从故障中恢复时 , 第二 MME将当前用户设备临时标识未改变的用户设备临时标识发送至第一 MME, 使得第一 MME将所述用户设备临时标识标己为已被占用； When the first MME recovers from the fault, the second MME sends the temporary identifier of the user equipment that is not changed by the current user equipment to the first MME, so that the first MME identifies the user equipment as a temporary identifier.

第二 ΜΜΕ继续为所述用户设备临时标识对应的用户提供服务。 The second device continues to provide services for the user corresponding to the temporary identification of the user equipment.

14、一种基站，其特征在于，包括： A base station, comprising:

获取单元，用于获取第二 ΜΜΕ 的地址，所述第二 ΜΜΕ上备份有第一 ΜΜΕ上的用户业务数据； An obtaining unit, configured to obtain an address of the second port, where the user data of the first port is backed up;

切换单元，用于当所述第一移动性管理实体 ΜΜΕ出现故障时，按照所述第二 ΜΜΕ的地址进行连接切换，使得所述第二 ΜΜΕ处理所述第一 ΜΜΕ上的用户业务。 And a switching unit, configured to perform, when the first mobility management entity fails, perform connection switching according to the address of the second port, so that the second port processes the user service on the first port.

15、根据权利要求 14所述的演进基站，其特征在于，所述演进基站还包括以下单元中的至少一个： The evolved base station according to claim 14, wherein the evolved base station further comprises at least one of the following units:

第一连接单元 ,用于接收第一 ΜΜΕ发送的全球唯一 ΜΜΕ标识 GUMMEI , 以及与所述 GUMMEI对应的第一地址和第二地址，根据所述第一地址、第二地址以及 GUMMEI与所述第一 MME建立流控制传输协议 SCTP连接，所述第一地址为所述第一 MME的地址，所述第二地址为所述第二 MME的地址；或， a first connection unit, configured to receive a first unique identifier GUGUMMEI sent by the first ,, and a first address and a second address corresponding to the GUMMEI, according to the first address, the second address, and the GUMMEI and the first An MME establishes a flow control transmission protocol (SCTP) connection, the first address is an address of the first MME, and the second address is an address of the second MME; or

第二连接单元，用于分别与第一 MME以及第二 MME建立 SCTP连接。 And a second connecting unit, configured to establish an SCTP connection with the first MME and the second MME, respectively.

16、根据权利要求 14或 15所述的演进基站，其特征在于，所述切换单元包括： The evolved base station according to claim 14 or 15, wherein the switching unit comprises:

获取模块，用于获取 UE SlAP Pair参数； An obtaining module, configured to acquire a UE SlAP Pair parameter;

第一查询模块，用于按照所述 UE SlAP Pair参数查询对应的 UE数据；第一分配模块，用于根据查询到的 UE数据重新分配 eNB UE S1AP ID参数； a first query module, configured to query, according to the UE SlAP Pair parameter, corresponding UE data; a first allocation module, configured to re-allocate an eNB UE S1AP ID parameter according to the queried UE data;

发送模块，用于向所述第二 MME发送 S1AP参数更新请求，所述 S1AP 参数更新请求中携带用户设备 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID参数，使得所述第二 MME重新分配 MME UE S1AP ID参数。 a sending module, configured to send an S1AP parameter update request to the second MME, where the S1AP parameter update request carries a user equipment UE S1AP Pair parameter and an eNB UE S1AP ID parameter re-allocated by the eNB, so that the second MME is re-allocated MME UE S1AP ID parameter.

17、根据权利要求 14或 15所述的演进基站，其特征在于，所述切换单元包括： The evolved base station according to claim 14 or 15, wherein the switching unit comprises:

接收模块，用于接收所述第二 MME发送的 S1AP参数更新请求，所述 SI AP参数更新请求中携带 UE SI AP Pair参数以及第二 MME重新分配的 MME UE S1AP ID参数； a receiving module, configured to receive an S1AP parameter update request sent by the second MME, where the SI AP parameter update request carries a UE SI AP Pair parameter and a second MME re-allocated MME UE S1AP ID parameter;

第二查询模块，用于按照所述 UE SlAP Pair参数查询对应的 UE数据；第二分配模块，用于根据查询到的 UE数据重新分配 eNB UE S1AP ID参数。 The second query module is configured to query the corresponding UE data according to the UE SlAP Pair parameter, and the second allocation module is configured to re-allocate the eNB UE S1AP ID parameter according to the queried UE data.

18、一种移动性管理实体，其特征在于，包括： 18. A mobility management entity, comprising:

同步单元，用于备份第一 MME上的用户业务数据； a synchronization unit, configured to back up user service data on the first MME;

连接切换单元，用于当第一 MME出现故障时，与 eNB进行连接切换，以处理所述第一 MME上的用户业务。 And a connection switching unit, configured to perform a connection handover with the eNB when the first MME fails, to process user services on the first MME.

19、根据权利要求 18所述的移动性管理实体，其特征在于，所述连接切换单元包括： The mobility management entity according to claim 18, wherein the connection switching unit comprises:

第一查询模块，用于按照所述 UE SlAP Pair参数查询对应的 UE数据；第一分配模块，用于根据查询到的 UE数据重新分配 MME UE S1AP ID 参数； The first query module is configured to query the corresponding UE data according to the UE SlAP Pair parameter; the first allocation module is configured to re-allocate the MME UE S1AP ID parameter according to the queried UE data;

发送模块，用于向所述 eNB发送 S1AP参数更新请求，所述 S1AP参数更新请求中携带用户设备 UE S1AP Pair参数以及 MME重新分配的 MME UE S1AP ID参数，使得所述 eNB重新分配 eNB UE S1AP ID参数。 a sending module, configured to send an S1AP parameter update request to the eNB, where the S1AP parameter update request carries a user equipment UE S1AP Pair parameter and an MME re-allocated MME UE S1AP ID parameter, so that the eNB re-allocates the eNB UE S1AP ID parameter.

20、根据权利要求 19所述的移动性管理实体，其特征在于，所述连接切换单元包括： The mobility management entity according to claim 19, wherein the connection switching unit comprises:

接收模块，用于接收所述 eNB发送的 S1AP参数更新请求，所述 S1AP参数更新请求中携带 UE S1AP Pair参数以及 eNB重新分配的 eNB UE S1AP ID 参数； a receiving module, configured to receive an S1AP parameter update request sent by the eNB, where the S1AP parameter is The number update request carries the UE S1AP Pair parameter and the eNB UE S1AP ID parameter re-allocated by the eNB;

第二查询模块，用于按照所述 UE SI AP Pair参数查询对应的 UE数据；第二分配模块，用于根据查询到的 UE数据重新分配 MME UE S1AP ID 参数。 The second query module is configured to query the corresponding UE data according to the UE SI AP Pair parameter; and the second allocation module is configured to re-allocate the MME UE S1AP ID parameter according to the queried UE data.

21、根据权利要求 18至 20中任一项所述的移动性管理实体，其特征在于，所述移动性管理实体还包括： The mobility management entity according to any one of claims 18 to 20, wherein the mobility management entity further comprises:

请求接收单元，用于当第一 MME从故障中恢复时，接收第一 MME发送的 UE数据请求消息； a request receiving unit, configured to receive a UE data request message sent by the first MME when the first MME recovers from the fault;

释放控制单元，用于将对应的 UE数据发送至第一 MME, 并释放相应资源。 And a release control unit, configured to send the corresponding UE data to the first MME, and release the corresponding resource.

22、根据权利要求 18至 20中任一项所述的移动性管理实体，其特征在于，所述移动性管理实体还包括： The mobility management entity according to any one of claims 18 to 20, wherein the mobility management entity further comprises:

发送单元，用于当第一 MME从故障中恢复时，将当前用户设备临时标识未改变的用户设备临时标识发送至第一 MME, 使得第一 MME将所述用户设备临时标识标记为已被占用； a sending unit, configured to send, when the first MME recovers from the fault, the user equipment temporary identifier that is not changed by the current user equipment to the first MME, so that the first MME marks the user equipment temporary identifier as being occupied ;

处理单元，用于继续为所述用户设备临时标识对应的用户提供服务。 The processing unit is configured to continue to provide a service for the user that is temporarily identified by the user equipment.

23、一种移动性管理实体，其特征在于，包括： 23. A mobility management entity, comprising:

第一交互单元，用于与第二 MME交互配置信息； a first interaction unit, configured to exchange configuration information with the second MME;

第一接收单元，用于接收 eNB发送的 SCTP连接建立请求； a first receiving unit, configured to receive an SCTP connection establishment request sent by the eNB;

第一响应单元，用于向所述 eNB发送 SCTP连接建立响应，所述 SCTP 连接建立响应中包含第一 MME的地址以及第二 MME的地址。 And a first response unit, configured to send an SCTP connection setup response to the eNB, where the SCTP connection setup response includes an address of the first MME and an address of the second MME.

24、根据权利要求 23所述的移动性管理实体，其特征在于，所述移动性管理实体还包括： The mobility management entity according to claim 23, wherein the mobility management entity further comprises:

第二交互单元，用于将 SCTP连接所需参数、偶联端点所需参数以及对端每个传送地址所需参数发送至第二 MME。 And a second interaction unit, configured to send a required parameter of the SCTP connection, a parameter required for coupling the endpoint, and a parameter required for each transport address of the peer end to the second MME.

25、根据权利要求 23所述的移动性管理实体，其特征在于，所述移动性管理实体还包括： The mobility management entity according to claim 23, wherein the mobility management entity further comprises:

第二接收单元，用于接收 eNB发送的 S1连接建立请求，所述 S1连接建立请求中包含 eNB设备级参数； a second receiving unit, configured to receive an S1 connection establishment request sent by the eNB, where the S1 connection is established The eNB device level parameter is included in the request;

第二响应单元，用于向 eNB发送 S1连接建立响应，所述 S1连接建立响应中包含 GUMMEI以及 MME负载权重因子； a second response unit, configured to send an S1 connection setup response to the eNB, where the S1 connection setup response includes a GUMMEI and an MME load weighting factor;

第三交互单元，用于将 eNB设备级参数发送至第二 MME。 And a third interaction unit, configured to send the eNB device level parameter to the second MME.

26、一种通信***，其特征在于，包括： 26. A communication system, comprising:

演进基站 eNB , 用于获取第二 MME的地址，当第一 MME出现故障时，所述 eNB按照所述第二 MME的地址进行连接切换； The evolved base station eNB is configured to acquire an address of the second MME, and when the first MME fails, the eNB performs connection switching according to the address of the second MME;

所述第二 MME, 用于备份所述第一 MME上的用户业务数据，当所述第一 MME出现故障时，与 eNB进行连接切换，以处理所述第一 MME上的用户业务。 The second MME is configured to back up user service data on the first MME, and when the first MME fails, perform connection switching with the eNB to process user services on the first MME.

27、根据权利要求 26所述的通信***，其特征在于，所述通信***还包括： 27. The communication system of claim 26, wherein the communication system further comprises:

第一 MME, 用于与第二 MME交互配置信息；接收 eNB发送的 SCTP连接建立请求；向所述 eNB发送 SCTP连接建立响应，所述 SCTP连接建立响应中包含第一 MME的地址以及第二 MME的地址。 a first MME, configured to exchange configuration information with the second MME; receive an SCTP connection setup request sent by the eNB; and send an SCTP connection setup response to the eNB, where the SCTP connection setup response includes an address of the first MME and a second MME the address of.

28、根据权利要求 27所述的通信***，其特征在于， 28. The communication system of claim 27, wherein

所述第一 MME, 还用于将 SCTP连接所需参数、偶联端点所需参数以及对端每个传送地址所需参数发送至第二 MME。 The first MME is further configured to send a parameter required for the SCTP connection, a parameter required for coupling the endpoint, and a parameter required for each transmission address of the peer end to the second MME.

29、根据权利要求 27所述的通信***，其特征在于， 29. The communication system of claim 27, wherein:

所述第一 MME,还用于接收 eNB发送的 S1连接建立请求，所述 S1连接建立请求中包含 eNB设备级参数；向 eNB发送 S1连接建立响应，所述 S1连接建立响应中包含 GUMMEI以及 MME负载权重因子；将 eNB设备级参数发送至第二 MME。 The first MME is further configured to receive an S1 connection setup request sent by the eNB, where the S1 connection setup request includes an eNB device level parameter, and send an S1 connection setup response to the eNB, where the S1 connection setup response includes the GUMMEI and the MME. Load weighting factor; transmitting eNB device level parameters to the second MME.