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    • 2. 发明申请
    • METHOD AND DEVICE FOR UPDATING USER CONTEXT
    • 用于更新用户背景的方法和设备
    • WO2011120472A3
    • 2012-04-19
    • PCT/CN2011073885
    • 2011-05-10
    • HUAWEI TECH CO LTDZENG MEIYANDAI MINGZENG
    • ZENG MEIYANDAI MINGZENG
    • H04L29/08
    • H04W36/0038H04W12/04
    • A method and device for updating user context are disclosed in the present invention, wherein, the method for updating user context includes: receiving a user context update request message sent from a Mobility Management Entity (MME), wherein the user context update request message carries a new security key, security capability and voice fallback indicator (100); performing key update and/or voice fallback according to the new security key, security capability and voice fallback indicator (101); sending a user context update response message to the MME, wherein the user context update response message carries cause values corresponding to the operation result of performing key update and/or the operation result of performing voice fallback (102). The MME in the embodiment of the present invention adopts different measures for different operation results, thereby preventing wrong actions to the operation results of performing voice fallback and key update of a base station, avoiding User Equipment (UE) call drop and voice fallback failure and reducing waste of signaling resources.
    • 在本发明中公开了一种用于更新用户上下文的方法和装置,其中,用于更新用户上下文的方法包括:接收从移动性管理实体(MME)发送的用户上下文更新请求消息,其中用户上下文更新请求消息携带 新的安全密钥,安全能力和语音后退指示符(100); 根据新的安全密钥,安全能力和语音后退指示符(101)执行密钥更新和/或语音回退; 向所述MME发送用户上下文更新响应消息,其中所述用户上下文更新响应消息携带与执行密钥更新的操作结果相对应的原因值和/或执行语音后退的操作结果(102)。 本发明实施例的MME对于不同的运行结果采用不同的措施,从而防止对执行基站的语音回退和密钥更新的操作结果的错误动作,避免用户设备(UE)的呼叫丢弃和语音回退故障, 减少信令资源的浪费。