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    • 8. 发明公开
    • Simplified UE + ENB messaging
    • Vereinfachte UE- + eNB-Nachrichtenübermittlung
    • EP2557889A1
    • 2013-02-13
    • EP12161621.3
    • 2012-03-27
    • Research In Motion Limited
    • Rayavarapu, Venkata Ratnakar RaoAnderson, Nicholas WilliamBurbidge, Richard CharlesYoung, Gordon Peter
    • H04W76/02
    • H04W76/19H04W76/27
    • A method, mobile device (101) and radio access network RAN (102) are disclosed for suspending and re-establishing a radio resource control (RRC) connection. In some examples, the mobile device (101) indicates a preference to have the RRC connection either suspended or released. In other examples, RAN (102) sends to the mobile device (101) a connection suspend command message instructing the mobile device to suspend a RRC connection with the RAN (102). The mobile device (101), in response to the connection suspend command message, suspends the RRC connection. When the RRC connection is suspended the mobile device (101) cannot transmit or receive user plane data to the RAN (102) and performs functions the same as or similar to idle mode functions. On suspension, RRC connection information is stored and can be used to re-establish the suspended RRC connection. The RRC connection information can be stored at the UE and/or the RAN node or some other network element. In order to re-establish the RRC connection, the mobile device (101) in one example sends a connection re-establishment request message to the RAN (102) to have the suspended RRC connection re-established. The RAN node may need to attempt to retrieve the RRC connection data (either from memory or if from another network element if stored elsewhere / if the RRC connection was suspended by another RAN node) and verifies whether the RRC connection is valid. When verified, the mobile device (101) receives, in response to the connection re-establishment request message, a connection re-establishment command message from the RAN (102). In response to the connection re-establishment command message, the mobile device (101) re-establishes the RRC connection with the RAN (102), using the stored RRC connection information, and sends a connection re-establishment complete message to the RAN (102). The mobile device (101) and RAN (102) may then resume user plane data communication with each other.
    • 公开了用于暂停和重新建立无线电资源控制(RRC)连接的方法,移动设备(101)和无线电接入网络RAN(102)。 在一些示例中,移动设备(101)指示将RRC连接暂停或释放的优先级。 在其他示例中,RAN(102)向移动设备(101)发送指示移动设备暂停与RAN(102)的RRC连接的连接挂起命令消息。 移动设备(101)响应于连接暂停命令消息暂停RRC连接。 当RRC连接暂停时,移动设备(101)不能向RAN(102)发送或接收用户平面数据,并且执行与空闲模式功能相同或类似的功能。 在暂停时,存储RRC连接信息,并且可以用于重新建立暂停的RRC连接。 RRC连接信息可以存储在UE和/或RAN节点或其他一些网络元件。 为了重新建立RRC连接,一个示例中的移动设备(101)向RAN(102)发送连接重建请求消息以重新建立挂起的RRC连接。 RAN节点可能需要尝试从存储器检索RRC连接数据,或者如果存储在另一个网络元件(如果另一个RAN节点暂停了RRC连接),并且验证RRC连接是否有效。 当验证时,移动设备(101)响应于连接重建请求消息从RAN(102)接收连接重建命令消息。 响应于连接重建命令消息,移动设备(101)使用存储的RRC连接信息重新建立与RAN(102)的RRC连接,并且向RAN发送连接重建完成消息( 102)。 然后,移动设备(101)和RAN(102)可以恢复彼此之间的用户平面数据通信。