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    • 1. 发明申请
    • FAST HANDOVER USING SIP
    • 快速切换使用SIP
    • WO2007113524A2
    • 2007-10-11
    • PCT/GB2007/001185
    • 2007-03-30
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANYREID, Gidon, MosheJOVER APARICIO, FernandoSINGH, Devinder
    • REID, Gidon, MosheJOVER APARICIO, FernandoSINGH, Devinder
    • H04L29/06027H04L29/12009H04L61/00H04L65/1006H04L65/608H04W8/26H04W80/04
    • A method of handling a data stream during a handover in a communications network comprising a first user agent having a fixed address, a proxy server and a second user agent, said method comprising the steps of: mapping at the proxy server the fixed address with a dynamic network address allocated to the first user agent; sending a request by the first user agent to the second user agent for a data stream; generating by the second user agent in response to the request a plurality of messages each comprising part of the data stream requested and the fixed address of the first user agent, wherein the message is a session initiation protocol message, and sending the messages to the proxy server; receiving the messages at the proxy server and determining the mapped dynamic network address corresponding to the fixed address in the message, and forwarding the messages to the determined dynamic network address; and when the first user agent is allocated a new dynamic network address, replacing by the proxy server the mapped dynamic network address with the new dynamic network address and forwarding the received messages to the new dynamic network address.
    • 一种在通信网络中的切换期间处理数据流的方法,包括具有固定地址的第一用户代理,代理服务器和第二用户代理,所述方法包括以下步骤:在代理服务器处将固定地址映射到 分配给第一用户代理的动态网络地址; 将第一用户代理的请求发送给数据流的第二用户代理; 由所述第二用户代理响应于所述请求生成多个消息,每个消息包括所请求的数据流的一部分和所述第一用户代理的固定地址,其中所述消息是会话发起协议消息,并且将消息发送到所述代理 服务器; 在所述代理服务器处接收所述消息,并且确定与所述消息中的固定地址相对应的所映射的动态网络地址,以及将所述消息转发到所确定的动态网络地址; 并且当第一用户代理被分配新的动态网络地址时,由代理服务器替换映射的动态网络地址与新的动态网络地址,并将接收到的消息转发到新的动态网络地址。