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1. 发明申请

WO2007113524A3 FAST HANDOVER USING SIP 审中-公开
标题翻译：使用SIP快速切换
公开(公告)号：WO2007113524A3
公开(公告)日：2007-11-29
申请号：PCT/GB2007001185
申请日：2007-03-30
申请人： BRITISH TELECOMM , REID GIDON MOSHE , JOVER APARICIO FERNANDO , SINGH DEVINDER
发明人： REID GIDON MOSHE , JOVER APARICIO FERNANDO , SINGH DEVINDER
IPC分类号： H04L29/12 , H04L29/06
CPC分类号： H04L29/06027 , H04L29/12009 , H04L61/00 , H04L65/1006 , H04L65/608 , H04W8/26 , H04W80/04
摘要： 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.
摘要翻译：一种在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的通信网络中处理数据流的方法，所述方法包括以下步骤：在代理服务器处映射固定地址与分配给第一用户代理的动态网络地址; 由第一用户代理向第二用户代理发送数据流的请求; 由第二用户代理响应于该请求而生成多个消息，每个消息包括所请求的数据流的一部分和第一用户代理的固定地址，其中该消息是会话发起协议消息，并且将消息发送到代理服务器; 在代理服务器接收消息，并确定消息中固定地址对应的映射动态网络地址，并将消息转发给确定的动态网络地址; 并且当第一用户代理被分配了新的动态网络地址时，由代理服务器用新的动态网络地址代替映射的动态网络地址并且将接收到的消息转发到新的动态网络地址。

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