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1. 发明申请

WO2009058541A1 METHOD AND SYSTEM FOR PROVIDING A SEAMLESS HANDOFF BETWEEN COMMUNICATION NETWORKS 审中-公开
标题翻译：提供通信网络之间的无缝切换的方法和系统
公开(公告)号：WO2009058541A1
公开(公告)日：2009-05-07
申请号：PCT/US2008/079510
申请日：2008-10-10
申请人： MOTOROLA, INC. , PROMENZIO, Edgardo L., , IDNANI, Ajaykumar R., , LIU, Yi-Cheng, , STEPHEN, Patrick G.,
发明人： PROMENZIO, Edgardo L., , IDNANI, Ajaykumar R., , LIU, Yi-Cheng, , STEPHEN, Patrick G.,
IPC分类号： H04W36/14
CPC分类号： H04W36/0066 , H04L65/1006 , H04L65/1083
摘要： Disclosed is a method that includes initiating a handoff (403) by transmitting a handoff (403) start message to a mobility manager by a first mobile station. The first mobile station is in a call with a second mobile station and moving out from a first communication network to a second communication network. The handoff start message comprises a first call context. The first communication network comprises various network entities such as a SIP server, mobility manager, and the like. The method further includes creating a SIP instance (404) in the mobility manager to hold the first call context. Further, a handoff extension call is placed (405) by the first mobile station to the SIP server via the second communication network and once the handoff extension call is placed, an INVITE message is sent (406) from the SIP server to a preconfigured extension of the mobility manager. The INVITE message comprises a second call context. Thereafter, the handoff extension call is redirected (409) from the second communication network to the first communication network via the mobility manager, in response to the INVITE message received by the preconfigured extension of the mobility manager.
摘要翻译：公开了一种方法，其包括通过由第一移动台向移动性管理器发送切换（403）开始消息来发起切换（403）。第一移动站与第二移动站进行通话，并从第一通信网络移出到第二通信网络。切换开始消息包括第一呼叫上下文。第一通信网络包括诸如SIP服务器，移动性管理器等的各种网络实体。该方法还包括在移动性管理器中创建SIP实例（404）以保持第一呼叫上下文。此外，由第一移动站经由第二通信网络将切换分机呼叫（405）发送给SIP服务器，并且一旦设置了切换分机呼叫，则从SIP服务器向预配置的分机（406）发送INVITE消息（406）的流动经理。 INVITE消息包括第二呼叫上下文。此后，响应于由移动性管理器的预先配置的扩展接收到的INVITE消息，通过移动性管理器将切换分机呼叫从第二通信网络重定向到第一通信网络（409）。

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