发明申请
- 专利标题： Method and system for handover between wireless local area network and wireless wide area network
- 专利标题（中）： 无线局域网与无线广域网之间切换的方法和系统
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申请号： US10571815申请日： 2004-08-19
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公开(公告)号： US20070082671A1公开(公告)日： 2007-04-12
- 发明人: Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
- 申请人： Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
- 申请人地址： NL Eindhoven 5621 BA
- 专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人地址： NL Eindhoven 5621 BA
- 优先权： CN03124909.4 20030919
- 国际申请： PCT/IB04/51496 WO 20040819
- 主分类号： H04Q7/20
- IPC分类号： H04Q7/20
摘要：
A method to be performed by a user terminal with WWAN and WLAN interfaces, comprising steps of: communicating via the WWAN interface; inspecting whether its WLAN interface is available; entering into a WWAN-to WLAN state from a WWAN active state if its WLAN interface is available; said user terminal provides a public server with known network address with its presence information said WWAN-to-WLAN state; and acquiring the network address of another user terminal communicating with said user terminal from said server, sending a WLAN call request to said another user terminal by using said address; entering into WLAN active state after receiving the message for accepting the WLAN call request from said another user terminal.
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