Invention Grant
- Patent Title: Method and system for handover between wireless local area network and wireless wide area network
- Patent Title (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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Application No.: US10571815Application Date: 2004-08-19
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Publication No.: US07962140B2Publication Date: 2011-06-14
- Inventor: Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
- Applicant: Lei Feng , Xiaoling Shao , Xiaohui Jin , Yonggang Du , Bo Liu , Xiaolu Sun
- Applicant Address: CH Geneva
- Assignee: ST-Ericsson SA
- Current Assignee: ST-Ericsson SA
- Current Assignee Address: CH Geneva
- Priority: CN03124909 20030919
- International Application: PCT/IB2004/051496 WO 20040819
- International Announcement: WO2005/029901 WO 20050331
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W4/00 ; H04M1/00
Abstract:
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.
Public/Granted literature
- US20070082671A1 Method and system for handover between wireless local area network and wireless wide area network Public/Granted day:2007-04-12
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