发明授权
US06975872B2 Always-on method for reinforcing existing mobile station E911-based location detection services applications
失效
用于加强现有移动台基于E911的位置检测服务应用的始终使用的方法
- 专利标题: Always-on method for reinforcing existing mobile station E911-based location detection services applications
- 专利标题(中): 用于加强现有移动台基于E911的位置检测服务应用的始终使用的方法
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申请号: US10708795申请日: 2004-03-26
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公开(公告)号: US06975872B2公开(公告)日: 2005-12-13
- 发明人: Steven D. Cheng
- 申请人: Steven D. Cheng
- 申请人地址: TW Tao-Yuan Hsien
- 专利权人: BenQ Corporation
- 当前专利权人: BenQ Corporation
- 当前专利权人地址: TW Tao-Yuan Hsien
- 代理机构: Winston Hsu
- 主分类号: H04M1/00
- IPC分类号: H04M1/00 ; H04W64/00 ; H04Q7/20
摘要:
A method of locating a mobile station that is turned off. The method includes turning off the mobile station while keeping a battery of the mobile station intact in the mobile station. The mobile station enters a soft power-off mode after the mobile station has been turned off if the battery of the mobile station has sufficient energy. The mobile station receives paging request messages from at least one base station and the mobile station measures RSSI levels for received paging request messages. The mobile station then selects a current base station for which the mobile station measures a strongest RSSI level. The mobile station handshakes with the current base station to enable the mobile station to camp on the current base station. Next, the mobile station reports its location to the current base station and the current base station informs authorities of the location of the mobile station.
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