Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-09-29
2008-08-05
Le, Danh C (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456500, C455S456100, C340S539130, C340S539100
Reexamination Certificate
active
07409219
ABSTRACT:
A user may locate a missing wireless device through a location server storing user-associated location information. A wireless device includes a client location application adapted to determine a current geographic location and transmit location data to a location server, a power source, and a power management application adapted to detect a low power level and instruct the client location application to determine the current geographic location. The wireless device further includes a GPS receiver adapted to receive and decode GPS signals and a personal GPS directory storing location information associated with the subscriber unit.
REFERENCES:
patent: 6006096 (1999-12-01), Trompower
patent: 2001/0026240 (2001-10-01), Neher
patent: 2003/0210186 (2003-11-01), Sollenberger et al.
patent: 2005/0096102 (2005-05-01), Mock et al.
patent: 2005/0239443 (2005-10-01), Watanabe et al.
Le Danh C
Nextel Communications Inc.
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