Systems, methods and terminals that obtain coarse position...

Details Systems, methods and terminals that obtain coarse position... Systems, methods and terminals that obtain coarse position...

2005-03-22

2005-03-22

Cumming, William (Department: 2689)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C342S357490, C701S213000, C455S517000

Reexamination Certificate

active

06871061

ABSTRACT:
A mobile radiotelephone terminal having a satellite radiotelephone and a Global Positioning System (GPS) obtains a coarse position of the mobile radiotelephone terminal from satellite radiotelephone system communications. The GPS receiver uses the coarse position to determine an accurate position of the mobile radiotelephone terminal. Accordingly, by obtaining a coarse position from the satellite radiotelephone systems communications, the computation time for the GPS receiver to compute an accurate position of the mobile radiotelephone terminal may be reduced. By allowing a reduction of computation time by the GPS receiver, an accurate position may be obtained more quickly and/or with reduced power.

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