Cellular telephone system that uses position of a mobile unit to

Details Cellular telephone system that uses position of a mobile unit to Cellular telephone system that uses position of a mobile unit to

1995-11-22

1998-09-29

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455404, 455406, 455428, 342450, H04Q 720

Patent

active

058158146

ABSTRACT:
A cellular telephone system (20) includes a plurality of cell sites (14) and a mobile telephone switching office (MTSO,12). Call management, including selection of a cell site most appropriate for a call associated with a mobile unit (M,M') are made based on the geographic location of the mobile unit as opposed to the strength of the signal associated with the call. The geographic location of the mobile unit is precisely determined using triangulation, a NAVSTAR global positioning system, or its equivalent. Each mobile unit includes a GPS receiver (24) that receives information from a geostationary satellite (22) to determine the precise location of the mobile unit. This position information is relayed to the cell site initially managing the mobile unit, and the mobile unit is handed off to a cell site that is most appropriate for the call. Initial selection of an entrance cell site is made based on signal strength, but further call management decisions are made based on location of the mobile unit.

REFERENCES:
patent: 4144411 (1979-03-01), Frenkiel
patent: 5170490 (1992-12-01), Cannon et al.
patent: 5214789 (1993-05-01), George
patent: 5235633 (1993-08-01), Dennison et al.
patent: 5303297 (1994-04-01), Hillis
patent: 5321514 (1994-06-01), Martinez

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