05235633 is referenced by 398 patents and cites 12 patents.

A cellular telephone system includes a plurality of cell sites and a mobile telephone switching office. Call management, including selection of a cell site most appropriate for a call associated with a mobile unit, 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 a NAVSTAR global positioning system, or its equivalent. Each mobile unit includes a GPS receiver that receives information from a geostationary satellite 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.

Title
Cellular telephone system that uses position of a mobile unit to make call management decisions
Application Number
7/813494
Publication Number
5235633
Application Date
December 26, 1991
Publication Date
August 10, 1993
Inventor
Deborah J Shale
3020 Thunderbird Dr., Poland, 44514
OH, US
Scott L Jones
93 White Ave., Sharon, 16146
PA, US
Gregory T Pauley
99 Hilltop Blvd., Canfield, 44406
OH, US
Timothy J Duffy
102 Elliot Rd., West Middlesex, 16159
PA, US
Edwin L Nass
P.O. Box 92, 231 W. Main St., Canfield, 44406
OH, US
Everett Dennison
200 Glenview Rd., Canfield, 44406
OH, US
Agent
Terry M Gernstein
IPC
H04M 11/00
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