05303286 is referenced by 356 patents and cites 31 patents.

A wireless telephone system capable of servicing a roaming wireless telephone user includes a satellite communications system consisting of one or more orbiting satellites, each carrying a database of users, destination codes and call codes, within a satellite service area, a satellite control center, and a plurality of terrestrial communications links. The system operates by effecting communication between a terrestrial wireless telephone end user transceiver apparatus and a terrestrial communications link via a single relay through a single satellite or a succession of satellites wherein the relay station may be in motion relative to the end user transceiver apparatus and the terrestrial communications link, wherein the orbiting relay station effects the ultimate decision on linking based on stored on-board information and on-board processing, and wherein the end user transceiver apparatus, the orbiting satellite and the terrestrial communications link are operative in cooperation with the on-board database to effect hand-off from a first orbiting satellite to a second orbiting satellite. The satellite system is a single satellite or preferably a constellation of satellites orbiting near the earth, all of which are capable receiving requests for calls and participating in the call routing and call setup on an autonomous basis.

Title
Wireless telephone/satellite roaming system
Application Number
7/678931
Publication Number
5303286
Application Date
March 29, 1991
Publication Date
April 12, 1994
Inventor
Robert A Wiedeman
Los Altos
CA, US
Agent
Kenneth R Allen
Edward J Radlo
Assignee
Space Systems Loral
CA, US
IPC
G01J 1/34
H04B 1/00
H04B 7/185
H04M 11/00
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