SATELLITE TELECOMMUNICATIONS SYSTEM USING NETWORK COORDINATING GATEWAYS OPERATIVE WITH A TERRESTRIAL COMMUNICATION SYSTEM

申请公布号：CA2078932(A1)

申请号：CA19922078932

申请日期：1992.09.23

申请公布日期：1993.04.11

申请人：

SPACE SYSTEMS/LORAL, INC.

发明人：WIEDEMAN, ROBERT A.;MONTE, PAUL A.

分类号：H04B7/204;H04B7/15;H04B7/185;H04Q7/38;(IPC1-7):H04B7/185

主分类号：H04B7/204

摘要：A wireless telephone system capable of servicing a roaming wireless telephone user includes a satellite communications system consisting of at least one orbiting satellite, at least one terrestrial-based gateway having access to a database of users, destination codes (telephone numbers); a network coordinating gateway within a satellite service area; a network 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 single relay satellites wherein the relay station may be in motion relative to the end user transceiver apparatus and the terrestrial communications link. The ground-based gateway effects the ultimate decision on linking in cooperation with the network database to effect hand-off from a first orbiting satellite to a second orbiting satellite. The single satellite or preferably a constellation of satellites orbiting near the earth need only translate signals from the gateways to the users and from the users to the gateways without satellitebased control. The gateways are capable of decoding the calls, switching, processing call requests from the end users, processing call requests to the end users, processing call set-ups, handing off of calls to other satellites, and updating databases of users based on information provided by network control and requests from end users.

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