Mobile satellite communication system

Details Mobile satellite communication system Mobile satellite communication system

1994-06-07

1996-06-18

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

455 121, 455 331, 455 541, G01S 502

Patent

active

055282474

ABSTRACT:
The present invention relates to a mobile satellite communication system. It is the object of the invention to provide a mobile satellite communication system capable of monitoring a location of a mobile station by data on its absolute location on the ground L, in lieu of relative monitoring thereof with respect to satellite base stations, to thereby ensure an effective location registration and suppress an increase of traffic in communication lines arising from location registrations. The satellite base stations are each equipped with a navigation signal generator for issuing navigation signals. The mobile station detects its absolute location on the ground L based on the navigation signals received from the satellite base stations, and executes its location registration procedure by use of identification data (communication zone ID) associated with the communication zone in which it lies and which is determined by the thus detected absolute location data.

REFERENCES:
patent: 4797677 (1989-01-01), MacDoran et al.
patent: 4943808 (1990-07-01), Dulck et al.
patent: 5339353 (1994-08-01), Asahara et al.
patent: 5343512 (1994-08-01), Wang et al.

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