Communication system with direct link to satellite

Details Communication system with direct link to satellite Communication system with direct link to satellite

1996-12-30

1999-11-30

Oen, William

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

Directive

Including a satellite

G01S 502, H04B 7185

Patent

active

059950412

ABSTRACT:
A communication system includes satellites and satellite phones communicating through the satellites directly. The satellite phone forms a highly directed beam toward a satellite of the communications system and adaptively maintains a beam to track the satellite as the satellite phone and/or the satellite moves relative to each other. The satellite phone contains sensors which provide steering information for directing the satellite phone's antenna beam. The communication system links a satellite phone with either another satellite phone and/or a ground based communication system connected to conventional telephone stations. The satellite phone also includes a database that contains the positional information of all potential communication satellites. The communication system coordinates satellite phone beams with a satellite network to facilitate high quality handoffs. Satellite phones can access several satellite networks based upon stored parameters or actively downloaded satellite information.

REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5287541 (1994-02-01), Davis et al.
patent: 5347286 (1994-09-01), Babitch
patent: 5412660 (1995-05-01), Chen et al.
patent: 5414432 (1995-05-01), Penny, Jr. et al.
patent: 5559806 (1996-09-01), Kurby et al.
patent: 5612701 (1997-03-01), Diekelman

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