Substation apparatus for satellite communications

Details Substation apparatus for satellite communications Substation apparatus for satellite communications

1995-01-30

1996-09-10

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

370 951, 455 121, H04J 314, H04B 7185

Patent

active

055552420

ABSTRACT:
A substation apparatus for satellite communication in which communication between a master station and a plurality of substations is achieved via a communication satellite, wherein a large amount of burst data can be transmitted with small delay. A receiving unit receives a radio wave transmitted from another substation to the master station, and based on the output of the receiving unit, a transmission detecting unit determines whether another substation is transmitting data. When it is judged by the transmission detecting unit that data transmission from another substation is completed, a transmitting unit transmits data therefrom to the master station. If it is judged by the transmission detecting unit that no one of the other substations is transmitting data, the transmitting unit immediately transmits data therefrom to the master station.

REFERENCES:
patent: 4090036 (1978-05-01), Stott et al.
patent: 4688213 (1987-08-01), Raychaudhuri
patent: 4688216 (1987-08-01), Saburi
patent: 4742512 (1988-05-01), Akashi et al.
patent: 5216427 (1993-06-01), Yan et al.
patent: 5257257 (1993-10-01), Chen et al.

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