Multiple access satellite communication system for...

Details Multiple access satellite communication system for... Multiple access satellite communication system for...

H - Electricity

04

J

363/11

H04J 3/02 (2006.01) H04B 7/212 (2006.01) H04L 1/00 (2006.01) H04L 1/16 (2006.01)

Patent

CA 2019600

- 54 - ABSTRACT OF THE DISCLOSURE A multiple access satellite communication system in which a plurality of mini-earth stations each transmits data packets to a hub earth station via a satellite over an inbound channel, while the hub station transmits to the mini-earth stations in a broadcast mode over outbound channels. Each mini-earth station selectively uses a fixed assignement access method, random access method, and demand assignment access method, depending on the frequency of the transmission from a terminal connected thereto, the amount of transmitted data, and whether or not the transmission from the terminal is periodic. The hub station outputs a reception response signal to the outbound channels by determining whether or not a conflict of data packets or a transmission error has occurred on the inbound channels. Packets for re-transmission are sent out to the inbound channels by the demand assignment access method at all times, with no regard to the access method used at the time of transmission.

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