Multi-access CS-P/CD-E system and protocols on satellite channel

Details Multi-access CS-P/CD-E system and protocols on satellite channel Multi-access CS-P/CD-E system and protocols on satellite channel

1997-04-28

2000-04-11

Olms, Douglas W.

Multiplex communications

Channel assignment techniques

Carrier sense multiple access

H04L 12413

Patent

active

060495480

ABSTRACT:
A multiple access RF communication system in which a plurality of mobile user transceivers communicate with a central hub transceiver through an earth orbiting satellite, and wherein groups of mobile user transceivers in close proximity with each other share a common multi-access inbound (to hub) frequency F.sub.l and a common outbound channel (from hub) frequency F.sub.o. Each said mobile user transceiver includes a continuously listening receiver for the outbound channel and a half-duplex transceiver on the inbound channel, determining the busy or idle status of the common inbound frequency F.sub.1, and a device to indicate the status of the carrier outbound channel, which controls the ability to transmit on the inbound channel.

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