Multi-access CS-P/CD-E system and protocols on satellite channels applicable to a group of mobile users in close proximity
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United States of America Patent
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Apr 11, 2000
Issued Date -
N/A
app pub date -
Apr 28, 1997
filing date -
Nov 22, 1996
priority date (Note) -
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status (Latency Note)
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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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