Method for establishing DAMA radiotelephone conversations by single-span satellite transmission
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United States of America Patent
Stats
-
Jan 3, 1984
Grant Date -
N/A
app pub date -
Jul 31, 1981
filing date -
Aug 6, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a radiotelephone system comprising a ground central station and a plurality of peripheral stations having access to a geostationary satellite, demand-assignment multiple-access (DAMA) conversations are established by single-span transmission between subscribers of the peripheral stations. In order to prevent conflicts arising from two simultaneous call demands, a rectangular-wave synchronization signal is transmitted by the central station to the peripheral stations in a specialized channel and the demands are caused to coincide with the active wavefronts of the synchronization signal.
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