Multiplex communications – Wide area network – Packet switching
Patent
1984-01-20
1985-11-26
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 306
Patent
active
045557829
ABSTRACT:
An SS/TDMA communication system comprises a multiplicity of ground stations, including one master station and a number of traffic stations without control function, exchanging digitized voice or other message signals via a relay station aboard a satellite. Each ground station comprises base-band equipment including a transmitting section, a receiving section and a control unit. The control unit of the master station generates outgoing timing signals and processes incoming timing signals for synchronizing the operations of its own equipment and that of the traffic stations with the operation of a switching unit of the satellite-borne relay station; this control unit also emits routing instructions for that switching unit. The transmitting section of each ground station is served by an independent time base while its receiving section has a time base locked to the clock of the satellite; both time bases are adjustable by the associated control unit for correlation with the timing signals sent to and received back from the relay station.
REFERENCES:
patent: 4315330 (1982-02-01), Brickman et al.
patent: 4319352 (1982-03-01), Gupta et al.
patent: 4397018 (1983-08-01), Fennel, Jr. et al.
Alaria Gian B.
Appiano Silvano
Destefanis Paolo
Poggio Cesare
Cselt Centro Studi e Laboratori Telecomunicazioni SpA
Dubno Herbert
Olms Douglas W.
Ross Karl F.
Scutch III Frank M.
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