Multiplex communications – Wide area network – Packet switching
Patent
1993-05-17
1994-11-22
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 306
Patent
active
053675240
ABSTRACT:
Sequential data transmission by a plurality of communication units may be achieved in a communication system by using an accurate external clock and transmitting at predetermined time intervals or time slots. By using a GPS clock signal as the external clock, a communication system may determine a cycle time and duration of time slots such that each communication unit is allocated a time slot for data transmission. This approach eliminates the need for polling of communication units and substantially reduces data congestion on control channels of the communication system.
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patent: 3924187 (1975-12-01), Dormans
patent: 4086537 (1978-04-01), Asakawa et al.
patent: 4107608 (1978-08-01), Saburi
patent: 4591730 (1986-05-01), Pennoni
patent: 4777633 (1988-10-01), Fletcher et al.
patent: 5068916 (1991-11-01), Harrison et al.
Mills Donald C.
Rideout, Jr. Kenneth E.
Jung Min
Markison Timothy W.
Motorola Inc.
Olms Douglas W.
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