Communication system

Details Communication system Communication system

1987-10-02

1989-08-29

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370100, 375111, H04J 316

Patent

active

048624535

ABSTRACT:
In a dynamic frame length slotted ALOHA system the synchronizing signals are transmitted by a base station at different frequencies (each having a period equivalent to a multiple of the time slot period). The different frequencies denote different frame lengths and the central stations detect these frequencies and select a frame length accordingly.

REFERENCES:
patent: 3602647 (1971-03-01), Kawashima
patent: 4160877 (1979-07-01), Vandermey
patent: 4398289 (1983-08-01), Schoute
patent: 4583221 (1986-04-01), Uchida etal.
patent: 4612637 (1986-09-01), Davis et al.
patent: 4648090 (1987-03-01), Maddern et al.
patent: 4653049 (1987-03-01), Shinayo
patent: 4686673 (1987-08-01), Hoffa
patent: 4782484 (1988-11-01), Limb

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