Method and apparatus for preventing message collisions in a half

Multiplex communications – Duplex – Communication over free space

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Details

370236, 370468, G06F 1100, H04B 714, H04J 316

Patent

active

061479780

ABSTRACT:
In a half-duplex communication system in which additional delays in the communication channel may cause a message collision between a message and a response, a timer based collision prevention circuit is utilized to prevent the message collision. The collision prevention circuit determines if the message transmitted by a communication device will be repeated. If the message is to be repeated, the collision prevention circuit sets a countdown collision timer to a predetermined period of time shorter than the shortest repetition interval of the repeated message. A response is only sent to the communication device if the collision timer has not expired. If the timer expires, the collision prevention circuit waits for the message to be retransmitted by the source device before sending the response to the communication device.

REFERENCES:
patent: 4736249 (1988-04-01), Iizuka et al.
patent: 4742514 (1988-05-01), Goode et al.
patent: 4750165 (1988-06-01), Champagne
patent: 5282238 (1994-01-01), Berland
patent: 5526355 (1996-06-01), Yang et al.
patent: 5561844 (1996-10-01), Jayapalan et al.
patent: 5726976 (1998-03-01), Thompson et al.
patent: 5734643 (1998-03-01), Rondeau
patent: 5790641 (1998-08-01), Chan et al.
patent: 5896443 (1999-04-01), Dichter
S. Dimolitsas et al., "Real-time Transmission of Group 3 Facsimile Over Interconnected Public Switched Digital Mobile Satellite Networks", Comsat Technical Review, 1992, pp. 125-145.

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