Method for the transmission of data among mobile bodies or auton

Details Method for the transmission of data among mobile bodies or auton Method for the transmission of data among mobile bodies or auton

1991-11-13

1994-04-26

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 582, 455 671, 370 853, H04B 700

Patent

active

053075099

ABSTRACT:
A method which constructs, in each transmitter/receiver of a mobile body or vehicle, information tables recording the changes undergone by a radio channel by memorizing, during consecutive time intervals of a determined duration dT that are smaller than the period of recurrence T, of the statuses of the radio channel, namely "in collision", "busy" or "free". The method then sets fixed transmission instants in each transmitter/receiver, these fixed transmission instants being temporally spaced out at intervals equal to the recurrence period T, to predict the status of the channel for each fixed transmission instant as a function of the status of the channel memorized at the instant preceding it with a temporal shift equal to the period T, and in deciding to transmit at this instant if the predicted status of the channel is not a status of collision or to transmit at an instant deferred with respect to the predicted instant if the opposite is the case.

REFERENCES:
patent: 4439763 (1984-03-01), Limb
patent: 4514843 (1985-04-01), Albanese
patent: 4630264 (1986-12-01), Wah et al.
patent: 4672657 (1987-06-01), Dershowitz
patent: 4685105 (1987-08-01), Shikama et al.
patent: 4907290 (1990-03-01), Crompton
patent: 4979168 (1990-12-01), Courtois et al.
patent: 5068654 (1991-11-01), Husher
ICC 1980 Conference Record, Seattle, Wash., Jun. 8-12, 1980, pp. 21.4.1-21.4.7, P. Spilling, et al., "Digital Voice Communications in the Packet Radio Network".

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