Data transmission installation of the radio network type, and co

Details Data transmission installation of the radio network type, and co Data transmission installation of the radio network type, and co

1997-11-07

2000-02-08

Ton, Dang

Multiplex communications

Duplex

370351, H04J 302

Patent

active

060234571

ABSTRACT:
A data transmission installation includes at least two data processing tenals(Pa,Pb), each equipped with a network interface(Ia,Ib) fro transmitting messages on request, and collecting received messages, a transmission/reception management device(ARC) giving instructions confirming transmission or reception, a test unit for defining a recognized collision, and a unit for resolving collisions, following a recognized collision condition. Each of the data processing terminals includes a multi-directional radio transmission/reception device controlled in accordance with the confirming instructions fro the transmission of messages to be exchanged. In response at least to the start of an instruction confirming transmission, the radio transmission/reception device operates in rapidly alternating transmission/reception, according to a pattern chosen in order to be peculiar to the data processing terminal. The test unit is configured to recognize a collision if a signal of a level greater than a first level threshold is received during a substantial part of at least one silence in the rapidly alternating transmission/reception.

REFERENCES:
patent: 4665519 (1987-05-01), Kirchner et al.
patent: 5040175 (1991-08-01), Tuch et al.
patent: 5418784 (1995-05-01), Rakerishman et al.
patent: 5689510 (1997-11-01), Jacquet et al.

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