Data transmission system with relay stations between a...

Details Data transmission system with relay stations between a... Data transmission system with relay stations between a...

H - Electricity

04

B

H04B 7/155 (2006.01) H04L 12/44 (2006.01)

Patent

CA 2302501

A decentralized digital data transmission system has a large number of distributed stations which can only engage in direct data communication with neighbouring stations. Stations located between a source station and a target station function as relay stations. Station to station transmission occurs in each case on different channels. In each station signals received by a reception channel are converted onto a different transmission channel. Conversion of a bit flow or symbol flow arriving at said reception channel is carried out on a bit-by-bit or symbol-by-symbol basis so that data is transmitted in a continuous flow without long delays occurring during conversion as is the case for transmission of data packets. A coupling matrix (KM) is used for conversion. Each channel (C1...Cn) is divided into a plurality of sub-channels (CH-1...CH-8). Transmission channels are allocated in such a way that each station uses wherever possible only sub-channels (SC1...SC8) located in the same channel.

Selon l'invention, un système de transmission de données numérique décentralisé présente de nombreuses stations réparties, qui peuvent effectuer un échange de donnés uniquement avec des stations voisines. Les stations se trouvant entre une station source et une station cible font fonction de stations relais. La transmission d'une station à l'autre s'effectue à chaque fois sur des canaux différents. Dans chaque station est effectuée une conversion des signaux reçus par un canal de réception, sur un canal d'émission différent de ce dernier. La conversion d'un train de bits ou de symboles arrivant sur le canal de réception s'effectue symbole par symbole ou bit par bit, de sorte que les données sont transmises en flux continu, sans apparition de retards importants lors de la conversion, comme cela se produit lors de la transmission par paquets. Une matrice de couplage (KM) est utilisée pour la conversion. Chaque canal (C1...Cn) est divisé en une pluralité de canaux secondaires (CH-1...CH-8). L'affectation des canaux s'effectue de sorte que chaque station utilise, pour l'émission, si possible uniquement les canaux secondaires (SC1...SC8) situés dans le même canal.

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