Interoffice phase synchronization system and interoffice...

H - Electricity – 04 – L

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Details

H04L 7/033 (2006.01) H04B 7/26 (2006.01) H04J 3/06 (2006.01)

Patent

CA 2211239

In a TDMA communication system having one master station and a plurality of slave ststions, phase synchronization of output frame phases between slave stations is established with quite simple construction. In the master station, a super frame consisted of a plurality of standard frames is generated in the super frame generating portion. In the master station, using a timing position matching loop already existing between the master station and the slave station, signal delay period between the slave station and the master station is derived. The delay period is transmitted superimposing on the frame in the super frame period. In the slave station, half period of the delay period defined by the delay information is calculated. The super frame is delayed for the corresponding period to out to the next stage service area. By this, phase of the super frame is synchronized between all of the slave stations.

Dans un système de communication AMRT comportant une station maîtresse et une pluralité de stations esclaves, la synchronisation des phases des trames de sortie entre les stations esclaves peut être réalisée avec une construction assez simple. Dans la station maîtresse, une supertrame constituée d'une pluralité de trames standard est engendrée. Dans la station maîtresse, à l'aide d'une boucle d'adaptation chronologique déjà installée entre la station maîtresse et la station esclave, le retard du signal entre la station esclave et la station maîtresse est déterminé. Cette période de retard est superposée à la période de la supertrame. Dans la station esclave, la moitié de la période de retard définie par l'information de retard est calculée. La supertrame est retardée de la période correspondante jusqu'au passage à la zone de service suivante. € ce moment, la phase de la supertrame est synchronisée entre toutes les stations esclaves.

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