Apparatus for exchanging data between a central station and...

Details Apparatus for exchanging data between a central station and... Apparatus for exchanging data between a central station and...

H - Electricity

04

J

H04J 3/02 (2006.01) H04B 10/10 (2006.01) H04L 12/28 (2006.01) H04Q 7/22 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2189957

An apparatus is provided for exchanging data between a central station (12) and a plurality of wireless remote stations (14) on a time division multiple access communication channel. The apparatus includes means for receiving access requests from remote stations of the plurality of remote stations (14) during a first time interval under a contention based protocol and a based protocol and means for polling for data transfers during a second time period remote stations (14) of the plurality of remote stations providing access requests under based protocols during the first time period.

Un appareil permet d'échanger des données entre une station centrale (12) et une pluralité de stations (14) radiophoniques éloignées par un canal de communication à accès multiple partagé dans le temps. L'appareil comprend un dispositif de réception de demandes d'accès de la pluralité de stations éloignées (14) pendant une première période sur la base d'un protocole qui s'applique en cas de conflits d'accès et d'un protocole qui s'applique en l'absence de conflits d'accès, et un dispositif qui interroge pendant une deuxième période les stations éloignées (14) qui ont demandé l'accès pendant la première période de temps sur la base de protocoles qui s'appliquent en l'absence de conflits d'accès pour demander si elles ont des données à transférer.

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