System and method for transmitting subscriber data in a...

H - Electricity – 04 – B

Patent

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Details

H04B 7/212 (2006.01) H04Q 7/38 (2006.01) H04B 7/26 (2006.01)

Patent

CA 2383707

There is disclosed, for use in a narrowband wireless messaging network (100), a subscriber communication unit (124) that uses a miscellaneous ALOHA message to transmit predefined messages and/or formatted telemetry data to a base tension. The subscriber communication unit (124) comprises a transceiver (225) for receiving messages from the base station (112) in a forward channel and transmitting messages to the base station (112) in a reverse channel. The reverse channel is divided into a plurality of scheduled transmission time slots and a plurality of unscheduled transmission time slots of the ALOHA type. A message controller (210) receives input data generated by the subscriber communication unit (124) and translates the input data into a reverse channel message capable of being transmitted in an available unscheduled time slot, such as a miscellaneous ALOHA message time slot.

L'invention concerne une unité de communication d'abonné (124) à utiliser dans un réseau de messagerie sans fil à bande étroite (100) qui transmet à une base de données au moyen d'un message ALOHA, divers des messages prédéfinis et/ou des données de télémétrie formatées. Ladite unité (124) comprend un émetteur-récepteur (225) permettant de recevoir des messages provenant d'une station de base (112) dans un canal aller et de les transmettre à ladite station (112) dans un canal inverse. Ce dernier est divisé en plusieurs intervalles de temps de transmission planifiés et non planifiés du type ALOHA. Un contrôleur de messages (210) reçoit des données d'entrée générées par l'unité de communication d'abonné (124) et translate les données d'entrée dans un message de canal inverse pouvant être transmis dans un intervalle de temps non planifié disponible, tel qu'un intervalle de temps de message ALOHA divers.

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