Transmitting and receiving long messages in a wireless...

H - Electricity – 04 – Q

Patent

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Details

H04Q 7/08 (2006.01) H04Q 7/10 (2006.01) H04Q 7/18 (2006.01) H04Q 7/14 (2006.01) H04Q 7/16 (2006.01)

Patent

CA 2192487

A receiver operates in both a first polling protocol and in a selectable data acquisition protocol to both conserve power while quickly read long messages in wireless one-way communication systems. The receiver first polls data transmissions at a relatively slow periodic rate to identify messages. When the receiver identifies a corresponding address in the data transmission, a format packet directs the receiver to acquire data using a second data acquisition protocol independent of the polling protocol. The data acquisition protocol enables long messages to be communicated in a fast, highly reliable manner. After the long message is successfully transmitted, the receiver automatically reverts back into a polling protocol to conserve power.

Un récepteur fonctionne selon un premier protocole d'appel préalable, puis selon un second protocole sélectionnable d'acquisition de données, ce qui permet à la fois d'économiser de l'énergie et d'effectuer la lecture rapide des messages longs au moyen d'un système de liaisons sans fil unidirectionnelles. Le récepteur premièrement scrute les transmissions de données à un rythme périodique relativement lent pour identifier les messages, puis, lorsqu'il a identifié une adresse correspondante dans la transmission de données, un paquet de formatage l'amène à recevoir les données en utilisant un second protocole d'acquisition de données, indépendant du protocole d'appel préalable, qui permet la transmission rapide et fiable des messages longs. Après transmission d'un message long le récepteur revient automatiquement au protocole d'appel préalable pour économiser l'énergie.

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