Method for accessing and providing access to a packet channel

Details Method for accessing and providing access to a packet channel Method for accessing and providing access to a packet channel

H - Electricity

04

J

H04J 3/16 (2006.01) H04B 7/26 (2006.01)

Patent

CA 2321867

A communications system (100) has a TDMA signal (110) accessed by one or more mobile stations (104). The TDMA signal carries both circuit switched and packet data service. A packet channel is defined within a packet data frame (208) by assigning time slots not used by other services during the packet data frame to the packet channel. A packet data seed channel (204) is used to anchor the packet channel and steer a mobile station to the packet channel. In the packet data seed channel a dynamic allocation protocol (DCAP) slot (206) appears and carries the packet channel slot assignments for the next occurring packet data frame.

L'invention concerne un système de communication (100) comportant un signal TDMA (110) auquel ont accès une ou plusieurs stations mobiles (104). Le signal TDMA transporte un service de transmission de données à commutation de circuits et de données en paquets. On définit un canal de données à l'intérieur d'une trame (208) de données en paquets en attribuant des créneaux temporels non utilisés par d'autres services pendant la trame de données en paquets au canal de paquets. Un canal de départ (204) de données en paquets permet d'ancrer le canal de paquets et d'orienter une station mobile vers le canal de paquets. Dans le canal de départ de données en paquets, un créneau (206) de protocole d'allocation dynamique (DCAP) apparaît et transporte les attributions de créneau de canal de paquets pour la trame de données en paquets suivante.

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