Network protocol for wireless broadband isdn using atm

H - Electricity – 04 – Q

Patent

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Details

H04Q 11/04 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2237464

A networking protocol for wireless point (base station) to multipoint (user) networks where the users are stationary, which utilizes time division multiplexing in the direction of base station to user; i.e. the downstream direction; and time division multiple access in the direction from the user to the base station; i.e. the upstream direction. Time slots in the upstream and downstream directions carry ATM cells. Users maintain time slot synchronization to within 2 modulation symbols by monitoring downstream receptions (11) and central processing unit (7) tracks time slot assignments and handles in-band signaling while segmentation and reassembly (6) handles treatment of the ATM cells.

Cette invention se rapporte à un protocole de mise en réseau, qui est destiné à des réseaux sans fil de point (station de base) à multipoint (utilisateur), dans lesquels les utilisateurs sont fixes, et qui utilise à cet effet le multiplexage par répartion dans le temps dans la direction allant de la station de base à l'utilisateur, c'est-à-dire la direction aval, et l'accès multiple à répartition dans le temps dans la direction allant de l'utilisateur à la station de base, c'est-à-dire la direction amont. Les tranches de temps dans les directions amont et aval portent des cellules ATM. Les utilisateurs maintiennent la synchronisation des tranches de temps à l'intérieur des deux symboles de modulation, en contrôlant les réceptions aval (11) et l'unité centrale (7) suit les attributions des tranches de temps et gère la signalisation intrabande, pendant que l'unité de segmentation et réassemblage (6) gère le traitement des cellules ATM.

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