Mobile communication system having atm-based connecting scheme

Details Mobile communication system having atm-based connecting scheme Mobile communication system having atm-based connecting scheme

H - Electricity

04

L

H04L 12/56 (2006.01) H04B 7/26 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2315689

A mobile communication system introducing ATM, AAL2 and IMA techniques in order to efficiently transmit high-speed information and multimedia traffic having various properties, and to increase transmission efficiency in a limited transmission link or transmission band. An ATM cell processing device (170) for a mobile communication system comprises an ATM interface (190) for receiving ATM cells dispersedly transmitted or distributed over a plurality of physical links and restoring the received ATM cells into one ATM cell stream; an AAL2 (ATM Adaptation Layer 2) cell processor (180) for switching at least one AAL2 packet multiplexed within each ATM cell in the ATM cell stream according to routing information provided during call setup, multiplexing the switched AAL2 packets according to ATM connections, and creating an internal ATM cell having the same format as the received ATM cells; and an ATM switch (172) for switching the internal ATM cell according to the routing information.

Ce système de communication mobile met en oeuvre des techniques ATM, AAL2 (couche d'adaptation ATM 2) et IMA (multiplexage inverse ATM) pour transmettre efficacement des données et un trafic multimédia haute vitesse ayant diverses propriétés, et pour augmenter l'efficacité de la transmission dans une liaison de transmission ou bande de transmission restreinte. Un dispositif de traitement par cellule ATM (170) destiné à un système de communication mobile comprend une interface ATM (190) qui reçoit des cellules ATM transmises ou distribuées de manière dispersée sur une pluralité de liaisons physiques et les reconstitue en une chaîne continue de cellules ATM. Le dispositif comprend également une unité de traitement (180) par cellule AAL2 qui commute au moins un paquet AAL2 multiplexé à l'intérieur de chaque cellule ATM dans la chaîne continue de cellules ATM conformément aux informations d'adresse fournies pendant l'établissement de la communication, effectue le multiplexage des paquets AAL2 commutés conformément aux connexions ATM, et crée une cellule ATM interne présentant la même forme que les cellules ATM reçues. Le dispositif comprend en outre un sélecteur ATM (172) servant à commuter la cellule ATM interne conformément aux informations d'adresse.

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