Aal2 processing device and method for atm network

Details Aal2 processing device and method for atm network Aal2 processing device and method for atm network

H - Electricity

04

L

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

Patent

CA 2315692

there is provided an AAL2 processing device comprising an AAL2 synchronizer for receiving an AAL2 cell in which at least one AAL2 packet is multiplexed, and detecting a start point of each packet to synchronize the packet; an AAL2 switch for switching the synchronized packet according to routing information provided during call setup; and an AAL2 formatter for multiplexing the switched packet according to ATM connections, and generating an output AAL2 cell having the same format as the input AAL2 cell. Further, the AAL2 processing device comprises a CID changer interconnected between the AAL2 synchronizer and the AAL2 switch, for determining whether there are packets to be switched to the identical ATM connection at the same time out of the packets to be switched by the AAL2 switch by using the cell routing information, and changing, when there are such packets, the CIDs of the packets such that the CIDs of the packets are not identical to each other.

Cette invention se rapporte à un dispositif de traitement AAL2, comprenant un synchroniseur AAL2 destiné à recevoir une cellule AAL2, dans laquelle au moins un paquet AAL2 est multiplexé, et à détecter un point de départ de chaque paquet pour synchroniser le paquet en question; un commutateur AAL2 servant à commuter le paquet synchronisé en fonction des informations de routage fournies pendant l'établissement de l'appel; et un formateur AAL2 servant à multiplexer le paquet commuté en fonction des connexions ATM et à générer une cellule AAL2 de sortie ayant le même format que la cellule AAL2 d'entrée. Ce dispositif de traitement AAL2 comprend en outre un changeur de CID (identification de canal) interconnecté entre le synchroniseur AAL2 et le commutateur AAL2 et servant à déterminer s'il y a des paquets devant être commutés sur la connexion ATM identique au même moment parmi les paquets devant être commutés par le commutateur AAL2, en utilisant les informations de routage de la cellule, et à modifier, le cas échéant, les identifications de canal des paquets, pour que ces identifications de canal CID des paquets ne soient pas identiques entre elles.

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