Route-optimised multicast traffic for a mobile network node

H - Electricity – 04 – J

Patent

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Details

H04J 3/16 (2006.01)

Patent

CA 2547946

A method of communicating traffic from a source to a group (G) of nodes including a Network Node (MNN) in a network using one or more multicast protocols. The network also comprises a Router (MR) for forwarding traffic between the network and the Internet and a Multicast Signalling Gateway (MSG) co-located with the Router (MR) and translating on an interface signalling messages of a multicast routing protocol (MRP) into messages of a group membership protocol (GMP). In the case of mobile networks, the interface is preferably an egress interface of the Mobile Router (MR). The Multicast Signalling Gateway (MSG) preferably translates multicast packets together with unicast source addresses and multicast destination addresses of multicast packets between IPv4 and IPv6 protocols.

L'invention concerne un procédé de communication de trafic entre une source et un groupe (G) de noeuds, y compris un noeud de réseau (MNN) dans un réseau, au moyen d'un ou plusieurs protocoles de multidiffusion. Le réseau comprend également un routeur (MR) destiné à réacheminer le trafic entre le réseau et l'internet, ainsi qu'une passerelle de signalisation multidiffusion (MSG) située au même endroit que le routeur (MR) et traduisant sur une interface des messages de signalisation d'un protocole de routage multidiffusion (MRP) en messages d'un protocole d'appartenance à un groupe (GMP). Dans le cas de réseaux mobiles, l'interface est de préférence une interface de sortie du routeur mobile (MR). La passerelle de signalisation multidiffusion (MSG) traduit de préférence des paquets de multidiffusion conjointement avec des adresses de source d'unidiffusion et des adresses de destination de multidiffusion de paquets de multidiffusion entre des protocoles IPv4 et IPv6.

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