SYSTEM FOR MULTICAST BROADCASTING TOWARDS AT LEAST ONE ROAMING USER TERMINAL IN A MOBILE IP NETWORK

A system for multicast broadcasting towards an IP network mobile system. Upon connection of the mobile router and transmission of a signalling to the site of origin, the method includes discriminating the location of a mobile router with regard to the respective site of the organization of origin; transmitting to an infinity of locations; then for each assess request of a mobile terminal, local multicast broadcasting; substituting the access request, if the location information designates a connection of outside the respective site thereof coming from the organization of origin, with a request for access to extend multicast broadcasting; transmitting the request for access to extend multicast broadcasting; receiving and transforming, at level, the extended multicast broadcast into local transformed multicast broadcast and transmitting the locally transformed multicast broadcast on the IP mobile network to the requesting user terminal.