Patent ID: 8098618

Claim:
A method for performing a multicast transmission of multicast data streams of multicast groups in a telecommunication network having at least one router and at least one serving node handling at least one user and providing a protocol stack having an application IP layer used for performing said multicast transmission of multicast data in at least one multicast group wherein said application IP layer is located above a point-to-point-layer, wherein said method includes the following steps a pre-configured transport level multicast group tunnel is pre-established by means of transport layer protocol for tunnelling on the transport layer, located below the point-to-point layer, providing a point-to-multipoint connection and said tunnel is assigned to the multicast group between the router and the serving node redirecting the multicast transmission from the application IP layer to the transport layer, the router is adapted to multiplex the multiple multicast data streams matching with the pre-configuration onto the pre-configured transport level multicast group tunnel, and transmission of multicast data is routed over the pre-configured transport level multicast group tunnel from the router to the at least one serving node and, the serving node is adapted to de-multiplex multicast data streams received on the pre-configured transport level multicast group tunnel and, transmission of multicast data streams is performed from the serving node to the at least one user registered to the multicast group.