Patent ID: 7920579
Filing Date: 2011-04-05
Classification: H04L

Abstract:
1. A method for a Media Gateway (MG) to receive multicast data, comprising: receiving a multicast-related indication signal from a Media Gateway Controller (MGC), the multicast-related indication signal comprising multicast group membership information of a user, the multicast group membership information comprising an address of a multicast group; reporting the multicast group membership information to a router in a network at a multicast source side and requesting to join the multicast group; and receiving the multicast data of the multicast group from the multicast source side after the MG is added as a member of the multicast group, wherein the multicast-related indication signal sent by the MGC is in response to a request by the user to join the multicast group, and wherein the multicast-related indication signal is included in a package extended in H.248 protocol; wherein the method further comprises: receiving a multicast membership query message from the router in the network at the multicast source side; reporting a query in a multicast query event message to the MGC; receiving complete multicast group membership information of the user or a modification part of the multicast group membership information of the user from the MGC in response to the multicast query event message; and returning the complete multicast group membership information of the user or the modification part of the multicast group membership information of the user to the router as current multicast policy information in response to the multicast membership query message.