Patent ID: 7525947
Filing Date: 2009-04-28
Classification: H04L,H04W

Abstract:
1. A method of multicast tunneling service on a mobile IP network; comprising: receiving a multicast packet from a source to be sent to a plurality of mobile terminals, wherein the plurality of mobile terminals include at least one of a first mobile group using a co-located care of address (CL COA) and a second mobile group using a foreign agent COA, and wherein terminals of the first mobile group are in data communication with a home agent and terminals of the second mobile group are in data communication with a foreign agent; modifying, at the home agent, the received multicast packet such that the modified multicast packet is transmitted to the at least one of the first and second mobile groups; transmitting the modified multicast packet to a transit node; duplicating, at the transit node and/or the foreign agent, the modified multicast packet as many times as the number of the first mobile group terminals and/or the number of the second mobile group terminals, respectively; and transmitting each of the duplicated multicast packets to a respective mobile terminal.