Patent ID: 7885219
Filing Date: 2011-02-08
Classification: H04L,H04W

Abstract:
1. A method for changing the path for receiving a multicast service by a mobile communication device from a first communication node to a second communication node, the method comprising the steps of: transmitting a Routing Area Update Request by the mobile communication device to the second communication node; transmitting a Context Request by the second communication node to the first communication node; transmitting a Context Response by the first communication node to the second communication node, said Context Response comprising the context for said multicast service; transmitting a Context Acknowledgement by the second communication node to the first communication node to indicate that the second communication node has control over the mobile communication device; checking, by the second communication node, whether it has stored a multicast Packet Data Protocol (PDP) (MC-PDP) context for said multicast service that is indicated in the Context Response; and if not, creating by the second communication node a new MC-PDP context for said multicast service and entering said multicast service on a backbone network.