Patent ID: 7450547
Filing Date: 2008-11-11
Classification: H04L,H04W

Abstract:
1. A method of resuming a header decompression operation by means of a user equipment (UE) in a communication system capable of providing a multimedia broadcast/multicast service (MBMS), the method comprising the steps of: detecting movement of the UE receiving the MBMS into a new cell from an old cell; copying and storing old header decompression context information used in the old cell; initializing a dynamic part to decompress headers of packet data for the MBMS and waiting for an Initialization and Refresh Dynamic (IR-DYN) packet until the IR-DYN packet has been received in the UE, in order to update the old header decompression information; creating a new header decompression context through updating the old header decompression information by using the IR-DYN packet when the IR-DYN packet has been received in the UE; and decompressing the headers of the packet data for the MBMS transmitted from the new cell by using the new header decompression context.