Patent ID: 7899025

Claim:
A method utilized in wireless network, comprising: receiving, by a decompressor, context information including an initial real-time protocol (RTP) sequence number; determining, at the decompressor, a relationship between radio link protocol (RLP) sequence numbers in received RLP packets and the RTP sequence numbers of RTP packets represented by the received RLP packets, wherein the determining of said relationship includes using a mapping table that maps the RLP sequence numbers to the RTP sequence numbers, where the mapping table is initially based on the context information; receiving, by the decompressor, compressed RTP packets; determining, at the decompressor, a RTP sequence number associated with the compressed RTP packets based on the determined relationship and at least one of the RLP sequence numbers of the received RLP packet or packets, the received RLP packet or packets including the compressed RTP packets, the compressed RTP packets not including a RTP sequence number; and adding, at the decompressor, the determined RTP sequence number to the mapping table to determine a future relationship between the RLP sequence numbers and the RTP sequence numbers to update the context information.