Patent ID: 8599878

Claim:
A header compression method for use in a wireless communication apparatus, the wireless communication apparatus comprising a processing unit and a transceiver, the header compression method comprising the steps of: (a) enabling the transceiver to establish a tunnel for a user equipment; (b) enabling the processing unit to receive a first packet, the first packet comprises a compressed inner header set and a payload; (c) enabling the processing unit to decompress the compressed inner header set in the first packet; (d) enabling the processing unit to generate a second packet comprising an outer header set, the first packet, the outer header set being related to the wireless communication apparatus; (e) enabling the processing unit to replace the outer header set of the second packet with a replaced header, the replaced header being shorter than the outer header set, recording an identity corresponding to a data flow of the user equipment and a length of the replaced header, and being generated by ignoring fields in the outer header set obtained once the tunnel is established or inferred once a compressed packet is received; (f) enabling the processing unit to skip the replaced header of the second packet according to the length of the replaced header; (g) enabling the processing unit to compress the inner header set of the second packet; and (h) enabling the transceiver to transmit the second packet by the tunnel according to the identity recorded in the replaced header.