Patent ID: 7266118
Filing Date: 2007-09-04
Classification: H04L

Abstract:
1. A packet receiving apparatus comprising: a receiver operable to receive a packet having either a compressed header or a non-compressed header; a header decompressing section operable to regenerate a non-compressed header for a packet received with a compressed header; a buffer operable to store non-compressed header information of a correctly and previously received packet; an error detector operable to detect a presence of an error in a packet: (i) received with a non-compressed header, (ii) having a regenerated non-compressed header, or (iii) having a replacement non-compressed header; a header replacement section operable to replace part of a non-compressed header with non-compressed header information stored in the buffer when an error is detected in a packet so as to produce a replacement non-compressed header; and an updating section operable to update the non-compressed header information stored in the buffer with header information from a packet that has no errors detected therein; wherein the error detecting unit outputs a packet as a correctly received packet when no error is detected in the packet.