COMMUNICATION SYSTEM FOR REMOVING TRANSMISSION OVERHEAD

摘要

The invention relates to a technology for decreasing or eliminating communication overhead in a communication system for communicating packet data. A gateway compresses IP header (331 ), UDP/Real-time, and Transport Protocol (RTP) header and associates with the data to transmit the data to a base station. The base station compresses the GTP related header (320) using a RObust Header Compression (ROHC) scheme. UDP/RTP header (332) is integrated with the plurality of data packets, generates SCTP header. The base station generates header decompression information, and inserts it into a Packet Data Convergence Protocol (PDCP) of the LTE L2 header (310) as a header compression (HC) header (335). The relay receives the data from the base station using the Layer (Ll) and the Layer (L2) of a 3GPP LTE protocol. The base station transmits, via the relay, the header decompression information to a terminal accessing the relay, and the terminal can decompress the compressed GTP header (323) using the header decompression information.