HYBRID ARQ METHOD FOR PACKET DATA TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To reduce the communication overhead of a hybrid ARQ method for packet data transmission and to eliminate complexity of mounting. SOLUTION: A packet, which has already been sent, is coupled with a packet which has been re-sent. Each packet is segmented into protocol data units(PDU), each of which is given a sequence number for specification. The sequence number is transmitted over a control channel independent of the data channel for the transmission of the PDUs.