TRANSCEIVER APPARATUS AND METHOD FOR EFFICIENT RETRANSMISSION OF HIGH-SPEED PACKET DATA

摘要

PROBLEM TO BE SOLVED: To provide a method for retransmitting coded bits by a transmitter in response to a retransmission request from a receiver in a mobile communication system.

SOLUTION: The method comprises the steps of: determining a modulation technique to be used at retransmission as a modulation technique having a lower modulation order than a modulation technique used at initial transmission; determining a puncturing pattern in accordance with a retransmission method, and selecting as many coded bits as the number of coded bits that can be symbol-mapped by the modulation technique selected among transmission coded bits punctured by the determined puncturing pattern; and symbol-mapping the selected coded bits by the determined modulation technique, and a transmitting the symbol-mapped coded bits to the receiver.

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