Patent ID: 6697987
Filing Date: 2004-02-24
Classification: H04L

Abstract:
A method of transmitting packet data to a receiver in a communication system using a Hybrid ARQ technique, the method comprising the steps of:(a) transmitting a first packet encoded with a first code rate to a receiver; (b) decoding said first packet in said receiver if a buffer used in said receiver is empty; (c) comparing an index representative of how much said first packet is damaged to a predetermined threshold value if a first error is occurred during the step (b); (d) storing said first packet in said buffer and requesting to transmit a second additional packet encoded with a second code rate if said index is greater than or equal to said threshold value, said second code rate being lower than said first code rate; and (e) requesting to re-transmit said first packet if said index is less than said threshold value.