Patent ID: 6529561
Filing Date: 2003-03-04
Classification: H04L

Abstract:
A method of transmitting data in a radio system from a transmitter to a receiver, the method comprising:channel coding a data block into a coded data block by using a selected channel coding; puncturing the coded data block by using a first puncturing pattern; transmitting the coded data block punctured by the first puncturing pattern to the receiver; detecting a need for retransmission of the received coded data block; transmitting a retransmission request of the coded data block to the transmitter; increasing the code rate of the coded data block to be retransmitted by puncturing the coded data block coded by the channel coding of the original transmission using a second puncturing pattern including fewer symbols to be transmitted than the first puncturing pattern; transmitting the coded data block punctured by the second puncturing pattern to the receiver; combining the received coded data block punctured by the first puncturing pattern and the received coded data block punctured by the second puncturing pattern; and decoding the channel coding of the combined coded data block.