Patent ID: 7236740

Claim:
A method for retransmitting data in a mobile communication system, comprising the steps of: determining whether an initial data block received from a transmitter has an error; estimating a current channel state and determining a retransmission frequency according to the estimated current channel state upon detecting an error in the initial data block; transmitting a retransmission request message of the initial data block together with the determined retransmission frequency to the transmitter; receiving data blocks retransmitted by the transmitter as many times as the retransmission frequency in response to the retransmission request message; determining whether the retransmitted data blocks have errors; and providing the received data blocks to an upper layer upon failure to detect errors from the received data blocks; measuring an average received power level of the initial data block and each of the received data blocks, and selectively combining only the data blocks having an average power level higher than or equal to a predetermined reference power level upon failure to detect errors.