Patent ID: 7447968

Claim:
An automatic repeat request, ARQ, method for generating an encoder packet by receiving control information including a subpacket identifier, SP_ID, representing the sequence of a subpacket, a size of an encoder packet EP_SIZE, and a sequence identifier, AI_SN, that is toggled each time a new encoder packet is transmitted, while receiving one of a plurality of subpackets generated by segmenting a bit steam acquired by encoding a transmission encoder packet, in a wireless packet data communication system, the method comprising: generating the encoder packet by performing a decoding process caused by initial transmission on the received subpacket, if the AI_SN and the EP_SIZE are both not identical to previously received AI_SN and EP_SIZE; generating the encoder packet by performing the decoding process caused by retransmission on the received subpacket, if the AI_SN and the EP_SIZE are both identical to previously received AI_SN and EP_SIZE and ACK is not transmitted in response to a previously received subpacket.