Patent ID: 8605643
Filing Date: 2013-12-10
Classification: H04B,H04L

Abstract:
1. A method for performing Automatic Retransmission reQuest (ARQ) in a Relay Station (RS) of a wireless communication system, the method comprising: receiving data from a Base Station (BS); transmitting data to at least one lower node, wherein the lower node includes at least one of a lower RS and a Mobile Station (MS); if Negative ACKnowledgement (NACK) information of a relay link is received from the lower RS, transmitting the NACK information to the BS; receiving, by the RS, data retransmitted from the BS; and transmitting, by the RS, the data retransmitted from the BS to the lower RS, wherein if NACK information of an access link is received from the MS which is accessed directly with the RS, retransmitting data to the MS in response to the NACK information of the access link.