METHOD FOR AVOIDING INTER-CELL INTERFERENCE IN WIRELESS ACCESS SYSTEM

摘要

According to the disclosure of the present invention, provided is a method for operating a relay node (RN) to avoid an inter-cell interference (ICI) in a wireless access system. The method includes: overhearing the downlink signal transmitted by a plurality of base stations to terminals within the coverage area of each base station in an nth subframe; decoding the overheard downlink signal from an n+1th subframe to an n+3th subframe and sharing the RN through the plurality of base stations; overhearing the reply to the downlink signal transmitted by the terminals to each base station in an n+4th subframe; reallocating a resource block allocated to the terminals in the nth subframe if there is at least one negative reply NACK in the replies to the downlink signal transmitted by the terminals, wherein the reply is a positive reply ACK or a negative reply NACK; transmitting control information representing the reallocated resource block to each base station; and retransmitting, in an n+8th subframe, the downlink signal transmitted to the terminals in the nth subframe, in accordance with the control information.