Method and device for avoiding inter-cell interference in a wireless access system

A Relay Node (RN) for reallocating resources in order to avoid Inter-Cell Interference (ICI) in a wireless access system communicating by using a radio frame including a first time zone and a second time zone, the RN comprising:

• a radio frequency (RF) communication unit for transmitting and receiving radio signals;
• and
• a processor, operatively coupled with the RF communication unit, configured to:
• in the first time zone, overhear a control channel comprising downlink or uplink resource allocation information transmitted from each of a plurality of eNBs to user equipments (UEs) within a coverage of each of the plurality of eNBs, wherein the plurality of eNBs shares the RN,
• in the second time zone, check whether or not a colliding resource region is present by comparing resource regions, allocated to UEs within a coverage of the RN, with each other through the control channel,
• in the second time zone, if the colliding resource region is present, transmit, to the plurality of eNBs, information on first identifications of the UEs within the coverage of the RN and second identifications of UEs using the colliding resource region,
• in the second time zone, if the colliding resource region is present, exchange the colliding resource region with resource regions allocated to UEs outside the coverage of the RN by using the first identifications and the second identifications, wherein the exchanged resource regions do not include the resource regions allocated to the UEs within the coverage of the RN, and
• in the second time zone, transmit data to the UEs through the exchanged resource region,
• wherein the first time zone comprises downlink and uplink regions, and
• wherein the second time zone comprises downlink and uplink regions.