Method and device for inter cell interference coordination in wireless communication system

A method for receiving, by a second cell, subframe pattern information on a first cell, the method comprising:

• receiving, from the first cell, downlink almost blank subframe (ABS) pattern information of the first cell;
• receiving, from the first cell, Tx power information of a downlink ABS,
• wherein the downlink ABS pattern information explicitly indicates whether an ABS in a downlink ABS pattern corresponds to a zero power-ABS (z-ABS) or a reduced power-ABS (r-ABS), and
• wherein an uplink ABS pattern on the first cell is implicitly indicated based on whether the ABS in the downlink ABS pattern corresponds to the z-ABS or the r-ABS.

An eNB of a second cell for receiving subframe pattern information on a first cell, the eNB comprising:

• a receiver configured to receive a signal from the first cell;
• and
• a processor for controlling the eNB,
• wherein the processor is configured to:
• receive, from the first cell, downlink almost blank subframe (ABS) pattern information of the first cell, and
• receive, from the first cell, uplink ABS pattern information of the first cell,
• wherein the downlink ABS pattern information does not explicitly indicate whether an ABS in a downlink ABS pattern corresponds to a zero power-ABS (z-ABS) or a reduced power-ABS (r-ABS), and
• wherein whether the ABS in the downlink ABS pattern corresponds to the z-ABS or r-ABS is implicitly indicated by a combination of the downlink ABS pattern information and the uplink ABS pattern information.

An eNB of a second cell for receiving subframe pattern information on a first cell, the eNB comprising:

• a receiver configured to receive a signal from the first cell;
• and
• a processor for controlling the eNB,
• wherein the processor is configured to:
• receive, from the first cell, downlink almost blank subframe (ABS) pattern information of the first cell, and
• receive, from the first cell, Tx power information on a downlink ABS of the first cell,
• wherein the downlink ABS pattern information explicitly indicates whether an ABS in a downlink ABS pattern corresponds to a zero power-ABS (z-ABS) or a reduced power-ABS (r-ABS), and
• wherein an uplink ABS pattern on the first cell is implicitly indicated based on whether the ABS in the downlink ABS pattern corresponds to the z-ABS or the r-ABS.