Method for reporting channel state information in wireless communication system and apparatus therefor

A user equipment in a wireless communication system supporting a Coordinated Multi Point (CoMP) transmission, the user equipment comprising:

• a reception module configured to receive a reference signal (RS) from a serving cell and at least one cooperative cell;
• a processor configured to generate channel state information (CSI) for the CoMP transmission based on the RS;
• and
• a transmission module configured to transmit the CSI to the serving cell on a Physical Uplink Shared Channel (PUSCH),
• wherein the CSI includes a Channel Quality Indicator (CQI) information and a Precoding Matrix Index (PMI) information,
• wherein the CQI information includes a wideband CQI and a CQI for each of subband selected for the CoMP transmission,
• wherein the PMI information includes a wideband PMI and a PMI for each of the selected subband, and
• wherein the CSI includes information to compensate a relative phase difference and a relative amplitude difference between a downlink signal transmitted from the at least one cooperative cell and a downlink signal transmitted from the serving cell.