Method for reporting channel state information in comp system, and device for same

A terminal reporting channel state information (CSI) in a coordinated multi-point (CoMP) system,

• RF (Radio Frequency) module for transmitting and receiving a radio signal;
• and
• a processor functionally connected to the RF module,
• wherein the processor configured to:
• receive Synchronization Signal Block(SSB) from a first base station and a second base station, respectively;
• receive System Information(SI) from the first base station and the second base station, respectively, based on each the SSB;
• perform Random Access (RA) procedure with the first base station and the second base station;
• receive first configuration information related to a channel state information (CSI) report of a first bandwidth part (BWP) from the first base station and second configuration information related to a CSI report of a second BWP from the second base station,
• wherein the first BWP is composed of a plurality of first subbands including at least one first subband for the CSI report, and
• wherein the second BWP is composed of a plurality of second subbands including at least one second subband for the CSI report;
• based on that the at least one first subband and the at least one second subband partially or entirely overlap, obtain a first CSI for overlapping at least one subband;
• and
• report the first CSI to the first base station and the second base station.