Method and apparatus for transmitting and receiving channel state information in wireless communication system

A terminal of transmitting channel state information (CSI) in a wireless communication system, the terminal comprising:

• at least one transceiver for transmitting and receiving a wireless signal;
• and
• at least one processor for controlling the at least one transceiver,
• wherein the at least one processor configured to:
• receive configuration information related to the CSI from a base station, wherein the configuration information includes information on a CSI-RS resource set;
• receive a CSI-reference signal (CSI-RS) from the base station;
• and
• transmit the CSI to the base station based on the configuration information and the CSI-RS,
• wherein the CSI-RS resource set includes M (M is a natural number) CSI-RS resource groups,
• wherein the CSI includes N first CSI sets generated based on a single CSI-RS resource in N different (N≤M, N is a natural number) CSI-RS resource groups among the M CSI-RS resource groups.

At least one non-transitory computer-readable medium storing at least one instruction, wherein the at least one instruction executable by at least one processor controls a device to:

• receive configuration information related to the CSI from a base station, wherein the configuration information includes information on a CSI-RS resource set;
• receive a CSI-reference signal (CSI-RS) from the base station;
• and
• transmit the CSI to the base station based on the configuration information and the CSI-RS,
• wherein the CSI-RS resource set includes M (M is a natural number) CSI-RS resource groups,
• wherein the CSI includes N first CSI sets generated based on a single CSI-RS resource in N different (N≤M, N is a natural number) CSI-RS resource groups among the M CSI-RS resource groups.