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

A terminal for 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, from a base station, configuration information related to CSI;
• receive, from the base station, a CSI-reference signal (CSI-RS) on a plurality of CSI-RS resources;
• and
• transmit, to the base station, first CSI based on the configuration information,
• wherein the plurality of CSI-RS resources corresponding to the configuration information are configured with one or more channel measurement resources (CMRs) and one or more CMR pairs,
• wherein the one or more CMRs are configured to be used to derive CSI based on a single CMR,
• wherein the one or more CMR pairs are configured to be used to derive CSI based on a single CMR pair,
• wherein unless there is a specific configuration by the configuration information, based on the first CSI being CSI derived based on a single CMR, any CMR included in the one or more CMR pairs are not used to derive the first CSI.

A method of receiving channel state information (CSI) in a wireless communication system, the method performed by a base station comprising:

• transmitting, to a terminal, configuration information related to CSI;
• transmitting, to the terminal, a CSI-reference signal (CSI-RS) on a plurality of CSI-RS resources;
• and
• receiving, from the terminal, first CSI based on the configuration information,
• wherein the plurality of CSI-RS resources corresponding to the configuration information are configured with one or more channel measurement resources (CMRs) and one or more CMR pairs,
• wherein the one or more CMRs are configured to be used to derive CSI based on a single CMR,
• wherein the one or more CMR pairs are configured to be used to derive CSI based on a single CMR pair,
• wherein unless there is a specific configuration by the configuration information, based on the first CSI being CSI derived based on a single CMR, any CMR included in the one or more CMR pairs are not used to derive the first CSI.