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

1. A method of transmitting channel state information (CSI) in a wireless communication system, the method performed by a terminal comprising:

receiving, from a base station, configuration information related to CSI reporting;

receiving, from the base station, a CSI-reference signal (CSI-RS) on a CSI-RS resource set for channel measurement; and

transmitting, to the base station, CSI generated using the CSI-RS,

wherein the CSI-RS resource set is configured with K (K is a natural number greater than or equal to 2) resources and N (N is a natural number) resource pairs,

wherein the N resource pairs are associated to N CRIs, respectively,

wherein one or more resources in the K resources are associated to one or more CRIs other than the N CRIs, respectively,

wherein unless there is a specific configuration in the configuration information, based on the CSI being derived based on a single resource, only resources that are not referred to in the N resource pairs are associated to the one or more CRIs other than the N CRIs.

2. The method of claim 1 , wherein, based on the specific configuration, the K resources including resources referred to in the N resource pairs are associated to the one or more CRIs other than the N CRIs.

3. The method of claim 1 , further including:

transmitting, to the base station, information on whether to prefer a use of resources included in the N resource pairs to derive the CSI.

4. The method of claim 1 , wherein the CSI-RS received on the K resources is received through a plurality of panels of the terminal.

5. The method of claim 1 , further comprising:

receiving, from the base station, downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH); and

receiving, from the base station, the PDSCH based on the DCI,

wherein, based on the PDSCH is configured with a transmission configuration indication (TCI) state identical to a first TCI state corresponding to the K resources or a quasi co-location (QCL) reference signal identical to the first TCI state, the PDSCH is received through a panel applied when the K resources are received.

6. The method of claim 1 , wherein, based on a control resource set (CORESET) pool index being configured to the terminal, the CSI-RS received on the K CMRs is received through a single panel of the terminal.

7. 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 reporting;

receive, from the base station, a CSI-reference signal (CSI-RS) on a CSI-RS resource set for channel measurement; and

transmit, to the base station, CSI generated using the CSI-RS,

wherein the CSI-RS resource set is configured with measurement (K is a natural number greater than or equal to 2) resources and N (N is a natural number) resource pairs,

wherein the N resource pairs are associated to N CRIs, respectively,

wherein one or more resources in the K resources are associated to one or more CRIs other than the N CRIs, respectively,

wherein unless there is a specific configuration in the configuration information, based on the CSI being derived based on a single resource, only resources that are not referred to in the N resource pairs are associated to the one or more CRIs other than the N CRIs.

8. A base station for receiving channel state information (CSI) in a wireless communication system, the base station 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:

transmit, to a terminal, configuration information related to CSI reporting;

transmit, to the terminal, a CSI-reference signal (CSI-RS) on a CSI-RS resource set for channel measurement; and

receive, from the terminal, CSI generated using the CSI-RS,

wherein the CSI-RS resource set is configured with K (K is a natural number greater than or equal to 2) resources and N (N is a natural number) resource pairs,

wherein the N resource pairs are associated to N CRIs, respectively,

wherein one or more resources in the K resources are associated to one or more CRIs other than the N CRIs, respectively,

wherein unless there is a specific configuration in the configuration information, based on the CSI being derived based on a single resource, only resources that are not referred to in the N resource pairs are associated to the one or more CRIs other than the N CRIs.

9. The base station of claim 8 , wherein, based on the specific configuration, the K resources including resources referred to in the N resource pairs are associated to the one or more CRIs other than the N CRIs.

10. The base station of claim 9 , the at least one processor further configured to:

receive, from the terminal, information on whether to prefer a use of resources included in the N resource pairs to derive the CSI.