Method and apparatus for measuring and reporting channel state in wireless communication system

A method performed by a base station in a wireless communication system, the method comprising:

• transmitting, to a terminal, information configuring a list of aperiodic trigger states for channel state information (CSI);
• and
• transmitting, to the terminal, downlink control information (DCI) including a CSI request field,
• wherein a codepoint of the CSI request field is associated with one trigger state of the list, wherein the one trigger state comprises at least one CSI report configuration, a CSI report configuration comprises a CSI resource configuration, and the CSI resource configuration comprises a bandwidth part (BWP) identifier (ID), and
• wherein in case that a CSI report for a non-active BWP is triggered based on the CSI request field, a measurement based on a CSI resource in the non-active BWP is not performed.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a processor configured to:
• receive, from a base station, information configuring a list of aperiodic trigger states for channel state information (CSI), and
• receive, from the base station, downlink control information (DCI) including a CSI request field, wherein a codepoint of the CSI request field is associated with one trigger state of the list, and wherein the one trigger state comprises at least one CSI report configuration, a CSI report configuration comprises a CSI resource configuration, and the CSI resource configuration comprises a bandwidth part (BWP) identifier (ID),
• wherein in case that a CSI report for a non-active BWP is triggered based on the CSI request field, a measurement based on a CSI resource in the non-active BWP is not performed.

A base station in a wireless communication system, the base station comprising:

• a transceiver;
• and
• a processor configured to:
• transmit, to a terminal, information configuring a list of aperiodic trigger states for channel state information (CSI), and
• transmit, to the terminal, downlink control information (DCI) including a CSI request field,
• wherein a codepoint of the CSI request field is associated with one trigger state of the list, wherein the one trigger state comprises at least one CSI report configuration, a CSI report configuration comprises a CSI resource configuration, and the CSI resource configuration comprises a bandwidth part (BWP) identifier (ID), and
• wherein in case that a CSI report for a non-active BWP is triggered based on the CSI request field, a measurement based on a CSI resource in the non-active BWP is not performed.