Method and device for measuring and reporting channel state in sidelink communication

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

• a transceiver;
• and
• a controller configured to:
• control the transceiver to receive, from a second terminal via a PC5-radio resource control (RRC) signaling, first information on a channel state information-reference signal (CSI-RS) for a sidelink (SL) and second information on a latency bound of a channel state information (CSI) report for the SL,
• control the transceiver to receive, from the second terminal, the CSI-RS for the SL based on the first information,
• control the transceiver to receive, from the second terminal, control information to trigger the CSI report associated with the CSI-RS,
• identify a time at which the triggered CSI report is transmitted, and
• in case that the time does not exceed a valid SL CSI window, control the transceiver to transmit, to the second terminal, the triggered CSI report, and
• in case that the time exceeds the valid SL CSI window, cancel the triggered CSI report,
• wherein the valid SL CSI window is determined based on the latency bound which is configured by the PC5-RRC signaling.