Method for reporting channel state information in wireless communication system, and apparatus therefor

A user equipment (UE) for reporting channel state information (CSI) in a wireless communication system, the UE comprising:

• a transceiver configured to transmit and receive a signal to and from a base station (BS);
• and
• a processor connected to the transceiver, the processor configured to:
• control the transceiver to receive first information related to a slot N for CSI reporting;
• control the transceiver to receive second information related to CSI-Reference Resource (CSI-RS) within at least one slot;
• determine a slot N−k among the at least one slot as a reference resource,
• wherein the slot N−k includes a plurality of mini-slot sets including a plurality of mini-slots;
• and
• control the transceiver to report, to the BS, all CSIs for the plurality of mini-slot sets via a slot N, wherein the CSIs are measured based on CSI-RS within the reference resource,
• wherein each of the CSIs comprises an index of a mini-slot set corresponding to the CSI, and
• wherein k and N each is an integer.