Method for transmitting or receiving channel state information-reference signal in unlicensed band, and device therefor

A user equipment (UE) for receiving a Channel State Information-Reference Signal (CSI-RS) in an unlicensed band, the UE comprising:

• at least one transceiver;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
• monitoring a Physical Downlink Control Channel (PDCCH) for scheduling a Physical Downlink Shared Channel (PDSCH);
• and
• based on a Group Common-PDCCH (GC-PDCCH) not being configured to the UE and based on the PDCCH being detected, receiving, via the at least one transceiver, the CSI-RS in symbols to which the PDSCH is scheduled.

An apparatus for receiving a Channel State Information-Reference Signal (CSI-RS) in an unlicensed band, the apparatus comprising:

• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
• monitoring a Physical Downlink Control Channel (PDCCH) for scheduling a Physical Downlink Shared Channel (PDSCH);
• and
• based on a Group Common-PDCCH (GC-PDCCH) not being configured to the UE and based on the PDCCH being detected, receiving the CSI-RS in symbols to which the PDSCH is scheduled.