Method for data channel rate matching according to aperiodic CSI-RS in wireless communication system, and device therefor

A user equipment (UE) in a wireless communication system, comprising:

• a wireless communication module;
• and
• a processor connected to the wireless communication module,
• wherein the processor is configured to:
• receive resource configuration information for at least one aperiodic Channel Status Information-Reference Signal (C SI-RS) through a higher layer,
• receive resource configuration information for at least one periodic CSI-RS through the higher layer,
• receive a common control channel including rate matching information about a UE-specific control channel, and
• receive, from a base station, the UE-specific control channel including a triggering message of CSI reporting based on the at least one aperiodic CSI-RS along with the at least one aperiodic CSI-RS using the rate matching information, on an assumption that the UE-specific control channel is not mapped to an union of resources for the at least one aperiodic CSI-RS and resources for the at least one periodic CSI-RS.