Method and device for performing location measurement on basis of PDOA

A user equipment (UE) configured to perform location measurement based on phase difference of arrival (PDOA) in a wireless communication system, the UE comprising:

• a receiver configured to receive a signal;
• a transmitter configured to transmit a signal;
• and
• a processor configured to control the receiver and the transmitter,
• wherein the processor is further configured to:
• receive, through the receiver, signals through multiple paths from a base station (BS),
• acquire phase difference information about each of the multiple paths, and
• report, to the BS through the transmitter, at least part of the phase difference information based on reference signals,
• wherein the at least part of the phase difference information that is reported to the BS only relates to signals having a strength that is greater than or equal to a threshold, among the signals that are received through the multiple paths, and
• wherein, based on a number of the reference signals being fewer than a number of the signals having the strength that is greater than or equal to the threshold, the at least part of the phase difference information related to the number of the reference signals is reported to the BS in an order of signals having a smaller phase difference.