A reference signal measurement method for determining a location in a wireless communication system, according to an embodiment of the present invention, is performed by means of a terminal. The method comprises the steps of: the terminal transmitting to a location server a report which relates to the capability for measuring a precoded reference signal (RS) for determining a vertical location; receiving, from the location server, configuration information for measuring the precoded RS; and measuring the precoded RS with respect to the configuration information and reporting the result thereof to the location server, wherein the configuration information can comprise a frequency or time domain for measuring the precoded RS by the terminal, a base station transmitting the precoded RS that is to be reported by the terminal, or information about the precoded RS that is to be reported by the terminal.