The present invention relates to a wireless communication system. A method by which a terminal measures the interference of a neighboring base station in a wireless communication system, according to one embodiment of the present invention, can comprise the steps of: determining a first resource group and a second resource group, which respectively include resource elements of X number of zero-power channel state information reference signals (CSI-RS) for measuring interference; respectively selecting T (Y≦X) number of resource elements in the first resource group and the second resource group; and measuring the interference of a neighboring base station on the basis of the locations of the selected 2Y number of resource elements.