A disclosure of the present specification provides a method for performing measurement on a physical sidelink discovery channel (PSDCH) including a discovery signal from an adjacent terminal. The method may comprise the steps of: when, among PSDCHs repeatedly transmitted from an adjacent terminal in n subframes, a PSDCH in a kth subframe is successfully decoded and thereby the cyclic redundancy check (CRC) thereof succeeds, regarding the CRC of PSDCHs in the subsequent n−k subframes as successful without decoding the same; and performing measurements in the kth subframe and the subsequent n−k subframes for which the CRC is regarded as successful.