Disclosed are a method and an apparatus for supporting same, the method carried out by a terminal in a wireless communication system comprising, according to one embodiment of the present disclosure, the steps of: receiving information associated with positioning reference signal (PRS) sequence identifier (ID); receiving a PRS associated with the PRS sequence ID; and decoding a physical downlink shared channel (PDSCH) in at least one resource element (RE) excluding the RE in which the PRS included in a set resource region is received, wherein, on the basis of configuration of discontinuous reception (DRX), the physical downlink control channel (PDCCH) for PDSCH is monitored during the on duration associated with the DRX.