A method of receiving a physical downlink shared channel (PDSCH) by a user equipment (UE) in a wireless communication system. The method includes receiving a physical downlink control channel (PDCCH) through control resource set (CORESET) #0, receiving a physical downlink shared channel (PDSCH) scheduled based on the PDCCH and a demodulation reference signal (DMRS) for the PDSCH, receiving information about at least one discontinuous reception (DRX) timer for configuring a DRX operation, and receiving downlink control information (DCI) during an On-duration based on the at least one DRX timer, when the PDCCH is addressed to a system information-radio network temporary identifier (SI-RNTI), a reference point for the DMRS may be subcarrier #0 of a lowest-numbered resource block (RB) among RBs included in the CORESET #0.