According to at least one of the embodiments disclosed in the present specification, a terminal may receive tracking reference signal (TRS) configuration information related to a radio resource control (RRC) idle/inactive state, receive physical downlink shared channel (PDSCH) scheduling information in the RRC idle/inactive state, determine PDSCH resource mapping on the basis of the PDSCH scheduling information, and receive PDSCH and TRS in the RRC idle/inactive state on the basis of the determined PDSCH resource mapping and the TRS configuration information.