A method by which a terminal receives a downlink signal in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving information on a payload size of a group common-physical control channel (GC-PDCCH), which should be monitored by the terminal, and information on a control channel element (CCE) aggregation level of the GC-PDCCH, which should be monitored by the terminal; monitoring the GC-PDCCH in a control resource set (CORESET) on the basis of the information on the payload size of the GC-PDCCH and the information on the CCE aggregation level of the GC-PDCCH; and obtaining a slot format indication (SFI) through the GC-PDCCH. The terminal is capable of communicating with at least one of another terminal, a terminal related to an autonomous driving vehicle, a base station or a network.