According to one embodiment of the present invention, a method by which a wireless communication apparatus receives a signal comprises: monitoring control channel candidates in a bandwidth part (BWP) comprising one or more sub-bands (SBs), on the basis of a control channel search-space set (SS) configuration and a control resource set (CORSET) configuration that are associated with each other; and obtaining control information from the control channel detected as the result of monitoring the candidates, wherein, in monitoring of the candidates, the wireless communication apparatus sets the CORESET frequency resource region of each SB in the BWP on the basis of the CORESET frequency resource region of a specific SB in the BWP, and the specific SB can be restricted to one SB located in the lowest frequency, from among the one or more SBs included in the BWP.