A user equipment (UE) communicates with a base station operating in a sub-band frequency division duplexing (FDD) mode. The UE receives a downlink transmission in a usable bandwidth (BW) of an active downlink bandwidth part (BWP) in a sub-band full duplex (SBFD) slot, where the usable BW does not include frequency resources used for guard band and uplink transmission. The UE monitors for one or more control resource set (CORESET) configured by the base station within the active downlink BWP during monitoring occasions.