In some designs, UE receives an active BWP SCS value of an active BWP SCS that is 120 kHz or higher, and a reference SCS value of a reference SCS that is the same or lower than the active BWP SCS, and determines a number of consecutive slots in the active BWP associated with the same SFI based on the active BWP SCS value and the reference SCS value. UE and BS communicate on slot(s) of the active BWP based on the active BWP SCS value and the reference SCS value. In some designs, a multi-slot SFI configuration is defined for multiple SFIs.