A method of wireless communication includes performing, by a user equipment (UE), a scan in connection with a listen-before-transmit (LBT) operation. A sensing bandwidth associated with the scan is selected by the UE based at least in part on a transmission bandwidth of an uplink transmission, and at least a portion of the sensing bandwidth is included an unlicensed frequency spectrum. The method further includes transmitting, by the UE, the uplink transmission based on a result of the scan.