A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a base station, at least one measurement gap configuration; triggering a first uplink (UL) medium access control (MAC) control element (CE) for requesting an activation or deactivation of a first measurement gap; identifying an event associated with the first measurement gap; cancelling the triggered first UL MAC CE based on the event; and triggering a second UL MAC CE for requesting an activation or deactivation of a second measurement gap.