A method performed by a terminal in a wireless communication system, the method comprising: receiving (2d-11), from a base station (2d-03), a radio resource control, RRC, message including first measurement gap configuration information related to a first measurement gap (2d-21, 2d-23, 2d-25, 2d-27) associated with a first frequency range; receiving (2d-31), from the base station (2d-03), an RRC message including second measurement gap configuration information related to a second measurement gap (2d-41, 2d-43) associated with a second frequency range, wherein the first frequency range corresponds to frequencies below 6GHz and the second frequency range corresponds to frequencies above 6 GHz; and based on receiving the RRC message including the second measurement gap configuration information related to the second measurement gap associated with the second frequency range, performing, on a cell associated with the first frequency range, data transmission or data reception, and not performing, on a cell associated with the second frequency range, a transmission of a hybrid automatic repeat request, HARQ, feedback, a scheduling request, SR, or channel state information, CSI, during the second measurement gap, wherein during the first measurement gap, a transmission of the HARQ feedback or the CSI is not performed on the cell associated with the first frequency range, and wherein the terminal is in an evolved universal terrestrial radio access - new radio dual connectivity, EN-DC, mode. receiving (2d-11), from a base station (2d-03), a radio resource control, RRC, message including first measurement gap configuration information related to a first measurement gap (2d-21, 2d-23, 2d-25, 2d-27) associated with a first frequency range; receiving (2d-31), from the base station (2d-03), an RRC message including second measurement gap configuration information related to a second measurement gap (2d-41, 2d-43) associated with a second frequency range, wherein the first frequency range corresponds to frequencies below 6GHz and the second frequency range corresponds to frequencies above 6 GHz; and based on receiving the RRC message including the second measurement gap configuration information related to the second measurement gap associated with the second frequency range, performing, on a cell associated with the first frequency range, data transmission or data reception, and not performing, on a cell associated with the second frequency range, a transmission of a hybrid automatic repeat request, HARQ, feedback, a scheduling request, SR, or channel state information, CSI, during the second measurement gap, performing, on a cell associated with the first frequency range, data transmission or data reception, and not performing, on a cell associated with the second frequency range, a transmission of a hybrid automatic repeat request, HARQ, feedback, a scheduling request, SR, or channel state information, CSI, during the second measurement gap, wherein during the first measurement gap, a transmission of the HARQ feedback or the CSI is not performed on the cell associated with the first frequency range, and wherein the terminal is in an evolved universal terrestrial radio access - new radio dual connectivity, EN-DC, mode.