A user equipment, UE, in a wireless communication system, the UE comprising: a transceiver; one or more processors including processing circuitry; and memory storing instructions that, when executed by the one or more processors individually or collectively, cause the UE to: emulate a first event of a set of events related to a set of cells including a serving cell and a neighbor cell in case that the UE is in a radio resource control, RRC, connected state and the first event is triggered in the UE, determine an emulated first channel load metric of a set of emulated channel load metrics related to the emulated first event, the emulated first channel load metric including a reference signal received power, RSRP, for a cell reselection from the serving cell to the neighbor cell, determine an actual first channel load metric of the set of the emulated channel load metrics related to the emulated first event, the actual first channel load metric including a RSRP for a handover from the serving cell to the neighbor cell, identify a difference between the emulated first channel load metric and the actual first channel load metric, and report, to a base station, information about the identified difference between the emulated first channel load metric and the actual first channel load metric, receive, from the base station, an update parameter for the cell reselection or the handover of the UE, based on the reported information, wherein the emulated first event comprises the cell reselection of the UE from the first cell to the second cell. one or more processors including processing circuitry; and memory storing instructions that, when executed by the one or more processors individually or collectively, cause the UE to: emulate a first event of a set of events related to a set of cells including a serving cell and a neighbor cell in case that the UE is in a radio resource control, RRC, connected state and the first event is triggered in the UE, determine an emulated first channel load metric of a set of emulated channel load metrics related to the emulated first event, the emulated first channel load metric including a reference signal received power, RSRP, for a cell reselection from the serving cell to the neighbor cell, determine an actual first channel load metric of the set of the emulated channel load metrics related to the emulated first event, the actual first channel load metric including a RSRP for a handover from the serving cell to the neighbor cell, identify a difference between the emulated first channel load metric and the actual first channel load metric, and report, to a base station, information about the identified difference between the emulated first channel load metric and the actual first channel load metric, receive, from the base station, an update parameter for the cell reselection or the handover of the UE, based on the reported information, emulate a first event of a set of events related to a set of cells including a serving cell and a neighbor cell in case that the UE is in a radio resource control, RRC, connected state and the first event is triggered in the UE, determine an emulated first channel load metric of a set of emulated channel load metrics related to the emulated first event, the emulated first channel load metric including a reference signal received power, RSRP, for a cell reselection from the serving cell to the neighbor cell, determine an actual first channel load metric of the set of the emulated channel load metrics related to the emulated first event, the actual first channel load metric including a RSRP for a handover from the serving cell to the neighbor cell, identify a difference between the emulated first channel load metric and the actual first channel load metric, and report, to a base station, information about the identified difference between the emulated first channel load metric and the actual first channel load metric, receive, from the base station, an update parameter for the cell reselection or the handover of the UE, based on the reported information, wherein the emulated first event comprises the cell reselection of the UE from the first cell to the second cell.