Provided are a method for making a quality measurement report by a terminal in which a plurality of serving cells in the same frequency band are configured, and a terminal using the method. The method comprises the steps of: receiving measurement configuration information; performing quality measurements on some or all of the plurality of serving cells according to the measurement configuration information; determining whether a measurement report criterion is met on the basis of a result of the quality measurement; and transmitting a report message including the result of the quality measurement when the measurement report criterion is met, wherein the measurement configuration information contains reference information, and the reference information indicates a reference cell by which it is determined whether the measurement report criterion is met.