POWER-EFFICIENT CHANNEL QUALITY MEASURING METHOD IN A MOBILE COMMUNICATION SYSTEM IN WHICH CARRIER AGGREGATION IS EMPLOYED, AND A DEVICE FOR THE SAME

摘要

The present invention relates to a method in which a terminal carries out channel quality measurement in a power-efficient fashion in a mobile communication system in which carrier aggregation is employed, and to a terminal device for the same. In order for a terminal to carry out a channel quality measurement operation in a power-efficient fashion in a mobile communication system in which carrier aggregation is employed, if the terminal supports measurement based on serving cell quality, then an additional judgment is made as to whether the terminal is configured for simultaneous communication with a plurality of serving cells and, if the terminal does support measurement based on serving cell quality and is configured for simultaneous communication with a plurality of serving cells, then a decision is made as to whether the quality-representing value for the plurality of serving cells is at or above a threshold value and, if the quality-representing value for the plurality of serving cells is at or above the threshold value, then a quality measurement is carried out within a limited range taking into account the plurality of serving cells.