The method of measuring the channel quality information on the downlink in a multi-carrier wireless communication system using a set of carrier

The present invention relates to a system for transmitting a signal using a plurality of component carriers, to a method for measuring channel quality information. The method comprising: measuring a channel quality value of the at least one component carrier assigned to the UE from among the plurality of component carrier (component carrier) that is used in the terminal is the serving cell (serving cell) belongs to transmit the signal to the terminal .; Comparing a threshold for determining whether or not obtain the channel quality value from the plurality of component carriers that are not allocated to the MS from the component carrier channel quality value; The channel quality value includes the step of measuring the threshold value smaller than the plurality of component carriers that are not allocated to the MS from the component carrier channel quality value. Carrier aggregation (Carrier Aggregation), neighboring cells, channel quality