The present invention relates to a wireless communication system. A method for a terminal for receiving a signal by means of NAICS (Network-Assisted Interference Cancellation and Suppression) in a wireless communication system that supports carrier aggregation according to one embodiment of the preset invention comprises the steps of: transmitting terminal capability information comprising band combination information indicating the band combination supported by the terminal on the carrier aggregation; and receiving a signal on the basis of the terminal capability information, wherein the band combination information may comprise directive information indicating whether the UE support the NAICS for the band combination.