A method for reporting, by a user equipment (UE), channel state information (CSI) in a wireless communication system, includes transmitting, to a base station, UE capability information including information for a maximum number of channel state information-reference signal (CSI-RS) resources; receiving, from the base station, CSI-RS configuration information via a higher layer signaling; receiving, from the base station, a channel state information-reference signal (CSI-RS) on at least one CSI-RS port based on the CSI-RS configuration information; measuring a channel based on the CSI-RS; and reporting, to the base station, a result of the channel measurement.