According to an embodiment, a method of executing measurement in a communication system, a user device and a base station are provided. The method comprises steps of receiving a measuring target including frequency and signal channel state information reference signal (CS-RS) information for measurement from the base station, executing measurement based on the CSI-RS information related to frequency designated in the measure target and reporting the measurement to the base station when the CSI-RS is greater than a threshold. The CSI-RS information includes CSI-RS ID, physical zone ID information and sub-frame information; measurment is conducted based on the frequency-related CSI-Rs information of a measuring target; and if the CSI-Rs is greater than a threshold value, the measuring report is executed to the base station.