Patent ID: 8184606

Claim:
A signal monitoring apparatus of a base station in a communication system having a plurality of antennas, the signal monitoring apparatus comprising: a transmitting/receiving unit for transmitting a plurality of transmit signals by using the plurality of antennas and processing a plurality of receive signals received through the plurality of antennas; a radio frequency calibration unit for calibrating the plurality of transmit signals transmitted through the plurality of antennas and processing at least one target transmit signal among the plurality of transmit signals so as to monitor the at least one target transmit signal; and a signal monitoring unit for receiving at least one first signal or at least one second signal, and analyzing the at least one first signal or the at least one second signal to transmit the analysis result to user equipment, the at least one first signal being a signal processed from at least one target receive signal among the plurality of receive signals, and the at least one second signal being a signal processed from the at least one target transmit signal by controlling the radio frequency calibration unit, wherein the radio frequency calibration unit stops the signal processing for monitoring the at least one target transmit signal while performing calibration on the plurality of transmit signals.