Method and apparatus for monitoring control channel in wireless communication system

A UE for monitoring a control channel in a wireless access system, the UE comprising:

• a radio frequency (RF) unit for communicating a radio signal with an outside of the UE;
• and
• a control unit connected to the RF unit,
• wherein the control unit sets the number of maximum blind decoding times for each UE-specific search space and a common search space to which the control channel is transmitted, monitors a plurality of candidate control channels in each of the search spaces, based on the number of maximum blind decoding times, set in the respective search spaces, and receives downlink control information through a control channel which has succeeded in the blinding decoding among the plurality of candidate control channels, and
• wherein the common search space is allocated to at least one carrier group that includes at least one component carrier.