Disclosed is a method for monitoring downlink control information in a communication system, including receiving information for an orthogonal frequency division multiplex (OFDM) symbol and information for frequency resources through higher layer signaling, and monitoring the downlink control information on a control region defined based on the information for the OFDM symbol and the information for the frequency resources, wherein the control region includes a user equipment (UE)-dedicated search space and a UE-common search space.