Method of transmitting scheduling information in tdd system

A method of transmitting scheduling information in a TDD (Time Division Duplex) system is provided to transmit an uplink indicator, that is, downlink control information so that a terminal can perform uplink transmission more accurately. A base station sets up a wireless frame(S200), transmits the setup information of the wireless frame to a terminal(S210), and then transmits an uplink indicator and uplink radio resource allocation information to the terminal(S220). By referring to the setup information, uplink indicator and uplink radio resource allocation information, the terminal transmits data to the base station(S230).