Apparatus and method for adjusting offset in wireless communication system

PURPOSE: A device and a method for adjusting offset in a wireless communication system are provided to adjust timing offset and frequency offset of a terminal by using non demand ranging response message. CONSTITUTION: An offset producing unit(321) calculates an offset average value of a terminal by using frequency offset and timing offset of previously presumed terminal if a uplink data provided from a terminal dose one exists. A control unit(320) determines whether to transmits a non demand ranging response message by using the offset average value of the terminal. The transmission device(330) transmits the non demand ranging response message including the offset adjusting value of the terminal.