Method and apparatus for controlling power in a wireless communication system

PURPOSE: A power control method and apparatus thereof are provided to prevent the coverage reduction of a base station and to satisfy the requirement of an error vector size. CONSTITUTION: A reception unit(120) receives information for a channel state from a portable terminal. A transmission unit(130) transmits a signal in the portable terminal. A control unit(140) calculates information related to code rates considering the modulation order of the portable terminal using the information related to the channel state. The control unit controls transmission power for the portable terminal based on the information related to the calculated code rates. [Reference numerals] (100) Mobile terminal; (110) Base station; (120) Reception unit; (130) Transmission unit; (140) Control unit