System and method for power control in a wireless communication system

An apparatus for power control in a wireless communication system, the apparatus comprising:

• a mobile station for measuring first channel quality information from a signal received from a base station and transmitting the first channel quality information to the base station, receiving a power control message including a difference between an average channel quality value and a reference channel quality value from the base station, wherein the average channel quality value is obtained by averaging the first channel quality information and second channel quality information measured from a signal received by the base station, and the reference channel quality value is a reference required by the base station, and detecting the difference between the average channel quality value and the reference channel quality value and setting a transmission power for data communication based on the difference.

An apparatus for power control in a wireless communication system, the apparatus comprising:

• a base station for receiving first channel quality information measured by a mobile station, measuring second channel quality information from a signal received from the mobile station, calculating an average channel quality value of the first channel quality information and second channel quality information, and measuring a difference between the average channel quality value and a reference channel quality value of a received signal, generating a power control message including the difference, and transmitting the power control message to the mobile station.