Patent ID: 7995520

Claim:
A wireless communication system comprising a plurality of base stations and a plurality of terminals wherein each of said base stations comprises means that notifies said terminals of an intensity of a received interference power, each of said terminals comprises a power controller that controls a transmission power for transmitting data to a base station, which is one of said plurality of base stations and to which data is to be transmitted, by referencing an intensity of interference power (OSI: Other Sector Interference) notified from base stations to which data is not to be transmitted, the power controller calculates a decision value for increasing/decreasing the transmission power, said decision value being variable according to a current transmission power of the terminal and propagation attenuations between the terminal and the base stations to which data is not to be transmitted, the power controller controls the amount of transmission power increase/decrease according to the decision value for increasing/decreasing a transmission power, and each of said terminals further comprises: means that measures the propagation attenuations between the terminal and the base stations to which data is not to be transmitted; means that outputs the decision value specifying an increase in the power that is variable according to the current transmission power and the propagation attenuations when the intensity of the interference power is low and that outputs the decision value specifying a decrease in the power that is variable according to the current transmission power and the propagation attenuations when the intensity of the interference power is high; and means that outputs a power increase/decrease amount that is variable according to the decision value for increasing/decreasing a transmission power and that is decided in one transmission power adjustment.