Patent ID: 7342898

Claim:
A method for determining transmission power of a first station in a wireless packet data communication system, comprising: transmitting a preliminary signal with a first transmission power from the first station to a second station; transmitting a first packet data from the first station to the second station with the first transmission power; increasing the transmission power of the first station to an increased second transmission power if the first packet data transmission is not successfully received by the second station, wherein the increased second transmission power is calculated based on the first transmission power used by the first station in the first packet data transmission to the second station, a controlled amount of transmission power of the first station as perceived by the second station during a previous packet data transmission, a changed amount of power of the second station received at the first station during a previous packet data transmission, and a channel compensating value received from the second station corresponding to a number of allocated channels as determined by the second station; and transmitting a second packet data from the first station to the second station with the increased second transmission power.