Patent ID: 7363049
Filing Date: 2008-04-22
Classification: H04W

Abstract:
1. A method for controlling transmission power levels of a transmitter station, the method comprising: receiving at the transmitting station a transmit power command and a reference signal, the transmit power command indicating an increase or decrease in transmission power for the transmitting station; measuring a received power level of the reference signal and comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal; determining a size of a change in transmit power level using the produced pathloss estimate, wherein the determining a size of a change in transmit power level is determined by comparing a prior pathloss estimate to the produced pathloss estimate, and wherein the produced and prior pathloss estimates are weighted pathloss estimates and the weighted pathloss estimates are determined by multiplying a measured pathloss estimate by a first factor (α) and adding the weighted pathloss estimate to a longterm pathloss estimate multiplied by (1−α); adjusting a transmission power level of the transmitting station by increasing or decreasing the transmit power level in response to the transmit power command in an amount of the determined change in size; and transmitting a communication at the adjusted transmission power level.