Patent ID: 8265681

Claim:
A method of adjusting a target signal-to-interference ratio, SIR, for use in controlling transmitted power of a signal received from a remote transmitter, the method comprising: for each of a plurality of iterations of an outer-loop power control loop: measuring a short-term block error rate for the received signal; calculating a coarse SIR adjustment as a function of the short-term block error rate, a target block error rate, and a first loop tuning parameter; and determining a new target SIR based on a prior target SIR and the calculated coarse SIR adjustment; and for one or more of the plurality of iterations: computing a smoothed block error rate for an interval corresponding to two or more transmission time intervals; and calculating a fine SIR adjustment as a function of the smoothed block error rate, the target block error rate, and a second loop tuning parameter; wherein determining the new target SIR is further based on the fine SIR adjustment.