Patent ID: 7266385

Claim:
A method of transmission power control for a wireless transmit receive unit (WTRU) that transmits data signals in a forward channel where the WTRU is configured to make forward channel power adjustments as a function of target metrics computed based on the data signals as received over the forward channel, the method comprising: receiving data signals from the WTRU on the forward channel; computing target metrics for the WTRU's forward channel power adjustments based on the detection of predetermined error conditions in the signals received on the forward channel including: setting an initial target metric value; after a preliminary period at the initial value, changing the target metric by a step up or a step down amount at time intervals of a predetermined length whereby the target metric is increased by the step up amount if a predetermined error condition has been detected in an immediately preceding time interval or is decreased by the step down amount if the predetermined error condition has not been detected the immediately preceding time interval; and setting the step up and step down amounts at a first relatively high transient state level and reducing the step up and step down amounts by a selected amount if a predetermined error condition has been detected in an immediately preceding time interval until they are reduced to a second relatively low steady state level.