| 摘要 |
A power control method in a WCDMA mobile communication system, comprising the steps of: performing a normal outer loop power control after determining user's initial transmission power and initial uplink target signal-to-interference ratio; determining whether a higher priority outer loop power control is performed through judging whether a link signal-to-interference ratio error exceed a error threshold value; continuing to perform the normal outer loop power control until the higher priority outer loop power control is finished. The present invention adjusts the target signal-to-interference ratio value based on the link signal-to-interference ratio error. When the link signal-to-interference ratio error doesn't exceed the threshold, the normal outer loop power control is performed; when the link signal-to-interference ratio error exceeds the threshold, the higher priority outer loop power control is performed. The quick convergence of the power control is ensured through two grades of outer loop power control. The invention also determines the adjustment period of the target signal-to-interference based on different Qos grades satisfying different services; and adaptively regulates step-size based on the current communication quality so as to further quickly converge the power control. |
