A POWER CONTROL METHOD IN A WCDMA MOBILE COMMUNICATION SYSTEM

摘要

A method for power controlling in a WCDMA mobile communication system, the method for power controlling includes the steps of: performing normal Outer Loop Power Control after determining user's initial Transmitting power and initial uplink SIRtarget; determining whether to perform the High Priority Outer Loop Power Control by judging if a link SIRerror exceeds an error threshold, and keeping on the normal Outer Loop Power Control after the performance of the High Priority Outer Loop Power Control. The present invention adjusts the SIRtarget rapidly according to the link SIRerror. Normal Outer Loop Power Control should be performed when the link SIRerror does not exceed the threshold, and the High Priority Outer Loop Power Control will be adopted when the link SIRerror exceeds the threshold; it ensures the rapid convergence of power control by two-level Outer Loop Power Control; the present invention also determines the adjusting period of SIRtarget according to different Qos levels met by different services, and the power control can be further converged rapidly by the method of adaptively adjusting step length according to the current communication quality.