Method and equipment for determining the closed-loop power control setpoint in a wireless packet data communication system

摘要

"METHOD AND EQUIPMENT FOR DETERMINING THE CLOSED MESH POWER CONTROL SETTING POINT IN A WIRELESS PACKAGE DATA COMMUNICATION SYSTEM. The present invention consists of a new and improved method and equipment for performing mesh power control A method to implement the external reverse link loop using only the pilot signal is described. This method is especially useful when the data signals are present only in short bursts in such a way that the error rates of packets or frames (PER or FER) cannot be estimated accurately. Furthermore, since this method provides a mechanism for the accurate adjustment of the set point even without an estimate of PER (FER), it can also be used to improve the accuracy of the performance of the external loop when such an estimate becomes available The present invention estimates a "pilot bit error rate" (PBER) (200) where each pilot "bit" consists of a number of c pilot hips distributed through a frame. In addition, it estimates the normalized variance of signal energy (or C / I) (202) for each packet.