Calculation of Power Step…Signal Level

Calculation of Power Step…Signal Level

Calculation of power adjustment step based on receive level (RxLev)

When RxLev < ULSSLOWTHRED/DLSSLOWTHRED, the power should be increased. The formula is as follows:

Power adjustment step = min{|(ULSSHIGHTHRED/DLSSHIGHTHRED + ULSSLOWTHRED/DLSSLOWTHRED) ÷ 2 - RxLev|, MAXVALADJRX}

When RxLev > ULSSHIGHTHRED/DLSSHIGHTHRED, the power should be decreased.

The poorer the receive quality, the more sensitive the level adjustment. Therefore, the BSS adjusts the receive quality when decreasing the power based on RxLev. In Huawei II Power Control algorithm, receive quality is classified into three quality zones (0, 1-2, ≥3). The maximum step of power adjustment on downlink is different for the three quality zones. The step is specified by MAXSTEP0/MAXSTEP1/MAXSTEP2. The adjustment step is calculated according to receive quality only when the power is decreased according to RxLev.

Power adjustment step = min{|(ULSSHIGHTHRED/DLSSHIGHTHRED + ULSSLOWTHRED/DLSSLOWTHRED) ÷ 2 - RxLev|, MAXSTEP0/MAXSTEP1/MAXSTEP2}