1、SSM解釋為measured signal strength，應該是手機當前的信號強度；PWR_U解釋the output power used by the MS during the measurement period, 應該為考慮到上一次上行功控后的發(fā)射功率，即以時間長度為480ms的measurement period內(nèi)的發(fā)射功率，最大功控范圍為16db。


2、質量濾波中的PWR_U應該也是同樣的原理

3、a、b是where a and b (b = 1 - a) represent the filter coefficients，即a、b為濾波器指數(shù)，且b=1-a。
至于a、b的值要根據(jù)下面表格進行查詢[attach]164180[/attach]
其中的L根據(jù)下列的公式進行計算。
Each filter length (L) corresponds to a certain value of a, and L is determined
in the following way:
if SS_COMP(k) < SS FILTERED (k-1)
then L = SSLENUL
else L = SSLENUL * UPDWNRATIO / 100 (3)
where L is rounded upwards to SACCH periods. When the length exceeds 30
SACCH periods, the length is set to 30.
To enable calculating and sending the power order immediately after
assignment or handover, the filter is initiated with SS FILTERED (k-1) = SSDESUL.
This leads to that the regulation starts immediately after the first valid
Measurement report.

質量濾波中的L也是同樣原理，具體公式可以參考愛立信的UD