What is FilterCoefficient in QuantityconfigEUTRA in MeasConfig message ?

Question

QuantityConfigEUTRA ::= SEQUENCE {
filterCoefficientRSRP
filterCoefficientRSRQ
}

Answer 1

FilterCoefficient is the IE in which UE applies filtering of the measurements for that measurement quantity.
The filtering is performed according to the following formula:

Fn = (1 − a) * Fn-1 + a * F −Mn

The variables in the formula are defined as follows:

Fn is the updated filtered measurement result step n.
Fn−1 is the old filtered measurement result step n – 1.
Mn is the latest received measurement result from physical layer measurements.
a = 1/2^(K/4) and k is filter co-efficient for corresponding measurement quantity received by the quantityconfig parameter