Table 1.

Notations and parameters.

Items	Description
NRP	Number of RPs.
Ri(i = 1, ⋯ ,NRP)	Physical position of the i-th RP.
di = ir(i = 1, ⋯ ,NRP)	Physical distance between the i-th RP and AP (in meter).
dT	Physical distance between the TP and AP (in meter).
r	Interval of distance-adjacent RPs (in meter).
δ	Physical distance between the i-th RP and TP (in meter).
Pt	Transmit power of AP (in dBm).
Pi(i = 1, ⋯ ,NRP)	Pre-sensed RSS-mean at Ri (in dBm).
$\overline{P_T}$	Expectation of the new sensed RSS at TP in Gaussian distribution (in dBm).
σ	Standard deviation of the new sensed RSS at TP (in dBm).
L0	Path loss in the first meter in logarithmic attenuation channel (in dBm).
α	Path loss exponent in logarithmic attenuation channel.
Ex{f(x)}(x = i,j,δ)	Expectation of the function f(x) with respect to the variable x.
$C_{\text{KNN}}^{*}$	Estimated position by the KNN localization algorithm.
$C_{\text{WKNN}}^{*}$	Estimated position by the WKNN localization algorithm.