Patent ID: 8116789
Filing Date: 2012-02-14
Classification: G01S

Abstract:
1. A method of estimating the location of a mobile terminal in a mobile communications network having a plurality of base stations, the method including: determining at least one signal parameter measurement for the mobile terminal in relation to each of the plurality of base stations; using the determined signal parameter measurements to obtain a first distance estimation of the mobile terminal from each of the plurality of base stations; and using at least one estimator on each of the first distance estimations to obtain a refined distance estimation of the mobile terminal from each of the plurality of base stations, the plurality being the number i, the estimator conforming to a format selected from the following: where: i=1, 2, 3, σ β(i)=(ln(10)/B(i)) B(i)=44.9−6.55 log h h A(i) is an estimation of a propagation path-loss quantity from Base Station (i), R