Patent ID: 9176216
Filing Date: 2015-11-03
Classification: G01S,H04W

Abstract:
1. A method of determining the location of a mobile device comprising the steps of: (a) receiving measurement information from cells neighboring the serving cell and range information from the serving cell; (b) dividing the serving cell into a plurality of subsectors; (c) placing candidate locations on an intersection of bisectors of the plurality of subsectors and a range determined using the range information; (d) selecting a subset of neighboring and serving cells as a function of the measurement information; (e) determining a radio frequency (RF) coverage centroid for each of the selected neighboring cells; (f) determining a centroid of the determined RF centroids based on a weighted average of selected neighboring cell centroids, wherein each of the weights of the weighted average vary as a function of at least one of a neighboring cell power level, a serving cell power level and an inter-site distance between neighboring cells and serving cells; (g) determining a location of the target mobile device as the candidate location having a minimum distance to the determined centroid.