Patent ID: 8718676
Filing Date: 2014-05-06
Classification: G01S,H04W

Abstract:
1. A method for selecting a location estimate solution in a wireless location system, comprising: collecting network measurement report (NMR) data over a duration of time; pre-processing the NMR data; determining from the pre-processed NMR data that no cells are present with valid timing measurements; determining from the pre-processed NMR data that no cells are present with valid power measurements; and activating a scenario (LES wherein the LES determining whether only a single serving cell identifier is reported, and if so computing a location estimate as a centroid of a serving cell's serving geographic area; determining whether two or more serving cell identifiers are reported, and if so computing the location estimate as a centroid of a common region with a highest number of overlapping serving geographic areas of the reported serving cells; determining whether one or more neighbor cell identifiers are reported without any serving cell information, and if so computing the location estimate as a centroid of a common region with a highest number of overlapping neighbor geographic areas of the reported neighbor cells; and determining whether one or more neighbor cells are reported in addition to one or more serving cells, and if so computing the location estimate as a centroid of a common region of various serving geographic areas of the reported serving cells with a highest number of cells overlapping, wherein the computed location estimate is biased towards the direction of a centroid of maximum overlapping of neighbor geographic areas of the additional reported neighbor cells.