Enhanced Cell ID Location Method Using Non Uniform Subsectors and Neighboring Cell Centroid
First Claim
24. A method of determining the location of a mobile device in a communications network in communication with a serving cell comprising the steps of:
- receiving measurement information from cells neighboring the serving cell and range information from the serving cell;
determining a centroid for each of a plurality of neighboring and serving cells;
determining a centroid for the plurality of centroids of neighboring and serving cells;
determining a plurality of candidate locations as a function of an intersection of bisecting serving cell lines and the received range information; and
determining a location of the mobile device as the candidate location having a minimum distance to the determined centroid of the plurality of centroids.
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Accused Products
Abstract
A system and method of determining the location of a mobile device. Network measurement report information may be received from a target mobile device, the NMR having measurement information and range information of the target mobile device from a cell serving the device. The serving cell may be divided a plurality of subsectors and candidate locations placed on an intersection of a range formed from the range information and bisectors of the plurality of subsectors. A subset of neighboring and serving cells may be selected as a function of the NMR measurement information and a radio frequency (RF) coverage centroid determined for each of the selected neighboring cells. A centroid of the determined RF centroids may be determined, and a location of the target mobile device estimated as the candidate location having a minimum distance to the determined centroid.
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Citations
29 Claims
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24. A method of determining the location of a mobile device in a communications network in communication with a serving cell comprising the steps of:
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receiving measurement information from cells neighboring the serving cell and range information from the serving cell; determining a centroid for each of a plurality of neighboring and serving cells; determining a centroid for the plurality of centroids of neighboring and serving cells; determining a plurality of candidate locations as a function of an intersection of bisecting serving cell lines and the received range information; and determining a location of the mobile device as the candidate location having a minimum distance to the determined centroid of the plurality of centroids. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29)
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29-1. The method of claim 24 further wherein the step of determining a centroid for the plurality of centroids further comprises the steps of:
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determining whether a repeater is present in the serving or neighboring cells; if the presence of a repeater is determined, then using a location of the repeater as one of the plural determined centroids; and weighting the location of the repeater as a function of information received from the repeater.
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Specification