Patent ID: 9730013
Date: 2017-08-08
CPC Classifications: G01S,H04W

Claim:
1. A method of 3D geolocation for geolocating a vertical dimension of subscribers connected to a telecom mobile network, performed by an electronic device comprising a processor and a storage, the method comprising: receiving a plurality of samples, wherein each sample is provided by one of the subscribers, and each sample includes a measurement report having 2D location of the corresponding subscriber and signal information of nearby cell sites within the telecom mobile network; distributing, by the processor, the samples that are already 2D-geolocated into a plurality of geographic areas according to 2D locations of the samples; generating, by the processor, a relative sequence of the samples in term of altitude in each said geographic area according to the signal information of the nearby cell sites of the samples, wherein the relative sequence is a relative order of the altitudes of the samples in each said geographic area; determining, by the processor, altitude of each said sample in each said geographic area according to the relative sequence of the samples in each said geographic area; and outputting, by the processor, the altitudes of the samples in each said geographic area, wherein the signal information of the nearby cell sites includes at least one of a number of cell sites measured by each said subscriber, a distance between each said subscriber and the cell sites measured by the subscriber, and a signal quality indicator of the cell sites measured by each said subscriber, wherein the step of generating, by the processor, the relative sequence of the samples in term of altitude in each said geographic area according to the signal information of the nearby cell sites of the samples includes: sorting, by the processor, the samples in each said geographic area according to the number of measured cell sites to generate a first sorted result; sorting the samples in each said geographic according to the distance between each said subscriber and the measured cell sites to generate a second sorted result; sorting the samples in each said geographic area according to the signal quality indicator of the measured cell sites to generate a third sorted result; and generating, by the processor, the relative sequence of the samples in each said geographic area in term of altitude by combining the first, second and third sorted results.