Location determination using GNSS and distance measurements of the device

By employing device-to-device distance measurements and geographic boundary corrections, the method enhances GPS accuracy for network devices within obstructed environments, reducing errors from 20.8 meters to 2.5 meters.

DE102022108866B4Active Publication Date: 2026-07-16HEWLETT PACKARD ENTERPRISE DEV LP
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Patent Information

Application Number
DE102022108866
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-10-28
Filing Date
2022-04-12
Publication Date
2026-07-16
Estimated Expiration
2042-04-12

AI Technical Summary

Technical Problem

GPS signals are easily disrupted by geological and man-made features, leading to inaccurate geolocation of network devices, especially in environments with physical barriers, and existing methods do not effectively improve location accuracy using network device measurements.

Method used

A method involving device-to-device distance measurements, data correction processes, and geographic boundary representation to refine the reported coordinates of network devices, including steps to discard inaccurate locations, update with improved calculations, and correct based on time-averaged data and structural boundaries.

Benefits of technology

Significantly improves location accuracy of network devices within structures by reducing average GPS error from 20.8 meters to 2.5 meters, ensuring precise geolocation even in obstructed environments.

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Abstract

A procedure that includes the following: Obtaining a set of coordinates of a set of access points (APs) (210) wherein the set of coordinates (410) is provided using the earth as a reference system; Calculating a distance between APs, representing a first set of distance measurements calculated for the set of APs; Obtain a second set of AP-to-AP distance measurements for the set of APs; and Performing a data correction process by matching the first set of distance measurements and the second set of AP-to-AP distance measurements, wherein the data correction process includes the following: Determining a set of deviations between an area calculated from the coordinate set and the second set of AP-to-AP distance measurements; and Updating the coordinate set by adjusting the coordinate set based on the set of deviations, where the data correction process reduces discrepancies between the coordinate set and the second set of AP-to-AP distance measurements, where the updated coordinate set is assigned to specific physical locations of the set of APs, and the data correction process determines the updated coordinate set when transmission signals are obstructed by physical barriers or building boundaries.
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