US 12,253,612 B2
Location detection with GNSS and device range measurements
Eldad Perahia, Park City, UT (US); and Vikram Raghu, Santa Clara, CA (US)
Assigned to Hewlett Packard Enterprise Development LP, Spring, TX (US)
Filed by HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP, Houston, TX (US)
Filed on Oct. 28, 2021, as Appl. No. 17/513,552.
Prior Publication US 2023/0136500 A1, May 4, 2023
Int. Cl. G01S 19/42 (2010.01); G01S 19/46 (2010.01)
CPC G01S 19/426 (2013.01) [G01S 19/423 (2013.01); G01S 19/46 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining a set of coordinates, wherein the set of coordinates are provided using Earth as a frame of reference;
calculating a distance between APs representing a first set of range measurements calculated for a set of access points (APs);
obtaining a second set of AP-to-AP range measurements for the set of APs;
and
performing a data correction process by matching the first set of range measurements and the second set of AP-to-AP range measurements, the data correction process comprising:
determining a set of deviations between a range computed from the set of coordinates and the second set of AP-to-AP range measurements; and
updating the set of coordinates by adjusting the set of coordinates based on the set of deviations,
wherein the data correction process reduces deviations between the set of coordinates and the second set of AP-to-AP range measurements,
wherein the updated set of coordinates is associated with determined physical locations of the set of APs, and
wherein the data correction process determines the updated set of coordinates when transmission signals are obstructed by physical barriers or building boundaries.