System and methods for learning wireless transceiver locations and updating a spatially-dependent path-loss model
US10114104B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2017 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Jun 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined via offline calibration. Automated maintenance and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for updating a signal strength database are disclosed. In one variation, a computer-implemented method of discovering a new or moved wireless access point (AP) within an indoor environment involves flagging one of the wireless APs as the new or moved AP; determining a location of the new or moved AP using information from at least one of an installation log and an AP location solver; determining transmit strengths and estimated received signal strengths of signals transmitted from calibration reference points (RPs) to the AP using a spatially-dependent path-loss model; and adding the transmit strengths and estimated received signal strengths to the signal strength database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.