Location tracking for mobile device using Wi-Fi access point cluster
US9445241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2014 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/33
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method includes determining a radio frequency (RF) fingerprint mapping to an indoor floor plan for an indoor area. The method includes clustering Wi-Fi access point devices deployed in the indoor area into groups of Wi-Fi access point devices based on RF fingerprint data received by at least one reference point device. The method includes selecting a Wi-Fi access point device from each group of Wi-Fi access point devices and determining a RF fingerprint based on the selected Wi-Fi access point devices. The method includes receiving a request for a location associated with a mobile device. The request includes a sampled RF fingerprint associated with the mobile device. The method also includes comparing the RF fingerprints based on the selected Wi-Fi access point devices with the sampled RF fingerprint associated with the mobile device to determine a location of the mobile device within the indoor area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.