Methods and systems for estimating a user position in a WLAN positioning system based on user assigned access point locations
US7471954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Aug 26, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of estimating a location of a WLAN-enabled user-device in a WLAN-based positioning system is provided. The WLAN-enabled device receives signals transmitted by WLAN-enabled access points in range of the WLAN-enabled user-device so that observed WLAN-enabled access points identify themselves. The method includes accessing a master database that associates WLAN-enabled access points with corresponding audited locations as determined by an audit of a relatively large geographic area and obtaining location information for any identified WLAN-enabled access point. The method includes accessing a supplemental database to obtain inferred location information corresponding to any identified WLAN-enabled access point. The supplemental database has a relatively small set of WLAN-enabled access points and corresponding inferred locations. The inferred locations are inferred based on input by a user of the WLAN-based positioning system. The method includes estimating a location of the WLAN-enabled user-device based on the audited location information and the inferred location information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.