Method and apparatus for on-device positioning using compressed fingerprint archives
US8660577B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2010 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | May 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are provided for on-device positioning using compressed fingerprint archives. The method and apparatus may be configured to provide compression of localization fingerprints, to facilitate efficient on-device positioning based on the RF fingerprint model, and to estimate the physical distance between two or more devices. Embodiments of the method may receive a space-to-access point histogram that corresponds to an access point as observed in a space. The histogram may be normalized and a mean and standard deviation may be calculated from the histogram. A weight may be assigned to the access point corresponding to the frequency with which the access point is observed within the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.