TDOA based positioning with calculation of correction factors for compensating the clock offsets of unsynchronized network stations
US8818406B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jan 22, 2010 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Mar 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention presents a method, arrangement and computer program product for clocking exploiting the relative behavior of clocks of individual receiving stations as well as a corresponding modeling to derive a time difference of arrival of a signal from a user device which can be used to correct the time difference of arrival based on the modeled clock behavior and leads to a correct clocking of received user signals without the need of synchronization of the clocks in the various receiving stations. This principle is applicable to a plurality of pairs of receiving stations and beacon signals transmitted amongst them and allows for a correct location estimation of a user device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.