High resolution wireless indoor positioning system for legacy standards-based narrowband mobile radios
US9014172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Oct 16, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0218
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two or more data packets transmitted through a wireless channel are received using a receiver device. The two or more data packets are a result of two or more transmissions that are made sequentially in time at different center frequencies in order to span a desired bandwidth. Each data packet of the two or more data packets is transmitted at a single center frequency. Time differences and/or carrier phase differences among the two or more transmissions are estimated. A time-of-arrival of one or more data packets of the two or more data packets is calculated using each data packet of the two or more data packets and one or more of the estimated time differences, the different center frequencies, and the estimated carrier phase differences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.