Methods, devices and systems for estimating distance with transmitted frequency sets
US12213044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2021 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Mar 2, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method can include determining a plurality of sample sets, each sample set being different from one another and including a plurality of frequencies separated by a uniform frequency range; wirelessly transmitting information identifying the sample sets for at least one remote device; for each sample set, transmitting a tone on each frequency of the sample set, receiving a tone on each frequency of the sample set from another device, and determining phase difference values for the received tones with respect to corresponding transmitted tones. From the phase shift values, a distance to the other device can be estimated. Corresponding devices and systems are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.