Device-to-device radio frequency proximity determination
US10412545B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Nov 18, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present disclosure describes techniques and apparatuses for device-to-device radio frequency proximity determination. These techniques, in contrast to conventional cellular and GPS services, can accurately locate mobile devices at relatively low cost. In some aspects, three or more mobile communication devices communicate radio frequency ranging signals and, using information about these signals, a distance and direction between two of the devices is determined. In some other aspects, two mobile communication devices communicate radio frequency ranging signals separated in time, and after movement of one of the mobile communication devices. Using information about these two signals, a distance and direction between the two devices is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.