Apparatus and method for geolocating a tag relative to a threshold via phase-based time difference of arrival framework
US10986467B1 · kind B1 · utility
4Cited by
25References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Sep 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a system and method for geolocation of a tag relative to a predetermined threshold based upon receipt of duplicate beacon transmission for a same channel. In response to the duplicate transmission, the tag determines relative phase shift resulting from difference in path length, and evaluates correlation of a highest magnitude phase shift to the absence of any difference in path length to assess proximity of the tag with respect to the aforementioned predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.