Peak to sigma ratio measurement with active geo-location for wireless local area network devices
US11736902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2022 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Dec 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/878
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and wireless devices (WDs) for geo-location of wireless devices are disclosed. According to one aspect, a method in a first WD includes: transmitting a sequence of ranging signals and receiving a plurality of ranging response signals from a second WD, the ranging response signals being responsive to the ranging signals. For each of the plurality of ranging response signals, a received sequence of bits is determined. A correlation between the received sequence of bits and an expected sequence of bits is determined. The method also includes determining a subset of the plurality of received sequences of bits deemed not to arise from noise, and determining the subset being based at least in part on the correlations. The method also includes determining a distance between the first WD and the second WD based at least in part on a plurality of received sequences in the subset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.