Angle of arrival of wireless local area network devices using a switched beam antenna
US12228659B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2024 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Jul 11, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring the angle of arrival AOA of Wi-Fi packets, using a switched beam antenna SBA is described. Wide antenna beams, quadrants, are selected in turn and a burst of packets is transmitted on each quadrant. The quadrant with the highest average signals strength is selected. Then the narrow antenna beams that make up that selected quadrant are selected, in sequence, and the average signal strength for each narrow beam is recorded. The narrow beam with the highest average signal strength is returned as the AOA. Based upon which narrow beam recorded the highest signal strength, the next sequence of antenna beams is selected. When the SBA is mounted on a mobile platform, the parameters of the transmission bursts are chosen such that the angular error due to cornering of the platform is negligible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.