Dual round trip time mitigation for wireless local area network devices
US12339349B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2024 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Dec 17, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and devices are disclosed for geo-location of wireless local area network (WLAN) devices. According to one aspect, a method for determining a corrected round trip times (RTT) resulting from communication with a WD is provided. The WD is configured with one or two short interframe spacings (SIFS). The method includes performing RTT measurements at successive times. The method includes determining a presence of one or two modes based at least in part on peaks of a kernel density estimation (KDE) surface. The KDE surface is determined from the RTT measurements. When there is only one mode, a corrected RTT is determined based on the RTT measurements and a first SIFS. When there are two modes, a corrected RTT is determined based on the RTT measurements and the first SIFS plus an SIFS offset (Δ), Δ being based at least in part on a difference between the two modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.