Patent · US Active

Positioning enhancement through time-of-flight measurement in WLAN

US9651655B2 · kind B2 · utility

44Cited by

2References

20Claims

0Family size

Assignee

Autotalks Ltd. · IL

Inventors

Ariel Feldman · Raanana, IL
Alex Kobzancev · Nes Ziona, IL
Leonid Menis · Herzliya, IL
Onn Haran · Even Yehuda, IL

Key dates

Filing date	Oct 26, 2015
Grant date	May 16, 2017
Priority date	—
Expiry date	Jan 29, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04W84/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Method and system for obtaining positioning of nodes in a wireless local access network (WLAN), comprise, by an initiator node of the WLAN, calculating a compensated time-of-flight (ToF) of messages exchanged between the initiator node and a target node and calculating a distance of the target node relative to the initiator node using the compensated ToF, thereby obtaining relative positioning between the initiator and target nodes. The compensated ToF is calculated using OFDM symbol slope inputs measured at the initiator and target nodes. Each node is associated with an enhanced WLAN unit adapted to measure and calculate the compensated ToF.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.