Patent · US Active

Method and apparatus for determining distance in a Wi-Fi network

US9143967B2 · kind B2 · utility

2Cited by

2References

30Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Qifan Chen · Newark, US
Kai Shi · San Jose, US
Ning Zhang · Saratoga, US

Key dates

Filing date	Jul 2, 2014
Grant date	Sep 22, 2015
Priority date	—
Expiry date	Jul 2, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04J3/0667
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and apparatus for improving the accuracy of a round trip time (RTT) estimate between a first device and a second device are disclosed. The method involves calculating an acknowledgement correction factor and a unicast correction factor. These correction factors are used to compensate for symbol boundary time errors resulting from multipath effects.

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