Patent · US Active

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

US8787191B2 · kind B2 · utility

4Cited by

1References

19Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

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

Key dates

Filing date	Nov 15, 2011
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Jul 10, 2032

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.