Paper Info
Title
Verification: Accuracy Evaluation of WiFi Fine Time Measurements on an Open Platform.
Abstract
Academic and industry research has argued for supporting WiFi time-of-flight measurements to improve WiFi localization. The IEEE 802.11-2016 now includes a Fine Time Measurement (FTM) protocol for WiFi ranging, and several WiFi chipsets offer hardware support albeit without fully functional open software. This paper introduces an open platform for experimenting with fine time measurements and a general, repeatable, and accurate measurement framework for evaluating time-based ranging systems. We analyze the key factors and parameters that affect the ranging performance and revisit standard error correction techniques for WiFi time-based ranging system. The results confirm that meter-level ranging accuracy is possible as promised, but the measurements also show that this can only be consistently achieved in low-multipath environments such as open outdoor spaces or with denser access point deployments to enable ranging at or above 80 MHz bandwidth.
Year
DOI
Venue
2018
10.1145/3241539.3241555
MobiCom '18: The 24th Annual International Conference on Mobile Computing and Networking New Delhi India October, 2018
Keywords
Field
DocType
WiFi Localization,Fine Time Measurements,Ranging Evaluation
Open platform,Computer science,Bandwidth (signal processing),Ranging,Computer hardware,Chipset,Distributed computing,Open software
Conference
ISBN
Citations 
PageRank 
978-1-4503-5903-0
21
0.86
References 
Authors
10
8
Name
Order
Citations
PageRank
Mohamed Ibrahim145335.03
Hansi Liu2232.58
Minitha Jawahar3272.77
Viet Nguyen4474.61
Marco Gruteser54631309.81
Richard Howard631125.10
Bo Yu716619.41
Fan Bai82017135.11