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Off-the-shelf Wi-Fi Indoor Smartphone Localization
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Software and Computer systems, SCS. (Networked Syst Secur Grp)ORCID iD: 0000-0003-2022-3976
KTH, School of Electrical Engineering and Computer Science (EECS), Computer Science, Software and Computer systems, SCS. (Networked Syst Secur Grp)ORCID iD: 0000-0002-3267-5374
2021 (English)In: 17Th Conference On Wireless On-Demand Network Systems And Services (WONS 2022), IEEE , 2021Conference paper, Published paper (Refereed)
Abstract [en]

Recently released Wi-Fi adapters, such as Intel AX200 802.11ax NIC, support both Channel State Information (CSI) measurement and Fine Time Measurement (FTM). Angle of Arrival (AoA) estimation with CSI, using MUltiple SIgnal Classification (MUSIC), and FTM are both promising localization methods. But each suffers from practical constraints pertinent to the specific hardware and firmware used. The result can be rather inaccurate localization if AoA or FTM alone were used. We identify the issues/challenges specific to AX200, and as a remedy, we propose a localization approach that combines both CSI-based AoA and FTM. Our approach does not require any modification of the localization target device. This makes the solution readily available for localizing smartphones or any WiFi devices with FTM functionality. Our experimental evaluation shows that our approach achieves a successful localization ratio of 80%, with localization error less than 1 m; and less than 0.5 m for 66% of the experiments.

Place, publisher, year, edition, pages
IEEE , 2021.
Keywords [en]
CSI calibration, FTM, MUSIC, Android
National Category
Nursing Cancer and Oncology Computational Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-316700DOI: 10.23919/wons54113.2022.9764448ISI: 000838599200005Scopus ID: 2-s2.0-85130239678OAI: oai:DiVA.org:kth-316700DiVA, id: diva2:1692953
Conference
17th Conference on Wireless On-Demand Network Systems and Services (WONS), MAR 30-APR 01, 2022, ELECTR NETWORK
Note

Part of proceedings: ISBN 978-3-903176-46-1

QC 20220905

Available from: 2022-09-05 Created: 2022-09-05 Last updated: 2023-01-17Bibliographically approved

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Jin, HongyuPapadimitratos, Panagiotis

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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More languages
Output format
  • html
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  • asciidoc
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