RETRO: Retroreflector Based Visible Light Indoor Localization for Real-time Tracking of IoT Devices

Sihua Shao, Abdallah Khreishah, Issa Khalil

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Indoor localization is very important to enable Internet-of-things (IoT) applications. Visible light communication (VLC)-based indoor localization approaches enjoy many advantages, such as utilization of existing ubiquitous lighting infrastructure, high location and orientation accuracy, and no interruption to RF -based devices. However, existing VLC-based localization methods lack a real-time backward channel from the device to landmarks and necessitate computation at the device, which make them unsuitable for real-time tracking of small IoT devices. In this paper, we propose and prototype a retroreflector-based visible light localization system (RETRO), that establishes an almost zero-delay backward channel using a retroreflector to reflect light back to its source. RETRO localizes passive IoT devices without requiring computation and heavy sensing (e.g., camera) at the devices. Multiple photodiodes (i.e., landmarks) are mounted on any single unmodified light source to sense the retroreflected optical signal (i.e., location signature). We theoretically derive a closed-form expression for the reflected optical power related to the location and orientation of the retroreflector, and validate the theory by experiments. The characterization of received optical power is applied to a received signal strength indicator and trilateration based localization algorithm. Extensive experiments demonstrate centimeter-level location accuracy and single-digit angular error.

Original languageEnglish
Title of host publicationINFOCOM 2018 - IEEE Conference on Computer Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1025-1033
Number of pages9
Volume2018-April
ISBN (Electronic)9781538641286
DOIs
Publication statusPublished - 8 Oct 2018
Event2018 IEEE Conference on Computer Communications, INFOCOM 2018 - Honolulu, United States
Duration: 15 Apr 201819 Apr 2018

Other

Other2018 IEEE Conference on Computer Communications, INFOCOM 2018
CountryUnited States
CityHonolulu
Period15/4/1819/4/18

Fingerprint

Photodiodes
Light sources
Lighting
Experiments
Cameras
Internet of things
Visible light communication

Keywords

  • Indoor localization
  • Retroreflector
  • Visible light

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

Cite this

Shao, S., Khreishah, A., & Khalil, I. (2018). RETRO: Retroreflector Based Visible Light Indoor Localization for Real-time Tracking of IoT Devices. In INFOCOM 2018 - IEEE Conference on Computer Communications (Vol. 2018-April, pp. 1025-1033). [8485817] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INFOCOM.2018.8485817

RETRO : Retroreflector Based Visible Light Indoor Localization for Real-time Tracking of IoT Devices. / Shao, Sihua; Khreishah, Abdallah; Khalil, Issa.

INFOCOM 2018 - IEEE Conference on Computer Communications. Vol. 2018-April Institute of Electrical and Electronics Engineers Inc., 2018. p. 1025-1033 8485817.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shao, S, Khreishah, A & Khalil, I 2018, RETRO: Retroreflector Based Visible Light Indoor Localization for Real-time Tracking of IoT Devices. in INFOCOM 2018 - IEEE Conference on Computer Communications. vol. 2018-April, 8485817, Institute of Electrical and Electronics Engineers Inc., pp. 1025-1033, 2018 IEEE Conference on Computer Communications, INFOCOM 2018, Honolulu, United States, 15/4/18. https://doi.org/10.1109/INFOCOM.2018.8485817
Shao S, Khreishah A, Khalil I. RETRO: Retroreflector Based Visible Light Indoor Localization for Real-time Tracking of IoT Devices. In INFOCOM 2018 - IEEE Conference on Computer Communications. Vol. 2018-April. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1025-1033. 8485817 https://doi.org/10.1109/INFOCOM.2018.8485817
Shao, Sihua ; Khreishah, Abdallah ; Khalil, Issa. / RETRO : Retroreflector Based Visible Light Indoor Localization for Real-time Tracking of IoT Devices. INFOCOM 2018 - IEEE Conference on Computer Communications. Vol. 2018-April Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1025-1033
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