LiSteer: MmWave beam acquisition and steering by tracking indicator LEDs on wireless APs

Muhammad Kumail Haider, Yasaman Ghasempour, Dimitrios Koutsonikolas, Edward W. Knightly

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

17 Scopus citations

Abstract

We present LiSteer, a novel system that steers mmWave beams at mobile devices by repurposing indicator LEDs on wireless Access Points (APs) to passively acquire direction estimates using off-the-shelf light sensors. We demonstrate that LiSteer maintains beam alignment at the narrowest beamwidth level even in case of device mobility, without incurring any training overhead at mobile devices. Our extensive evaluation on a custom dual-band hardware platform comprising highly directional horn antennas as well as practical phased antenna arrays with electronic beam steering shows that LiSteer achieves direction estimates within 2.5 degrees of ground truth on average. Moreover, it achieves beam steering accuracy of more than 97% while in tracking mode, without incurring any client beam training or feedback overhead.

Original languageEnglish (US)
Title of host publicationMobiCom 2018 - Proceedings of the 24th Annual International Conference on Mobile Computing and Networking
PublisherAssociation for Computing Machinery
Pages273-288
Number of pages16
ISBN (Electronic)9781450359030
DOIs
StatePublished - Oct 15 2018
Externally publishedYes
Event24th Annual International Conference on Mobile Computing and Networking, MobiCom 2018 - New Delhi, India
Duration: Oct 29 2018Nov 2 2018

Publication series

NameProceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM

Other

Other24th Annual International Conference on Mobile Computing and Networking, MobiCom 2018
Country/TerritoryIndia
CityNew Delhi
Period10/29/1811/2/18

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

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