Li-Wi: An upper layer hybrid VLC-WiFi network handover solution

Elnaz Alizadeh Jarchlo*, Elizabeth Eso, Hossein Doroud, Bernhard Siessegger, Zabih Ghassemlooy, Giuseppe Caire, Falko Dressler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Visible light communications (VLC) as a wireless communication technology complementing the radio frequency-based wireless fidelity (WiFi). The hybrid VLC/WiFi, offers the best of both worlds, which are of particular interested in vehicular VLC (V-VLC) that have not yet been explored yet. In this paper, we propose an upper layer hybrid VLC-WiFi network handover solution known as “Li-Wi” to address the handover issues in V-VLC due to the mobility, shadowing, and obstacles. Li-Wi utilizes the benefits of high data rates and link availability of VLC and WiFi, respectively. It offers robust connectivity with lower handover outage duration (Thod) and a high network throughput. Based on experimental evaluation results using a small-scale prototype, we demonstrate the advantage of the proposed approach. Our experiments reveal that, in an indoor vehicular network Li-Wi is highly efficient in minimizing (Thod) to 0.03 and 0.06 s for horizontal and vertical handovers, respectively.

Original languageEnglish
Article number102705
Number of pages10
JournalAd Hoc Networks
Early online date16 Oct 2021
Publication statusPublished - 1 Jan 2022


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