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QoE aware fuzzy logic-based vertical handover scheme for VLC heterogeneous networks

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Abstract

The complementary roles of visible light communication (VLC) and radio frequency (RF) in both coverage and capacity have made their combined use essential in wireless communication. While this combination offers some advantages over a sole media, it presents challenges with respect to the handover from VLC to RF, provision of seamless connections between VLC and RF, and the blockage of line-of-sight (LOS) in VLC. Previous works have not paid much attention to the quality of experience (QoE) of a user in VLC heterogeneous network (HetNet) and the effect of user's mobility on QoE. Thus, in this article, we consider a heterogeneous environment where a user moves between two-tier VLC-RF network. We propose a fuzzy logic approach termed the estimated quality of experience fuzzy logic (EQFL-VHO) scheme. This scheme fuses four input metrics variables, namely: estimated QoE in RF, handover failure probability, delay cost, and velocity of the user equipment (UE), to decide whether handover needs to be triggered. After fuzzification, the handover factor (HF) is used to determine whether handover to RF would enhance user's QoE or not. Our scheme couples the advantages of the Mamdani fuzzy logic system and QoE estimation to enhance system performance. Comparatively, simulation outcomes demonstrate that the EQFL-VHO scheme outperforms traditional methods including immediate VHO (I-VHO) and dwell VHO (D-VHO), as well as alternative fuzzy logic techniques like combinatorial fusion analysis (CFA) and Kalman Filter and Fuzzy Logic in Heterogeneous Wireless Networks (KAFUZ), in terms of QoE enhancement, reduced handover failures, and minimized delay costs. Additionally, our approach effectively diminishes handover initiation frequency.

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Change history

  • 01 May 2024

    The original article has been corrected: 1) incorrect affiliation links for the 3rd and 4th authors, the 3rd author's affiliation should be affiliation 1 "Department of Electrical and Electronic Engineering, Takoradi Technical University, P. O. Box, 256, Takoradi, Ghana" instead of affiliation 3; the 4th author's affiliation should be affiliation 3 "Department of Electrical Engineering, École de Technologie Supérieure, Université du Québec, Montreal, Canada" instead of "Applied engineering, École de Technologie Supérieure (ETS), Université du Québec, Montreal, Canada"; 2) The first and second sentences in the abstract section are the same, the duplicate has been removed.

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Authors and Affiliations

  1. Department of Electrical and Electronic Engineering, Takoradi Technical University, P. O. Box, 256, Takoradi, Ghana

    Winfred Adjardjah & Stephen Afonaa-Mensah

  2. Department of Mathematics, Statistics and Actuarial Science, Takoradi Technical University, P. O. Box, 256, Takoradi, Ghana

    John Awuah Addor

  3. Department of Electrical Engineering, École de Technologie Supérieure, Université du Québec, Montreal, Canada

    Andrews A. Okine

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  1. Winfred Adjardjah
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  2. John Awuah Addor
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  3. Stephen Afonaa-Mensah
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  4. Andrews A. Okine
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Correspondence to Winfred Adjardjah.

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Adjardjah, W., Addor, J.A., Afonaa-Mensah, S. et al. QoE aware fuzzy logic-based vertical handover scheme for VLC heterogeneous networks. Multimed Tools Appl (2024). https://doi.org/10.1007/s11042-024-18782-z

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  • DOI: https://doi.org/10.1007/s11042-024-18782-z

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