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Efficiency analysis of cellular/LiFi traffic offloading.

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    Area of Science:

    • Wireless communication networks
    • Optical wireless communication

    Background:

    • Future networks face high demands for high-speed connectivity.
    • Data offloading is a key strategy for managing network load efficiently.
    • Integrating cellular and Light Fidelity (LiFi) networks offers a promising solution.

    Purpose of the Study:

    • To investigate and quantify offloading efficiency in a hybrid cellular/LiFi network.
    • To compare the performance of opportunistic versus delayed data offloading strategies.
    • To analyze the impact of various network parameters on offloading efficiency.

    Main Methods:

    • A hybrid cellular and LiFi network model was developed.
    • Two offloading scenarios were simulated: opportunistic and delayed.
    • Key parameters investigated include user density, mobility, signal blocking, and channel characteristics.
    • LiFi channel simulations were performed using Zemax software.

    Main Results:

    • Delayed offloading demonstrated significantly higher efficiency, achieving up to 60% of total traffic offloaded.
    • Opportunistic offloading achieved a maximum efficiency of 18%.
    • User density, mobility, signal blocking, and channel characteristics influenced offloading performance.

    Conclusions:

    • Delayed offloading is a superior strategy for maximizing data offloading in cellular/LiFi networks.
    • The findings provide valuable insights for designing efficient hybrid wireless networks.
    • Optimizing offloading strategies is crucial for meeting future high-speed connectivity demands.