Review of Handover in Li-Fi and Wi-Fi Networks

Light Fidelity (Li-Fi) is a visible light communication technology that uses light as a medium to provide high-speed data communication. Since the spectrum utilized by Li-Fi does not overlap with the spectrum utilized by Radio Frequency (RF) spectrum, they can be hybridized so as to improve quality of service and quality experience (Qoe) of the users. However in a hybrid Li-Fi/Wireless-Fidelity (Wi-Fi) network, movement of users may prompt frequent handover which may degrade the system throughput. Therefore there is the need to mitigate frequent handover in a hybrid Li-Fi/Wi-Fi network. This paper surveys various types of handovers that could be used to mitigate unnecessary handovers in a hybrid Li-Fi/Wi-Fi network. This paper also focuses on the working principles of Li-Fi, its applications, modulation techniques and areas of applications.