Hybrid LiFi-WiFi Architecture for High-Speed Vehicular Communication in Intelligent Transportation Systems
Аннотация
Intelligent Transportation Systems (ITS) are based on the use of the high speed, low latency, and reliable communication to assist in autonomous driving, safety systems, delivery of infotainment, and traffic coordination. Conventional radiofrequency (RF)-based vehicular communication-related technologies like IEEE 802.11p, WiFi, and novel 802.11bd are affected by spectrum congestion, interference, and the low degrees of throughput that can be achieved with the large density of vehicles. Comparatively, Light Fidelity, or LiFi, an implementation of Visible Light Communication (VLC) offers incredibly high data rates, resistance to RF interference, and inherent security at the cost of depending on the line-of-sight (LOS), and intermittent connectivity due to mobility. This essay proposes a mixed LiFi-WiFi communication system to use in ITS Vehicular-to-Infrastructure (V2I) and Vehicular-to-Vehicle (V2V) communication. The hybrid system dynamically between LiFi and WiFi depending on the availability of LOS, projected conditions of handover, and real-time signal measurements. An extensive mathematical model is created to simulate optical and RF channels and then vehicular mobility situations are simulated. Findings indicate that the hybrid architecture uplifts the throughput, loss by 40 percent, and reliability of the handover over standalone communication systems by up to 65 percent. The work gives a basis on how to incorporate optical wireless communication in future vehicular networks with the 6G ecosystem of ITS.