Photonics-Enabled LiFi Framework for Ultra-Low-Latency V2X and VANET Applications

In this paper, we discuss a photonics-based LiFi system that can be used to provide ultra-low-latency wireless services to new Vehicle-to-Everything (V2X) and Vehicular Ad Hoc Network (VANET) services. The traditional RF-based V2X systems are usually limited because of spectrum congestion, interference and variability in latency that makes them less applicable to safety-critical vehicular services. With the proposed architecture, modulation bandwidth, a relationship between reliability and responsiveness at the link, and dynamic mobility are improved under the dynamic mobility requirements, and influenced by high-speed photonic modulators and visible-light communication channel. The system model is thoroughly designed which involves the behavior of the optical channel and the mobility restrictions of the vehicle in addition to an optimized system of handover which fits rapidly moving conditions. Findings of the simulations show that end-to-end latency is under one milliseconds, and both throughput is enhanced, and the performance is stable irrespective of how crowded the traffic is. The results support the idea that photonics-aided LiFi can be used as the complementary technology to current RF systems and provide the next-generation intelligent transportation, cooperative driving, and situational awareness.

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