Terahertz Enabled Use Cases for Smart Mobility towards B5G and 6G Communications

The emerging technology terahertz (THz) communication is envisioned to provide high-data-rate links. For the design of THz communication system, an accurate channel model is unavoidable. As a typical representative of deterministic models, ray-tracing (RT) method based on optical theory is relevant to the physical properties of THz waves. In this study, with the consideration of real-world use, two cases are made for vehicle-to-infrastructure (V2I) and drone communications. These two cases represent two ends of THz mobile communications from terrestrial to aerial one. The V2I channel is analyzed with the aid of RT. The Doppler effect caused by moving vehicles will be a great challenge for the system design. As for the drone communications, the channel model should consider three-dimensional characteristics, including scenario, velocity, trajectory, antenna pattern, etc. The provided brief survey on the two most relevant scenarios for smart mobility will be foundation for the THz channel modeling.