Cellular V2X Transmission for Connected and Autonomous Vehicles Standardization, Applications, and Enabling Technologies

Connected and autonomous vehicles (AVs) will need to communicate significant amounts of data to provide various safety, navigation and infotainment services to consumers. This article discusses the recent technological advances and standardization efforts in Cellular Vehicle-to-Everything (C-V2X) technologies that are being developed to support the ultra-reliable, low latency, and high throughput required by AVs. The key V2X applications and their communication requirements, with an emphasis on video delivery, are then presented. In conclusion, we highlight the primary challenges of V2X network design, and present several future research directions including the role of network intelligence to facilitate large-scale deployments of V2X applications.