Cellular-V2X Communications for Platooning: Design and Evaluation.

Area of Science:

• Intelligent Transportation Systems
• Wireless Communications
• Autonomous Driving

Background:

• Platooning enhances fuel efficiency and safety through synchronized autonomous vehicle movement.
• Existing platooning research primarily uses IEEE 802.11p, but cellular vehicle-to-everything (C-V2X) offers advanced capabilities.
• 3GPP-specified scheduled mode for C-V2X sidelink communication requires novel resource management strategies.

Purpose of the Study:

• To analyze the performance of dynamic scheduling for C-V2X platooning under 3GPP scheduled mode.
• To compare two dynamic scheduling implementations: sequential and simultaneous modes with spatial frequency reuse.
• To identify key design choices and C-V2X parameters impacting platooning performance.

Main Methods:

• System-level simulations were employed to evaluate platooning performance.
• Two dynamic scheduling approaches were investigated: sequential and simultaneous modes.
• Performance was analyzed based on reliability and latency under varying network loads.

Main Results:

• The simultaneous dynamic scheduling mode significantly reduces latency in vehicle controller update cycles.
• Both sequential and simultaneous modes were evaluated for feasibility and performance.
• Key C-V2X parameters influencing data exchange reliability and latency were identified.

Conclusions:

• The simultaneous mode is a viable and effective strategy for C-V2X platooning, particularly for high-density scenarios.
• Dynamic scheduling in C-V2X offers a promising alternative to traditional methods for platooning communication.
• Optimized C-V2X configurations are crucial for achieving reliable and low-latency platooning.