Optimization and Modeling of High-speed Flying Train Communication System Based on Colored Petri Nets

As a new transportation form, High-speed Flying Train (HFT) has received considerable attention in recent years. In this paper, the communication system is optimized according to the characteristics of HFT, which play a crucial role in their operation. Specifically, a modified communication system based on dual-redundant automatic Ethernet and 5G wireless communication is proposed. In this scheme, dual-redundant automatic Ethernet is used as the terrestrial core network to improve transmission efficiency, and 5G wireless communication network is utilized as the vehicle-to-ground communication system to address the problem of data transmission delay in high-speed operation. Moreover, colored Petri nets (CPN) are applied to model the communication system structure in the scheme hierarchically. Transmission reliability and real-time performance are evaluated using frame transmission loss and transmission delay. Finally, the simulation results verify that the optimization scheme can improve the real-time performance and reliability of the communication system.