Performance Assessment Of Train-to-Train Communication With Highspeed Railway Based On Stochastic Network Calculus

With the rapid development of high-speed railway and the emergence of innovative technologies,the train control system needs to develop forward.The European Next Generation Train Control Research Team has given explanations and future development directions in all aspects of the train control system,but the specific structure and framework are blank,such as what kind of communication technology is used and what kind of technology is used and train positioning technology,reduceing the trackside equipment,etc.,are given only some reference suggestions,and have not been truly used and implemented.Train-to-train communication is a new technology in the next generation that can communicate with the front and rear trains each other.This type of communication can reduce the time delay when interacting with ground equipment and can also reduce construction costs.So far,train-to-train communication technology has been applied and researched only on CBTC,and little research on high-speed railways.How to apply a new generation of train-totrain communication technology on CTCS is also a research hotspot and a difficult point.This thesis begins with the research of the next-generation train control system,proposes the architecture diagram of the next generation train control system,and discusses the new train-to-train communication schematic based on LTE-R.Since stochastic network calculus has high practicality in network traffic analysis,this thesis also uses two stochastic network calculus algorithms as theoretical tools to study the train-to-train communication model and wireless communication model of the next-generation train control system.With the MGF(Moment Generating Function)and the CCDF(Complementary Cumulative Distribution Function)network calculation algorithm,an appropriate model is established for the service arrival data flow,the train movement model and the service rate of the adaptive coding modulation,and the X2 interface handover is proposed.Probability analysis and adaptive mvalue acquisition algorithm,and analysis of its arrival curve and service curve.The model analysis and time delay analysis of the data transmitted through the core network and X2 interface are respectively performed,and the time delay boundary and system performance are obtained through MATLAB simulation.The feasibility of the new train-to-train communication system of LTE-R is verified from the time delay and provide some reference for the next generation of train control and train-to-train communication system.