【摘要】 以太网拥有通信速率快、成本低廉的优势,是未来列车通信网络的大势所趋。在兼容传统以太网通信协议的基础上,针对以太网应用在列车通信网络的现有问题,提出了一种新的交换机综合分级调度算法,以降低以太网数据,尤其是实时数据的传输时延。将综合分级调度算法与传统的先来先服务调度算法进行比较,运用网络演算理论计算列车实时数据的端到端时延的上界,并通过网络仿真技术搭建网络通信模型,分析并验证上述调度算法的可行性。更多还原

【Abstract】 Given the advantages of Ethernet in terms of high transmission rate and low cost,train communication network based on industrial Ethernet is the tendency. To lower the delay of data communication,especially real-time data,the paper proposes a new comprehensive scheduling algorithm that contraposes the problem of Ethernet communication under the premise of the compatible traditional Ethernet protocol. The paper made a comparison between the comprehensive scheduling algorithm and First Come First Served(FCFS) scheduling algorithm. The feasibility of the comprehensive scheduling algorithm was verified by end-to-end delay limit calculation using network calculus theory,and train communication network model using network simulation technology.更多还原