With the increasing adoption of industrial Ethernet in train communication network (TCN), the limitations of insufficient reliability and incompatibility between different Ethernet technologies have become increasingly apparent. To address these challenges, time‐sensitive networking (TSN) has emerged as a solution, enabling multi‐network convergence and enhancing data transmission determinism and reliability through techniques such as frame replication and elimination for reliability (FRER). However, the utilization of these policies will adversely affect schedulability due to increased network load. To address the issue of link failures in TCN topologies, a routing policy based on faulty link diagnosis is proposed. The proposed policy utilizes an improved max‐min ant system (IMMAS) for diagnosing and resolving faulty links. Furthermore, a routing optimization algorithm is introduced to enhance transmission reliability by planning alternative paths for traffic. To evaluate the performance of the proposed routing algorithm, multiple sets of test cases are conducted separately under different failure scenarios to compare them with other routing policies. The results demonstrate the superior reliability of the proposed routing policy over alternative approaches. Additionally, the traffic utilizing the proposed routing policy show improved schedulability following integer linear programming (ILP) scheduling. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

中文翻译：

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基于故障链路诊断的列车通信网络交通路由可靠性优化

随着工业以太网在列车通信网络（TCN）中的越来越多的采用，不同以太网技术之间可靠性不足和不兼容的局限性变得越来越明显。为了应对这些挑战，时间敏感网络（TSN）作为解决方案应运而生，通过帧复制和可靠性消除（FRER）等技术实现多网络融合并增强数据传输的确定性和可靠性。然而，由于网络负载增加，这些策略的利用将对可调度性产生不利影响。针对TCN拓扑中的链路故障问题，提出一种基于故障链路诊断的路由策略。所提出的策略利用改进的最大最小蚂蚁系统（IMMAS）来诊断和解决故障链接。此外，还引入了路由优化算法，通过规划流量的替代路径来增强传输可靠性。为了评估所提出的路由算法的性能，在不同的故障场景下分别进行多组测试用例，以将它们与其他路由策略进行比较。结果表明，所提出的路由策略比其他方法具有更高的可靠性。此外，利用所提出的路由策略的流量在整数线性规划（ILP）调度之后显示出改进的可调度性。 © 2024 日本电气工程师协会和 Wiley periodicals LLC。