Discussion on a Collaborative Control Scheme for Metro 5G Wireless Communication and CBTC Signaling
地铁5G无线通信与CBTC信号协同管控方案探讨

摘要

在轨道交通向高密度、高速度及智能化方向发展的背景下，第五代移动通信技术（5G）与基于通信的列车控制 系统（CBTC）的深度融合已成为提升运营效能的关键路径。本文针对两者融合过程中面临的频谱干扰、时延抖动、移 动性管理及安全可靠性等核心难题，深入剖析了异构网络间的耦合机理。通过构建基于网络切片的资源隔离架构，提 出了一种动态优先级的协同调度策略，实现了控制业务与感知业务的差异化保障。研究重点探讨了隧道复杂电磁环境 下的信号传播特性与抗干扰机制，设计了具备故障自愈能力的容错控制模型，并构建了端到端的纵深防御体系。该方 案旨在解决高并发场景下通信链路的稳定性瓶颈，为地铁信号系统的安全可靠运行提供理论依据与技术支撑，推动城 轨交通向智慧化运维转型。 

Abstract

Against the background of rail transit development toward higher density, higher speed, and greater intelligence, the deep integration of fifth-generation mobile communication technology (5G) and communication-based train control (CBTC) systems has become a key path for improving operational efficiency. Focusing on core challenges in the integration process, such as spectrum interference, latency jitter, mobility management, safety, and reliability, this paper deeply analyzes the coupling mechanism between heterogeneous networks. By constructing a resource isolation architecture based on network slicing, a collaborative scheduling strategy with dynamic priorities is proposed to achieve differentiated guarantees for control services and sensing services. The study focuses on the signal propagation characteristics and anti-interference mechanisms in the complex electromagnetic environment of tunnels, designs a fault-tolerant control model with fault self-healing capability, and establishes an end-to-end defense-in-depth system. The proposed scheme aims to solve the stability bottleneck of communication links in high-concurrency scenarios, provide theoretical basis and technical support for the safe and reliable operation of metro signaling systems, and promote the transformation of urban rail transit toward intelligent operation and maintenance.