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Secure communications based train control (CBTC) operations.

机译：基于安全通信的列车控制（CBTC）操作。

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摘要

Communications Based Train Control (CBTC) provides positive train separation, over speed protection, and protection for roadway workers. Current system designs do not include trust management systems to provide support for security, rendering CBTC communications vulnerable to malactors. Traditional train control methods and the architecture of CBTC systems are studied to determine specific vulnerabilities of CBTC systems and the associated system security requirements. The security requirement are then used to derive an appropriate trust management system. Existing work on safe cross domain dispatch operations has not considered the impact of these trust management systems on allowable traffic delays and system velocity or related them to train dynamics. A relationship between train dynamics and trust management delay is presented to allow engineering estimates of the practicality of potential trust management systems to support rail operations while preventing collisions. An algorithm for the safe and secure scheduling of trains through the interchange point between is provided. The algorithm supports positive train separation under a worst-case traffic scenario, allowing for safe and secure scheduling while reducing traffic delays. The approach presented is illustrated by an example, and is independent of the specific security management, CBTC, and dispatch systems.
机译：基于通信的列车控制（CBTC）提供了积极的列车分隔，超速保护以及对道路工人的保护。当前的系统设计不包括提供安全支持的信任管理系统，从而使CBTC通信容易受到恶意攻击。研究了传统的火车控制方法和CBTC系统的体系结构，以确定CBTC系统的特定漏洞以及相关的系统安全要求。然后，将安全要求用于导出适当的信任管理系统。现有的有关安全跨域调度操作的工作尚未考虑这些信任管理系统对允许的流量延迟和系统速度的影响，也没有考虑将它们与动态训练相关。提出了列车动力学与信任管理延迟之间的关系，以便对潜在的信任管理系统的实用性进行工程估算，以支持铁路运营同时防止碰撞。提供了一种用于通过列车之间的交换点来安全，可靠地调度列车的算法。该算法支持在最坏情况下的交通状况下进行积极的火车分离，从而在减少交通延误的同时实现安全可靠的调度。所提供的方法通过示例进行说明，并且与特定的安全管理，CBTC和调度系统无关。

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