论文标题
关于虚拟化铁路信号的时间隔离评估作为服务系统
On Temporal Isolation Assessment in Virtualized Railway Signaling as a Service Systems
论文作者
论文摘要
铁路信号系统在不同的安全水平上提供了许多关键功能，以正确实施整个运输生态系统。如今，我们目睹了这种混合批判性系统中云和虚拟化技术的日益使用，其主要目标是降低成本，提高可靠性，同时提供编排功能。不幸的是，虚拟化包括评估时间隔离的几个问题，这对于像EN50128这样的安全相关标准至关重要。在这篇简短的论文中，我们设想利用XEN（例如Xen）的通用管理程序的实时风味来构建铁路信号作为未来的服务（RSAAS）系统。我们提供了初步背景，强调了对时间隔离的系统评估，以证明在安全至关重要的环境中使用通用实用程序的可行性。
Railway signaling systems provide numerous critical functions at different safety level, to correctly implement the entire transport ecosystem. Today, we are witnessing the increasing use of the cloud and virtualization technologies in such mixed-criticality systems, with the main goal of reducing costs, improving reliability, while providing orchestration capabilities. Unfortunately, virtualization includes several issues for assessing temporal isolation, which is critical for safety-related standards like EN50128. In this short paper, we envision leveraging the real-time flavor of a general-purpose hypervisor, like Xen, to build the Railway Signaling as a Service (RSaaS) systems of the future. We provide a preliminary background, highlighting the need for a systematic evaluation of the temporal isolation to demonstrate the feasibility of using general-purpose hypervisors in the safety-critical context for certification purposes.
