Collaborative Research: CT-ISG: Fault-Tolerant and Secure Infrastructure for Time Critical Embedded Systems

嵌入式系统环境中的时间关键型应用通常具有严格的服务质量（QoS）和时序要求，即使在出现故障和拒绝服务（DoS）攻击的情况下，也需要满足这些要求，以确保正常运行和可靠性。然而，实现这一目标，带来了一系列的关键挑战，这些挑战是独特的或根本不同的，从传统的无线传感器和ad-hoc网络中遇到的。 虽然在与微传感和致动相关的具体技术方面正在取得重大进展，但在为时间关键型应用大规模部署容错和安全的嵌入式无线系统方面仍然存在巨大障碍。该合作研究项目在三个层面上进行综合研究：（i）基于奖励的，值得信赖的QoS模型，（ii）安全，容错路由和数据转发，以及（iii）容错数据访问和管理。拟议方法的重点将放在系统不同组成部分和层次之间的相互关系以及随之而来的研究和设计问题上。 该项目正在开发全面的分析框架，以确定故障发生或系统受到拒绝服务攻击时的性能保证界限。为了追求可靠、健壮和安全的嵌入式系统，本研究还关注安全和容错的路由和数据管理，该项目正在开发可扩展和节能的路由协议，可以容忍设备故障和瞬时网络过载。该项目还在为数据汇总和管理制定动态和适应性的基于风险的计划。这项工作跨越了几个研究领域：分布式和嵌入式实时系统，传感器网络，安全和信息处理。该项目旨在通过广泛的时间紧迫的应用程序产生影响，例如：无处不在的医疗保健，基础设施保护和国土安全以及实时环境监测。该项目旨在促进跨领域的研究，包括来自计算机科学，信息科学和工程的学生的多元化群体。成果和软件工具通过项目网站免费传播。

Mosse-WuTime-critical applications in embedded systems environments often have stringent quality of service (QoS) and timing requirements that need to be met to ensure proper operation and dependability, even in the presence of failures and Denial of Service (DoS) attacks. Achieving this goal, however, brings about a host of critical challenges which are unique or fundamentally different from those encountered in traditional wireless sensors and ad-hoc networks. While significant progress is being made in specific technologies associated with micro-sensing and actuation, formidable barriers remain to large-scale deployment of fault-tolerant and secure embedded wireless systems for time-critical applications. This collaborative research project is pursuing integrated research at three levels: (i) reward-based, trustworthy QoS models, (ii) secure, fault-tolerant routing and data forwarding, and (iii) fault-tolerant data access and management. The emphasis of the proposed methodologies will be on the inter-relationships between different components and layers of the system and the consequent research and design issues. This project is developing comprehensive analytical framework to establish bounds on performance guarantees when failure occurs or when the system is under denial of service attacks. In pursuit of dependable,robust and secure embedded systems, this research also focuses on secure and fault-tolerant routing and data management.The project is developing scalable and energy-efficient routing protocols that can tolerate both device failures and transient network overload. The project also is developing dynamic and adaptive risk-based schemes for data aggregation and management. The effort spans several research areas: distributed and embedded real-time systems, sensor networks, security, and information processing. The project aims for impact through a wide range of time-critical applications such as: ubiquitous and pervasive health care, infrastructure protection and homeland security, and real-time environment monitoring. The project seeks to stimulate cross-area research and include a diverse group of students from Computer Science, Information Science, and Engineering. Results and software tools are freely disseminated through the project website.