动态拓扑的端到端截止日期

Victor Millnert, J. Eker, Enrico Bini
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引用次数: 3

摘要

尽管科学界和资助机构具有创造力,但物联网、WSN、云、边缘、雾和雾背后的底层计算模型基本上是相同的;动态互联的计算节点,形成一个处理能力和连通性随时间变化的系统。在这样的系统之上,我们考虑需要数据包沿着路径流动并遵守端到端截止日期的应用程序。该应用程序模型是由控制和自动化系统以及电信系统驱动的。挑战在于,在允许节点和应用程序加入或离开时,要保证端到端的最后期限。在某种程度上,主流的、自然的方法是放松约束的严格性(例如,使用概率保证、软截止日期)。在本文中,我们采用了一种不同的方法,将端到端截止日期作为硬约束,而不是部分地限制节点和应用程序离开和加入的自由。我们提出了一个理论框架来建模这样的系统,并证明了最后期限总是被尊重的。
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End-To-End Deadlines over Dynamic Topologies
Despite the creativity of the scientific community and the funding agencies, the underlying model of computation behind IoT, WSN, cloud, edge, fog, and mist is fundamentally the same; Computational nodes which are dynamically interconnected to form a system in where both processing capacity and connectivity may vary over time. On top of such a system, we consider applications that need packets to flow along a path and adhere to end-to-end deadlines. This application model is motivated by both control and automation systems, as well as telecom systems. The challenge is to guarantee end-to-end deadlines when allowing nodes and applications to join or leave.The mainstream, and to some extent natural, approach to this is to relax the stringency of the constraint (e.g. use probabilistic guarantees, soft deadlines). In this paper we take a different approach and keep the end-to-end deadlines as hard constraints and instead partially limit the freedom of how nodes and applications are allowed to leave and join. We present a theoretical framework for modeling such systems along with proofs that deadlines are always honored.
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