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SD-CPS: software-defined cyber-physical systems. Taming the challenges of CPS with workflows at the edge
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Journal Article
SD-CPS: software-defined cyber-physical systems. Taming the challenges of CPS with workflows at the edge
2019
Overview
A cyber-physical system (CPS) is a smart mechanical environment, developed by an amalgamation of computation, networking, and physical dimensions. Each CPS consists of a network of devices, often limited in computing, storage, or bandwidth resources. Moreover, the frequent small-scale communications between the various counterparts of CPS require data and computation of CPS to be deployed close to each other, with the ability to support micro-executions. Due to these operational requirements, CPS faces several inherent challenges, uncommon to a traditional computational environment. In this paper, we describe software-defined cyber-physical systems (
SD-CPS
), a CPS framework built by extending and adapting the design principles of software-defined networking (SDN) into CPS. We realize the support for CPS operation as a workflow of microservices, possibly in continuous or cyclic execution.
SD-CPS
coordinates each CPS execution step, performed by a microservice, through an extended SDN controller architecture. By creating, placing, deploying, migrating, and managing the computation processes of CPS as service workflows at the edge,
SD-CPS
orchestrates the entire lifecycle of the CPS effectively and efficiently.
SD-CPS
thus addresses the general challenges of CPS, concerning modeling, development, performance, management, communication and coordination, scalability, and fault-tolerance, through its software-defined approach. Our evaluations highlight the efficiency of the
SD-CPS
framework and the scalability of its SDN controller to manage the complex CPS environments.
Publisher
Springer US,Springer Nature B.V
Subject
