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Technological advancement of Industrial Control Systems (ICS) and control systems automation over the past decade has brought greater interconnections of the control components. Modern control communication systems such as ModbusTCP are based on open standards that leverage Ethernet to allow interoperability between solutions from different vendors. The enhanced exchange of information has, as a side...
Teaching is one of the essential elements, which impact the learning process. An effective teaching happens only if the students can hear and grasp what is taught clearly. In a classroom, teachers' voice quality will greatly affect the students' comprehensibility and interest in learning. So teachers should make sure that every student in the classroom could hear the voice in clear, precise and audible...
Software-Defined Networks (SDN) are constantly evolving and so is their software. One of the key advantages of SDN over traditional networks is the ability to rapidly develop and deploy new features. However, updating them often requires restarting the SDN controller and causes network downtime. In addition to such planned updates, unforeseen, accidental downtime is also a risk for SDN networks. While...
This paper defined a unified architecture of IoT system, on which IoT node model, virtual things, the basic service of things and overall hierarchical model of services had been described. IoT nodes must be connected directly to Internet and provide basic services of things in this architecture, and started from the base services which were compatible with Internet applications system of SOA, built...
Without breaking the original industrial automation system architecture, it is an important research topic to apply cloud computing to the current automation system in order to realize the function of industrial big data processing, optimizing control and intelligent decision making on the cloud platform. An industrial cloud experimental platform architecture based on OpenStack is proposed in this...
The emerging Fog Computing paradigm provides an additional computational layer that enables new capabilities in real-time data-driven applications. This is especially interesting in the domain of Smart Grid as the boundaries between traditional generation, distribution, and consumer roles are blurring. This is a reflection of the ongoing trend of intelligence distribution in Smart Systems. In this...
Technological advancement of Industrial Control Systems (ICS) and control systems automation over the past decade has brought greater interconnections of the control components. Increased interconnection provides end users with more information which facilitates improved system reliability. Modern control communication systems such as ModbusTCP are based on open standards that leverage Ethernet to...
The efficiency and maintainability of fault tolerance mechanisms in a computer system has typically not been a major topic of concern, mostly because fault tolerance is a non-functional system requirement. This paper proposes a Holistic Fault Tolerance architecture, based on a centralised fault tolerance management, with related functionality distributed across the entire system. The most suitable...
AT&T is embarking on an exciting journey to revolutionize its network by transforming itself into a software company running the largest and most intelligent programmable cloud on the planet. Indeed, the network of Domain 2.0 (D2) will be intelligent software systems and applications operating on general-purpose commodity hardware [1]. This transformation will not only drive down CAPEX, OPEX and...
In this paper a novel architecture for control system design in networked environment is presented, where the consistent distribution of the control system functionalities is proposed to the dedicated time-aware system components. The sensing, actuating and algorithmic functionalities are uniformly encapsulated into the passive system components utilized as a network-accessible service groups. Service...
Measurement and tracking have crucial roles in Software-Defined Networks (SDNs). Unfortunately, most of procedures and techniques to perform measurements and monitoring tasks are implemented in software at network end-hosts. Despite the large use, a software based approach generates imprecision, high costs, and makes monitoring more difficult. In this paper, we extend OpenFlow switch to implement...
In this paper, we propose a disaster-aware smart routing scheme for highly-available information storage systems. Our proposed scheme is based on the concept of Symbiotic Computing to recognize disaster status in Real Space, and provides appropriate routes form Digital Space dynamically. This realizes effective data transmission considering disaster situation and its time variation. We have designed...
The recent networking paradigm changes towards virtualization and the softwareisation of network functions, controls, applications are expected to improve cost efficiency, control accuracy, and deployment flexibility. However, the issue of reliability in softwareisation architecture becomes more complex and poses many critical challenges on the existing network reliability mechanisms in order to achieve...
Software Defined Networking (SDN) is new networking architecture with the centralized control mechanism. SDN has been proven successful in improving not only network performance but also network security. However, the centralized control in SDN architecture incurs new security vulnerability. In particular, the UDP flooding attack can be easily launched and causes serious packet transmission delay,...
Control theory and SDN (Software Defined Networking) are key components for NFV (Network Function Virtualization) deployment. However little has been done to use a control-theoretic approach for SDN and NFV management. In this demo, we describe a use case for NFV management using control theory and SDN. We use the management architecture of RINA (a clean-slate Recursive InterNetwork Architecture)...
Single controller implementation of SDN has many problems related to single points of failure, computational complexity growth, reliability and scalability. To solve these problems, multi-controller implementation of Software Defined Network has been introduced. Multiple controller implementation of the SDN control plane for large networks environment solves the scalability and reliability issues...
A Cyber-Physical System (CPS) is defined as integrations of computation and physical processes. In CPS, small embedded devices are used to monitor and manage the physical process. Because of these physical devices with limited resources, it is impossible to perform complex calculations and processing. In view of this situation, we apply Service-oriented Architecture (SOA) concepts to CPS, called a...
Virtualization of wireless networks has received more and more research attention. In order to reduce the investment of mobile network operators and to improve the network performance, LTE (Long Term Evolution) virtualization is one important study cases in the scope of wireless virtualization. To investigate the advantages of virtualization on the LTE air interface. As we know Cloud computing is...
Home surveillance systems, intelligent or smart homes are basically built to monitor and support ill and/or disabled persons in their independent living, possibly as part of the medical attendance. Intelligent Space or iSpace is a new kind of computing system aiming at improving the environments of humans, creating a natural and easy to use solution. From this two concepts a new family of applications,...
Network-as-a-Service (NaaS) is a cloud-based service model that offers on-demand network connectivity and the provisioning and management of network services. However, the actual orchestration of dynamically allocating underlying resources to customer requirements is not trivial. In this paper, we propose an SDN-based approach to support the NaaS model. We implement a proof-of-concept (PoC) on a physical...
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