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In this paper, we consider the energy-efficient coordination of a set of appliances in a smart-building. We introduce a theoretical formulation of the coordination problem and an Integer Linear Programming model for its resolution. Our formalization is complemented by an analysis of the properties and limits of the model. We also define a practical smart-building setting in which our formalization...
Cyber-Physical Systems (CPSs) may fail during runtime on supporting decision making if they are not capable of detecting and correcting their own failures. Thus, it has been proposed that CPSs should be self-aware, context-aware and goal-aware. In this paper we present preliminary results about how an architecture built over the Extensible Messaging and Presence Protocol (XMPP) may implement a distributed...
Programmable Logic Controllers (PLCs) are specialized computing systems for the control and monitoring of distributed industrial devices. Aiming for a highly connected industrial Internet-of-Things (IoT) ecosystem, PLCopen OPC Unified Architecture (UA) specification has been released. This paper presents the implementation and evaluation of a PLCopen OPC-UA software component for industrial control...
The default cache strategy of Content Centric Networking(CCN) is storing at each Content Router (CR) along the deliver path. It is high cache redundancy which causes the performance of CCN degradation. Hence, finding an efficient caching mechanisms is necessary in CCN. We agree that the single attribute can not to adapt to the complex network environment. the MAC considers hop count or distance, node...
Software Defined Networking (SDN) has become a popular paradigm for centralized control in many modern networking scenarios such as data centers and cloud. For large data centers hosting many hundreds of thousands of servers, there are few thousands of switches that need to be managed in a centralized fashion, which cannot be done using a single controller node. Previous works have proposed distributed...
In this paper, we address a novel method to efficiently manage and analyze a large amount of log data. First, we present a new Apache Hive-based data storage and analysis architecture to process a large volume of Hadoop log data, which rapidly occur in multiple nodes. Second, we design and implement three simple but efficient anomaly detection methods. These methods use moving average and 3-sigma...
Heterogeneity in constrained networks and gateways is perhaps one of the single greatest challenges facing end-to-end management of devices and networks in the IoT. Today, the Lightweight M2M (LWM2M) protocol, leveraged on open Internet standards, has become a strong contender for REST-based IoT management. However, significant challenges exist for remote gateway management, particularly for proxies...
The Internet of Things (IoT) enables the connections of billions of devices to the Internet. It is thus very important to effectively manage this huge amount of devices. Among many available device management protocols, Open Mobile Alliance Lightweight M2M (OMA LWM2M) has been adopted by the global M2M standards, ETSI M2M and oneM2M as the standard for device management. However, OMA LWM2M-supported...
This paper proposes an architecture that can optimize inter-VM communication in an NFV environment through the creation of direct channels between virtual machines. Particularly, our prototype can transparently optimize the data transfer between virtual machines running DPDK applications by dynamically recognizing the existence of point-to-point connections in the traffic steering rules, reverting...
This paper introduces XMPP and suggests how this technology might be used to help implement Intercloud communication. It gives an introduction to XMPP and how the architecture fits together as well as a discussion of the services it provides 'out of the box'. It then discusses secondary benefits of the protocol and highlights how XMPP could be an appropriate base protocol for implementing the Intercloud...
The use of cloud computing can increase service efficiency and service level agreements for cloud users, by linking them to an appropriate cloud service provider, using the cloud services brokerage paradigm. Cloud service brokerage represents a promising new layer which is to be added to the cloud computing network, which manages the use, performance and delivery of cloud services, and negotiates...
Currently, an increasing number of initiatives are observed aiming at enriching automation environment with modern Information and Communication Technologies (ICT). The desired solutions should lead to increasing and facilitating interoperability of production systems and their components. To realize this vision, a key component is an open and standardized communication platform. Meanwhile, OPC Unified...
The use of Cloud Computing can increase the service efficiency and Service Level Agreement for cloud users by linking them to the appropriate cloud service provider using cloud services brokerage paradigm. Cloud services brokerage represents a new promising layer to be added to cloud computing network, which manages the use, performance and delivery of cloud services, and negotiates relationships...
LWM2M is an emerging Open Mobile Alliance standard that defines a fast deployable client-server specification to provide various machine to machine services. It provides both efficient device management as well as security workflow for Internet of Things applications, making it especially suitable for use in constrained networks. However, most of the ongoing research activities on this topic focus...
With the evolution of technologies such as WebRTC and telecommunication (Telco) architectures aligned with the latest 3GPP standards, the search for interoperability between traditional and web-oriented endpoints is vital, with new use-cases and multimedia services to be explored. Currently, convergence goes beyond the standards and, as such, its search and the technological obstacles motivate this...
The energy consumption of Cloud computing continues to be an area of significant concern as data center growth continues to increase. This paper reports on an energy efficient interoperable Cloud architecture realized as a Cloud toolbox that focuses on reducing the energy consumption of Cloud applications holistically across all deployments models. The architecture supports energy efficiency at service...
In this article the authors examine the concept of software defined network (SDN). In the beginning there is a short historical background of the ”software defined network” as the scientific and technological concept given, by whom it was introduced and what it means. Substantial attention is paid to the OpenFlow protocol. Further, the authors consider development of SDN technology similarly to ideas...
This paper motivates and describes the introduction of network-aware scheduling capabilities in OpenStack, the open-source reference framework for creating public and private clouds. This feature represents the key for properly supporting the Network Function Virtualization paradigm, particularly when the physical infrastructure features servers distributed across a geographical region. This paper...
By introducing approaches like the “Smart Factory” and the “Internet of Things”, companies try to ready their manufacturing systems for the needs of the future. The aim is to increase the changeability of these systems through intelligent and self-configuring devices. Prerequisite is an appropriate communication capability down to the lowest sensor level, which is, however, difficult to achieve in...
Technical and economic opportunities of cloud computing become the focus for Internet applications and at the same time also for telco support infrastructures and network services. In fact, many telco providers are consolidating their service infrastructures towards converged and all-IP next generation networks providing typical telco services within LTE (and soon 5G) and also fixed network environments,...
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