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This paper proposes an approach to optimize service placement on Fog landscape in the context of the Internet of Things (IoT). A multi-tier fog computing architecture that supports IoT service provision is devised. Based on this architecture, a novel service placement mechanism that optimizes service decentralization on Fog landscape leveraging context-aware information such as location, time, quality...
Multi-level clustering offers the scalability that is essential to large-scale ad hoc and sensor networks in addition to supporting energy-efficient strategies for gathering data. The optimality of a multi-level network largely depends on two design variables: 1) The number of levels, and 2) The number of nodes operating at each level. We characterize these variables within a multi-hop, multi-level...
In recent years, Vehicular Ad hoc Networks (VANETs) has been emerged an enabling technology to provide a wide range of applications for safety and convenience of drivers. However, traditional architecture of VANETs lack of flexibility, scalability, and easy deployment of services. In this context, Software-defined networking (SDN) has emerged as a rapid innovation in the area of networking for both...
This paper presents the high-level architecture (HLA) of the research project DEWI (dependable embedded wireless infrastructure). The objective of this HLA is to serve as a reference for the development of industrial wireless sensor and actuator networks (WSANs) based on the concept of the DEWI Bubble. The DEWI Bubble is defined here as a high-level abstraction of an industrial WSAN with enhanced...
In the last couple of years Software Defined Network (SDN) have come into existence which empowers network operators with more flexibility to manage and program their network. This type of network solves the limitation of legacy networks. Data plane and control planes are separated from each other as a result data plane devices simple act as a packet forwarding device and leaving the decision making...
Ambient information collected by wireless sensor networks (WSNs) (e.g. space, environment or physiological data) is made available to end-user applications via gateways. In situations where infrastructure-based networks are not available, these gateways and end-user applications are usually implemented as distributed entities forming P2P overlays. Enabling the interconnection of these application...
The world's computing infrastructure is increasingly differentiating into self-contained sub-systems (e.g. Internet of Things installations, clouds, VANETs, …), which are post-hoc composed to generate value-added functionality (“systems of systems”). Today, however, such system-of-systems composition is typically carried out in an ad-hoc and infrastructure-dependent manner, with obvious associated...
In this paper, we analyze the throughput of a novel mobile access coordinated wireless sensor network architecture (MC-WSN) under single path and multipath routing. The obtained throughput expressions highlight the trade-off between achieving high throughput performance and improving the network security strength. The results reveal the importance of: (i) minimizing the number of hops in maximizing...
This article presents a future-driven routing architecture for Internet of Things (IoT). This IoT is a novel concept involving a new concept regarding a set of things with the same routing and service polices, denoted by an autonomous system of things (ASoT). In IoT, an ASoT would be connected not only to the others but legacy autonomous systems (ASs) for the Internet in a wide variety of scenarios...
Wireless Sensor Networks (WSNs) are used in many application areas including health, agriculture and gaming. New advances in sensor technology make it pertinent to consider sharing a deployed WSN infrastructure by multiple applications, including applications which are designed after the WSN deployment. For my PhD research I propose a novel WSN virtualization framework that allows multiple users to...
Cloud-based machine-to-machine communications emerge to facilitate services through linkage between cyber and physical worlds. In addition to great challenges in a large network of machine/sensor swarm, effective network architecture involving interconnection of wireless infrastructure and multi-hop ad hoc networking in the machine swarm remains open. Inspired by the small-world phenomenon in social...
To encounter the mounting necessity of radio spectrum, proper utilization of the radio spectrum is must. Cognitive radio practices an open spectrum allocation technique to make efficient utilization of the wireless radio spectrum and reduces the bottleneck on the frequency bands. A robust architecture with suitable communication protocol is a precondition in the deployment of cognitive radio networks...
This paper presents an innovative architecture for the instrumentation layer of a pervasive large-scale information system. State of the art examples already include an instrumentation layer in a grid infrastructure; nontheless these systems were not designed for large-scale ad-hoc networks, rapidly deployed, continuously upgraded, and dynamically reconfigured when the system is on-line. The main...
In this paper, we propose a novel algorithm which combines fuzzy logical control (FLC) and Taguchi method to select the optimal cluster heads from a wireless sensor network (WSN). In a WSN, FLC algorithm is used to select cluster head and to reach the energy consumption balance among all nodes, which can in turn decrease the probability of the early death of the nodes. In addition, the equation of...
Research in the area of Wireless Sensor Networks (WSNs) has become more and more driven by real-world experimental evaluations rather than network simulation. Numerous testbeds of WSNs have been set up in the past decade, often with very much differing architectural design and hardware. The Testbed Management Architecture for Wireless Sensor Networks (TARWIS) presented in this paper provides the most...
In modern world, as the field of communication continues to evolve, Zigbee has become one of the most important standards for wireless Intensive Care Unit networking. Functioning with Wireless-enabled Intensive Care Unit network devices such as sensors and medical appliances is an constituting functionality in Intensive Care Unit gateway system. This paper describes the plan and execution of an operative...
The cloud represents a computing paradigm where scalable virtualized resources are provided ``as a service'' over the Internet. Mobile/wireless clouds of seamlessly integrated wireless networks is the latest technology trend. Moving the ``Test bed as a Service'' notion to the wireless cloud, enables ordering of user slices for experimentation on wireless test beds, scattered across multiple, federated,...
Overlay networks based on the P2P paradigm have been successfully employed to facilitate reliable data transport. They are used to improve the dependability of traffic flows between end-hosts without changing the underlying infrastructure. By observing connections between neighbours, the overlay can predict the statistical behaviour of the network and can thus select proper routes. In particular,...
The Internet of Things (IoT) is the paradigm of inter connecting heterogeneous devices which are distributed globally and will be a part of the future Internet. Wireless Sensor Networks (WSN) are one of the integral classes of networks in the IoT. One of the major challenges to achieve IoT is to integrate and manage large heterogeneous networks. Autonomic network management system is the need of the...
With research on Wireless Sensor Networks (WSNs) becoming more and more mature in the past five years, researchers from universities all over the world have set up testbeds of wireless sensor networks, in most cases to test and evaluate the real-world behavior of developed WSN protocol mechanisms. Although these testbeds differ heavily in the employed sensor node types and the general architectural...
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