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Localization awareness is a fundamental requirement in many Internet of Things (IoT) and other wireless sensor applications. The information transmitted by an individual entity or node is of limited use without the knowledge of its location. Research in this area is mostly geared towards multi-hop range-free localization algorithm as that only utilizes connectivity (neighbors) information. This work...
Low-cost technology that can monitor a wide range of environments, Wireless Sensor Network (WSN) has become increasingly common and studies on it have increased a lot. Due to the cost and time required to deploy a WSN in physical environments, the network simulators, such as the popular Network Simulator 2 (NS-2), have been adopted for evaluation of WSNs. NS-2 is a widely accepted and used network...
The Wireless sensor network (WSN) deployment areas in real time environment are often inaccessible and unreliable communication resulting in degradation of network performance. The critical issues in any WSN are QoS and energy. Post deployment, it may not always be feasible to replace the batteries in a WSN. Long hops of transmission maintaining the QoS with more energy consumption results in reduction...
To reduce the cost of network-wide broadcast in wireless sensor networks (WSNs), it's a common practice to establish a connected dominating set (CDS). A lot of algorithms have been proposed to construct CDS, and most of them aim at reducing the size of the created CDS. Existing distributed algorithms require that all nodes exchange announcement messages to acquire local topology in order to construct...
Wireless automation is an emerging field of research that aims at significant savings in installation time and costs of cabling in automation systems, while providing a new level of flexibility for system design, reconfiguration, and agility. Wireless sensor networks (WSNs) are a rather new technology, with its origins tracing back to the early 1980s through the Distributed Sensor Networks (DSNs)...
The autonomous features of wireless sensor network (WSN) and the rapid deployment of smart metering devices have revolutionized the smart grid infrastructures. These developments have driven the WSN-based smart metres for automatic recording, processing and evaluating energy information, and managing efficient energy usage. The smart metres are not limited to monitoring and processing energy information...
The selection of active units is an essential task for sensor networks because it allows to increase the service life of the networks while guaranteeing coverage. In this paper, we propose a fully distributed method for active units selection that automatically adapts to sensors extinction without activating unnecessary idle units. This method relies on both of the use of homology and the discrete...
A fuzzy metric for the Collection Tree Protocol (CTP) algorithm in Wireless Sensor Networks (WSNs) is proposed. This metric incorporates node energy level and congestion along with the traditional link quality parameter used in CTP with an aim of making CTP energy and congestion aware. The performance of the fuzzy metric based CTP is evaluated and compared with the original CTP algorithm, in a TinyOS...
In this paper, we present three network evolution models for generating fault-tolerant and energy- efficient large-scale peer-to-peer wireless sensor networks (WSNs) based on complex networks theory. Being scale-free is one of the intrinsic features of complex networks-based evolution models that generates fault- tolerant topologies. In this work, we argue that fault- tolerant topologies are not necessarily...
Topology control is one of core key factors which can influence performance of wireless-sensor networks (WSN). So how to design topology structure with high reliable and survivability is becoming the important subject on wireless-sensor networks. For the issue, a topology evolution strategy based on scale-free network with energy efficient is proposed. First by clustering algorithm cluster nodes are...
The proposed soft computing tool is developed as a suite of software programs capable of envisaging the evolution within wireless sensor networks (WSN) by accomplishing a series of processes. These processes are: modelling a real problem scenario in computing form, formulating the problem as an optimization problem, evaluating the outcomes and finally, presenting the outcomes in a statistical form...
The energy is a critical resource in Wireless Sensor Networks that impacts on networks lifetime. In this paper, we propose a distributed self-stabilizing algorithm of topology control to preserve energy in case of communications by broadcast. The topology control is achieved by the reduction of the transmission power of the nodes in the network. The self-stabilizing property is a very desirable property...
Within reactive topology control, a node determines its adjacent edges of a network subgraph without prior knowledge of its neighborhood. The goal is to construct a local view on a topology which provides certain desired properties such as planarity. During algorithm execution, a node, in general, is not allowed to determine all its neighbors of the network graph. There are well-known reactive algorithms...
We use cellular automata for simulating topology control algorithms in Wireless Sensor Networks (WSNs). A cellular automaton is a decentralized computing model providing an excellent platform for performing complex computations using only local information. WSNs are composed of a large number of distributed sensor nodes operating on batteries; the objective of the topology control problem in WSNs...
Energy efficient wireless sensor network MAC protocol is one of the most researched areas related to sensor networks. In most of the applications, the sensors are deployed in hundreds and thousands. The need of efficient sharing of resources of the network and conserve energy to boost up the life time are the prime goals. Using actual sensor networks (in case of developing a new algorithm) or experimenting...
As wireless embedded systems become more and more common and used across many application domains there is a need for modeling and design tools to support the deployment process. Although a significant amount of research has been carried out in the area of protocol design, middleware and energy, packaging and embedded systems design, there remains a lack of support tools for designers and system integrators...
Wireless Sensor Networks (WSNs) may be deployed in hostile or inaccessible environments and are often unattended. In these conditions securing a WSN against malicious attacks is a particular challenge. This paper proposes to use formal methods to investigate the security of the INSENS protocol, in respect of its capability to withstand several denial of service attacks. The paper is an extension to...
Sink Scheduling, in the form of scheduling multiple sinks among sink sites to leverage traffic burden, is an effective mechanism for the energy-efficiency of wireless sensor networks (WSNs). Due to the inherent difficulty (NP-hard in general), existing works on this topic mainly focus on heuristic/greedy algorithms and theoretic results remain unknown. In this paper, we fill in the research blank...
In this paper, we study the performance of the Greedy Perimeter Stateless Routing (GPSR) [1] and the Greedy Routing for Maximum Lifetime (GRMax)[2] which is our proposal, in wireless sensor networks in random topology and grid topology wireless sensor network. We decide to compare the performance of GPSR and GRMax in different topology of networks using the same simulation environment. Evaluation...
Topology Control (TC) is a well known technique used in wireless ad hoc and sensor networks to reduce energy consumption. This technique coordinates the decisions of network nodes about their transmission power to save energy, prolong network lifetime, and mitigate MAC-level medium contention, while maintaining network connectivity. In order to ease the implementation and the study in systematic way...
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