Author: Raluca Marin-PerianuPublisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
Performance Evaluation of a Cluster-based Service Discovery Protocol for Heterogeneous Wireless Sensor Networks
Author: Raluca Marin-PerianuPerformance Evaluation of Clustering Algorithms in Wireless Sensor Networks (WSN). Energy Efficiency of S-Web and LEACH
Author: Sahil ShollaPublisher: GRIN Verlag
ISBN: 3656930007
Category : Computers
Languages : en
Pages : 41
Book Description
Master's Thesis from the year 2013 in the subject Computer Science - Miscellaneous, grade: -, , course: Master of Technology, language: English, abstract: Wireless Sensor Networks (WSNs) are highly integrated technologies applying sensors, microcontrollers and wireless networks technologies. Wireless sensor networks (WSNs) is a promising technology that has a large spectrum of applications such as, battlefield reconnaissance, border protection and security surveillance, preparing forecasts, severe environment detection, volcano monitoring, disaster management. WSNs operate unattended in harsh environments with limited energy supplies that can’t be practically changed or recharged. Thus energy efficiency is a critical design issue which must be addressed. Clustering plays an effective role in judicious use of dwindling energy resources of the deployed sensor nodes. Nodes are grouped into clusters and a specific designated node, called the cluster head is responsible for collecting data from the nodes in its cluster, aggregating them and sending to the BS, where data can be retrieved later. Besides energy efficiency, clustering has many other advantages like reduced routing overhead, conservation of communication bandwidth, stabilized network topology, network stability etc In this research, we study the energy efficiency of two clustering algorithms, S-Web and LEACH and compare them for network lifetime. Simulation results show that the S-Web clustering mechanism achieves a noticeable improvement in the network lifetime.
Clustering and Routing Protocols for Wireless Sensor Networks
Author: Riham ElhabyanPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
In this thesis, we propose a suite of Evolutionary Algorithms (EA)-based protocols to solve the problems of clustering and routing in Wireless Sensor Networks (WSNs). At the beginning, the problem of the Cluster Heads (CHs) selection in WSNs is formulated as a single-objective optimization problem. A centralized weighted-sum multi-objective optimization protocol is proposed to find the optimal set of CHs. The proposed protocol finds a predetermined number of CHs in such way that they form one-hop clusters. The goal of the proposed protocol is to enhance the network's energy efficiency, data delivery reliability and the protocol's scalability. The formulated problem has been solved using three evolutionary approaches: Genetic Algorithms (GA), Differential Evolution (DE) and Particle Swarm Optimization (PSO) and we assessed each of their performance. Then, a PSO-based hierarchical clustering protocol that forms two-hop clusters is proposed to investigate the effect of the number of CHs on network's energy efficiency. This protocol enhances the WSN's energy efficiency by setting an upper bound on the number of CHs and trying to minimize the number of CHs compared to that upper bound. It also maximizes the protocol's scalability by using two-hop communication between the sensor nodes and their respective CHs. Then, a centralized weighted-sum PSO-based protocol is proposed for finding the optimal inter-cluster routing tree that connects the CHs to the Base Station (BS). This protocol is appropriate when the CHs are predetermined in advance. The proposed protocol uses a particle encoding scheme and defines an objective function to find the optimal routing tree. The objective function is used to build the trade-off between the energy-efficiency and data delivery reliability of the constructed tree. Finally, a centralized multi-objective Pareto-optimization approach is adapted to find the optimal network configuration that includes both the optimal set of CHs and the optimal routing tree. A new individual encoding scheme that represents a joint solution for both the clustering and routing problems in WSNs is proposed. The proposed protocol uses a variable number of CHs, and its objective is to assign each network node to its respective CH and each CH to its respective next hop. The joint problem of clustering and routing in WSNs is formulated as a multi-objective minimization problem with a variable number of CHs, aiming at determining an energy efficient, reliable (in terms of data delivery) and scalable clustering and routing scheme. The formulated problem has been solved using two state-of-the-art Multi-Objective Evolutionary Algorithms (MOEA), and their performance has been compared. The proposed protocols were developed under realistic network settings. No assumptions were made about the nodes' location awareness or transmission range capabilities. The proposed protocols were tested using a realistic energy consumption model that is based on the characteristics of the Chipcon CC2420 radio transceiver data sheet. Extensive simulations on 50 homogeneous and heterogeneous WSN models were evaluated and compared against well-known cluster-based sensor network protocols.
Performance Analysis of Cluster Based Communication Protocols for Energy Efficient Wireless Sensor Networks. Design, Analysis and Performance Evaluation of Communication Protocols Under Various Topologies to Enhance the Lifetime of Wireless Sensor Networks
Author: Fuad G. BajaberPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Sensor nodes are deployed over sensing fields for the purpose of monitoring certainphenomena of interest. The sensor nodes perform specific measurements, process thesensed data, and send the data to a base station over a wireless channel. The base stationcollects data from the sensor nodes, analyses this data, and reports it to the users. Wireless sensor networks are different from traditional networks, because of thefollowing constraints. Typically, a large number of sensor nodes need to be randomlydeployed and, in most cases, they are deployed in unreachable environments; however, the sensor nodes may fail, and they are subject to power constraints. Energy is one of the most important design constraints of wireless sensor networks. Energy consumption, in a sensor node, occurs due to many factors, such as: sensing theenvironment, transmitting and receiving data, processing data, and communicationoverheads. Since the sensor nodes behave as router nodes for data propagation, of theother sensor nodes to the base station, network connectivity decreases gradually. Thismay result in disconnected sub networks of sensor nodes. In order to prolong thenetwork?s lifetime, energy efficient protocols should be designed for the characteristicsof the wireless sensor network. Sensor nodes in different regions of the sensing field cancollaborate to aggregate the data that they gathered. Data aggregation is defined as the process of aggregating the data from sensor nodes toreduce redundant transmissions. It reduces a large amount of the data traffic on thenetwork, it requires less energy, and it avoids information overheads by not sending allof the unprocessed data throughout the sensor network. Grouping sensor nodes intoclusters is useful because it reduces the energy consumption. The clustering techniquecan be used to perform data aggregation. The clustering procedure involves the selectionof cluster heads in each of the cluster, in order to coordinate the member nodes. Thecluster head is responsible for: gathering the sensed data from its cluster?s nodes, aggregating the data, and then sending the aggregated data to the base station. An adaptive clustering protocol was introduced to select the heads in the wireless sensornetwork. The proposed clustering protocol will dynamically change the cluster heads toobtain the best possible performance, based on the remaining energy level of sensornodes and the average energy of clusters. The OMNET simulator will be used to presentthe design and implementation of the adaptive clustering protocol and then to evaluateit. This research has conducted extensive simulation experiments, in order to fully studyand analyse the proposed energy efficient clustering protocol. It is necessary for all ofthe sensor nodes to remain alive for as long as possible, since network quality decreasesas soon as a set of sensor nodes die. The goal of the energy efficient clustering protocolis to increase the lifetime and stability period of the sensor network. This research also introduces a new bidirectional data gathering protocol. This protocolaims to form a bidirectional ring structure among the sensor nodes, within the cluster, inorder to reduce the overall energy consumption and enhance the network?s lifetime. A bidirectional data gathering protocol uses a source node to transmit data to the basestation, via one or more multiple intermediate cluster heads. It sends data throughenergy efficient paths to ensure the total energy, needed to route the data, is kept to aminimum. Performance results reveal that the proposed protocol is better in terms of: itsnetwork lifetime, energy dissipation, and communication overheads.
Design and Performance Evaluation of Service Discovery Protocols for Vehicular Networks
Author: Kaouther AbrouguiEnergy-effecient Cluster-based Service Discovery in Wireless Sensor Networks
Author: Raluca Marin-PerianuInformation Networking. Towards Ubiquitous Networking and Services
Author: Teresa VazãoPublisher: Springer
ISBN: 3540895248
Category : Computers
Languages : en
Pages : 858
Book Description
This volume contains the set of revised selected papers presented at the 21st International Conference on Information Networking (ICOIN 2007), which was held in Estoril, Portugal, January 23–25, 2007. The conference series started under the name of Joint Workshop on Computer Communications, in 1986. At that time, it constituted a technical meeting for researchersand engineers on - ternet technologies in East Asian countries, where several technical networking issues were discussed. In 1993, the meeting was reorganized as an international conference known as ICOIN. Recent conferences were held in Sendai, Japan (2006),Jeju,Korea(2005),Pusan,Korea(2004),Jeju,Korea(2003),Jeju,Korea (2002), Beppu City, Japan (2001), Hsin-chu, Taiwan (2000), and Tokyo, Japan (1999). In 2007, for the ?rst time since its creation, ICOIN took place outside Asia, and we were very pleased to host it in Portugal. ICOIN 2007 was or- nized by INESC-ID and IST/Technical University of Lisbon (Portugal) with the technical co-sponsorship of IEEE Communications Society and IEEE Portugal Section-Computer Society Chapter, in cooperation with the Order of Engineers CollegeofInformaticsEngineering(Portugal),IPSJ(InformationProcessing- ciety of Japan), KISS (Korea Information Science Society), and Lecture Notes in Computer Science (LNCS), Springer, Germany. The papers presented in this volume were selected in two stages: 1) revi- ing and selection for the ICOIN program and 2) on-site presentation review by session chairs or by program committee chairs.
Performance modelling of energy efficient routing protocols for wireless sensor networks
Author: Nauman IsrarSensor Technology: Concepts, Methodologies, Tools, and Applications
Author: Management Association, Information ResourcesPublisher: IGI Global
ISBN: 1799824551
Category : Technology & Engineering
Languages : en
Pages : 1618
Book Description
Collecting and processing data is a necessary aspect of living in a technologically advanced society. Whether it’s monitoring events, controlling different variables, or using decision-making applications, it is important to have a system that is both inexpensive and capable of coping with high amounts of data. As the application of these networks becomes more common, it becomes imperative to evaluate their effectiveness as well as other opportunities for possible implementation in the future. Sensor Technology: Concepts, Methodologies, Tools, and Applications is a vital reference source that brings together new ways to process and monitor data and to put it to work in everything from intelligent transportation systems to healthcare to multimedia applications. It also provides inclusive coverage on the processing and applications of wireless communication, sensor networks, and mobile computing. Highlighting a range of topics such as internet of things, signal processing hardware, and wireless sensor technologies, this multi-volume book is ideally designed for research and development engineers, IT specialists, developers, graduate students, academics, and researchers.
Network-Based Information Systems
Author: Tomoya EnokidoPublisher: Springer
ISBN: 3540745734
Category : Computers
Languages : en
Pages : 556
Book Description
This book constitutes the refereed proceedings of the First International Conference on Network-Based Information Systems, NBIS 2007, held in Regensburg, Germany, September 2007 in conjunction with Dexa 2007. It covers recommender systems, business process / design aspects, mobile commerce, security and e-payment, Web services computing / semantic Web, e-negotiation and agent mediated systems, and issues in Web advertising.