Reliability In Wireless Sensor Networks

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Reliability In Wireless Sensor Networks

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Author : Nourhene Maalel
language : en
Publisher:
Release Date : 2014

Reliability In Wireless Sensor Networks written by Nourhene Maalel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.

Over the past decades, we have witnessed a proliferation of potential application domainsfor wireless sensor networks (WSN). A comprehensive number of new services such asenvironment monitoring, target tracking, military surveillance and healthcare applicationshave arisen. These networked sensors are usually deployed randomly and left unattendedto perform their mission properly and efficiently. Meanwhile, sensors have to operate ina constrained environment with functional and operational challenges mainly related toresource limitations (energy supply, scarce computational abilities...) and to the noisyreal world of deployment. This harsh environment can cause packet loss or node failurewhich hamper the network activity. Thus, continuous delivery of data requires reliabledata transmission and adaptability to the dynamic environment. Ensuring network reliabilityis consequently a key concern in WSNs and it is even more important in emergencyapplication such disaster management application where reliable data delivery is the keysuccess factor. The main objective of this thesis is to design a reliable end to end solution for data transmission fulfilling the requirements of the constrained WSNs. We tackle two design issues namely recovery from node failure and packet losses and propose solutions to enhance the network reliability. We start by studying WSNs features with a focus on technical challenges and techniques of reliability in order to identify the open issues. Based on this study, we propose a scalable and distributed approach for network recovery from nodefailures in WSNs called CoMN2. Then, we present a lightweight mechanism for packetloss recovery and route quality awareness in WSNs called AJIA. This protocol exploitsthe overhearing feature characterizing the wireless channels as an implicit acknowledgment(ACK) mechanism. In addition, the protocol allows for an adaptive selection of therouting path by achieving required retransmissions on the most reliable link. We provethat AJIA outperforms its competitor AODV in term of delivery ratio in different channelconditions. Thereafter, we present ARRP, a variant of AJIA, combining the strengthsof retransmissions, node collaboration and Forward Error Correction (FEC) in order toprovide a reliable packet loss recovery scheme. We verify the efficiency of ARRP throughextensive simulations which proved its high reliability in comparison to its competitor.

Event Reliability In Wireless Sensor Networks

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Author : Winston K. G. Seah
language : en
Publisher:
Release Date : 2011

Event Reliability In Wireless Sensor Networks written by Winston K. G. Seah and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Wireless sensor networks categories.

Application Communication Reliability In Wireless Sensor Networks

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Author : Amir Ehsani Zonouz
language : en
Publisher:
Release Date : 2015

Application Communication Reliability In Wireless Sensor Networks written by Amir Ehsani Zonouz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Detectors categories.

Results from reliability modeling and analysis are key contributors to the design and tuning activities of critical computer-based engineering systems. In many cases, particularly in smart systems that are capable of analyzing a situation and making decisions based on available data in an adaptive or predictive manner thereby performing intelligent actions, the operation of physical and engineered systems is monitored, coordinated, controlled, and integrated by a computing and communication core, which is based on networked wireless sensors. While the Internet has transformed the way we exchange information with one another, networked sensor systems are taking this stride further to build an environmentally-aware network that empower us to assimilate a deeper and broader understanding of the physical world than ever. But to ensure reliable and safe operation of sensor systems, it is critical that the communication among these smart wireless sensors be reliable and dependable. Any network outage, loss of transmitted data, or failure to capture important data decreases the users' trust on the system. From the viewpoint of researchers, developers and even consumers, reliability analysis is therefore an indispensable step before sensor systems can be widely deployed for mission-critical applications. This dissertation focuses on application communication of wireless sensor networks (WSNs), which relates to the transfer of sensed data collected from physical environments to the sink node through wireless links. We propose a time-dependent link failure model that incorporates the consideration of battery discharge for different types of batteries, sensor node power consumption, and wireless channel conditions for link reliability evaluation. We model and analyze the application communication reliability (ACR) of WSNs supporting K-coverage in the presence of shadowing for a specific monitored area. Impacts of the proposed link failure model, different K-coverage requirements, routing protocols, network density, and channel conditions on ACR are studied. A prototype software tool is developed to implement the proposed reliability models and methods for WSNs under the application communication paradigm. Another contribution is to investigate energy-efficient, reliable routing algorithms for data communications within WSNs. Particularly, a comprehensive cost function-based routing protocol is proposed, which integrates end-to-end path reliability, residual energy in battery-powered sensor nodes (BPSNs) and cost of communication paths to provide satisfactory quality of service to applications running on WSN. We also investigate optimal locations for energy harvesting sensor nodes (EHSNs) in hybrid WSNs consisting of BPSNs and EHSNs. Methods based on importance analysis, centrality concept and Genetic algorithm are investigated for the considered optimization problem to provide the best combination of average path reliability, implementation path cost, and average energy consumption. In this dissertation, we also investigate the concept of small-world for improving communication reliability and energy consumption of wireless networks. Small-world phenomenon is an important property of many complex networks possessing small average shortest path lengths and high clustering coefficients. We investigate solutions based on extension of wireless links to create the small-world property in wireless networks that typically have large average shortest path length due to the locality of physical connections.

Conforming Accuracy And Reliability In Wireless Sensor Networks Under Energy Constraints

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Author : David Noack
language : en
Publisher:
Release Date : 2011

Conforming Accuracy And Reliability In Wireless Sensor Networks Under Energy Constraints written by David Noack and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Resource Sharing And Reliability Of Wireless Sensor Networks

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Author : Mohamed Shazly
language : en
Publisher:
Release Date : 2014

Resource Sharing And Reliability Of Wireless Sensor Networks written by Mohamed Shazly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Sensor networks categories.

In recent years, there has been a growing interest in adopting Wireless Sensor Networks (WSNs) based solutions in a variety of domains including: environmental monitoring, industrial automation, battlefield surveillance, and health monitoring. The main thrust of the thesis is on developing new methodologies that allow for \textbf{(a)} increasing the resource sharing of a given WSN infrastructure, and \textbf{(b)} quantifying and assessing the reliability of a WSN taking random node failures into account. The thesis pursues the first direction by investing two network partitioning problems that aim at computing node disjoint subnetworks where each subnetwork satisfies some key quality of service measures. In the second direction, the thesis analyzes three WSN reliability problems. For these problems, we obtain complexity results, and algorithms for handling the problems. We conclude with some possible future research problems.

Energy Efficiency And Reliability In Wireless Sensor Networks

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Author : Junhua Zhu
language : en
Publisher:
Release Date : 2009

Energy Efficiency And Reliability In Wireless Sensor Networks written by Junhua Zhu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Sensor networks categories.

Security And Data Reliability In Cooperative Wireless Networks

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Author : Emad Hassan
language : en
Publisher: CRC Press
Release Date : 2018-04-27

Security And Data Reliability In Cooperative Wireless Networks written by Emad Hassan and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-27 with Computers categories.

Following a detailed overview of cooperative communications and the physical layer security, this book proposes relay and jammer selection schemes for security in one-way cooperative networks and to improve physical layer security in two-way cooperative networks. It also proposes a Cooperative Hybrid Self-Healing scheme to enhance the confidentiality of the data collected by UWSN. It ends with a proposal called Self-Healing Cluster Controlled Mobility (SH-CCM) scheme based on hybrid cooperation between both Proactive and Reactive peers and the sick sensors at both network and cluster levels to guarantee the security in UWSN.

Reliability In Energy Efficient Wireless Sensor Networks

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Author : Markus Anwander
language : en
Publisher:
Release Date : 2012

Reliability In Energy Efficient Wireless Sensor Networks written by Markus Anwander and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

Application Reliability Framework In Wireless Sensor Networks

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Author : Masumuzzaman Bhuiyan Mohammad
language : en
Publisher:
Release Date : 2011

Application Reliability Framework In Wireless Sensor Networks written by Masumuzzaman Bhuiyan Mohammad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Wireless sensor networks (WSNs) came into reality after the advancements in miniaturization and low-cost low-power circuit design technologies. Now-a-days, sensor networks are being widely used to support a large variety of applications. As sensor nodes are generally power constrained, most of the research works put great emphasis on energy conservation of sensor nodes. The primary objective of this dissertation is to ensure data reliability of the networks, without which an extended network lifetime brings little benefit. The required level of data reliability depends on the criticality of the applications. However, data reliability in WSNs can be characterised in terms of node-level reliability and network-level reliability. Extended node lifetime ensures node-level data collection reliability whereas successful data transportation to the sink ensures network-level application reliability. In order to contribute to node-level data collection reliability, this study has developed an energy efficient MAC protocol that conserves node energy through intelligent sleep and wake-up scheduling of nodes. The proposed MAC protocol can be employed in both data gathering and event sensing networks. To ensure reliable transportation of sensed data from collection sites to the sink in data gathering networks, a routing protocol has been designed that reduces congestion during data transfer in the networks. Another congestion-and-delay aware routing protocol has been designed to support timely detection of events in event sensing networks. Finally, a complete architecture has been proposed that supports both periodic environmental data collection and time critical event detection within a single network. The architecture eliminates the necessity of deploying two separate networks for performing two different tasks. Extensive analysis and experimentation have proved the effectiveness of the proposed schemes over the existing works in literature.

Improving Data Transmission Reliability And Throughput In Wireless Sensor Networks

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Author : Ee Foong Lee
language : en
Publisher:
Release Date : 2008

Improving Data Transmission Reliability And Throughput In Wireless Sensor Networks written by Ee Foong Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Data transmission systems categories.