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Multiobjective Routing for Simultaneously Optimizing System Lifetime and Source-to-Sink Delay in Wireless sensor Networks

Multiobjective Routing for Simultaneously Optimizing System ...

引用

international conference on distributed computing systems Workshop

作者： Mahmood R. Minhas Sathish Gopalakrishnan Victor C.M. Leung Department of Electrical & Computer Engineering University of British Columbia Vancouver Canada

We target an interesting problem of simultaneous optimization of lifetime and source-to-sink delay in wireless sensor networks, and present a fuzzy multiobjective online routing algorithm. For a routing request, the proposed routing algorithm finds a path that offers a good balance between the two routing objectives, namely maximizing the network lifetime and minimizing the source-to-sink delay. Fuzzy membership functions and rules are used for designing the cost function for each of the optimization objective and the multiobjective cost aggregation function, respectively. It is shown that the use of fuzzy logic offers a flexible mean of controlling the tradeoff between the two objectives. A set of simulation results were obtained, using numerous topologies and under various parameters, to indicate that the proposed multiobjective routing scheme is able to achieve good lifetime values while maintaining reasonably short end-to-end delay values.

关键词： Routing Wireless sensor networks Delay distributed computing Cost function Fuzzy logic Algorithm design and analysis conferences sensor systems Computer networks

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EDLA Tradeoffs for Wireless sensor Network Target Tracking

EDLA Tradeoffs for Wireless Sensor Network Target Tracking

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international conference on distributed computing systems Workshop

作者： Richard Tynan G.M.P. O'Hare M.J. O'Grady Conor Muldoon CLARITY: The Centre for Sensor Web Technologies University College Dublin Belfield Ireland

the number of active nodes in a WSN deployment governs both the longevity of the network and the accuracy of applications using the network's data. As node hibernation techniques become more sophistocated, it is important that an accurate evaluation methodology is employed to ensure fair comparisons across different techniques. Examining both energy and accuracy ensures a claim of increased longevity for a particular technique can be contrasted against its associated drop, if any, in application accuracy. this change can also be as a result of increased latency and the accuracy encapsulates many aspects of WSN performance in one metric. In this work, we detail the first in a series of simulation experiments designed to demonstrate the tradeoffs for a WSN and we employ mobility tracking as the application to benchmark accuracy. Additionally, we demonstrate experimental evidence for a potential adaptive mobility tracking protocol.

关键词： Wireless sensor networks Target tracking Delay Protocols Quality of service distributed computing conferences Educational institutions Performance analysis Network topology

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Adaptive Data Replication for Load Sharing in a sensor Data Center

Adaptive Data Replication for Load Sharing in a Sensor Data ...

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international conference on distributed computing systems Workshop

作者： Kyoung-Don Kang Can Basaran Department of Computer Science State University of New york Binghamton USA

Cyber-physical applications need to process a lot of sensor data, for example, to analyze traffic patterns and structural soundness of critical infrastructures. Although the amount of sensor data to process is increasing fast, system support to efficiently store and analyze an extensive amount of sensor data largely lags behind. To efficiently store, retrieve, and process massive sensor data, we are developing a sensor data center (SDC) that supports spatio-temporal sensor data structures and parallel sensor data processing using clustered computational nodes composed of commodity hardware. the SDC sharply contrasts to most existing data centers that do not support spatio-temporal sensor data storage, retrieval, and processing. In this paper, we especially focus on the problem of potential load imbalance due to data access skews that adversely affects the timeliness of parallel sensor data processing. Specifically, we present an adaptive data replication method to address access skews in a SDC. In our performance evaluation performed in a preliminary version of a SDC, our adaptive approach substantially outperforms a baseline that does not support adaptive data replication.

关键词： Acoustic sensors sensor systems Information retrieval Data processing Pattern analysis Data structures Concurrent computing Hardware Memory Performance evaluation

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A Structural Health Monitoring System Using Wireless sensor Network

A Structural Health Monitoring System Using Wireless Sensor ...

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international conference on Wireless Communications, Networking and Mobile computing (WiCom)

作者： Jianjun Niu Zhidong Deng Fengguang Zhou Zongsheng Cao Zhanqing Liu Fangzhou Zhu State Key Laboratory of Intelligent Technology and Systems Tsinghua National Laboratory of Information Science and Technology Department of Computer Science and Technology Tsinghua University China Beijing Special Engineering Design and Research Institute China

Wireless sensor network (WSN) based structural health monitoring (SHM) system attracts increasing interest in recent years. However, the restricted bandwidth, memory and energy pose great challenges to the application of SHM in large scale building. Supported by a real engineering project, a WSN based prototype of SHM system is designed in this paper. Acceleration data, synchronously sampled in each sensor node, are transported to a data processing computer through a base station. In order to achieve a high network throughput, a time division multiple access (TDMA) approach is proposed to reduce the packet collision and energy consumption. 17 sensor nodes, one base station and a processing computer are distributed to validate the prototype system. Test results present that the approach, we proposed, can reduce the signal collision and increase data throughput. the prototype is feasible to the SHM project of a large scale building.

关键词： Monitoring Wireless sensor networks Prototypes Large-scale systems Base stations throughput Time division multiple access Bandwidth Application software Buildings

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Design and Simulation of Control Algorithms for WINCS

Design and Simulation of Control Algorithms for WINCS

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international conference on Wireless Communications, Networking and Mobile computing (WiCom)

作者： Jing-qi Fu Cai-xian Xu Bao-dong Kan Hai-kuan Wang

Wireless networked control system (WINCS), based on distributed control systems of wireless network, integrate control technology, computer technology, network technology and communication technology. the delay of controlled plant and wireless network transmission may have bad impacts on system performance. Aiming at solving the delay problem, this paper analyzes the existing problems of wireless network and the solutions for WINCS firstly. then, the components of simulation software true time toolbox and the function of each module are detailed. thirdly, a wireless networked control system is constructed on true time simulation platform, of which controlled plant is a DC servo and wireless transmission network is ZigBee protocol. Performances of control system are compared under conventional PID and predictive PI algorithms, which show that predictive PI controller can obtain better control effects in a large time-delay system. Finally, this paper analyzes the composition of the system delays, including the sensor to the controller delay and the controller to the actuator delay, and outlines the conclusions.

关键词： Algorithm design and analysis Control systems Communication system control Wireless networks Computational modeling Networked control systems Communications technology Delay distributed control Computer networks

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A novel wearable instrumentation system for bomb disposal suits

A novel wearable instrumentation system for bomb disposal su...

引用

5th international conference on Informatics in Control Automation and Robotics, ICINCO 2008

作者： Kemp, John Gaura, Elena I. Brusey, James Cogent Computing Applied Research Centre Coventry University Priory St Coventry CV1 5FB United Kingdom

ISBN: (纸本)9783642002700

Bomb disposal suits contain a large amount of padding and armour to protect the wearer's vital organs in the case of explosion. the combination of the heavy (roughly 40kg) suit, physical exertion, and the environment in which these suits are worn can cause the wearer's temperature to rise to uncomfortable and potentially dangerous levels during missions. this paper reports on the development of a wearable wireless sensing system suitable for deployment in such manned bomb disposal missions. In its final form, the system will be capable of making in-network autonomous decisions related to the actuation of cooling within the suit, in order to increase the comfort of the wearer. In addition, it will allow an external observer to remotely monitor the health and comfort of the operative. Laboratory experiments with the instrumented suit show how skin temperature varies differently for different skin sites, motivating the need for multiple, distributed sensing. the need for timely application of in-suit cooling is also shown, as well as the importance of monitoring the overall health of the wearer of the suit. © 2009 Springer-Verlag Berlin Heidelberg.

关键词： Body sensor networks

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Achieving Energy Conservation, Coverage and Connectivity Requirements in Wireless sensor Networks

Achieving Energy Conservation, Coverage and Connectivity Req...

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international conference on distributed computing systems Workshop

作者： Li Liu Bin Hu Huifang Miao Hao Li Lian Li Qinglin Zhao School of Information Science and Engineering Lanzhou University Lanzhou Gansu China LRI Universite Paris-Sud and CNRS Orsay France Department of Computing Birmingham City University UK Department of Communication Engineering Xiamen University Xiamen Fujian China

Energy conservation, coverage and connectivity are three critical application requirements in wireless sensor networks. Related researches have either concerned coverage, connectivity, and energy conservation separately or required sensing/communication range restrictions. In this paper, we aim to maximize the network lifetime, while maintaining coverage and connectivity simultaneously, without any sensing or communication range restriction. We propose MDS-MCC problem and we prove it is NP-complete. We also present a heuristic algorithm to solve MDS-MCC. Furthermore, we study MDS-MCC problem under some special conditions and obtain some important theoretical results.

关键词： Energy conservation Wireless sensor networks Monitoring Computer networks Next generation networking distributed computing Power engineering and energy Mechanical sensors conferences Information science

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A Static Multi-hop Underwater Wireless sensor Network Using RF Electromagnetic Communications

A Static Multi-hop Underwater Wireless Sensor Network Using...

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international conference on distributed computing systems Workshop

作者： Xianhui Che Ian Wells Paul Kear Gordon Dickers Xiaochun Gong Mark Rhodes Swansea Metropolitan University UK Wireless Fibre System Limited UK

Most underwater sensor networks choose acoustics as the medium for wireless transmission. However, electromagnetic waves also offer great merits for transmission in special underwater environment. A small scale wireless sensor network is deployed using electromagnetic waves with a multi-hop static topology under shallow water conditions where there is a high level of sediment and aeration in the water column. Data delivery is scheduled via daily cycles of sleeping and waking up to transmit. Due to the unique features of the network, ad-hoc on-demand distance vector (AODV) is chosen as the routing protocol. Modeling and simulations are conducted to evaluate network performance in terms of failure tolerance, congestion handling, and optimal grid arrangements. the results demonstrate the likely effectiveness of the designated network for this and similar scenarios.

关键词： Spread spectrum communication Wireless sensor networks Underwater communication Electromagnetic scattering Underwater acoustics Radio frequency Optical sensors Acoustic waves Acoustic applications Optical fiber networks

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A new broadcast-key management scheme for distributed wireless sensor networks

A new broadcast-key management scheme for distributed wirele...

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ieee Internatonal conference on Mobile Adhoc and sensor systems (MASS)

作者： YingZhi Zeng Yan Xia JinShu Su BaoKang Zhao WanRong Yu School of Computer National University of Defense Technology ChangSha Hunan China School of Computer and Communication Hunan University ChangSha Hunan China

the management of broadcast-key is one of the most important security problems in the distributed wireless sensor networks. Firstly, the broadcast-key should be calculated and used by each node. Secondly, the broadcast-key should also be updated according to the variation of security condition. In this paper, we propose a new broadcast-key management scheme which has many advantages over the famous muTESLA protocol. the analysis in this paper demonstrates its feasibility, efficiency and security for broadcast-key establishment and renewing in distributed wireless sensor networks.

关键词： Broadcasting Wireless sensor networks Computer network management Computer networks Cryptography Broadcast technology Technology management Computer security Protocols distributed computing

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Time-Synchronization Free Localization in Large Scale Underwater Acoustic sensor Networks

Time-Synchronization Free Localization in Large Scale Underw...

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international conference on distributed computing systems Workshop

作者： Wei Cheng Andrew thaeler Xiuzhen Cheng Fang Liu Xicheng Lu Zexin Lu Department of Computer Science George Washington University Washington D.C. DC USA Department of Computer Science University of Texas-Pan American Edinburgh TX UK School of Computer Science National University of Defense Technology Changsha Hunan China

We introduce and study the localization problem in large scale underwater acoustic sensor networks. Considering that depth information is typically available for underwater sensors, we transform the 3D underwater positioning problem into its two-dimensional counterpart via a projection technique. We then introduce a localization scheme specifically designed for large scale acoustic underwater sensor networks. the proposed localization scheme does not require time-synchronization in the network. this scheme relies on time-differences of arrival (TDoA) measured locally at a sensor to detect range differences from the sensor to three anchors that can mutually hear each other. We consider variations in the speed of sound and analyze the performance of the proposed scheme in terms of the number of localized nodes, location errors, and the number of reference nodes.

关键词： Large-scale systems Underwater acoustics Acoustic sensors Underwater vehicles Computer science Global Positioning System Bandwidth Intelligent sensors sensor systems USA Councils

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