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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Anas Abu Taleb J. Mathew D. K. Pradhan Department of Computer Science University of Bristol UK

Wireless sensor networks are expected to operate in an unattended manner for long periods of time. As a result, they should be able to tolerate faults and maintain a reasonable performance level. therefore, we propose two fault-tolerant clustered De Bruijn based multi layered architectures, a fault-tolerant routing scheme and a distributed fault diagnosis algorithm. the performance of the proposed work was analyzed according to the end-to-end delay and the data success rate. Also, the performance was compared to that of mesh networks. Our simulation results show that De Bruijn based networks perform better in both fault free and faulty situations.

关键词： Fault diagnosis Wireless sensor networks Fault tolerance sensor phenomena and characterization Clustering algorithms Temperature sensors Energy consumption Computer architecture Routing sensor systems

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Demonstration abstract: Globally interconnected WSAN testbeds

Demonstration abstract: Globally interconnected WSAN testbed...

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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Lasse thiem Gabriele Goldacker Mario Schuster thomas Luckenbach Byung Kyu Kim Fraunhofer Institute for Open Communication Systems Berlin Germany National Information and Society Agency Seoul South Korea

this demonstration presents the ongoing development of a framework for a global wireless sensor / actuator network (GWSAN). this GWSAN is formed through the interconnection of about 10 WSAN testbeds currently mainly located in Asia and Europe. GWSANs are one of the enabler for the Internet of things and thus the Web of things. Similar to the beginning of the Internet in the late 70s this GWSAN is a research network. Topics of the joint research and development activities include management, maintenance and interoperability. therefore algorithms and autonomous / automatic configuration mechanisms are implemented and tested as well as remote software updates in distributed WSANs. Furthermore, graphical interfaces for the management and the interaction with GWSAN are part of the development.

关键词： Testing Wireless sensor networks Actuators Asia Europe Internet IP networks Research and development Research and development management Software algorithms

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A semi-distributed localization protocol for wireless sensor and actor networks

A semi-distributed localization protocol for wireless sensor...

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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Giacomo Ghidini Cristina M. Pinotti Sajal K. Das Center of Research in Wireless Mobility and Networking Department of Computer Science and Engineering University of Technology Arlington USA Department of Computer Science and Mathematics University of Perugia Italy

We consider a wireless sensor and actor network (WSAN) consisting of a large number of tiny, low-cost sensors uniformly and independently distributed in a two-dimensional geographical region around a few powerful entities, called actors. To save energy, the sensors operate according to sleep/awake schedules in an asynchronous manner. In this setting, we propose a semi-distributed, actor-centric localization algorithm which organizes the sensors in the vicinity of each actor by means of a discrete polar coordinate system. Specifically, each sensor is localized when it acquires the corona and sector coordinates of the region it resides in. To accomplish the localization task, each actor first trains a subset of sensors in its vicinity, which in turn train their neighbors. By modeling the deployed sensors as a two-dimensional Poisson point process and applying well-known results from the Coupon Collector's problem and Chernoff bounds, we derive bounds on the sensor density required to localize with high probability all sensors in the actor's vicinity. Finally, we verify the analytical bounds with results from our simulation experiments.

关键词： Wireless sensor networks Wireless application protocol Scheduling Computer science Hardware Power engineering and energy Mathematics sensor systems Corona Analytical models

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Definition and configuration of reliable event detection for heterogeneous WSN

Definition and configuration of reliable event detection for...

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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Steffen Ortmann IHP Microelectronics Germany

this work introduces an intuitive XML-based Event Specification Language (ESL) that simplifies event configuration to a level that is even suitable for non-professionals. It features hardware independent description elements to define complex phenomena and improves these by tailor-made voting schemes and application constraints. Based on that, a novel fully decentralised mechanism to autonomously set up distributed event detection called Event Decision Tree (EDT) and a cost efficient means to maintain such EDT, is presented. EDT can be efficiently constructed on every device by using a tiny generating finite state machine requiring eight states only. It enables every node to self divide event queries according to its own resources and self-adapt to the tasks assigned. Simultaneously, the EDT provides the interface for efficient collaboration using a lease-based publish/subscribe approach, which outperforms even idealised ACK-based approaches.

关键词： Event detection Wireless sensor networks sensor phenomena and characterization XML Costs Fault tolerance sensor systems Microelectronics Energy efficiency Availability

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Smart lighting using LED luminaries

Smart lighting using LED luminaries

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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Sachin Bhardwaj Tanir Özçelebi Johan Lukkien Department of Mathematics and Computer Science Eindhoven University of Technology Eindhoven The Netherlands

the target of a smart lighting system is to control light sources in an environment (e.g. home, office) adaptively according to user contexts and preferences. Literature work in this area focuses on traditional light sources such as incandescent and fluorescent lights, whereas this paper takes a step towards adopting LED luminaries. A novel illumination model for distributed LED luminary control is presented. A prototype system is designed and implemented using several LED luminaries and light sensors. Experiments carried out on the reading space use case show that the desired illumination can be achieved based on user preferences, irrespective of the existence of external light sources.

关键词： LED lamps Light emitting diodes Lighting control Light sources Intelligent sensors Fluorescence Fluorescent lamps Control systems Prototypes sensor systems

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Web services on embedded systems - a performance study

Web services on embedded systems - a performance study

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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Christin Groba Siobhán Clarke Lero Graduate School of Software Engineering Distributed Systems Group School of Computer Science and Statistics Trinity College Dublin Dublin Ireland

A platform-independent communication mechanism is essential for the seamless integration of embedded devices into the Web of things. Web services provide for such communication, though there remains an open question as to whether they are suitable for hardware-constrained devices. While there is a general perception that they are too resource-intensive, there are few scientific studies dedicated to answering this question. As a result, researchers or developers investigating applications for the Web of things have little evidence to support a decision on the best technical solution. this paper presents the results of a study designed to assess the performance of Web services on embedded devices. For our investigation, we deployed Web services on Sun SPOTs, representing medium-sized wireless sensor platforms, and analysed disk space, message size, response time and energy consumption. Our study quantifies the overhead of Web services and provides empirical data on whether this Web technology is a suitable approach for embedded devices.

关键词： Web services Embedded system Wireless sensor networks Application software Space technology Energy consumption Sun Delay Hardware systems engineering and theory

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Integrating people-centric sensing with social networks: A privacy research agenda

Integrating people-centric sensing with social networks: A p...

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ieee Annual conference on Pervasive computing and Communications Workshops (PerCom)

作者： Ioannis Krontiris Felix C. Freiling Laboratory of Dependable Distributed Systems University of Mannheim Germany

During the last few years there has been an increasing number of people-centric sensing projects, which combine location information with other sensors available on mobile devices, such as the camera, the microphone or the accelerometer, giving birth to a different dimension in sensing our environment compared to the existing wireless sensor networks approach. In this paper, we envision a new scenario, where users develop their own participatory urban sensing projects at a large scale through the use of social networks. Consequently, users can participate in campaigns created by other users, according to their sensitivities and interests, exploiting the existing enormous social interconnections offered by existing social networking tools. We place our primary concern to protecting user privacy and address the need for new solutions in location anonymity and access control under this new complex and dynamic communication paradigm.

关键词： Irrigation

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Optimal rate allocation of compressed data streams in multihop sensor networks

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5th ieee international conference on distributed computing in sensor systems, dcoss 2009

作者： Lin, Chun Lung Wang, Jia Shung Department of Computer Science National Tsing Hua Univeristy Hsinchu Taiwan

ISBN: (纸本)3642020844

Consider that a transform coder is installed at each sensor node. In this paper, an analytical framework for optimal rate allocation of compressed data streams in wireless multihop sensor networks is presented. Compact, necessary and sufficient closed-form solution to the optimal rate allocation problem is derived based on the lower rate approximation of rate distortion function. Extensive simulations were conducted using real-world data traces, LEM and Intel Lab datasets. the simulation results show that the information of compression ratios of sensor data can be utilized to optimally distributing the limited transmission rate among sensors to greatly reduce the amount of transmitted data. Moreover, the performance gain of the optimal rate allocation increases exponentially at lower rates, lower compression ratios of sensor data and larger variation between compression ratios. © 2009 Springer Berlin Heidelberg.

关键词： sensor nodes

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In-network outlier detection in wireless sensor networks

In-network outlier detection in wireless sensor networks

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26th ieee Internationa26th ieee international conference on distributed computing systems, ICDCS 2006

作者： Branch, Joel Szymanski, Boleslaw Giannella, Chris Wolff, Ran Kargupta, Hillol Computer Science Rensselaer Polytechnic Institute 110 8th Street Troy NY 12180 Computer Science and Electrical Engineering University of Maryland Baltimore County 1000 Hilltop Circle Baltimore MD 21250

ISBN: (纸本)0769525407

To address the problem of unsupervised outlier detection in wireless sensor networks, we develop an algorithm that (1) is flexible with respect to the outlier definition, (2) works in-network with a communication load proportional to the outcome, and (3) reveals its outcome to all sensors. We examine the algorithm's performance using simulation with real sensor data streams. Our results demonstrate that the algorithm is accurate and imposes a reasonable communication load and level of power consumption. © 2006 ieee.

关键词： Intrusion detection

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Secure location verification using radio broadcast

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ieee TRANSACTIONS ON DEPENDABLE AND SECURE computing 2006年第4期3卷 377-385页

作者： Vora, Adnan Nesterenko, Mikhail Kent State Univ Dept Comp Sci Kent OH 44242 USA

Secure location verification is a recently stated problem that has a number of practical applications. the problem requires a wireless sensor network to confirm that a potentially malicious prover is located in a designated area. the original solution to the problem, as well as solutions to related problems, exploits the difference between propagation speeds of radio and sound waves to estimate the position of the prover. In this paper, we propose a solution that leverages the broadcast nature of the radio signal emitted by the prover and the distributed topology of the network. the idea is to separate the functions of the sensors. Some sensors are placed such that they receive the signal from the prover if it is inside the protected area. the others are positioned so that they can only receive the signal from the prover outside the area. Hence, the latter sensors reject the prover if they hear its signal. Our solution is versatile and it deals with provers using either omni-directional or directional propagation of radio signals without requiring any special hardware besides a radio transceiver. We estimate the bounds on the number of sensors required to protect the areas of various shapes and extend our solution to handle complex radio signal propagation, optimize sensor placement, and operate without precise topology information.

关键词： location verification wireless sensor networks security

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