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Performance Analysis of Group Based Detection for Sparse sensor Networks

Performance Analysis of Group Based Detection for Sparse Sen...

引用

ieee international conference on distributed computing systems

作者： Jingbin Zhang Gang Zhou Sang H. Son John A. Stankovic Kamin Whitehouse Computer Science Department University of Virginia Charlottesville VA 22903

ISBN: (纸本)9781424431748

In this paper, we analyze the performance of group based detection in sparse sensor networks, when the system level detection decision is made based on the detection reports generated from multiple sensing periods. Sparse deployment is essential for reducing cost of large scale sensor networks, which cover thousands of square miles. In a sparse deployment, the sensor field is only partially covered by sensors' sensing ranges, resulting in void sensing areas in the region, but all nodes are connected through multi-hop networking. Further, due to the unavoidable false alarms generated by a single sensor in a network, many deployed systems use group based detection to reduce system level false alarms. Despite the popularity of group based detection, few analysis works in the literature deal with group based detection. In this paper, we propose a novel approach called Markov chain based Spatial approach (MS-approach) to model group based detection in sensor networks. The M-S-approach successfully overcomes the complicated conditional detection probability of a target in each sensing period, and reduces the execution time of the analysis from many days to 1 minute. The analytical model is validated through extensive simulations. This analytical work is important because it provides an easy way to understand the performance of a system that uses group based detection without running countless simulations or deploying real systems.

关键词： sensor networks based system level execution time sensors False alarms Spread spectrum communication

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Real-time Detection of Clone Attacks in Wireless sensor Networks

Real-time Detection of Clone Attacks in Wireless Sensor Netw...

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ieee international conference on distributed computing systems

作者： Kai Xing Fang Liu Xiuzhen Cheng David H. C. Du Department of Computer Science The George Washington University Washington DC 20052 USA

ISBN: (纸本)9781424431748

A central problem in sensor network security is that sensors are susceptible to physical capture attacks. Once a sensor is compromised, the adversary can easily launch clone attacks by replicating the compromised node, distributing the clones throughout the network, and starting a variety of insider attacks. Previous works against clone attacks suffer from either a high communication/storage overhead or a poor detection accuracy. In this paper, we propose a novel scheme for detecting clone attacks in sensor networks, which computes for each sensor a social fingerprint by extracting the neighborhood characteristics, and verifies the legitimacy of the originator for each message by checking the enclosed fingerprint. The fingerprint generation is based on the superimposed s-disjunct code, which incurs a very light communication and computation overhead. The fingerprint verification is conducted at both the base station and the neighboring sensors, which ensures a high detection probability. The security and performance analysis indicate that our algorithm can identify clone attacks with a high detection probability at the cost of a low computation/communication/storage overhead. To our best knowledge, our scheme is the first to provide realtime detection of clone attacks in an effective and efficient way.

关键词： Clone Cells real-time detection sensors Wireless sensor networks Fingerprint recognition Fingerprints Legitimacy BASE STATION Optical communication sensor networks

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EcoDAQ: A Case Study of a Densely distributed Real-Time System for High Data Rate Wireless Data Acquisition

EcoDAQ: A Case Study of a Densely Distributed Real-Time Syst...

引用

ieee international conference on Embedded and Real-Time computing systems and Applications (RTCSA)

作者： Chong-Jing Chen Pai H. Chou Center for Embedded Computer Systems University of California Irvine CA USA Department of Computer Science National Tsing Hua University Hsinchu Taiwan

ISBN: (纸本)9780769533490

Densely distributed wireless real-time system must perform communication scheduling and protocols in addition to task scheduling to achieve schedulability and reliable communication. While many wireless sensor networks are densely distributed, they assume low duty cycling and trivial data packet rates, and they cannot handle many real-world applications. To highlight these design issues, this paper presents a case study with EcoDAQ, a wireless data acquisition system with 50 sensor nodes streaming real-time data over the same frequency channel. To achieve reliable communication, we define a pulling protocol that minimizes node complexity while guaranteeing collision freedom on a given frequency channel. Our case study illustrates the impact of communication requirements on the rest of the systems including bus and processing speeds. Experimental results show that our monitoring station can sustain gathering accelerometer data from up to 50 nodes in one square meter area at up to 15,000 samples per second with minimal latency and show very high expandability, flexibility and reliability.

关键词： Wireless sensor networks Time division multiple access Wireless communication Base stations Protocols Throughput Multiaccess communication

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An Efficient Policy System for Body sensor Networks

An Efficient Policy System for Body Sensor Networks

引用

international conference on Parallel and distributed systems (ICPADS)

作者： Yanmin Zhu Sye Loong Keoh Morris Sloman Emil Lupu Naranker Dulay Nathaniel Pryce Department of Computing Imperial College London UK

Body sensor networks (BSNs) have become a promising technology for healthcare, in which biosensors continuously monitor physiological parameters of a user. Distinct from conventional sensor networks for environmental monitoring, such networks need to be adaptive and can therefore be easily managed. In addition, security becomes a necessity. To this end, we design a policy system that implements policy-driven management on the sensor level. Biosensor adaptability is realized through support of dynamic loading, enabling and disabling of policies without shutting down nodes. In addition, fine-grained access control becomes possible through authorization policies on biosensors. Design and implementation details of the policy system are presented. Experimental results demonstrate that the policy system is viable and can accelerate application development of biosensor networks for healthcare.

关键词： Body sensor networks Biosensors Medical services Condition monitoring Biomedical monitoring Environmental management sensor systems Access control Authorization Acceleration

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An application of networked embedded computer systems to provide distributed decision making for intelligent logistics

An application of networked embedded computer systems to pro...

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ieee international conference on Electro-Information Technology

作者： R. Gary Diaz Highland Park IL USA

This paper presents the application of computer systems to provide distributed decision making for intelligent logistics using a communications system architecture enabled by a multi-band antenna system. This communication system architecture is described for a commercial vehicle application that is linked to off board databases for distributed decision making. The distributed decision making provides useful functions such as 1) need for servicing and location of the nearest service center with the necessary parts in stock, 2) routing and navigation and 3) load brokering and co-ordination. The paper references a U.S. patent that was granted prior to the introduction of the component sensor and communication technology which enable the overall system architecture to be practical. The paper also references a U. S patent for a multi-band antenna issued in 2006. These enabling technologies are described and referenced herein. Moreover recent progress in the development of distributed intelligent and multi-agent control systems is being published which will allow the realization of the communications system architecture.

关键词： Application software Computer networks distributed computing Embedded computing distributed decision making Intelligent networks Logistics Computer architecture Intelligent sensors Computer applications

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distributed roadmap aided routing in sensor networks

Distributed roadmap aided routing in sensor networks

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

作者： Zizhan Zheng Kai-Wei Fan Prasun Sinha Yusu Wang Department of Computer Science and Engineering Ohio State Uinversity USA

Communication between arbitrary pairs of nodes has become critical to support in emerging sensor networking applications. Traditional routing techniques for multi-hop wireless networks either require high control overhead in computing and maintaining routes, or may lead to unbounded route-stretch. In order to bound the route-stretch, we propose a distributed shortest-path roadmap based routing paradigm that embodies two ideas: routing hole approximation that summaries the critical information about hole boundaries and controlled advertisement that advertises the boundary information of each hole within limited neighborhoods. We show that our approach makes a desired tradeoff between the worst case route-stretch and the message overhead through both analysis and simulations.

关键词： Routing Routing protocols Approximation methods Helium Protocols Floods Approximation algorithms

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A balanced parallel clustering protocol for wireless sensor networks using K-means techniques

A balanced parallel clustering protocol for wireless sensor ...

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2nd international conference on sensor Technologies and Applications, sensorCOMM 2008

作者： Tan, Liansheng Gong, Yanlin Chen, Gong Department of Computer Science Central China Normal University Wuhan 430079 China Research School of Information Sciences and Engineering Australian National University Canberra ACT 0200 Australia

ISBN: (纸本)9780769533308

For wireless sensor networks (WSNs), It Is a challenging task how to schedule the energy resource to extend the network lifetime due to the fact that WSNs are usually powered by limited and non-rechargeable battery. A clustering scheme is helpful In reducing the energy consumption by aggregating data at intermediate sensor nodes. In this paper, we propose a balanced parallel K-means based clustering protocol;we term it BPK-means protocol. In this new protocol, we use K-means algorithm to cluster the sensor nodes, the cluster-heads are then selected in terms of two factors, they are a) the distance from node to cluster-center, and b) the residual energy. BPK-means only requires local communications: each tentative cluster-head only communicates with their topologically neighboring nodes and other tentative cluster-heads when achieving a distributed clustering scheme. The algorithm thus has the attractive feature of parallel computations. Moreover, BPK-means further balances the clusters to improve intra-cluster communication consumptions. We present the algorithm of this new protocol, analyze its computing properties, and validate the algorithm by simulations. Both theoretical analyses and simulation results demonstrate that BPK-means can achieve better load-balance and less energy consumptions when compared with LEACH. In addition, the BPK-means protocol is able to distribute energy dissipation evenly among the sensor nodes, which then prolong the system lifetime for the networks significantly. © 2008 ieee.

关键词： Clustering algorithms

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Context Integration for Smart Workflows

Context Integration for Smart Workflows

引用

ieee international conference on Pervasive computing and Communications (PerCom)

作者： Matthias Wieland Peter Kaczmarczyk Daniela Nicklas Institute of Architecture of Application Systems Universität Stuttgart Stuttgart Germany Institute of Parallel and Distributed Systems Universität Stuttgart Stuttgart Germany

The usage of workflow technology to model and execute business processes is widespread in many enterprises and within the software industry. With the growing maturity of sensors, wireless communication, and distributed computing environments, we can enhance this approach to enable smart workflows, which are business processes crossing the boundary to the physical world. Applications for such processes can be found in many application domains, like logistics or in smart factory environments. To realize smart workflows, workflow engines can be coupled with existing context provisioning systems. However, there is a gap between the rather low- level provisioning of context (e.g., sensor data and stock information) and the concepts needed in smart workflows (e.g., "is a spare tool available?"). The main contribution of this paper is to bridge this gap: we show how integration processes can be used to provide context information at different semantical levels for smart workflows.

关键词： Intelligent sensors Application software Context Computer industry Wireless communication distributed computing Business communication Logistics Production facilities Engines

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Enabling Accurate Node Control in Randomized Duty Cycling Networks

Enabling Accurate Node Control in Randomized Duty Cycling Ne...

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ieee international conference on distributed computing systems

作者： Kang-Won Lee Vasileios Pappas Asser Tantawi IBM T. J. Watson Research Center

ISBN: (纸本)9781424431748

In this paper, we propose a novel duty cycling algorithm for a large-scale dense wireless sensor networks. The proposed algorithm is based on a social behavior of nodes in the sense that individual node's sleep/wakeup decision is influenced by the state of its neighbors. We analyze the behavior of the proposed duty cycling algorithm using a stochastic spatial process. In particular, we consider a geometric form of neighborhood dependence and a reversible Markov chain, and apply this model to analyze the behavior of the duty cycling network. We then identify a set of parameters for the reversible spatial process model, and study the steady state of the network with respect to these parameters. We report that our algorithm is scalable to a large network, and can effectively control the active node density while achieving a small variance. We also report that the social behavior of nodes has interesting and non-obvious impacts on the performance of duty cycling. Finally, we present how to set the parameters of the algorithm to obtain a desirable duty cycling behavior.

关键词： Cycling Social Behavior Ganglia Markov chain Geometric forms IMPACT PROPERTIES algorithms procedural model Scalability Wireless sensor networks Network

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Time-Based Privacy Protection for Multi-attribute Data in WSNs

Time-Based Privacy Protection for Multi-attribute Data in WS...

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international conference on Parallel and distributed systems (ICPADS)

作者： Baowei Wang Xingming Sun Xinbing Wang Bin Xiao School of Computer & Communication Hunan University Changsha China Department of Electronic Engineering Shanghai Jiaotong university Shanghai China Department of Computing Hong Kong Polytechnic University Hong Kong China

Wireless sensor networks become ubiquitous to collect people's information in many people-centric applications, such as, health care, smart space and public safety. Because any misusage of these personal data might result in the leakage of privacy, it is expected that the data requesters can only access to the data what they are entitled to read. Based on a revised hash chain technique, we proposed a novel time-based privacy protection (TPP) scheme for multi-attribute data in WSNs. In the scheme, all the personal data are divided into 2-D subspaces representing data attribute and generation time. Data in each subspace is encrypted with a sub-key before its transmission to the sink. Anyone who wants to read data attribute at a particular time must get the corresponding sub-key from the sender node. TPP can generate a sub-key for data in each subspace in an efficient manner in terms of less sub-key generation time and low memory space usage. The simulation results show that the schemes can be applied to the resource limited WSNs efficiently.

关键词： Data privacy Protection Wireless sensor networks Space technology Computer networks Concurrent computing distributed computing Pervasive computing Medical services Health and safety

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