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检索条件"任意字段=3rd International Symposium on Information Processing in Sensor Networks"

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Secure consensus averaging for secure information fusion in sensor networks

Secure consensus averaging for secure information fusion in ...

引用

9th international symposium on Signal processing and its Applications

作者： Kefayati, Mahdi Talebi, Mohammad S. Rabieet, Hamid R. Khalaj, Babak H. Sharif Univ Technol Tehran Iran

ISBN: (纸本)9781424407781

In this work, we have examined the problem of distributed consensus averaging over senor networks from a novel point of view considering the need for security. We have proposed a method for incorporating privacy into the scalable average consensus mechanisms. Our proposed method, Random Projections Method (RPM), is lightweight and transparent since it is not based on cryptography and does not require any change in the fusion system. RPM is based on introducing a simple, yet effective pre-fusion algorithm. We mathematically derived the correctness of RPM and analyzed its effect on convergence of the system through simulation. Robustness of RPM against honest-but-curious adversaries is analyzed and it is shown that the proposed method has maximum robustness saving that the victim has at least one non-colluding neighbor.

关键词： sensor networks

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An information aggregation scheme of multi-node in ubiquitous sensor networks

An information aggregation scheme of multi-node in ubiquitou...

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5th international symposium on Parallel and Distributed processing and Applications/ISPA 2007 international Workshops

作者： Park, Haeryong Lime, Seongan Yie, Ikkwon Kim, Hyun Chun, Kilsoo Lee, Jaeil KISA Seoul South Korea Inha Univ Dept Math Incheon South Korea

ISBN: (纸本)9783540747666

Mobile networking, mobile systems and applications and ubiquitous computing infrastructures are of strongly growing importance in the IT sector in general, and for the parallel and distributed computing community. Particularly, when an signed (authenticated), information of multi-node is aggregated in ubiquitous sensor networks, the number of the signing information is very small. Thus, signature scheme which signs information has strong unforgeability. In 2005 Yu and Chen proposed threshold signature scheme [12]. Their scheme has a high efficiency. But, their scheme is not suitable for ubiquitous sensor networks because their scheme has no strong unforgeability. In this paper, we modify their scheme so that modified scheme is suitable for ubiquitous sensor networks. Also, our scheme has a good efficiency, and a smaller secret key than other cryptosystems with a similar security level.

关键词： Ubiquitous computing

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A coverage algorithm for three-dimensional large-scale sensor network

A coverage algorithm for three-dimensional large-scale senso...

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2007 international symposium on Intelligent Signal processing and Communications Systems, ISPACS 2007

作者： Lei, Rao Wenyu, Liu Peng, Guo Department of Electronics and Information Engineering Huazhong University of Science and Technology China

ISBN: (纸本)9781424414475

Energy and bandwidth constraint have been the bottleneck of sensor network applications in years. We work on how to decide the sensor nodes density to guarantee a full coverage and reduce redundancy sensor nodes to reduce energy consumption in a large-scale 3D sensor network. A coverage algorithm using specified 3D network model is proposed and it solves the network sensor density and redundancy problems. The network energy consumption can be significantly reduced by our algorithm. © 2007 IEEE.

关键词： sensor networks

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The wireless sensor network for home-care system using ZigBee

The wireless sensor network for home-care system using ZigBe...

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3rd international Conference on Intelligent information Hiding and Multimedia Signal processing

作者： Huang, Mao-Cheng Huang, Jyun-Ciang You, Jing-Cyun Jong, Gwo-Jia Natl Kaohsiung Univ Appl Sci Dept Elect Engn Kaohsiung 807 Taiwan

ISBN: (纸本)9780769529943

In this paper, we presented the wireless sensor networks (WSN) to observe the human physiological signals by ZigBee, which is provided with lower power consumption, small volume, high expansion, stylization and two-way transmission, etc. ZigBee is generally used for home care, digital home control, industrial and security control. This paper developed a suite of home care sensor network system by ZigBee's characteristic, which is embedded three sensors (temperature sensor, humid sensor, and light sensor). It is attached to other sensors, such as the biosensor for observe heart rate and blood pressure. We implemented Panasonic EW3035 blood pressure monitor to measure heart rate and bloodpressure. The biosensor transmits measured signals via ZigBee, and then sends to tide remote wireless monitor for acquiring the observed human physiological signals. The remote wireless monitor is constructed of ZigBee and personal computer (PC). The measured signals send to the PC, which can be data collection, analyzing and statistic. When the measured signals over the standard value, the personal computer sends Global System for Mobile Communication (GSM) short message to the manager. The manager can use the PC or personal digital assistant (PDA) to observe the observed human physiological signals in the remote place.

关键词： Zigbee

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2007 international Conference on Intelligent sensors, sensor networks and information processing

2007 International Conference on Intelligent Sensors, Sensor...

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Intelligent sensors, sensor networks and information processing Conference (ISSNIP)

The following topics are dealt: sensor networks; sensor fusion; intelligent sensors; information processing in sensor networks; sensor network security; machine learning and applications; autonomous configuration; control in dynamic wireless networks; middleware; computational intelligence for sensor networks; bio-signal processing and networked sensors in healthcare; environmental sensor networks; and optimization in sensor networks.

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SPACC: A simple positioning and coverage control solution for wireless sensor networks

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5th international symposium on Parallel and Distributed processing and Applications/ISPA 2007 international Workshops

作者： Sharifi, Mohsen Farzad, Ehsan Iran Univ Sci & Technol Dept Comp Engn Univ RdHengam StResalat Sq Tehran Iran

ISBN: (纸本)9783540747413

A category of wireless sensor networks consists of lots of autonomous sensor nodes with limited power and few base stations with theoretically unlimited power. A number of redundant nodes are usually deployed densely in these types of networks in order to provide redundancy for sensing and communications. There is a challenge though of which nodes must be active and which ones must be asleep, without compromising the coverage and network connectivity. To get round this challenge, each node should somehow know the position of its immediate neighbors. Previous researches have impractically assumed the existence of a GPS module in each node, which is in direct contradiction with the main constraints of low cost and size of sensor nodes. This paper proposes an energy saving solution without requiring the nodes to possess any physical GPS. The goal is to minimize the number of active sensors with respect to coverage and connectivity. Each node decides locally by itself whether to be active or not. There is no need for any global synchronization between nodes. Simulation results show that the higher density of nodes in our proposed solution leads to better coverage, higher energy saving and longer network lifetime.

关键词： sensor nodes

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Lucid dreaming: Reliable analog event detection for energy-constrained applications

Lucid dreaming: Reliable analog event detection for energy-c...

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6th international symposium on information processing sensor networks

作者： Jevtic, Sasha Kotowsky, Mathew Dick, Robert R. Dinda, Peter A. Dowding, Charles Northwestern Univ EECS Dept Evanston IL 60208 USA

ISBN: (纸本)9781595936387

Existing sensor network architectures are based on the assumption that data will be polled. Therefore, they are not adequate for long-term battery-powered use in applications that must sense or react to events that occur at unpredictable times. In response, and motivated by a structural autonomous crack monitoring (ACM) application from civil engineering that requires bursts of high resolution sampling in response to aperiodic vibrations in buildings and bridges, we have designed, implemented, and evaluated lucid dreaming, a hardware-software technique to dramatically decrease sensor node power consumption in this and other event-driven sensing applications. This work makes the following main contributions: (1) we have identified the key mismatches between existing, polling-based, sensor network architectures and event-driven applications;(2) we have proposed a hardware-software technique to permit the power-efficient use of sensor networks in event-driven applications;(3) we have analytically characterized the situations in which the proposed technique is appropriate;and (4) we have designed, implemented, and tested a hardware-software solution for standard Crossbow motes that embodies the proposed technique. In the building and bridge structural integrity monitoring application, the proposed technique achieves 1/245 the power consumption of existing sensor network architectures, thereby dramatically increasing battery lifespan or permitting operation based on energy scavenging. We believe that the proposed technique will yield similar benefits in a wide range of applications. Printed circuit board specification files permitting reproduction of the current implementation are available for free use in research and education.

关键词： sensor networks power consumption event detection sensing

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Opportunistic Power Allocation schemes for Wireless sensor networks

Opportunistic Power Allocation schemes for Wireless Sensor N...

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7th IEEE international symposium on Signal processing and information Technology

作者： Matamoros, Javier Anton-Haro, Carles CTTC Barcelona 08860 Spain

ISBN: (纸本)9781424418343

In this paper, we propose and analyze an Opportunistic Power Allocation (OPA) scheme suitable for decentralized parameter estimation in WSNs. In this scheme, only sensors experiencing favorable channels conditions (i.e. above a channel gain threshold) participate in the estimation process by adjusting their transmit power on the basis of local Channel State information (CSI). In particular, we address two different problems: the minimization of distortion under a sum-power constraint, and the minimization of transmit power for a given target distortion. For each design, we (1) derive a closed-form expression of the channel gain threshold on the basis of statistical CSI only, and (2) define the corresponding power allocation rule. Then we assess the performance of the proposed OPA scheme by means of computer simulations, and we carry out a comparison with other water-filling (i.e. optimal) and Uniform Power Allocation (UPA) solutions. Results are given in terms of attained distortion level, transmit power, ability to exploit multi-user diversity and number of FC-sensor channels required.

关键词： Channel state information

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A distributed clustering algorithm for fault-tolerant event region detection in wireless sensor networks

A distributed clustering algorithm for fault-tolerant event ...

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5th international symposium on Parallel and Distributed processing and Applications/ISPA 2007 international Workshops

作者： Abbasi, Ali Ghadimi, Euhanna Khonsari, Ahmad Yazdani, Naser Ould-Khaoua, Mohamed Univ Tehran Dept Elect & Comp Engn Tehran Iran IPM Sch Comp Sci Tehran Iran Univ Glasgow Dept Comp Sci Glasgow Lanark Scotland

ISBN: (纸本)9783540747666

Wireless sensor networks which are envisioned to consist of many simple processing, storage, sensing, and communication capabilities are believed to open the doors to a plethora of new applications. Efficient robust data aggregation is a key feature in information processing in wireless sensor environments, especially in the presence of faulty sensor nodes which arise due to harsh environments or manufacturing reasons. These conditions highly affect the quality of gathering data in different locations and times. In this paper we propose a distributed localized method for detecting regions that are susceptible to message loss above a given threshold, and then based on this method we suggest an algorithm for clustering nodes in that region which proportionally adapts based on message loss. Simulation experiments confirm the validity of the proposed algorithm with a high degree of accuracy.

关键词： Clustering algorithms

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Placement of multiple mobile base stations in wireless sensor networks

Placement of multiple mobile base stations in wireless senso...

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7th IEEE international symposium on Signal processing and information Technology

作者： Alsalih, Waleed Akl, Selim Hassanein, Hossam Queens Univ Sch Comp Kingston ON K7L 3N6 Canada

ISBN: (纸本)9781424418343

Due to energy constraints in individual sensor nodes, extending the lifetime is an essential objective in Wireless sensor networks (WSNs). Several proposals have aimed at that objective by designing energy efficient protocols at the physical, medium access, and network layers. While the proposed protocols achieve significant energy savings for individual sensor nodes, they fail to solve topology-related problems;an example of such problems is that sensor nodes around the base station become bottlenecks and deplete their battery energy much faster than other nodes. A natural solution to such a problem is to have multiple mobile base stations so that the load is distributed evenly among all nodes. Only few proposals have followed that direction. In this paper we propose a mobile base station placement scheme for extending the lifetime of the network. In our scheme the life of the network is divided into rounds and base stations are moved to new locations at the beginning of each round. While previous work has focused on placing the base stations at predefined spots (e.g., the work in [1]) or at the boundary of the network (e.g., the work in [2]), we define and solve a more general problem in which a base station can be placed anywhere in the sensing field. We formulate the problem as an Integer Linear Program (IILP) and use an ILP solver (with a constant time limit) to find a near-optimal placement of the base stations and to find routing patterns to deliver collected data to base stations. Our experiments show that our scheme makes significant extension to the lifetime of the network.

关键词： Base stations

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