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检索条件"任意字段=IEEE International Conference on Distributed Computing in Sensor Systems DCoSS"

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Managing and Deployment of Applications with OSGi in the Context of Smart Home

Managing and Deployment of Applications with OSGi in the Con...

引用

ieee international conference on Wireless and Mobile computing, Networking And Communications (WiMob)

作者： Charles Gouin-Vallerand Sylvain Giroux DOMUS Laboratory Université de Sherbrook Canada

The presence of a multitude of heterogeneous devices in a smart home environment create a whole puzzle when comes the time to deploy, update, or manage applications on these devices. The configuration and the updating of applications in that context can be expensive, as well as resource and time consuming, especially when there are several similar environments to implement. This paper considers those problems, brings a glimpse on possible solutions, and proposes the use of the OSGi framework to ease the deployment and the management of applications. Moreover this paper presents a summary of a distributed system currently in last phase of development that will resolve the proposed problematic. This system allows the remote managing and deployment in the context of a distributed and pervasive environment for cognitively impaired people.

关键词： Smart homes Environmental management Mobile computing Personal digital assistants Embedded system Intelligent sensors sensor systems Telecommunications Technological innovation Application software

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Passive inspection of sensor networks 07

引用

Proceedings of the 3rd ieee international conference on distributed computing in sensor systems

作者： Matthias Ringwald Kay Römer Andrea Vitaletti Institute for Pervasive Computing ETH Zurich Switzerland Department of Informatics University of Rome "La Sapienza" Italy

ISBN: (纸本)9783540730897

Deployment of sensor networks in real-world settings is a labor-intensive and cumbersome task: environmental influences often trigger problems that are difficult to track down due to limited visibility of the network state. In this paper we present a framework for passive inspection (i.e., no instrumentation of sensor nodes required) of deployed sensor networks and show how this framework can be used to inspect data gathering applications. The basic approach is to temporarily install a distributed network sniffer alongside the inspected sensor network, with overheard messages being analyzed by a data stream processor and network state being displayed in a graphical user interface. Our tool can be flexibly applied to different sensor network operating systems and protocol stacks, and can deal well with incomplete information.

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distributed Collaborative Adaptive Sensing: A Unifying Theme for a Junior Level Embedded systems Course.

Distributed Collaborative Adaptive Sensing: A Unifying Theme...

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ieee international conference on Microelectronic systems Education

作者： Dhruv Kumar Wayne Burleson Electrical and Computer Engineering University of Massachusetts Amherst USA

ISBN: (纸本)9780769528496;076952849X

A new junior level embedded systems course uses the notion of distributed Collaborative Adaptive Sensing as a unifying theme. The content of the course is inspired by research in weather radar networks but is mapped to an imaging system for a more manageable and tangible application. "Big-picture" lectures present concepts and applications in modern embedded systems. The labs involve problem solving in sensor data acquisition, signal processing and networked computing. The Altera DE2 board with System on Programmable Chip (SOPC) development platform, the NIOS softcore [1] and other peripherals is used along with a digital camera [7]. Assessment of the outcomes and impressions of the course indicates a significant improvement over a more traditional embedded systems course. The course materials are available online [2].

关键词： Collaboration Embedded system Meteorological radar Computer network management Content management Problem-solving Data acquisition Radar signal processing Computer networks Digital cameras

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Improving the Precision on Multi Robot Localization by Using a Series of Filters Hierarchically distributed

Improving the Precision on Multi Robot Localization by Using...

引用

2007 ieee/RSJ international conference on Intelligent Robots and systems

作者： Agostino Martinelli E motion Group Inria Rhône Alpes Saint Ismier France Autonomous System Laboratory ETH Zurich Switzerland

This paper introduces a new approach to the problem of simultaneously localizing a team of mobile robots equipped with proprioceptive sensors able to monitor their motion and with exteroceptive sensors able of sensing one another. The method is based on a series of extended Kalman filters hierarchically distributed. In particular, the team is decomposed in several groups and, for each group, an extended Kalman filter estimates the configurations of all the members of the group in a local frame attached to one robot, the group leader. Finally, at the highest level of the hierarchy, one single filter estimates the locations of all the group leaders. The key advantage of this approach is its ability to distribute the computation necessary to perform the multi robot localization under limited computation and communication capabilities. In particular, the approach significantly outperforms an optimal approach based on a single estimator. This is shown by analytically computing the precision on the localization of each robot in the case of one single degree of freedom. In particular, the best hierarchy is analytically determined by deriving the dependency of the localization precision on the communication and computation capabilities and on the sensors accuracy.

关键词： Robot localization Robot sensing systems Mobile robots sensor systems Monitoring distributed computing Information filters Frequency Intelligent robots USA Councils

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Particle Filtering for Target Tracking with Mobile sensors

Particle Filtering for Target Tracking with Mobile Sensors

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international conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Yao Li Petar M. Djuric Department of Electrical and Computer Engineering Stony Brook University Stony Brook NY USA

Recent progress in distributed robotics and low power embedded systems has led to development of mobile sensor networks. Controlled mobility, moving sensors intentionally, enables a new set of possibilities in wireless sensor networks and facilitates many applications in signal processing areas such as target tracking. In this paper we consider the problem of tracking a target using three mobile sensors that measure the received signal strength (RSS) from the target. We propose the use of particle filtering where the positioning of the mobile sensor is based on the predicted target's positions. In deciding how to deploy the sensors, we have used the Cramer-Rao lower bound (CRLB) that we have derived for our scheme. The performance of the method is investigated by simulations and compared to tracking by traditional static sensor network.

关键词： Filtering Target tracking Wireless sensor networks sensor systems sensor fusion Mobile computing Mobile robots Robot sensing systems Embedded system Radio frequency

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C2AP: Coverage-aware and Connectivity-constrained Actor Positioning in Wireless sensor and Actor Networks

C2AP: Coverage-aware and Connectivity-constrained Actor Posi...

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ieee international conference on Performance, computing and Communications (IPCCC)

作者： K. Akkaya M. Younis Department of Computer Science Southem Illinois University Carbondale IL USA Department of Computer Science & Electrical Engineering University of Maryland Baltimore County Baltimore MD USA

In addition to the miniaturized sensor nodes, wireless sensor and actor networks (WSANs) employ significantly more capable actor nodes that can perform application specific actions to deal with events detected and reported by the sensors. Since these actions can be taken at any spot within the monitored area, the actors should be carefully placed in order to provide maximal coverage. Moreover, the actors often coordinate among themselves in order to arbitrate tasks and thus inter-actor connectivity is usually a requirement. In this paper, we propose a distributed actor positioning algorithm that maximizes the coverage of actors without violating the connectivity requirement. The approach applies repelling forces between neighboring actors, similar to molecular particles in Physics, in order to spread them in the region. However, the movement of each actor is restricted in order to maintain the connectivity of the inter-actor network. The performance of the approach is validated through simulations.

关键词： Wireless sensor networks Monitoring Physics Fires Extraterrestrial measurements Pollution measurement Robot sensing systems Computer science Application software Event detection

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Self-Configuring Information Management for Large-Scale Service Overlays

Self-Configuring Information Management for Large-Scale Serv...

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ieee Annual Joint conference: INFOCOM, ieee Computer and Communications Societies

作者： J. Liang X. Gu K. Nahrstedt Department of Computer Science University of Illinois Urbana-Champaign Urbana IL USA Department of Distributed Computing IBM Thomas J. Watson Research Center Hawthorne NY USA

Service overlay networks (SON) provide important infrastructure support for many emerging distributed applications such as web service composition, distributed stream processing, and workflow management. Quality-sensitive distributed applications such as multimedia services and on-line data analysis often desire the SON to provide up-to-date dynamic information about different overlay nodes and overlay links. However, it is a challenging task to provide scalable and efficient information management for large-scale SONs, where both system conditions and application requirements can change over time. In this paper, we present InfoEye, a model-based self-configuring distributed information management system that consists of a set of monitoring sensors deployed on different overlay nodes. InfoEye can dynamically configure the operations of different sensors based on current statistical application query patterns and system attribute distributions. Thus, InfoEye can greatly improve the scalability of SON by answering information queries with minimum monitoring overhead. We have implemented a prototype of InfoEye and evaluated its performance using both extensive simulations and micro-benchmark experiments on PlanetLab. The experimental results show that InfoEye can significantly reduce the information management overhead compared with existing approaches. In addition, InfoEye can quickly reconfigure itself in response to application requirement and system information pattern changes.

关键词： Information management Large-scale systems Streaming media sensor phenomena and characterization Web services Data analysis sensor systems sensor systems and applications Scalability Monitoring

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A Tree-based Channel Assignment Scheme for Wireless Mesh Networks

A Tree-based Channel Assignment Scheme for Wireless Mesh Net...

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

作者： Weihuang Fu Bin Xie Dharma P. Agrawal Anup Kumar OBR Center of Distributed and Mobile Computing Department of Computer Science University of Cincinnati Cincinnati OH USA Computer Engineering and Computer Science Department2 University of Louisville Louisville KY USA

Unlike ad hoc networks where traffic is randomly distributed among every pair of nodes, the traffic in wireless mesh networks (WMNs) is predominantly toward or from the Internet Gateways (IGWs)for Internet services. Due to this, interference and collision are more serious in the Mesh Router (MRs) closer to the IGWs and the Internet throughput of the network is limited by the number of orthogonal channels and radios of the IGW. In this paper, we propose a channel assignment scheme which exploits a tree-based topology in WMNs and implements a heuristic channel assignment algorithm, aiming to achieve the maximal Internet throughput. The channels are sequentially assigned level by level in the tree, starting from the IGW. The simulation results show that the network using this scheme achieve the Internet throughput close to the maximal capacity of IGW.

关键词： Wireless mesh networks IP networks Throughput Telecommunication traffic Web and internet services Ad hoc networks Interference Road accidents Network topology Heuristic algorithms

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Network Connectivity under Probabilistic Communication Models in Wireless sensor Networks

Network Connectivity under Probabilistic Communication Model...

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

作者： Mohamed Hefeeda Hossein Ahmadi School of Computing Science Simon Fraser University Surrey UK

Several previous works have experimentally shown that communication ranges of sensors are not regular disks. Rather, they follow probabilistic models. Yet, many current connectivity maintenance protocols assume the disk communication model for convenience and ease of analysis. In addition, current protocols do not provide any assessment of the quality of communication between nodes. In this paper, we take a first step in designing connectivity maintenance protocols for more realistic communication models. We propose a distributed connectivity maintenance protocol that explicitly accounts for the probabilistic nature of communication links and achieves a given target communication quality between nodes. Our protocol is simple to implement, and we demonstrate its robustness against random node failures, inaccuracy of node locations, and imperfect time synchronization of nodes using extensive simulations. We compare our protocol against others in the literature and show that it activates fewer number of nodes, consumes much less energy, and significantly prolongs the network lifetime.

关键词： Wireless sensor networks Robustness Computer networks Performance analysis Wireless application protocol Lattices

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Efficient Mesh Router Placement in Wireless Mesh Networks

Efficient Mesh Router Placement in Wireless Mesh Networks

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

作者： Junfang Wang Bin Xie Kan Cai Dharma P. Agrawal OBR Center of Distributed and Mobile Computing Department of Computer Science University of Cincinnati Cincinnati OH USA Department of Computer Science University of British Columbia Vancouver BC Canada

The placement of mesh routers (MRs) in building a wireless mesh network (WMN) is the first step to ensure the desired network performance. Given a network domain, the fundamental issue in placing MRs is to find the minimal configuration of MRs so as to satisfy the network coverage, connectivity, and Internet traffic demand. In this paper, the problem is addressed under a constraint network model in which the traffic demand is non-uniformly distributed and the candidate positions for MRs are pre-decided. After formulating the MR placement problem, we first provide the theoretical analysis to validate the traffic demand and determine the optimal position of Internet gateway (IGW). To reduce complexity of determining the locations of MRs while satisfying the traffic constraint, we propose an effective heuristic algorithm to obtain an close-to-optimal solution. Finally, our simulation results verify our analytical model and show the effectiveness of our proposed algorithm.

关键词： Wireless mesh networks Traffic control Telecommunication traffic Internet Throughput Computer science Heuristic algorithms Analytical models Interference constraints Costs

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