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IET Wireless sensor networks conference

作者： Babb, Derek University of Surrey Centre for Communication Systems Research Guildford United Kingdom

ISBN: (纸本)0863417051

This paper discusses the e-SENSE project, which is the next generation wireless sensor networks. The e-SENSE system will use a combination of enabling technologies, provide seamless and nomadic user access to new classes of applications, capture an unprecedented level of detail of context, use body, object and environment sensor networks, and interact with and link to beyond 3G network and service platforms. Some of the e-SENSE research challenges are presented.

关键词： Wireless sensor networks

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EAGR: Energy Aware Greedy Routing in sensor networks

EAGR: Energy Aware Greedy Routing in sensor networks

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International conference on Future generation communication Networking

作者： Haider, Razia Javed, Muhammad Younas Khattak, Naveed S. Natl Univ Sci & Technol Mil Coll Signals Dept Comp Sci Rawalpinid Pakistan Natl Univ Sci & Technol E&ME Coll Dept Comp Sci Rawalpinid Pakistan

ISBN: (纸本)0769530486

The energy efficiency is one of the key concerns in sensor networks for their better performance, as sensor nodes are limited in their battery power. In this paper, a location based algorithm, EAGR (Energy Aware Greedy Routing), is presented for sensor networks to extend the lifetime of the network and to get the higher data delivery rate and to balance the energy consumption of nodes. In EAGR, each node makes the local decision to choose its next hop. This algorithm works on forwarding rule based on location and energy levels of nodes. Each node knows its own geographic location & its energy levels and the location & energy level of its neighbors. The transmitting node writes the geographic position of destination into the packet header and forwards it to the destination by establishing the sub-destinations. Now these sub-destination nodes should be alive and geographically near to the destination node to route the packet by choosing the shortest and reliable path. Simulation results show that the proposed algorithm gives the better performance in terms of higher data delivery rate and less number of dead nodes. Consequently, EAGR can effectively increase the lifetime of the network.

关键词： sensor networks energy-efficient geographical routing algorithm

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Toward Controlling Perturbations in Robotic sensor networks

Toward Controlling Perturbations in Robotic Sensor Networks

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conference on next-generation Robots and Systems

作者： Banerjee, Ashis Gopal Majumder, Saikat Ray Gen Elect Global Res Niskayuna NY 12309 USA

ISBN: (纸本)9781628410532

Robotic sensor networks (RSNs), which consist of networks of sensors placed on mobile robots, are being increasingly used for environment monitoring applications. In particular, a lot of work has been done on simultaneous localization and mapping of the robots, and optimal sensor placement for environment state estimation(1). The deployment of RSNs, however, remains challenging in harsh environments where the RSNs have to deal with significant perturbations in the forms of wind gusts, turbulent water flows, sand storms, or blizzards that disrupt inter-robot communication and individual robot stability. Hence, there is a need to be able to control such perturbations and bring the networks to desirable states with stable nodes (robots) and minimal operational performance (environment sensing). Recent work has demonstrated the feasibility of controlling the non-linear dynamics in other communication networks like emergency management systems and power grids by introducing compensatory perturbations to restore network stability and operation(2). In this paper, we develop a computational framework to investigate the usefulness of this approach for RSNs in marine environments. Preliminary analysis shows promising performance and identifies bounds on the original perturbations within which it is possible to control the networks.

关键词： sensor networks autonomous underwater vehicles acoustic communication decentralized control non-linear dynamics

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QuESt: a QoS-based energy efficient sensor routing protocol

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WIRELESS communicationS & MOBILE COMPUTING 2009年第3期9卷 417-426页

作者： Saxena, Navrati Roy, Abhishek Shin, Jitae Sungkyunkwan Univ Sch Informat & Commun Engn Suwon 440746 South Korea Samsung Elect WiBro Syst Lab Suwon South Korea

Rapid penetration of smart wireless devices and enormous growth of wireless communication technologies has already set the stage for deployment of wireless sensor networks (WSNs). While these small sensor nodes are often considered as the future of wireless communications, they also Suffer from energy constraints. On the other hand. with increasing demand for real-time services in next generation wireless networks, quality-of-service (QoS)-based routing has emerged as an interesting research topic. Naturally offering some QoS-guarantee in sensor networks raises significant challenges. The network needs to cope up with battery-constraints, while providing precise QoS (end-to-end delay and bandwidth requirement) guarantee. More precisely, designing such QoS-protocols, optimizing multiple objectives, is computationally intractable. Based on the multi-objective genetic algorithm (MOGA), in this paper we propose a QoS-based energy-efficient sensor rowing (QuESt) protocol that determines application-specific, near-optimal sensory-routes demand, by optimizing multiple QoS parameters, (end-to-end delay and bandwidth requirements) and energy consumption. Simulation results demonstrate that the proposed protocol is capable of discovering a set of QoS-based, near-optimal routes, even with imprecise network information. Copyright (C) 2007 John Wiley & Sons, Ltd.

关键词： sensor networks multi-objective genetic algorithm QoS routing

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A power-balancing scheme for clustered wireless sensor networks

A power-balancing scheme for clustered wireless sensor netwo...

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International conference on Future generation communication Networking

作者： Wang, Dajin Montclair State Univ Dept Comp Sci Montclair NJ 07043 USA

No abstract available

ISBN: (纸本)9780769530482

No abstract available

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State-Centric Multi-sensor Scheduling for Target Tracking in Wireless sensor networks

State-Centric Multi-Sensor Scheduling for Target Tracking in...

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6th International conference on Information, communications and Signal Processing

作者： Lin, Jinyong Xie, Lihua Xiao, Wendong Nanyang Technol Univ Sch Elect & Elect Engn Singapore Singapore Inst Infocomm Res Networking Protocols Dept Singapore Singapore

ISBN: (纸本)9781424409822

In current sensor scheduling schemes for target tracking in Wireless sensor networks (WSNs), either based on single sensor or multiple sensors, a next tasking sensor is selected from 1-hop communication neighbors of the current tracking leader. They will fail when the target moves fast and outside the detection range of any neighbor at the next time step. In this paper a novel state-centric multi-sensor scheduling scheme (SCMSS) is presented where the multiple next tasking sensors are selected from those sensors, according to the state prediction of the target movement, that likely detect the target at the next time step. Information is exchanged between the current tracking leader and the next tasking sensors via single-hop or multi-hop minimal energy paths. A sensor that will consume minimum energy for collecting next measurements is selected from the tasking group as the new tracking leader. Simulation results show that, compared with multi-sensor scheduling algorithm with single hop configuration, SCMSS can achieve better performance with less energy cost for different target speeds.

关键词： wireless sensor networks sensor scheduling target tracking multi-hop transmission

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Localization for large-scale underwater sensor networks

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6th International IFIP-TC 6 Networking conference

作者： Zhou, Zhong Cui, Jun-Hong Zhou, Shengli Univ Connecticut Dept Comp Sci & Engn Storrs CT 06269 USA Univ Connecticut Dept Elect & Comp Engn Storrs CT 06269 USA

ISBN: (纸本)97830540726050

In this paper, we study the localization problem in large-scale underwater sensor networks. The adverse aqueous environments, the node mobility, and the large network scale all pose new challenges, and most current localization schemes are not applicable. We propose a hierarchical approach which divides the whole localization process into two sub-processes: anchor node localization and ordinary node localization. Many existing techniques can be used in the former. For the ordinary node localization process, we propose a distributed localization scheme which novelly integrates a 3-dimensional Euclidean distance estimation method with a recursive location estimation method. Simulation results show that our proposed solution can achieve high localization coverage with relatively small localization error and low communication overhead in large-scale 3-dimensional underwater sensor networks.

关键词： Wireless sensor networks

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Applying anticipated vertical handover (AVHO) in next generation networks

Applying anticipated vertical handover (AVHO) in next genera...

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4th European conference on Universal Multiservice networks

作者： Akkari, Nadine Tohme, Samir Doughan, Mahmoud Ecole Natl Super Telecommun Bretagne INFRES Paris France Univ Versailles St Quentin Paris France Lebanese Univ Fac Engn Beirut Lebanon

ISBN: (纸本)9780769527680

This paper describes an anticipated mobility between the two access technologies WLAN and UNITS considered as complementary technologies for next generation networks integration. We propose to apply Anticipated Vertical Handover (AVHO) in the integration of the third generation wireless communication (3G) from one side and WLAN 802.11 from the other side. The proposed AVHO offers mobile users, roaming in next generation networks, fast handover based on a pre-network selection such as the "make-before-break" approach used in fast MIP handovers. AVHO is adopted in the context of WLAN to UNITS handovers and vice versa to ensure service continuity with minimum HO latency and packet loss.

关键词： AVHO mobility management

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Network gossip algorithms

Network gossip algorithms

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IEEE International conference on Acoustics, Speech and Signal Processing

作者： Shah, Devavrat MIT Informat & Decis Syst Lab Cambridge MA 02139 USA

ISBN: (纸本)9781424423538

Unlike the Telephone network or the Internet, many of the next generation networks are not engineered for the purpose of providing efficient communication between various networked entities. Examples abound: sensor networks, peer-to-peer networks, mobile networks of vehicles and social networks. Indeed, these emerging networks do require algorithms for communication, computation, or merely spreading information. For example, estimation algorithms in sensor networks, broadcasting news through a peer-to-peer network, or viral advertising in a social network. These networks lack infrastructure;they exhibit unpredictable dynamics and they face stringent resource constraints. Therefore, algorithms operating within them need to be extremely simple, distributed, robust against network dynamics, and efficient in resource utilization. Gossip algorithms, as the name suggests, are built upon a gossip or rumor style unreliable, asynchronous information exchange protocol. Due to their immense simplicity and wide applicability, this class of algorithms has emerged as a canonical architectural solution for the next generation networks. This has led to exciting recent progress to understand the applicability as well as limitations of the Gossip algorithms. In this survey, I will discuss some of these recent results on Gossip network algorithms. The algorithmic results described here in a natural way bring together tools and techniques from Markov chain theory, Optimization, Percolation, Random graphs, Spectral graph theory, and Coding.

关键词： Peer to peer networks

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A Practical Implementation of a Cooperative Antenna Array for Wireless sensor networks 15th

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15th International conference on next-generation Wired/Wireless Advanced networks and Systems (NEW2AN) and 8th conference on Internet of Things and Smart Spaces (ruSMART)

作者： de Freitas, Edison Pignaton Miranda, Ricardo Kehrle Marinho, Marco Carvalho Lustosa da Costa, Joao Paulo Pereira, Carlos Eduardo Univ Fed Rio Grande do Sul Inst Informat Porto Alegre RS Brazil Univ Fed Rio Grande do Sul Sch Engn Porto Alegre RS Brazil Univ Brasilia Dept Elect Engn Brasilia DF Brazil

ISBN: (纸本)9783319231266;9783319231259

Energy consumption is a key issue to be handled in Wireless sensor networks, especially considering low-end sensor nodes, i.e. sensor with severe energy resources limitations. When sensor nodes have their energy resources depleted, they stop working which can compromise the whole network functioning, thus its lifetime. As communication is the most energy-consumption task, enhancements in communication that diminish the amount of messages lost and the need for retransmissions are very important to preserve energy resources and extend the network lifetime. Considering the impact of the energy preservation and the opportunity to exploit it in terms of communication, this paper discusses the practical implementation of a cooperative MIMO scheme based on virtual antenna array using sensor nodes in order to enhance data communication in wireless sensor networks. The conducted experiments present evidence of the feasibility of the proposed approach highlighting performance aspects.

关键词： Wireless sensor networks Cooperative antenna array Cooperative multiple input multiple output Energy efficiency

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