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共 226 条记录，以下是81-90 订阅

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IPv4 wireless multimedia sensor networks

IPv4 wireless multimedia sensor networks

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2012 3rd international workshop on Software Engineering for sensor network applications, SESENA 2012

作者： Persia, Samuela Cassioli, Dajana Fondazione Ugo Bordoni Via del Policlinico 147 00161 Rome Italy Computer Science Department University of l'Aquila Via Vetoio 1 - Coppito 67100 L'Aquila Italy

ISBN: (纸本)9781467317931

The acquisition and distribution of multimedia content, such as still images, audio and video streams, are the new frontier of wireless sensor networks (WSNs). Scalar data WSNs commonly rely on the ieee 802.15.4 standard that defines suitable physical and medium access control layers, whereas wireless multimedia sensor networks (WMSNs) need advanced architectures able to maintain a predetermined level of quality of service (QoS). In this paper, we analyze the potential of the combination of IPv4 and the ieee 802.15.4 standard, if employed in the innovative VISION's architecture for WMSNs, designed to support real-time video streaming. We implement IPv4 at the network (NWK) layer, because it is the most suitable protocol to guarantee the interoperability among heterogeneous networks, hence it easily allows the remote access to the WMSN's content. Suitable protocols for network management will provide the relevant performance parameters to the QoS engine of the VISION's architecture that will enable the full adaptability of nodes to the context. Since the main QoS requirements for real time video streaming are the maximum tolerable end-to-end delay and packet loss, our performance evaluation focuses on the analysis of latency and transmitted frames, in the presence of different traffic sources. We also measure the power consumption of WMSN's nodes for the video streaming service. © 2012 ieee.

关键词： Video streaming

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Secure data transmission routing protocol for multicasting

Secure data transmission routing protocol for multicasting

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1st international Conference on Advances in Engineering, Science and Management, ICAESM-2012

作者： Arivazhagan, I. Kurunjimalar, R. Sri Manakula Vinayagar Engineering College Pondicherry University Pondicherry India

ISBN: (纸本)9781467302135

As sensor network edge closer towards wide-spread deployment, security issues become a central concern. So far, more research has focused on making sensor networks for feasible and useful, but not concentrated on security. Recently, technological advancement in the field of nanotechnology have increased the computation power of the wireless nodes while adhering to the energy constraints. This made use of Wireless sensor networks (WSNs), more widespread, used in applications such as area monitoring, industrial monitoring, vehicle detection or military monitoring. SPIN, sensor Protocol for Information via Negotiation, is one of the widely used efficient routing protocol in WSNs that completely ignores the security aspect. SPIN overcome the performance deficiencies of conventional protocols by implementing data negotiation, nodes communicating with each other about the data that they have send already and also the data they still need to obtain, and resource adaption, that is, nodes monitor and adapting to changes in their own energy resources. This project mainly propose an alternate routing protocol which routes the data similar to SPIN, but with additional security features. The energy performance characteristics, large number of nodes and percentage of malicious nodes are compared with SPIN and MS-SPIN in NS2. © 2012 Pillay Engineering College.

关键词： sensor nodes

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iOLSR: OLSR for WSNs using dynamically adaptive intervals 5

iOLSR: OLSR for WSNs using dynamically adaptive intervals

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5th international Conference on sensor Technologies and applications, sensorCOMM 2011 and 1st international workshop on sensor networks for Supply Chain Management, WSNSCM 2011

作者： Larsen, Erlend Flathagen, Joakim Pham, Vinh Landmark, Lars FFI Norway Q2S NTNU Norway

ISBN: (纸本)9781612081441

Proactive link state routing protocols, as used within the Mobile Ad hoc network framework, have not been as successful in wireless sensor networks. This is mainly due to the extensive energy usage by control traffic transmissions and state requirements. However, such protocols are in many situations a more suitable candidate than their counterparts. The benefits are their topology overview, and more importantly the already available spanning trees for information distribution. The high signaling overhead associated with proactive protocols can be reduced by taking advantage of the static nature of wireless sensor networks. In this paper, we investigate how the Optimized Link-state Routing (OLSR) protocol, as a proactive routing protocol candidate, can be adapted to work better in a wireless sensor network environment. The basis for the solution is that control messages are sent with a low frequency when the network is stable, and more often if topology changes occur. The proposed solution is investigated using simulations from no loss to lossy link environments showing promising results.

关键词： Wireless sensor networks

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Survey of energy-saving protocols in wireless sensor networks

Survey of energy-saving protocols in wireless sensor network...

引用

1st international Conference on Robot, Vision and Signal Processing, RVSP 2011

作者： Yi, Xiu-Shuang Jiang, Pei-Jun Wang, Xing-Wei Zhang, Shao-Cheng College of Information Science and Engineering Northeastern University Shenyang Liaoning Province China Network Center Liaoning University Shenyang Liaoning Province China

ISBN: (纸本)9780769545813

This paper introduced the characteristics and applications of wireless sensor networks briefly. With the rapid development of wireless sensor network(WSN) technology, the characteristic of energy limit in WSN has become the utmost concern among people nowadays. According to how to use the limited energy effectively, this paper discuss some typical energysaving protocols in the MAC layer and in the network layer and compare their performances. By analyzing and comparing the advantages and disadvantages of these protocols, it put forward some new research directions of energy strategy and provided a powerful reference for the further application of WSNs. © 2011 ieee.

关键词： Wireless sensor networks

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SAGA: Tracking and Visualization of Building Energy

SAGA: Tracking and Visualization of Building Energy

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1st international workshop on Cyber-Physical Systems, networks, and applications (CPSNA) held during 17th ieee international Conference on Embedded and Real-Time Computing Systems and applications (RTCSA)

作者： Buevich, Maxim Rowe, Anthony Rajkumar, Raj Carnegie Mellon Univ Elect & Comp Engn Dept Pittsburgh PA 15217 USA

ISBN: (纸本)9780769545028

In this paper, we present SAGA, a system for building energy management that provides robust multi-hop wireless sensing, actuation, device management, plotting of historical data and a server backend API to support remote access. Information collected from sensor nodes is stored locally for quick retrieval even if outside network connectivity is lost or unavailable. When network connectivity is available, data is pushed using the eXtensible Message Passing Protocol (XMPP). This enables external server-side archiving of historical events and additional processing as well as secure bi-directional communication from gateways behind firewalls or with dynamic IP address like those found in broadband connected homes. SAGA provides a web interface that allows devices to be easily configured with aliases and grouped together based on sensor type. Individual and groups of sensors can be plotted to show relative comparisons of different sensor values. For example, selecting to plot a group of energy metering devices shows the overall distribution of energy consumption per-device. A local multi-resolution storage system provides optimized access to recent high-resolution data along with quick retrieval of pre-computed long-term averages. SAGA has been deployed in three homes around the Pittsburgh area, collecting data for more than two years.

关键词： Buildings IP networks Internet Logic gates Peer to peer computing protocols SAGA sensors Web interface Wireless communication Wireless sensor networks actuation application program interfaces bidirectional communication security building energy management building energy tracking building energy visualization building management systems device management dynamic IP address energy consumption energy consumption energy control energy management systems energy metering devices energy monitoring extensible message passing protocol external server-side archiving firewall gateway historical data plotting historical events local multiresolution storage system message passing network connectivity network servers power meters protocols remote access robust multihop wireless sensing sensor type server backend API telecommunication security tracking wireless sensor networks wireless sensor networks

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Benchmarking for Wireless sensor networks 5

Benchmarking for Wireless Sensor Networks

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5th international Conference on sensor Technologies and applications (sensorCOMM) / 1st international workshop on sensor networks for Supply Chain Management (WSNSCM)

作者： Vanhie-Van Gerwen, Jono Bouckaert, stefan Moerman, Ingrid Demeester, Piet Univ Ghent IBBT Dept Informat Technol INTEC Ghent Belgium

ISBN: (纸本)9781612081441

While the number of Wireless sensor network (WSN) protocols steadily increases, the evaluation methods have largely remained the same. Although experimentally-supported research is gaining popularity, protocol evaluation and comparison remains difficult due to a lack of performance analysis methodologies. This work introduces a wireless-benchmarking workflow that is designed to support experimentally-driven analysis of WSN protocols. This methodology and the accompanying benchmark concepts are designed to increase the value of experimental performance evaluation compared to the current ad-hoc approaches applied by many researchers. Finally, we present a proof of concept implementation used to perform experiments based on the proposed workflow.

关键词： Wireless sensor networks benchmarking performance evaluation

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A routing protocol for WSN based on the implementation of source routing for minimum cost forwarding method 5

A routing protocol for WSN based on the implementation of so...

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5th international Conference on sensor Technologies and applications, sensorCOMM 2011 and 1st international workshop on sensor networks for Supply Chain Management, WSNSCM 2011

作者： Derogarian, Fardin Ferreira, João Canas Tavares, Vítor M. Grade MAP-Tele INESC Porto Faculdade de Engenharia Universidade do Porto Porto Portugal INESC Porto Faculdade de Engenharia Universidade do Porto Porto Portugal

ISBN: (纸本)9781612081441

This paper presents a routing protocol for wireless sensor networks (WSN), established on the basis of fundamental concepts in source based routing (SBR) for ad hoc networks and minimum cost forwarding (MCF) methods for heterogeneous WSNs. Neither routing tables nor network topology information is maintained at sensor level, which makes the proposed protocol part of the reactive routing protocols class. Despite the lack of network information at the sensor, the packets from the sink node to sensors, and viceversa, always follow the optimal communication path with minimum cost. Simulation results have shown that the proposed protocol performs better than MCF protocol alone, and nodes always route the packets through the optimal path up to destination. In fact, according to the energy consumption and throughput found by simulation, this protocol improves on the MCF protocol for applications where the sink node, acting as a server or base station (BS), generates significant amounts of network traffic. All results are based on simulations and data treatment performed with OMNet++ 4, Matlab 7 and Microsoft Visual studio2010(C#) platform tools.

关键词： Routing protocols

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Implementing Recovery in Low-Resource stationary Wireless sensor networks

引用

3rd international Conference on Wireless, Mobile networks, and applications/1st international Conference on Computer Science, Engineering and applications

作者： Li, Bai Batten, Lynn Margaret Doss, Robin Deakin Univ Melbourne Vic Australia

ISBN: (纸本)9783642211522

Implementation of certain types of protocols on wireless sensor networks (WSNs) can be difficult due to the architecture of the motes. Identification of these issues and recommendations for workarounds can be very useful for the WSN research community testing hardware. In recent work, the authors developed and implemented clustering, reprogramming and authentication protocols involved in recovering WSNs with low resources. In attempting to integrate these protocols, several issues arose in the implementation phase connected to pre-set configurations of the motes used. In this paper, we describe the issues arising in integrating our protocols using Zigbee with ieee 802.15.4 and the reprogramming module Deluge, and compare our challenges and solutions with those faced by other researchers in this area. Finally, we provide recommendations for consideration by researchers who may in future consider integrating several protocols on these platforms.

关键词： Wireless sensor network recovery protocol implementation

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Energy-aware Clustering with Variable Ranges in Wireless sensor networks 5

Energy-aware Clustering with Variable Ranges in Wireless Sen...

引用

5th international Conference on sensor Technologies and applications (sensorCOMM) / 1st international workshop on sensor networks for Supply Chain Management (WSNSCM)

作者： Bagci, Faruk German Univ Cairo Dept Comp Sci & Engn Cairo Egypt

ISBN: (纸本)9781612081441

Traditional wireless devices communicate directly with a beacon or base station located in range of the device. Multi-hop messages are still a rarity in wireless communication. Wireless sensor network protocols often are based on peer-to-peer infrastructure, where messages traverse long distances through the network to reach a certain destination. A flat infrastructure is hard to manage regarding routing and scalability, if number of nodes increase drastically. Because of battery operated nodes, energy-effective mechanisms are very important in wireless sensor networks. Clustering brings hierarchy into the network and can save energy since nodes within a cluster usually communicate locally in a short range. Messages sent to large distances are handled by cluster-heads routing them through an inter-cluster backbone. A heterogeneous infrastructure with a large number of simple and cheap sensor nodes and only a small percentage of more powerful cluster-heads is beneficial but not necessary. This paper presents a new clustering approach called Variable Ranges Protocol that provides basic features to modify the range of each node. A dynamic transmission range adaption protocol substantially prolongs the lifetime of the nodes through energy efficient communication without significantly decreasing the node connectivity. The VR protocol is implemented combining several MAC protocols for local communication within a cluster.

关键词： Wireless sensor network cluster architecture energy efficiency connectivity wireless communication

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An Effective Mechanism for Handling Open Voids in Wireless sensor networks 5

An Effective Mechanism for Handling Open Voids in Wireless S...

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5th international Conference on sensor Technologies and applications (sensorCOMM) / 1st international workshop on sensor networks for Supply Chain Management (WSNSCM)

作者： Aissani, Mohamed Bouznad, Sofiane Hariza, Abdelmalek Allia, Salah-Eddine Polytech Mil Sch EMP Lab Res Artificial Intelligence POB 17 Algiers 16111 Algeria

ISBN: (纸本)9781612081441

Open voids are often formed on the boundary of a deployed wireless sensor network (WSN). Geographical routing protocols must handle these voids where packets fall into local minima. To contribute on resolving this problem, we propose in this paper an effective mechanism for handling this kind of voids. It uses two simple and effective algorithms ensuring discovery and maintenance of the network boundary. Contrary to existing void-handling techniques, our proposal uses the information about this boundary and the destination node for better directing data packets in optimal paths. Thus, open voids are avoided with great efficiency. The proposed mechanism has good performances in terms of packet delivery ratio, average routing path length, boundary energy consumed per delivered packet and average residual deadline of all delivered packets.

关键词： sensor networks geographical routing open voids void-handling techniques

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