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Guest editorial emerging circuits and systems techniques for ultra-low power body sensor networks

IEEE Journal on Emerging and Selected Topics in Circuits and Systems 2012年第1期2卷 1-3页

作者： Calhoun, Benton Chandrakasan, Anantha P. Otis, Brian Verma, Naveen Yoo, Hoi-Jun Department of Electrical and Computer Engineering University of Virginia Charlottesville VA 22904 United States Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA 02139 United States Department of Electrical Engineering University of Washington Seattle WA 98195 United States Department of Electrical Engineering Princeton University Princeton NJ 08540 United States Department of Electrical Engineering Korea Advanced Institute of Science and Technology Daejeon 08540 Korea Republic of

This special issue brings together 11 papers on approaches spanning circuits, architectures, algorithms, and system design that demonstrates promising solutions to emerging critical problems in body sensor networks.

关键词： Special issues and sections Low-power electronics Body sensor networks

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Combined contention and TDMA-based communication in wireless sensor networks

Combined contention and TDMA-based communication in wireless...

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conference on next generation Internet networks, NGI

作者： Vicente Casares-Giner Patrick Wüchner Diego Pacheco-Paramo Hermann de Meer Universitat Politècnica de València Spain Department of Informatics and Mathematics University of Passau Germany

Wireless sensor networks usually consist of a large number of very small, energy-constrained sensor nodes. The nodes capture information from their immediate environment to send it to a destination node (sink) in a timely manner. This work proposes a combined contention and TDMA-based approach for load balancing and a discrete-time Markov model that allows to study the trade-off between energy consumption and transfer delay in clustered wireless sensor networks. Our investigations show that the length of the TDMA frame needs to be configured close to the minimum that is capable of transferring the offered load for optimizing energy efficiency and minimizing the delay.

关键词： Time division multiple access Wireless sensor networks Protocols Energy consumption Delay Switches next generation networking

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Applying MIMO techniques to minimize energy consumption for long distances communications in wireless sensor networks

Applying MIMO techniques to minimize energy consumption for ...

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Joint Proceedings of the 12th International conference on next-generation Teletraffic and Wired/Wireless Advanced Networking, NEW2AN 2012 and 5th conference on Internet of Things and Smart Spaces, ruSMART 2012

作者： De Freitas, Edison Pignaton Da Costa, João Paulo C. Lustosa De Almeida, André Lima F. Marinho, Marco Department of Electrical Engineering University of Brasília Brasília Brazil Institute of Informatics Federal University of Rio Grande Do Sul Brazil Teleinformatics Engineering Department Federal University of Ceará Brazil Brazilian Army Center of Technology Brazilian Army Brazil

ISBN: (纸本)9783642326851

This paper explores the usage of cooperative multiple input multiple output (MIMO) technique to minimize energy consumption used to establish communications among distant nodes in a wireless sensor network (WSN). As energy depletion is an outstanding problem in WSN research field, a number of techniques aim to preserve such resource, especially by means of savings during communication among sensor nodes. One such wide used technique is multi-hop communication to diminish the energy required by a single node to transmit a given message, providing a homogeneous consumption of the energy resources among the nodes in the network. However, it is not the case that multi-hop is always more efficient than single-hop, even that it may represent a great depletion of a single node's energy. In this paper a cooperative MIMO transmission technique for WSN is presented, which is compared to single-hop and multi-hop transmission ones, highlighting its advantages in relation to both. Simulation results support the statement about the utility in applying the proposed technique for energy saving purposes. © 2012 Springer-Verlag.

关键词： Energy efficiency

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AN INTELLIGENT sensor FRAMEWORK FOR THE POWER GRID

AN INTELLIGENT SENSOR FRAMEWORK FOR THE POWER GRID

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ASME 5th International conference on Energy Sustainability

作者： Akyol, Bora Haack, Jereme Tews, Cody Carpenter, Brandon Kulkarni, Anand Craig, Philip Pacific NW Natl Lab Richland WA 99352 USA

ISBN: (纸本)9780791854686

The number of sensors connected to the electric power system is expected to grow by several orders of magnitude by 2020. However, the information networks which will transmit and analyze the resulting data are ill-equipped to handle the resulting volume with reliable real-time delivery. Without the ability to manage and use this data, deploying sensors such as phasor measurement units in the transmission system and smart meters in the distribution system will not result in the desired improvements in the power grid. The ability to exploit the massive data being generated by new sensors would allow for more efficient flow of power and increased survivability of the grid. Additionally, the power systems of today are not capable of managing two-way power flow to accommodate distributed generation capabilities due to concerns about system stability and lack of system flexibility. The research that we are performing creates a framework to add "intelligence" to the sensors and actuators being used today in the electric power system. sensors that use our framework will be capable of sharing information through the various layers of the electric power system to enable two-way information flow to help facilitate integration of distributed resources. Several techniques are considered including use of peer-to-peer communication as well as distributed agents. Specifically, we will have software agents operating on systems with differing levels of computing power The agents will cooperate to bring computation closer to the data. The types of computation considered are control decisions, data analysis, and demand/response. When paired with distributed autonomous controllers, the sensors form the basis of an information system that supports deployment of both micro-grids and islanding. Our efforts in the area of developing the next generation information infrastructure for sensors in the power grid form the basis of a broader strategy that enables better integration of distributed

关键词： Distributed power generation

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Beacon-enabled cognitive access for dynamic spectrum access

Beacon-enabled cognitive access for dynamic spectrum access

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conference on next generation Internet networks, NGI

作者： Said Rutabayiro Ngoga Yong Yao Adrian Popescu School of Computing Blekinge Institute of Technology Karlskrona Sweden

In dynamic spectrum access networks, the unused licensed spectrum used by primary users (PU) is opened to unlicensed secondary users (SU) for improving spectrum efficiency. We design a simple time-based threshold policy for collective protection of PUs, enabled by an out-of-band channel. In particular, multiple SUs may be widely distributed in a geographic location. The interference that collocated SUs cause to each other, termed self-interference, becomes a major source that may degrade the SUs communication performance. We establish an analytical framework for carrier sense multiple access (CSMA) based coexistence mechanisms when integrated into a family of time based threshold policies, and study its performance though theoretical analysis.

关键词： sensors Multiaccess communication next generation networking Internet Throughput Data communication Wireless sensor networks

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Real-time multimedia monitoring in large-scale wireless multimedia sensor networks: Research challenges

Real-time multimedia monitoring in large-scale wireless mult...

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conference on next generation Internet networks, NGI

作者： Matteo Cesana Alessandro Redondi Nestor Tiglao António Grilo Jose M. Barcelo-Ordinas Mohammad Alaei Petia Todorova Politecnico di Milano Milano Italy EEEI University of the Philippines Philippines INESC-ID/INOV/IST Lisboa Portugal Universitat Politècnica de Catalunya Barcelona Spain Fraunhofer FOKUS Berlin Germany

Wireless sensor networks (WSNs) have enjoyed dramatic developments over the last decade. The availability of CMOS cameras and microphones enlarged the scope of WSNs paving the way to the development of Wireless Multimedia sensor networks (WMSN). Among the envisaged WMSN applications, Real-time Multimedia Monitoring constitutes one of the most promising. However, the resource requirements of these applications place difficult challenges in terms of network lifetime and scalability. This paper starts by identifying the main characteristics and requirements of Real-time Multimedia Monitoring applications and then highlights key research directions that may help to overcome those challenges.

关键词： Multimedia communication Monitoring Streaming media Visualization Wireless sensor networks Feature extraction Delay

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Self-powered high-rate Wireless sensor Network for Underground High Voltage Power Lines

Self-powered high-rate Wireless Sensor Network for Undergrou...

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IEEE Instrumentation and Measurement Technology conference

作者： Daniel Mihai Toma Joaquin del Rio Antoni Mànuel-Làzaro Electronics Department Universitat Politècnica de Catalunya Barcelona Spain

The use of Wireless sensor networks (WSNs) are a promising technology that can enhance various aspects of today's electric power systems, including generation, delivery, and utilization, making them a vital component of the next-generation electric power system, the smart grid. However, harsh and complex electric-power-system environments pose great challenges in the reliability of WSN communications in smart-grid applications. This paper presents wireless sensors with magnetic harvesting capabilities deployed along Underground High Voltage Power Lines (UHVPL) to allow long-lasting operation. The paper includes an overview of the communication protocol that optimizes sensor node coordination in linear array arrangements. Based on an optimal time synchronization method, the wireless sensors can self-adjust the communication timing in order to minimize the total power consumption. In addition, the paper provides a description of a linear sensor network under test, the results and discussions concerning network reliability and power efficiency.

关键词： sensors Wireless sensor networks Protocols Wireless communication Reliability Synchronization Monitoring

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NEW e-health signaling model in the NGN environment

NEW e-health signaling model in the NGN environment

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International conference on e-health Networking, Applications and Services (HealthCom)

作者： Adel Mounir Said Ashraf William Ibrahim Switching Department National Telecommunication Institute-NTI Cairo Egypt

sensor networks are considered the heart of a wide range of applications. e-Health is one of those applications. This paper proposes a new network and Context Awareness service architecture for e-Health services. The proposal integrates the Ubiquitous sensor Network (USN) with the IP Multimedia Subsystem (IMS)-based next generation Network (NGN). It provides a detailed signaling model for different healthcare scenarios based on SIP. The proposal involves modifications made to SIP to match the new e-Health features provided.

关键词： next generation networking Medical services Servers IP networks Multimedia communication Logic gates Context-aware services

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Context-aware data discovery

Context-aware data discovery

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International conference on Intelligence in next generation networks (ICIN)

作者： Dmitry Namiot Manfred Sneps-Sneppe Faculty of Computational Math and Cybernetics Lomonosov Moscow State University Moscow Russia Ventspils International Radio Astronomy Centre Ventspils University College Ventspils Latvia

This paper discusses context-aware data browsing and data retrieval for mobile subscribers. We describe existing models as well as provide a new description for our SpotEx approach. Our model for context-aware data discovery uses mobile phones as proximity sensors. In our concept, any existing or even specially created wireless network node could be used as a presence sensor that can open (discover) access to some dynamic or user-generated content. The content itself could also be linked to social media. An appropriate mobile service (context-aware browser) can present that information to mobile subscribers. Potential use-cases for the proposed approach include any project associated with hyper-local news data. For example, projects providing Smart City data, delivering indoor retail information, etc.

关键词： Mobile communication Context IEEE 802.11 Standards Web pages sensors Browsers Mobile handsets

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Wireless sensor network in smart grid technology: Challenges and opportunities

Wireless sensor network in smart grid technology: Challenges...

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International conference on Sciences of Electronics, Technologies of Information and Telecommunications (SETIT)

作者： M. El Brak M. Essaaidi Information Systems and Telecommunications Laboratory Faculty of Science and Technology Abdelmalek Essaadi University Tangier Morocco

The collaborative and low-cost nature of wireless sensor networks (WSNs) brings significant advantages over traditional communication technologies used in today's electric power systems. Recently, WSNs have been widely recognized as a promising technology that can enhance various aspects of today's electric power systems, including generation, delivery, and utilization, making them a vital component of the next-generation electric power system, the smart grid. However, harsh and complex electric- power-system environments pose great challenges in the reliability of WSN communications in smart grid applications. This paper starts with an overview of the application of WSNs for electric power systems along with their opportunities and challenges and opens up future work in many unexploited research areas in diverse smart-grid applications.

关键词： Wireless sensor networks Smart grids Monitoring Wireless communication Zigbee Network topology

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