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检索条件"任意字段=6th IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2010"

共 258 条记录，以下是91-100 订阅

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A RFID Anti-collision Algorithm Based on distributed Power Control

A RFID Anti-collision Algorithm Based on Distributed Power C...

引用

6th international conference on Wireless Communications, Networking and Mobile computing (WICOM)

作者： Bai, Yu Xuan, Xiu-Wei Teng, Jian-Fu Zhang, Li-Yi Tianjin Univ Sch Elect Informat Engn Tianjin 300072 Peoples R China Tianjin Univ Technol Sch Comp & Telecommun Tianjin Peoples R China Tianjin Univ Commerce Sch Informat Engny Tianjin Peoples R China

ISBN: (纸本)9781424437092

In RFID systems, some readers will suffer from RF interference, which can lead to reader collision. Consequently, an anti-collision algorithm based on distributed power control (DPC) scheme was proposed as a solution for the problem in this paper. the proposed algorithm dynamically adjusts power output of a RFID reader based on the signal-to-interference ratio (SIR) of RFID reader receiver, minimizes the reader collision ratio while maintaining a desired read range. the simulation results shown that the proposed algorithm reduces the collision ratio greatly while ensure overall coverage area of the RFID system.

关键词： RFID DPC SIR Reader Collision

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Implementation and Optimization of Orthogonal Pairing Algorithm in WiMAX

Implementation and Optimization of Orthogonal Pairing Algori...

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6th international conference on Wireless Communications, Networking and Mobile computing (WICOM)

作者： Zhou Liang Cui Xiao-le Cheng Shao-gang Peking Univ Shenzhen Grad Sch Key Lab Integrated Syst Shenzhen Peoples R China ZTE Corp Wireless Inst Shenzhen Peoples R China

ISBN: (纸本)9781424437092

Pairing algorithm is the key to uplink (UL) virtual Multiple Input-Multiple Output (V-MIMO) systems. Orthogonal pairing algorithm is more effective than most of other existing pairing algorithms. However, in real-life systems, e. g. Worldwide Interoperability for Microwave Access (WiMAX), it's impossible to calculate orthogonality of two Mobile Stations (MSs) on their shared subcarriers directly, which is the most troublesome problem of orthogonal pairing algorithm. Based on WiMAX distributed subcarrier allocation mode, we propose a feasible way to resolve the above problem. Our proposed way utilizes the characteristic of pseudo-randomization of WiMAX distributed subcarrier allocation mode and avoids direct computation of orthogonality of two MSs on their shared subcarriers. the correctness of our proposal is verified by two simulation experiments.

关键词： UL V-MIMO orthogonal pairing algorithm distributed subcarrier allocation WiMAX

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the Application of the sensor Model Language in sensor Observation Service of the HeiHe Experimental Research 6

The Application of the Sensor Model Language in Sensor Obser...

引用

6th international conference on Cyber-Enabled distributed computing and Knowledge Discovery (CyberC)

作者： Song, Dongze Luo, Wanming Liu, Ting Yan, Baoping Chinese Acad Sci Comp Network Informat Ctr Beijing Peoples R China

ISBN: (纸本)9781479962365

the Heihe Watershed Allied Telemetry Experimental Research (HiWATER) is a significant research project that performs airborne, satellite-borne and ground-based remote sensing experiments at various scales by coordinating interdisciplinary researchers from different institutions and projects. therefore, in order to discover, access and process sensors within the heterogeneous systems, we use the sensor Model Language (sensorML) to model these sensors and sensor systems in the stations, and use sensor Observation Service (SOS) to display the sensor information and observation data information. In this paper, we firstly introduce the sensorML and SOS;then mainly present a model of sensor station and the application of this model in SOS.

关键词： HiWATER SWE sensor Web XML sensorML SOS

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A Reliable and Secure distributed In-Network Data Storage Scheme in Wireless sensor Networks

A Reliable and Secure Distributed In-Network Data Storage Sc...

引用

Int Joint conference of 10th ieee Int Conf on Trust, Security and Privacy in computing and Communications (TrustCom) / 8th ieee Int Conf on Embedded Software and systems (ICESS) / 6th Int Conf on Frontier of Computer Science and Technology (FCST)

作者： Abdullahi, Muhammad Bashir Wang, Guojun Musau, Felix Cent S Univ Sch Informat Sci & Engn Changsha 410083 Hunan Peoples R China

ISBN: (纸本)9780769546001

In a battlefield surveillance scenario, data readings and events emerging from a wireless sensor network deployed that may not be used immediately by or simply impossible to transmit to an authorized user (a Soldier) in real time are stored in the network. Without proper protection for the sensitive data generated in this setting, a compromised storage node (by an enemy soldier) may divulge its stored sensitive data about the monitored environment, and even worse, it may alter the data. In this paper, we integrate an elliptic curve cryptography scheme and an erasure coding scheme to provide reliable and secure distributed in-network data storage for sensor networks. the main idea is to distribute each erasure coded fragment appended with a fingerprint to different storage nodes. the fingerprint is to allow each coded data fragment to be independently verified as a valid and correct subset of a specific data item. So, the scheme achieves localization of data error. the proposed scheme is resilient to collusion attack, pollution attack, and data dropping attack, and guarantees forward and backward data secrecy as well. the security of the proposed scheme relies on the intractability of the elliptic curve discrete logarithm problem. Different from the existing solutions, the uniqueness of our method comes from the use of lightweight encryption scheme, which is well suited for resource constrained wireless sensors.

关键词： Wireless sensor network distributed in-network storage resiliency reliability security energy consumption

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Building a quasi regular network from randomly distributed wireless sensor network

Building a quasi regular network from randomly distributed w...

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2010 6th international conference on Wireless Communications, Networking and Mobile computing, WiCOM 2010

作者： Zhi, Liu Qiu, Zheng-Ding Institute of Information Science Beijing Jiaotong University Beijing China

ISBN: (纸本)9781424437092

A new algorithm named QRNA (Quasi Regular Node Activation) is proposed in this paper, which employ equilateral triangular structure to control topology distribution of active nodes. In QRNA, sufficient and necessary conditions for full coverage and connectivity are deduced based on a new metric, irregularity. In addition, a distributed back-off competition scheme is designed to schedule the activation of nodes to form a quasi regular network. Simulations will show that, compared to the reference algorithms, QRNA can efficiently reduce the number of active nodes, and prolong the coverage lifetime. © 2010 ieee.

关键词： Chemical activation

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Suppressing Redundancy in Wireless sensor Network Traffic 10

Suppressing Redundancy in Wireless Sensor Network Traffic

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6th ieee international conference on distributed computing in sensor systems

作者： Abe, Rey Honiden, Shinichi Univ Tokyo Tokyo Japan

ISBN: (纸本)9783642136504

Redundancy suppression is a network traffic compression technique that, by caching recurring transmission contents at receiving nodes, avoids repeatedly sending duplicate data. Existing implementations require abundant;memory both to analyze recent traffic for redundancy and to maintain the cache. Wireless sensor nodes at the same time cannot provide such resources due to hardware constraints. the diversity of protocols and traffic patterns in sensor networks furthermore makes the frequencies and proportions of redundancy in traffic unpredictable. the common practice of narrowing down search parameters based on characteristics of representative packet traces when dissecting data for redundancy thus becomes inappropriate. Such difficulties made us devise a novel protocol that conducts a probabilistic traffic analysis to identify and cache only the subset of redundant transfers that yields most traffic savings. We verified this approach to perform close enough to a solution built on exhaustive analysis and unconstrained caching to be practicable.

关键词： Redundancy

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dcoss '10 - international conference on distributed computing in sensor systems, Adjunct Workshop Proceedings: IWSN, Mobisensors, Poster and Demo Sessions: Preface

DCOSS '10 - International Conference on Distributed Computin...

引用

dcoss '10 - international conference on distributed computing in sensor systems, Adjunct Workshop Proceedings: IWSN, Mobisensors, Poster and Demo Sessions 2010年

作者： Nikoletseas, Sotiris

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distributed Fog computing Architecture for Real-Time Anomaly Detection in Smart Meter Data 6

Distributed Fog Computing Architecture for Real-Time Anomaly...

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6th ieee international conference on Big Data computing Service and Applications (ieee BigDataService)

作者： Jaiswal, Rituka Chakravorty, Antorweep Rong, Chunming Univ Stavanger Dept Elect Engn & Comp Sci Stavanger Norway

ISBN: (纸本)9781728170220

the use of Fog computing for real-time Big Data monitoring of power consumption is gaining popularity. In traditional systems, Cloud servers receive sensor Big Data, perform predictions and detect anomalies or any threat patterns and then raise the alarms. With exponentially increasing sensor data, Cloud servers are becoming impractical to process this data because of the issues of volume, velocity, variety, network bandwidth, real-time support and security issues. Fog computing is introduced as a distributed computing paradigm that uses intermediate computing infrastructure for processing to overcome the limitations of Cloud computing. In this paper, we propose a hierarchically distributed Fog computing architecture to deploy machine learning based anomaly detection models for generating insights from the collected Smart meter sensor data from the household. the anomaly detection is divided into two steps: model training and anomaly detection. We perform detailed analysis and evaluation of the models using standard open datasets obtained from UCI machine learning repository. the results confirm the efficacy of our proposed architecture. We used open source framework and software for our experiments.

关键词： Fog computing Real-time Anomaly detection Big Data Analytics Machine Learning Ensemble Learning Power Consumption Prediction distributed computing

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Mobile sensor Network Localization in Harsh Environments 10

Mobile Sensor Network Localization in Harsh Environments

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6th ieee international conference on distributed computing in sensor systems

作者： Chenji, Harsha Stoleru, Radu Texas A&M Univ College Stn TX 77843 USA

ISBN: (纸本)9783642136504

the node localization problem in mobile sensor networks has recently received significant attention. Particle filters, adapted from robotics, have produced good localization accuracies in conventional settings, but suffer significantly when used in challenging indoor and mobile environments characterized by a high degree of radio irregularity. We propose FuzLOC, a fuzzy logic-based approach for mobile node localization in challenging environments and formulate the localization problem as a fuzzy multilateration problem, with a fuzzy grid-prediction scheme for sparse networks. We demonstrate the performance and feasibility of our localization scheme through extensive simulations and a proof-of-concept implementation on hardware, respectively. Simulation results augmented by data gathered from our 42 node indoor testbed demonstrate improvements in the localization accuracy from 20%-40% when the radio irregularity is high.

关键词： Fuzzy logic

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Localizing stationary target in distributed network environment

Localizing stationary target in distributed network environm...

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international conference on Wireless Communications, Networking and Mobile computing (WiCom)

作者： Zemin, Wu Zhenglun, Qiu Shujie, Ren Department of Telecommunication Engineering Institute of Communication Engineering PLAUST Nanjing China Department of Electronics Institute of Science PLAUST Nanjing China

ISBN: (纸本)9781424437092

After discussing the drawbacks of localization algorithm for stationary or slow speed target in WSN, new algorithm based on precise propagation time delay measurement is introduced. Mechanisms for time sampling and TOA measuring procedure are described in detail, which make the measurement error equivalent to CPU instruction cycle. the effect of NLoS is considered in location calculation procedure, which leads to the adoption of variance weight method. through simulation, the localization precision can reaches 10m in LoS environment and 20m for NLoS. © 2010 ieee.

关键词： sensor networks

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