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Proceedings - the 28th international conference on distributed computing systems, ICDCS 2008

Proceedings - The 28th International Conference on Distribut...

引用

28th international conference on distributed computing systems, ICDCS 2008

ISBN: (纸本)9780769531724

the proceedings contain 102 papers. the topics discussed include: computer science as a lens on the sciences;real-time detection of clone attacks in wireless sensor networks;comparing symmetric-key and public-key based security schemes in sensor networks: a case study of user access control;securing wireless data networks against eavesdropping using smart antennas;on security vulnerabilities of null data frames in ieee 802.11 based WLANs;identifying frequent items in P2P systems;on the impact of mobile hosts in peer-to-peer data networks;is random scheduling sufficient in P2P video streaming?;circumventing server bottlenecks;indirect large-scale P2P data collection;detecting click fraud in pay-per-click streams of online advertising networks;exploring anti-spam models in large scale VoIP systems;distributed divide-and-conquer techniques for effective DDoS attack defenses;and mobility-assisted spatiotemporal detection in wireless sensor networks.

关键词： Network security

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Multi-parameter ocean monitoring system using underwater wireless sensor networks

Multi-parameter ocean monitoring system using underwater wir...

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4th IASTED international conference on Advances in Computer Science and Technology, ACST 2008

作者： Anupama, K.R. Sasidharan, Aparna Vadlamani, Supriya Department of Electronics and Instrumentation Birla Institute of Technology and Science Pilani India Department of Computer Science and Information Systems Birla Institute of Technology and Science Pilani India

ISBN: (纸本)9780889867307

the deployment of sensor networks in an aquatic environment has been severely limited because of the unpredictable nature of the underwater environment. Building a low-cost, energy and resource efficient Underwater Wireless sensor Network (UWSN) will open new vistas in the areas of ocean, river and lake monitoring and exploration. In this paper we present a novel architecture for a hypothetical UWSN that could be deployed in the Bay-of-Bengal. this UWSN is an N-tier model with sensor nodes deployed at varying depths along the ocean column. the network can be re-configured based on the deployment scenario and the application. this paper also discusses various issues involved in developing a cross-layer protocol for the architecture proposed.

关键词： Network architecture

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Response Time Constrained Top-k Query Evaluation in sensor Networks

Response Time Constrained Top-<i>k</i> Query Evaluation in S...

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14th international conference on Parallel and distributed systems

作者： Liang, Weifa Chen, Baichen Xu, Jeffrey Y. Australian Natl Univ Dept Comp Sci GPO Box 4 Canberra ACT 0200 Australia Chinese Univ Hong Kong Dept Syst Eng & Eng Shatin Peoples R China

ISBN: (纸本)9780769534343

Existing solutions for top-k queries in wireless sensor networks mainly focused on energy efficiency and little attention has been paid to the response time to answer a top-k query as well as the relationship between the response time and the network lifetime. In this paper we address this issue explicitly by studying the top-k query problem in sensor networks with the response time constraint. We aim at finding an energy-efficient routing tree and devising an evaluation algorithm for top-k queries on the tree such that the network lifetime is significantly prolonged, provided that the query response time constraint is met too. To do so, we propose a novel joint optimization framework of finding a routing tree and devising a filter-based evaluation algorithm on the tree. We also conduct extensive experiments by simulation to evaluate the performance of the proposed algorithms. the experimental results showed that the joint optimization framework prolongs the network lifetime significantly under a given response time constraint.

关键词： Wireless sensor networks

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A distributed multi-antenna based NLOS error elimination algorithm for mobile localization

A distributed multi-antenna based NLOS error elimination alg...

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2008 4th ieee international conference on Circuits and systems for Communications, ICCSC

作者： Shi, Mingyang Tao, Xiaofeng Xu, Yongtai Han, Xiao Key Lab. of Universal Wireless Communications Beijing University of Posts and Telecommunications Ministry of Education Beijing China National Meteorological Center China Meteorological Administration Beijing China

ISBN: (纸本)9781424417087

An important problem in wireless location systems especially in urban environment is the non-line-of-sight (NOLS) error. In this paper, we propose a novel NLOS error elimination algorithm based on distributed multi-antenna in time-of-arrival (TOA) location estimation. One important conclusion can be drawn by analyzing different scattering models: NLOS errors contained in TOA estimates which are measured by different antennas in one multi-antenna array have great correlation. We process these TOA measurements to estimate the position of scatterers which cause the NLOS propagation and to calculate NLOS errors contained in TOA measurements. Simulation results show that this algorithm can eliminate NLOS error effectively and improve the accuracy of TOA location algorithms in NLOS environments significantly. ©2008 ieee.

关键词： Location

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Compromised sensor nodes detection: A quantitative approach

Compromised sensor nodes detection: A quantitative approach

引用

28th international conference on distributed computing systems Workshops, ICDCS Workshops 2008

作者： Li, Tao Song, Min Alam, Mansoor EECS Department University of Toledo Toledo OH 43606 United States ECE Department Old Dominion University Norfolk VA 23529 United States

ISBN: (纸本)9780769531731

In a wireless sensor network, an adversary may crack legal nodes or deploy malicious nodes to launch various attacks. these nodes are collectively called compromised nodes. In this paper, we define a Data Transmission Quality (DTQ) function to differentiate the legitimate nodes and compromised nodes. the DTQ function is defined in a way that it will keep close to constant or change smoothly for legitimate nodes and will keep decreasing for suspicious nodes. the final decision of whether or not a suspicious node is compromised is determined by a group voting procedure. Simulations were conducted to verify the effectiveness of the design. © 2008 ieee.

关键词： sensor nodes

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A Novel Dynamic Tuning of the Contention Window (CW) for ieee 802.11e Enhanced distributed Control Function

A Novel Dynamic Tuning of the Contention Window (CW) for IEE...

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4th international conference on Networked computing and Advanced Information Management

作者： Lv, Jun Zhang, Xinming Han, Xiaojun Univ Sci & Technol China Dept Comp Sci & Technol Hefei 230027 Peoples R China

ISBN: (纸本)9780769533223

Enhanced distributed Control Function (EDCF) can guarantee inter-AC (Access Category) differentiation for wireless ad hoc networks. However, it ignores the intra-AC differentiation. this paper proposes a new function to adjust the contention window in 802.11e to guarantee both inter-AC differentiation and intra-AC one. Our goal is to alleviate the delay, collisions and increase the throughput by decreasing collisions whet? the loads of the network are heavy. the mail? contribution of our algorithm, which takes flow priority and nodes density into consideration and can be adaptively adjusted according to recent network conditions, is to smooth the collision by tuning the contention window. We also present a theoretical throughput analysis on our new function. the experiment results indicate that our scheme outperforms ieee802.11e EDCF in terms of packet delay, throughput and collisions.

关键词： ad hoc networks collision contention window ieee802.11e delay throughput

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Restricted Linear Flooding Scheme to Obtain Sink Location in Wireless sensor Networks

Restricted Linear Flooding Scheme to Obtain Sink Location in...

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4th international conference on Wireless Communications, Networking and Mobile computing

作者： Park, Hosung Kim, Taehee Jin, Min-Sook Sambuu, Batzorig Kim, Sang-Ha Chungnam Natl Univ Dept Comp Engn Taejon 305764 South Korea

ISBN: (纸本)9781424421077

Geographic routing has been considered as an energy efficient and simple routing protocol for wireless sensor networks. It utilizes only geographical location information without global network structures to route data packets. To take these advantages of geographic routing, a source node should be aware of the location of a sink node. Methods that the source node efficiently obtains the sink location information, however, have been scantily studied yet. In this paper, we propose a Restricted Linear Flooding Scheme to Obtain Sink Location in Wireless sensor Networks. the source node sends location query message and the sink node sends location announcement message to specified direction respectively, the node located on a crossing point of these two message forwarding paths informs the source node about the sink location information. then the source node sends data to the sink node by geographic routing. the proposed scheme also constructs a virtual restricted linear flooding zone Inside the network to guarantee the existence of the crossing point. Simulation results show that proposed scheme is more efficient In terms of energy consumption than existing protocols.

关键词： wireless sensor network geographic routing sink location acquirement

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A middleware services simulation platform for wireless sensor networks

A middleware services simulation platform for wireless senso...

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28th international conference on distributed computing systems Workshops, ICDCS Workshops 2008

作者： Hock, Beng Lim Wang, Bang Fu, Cheng Phull, Arpan Ma, Di Intelligent Systems Centre Nanyang Technological University

ISBN: (纸本)9780769531731

In the recent years, wireless sensor networks have attracted a lot of attention due to their broad application areas. In many application scenarios, hundreds or thousands of sensor nodes may be deployed in the physical environment. To design, implement, manage and maintain such large-scale networks efficiently is a major challenge which requires an integrated middleware development approach. In this paper, we focus on the development of a simulation platform *** designed to support the development of sensor network middleware services. this novel platform is designed in a modular manner to facilitate the rapid integration and testing of different middleware algorithms and services. We present the simulator's software architecture and its operation. A case study to illustrate the usage of our simulation platform is also presented. the simulation platform shows potentials to support the research and development of middleware services for wireless sensor networks. © 2008 ieee.

关键词： Middleware

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Energy-Efficient Area Coverage in Heterogeneous Energy Wireless sensor Networks

Energy-Efficient Area Coverage in Heterogeneous Energy Wirel...

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4th international conference on Wireless Communications, Networking and Mobile computing

作者： Mao, Yingchi Li, Xiaofang Chen, Lijun Hohai Univ Coll Comp & Informat Engn Nanjing 210099 Peoples R China Nanjing Univ Dept Comp Sci Nanjing 210093 Peoples R China

ISBN: (纸本)9781424421077

Sensing coverage and energy consumption are two primary issues in wireless sensor networks. the performance of a sensor network depends to a large extent on the sensing coverage, and its lifetime is determined by its energy consumption. In real-world applications, it Is unrealistic to guarantee all sensors have the same energy because they have different energy consumption. Moreover, sensors redeployment also results in the heterogeneous energy capacities. In this paper, an energy-efficient Area Coverage protocol for Heterogeneous Energy sensor networks (ACHE) is proposed. ACHE can achieve a good performance in terms of sensing area coverage, lifetime by minimizing energy consumption for control overhead, and balancing the energy load among all nodes. Adopting the hierarchical clustering Idea, ACHE elects the active nodes based on the average residual energy of neighboring nodes and its own residual energy parameters. Our simulation study and analysis demonstrate that ACHE not only provide the high quality of sensing coverage, but also has the good performance in the energy efficiency. In addition, ACHE can better adapt the applications with the great heterogeneous energy capacities in the sensor networks.

关键词： Wireless sensor Networks Area Coverage heterogeneous energy energy-efficiency location-independent

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Improving the Robustness of distributed Range-based Localisation Algorithms

Improving the Robustness of Distributed Range-based Localisa...

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4th international conference on sensor Technologies and Applications (sensorCOMM)

作者： Francisco, Silas Ribeiro, Carlos IST Lisbon Portugal IST INESC ID Lisbon Portugal

ISBN: (纸本)9780769533308

Localisation algorithms are of key importance to Wireless sensor Networks, because they provide the information required to join the data sensed by each sensor. Protocol, application security and data integrity is paramount for these networks that monitor critical infrastructures. However, current range-based distributed localisation algorithms are very sensible to faulty behaviour. A single faulty node may prevent every other node to know its position and everyone else position. In this work we show how to modify range-based distributed localisation algorithms in order to improve its resilience to faulty behaviour. We also conclude that the resilience cannot be improved further, with current algorithms, without changing the density of the network.

关键词： WSN distributed Localisation Security

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