The Experts below are selected from a list of 98094 Experts worldwide ranked by ideXlab platform
Damla Turgut - One of the best experts on this subject based on the ideXlab platform.
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Secure Time Synchronization protocols for wireless sensor networks
IEEE Wireless Communications, 2007Co-Authors: Azzedine Boukerche, Damla TurgutAbstract:Time Synchronization is essential in wireless sensor networks as it is needed by many applications for basic communication. The inherent characteristics of sensor networks do not permit simply applying traditional Time Synchronization algorithms. Therefore, many new Time Synchronization algorithms have been proposed, and a few of them provide security measures against various degrees of attacks. In this article we review the most commonly used Time Synchronization algorithms and evaluate these algorithms based on factors such as their countermeasures against various attacks and the types of techniques used.
Mani Srivastava - One of the best experts on this subject based on the ideXlab platform.
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Temperature Compensated Time Synchronization
IEEE Embedded Systems Letters, 2009Co-Authors: Thomas Schmid, Zainul Charbiwala, Roy Shea, Mani SrivastavaAbstract:Time Synchronization in embedded sensor networks is an important service for correlating data between nodes and communication scheduling. While many different approaches to the problem are possible, one major effect of clock frequency difference between nodes, environmental temperature changes, has often been left out of the solution. The common assumption that the temperature is static over a certain period of Time is often used as an excuse to assume constant frequency errors in a clock. This assumption forces Synchronization protocols to resynchronize too often. While there exists hardware solutions to this problem, their prohibitive high cost and power consumption make them unsuitable for some applications, such as wireless sensor networks. Temperature compensated Time Synchronization (TCTS) exploits the on-board temperature sensor existing in many sensor network platforms. It uses this temperature sensor to autonomously calibrate the local oscillator and removes effects of environmental temperature changes. This allows a Time Synchronization protocol to increase its reSynchronization period, without loosing Synchronization accuracy, and thus saves energy and communication overhead. In addition, TCTS provides a stable clock source when radio communication is impaired. We present the theory behind TCTS, and provide initial results of a simulated comparison of TCTS and the flooding Time Synchronization protocol.
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Secure Time Synchronization in Sensor Networks
ACM Transactions on Information and System Security, 2008Co-Authors: Saurabh Ganeriwal, Christina Pöpper, Srdjan Capkun, Mani SrivastavaAbstract:Time Synchronization is critical in sensor networks at many layers of their design. It enables better duty-cycling of the radio, accurate and secure localization, beamforming, and other collaborative signal processing tasks. These benefits make Time-Synchronization protocols a prime target of malicious adversaries who want to disrupt the normal operation of a sensor network. In this article, we analyze attacks on existing Time Synchronization protocols for wireless sensor networks and we propose a secure Time Synchronization toolbox to counter these attacks. This toolbox includes protocols for secure pairwise and group Synchronization of nodes that either lie in the neighborhood of each other or are separated by multiple hops. We provide an in-depth analysis of the security and the energy overhead of the proposed protocols. The efficiency of these protocols has been tested through an experimental study on Mica2 motes.
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secure Time Synchronization service for sensor networks
Workshop on Wireless Security, 2005Co-Authors: Saurabh Ganeriwal, Srdjan Capkun, Chihchieh Han, Mani SrivastavaAbstract:In this paper, we analyze attacks on existing Time Synchronization protocols for wireless sensor networks. We propose a secure Time Synchronization toolbox to counter these attacks. This toolbox includes protocols for secure pairwise and group Synchronization of nodes that lie in each other's power ranges and of nodes that are separated by multiple hops. We provide an in-depth analysis of security and energy overhead of the proposed protocols.
Azzedine Boukerche - One of the best experts on this subject based on the ideXlab platform.
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Secure Time Synchronization protocols for wireless sensor networks
IEEE Wireless Communications, 2007Co-Authors: Azzedine Boukerche, Damla TurgutAbstract:Time Synchronization is essential in wireless sensor networks as it is needed by many applications for basic communication. The inherent characteristics of sensor networks do not permit simply applying traditional Time Synchronization algorithms. Therefore, many new Time Synchronization algorithms have been proposed, and a few of them provide security measures against various degrees of attacks. In this article we review the most commonly used Time Synchronization algorithms and evaluate these algorithms based on factors such as their countermeasures against various attacks and the types of techniques used.
Cao Ming-zen - One of the best experts on this subject based on the ideXlab platform.
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Research on Time Synchronization of Wireless Sensor Networks
Computer Simulation, 2007Co-Authors: Cao Ming-zenAbstract:Sensor network made by the integration of sensor, micro-electro-mechanism system and network technologies, is a novel technology for acquiring and processing information and has a wide development future. Time Synchronization has been an extremely difficult issue for wireless sensor networks due to its decentralized nature. The information exchange of the existing Time Synchronization protocol leads to excessive consumption of energy and the need of high-level protocol. So a new Time Synchronization algorithm is proposed based on PCO, which effectively removes high-level interference by the interaction of physical layer, achieves Time Synchronization, and finds the relationship between wireless sensor networks energy consumption and the Synchronization Time. The simulation results show that the Time Synchronization protocol is feasible. It’s important for the development of WSN.
Hui-cai Tao - One of the best experts on this subject based on the ideXlab platform.
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Analysis of Time Synchronization System
DEStech Transactions on Computer Science and Engineering, 2018Co-Authors: Bing Chen, Hui-cai TaoAbstract:Modern technology has more and more demands on the Synchronization of Time and the precision of Time service with the development of society and science and technology. The satellite Time Synchronization local Time has become one of the main methods of Time service at home and abroad. Beidou satellite navigation system is China's self-developed global satellite navigation system, became the third sophisticated satellite navigation system after the United States global positioning system and the Russian GLONASS satellite navigation system. This paper mainly studies the satellite timing system of the Time Synchronization system, which uses dual signal source of Beidou and GPS. It is not dependent on any single satellite Synchronization system. Therefore, the stability of the Time Synchronization system is very high.
