一种灵活、高精度的多跳传感器网络时间同步

Kee-Young Shin, Kwangyong Lee, Haeyong Kim, P. Mah, Seungmin Park, Chaedeok Lim, Heung-Nam Kim
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引用次数: 3

摘要

近年来,无线传感器网络(WSN)中的时间同步对于事件的准确时间戳和对占空比的微调协调以最小化功耗具有重要意义。提出了一种灵活、多跳、高精度的按需分层网格时间同步方法。OHMTS采用分层多跳网格网络结构,支持无线传感器网络的节能问题。为了进行性能评估,我们首先研究了OHMTS的误差来源,然后利用网络模拟器(NS-2)评估了OHMTS在同步延迟误差方面的性能。仿真结果表明,OHMTS提供了微调的时钟偏移机制,可以很容易地应用于实际的无线传感器网络平台
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A flexible, high-precise time synchronization for multi-hop sensor networks
In recent years, time synchronization in wireless sensor networks (WSN) is important for accurate time stamping of events and fine-tuned coordination of duty cycles to minimize power consumption. This paper presents an on-demand hierarchical mesh-based time synchronization (OHMTS) that is flexible, multi-hop based and high-precise in WSN. OHMTS adopts hierarchical and multi-hop mesh-based network architecture with supporting energy-saving problem for WSN. For the purpose of performance evaluation, we first study the error sources of OHMTS and then we evaluate the performance of OHMTS with respect to synchronization delay error using network simulator (NS-2). The simulation results show that OHMTS provides fine-tuned clock offset mechanism and can be easily applied to real WSN platform
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