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首页> 外文期刊>IEEE transactions on industrial informatics >Enhanced Timestamping Method for Subnanosecond Time Synchronization in IEEE 802.11 Over WLAN Standard Conditions
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Enhanced Timestamping Method for Subnanosecond Time Synchronization in IEEE 802.11 Over WLAN Standard Conditions

机译：在WLAN标准条件下，增强了IEEE 802.11中的亚偶秒时同步的时间戳方法

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摘要

The time-sensitive network paradigm envisions the integration of operation technology and information technology in the same network. One of the requirements for building time-sensitive networks is sharing a global time along the network. This requirement is especially critical in wireless systems, where there are few robust methods to perform accurate time transfer. In this article, the problem of time transfer over realistic wireless channels is studied, and a time distribution scheme is proposed. The time distribution scheme has three components: Precision time protocol, a novel timestamping method (enhanced timestamps) and an algorithm to implement the enhanced timestamps. The performance of the proposed scheme has been evaluated in MATLAB using the IEEE 802.11n Standard under several standard wireless local area network channel models. The results show that the system can reach subnanosecond time transfer accuracy under non-line-of-sight and time-variant conditions, but its performance greatly depends on the signal-to-noise ratio and on the channel variation rate.
机译：时间敏感的网络范例设想在同一网络中的操作技术和信息技术的集成。构建时敏网络的要求之一是沿网络共享全局时间。此要求在无线系统中尤为重要，其中有很少的鲁棒方法来执行准确的时间传输。在本文中，研究了现实无线信道的时间传递问题，提出了一种时间分布方案。时间分配方案有三个组件：精度时间协议，一种新的时间戳方法（增强时间戳）和实现增强时间戳的算法。在Matlab下，在多个标准无线局域网网络信道模型下，在MATLAB中评估了所提出的方案的性能。结果表明，该系统可以在非视线和时间变体条件下达到亚倍十四的时间转移精度，但其性能大大取决于信噪比和信道变化率。

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