| 利用SDH实现高精度时间同步 |
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| 引用本文： | 胡迪,薛强,刘楠楠,尹楠,谷金雷. 利用SDH实现高精度时间同步[J]. 现代电信科技, 2012, 0(9): 58-62 |
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| 作者姓名： | 胡迪 薛强 刘楠楠 尹楠 谷金雷 |
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| 作者单位： | 工业和信息化部电信研究院泰尔实验室 |
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| 摘 要： | 首先分析了同步数字体系(SDH)网络的时频特性,然后提出了一种利用SDH实现高精度时间同步的方法。经实验验证,经过300 km,5个SDH网元传递后时间同步偏差平均值1.4 ns,最大值不超过11 ns。文章分析了技术实现的关键问题,并给出解决方案,然后通过测试及分析,验证了此方案的可行性和性能。
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| 关 键 词： | 时间同步 时间传输 同步数字体系 时延 |
Realization of High Precision Time Synchronization with SDH Network |
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| Affiliation: | Hu Di Xue Qiang Liu Nannan et.al |
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| Abstract: | In this paper, time frequency characteristics of Synchronous Digital Hierarchy （SDH） net- work were analyzed firstly. Then, a new method to achieve time synchronization based on SDH net-work was proposed. As shown in the verification test, the average value of time accuracy is 1.4 ns and the maximum is no more than 11 ns after the time signal transfers via 5 SDH Network Elements with the distance of 300 Kin. The key technology problem of the method was discussed and the solution was provided in the paper. The feasibility and performance of the proposed method was verified finally. |
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| Keywords: | time synchronization time transfer SDH time delay |
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