| 摘要: |
| 为了满足通信网对时间同步的要求以及寻找GPS的备用方案，提出了基于地面承载网
的IEEE1588时间同步技术。在介绍IEEE1588时间同步技术的基础上，全面归纳、分析了影响
IEEE1588时间同步精度的因素。在实验室环境下设计了基于WDM+MSTP的组网方案，并实现了
IEEE1588
时间同步信号的传送，相位偏差小于1 μs，验证了本方案的可行性。最后提出一种时
间
同步网模型，为未来建设基于承载网的IEEE1588时间同步网提供了参考模板和依据。 |
| 关键词: 通信网 IEEE1588 时间同步 WDM MSTP 承载网 |
| DOI： |
|
| 基金项目: |
|
| IEEE1588 Time Synchronization Accuracy Analysis and Validation Based on Carrier Network |
| YANG Shu-mei,WANG Kai |
| (China Telecom Corporation Limited Beijing Research Institute,Beijing 100035,C
hina;Institute of Optical Communication and Optoelectronics,Beijing Universi
ty of Posts and Telecommunications,Beijing 100876,China) |
| Abstract: |
| In order to satisfy the time synchronization in communication network, an
d also to find a backup sulution for GPS, IEEE1588 time synchronization based on
carrier network is proposed. On the basis of introducing IEEE1588 t
ime synchronization technology, the factors influencing IEEE1588 time synchroniz
ation accuracy is summarized and analysed.Then transmission of IEEE15
88 time synchronous signal is realized based on WDM+MSTP network in the laborato
ry,and the
accuracy is less than 1μs,which proves the feasibility of this solution.
Finally,a new reference template for the time synchronous network is proposed,an
d
suggestions for future construction of the IEEE1588 time synchronous netwo
rk based on carrier network are given. |
| Key words: communication network IEEE1588 time synchronization WDM MSTP carrier network |
《电讯技术》编辑部 