中国移动实现通信网时间同步从“城域自治”迈向“全国一体”_老虎社区_美港股上老虎

中国移动实现通信网时间同步从“城域自治”迈向“全国一体”

中国产业经济信...01-27

近日，中国移动与中国科学院国家授时中心合作，在实现中国移动同步网与国家高精度地基授时系统融合对接的基础上，于北京、广东、陕西等全国9个省区市，成功完成首次大规模、跨省域的北斗卫星共视同步系统现网商用试验。这一成果不仅标志着通信网络高精度时间同步能力从“城域自治”迈向“全国一体”，更为构建国际领先的国家级时空体系奠定了坚实基础。本次试验首次将中国移动牵头制定的通信行业北斗卫星共视同步系统行业标准（...

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4769-2024）应用于大规模跨省现网实践。中国移动采用分布式卫星共视（DCV）技术，利用地理上分散的站点同观一颗或多颗北斗卫星，精准计算站间时间差，实现广域范围内纳秒级高精度时间同步。基于该技术，本次商用试验成功将原本相对独立的城域时间同步网络有机融合，构建起覆盖全国、多区域协同运行的北斗共视同步网络。本次试验还实现了国家级授时基础设施与通信网络的深度融合。试验以北京、西安、广州为中心设立共视基准站，引入中国科学院国家授时中心“高精度地基授时系统”提供的标准时间信号作为统一参考，并通过中国移动通信网络承载与北斗卫星共视校准，将高精度标准时间注入城域时间同步网。该“高精度地基授时系统”是国家重大科技基础设施项目，能够向通信网络提供溯源于我国标准时间UTC（NTSC）的高精度时间与频率信号，可与北斗等星基授时系统相互补充、互为备份。本次试验首次在通信领域实现该系统与大规模商用网络的深度融合接入，在高精度授时与通信网络融合应用方面达到国际领先水平。试验结果显示，采用该技术方案后，不同区域时间服务器之间的相对时间差稳定控制在9纳秒以内，相较传统方案提升一个数量级以上。同时，该方案有效增强了对北斗授时性能的集中化、可视化监测能力，为同步网的运行维护和质量评估提供了有力支撑。（记者 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