中国移动实现通信网时间同步从“城域自治”迈向“全国一体”

Core Viewpoint - China Mobile has successfully completed the first large-scale, cross-provincial commercial trial of the BeiDou satellite co-view synchronization system, marking a significant advancement in high-precision time synchronization capabilities from "metropolitan autonomy" to "national integration" [1][2]. Group 1: Technical Achievements - The trial utilized the distributed satellite co-view (DCV) technology to achieve nanosecond-level high-precision time synchronization across a nationwide network, overcoming the previous issue of "time islands" in metropolitan areas [1]. - The implementation of the industry standard for the BeiDou satellite co-view synchronization system (YD/T 4769-2024) in this large-scale trial represents a significant milestone in the integration of communication networks and high-precision time synchronization [1][2]. - The relative time difference between different regional time servers was stabilized within 9 nanoseconds, which is an improvement of more than an order of magnitude compared to traditional methods [2]. Group 2: Infrastructure and Future Outlook - The trial achieved a deep integration of national-level timing infrastructure with communication networks, utilizing the high-precision ground timing system from the National Time Service Center as a unified reference for standard time signals [2]. - China Mobile plans to continue enhancing collaboration with various sectors to accelerate the construction of a nationwide integrated time-space synchronization network, which will support emerging services such as 6G communication, computing networks, and artificial intelligence [2].