I. Project Name

China Mobile Power Communication Network Full-Network Clock Synchronization Upgrade Project

II. Duration of Cooperation

2025 year 10 month - 2026 year 1 month

III. Company Profile of China Mobile

China Mobile Communications Group Co., Ltd. is a leading domestic telecommunications operator that undertakes critical infrastructure construction and operations in the power‑communication sector, providing highly reliable communication support for core services such as grid dispatching, power‑data transmission, and renewable‑energy grid integration. As a nationwide integrated information‑service provider, China Mobile remains committed to fostering deep integration between its communication networks and the power industry. Its power‑communication network spans multiple layers—including backbone and access networks—serving national‑scale power‑generation dispatch, equipment monitoring, and end‑user connectivity, with stringent requirements for the precision, stability, and security of time synchronization.

IV. Purchased Products

Beijing Zhongxinchuang Technology Co., Ltd. DNTS-9 Series NTP Server (including a version adapted for domestically developed IT infrastructure), along with a satellite timing antenna, redundant power modules, and centralized management software. This product leverages core all-digital phase-locked loop technology and supports the BeiDou system. / GPS Dual-mode time synchronization, with compatibility for domestically developed processor platforms, has been rigorously tested and certified by the National Time Service Center of the Chinese Academy of Sciences.

V. Customer Requirements

1. Time synchronization must be unified across thousands of network devices, servers, and terminals within the power communication network, with timing accuracy requirements within the local area network being… ≤1 Milliseconds, meet DL/T 860 Communication standards requirements for the power industry;
2. It features high reliability and redundant backup capabilities, supports a dual‑node hot‑standby architecture, and can withstand satellite signal interference, ensuring continuous time synchronization even in extreme environments.
3. It complies with the domestic‑made information technology innovation strategy, achieving full‑stack autonomy and controllability from the chip level to the operating system, thereby meeting the security requirements of critical information infrastructure.
4. Support NTP 、 PTP ( IEEE 1588 ) Supports multiple protocol outputs, meeting the time synchronization requirements of various types of devices in power communication networks;
5. Provides centralized management capabilities, supporting remote monitoring, parameter configuration, and fault alerts, thereby reducing operational complexity.

VI. Solution

Beijing Zhongxin Chuang Based On DNTS-9 Series NTP The server’s core technological advantages have enabled the development of a comprehensive clock synchronization solution tailored for China Mobile:

1. Deployment architecture: adopts “ Primary-standby for core nodes + Regional node distribution ” Deployment mode, core data center configuration 2 Taiwan DNTS-9 The servers are configured as a dual-node hot-standby cluster, with each regional communication site deployed independently. DNTS-9 Equipment that enables hierarchical time synchronization across the entire network;
2. Time‑keeping support: via the BeiDou system / GPS The dual-mode timing module acquires standard time signals and, by integrating single-satellite timing technology with a leap-second smoothing algorithm, ensures timing stability even in complex electromagnetic environments, thereby mitigating the risk of abrupt time jumps.
3. Safety compatibility: Selected DNTS-9HG The domestically developed version is equipped with a domestic processor and operating system, and employs a structured, modular design to ensure independent control over critical components, thereby meeting the requirements for domestic substitution.
4. Protocol Compatibility: Full Support NTP v1/v2/v3/v4 、 PTP IEEE 1588-2008 and IRIG-B Protocol support, providing multi‑port physical isolation output (up to supports 9 One extended network port, supporting the access requirements of equipment from different vendors in power communication networks;
5. Management Platform: Paired with a self-developed centralized management system, supporting SNMP Protocol-based access enables real-time monitoring of all server operating statuses, timing accuracy, and satellite signal quality, while providing remote fault diagnosis and software upgrade services.

VII. Implementation Outcomes

1. Time synchronization accuracy: The time synchronization error across the entire network is controlled within 0.3 Within milliseconds, the timing accuracy of core business nodes reaches 2.8 nanosecond / 24 Hours, meeting the stringent time‑accuracy requirements of critical power‑communication services;
2. System Stability: A dual‑machine hot‑standby architecture and a dual‑mode time‑synchronization design ensure uninterrupted operation, with an average mean time between failures (MTBF) of… MTBF ) Super 10 Ten thousand hours, successfully withstanding satellite signal interference under multiple extreme weather conditions;
3. Security and Compliance: The full-stack domestic adaptation has passed relevant joint certifications, meeting the security protection requirements for critical information infrastructure in the power industry and ensuring autonomous and controllable time synchronization systems.
4. Operational efficiency: The centralized management platform reduces 80% The workload of manual inspections has been reduced, and the fault response time has been shortened to 15 Within minutes, support 40 Ten thousand times / seconds' NTP Request processing capacity, meeting the demands of high-concurrency scenarios;
5. Scalability: The modular design supports future network expansion and functional upgrades, enabling flexible adaptation. 5G Time synchronization requirements for new service scenarios, such as base station access and capacity expansion of new energy power stations.

VIII. Application Cases

State Grid Corporation of China, China Southern Power Grid, China Huaneng Group, China Electric Power Research Institute, China General Nuclear Power Group, State Grid Data Center, China Dongfang Electric Corporation, China Power Finance Corporation, China Guodian Longyuan Power Group, CSSC Heavy Industry HaiZhuang Wind Power Equipment, China Huadian Corporation, Hebei Iron and Steel Group, China Mobile, Qira Photovoltaic Power Station in Xinjiang, Changping State Grid, Beijing Yizhuang State Grid, NARI Technology, State Grid Yingda Group, Huaneng International Power Co., Ltd., Huaneng Xihua Power Plant, Huaneng Jining Combined Heat and Power Plant, Xuji Electric, NARI Electric, Sifang Relay Protection Power Automation, Chongqing Kekai Qianwei Wind Power, HaiZhuang Wind Power, Shenhua Inner Mongolia Guohua Hulunbuir Power Station, Guangdong Shanwei Power Plant, China Unicom, Beijing Unicom, Shanghai Unicom, Guangzhou Unicom, Ningxia Unicom, Hubei Mobile, Xi’an Unicom, Xinjiang Unicom, Jiangsu Telecom, Hainan Unicom, Gansu Unicom, Jiangsu Telecom, Baoding Unicom, China Putian, Datang Mobile Communication Equipment, China Communications Services Corporation, Chongqing Liangjiang Satellite Mobile Communications, Hami Electric Power Co., Ltd., Gansu Zhongjie Energy Wind Power, Baicheng Power Plant, Urumqi Electric Power, Nanjing Electric, Jingneng Thermal Power, Hulunbuir Power Plant, Xiamen Huaxia International Power Development, Shanwei Power Plant, State Grid Chengnan Power Supply Company, Ma’anshan Dangtu Power Plant, Zhoukou Telecom, and others.