Project Information
Resource Center for Authoritative Technology Programs
Aggregate a wealth of technical resources, covering the latest industry solutions and practical experience, to help enterprise innovation and development and project implementation. Provide detailed program documents, technical guidance and case studies to support your technical decision-making and implementation.
Every queue on the switch, every interrupt in the kernel, every slight jitter in the link between cabinets slowly stretched the time of the system. Within two to three years, AI cluster density, training/inference switching, cross-domain scheduling, and audit re-checking became the new normal, and we gradually realized that we needed to upgrade the "time base" from NTP, which is "as good as it can be used" to PTP, which is "in place and controllable". We gradually realized that we need to upgrade the "time base" from NTP, which can be used, to PTP, which is "in place and controllable", tighten the error budget from milliseconds to microseconds or even nanoseconds, and turn the "probabilistic consistency" into "engineering verifiability".
This solution proposes a unified time and frequency solution for intelligent transportation, taking T830 clock server as the core and constructing a three-layer architecture of "core-transmission-access". It realizes sub-microsecond to millisecond level grading precision timing through multi-reference source intelligent source selection algorithm and PTP/NTP dual engine. The solution supports multiple scenarios such as urban traffic management, intelligent high-speed, rail transportation, vehicle-road coordination, etc., and is compatible with the stock network, building a reliable, engineered and unified time reference for the intelligent transportation system.
In recent years, China's hospitals have been talking about "smart hospitals", "Internet hospitals" and "regional medical collaboration". From the national level of the "Healthy China 2030" plan outline, to the National Health Commission on electronic medical records, intelligent services, intelligent management of the grading review, the threshold of hospital information technology is higher than every year.
Behind these new requirements, there is a "base" that is often overlooked but relied upon by almost all systems: uniform, accurate and traceable time.
In a financial production network, time is not "as close as possible", but "must be consistent and traceable". When relying only on NTP, queuing jitter and path asymmetry across three layers and congestion can magnify deviations and tail risks to the millisecond-microsecond scale; PTP transforms source-to-end errors from uncontrollable fluctuations to budgetable, attributable, and manageable ones through hardware timestamps on the NIC/switching chip, boundary/transparent clocks, and (optionally) SyncE. PTP turns "source-network" errors from uncontrollable fluctuations into budgetable, attributable, and auditable quantities of work through hardware timestamps on NICs/switch chipsets and (optional) SyncE.
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