Improving the Accuracy of Time Synchronization Through Frequency Synchronization in Virtualized Integrated Systems
https://doi.org/10.31854/1813-324X-2025-11-6-78-86
EDN: QTKDTT
Abstract
Relevance. In recent years, virtualized integrated systems have widely become the base architectural solution for industrial automation systems. TSN technology is being used in their telecommunications networks, as it is the most suitable solution for mission-critical applications with stringent requirements for speed and guaranteed information delivery. The quality of TSN networks, in turn, depends on the accuracy of their time synchronization. Therefore, developing methods to improve the accuracy of time synchronization of packet-switched network devices is a pressing scientific and practical challenge.
Purpose of the work: to examine ways to improve the accuracy of time synchronization in networks of virtualized integrated systems using TSN technology, and the impact of network clock synchronization provided by synchronous Ethernet technology.
Methods used: the impact of network clock synchronization on the accuracy of timescale reference is assessed using the results of simulation modeling of time and clock synchronization processes in the AnyLogic environment.
Results: the paper presents a chain of interactions between information and telecommunication technologies, as well as supporting telecommunication subsystems, demonstrating in aggregate the operating principles of complex embedded computer systems and a method for determining their characteristics based on modeling. The results of simulation modeling are also presented, demonstrating that high accuracy of time scale binding and stability of its retention can be achieved through the joint implementation of frequency and time synchronization, which plays an important role in TSN application scenarios.
Practical significance: implementing frequency synchronization in a network supporting TSN technology enables high-precision time synchronization of network devices while using fewer synchronization messages to reduce the amount of service traffic. This allows that to save costs less stable clock generators may be used, as their frequency is consistently adjusted.
About the Author
N. L. Storozhuk
The Bonch-Bruevich Saint Petersburg State University of Telecommunications
Russian Federation
Russian Federation
References
1. Pahlevan M. Time Sensitive Networking for Virtualized Integrated Real-Time Systems. D.Sc Dissertation. Siegen: University of Siegen; 2019. 188 p.
2. Galchikhin V.I., Storozhuk N.L., Shitnikov V.I. Calculation of Standards for Error Indicators in Existing Digital Paths of the Interconnected Communication Network of Russia. Electrosvyaz. 2002;4:17−20. (in Russ.)
3. Kopetz H. Real-Time Systems, Design Principles for Distributed Embedded Applications. Cham: Springer; 2011. DOI:10.1007/b116085
4. Storozhuk M. Network Traffic Monitoring in Backbone Networks to Ensure the TSN Networks Operation. Last Mile. 2022;3(103):30–33. (in Russ.) DOI:10.22184/2070-8963.2022.103.3.30.33. EDN:WTTPBK
5. Craciunas S.S., Oliver R.S. Out-of-sync Schedule Robustness for Time-sensitive Networks. Proceedings of the 17th International Conference on Factory Communication Systems, WFCS, 09–11 June 2021, Linz, Austria. IEEE; 2021. p.75–82. DOI:10.1109/WFCS46889.2021.9483602
6. IEEE 802.1AS-2020. IEEE Standard for Local and Metropolitan Area Networks--Timing and Synchronization for Time-Sensitive Applications.
7. Vorobyov A.S., Storozhuk N.L. Trends in the Development of Network Synchronization Equipment. Radionavigaciya i vremya: trudy SZRC Koncerna VKO «Almaz – Antej». 2022;10(18):281. Pahlevan M. Time Sensitive Networking for Virtualized Integrated Real-Time Systems. D.Sc Dissertation. Siegen: Uni-versity of Siegen; 2019. 188 p.
8. Kogan S. 5G Networks: Timing Signal Distribution at the Optical Transport Layer. Part 2. Clock-Based Network Synchronisation. Last Mile. 2022;5(105):44–58. (in Russ.) DOI:10.22184/2070-8963.2022.105.5.44.58. EDN:STTKQU
9. GOST R 71148-2023. Requirements for the construction of synchronization systems of communication networks: circuit-switched communication networks, packet-switched communication networks. Moscow: Russian Institute of Standardization Publ.; 2024. (in Russ.)
10. Shvarts M.L., Ryzhkov A.V., Aladin V.M. Perspective Primary Standard of Time and Frequency for Frequency Systems and Time Support of Communication Networks. T-Comm. 2022;16(8):12–20. (in Russ.) DOI:10.36724/2072-8735-2022-16-8-12-20. EDN:GFOETJ
11. Chowdhury D. NextGen Network Synchronization. Cham: Springer; 2018. 269 p. DOI:10.1007/978-3-030-71179-5
12. Menendez Y. Improving synchronization accuracy with help from SyncE. URL: https://www.nokia.com/blog/improving-synchronization-accuracy-with-help-from-synce [Accessed 30.01.2025]
13. Rec. ITU-T G.8262/Y.1362 Timing characteristics of synchronous Ethernet equipment slave clock. 2015.
Review
For citations:
Storozhuk N.L. Improving the Accuracy of Time Synchronization Through Frequency Synchronization in Virtualized Integrated Systems. Proceedings of Telecommunication Universities. 2025;11(6):78-86. (In Russ.) https://doi.org/10.31854/1813-324X-2025-11-6-78-86. EDN: QTKDTT
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