Model and implementation of DMR Tier III radio network capacity management under resource scarcity conditions based on access lists

The article discusses the problem of lack of frequency resource in the VHF and UHF bands for trunked radio networks used in critical industries such as civil aviation and rail transport. A method for optimizing calls in DMR Tier III networks based on dynamic load distribution between base stations is proposed. The developed software includes three modules: a data converter, an analytical module, and a visualization module. Mathematical models of information processing are presented, as well as the results of testing the system, demonstrating an increase in DMR Tier III network bandwidth.

1. О порядке распределения полос радиочастот: постановление Правительства РФ от 2 апр. 2020 г. № 539 (ред. от 25.12.2023) // Собрание законодательства РФ. – 2020. – № 15. – Ст. 2319.

2. R. Ekman et al., “Measurements to Study the Coexistence of Private LTE TDD Networks in 2.3 GHz Band,” in 2021 29th Conference of Open Innovations Association (FRUCT), 2021, pp. 102108.

3. W. Kampichler, D. Eier, and F. Liberal, “Improvements in Operational Efficiency at Airports Using Lie Networks for Communications,” in 2022 Integrated Communication, Navigation and Surveillance Conference (ICNS), 2022, pp. 1–9.

4. А. В. Ильченко, «Конвертер данных CMSS: свидетельство о государственной регистрации программы для ЭВМ № 2020662503,» зарегистрировано 06.10.2020.

5. Functional architecture and information flows for Mission Critical Push To Talk: 3GPP Technical Specification 23.179. [Электронный ресурс]. URL: https://www.3gpp.org/ftp/Specs/archive/23_series/23.179/

6. Digital Mobile Radio (DMR) Systems: ETSI TS 102 361-1 V.2.5.1*. [Электронный ресурс]. URL: https://www.etsi.org/deliver/etsi_ts/102300_102399/10236101/02.05.01_60/ts_10236101v020501p.pdf

7. DMR Tier III Technology Overview: Motorola Solutions. [Электронный ресурс]. URL: https://www.motorolasolutions.com/

8. Principal component analysis: a review and recent developments / I. T. Jolliffe, J. Cadima // Philosophical Transactions of the Royal Society A. – 2016. – Vol. 374, iss. 2065. – Art. 20150202.

9. I. T. Jolliffe and J. Cadima, “Principal component analysis: a review and recent developments,” Philosophical Transactions of the Royal Society A, vol. 374, iss. 2065, Art. 20150202, 2016, doi: 10.1098/rsta.2015.0202.

10. А. А. Фролов, «Анализ современных стандартов: McWILL, TD-SCDMA, WCDMA, IEEE 802.15.3a для применения в СШП-системах,» T-Comm, т. 6, № 9, с. 58–63, 2012.

11. E. Dahlman, S. Parkvall, and J. Skold, “5G NR: The Next Generation Wireless Access Technology,” Academic Press, 2020.

12. А. В. Ильченко и Т. Е. Ильченко, «Исследование потоков информации в транкинговой радиосети для операций наземного обслуживания воздушных судов,» Вестник Российского университета дружбы народов. Серия: Инженерные исследования, т. 24, № 3, с. 223–232, 2023, doi: 10.22363/2312-8143-2023-24-3-223-232.