Status analysis and development trends of hybrid ground-satellite communication systems in geostationary orbits

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Abstract

This paper presents modern methods for achieving global communication coverage through NTN networks. The work provides an analysis of two key architectures: Non-geostationary-satellite networks (Non-GSO) and geostationary orbit systems (GSO). Particular attention is paid to implemented direct-to-device satellite projects via GSO, such as Tiantong and Skylo, which enable the use of standard smartphones without additional equipment. The advantages and limitations of each approach are examined, as well as their potential as an alternative to Non-GSO-based services. In conclusion, the prospects for implementing similar technologies in Russia using domestic satellite constellations to ensure connectivity are discussed.

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About the authors

O. A. Ivanov

ФГАУ НИЦ Телеком

Author for correspondence.
Email: journal@electronics.ru

к.воен.н., и.о. генерального директора

Russian Federation

E. E. Devyatkin

ФГАУ НИЦ Телеком

Email: edevyatkin@niir.ru

к.э.н., директор Центра исследования перспективных беспроводных технологий связи

Russian Federation

V. O. Tikhvinskiy

МГТУ им. Н.Э. Баумана и СевГУ; ФГАУ НИЦ Телеком

Email: vtniir@mail.ru

д.э.н., академик РАЕН, проф., главный научный сотрудник

Russian Federation

A. S. Pastukh

ФГАУ НИЦ Телеком

Email: a.pastukh@niir.ru

начальник лаборатории

Russian Federation

D. I. Kalugina

ФГАУ НИЦ Телеком

Email: kaluginadi@niir.ru

специалист

Russian Federation

References

  1. ABI Research, the Ascending satellite NTN market [Электронный ресурс]. URL: https://go.abiresearch.com/lp-the-ascending-satellite-ntn-market (дата обращения: 05.08.2025).
  2. ABI Research’s latest white paper explores the ascending satellite NTN market [Электронный ресурс]. URL: https://www.abiresearch.com/press/iot-and-ntn-mobile-technologies-are-propelling-a-us124-billion-satellite-service-market (дата обращения: 01.08.2025).
  3. Non-terrestrial Networks Opportunities & Challenges. Whitepaper of the GSMA, June 2025 [Электронный ресурс]. URL: https://www.gsma.com/solutions-and-impact/technologies/networks/gsma_resources/non-terrestrial-networks-opportunities-and-challenges/ (дата обращения: 08.08.2025).
  4. Kumar Y. Tower less direct satellite mobile communication Bridging the Gap: A Comprehensive Analysis of China’s Tiantong Satellite Initiative in Revolutionizing Smartphone Communications. [Электронный ресурс]. URL: https://www.researchgate.net/publication/379807203_TOWER_LESS_DIRECT_SATELLITE_MOBILE_COMMUNICATION_Bridging_the_Gap_A_Comprehensive_Analysis_of_China’s_Tiantong_Satellite_Initiative_in_Revolutionizing_Smartphone_Communications (дата обращения: 08.08.2025).
  5. Регламент радиосвязи. Женева: МСЭ, 2024. 455 c.
  6. Skylo Introduces Satellite Connectivity for Smartphones with Snapdragon. Share URL: [Электронный ресурс]. https://www.businesswire.com/news/home/20240912596149/en/Skylo-Introduces-Satellite-Connectivity-for-Smartphones-with-Snapdragon (дата обращения: 01.08.2025).
  7. GPP TR 38.882. Study on requirements and use cases for network verified UE location for Non-Terrestrial-Networks (NTN) in NR. 2022.
  8. GPP TR 23.700-28. Study on Integration of satellite components in the 5G architecture; Phase 2. 2022.

Supplementary files

Supplementary Files
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1. JATS XML
2. Fig.1. Tiantong system service areas [4]

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3. Fig.2. The service area for subscriber mobile devices with narrowband communication services in satellite partner networks of the Skylo operator

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4. Fig.3. Architecture of the Skylo operator communication system [6]

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5. Fig.4. Service area of the EchoStar 21 spacecraft

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6. Fig.5. Inmarsat spacecraft service area in bands n255 and n256

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Copyright (c) 2025 Ivanov O.A., Devyatkin E.E., Tikhvinskiy V.O., Pastukh A.S., Kalugina D.I.