전자통신동향분석 (Electronics and Telecommunications Trends)

한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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고정위성업무 Ka 주파수 대역을 이용하는 이동형 지구국(ESIM) 운용 방안 연구 동향

Consideration of Research Activity on Earth Stations in Motion Communicating with the GSO FSS Satellite in the Ka band in the ITU-R

  • 발행 : 2019.06.01
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초록

The Earth Stations in Motion (ESIM) system is one of the most modern satellite systems, providing high-speed and high-capacity communication with mobility. To facilitate ESIM in the Ka band, operational, technical, and regulatory studies have been conducted in the International Telecommunication Union Radiocommunication Sector (ITU-R) since 2016. In this paper, we introduce the ESIM and discuss its system characteristics and frequency sharing issues with respect to existing services in the same frequency bands. Taking into account current standardization activity in the ITU-R, we provide the latest study results of ESIM operation based on the Conference Preparatory Meeting Report for the World Radiocommunication Conference-19.

키워드

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그림 1 ESIM 운용 예

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그림 2 M-ESIM-지상업무 간섭 시나리오

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그림 3 A-ESIM-지상업무 간섭 시나리오

표 1 항공기 통신 예상 성장률

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표 2 Antenna characteristics tail mount ESIM[2]

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표 3 Antenna characteristics tail mount ESIM[2]

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표 4 Antenna characteristics for maritime ESIM[2]

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표 5 WRC-15, WRC-19 ESIM 이슈 비교

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참고문헌

  1. M. Franci, "Earth Stations in Motion in FSS Ka-band," Feb. 2016. Available at https://www.inmarsat.com/blog/earth-stations-in-motion-in-fss-kaband
  2. ITU-R, "Operation of earth stations in motion (ESIM) communicating with geostationary space stations in the fixed-satellite service allocations," Annex 12 to Doc.4A/826, 2018.
  3. Comsys, "The Comsys Maritime VSAT Report, 4th edition," 2015.
  4. ITU-R, "Statistical methodologies to estimate the interference from land earth stations in motion (L-ESIM) communicating with geostationary space stations in the fixed-satellite service into mobile service (MS) stations operating in the frequency band 27.5-29.5 GHz," Annex 17 to Doc 4A/826, 2018.
  5. ITU-R, "Sharing and compatibility between earth stations in motion operating with geostationary FSS networks and current and planned stations of the MS in the frequency band 27.5-29.5 GHz," Annex 14to Doc. 4A/826, 2018.
  6. CPM19-2, "CHAPTER 3, AGENDA ITEM 1.5," Rev. 1 to Doc. CPM19-2/237, 2019.