전자통신동향분석 (Electronics and Telecommunications Trends)

한국전자통신연구원 (Electronics and Telecommunications Research Institute)
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ITU-R의 협대역 이동위성업무를 위한 주파수 분배 연구 현황

ITU-R Study on Frequency Allocation to Narrowband Mobile Satellite Services (NB-MSS)

  • 발행 : 2021.12.01
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초록

As the global demand for satellite IoT services using small satellites increases, interest in their frequency requirements has also increased. Consequently, International Telecommunication Union Radiocommunication Sector (ITU-R) preparatory studies for WRC-23 include AI 1.18, which considers new frequency allocations for narrowband mobile satellites. This agenda item was issued in accordance with Resolution 284 (WRC-19), and contributions and reviews by government and satellite operators are underway at ITU-R SG4 WP4C with the aim of completing the study in 2023. Resolution 248 (WRC-19) considers the conditions for transmission of candidate bands and satellites and terminals for narrowband mobile satellite, and all contributions should satisfy narrowband mobile satellite system characteristics parameters within these conditions. However, among the current transmission specifications, there are several views on the exact definition of satellite e.i.r.p., and the derivation schedule of characteristic system parameters for the study is slower than that of the original work schedule. The goal of this paper is to examine the outline of WRC-23 AI 1.18 and the main content of Resolution 284 (WRC-19) and to determine the status of studies related to WRC-23 AI 1.18. The ITU-R's study on this agenda includes updating work schedules, developing the draft required spectrum and system characteristics parameter reports/recommendations, developing draft CPM reports, and examining the various views of transmission specifications in Resolution 284 (WRC-19). Focusing on candidate bands in Region 1 (Europe and Africa) and Region 2 (America), the current status of use in Korea is investigated and future countermeasures in Korea are investigated. In addition, we would like to examine the trend of narrowband mobile satellite through satellite frequency and service status and planning of satellite IoT operators, such as EchoStar, Omnispace, and Sateliot that are participating in the ITU-R study.

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과제정보

본고는 2021년도 과학기술정보통신부의 재원으로 정보통신기획평가원의 지원을 받아 수행된 연구임[2021-0-00719, 비정지궤도 위성망 주파수 간섭평가/공유기술 개발].

참고문헌

  1. Rec. ITU-R SA.1158-3, 2003.
  2. ITU-R Resolution 248 (WRC-19), 2019.
  3. ITU-R WP4C, Report of the twenty-sixth meeting of Working Party 4C (5-13 July 2021), Annex 12 - Work plan for WRC-23 agenda item 1.18, 2021, https://www.itu.int/md/R19-WP4C-C0245/en
  4. ITU-R WP4C, Report of the twenty-sixth meeting of Working Party 4C (5-13 July 2021) (Virtual Meeting), Annex 8-Working document towards a preliminary draft new Report ITU-R M.[NB-MSS], 2021, https://www.itu.int/md/R19-WP4C-C0245/en
  5. ITU-R WP4C, Report of the twenty-sixth meeting of Working Party 4C (5-13 July 2021) (Virtual Meeting), Annex 9-Working document towards a preliminary draft new Report/[Recommendation] ITU-R M.[NB.MSS.COMPATIBILITY], 2021, https://www.itu.int/md/R19-WP4C-C-0245/en
  6. 대한민국 주파수 분배표, 2020년.
  7. https://www.satellitetoday.com/iiot/2021/05/04/echostar-mobile-and-semtech-to-test-satellite-iot-connectivity-service
  8. https://www.semtech.com/company/press/semtech-and-echostar-mobile-to-test-satellite-iot-connectivity-service-integrated-with-lorawan?
  9. https://www.nanosats.eu/org/helios-wire
  10. https://omnispace.com/omnispace-selects-thales-alenia-space-to-develop-satellite-infrastructure-for-its-global-hybrid-network-vision
  11. https://www.intelligent-aerospace.com/satcom/article/14199988/lockheed-martin-omnispace-5g
  12. https://www.satellite-evolution.com/post/3gpp-endorses-the-sateliot-scenario-and-includes-nanosatellite-constellation-in-5g-iot-standard
  13. https://directory.eoportal.org/web/eoportal/satellite-missions/s/sateliot-iot
  14. A. Minea and J.A. Manner, Reply Comments in Opposition of Dish Network Corporation, Echostar Satellite Services LLC, Echostar Global Pty Ltd, Echostar Mobile Limited and Hns de Mexico S.A. DE C.V., Dec. 21, 2020.