한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제20권4호
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  • Pages.366-374
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  • 2009
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  • 1226-3133(pISSN)
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  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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C-대역에서 IMT 기지국과 FSS 지구국간의 주파수 공유 연구

Sharing Studies between IMT Base Stations and FSS Earth Station in C-band

  • 강영흥 (군산대학교 전자정보공학부) ;
  • 박종민 (한국전자통신연구원 방송통신융합연구부문 광역무선전송연구팀) ;
  • 오대섭 (한국전자통신연구원 방송통신융합연구부문 광역무선전송연구팀)
  • Kang, Young-Heung (School of Electronic & Information Eng., Gunsan National University) ;
  • Park, Jong-Min (Broadcasting & Telecommunications Convergence Research Laboratory, Global Area Wireless Transmission Research Team, Electronics and Telecommunications Research Institute) ;
  • Oh, Dae-Sub (Broadcasting & Telecommunications Convergence Research Laboratory, Global Area Wireless Transmission Research Team, Electronics and Telecommunications Research Institute)
  • 발행 : 2009.04.30
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초록

ITU에서는 고정 위성 업무(이하 FSS: Fixed Satellite Service) 하향 회선(space-to-earth)용으로 광범위하게 사용 되어온 3,400$\sim$4,200 MHz 대역을 IMT 대역으로 검토한 바 있다. 이에 본 논문에서는 이 대역에서 다수의 IMT 기지국들이 FSS 위성지구국에 미치는 간섭 영향을 이론적으로 분석한 후, 시뮬레이션을 통해 기지국 안테나의 틸트(tilt) 각도 및 3 섹터(sector) 등에 의한 간섭 경감 기법을 고려하여, IMT 기지국과 FSS 지구국간의 주파수 공유 연구 결과를 고찰한다. 또한, 장기간(long-term) 및 단기간(short-term) 간섭 기준치를 이용, 두 무선국간의 주파수 공유를 위 한 FSS 지구국 조정 영 역(coordination area)을 도출하여 향후 3,400$\sim$4,200 MHz 대역에서 IMT 서비스와 기존 FSS 서비스간의 주파수 공유 기준치를 제공하고자 한다.

ITU has considered the 3,400$\sim$4,200 MHz band, which is allocated worldwide on a primary basis to the FSS, as a candidate band for future development of IMT system. In this band, this paper presents the results of the sharing studies performed between FSS and IMT systems through the theoretical and simulation analysis on the interference from multiple IMT base stations into a receiving FSS earth station considering the interference mitigation techniques such as antenna tilt angle and 3 sectors on the IMT base station. By using the long-term and short-term interference threshold, the coordination areas for the FSS earth station are provided to share frequency in 3,400$\sim$4,200 MHz band between FSS earth station and multiple IMT base stations in future.

키워드

참고문헌

  1. ITU-R Recommendation M.1645, "Framework and overall objectives of the future development of IMT- 2000 and systems beyond IMT-2000", Jun. 2006
  2. ITU-R Report M.2078, 'Estimated spectrum bandwidth requirements for the future development of IMT-2000 and IMT-Advanced', 2006
  3. WiMAX Forum, "Compatibility of service using Wi MAX technology with satellite services in the 2.3~2.7 GHz and 3.3~3.8 GHz bands", 2007
  4. ITU-R Report M.2109, "Sharing studies between IMT-Advanced systems and geostationary satellite networks in the fixed-satellite service in the 3,400-4,200 and 4,500-4,800 MHz frequency bands", 2007
  5. ITU-R Recommendation S.465-5, "Reference earth- station radiation pattern for use in coordination and interference assessment in the frequency range from 2 to about 30 GHz", Apr. 1993
  6. ITU-R Recommendation F.1336-1, "Reference radiation patterns of omnidirectional, sectoral and other antennas in point-to-multipoint systems for sue in sharing studies in the frequency range from 1 GHz to about 70 GHz", May 2000
  7. ITU-R 9D/173, "Proposed revision of recommendation ITU-R F.1336-1", Feb. 2002
  8. TU-R Recommendation P.452-11, "Prediction procedure for the evaluation of microwave interference between stations on the surface of the Earth at frequencies above about 0.7 GHz", 2003
  9. Y. R. Tsai, J. F. Chang, "Feasibility od adding a personal communications network to an existing fixed- service microwave system", IEEE Trans. Commun., vol. COM-44, pp. 76-83, Jan. 1996 https://doi.org/10.1109/26.476099
  10. ITU-R Recommendation S.1432, "Apportionment of the allowable error performance degradations to fixed-satellite service(FSS) hypothetical reference digital paths arising from time invariant interference for systems operating bellow 15 GHz", 2000
  11. ITU-R Recommendation SF.1006, "Determination of the interference potential between earth stations of the fixed-satellite service and stations in the fixed service", 1993