Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Analysis of Interference Effect on FS System from ESIM with Motion Characteristics

이동 특성에 기반한 ESIM이 FS 시스템에 미치는 간섭영향 분석

  • Kang, Young-Houng (School of Computer, Information and Communication Engineering, Kunsan University) ;
  • Oh, Dae-Sub (Satellite Technology Research Group, ETRI)
  • 강영흥 (군산대학교 컴퓨터정보통신공학부) ;
  • 오대섭 (한국전자통신연구원 위성기술연구그룹)
  • Received : 2017.09.28
  • Accepted : 2017.10.12
  • Published : 2017.10.31
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Abstract

In recent years, owing to the growing user demand for the two-way internet service based on the mobile global broadband communications, a new type of satellite terminal has been developed, known as ESIM(Earth Station in Motion). This service was required by Resolution 158(WRC-15) to study on the coexistence with the co-primary FS(Fixed Service) in 27.5-29.5 GHz as a FSS(Fixed Satellite Service) uplink. In this paper, the average received power on ESIM within -10 dB of beam width of FS and its outage probability was analyzed theoretically and also simulated to account for the azimuth angle with uniform distribution. From the results, it can be concluded that this theoretical analysis is very useful to analyze the interference from ESIM into FS based on the statistical and probabilistic method. Therefore, it is necessary to control the azimuth angle due to a moving terminal as well as the inclination angle of moving path, the operation hours, and the speed of ESIM to protect the co-primary FS.

최근 이동형 글로벌 광대역 통신 및 위성기반의 양방향 인터넷 서비스에 대한 수요가 증가함에 따라 ESIM(Earth Station in Motion)이라는 새로운 형태의 위성 터미널이 개발되고 있다. 이 시스템은 ITU-R Resolution 158(WRC-15)에서 FSS(Fixed Satellite Service) 업링크에 27.5-29.5 GHz 대역사용을 고려하고 있어 동일 대역에 이미 분배된 FS와의 간섭분석에 대한 연구가 요구되고 있다. 이에 본 논문에서는 FS(Fixed Service) 무선국 방향으로 보어사이트를 향하는 ESIM의 방위각을 일양분포의 랜덤특성을 고려하여 FS 수신안테나의 -10 dB 빔폭 내의 평균 수신전력 및 간섭기준 초과확률에 대해 이론해석과 시뮬레이션 분석을 수행하였다. 그 결과 이론해석의 타당성을 보여주며, 동일 대역의 FS를 보호하기 위해서는 ESIM 이동 터미널의 보어사이트에 대한 이동경로 기울기 각도, 운영시간, 이동속도 등을 종합적으로 고려해서 간섭기준이 마련되어야 한다.

Keywords

References

  1. E. G. Cuevas, and C. V. Weerackody, "Technical characteristics and regulatory challenges of communications satellite earth stations on moving platforms," Johns Hopkins APL Technical Digest, Vol. 33, No. 1, pp. 37-51, 2015.
  2. International Telecommunication Union, "Methodologies to estimate the off-axis e.i.r.p. density levels and to assess the interference towards adjacent satellites resulting from pointing errors of vehicle-mounted earth stations in the 14 GHz frequency band," Recommendation ITU-R S.1857, Jan. 2010.
  3. Y. H. Kang, and D. S. Oh, "Analysis of interference effect of ESIM on FS system considering the antenna pointing error," The Journal of Korea Navigation Institute, Vol. 20, No. 6, pp.503-510, Dec. 2016.
  4. F. Guidolin, M. Nekovee, L. Badia, and M. Zorzi, "A study on the coexistence of fixed satellite service and cellular networks in a mmWave scenario," in IEEE ICC 2015, Wireless Communication Symposium, pp.2444-2449, June 2015.
  5. International Telecommunication Union, "Guidance for determination of interference from earth stations on board vessels to stations in the fixed service when the earth station on board vessels is within the minimum distance," Recommendation ITU-R SF.1649-1, Aug. 2008.
  6. International Telecommunication Union, "The minimum distance from the baseline beyond which in-motion earth stations located on board vessels would not cause unacceptable interference to the terrestrial service in the bands 5925-6425 MHz and 14-14.5 GHz," Recommendation ITU-R SF.1650-1, Feb. 2005.
  7. International Telecommunication Union, "Prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 0.1 GHz," Recommendation ITU-R P.452-16, July 2015.
  8. International Telecommunication Union, "Reference radiation patterns for fixed wireless system antennas for use in coordination studies and interference assesment in the frequency range from 100 MHz to about 70 GHz," Recommendation ITU-R P.699-7, Apr. 2006.
  9. International Telecommunication Union, "Propagation by diffraction," Recommendation ITU-R P.526-13, Nov. 2013.
  10. International Telecommunication Union, "Attenuation by atmospheric gases," Recommendation ITU-R P.676-11, Sep, 2016.
  11. International Telecommunication Union, "Maximum permissible levels of off-axis e.i.r.p. density from earth stations in geostationary-satellite orbit networks operating in the fixed-satellite service transmitting in the 6 GHz, 13 GHz, and 30 GHz frequency bands," Recommendation ITU-R S.524-9, Apr. 2006.