The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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A Study on Frequency Coordination between Fixed Wireless System and Mobile Base Station in Urban or Sub-urban Area

도심 또는 부도심에서 고정무선시스템과 이동기지국 간의 주파수 조정에 대한 연구

  • 서경환 (강남대학교 IoT전자공학과) ;
  • 박영민 (한국방송통신전파진흥원 전파진흥본부)
  • Received : 2017.10.26
  • Accepted : 2017.12.08
  • Published : 2017.12.31
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Abstract

Theoretical modelling and computational results for frequency coordination are presented over mobile base station and fixed wireless systems in urban or sub-urban area. Computational results with key parameters needed for interference analysis are performed and discussed in terms of system characteristics, propagation model, protection ratio, frequency dependent rejection, and discrimination angle with signal-interference plane. Based upon minimum coupling loss methodology, calculated interference powers of victim receiver for assumed system parameters are compared with maximum allowable interference power derived from protection ratio as functions of discrimination angle and distance including height-gain model in urban or sub-urban area. The proposed method is applicable for technical analysis on co-existence or interoperability for the various wireless systems, mandatory for frequency coordination or reallocation process.

본 논문에서는 도심 또는 부도심에서 고정무선시스템과 이동기지국 간의 주파수 조정을 위한 이론적 모델링 및 수치해석 결과를 제시한다. 간섭분석에 필요한 주요 변수인 시스템 특성, 전파전파 모델, 보호비, 주파수의존제거, 신호-간섭 평면의 변별각을 고찰하고, 이들에 대해 수치계산을 통해 결과를 도출한다. 최소커플링손실 방법을 기반으로 가정한 고정무선시스템과 이동기지국의 특성에 대해 도심 또는 부도심에서 높이-이득 모델, 변별각, 그리고 거리의 함수로 수신간섭전력을 계산하고, 그 결과들을 보호비로부터 유도된 최대허용간섭전력과 비교한다. 제시된 방법은 다양한 무선시스템의 주파수 조정 또는 재배치 과정에 요구되는 상호 공존 또는 양립성의 기술적 분석에 유용할 것으로 판단된다.

Keywords

References

  1. ITU, Radiocommunication sector (ITU-R), http://www.itu.int/itu-r.
  2. A study on radio frequency quality and service for frequency reallocation, Research Report, KCA, Korea, 2010.
  3. K.W. Suh and J.H. Lee, "Experimental analysis of frequency reallocation to FM broadcasting link system for effective use in 900 MHz band," Journal of Broadcast Engineering, Vol. 15, No. 1, pp.99-111, 2010. https://doi.org/10.5909/JBE.2010.15.1.099
  4. ITU, Rec. ITU-R SM.337, Frequency and distance separations, Switzerland 1997.
  5. ITU, Report ITU-R SM.2028-1, "Monte Carlo simulation methodology for the use in sharing and compatibility studies between different radio services or systems", 2002.
  6. NTIA technical report: INTERFERENCE PROTECTION CRITERIA Phase 1-Compilation from Existing Sources, NTIA Report 05-432, US Department of Commerce, Oct. 2005.
  7. ITU, Rec. ITU-R M.1461-1, Procedure for determining the potential for interference between radar operating in the radiodetermination service and systems in other services, Switzerland, 2003.
  8. ITU, Rec. ITU-R F.1095, "A procedure for determination coordination area between radio-relay stations of the fixed service".
  9. ITU, rec. ITU-R SF.1486, "Sharing methodology between fixed and wireless access systems in the fixed service and very small aperture terminals in the fixed-satellite service in the 3400-3700 Band. Switzerland, 2000.
  10. NTIA technical report, "technical characteristics of radiolocation systems operating in the 3.1-3.7 GHz band and procedures for assessing emc with fixed earth station receivers, NTIA TR-99-361. Dec. 1999.
  11. ECC Report 174: Compatibility between the mobile service in the band 2500-2690 MHz and the radiodetermination service in the band 2700-2900 MHz, March 2012.
  12. L. F. Abdulrazak and A. O. Arshed, "Interference Mitigation Technique through shielding and antenna discrimination," IJMUE, Vol. 10, No. 3, pp. 343-352, 2015
  13. N.H. Jeong, J.H. Lee, K.W. Suh, "Analysis of frequency sharing between mobile systems and radiolocation radars in VHF band", The 12th International Conference on Advanced Communication Technology (ICACT), Korea, pp.1179-1183. Feb. 7-10, 2010.
  14. D.J. Kim and K.S. Chung, "Study on coexistence through interference evaluation between 2.1 GHz band and adjacent band for LTE-Advanced service," JKIICE, Vol. 18, No. 1, p.32-41, 2014.
  15. J. S. Yang, Y. H. Kim, J. Y. Kim, "Research on Spectral Interference of Microwave Systems", The Journal of The Institute of Internet, Broadcasting and Communication (JIIBC), Vol. 12, No. 6, pp. 241-249, 2012. https://doi.org/10.7236/JIWIT.2012.12.6.241
  16. A study on analysis methodology of multi-interferences under dynamic warfare environment, Research Report, ADD, Dec. 2012.
  17. K. W. Suh and J. S. Jang, "A study on compatibility analysis based on minimum coupling loss applicable to frequency coordination combined with geographic information", IJMUE, Vol. 8, No. 6, 2013.
  18. K.W. Suh, A study on multi-site radar operations based on LFM signal, The Journal of the Institute of Internet, Broadcasting and Communication (IIBC), Vol. 15, No. 3, pp. 91-98, 2015. https://doi.org/10.7236/JIIBC.2015.15.3.91
  19. Roger L. Freeman, Radio system design for telecommunication, 2nd Ed., John Wiley & Sons, Inc. 1997.
  20. ITU, Report ITU-R M.2037, Technical feasibility of IMT in bands above 6 GHz. 2015.
  21. Shu Sun, George R. MacCartney, Jr., and Theodore S. Rappaport, "Millimeter-Wave Distance-Dependent Large Scale Propagation Measurements and Path Loss Models for Outdoor and Indoor 5G Systems", (EuCAP 2016), April. 2016.
  22. ITU, Rec. ITU-R F. 699, Reference radiation patterns for fixed wireless system antennas for use in coordination studied and interference assessment in the frequency range from 100 MHz to about 70 GHz, Switzerland, 2006.
  23. ITU, Rec. ITU-R P.452-16, Prediction procedure for the evaluation of microwave interference between stations on the surface of the Earth at frequencies above about 0.7 GHz.
  24. ETSI EN 301 669 1.2.1 2001-02, Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems carrying STM-4 in two 40 MHz channels or 2 $\times$ STM-1 in a 40 MHz channel with alternate channel arrangement, Sophia Antipolis, France, 2001.
  25. ITU, Rec. ITU-R F.1336-3, Reference radiation patterns of omnidirectional, sectoral and other antennas in point-to-multipoint systems for use in sharing studies in the frequency range from 1 GHz to about 70 GHz.