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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis TVWS Propagation Environment for Indoor M2M Service

실내 M2M 서비스를 위한 TVWS 전파 환경 분석

  • Yun, Deok-Won (Department of Imformation and Communication Engineering, Soongsil University) ;
  • Chang, Hyung-Min (Department of Imformation and Communication Engineering, Soongsil University) ;
  • Lee, Won-Cheol (School of Electronics Engineering, Soongsil University)
  • 윤덕원 (숭실대학교 정보통신공학과) ;
  • 장형민 (숭실대학교 정보통신공학과) ;
  • 이원철 (숭실대학교 정보통신전자공학부)
  • Received : 2013.06.05
  • Accepted : 2013.07.05
  • Published : 2013.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, the propagation characteristics for ISM(Industrial Scientific and Medical) and TVWS(TV White Space) in indoor building environment are analyzed in comparison with theoretical and experimental results, the excellent propagation characteristics of the TVWS is confirmed. To this end, signals which have center frequencies of 503 MHz and 2.4 GHz are generated in building propagation environment. Through that, received power strength is measured according to the location and measured path loss is analyzed. Theoretical path loss is calculated using Hata, Extended Hata, Extended Hata SRD, ITU-R P.1238 and reliability for channel model in indoor environment is analyzed.

본 논문은 건물 내 환경에서 기존의 ISM(Industrial Scientific and Medical) 대역과 TVWS(TV White Space) 대역의 전파 특성을 이론 및 실험을 통하여 비교 분석하고, TVWS의 우수한 전파 특성을 확인한다. 이를 위하여 빌딩 전파 환경에서 503 MHz와 2.4 GHz의 중심 주파수를 갖는 전파 신호를 발생시켜 위치에 따른 수신 전력 강도를 측정하고, 측정한 경로 손실을 확인한다. 여기서 이론적 경로 손실을 계산하기 위하여 Hata, Extended Hata, Extended Hata(SRD), ITU-R P.1238 모델을 이용하였고, 측정한 경로 손실 값과의 비교 분석을 통하여 실내 환경에서 채널 모델의 신뢰성 정도를 분석한다.

Keywords

References

  1. J. Park, S. Park, D. Kim, P. Cho, and K. Cho, "Experiments on radio interference between wireless LAN and other radio devices on a 2.4 GHz ISM band", Proc. IEEE Vehicular Technology Conference, 2003.
  2. 이상윤, "주파수 공유기술 및 TVWS 정책동향", 방송통신정책, KISDI, 22(14), pp. 24-44, 2010년 8 월.
  3. 이원철, 최주평, "TV White Space 활용을 위한 Geolocation DB 기술", 한국통신학회지, 30(1), pp. 47- 57, 2013년 11월.
  4. Y. Okumura, E. Ohmori, T. Kawano, and K. Fukuda, "Field strength and its variability in VHF and UHF land-mobile service", Review of the Electrical Communication Laboratory, vol. 16, no. 9-10, pp. 825-873, 1968.
  5. COST 231, "Urban transmission loss models for mobile radio in the 900- and 1,800 MHz bands (Revision 2)", COST 231 TD(90)119 Rev. 2, The Hague, The Netherlands, Sep. 1991.
  6. http://tractool.seamcat.org/wiki/Manual/Propagation Models/ExtendedHata
  7. ITU-R P.1238-7, "Propagation data and prediction methods for the planning of indoor radio communication system and the radio local area network in the frequency range 900 MHz to 100 GHz", Feb. 2012.