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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Approximation to the Probability of Downlink Blocking between cdma2000 1X and WCDMA in Urban Handover Areas

도심 핸드오프 지역에서의 cdma2000 1X와 WCDMA간의 다운링크 블록킹 확률 근사

  • 박승근 (한국전자통신연구원) ;
  • 조경록 (충북대학교 정보통신공학과) ;
  • 박덕규 (목원대학교 정보통신공학과)
  • Published : 2003.02.01
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Abstract

This paper proposes downlink blocking model and approximation equation using lower bound approximation in order to determine the proper guard band between cdma2000 1X and WCDMA in handover areas. The frequency sharing conditions obtained by the model and approximation equation on blocking probability proposed in the paper, are co-site of base station and guard band higher than 1 MHz. Also, the proposed equation is in the form of Q-function. It is an analytical solution overcoming the drawback of recalculation, belonged to Monte-Carlo technique.

본 논문은 핸드오버 지역에서 cdma2000 1X와 WCDMA간의 적절한 가드 밴드를 결정하기 위하여 다운링크 블록킹을 모델화하고 lower bound approximation을 이용하여 다운링크 블록킹 확률의 근사식을 제안하고 있다. 본 논문의 연구결과에 의한 cdma2000 1X와 WCDMA간의 주파수 공유조건은 기지국의 공용화와 가드밴드(guard band) 1 MHz이상이다. 또한, 본 논문에서 제안된 다운링크 블록킹 확률 근사식은 Q-함수로 되어 있으므로 Monte-Carlo 방법이 가지고 있는 간섭 파라미터 변화에 따른 재계산(recalculation) 단점을 극복하는 해석 방법(analytical solution)이다.

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References

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