IE interfaces (산업공학)

Korean Institute of Industrial Engineers (대한산업공학회)
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Performance Analysis of Soft Handoff Region Ratio in CDMA System Considering System Capacity and Traffic Load

CDMA망에서 시스템 용량과 트래픽 부하의 변화를 반영한 핸드오프 영역 비율에 대한 성능분석

  • Jung, Sung-Hwan (Department of Industrial Engineering, Seoul National University) ;
  • Hong, Jung-Wan (Department of Industrial and Systems Engineering, Hansung University) ;
  • Lee, Sang-Cheon (Division of Industrial and Systems Engineering, ERI, Gyeongsang National University) ;
  • Lie, Chang-Hoon (Department of Industrial Engineering, Seoul National University)
  • 정성환 (서울대학교 산업공학과) ;
  • 홍정완 (한성대학교 산업시스템공학과) ;
  • 이상천 (경상대학교 산업시스템공학부) ;
  • 이창훈 (서울대학교 산업공학과)
  • Received : 20061000
  • Accepted : 20070300
  • Published : 2007.06.30
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Abstract

In code-division multiple-access (CDMA) systems with soft handoff, mobile station (MS) within soft handoff region can use multiple radio channels and receive their signals from multiple base stations (BSs) simultaneously. In this paper, the effects of soft handoff region ratio (SHRR) on reverse link of a CDMA cellular system are analytically investigated. In order to analyze the network performance and quality of service (QoS) perceived by users more realistically, both the soft capacity increasing factor and the traffic load variation affected by SHRR are jointly considered and a two-dimensional continuous time Markov chain (CTMC) model is built. In the numerical example, it is observed that the optimal guard channel exists according the variations of the traffic load and propagation conditions when the proper value of SHRR is determined.

Keywords

References

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