Journal of Korean Institute of Industrial Engineers (대한산업공학회지)

Korean Institute of Industrial Engineers (대한산업공학회)
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Quality of Service Assurance Model for AMR Voice Traffic in Downlink WCDMA System

순방향 WCDMA 채널에서 AMR 음성 트래픽의 품질 보증 모델

  • Jung, Sung Hwan (Department of Industrial Engineering, Seoul National University) ;
  • Hong, Jung Wan (Department of Industrial Systems Engineering, Hansung University) ;
  • Lie, Chang Hoon (Department of Industrial Engineering, Seoul National University)
  • 정성환 (서울대학교 산업공학과) ;
  • 홍정완 (한성대학교 산업시스템공학과) ;
  • 이창훈 (서울대학교 산업공학과)
  • Published : 2007.06.30
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Abstract

We propose the QoS (Quality of Service) assurance model for AMR (Adaptive MultiRate) voice users considering the capacity and service quality jointly in downlink WCDMA system. For this purpose, we introduce a new system performance measure and the number-based AMR mode allocation scheme. The proposed number-based AMR mode allocation can be operated only with the information of total number of ongoing users. Therefore, it can be more simply implemented than the existing power-based allocation. The proposed system performance measure considers the stochastic variations of AMR modes of ongoing users and can be analytically obtained using CTMC (Continuous Time Markov Chain) modeling. In order to validate the proposed analytical model, a discrete event-based simulation model is also developed. The performance measure obtained from the analytical model is in agreement with the simulation results and is expected to be useful for parameter optimization.

Keywords

References

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