Journal of Korean Institute of Industrial Engineers (대한산업공학회지)

Korean Institute of Industrial Engineers (대한산업공학회)
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Quality of Service Parameters Estimation Model for Adaptive Bandwidth Service in Mobile Cellular Networks

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  • 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 : 2007.03.31
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Abstract

An adaptive framework paradigm where the bandwidth values of the ongoing calls vary according to the trafficsituations is one of the promising concepts for overcoming poor resource conditions due to handoffs in mobilecellular networks. However, quantifying the level of bandwidth degradation of the ongoing calls in an adaptiveframework is important in view of Quality of Service (QoS) Provisioning. Therefore we introduce new QoSparameters, the Degradation Degree Ratio (DDR), which represents the average portion of the degradationdegree during degradation pehod of a call, and the Degradation Area Ratio (DAR), which represents the averageratio of a call's degradation level considering both the period and the degree of degradation jointly in multi-levelbandwidth service. We also develop a new analytical model for estimating the QoS measures such as theDegradation Pehod Ratio (DPR), DDR and DAR. We show how to calculate the QoS measures and illustrate themethod by numerical examples. The proposed model can be used to determine the optimal parameter of theCAC scheme and analyze the sensitivity ofthe QoS parameters in adaptive networks.

Keywords

References

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