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VoIP Quality Metric and Quality-based Accounting Scheme  

Jung, Youn-Chan (가톨릭대학교 정보통신전자공학과 통신네트워크 연구실)
Ann, Ibanez Al (가톨릭대학교 정보통신전자공학과 통신네트워크 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.1B, 2010 , pp. 27-34 More about this Journal
Abstract
As VoIP systems move to wireless environments with much higher average packet loss rates than wired networks, it becomes less possible for the network to assure a reasonable QoS. So, real-time quality monitoring for mobile VoIP applications is an important issue to be explored. In this paper, we explore perceptual quality dependency on two parameters: the burst loss rate and average burst length. Also, we propose a simple 'moving average' approach with $\alpha$ aiming to measure those parameters on real-time basis. In order to find how accurately the two parameters measured estimate the real perceptual quality, we compare actual measured PESQ scores with estimated value by matching the measured quality metric to the trained MOS table. Finally, we propose the quality-based accounting system, which can set obvious continuities between quality and billing.
Keywords
Quality of Service; VoIP; Quality Monitoring; Quality Metric; Quality-based accounting;
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