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A Study on Voice Communication Quality Criteria Under Mobile-VoIP Environments  

Choi, Jae-Hun (School of Electronic Engineering, Inha University of Incheon)
Seol, Soon-Uk (Platform Service Department Central R&D Laboratory, KT)
Chang, Joon-Hyuk (School of Electronic Engineering, Inha University of Incheon)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.2E, 2009 , pp. 35-42 More about this Journal
Abstract
In this paper, we present criteria of objective measurement of speech quality to provide the mobile-VoIP services efficiently over wireless mobile internet. The mobile-VoIP service, which is based on mobility and is error-prone compared to conventional VoIP over wired network, is about to be launched, but there have not been adequate quality indexes and the Quality of Service (QoS) standards for evaluating speech quality of Mobile-VoIP. In addition, there are many factors influencing on the speech quality in packet network of which packet loss contribute directly to the overall voice communication quality. For this reason, we adopt the Gilbert-Elliot Channel Model for modeling packet network based on IP and assess the voice quality through the objective speech method of ITU-T P. 862 PESQ and ITU-T P. 862.1 MOS-LQO under various packet loss rates in the transmission channel environments. Our simulation results address the specific criteria and QoS for the mobile-VoIP services in terms of the various packet loss environments.
Keywords
Mobile-VoIP; ITU-T P. 862; ITU-T P. 862. 1 MOS-LQO; Gilbert-Elliot Channel Model; Packet Loss;
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