摘要
创新搭建VoLTE MOS评估系统(EMI),基于无线侧数据评估现网用户通话质量。以ITU-T标准化G.107建议为依据,利用E-Model模型预测语音质量。考虑语音信号传输过程中若干因素,如延时、噪声、回音、编码器性能、丢包等网络损伤因素对语音质量的影响并将其综合为参数R,用以评估该语音呼叫的主观品质。
In this study,a new VoLTE MOS evaluation system(EMI)was developed to assess the quality of call quality of exist?ing networks based on wireless side data.Based on ITU-T standard G.107recommendations,the E-Model model is used to pre?dict voice quality.The influence of network impairment factors such as delay,noise,echo,encoder performance and packet losson the speech quality are considered and integrated into the parameter R to assess the subjective quality of the voice call.
作者
刘毅
孔建坤
牛海涛
张振刚
LIU Yi;KONG Jiankun;NIU Haitao;ZHANG Zhengang(CHINA MOBILE GROUP SHANDONG CO.LTD.NETWORK DEPARTMENT, JINAN 25001)
出处
《现代电信科技》
2017年第1期71-76,共6页
Modern Science & Technology of Telecommunications
