网络实时音频QoS性能分析新方法  

A Novel QoS Analytic Method for Real-time Audio over Networks

作　　者：董昕 王杰 邹巍 DONG Xin;WANG Jie;ZOU Wei(Computer Engineering College,Chengdu Technological University,Chengdu 611730,China;Laboratory of Operation and Application in Electromagnetic Domain,Chengdu 610036,China;Veritas Technologies LLC Chengdu Branch,Chengdu 610094,China)

机构地区：[1]成都工业学院计算机工程学院,成都611730 [2]电磁空间作战与应用重点实验室,成都610036 [3]华睿泰科技有限公司成都分公司,成都610094

出　　处：《电讯技术》2018年第9期1096-1102,共7页Telecommunication Engineering

基　　金：四川省教育厅自然科学重点项目(18ZA0018)

摘　　要：针对通信系统中不同编码模式的网络实时音频传输时延、抖动和丢包率等性能指标的检测精度及效率问题,提出了一种网络实时音频服务质量(QoS)性能分析的新方法。该新方法基于音频(声码)识别技术,精确得到语音延迟和抖动;基于信令辅助技术,检查数据包的转换情况,得到精确丢包率。该方法改进了现有的不同编码模式下传输时延的测量方法,提高了传输时延及抖动的测量精度,并实现了音频数据丢包率的有效度量,能有效地支持语音QoS性能分析;并且可提供可视化分析及直观地展示统计结果,支持多种网络协议和测试场景,具备可重用性,可在其他网络实时音频测试环境中推广和部署。To improve the precision and efficiency of measuring and analyzing real-time audio metrics over networks such as audio transmission delay,jitter and packet loss rate for digital communication systems,this paper introduces a novel method to analyze the real-time audio Quality of Service(QoS)performance metrics over networks.Using audio recognition technology,this method can get accurate audio delay and jitter′s value and by using signaling aided technology it can track transformation of data packet to get packet loss rate.It improves current method to measure audio transmission delay,enhances audio transmission delay and jitter measurement accuracy,and realizes the measurement of packet loss rate.Project practices prove that this method supports several network protocols and testing scenarios.Also it can provide visualization operation options and graphical statistics results.This method deserves the promotion and deployment in other real-time audio systems.

关 键 词：陆地集群通信系统 实时音频 服务质量性能指标分析 

分 类 号：TN929.52[电子电信—通信与信息系统]