骨干网中VoIP语音质量的快速评估方法  

Fast method for evaluating VoIP speech quality in network backbone

作　　者：黄鹂声[1] 周明天[1] 汪文勇[1] 

机构地区：[1]电子科技大学计算机科学与工程学院,成都610054

出　　处：《计算机应用研究》2008年第10期3119-3121,共3页Application Research of Computers

摘　　要：提出一种基于被动模式流量分析的VoIP语音质量评估方法,以帮助VoIP运营商对主干网中大量并发VoIP会话的通话质量进行实时监测。在流量采集的基础上,通过流跟踪算法获取VoIP会话的丢包、时延等基本性能指标;通过快速评估模型对VoIP会话的R和MOS值进行计算。实验证明,该方法性能较高,评估结果准确。This paper introduced a new passive method for VoIP speech quality evaluation, which helped to monitor service quality for parallel VoIP conversations in network backbone. Based on packet sniffing and flow tracing mechanism, this method measured several performance metrics（ such as IPLR, RTI＇） for each VoIP conversation, and calculated the R and MOS value with a fast model. Test result shows that this method workes with high efficiency and accuracy.

关 键 词：被动模式 流量测量 VOIP 语音质量 评估 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]