分组网络中话音流量性能测量

ITI 2002. Proceedings of the 24th International Conference on Information Technology Interfaces (IEEE Cat. No.02EX534) Pub Date : 2002-11-07 DOI:10.1109/ITI.2002.1024722

V. Matic, A. Bazant, M. Kos

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引用次数: 1

摘要

分组网络上的语音传输质量取决于三个关键参数:丢包、绝对分组延迟和分组延迟变化(抖动)。常见的实际问题是如何估计目标网络中不同数量、不同源特性的语音源的语音质量。话音源的重要特征有:速率(每秒包数)、包长度(取决于压缩类型)、话音源类型(VBR或CBR)和统计描述。在本文中，我们提出了系统测量话音流量参数的方法和实用方法。最后给出了用该方法在实验DiffServ网络上的测量结果。

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Voice traffic performance measurement in packet networks

Quality of voice transportation over packet networks depends on three critical parameters: packet loss, absolute packet delay and packet delay variation (jitter). Common practical problem is how to estimate voice quality for a different number of voice sources with different source characteristics in target networks. Important characteristics of a voice source are: rate (packets per second), packet length (depending on a type of compression), type of source (VBR or CBR) and statistical description. In this paper we propose methodology and practical approach for systematic measurement of voice traffic parameters in respect to varying voice source characteristics. Measurement results that are conducted with presented methodology on an experimental DiffServ network are given, too.

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ITI 2002. Proceedings of the 24th International Conference on Information Technology Interfaces (IEEE Cat. No.02EX534)

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