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Computationally efficient E-model improvement of MOS estimate including jitter and buffer losses

机译:MOS估算的计算有效E模型改进,包括抖动和缓冲器损耗

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摘要

In the article we propose a method of improving ITU-T E-model MOS estimate of VoIP call quality. The improvement consists of including the effects of network jitter as measured and distributed in RTCP packets; jitter buffer size at receiver and codec packetization settings as input parameters of E-Model. Our method uses Pareto/D/1/k system for modeling general VoIP input traffic stream interarrival times and jitter buffer behavior resulting in additional packet loss. Consequently we propose the inclusion of jitter buffer size, codec packetization and network jitter into E-Model by means of substitution of existing Ppl (packet loss) parameter for Pplef (effective packet loss) in computationally effective manner suitable for real-time MOS estimate without the need of capturing large packet traces from the network and performing estimation of Hurst parameter or using other means of traffic statistics description in advance.
机译:在本文中,我们提出了一种改进VoIP呼叫质量的ITU-T E模型MOS估计的方法。改进包括在RTCP数据包中测量和分布网络抖动的影响;接收器的抖动缓冲区大小和编解码器打包设置作为E模型的输入参数。我们的方法使用Pareto / D / 1 / k系统对通用VoIP输入业务流的到达时间和抖动缓冲区行为进行建模,从而导致额外的数据包丢失。因此,我们建议通过以适合实时MOS估计的计算有效方式将现有的Ppl(数据包丢失)参数替换为Pplef(有效数据包丢失),将抖动缓冲区大小,编解码器打包和网络抖动纳入E模型。需要从网络捕获大的数据包跟踪,并进行Hurst参数估计,或者需要预先使用其他流量统计描述方法。

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