基于流体流模型的IP语音接入丢失率分析

Loss-rate analysis of multiplexing of VoIP packets based on fluid-flow model

本文使用流体流模型分析了IP语音用户接入的丢失率情形。通过求解由生灭过程得出的常微分方程组 ,给出了有限缓冲队列的概率分布函数 ,进而得出丢失率的精确解。文中将流体流模型以及M/D/1/K模型的计算数据与仿真数据进行了对比 ,结果表明使用流体流模型对于分析接入的丢失率是有效的。

The purpose of this paper is to examine fluid flow model of calculating the loss rate in multiplexing of VoIP packets.Giving the solution of differential equations derived from modeling the multiplexing as a birth death process,we get the cumulative probability distribution of the occupation of limited buffer and further the accurate loss rate.The comparison between the fluid flow model and M/D/1/K shows the feasibility of the fluid flow one.