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本文采用流体流近似法分析了采用数字语音插空(DSI)技术的电路/分组混合交换系统的性能。这种方法基于话音业务和数据业务的不同统计特点,可以近似求得系统中数据排队的概率分布函数。本文还引入了描述话音过程的二维马氏链模型,这个模型可以用于一般的采用话音插空技术的系统性能分析。
In this paper, the fluid-flow approximation method is used to analyze the performance of the circuit / packet hybrid switching system using digital speech gap insertion (DSI). Based on the different statistical characteristics of voice service and data service, this method can approximate the probability distribution function of data queuing in the system. This paper also introduces a two-dimensional Markov chain model describing the speech process, which can be used for the general system performance analysis using voice insertion technology.