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本文对具有线群结构的输入缓冲ＡＴＭ交换网络在双优先级业务下的时延和吞吐率性能进行了分析。借助概率母函数的方法，给出了高低优先级信元在缓冲器中的队长分布，时延分布，平均队长和平均时延以及交换网络最大吞吐率的封闭表达式，并通过计算机仿真验证了分析结果的精确性。由于所采用的分析方法克服了传统的数值叠代计算方法的复杂性，因此，在ＡＴＭ交换网络的工程设计中具有重要的实际意义。
In this paper, we analyze the delay and throughput performance of input buffer ATM switched network with line group structure under dual priority service. By using the method of probabilistic parent function, the captain distribution, delay distribution, average captain and average delay of the high and low priority cells in the buffer are given, and the closed expression of the maximum throughput of the switched network is given. The computer simulation verifies Analyze the accuracy of the results. Due to the complexity of the traditional numerical iterative calculation method, the analytical method adopted has the important practical significance in the engineering design of the ATM exchange network.