【摘要】 源流量点和ＵＰＣ控制点间的信元延迟变化（ＣＤＶ）对ＡＴＭ网络的资源分配、ＣＡＣ和ＵＰＣ控制都有着重要的影响．在文献基础上，进一步讨论了基于信元接口的ＡＴＭ网络物理层（ＰＬ）信元插入的情况，研究了信元时隙映射和ＰＬ信元插入联合作用下的ＣＤＶ，提出了不同序列不同信元的ＣＤＶ计算公式，并确定了ＣＤＶ容限．示例表明：公式计算与定义结果是一致的．更多还原

【Abstract】 The cell delay variation (CDV) between the source traffic point and UPC control point has a significant impact on the resource allocation, CAC and UPC control in an ATM network. On the bsasis of the work in Ref., the case of physical layer (PL) cell insertion in an ATM network with a cellbased interface is discussed and the CDV under the joint effect of cell slot mapping and PL cell insertion is investigated. The computing formulae for CDV with different arrays and different cells are proposed and the CDV tolerance is determined. The example shows that the results of calculation by the formulae proposed are in agreement with those by definition.更多还原