综合业务网络中窄带呼叫对宽带呼叫阻塞概率的分析

通过计算机仿真发现,在ATM网络中如果只是简单地使用人们已提出的各种呼叫接纳控制(CAC)算法,则在网络流量接近满负荷时,会出现呼叫排挤现象,即窄带业务呼叫阻塞宽带业务呼叫接入网络的现象。本文提出了一种简单的呼叫接入平衡机制,并分析了在此机制下当流量接近满负荷时各类业务呼叫接入网络的概率以及窄带业务呼叫阻塞宽带业务呼叫接入网络的概率。

Analysis of Narrow Band Calls Blocking the Wide Band Calls in Multi-services Networks

By computer simulation we found a phenomenon of "calls squeezing out" in ATM networks under the traffic approaching to the system capacity when using simply the CAC algorithms proposed in the past, i.e. the narrow band services calls blocking the wide band services calls into networks. We studied and proposed a simple calls access balancing machinery, and analyzed the access probabilities of various kinds of calls and the probabilities of the narrow band services calls blocking the wide band services calls into networks under the machinery.