摘要
改进的输入缓冲方案是在 ATM交换单元的输入队列和仲裁逻辑之间加入一个准随机存储器 .这个准随机存储器的作用是在保证去往同一出线的信元次序不变的条件下 ,信元可以随机争取出线 .作者计算了该方案的最大吞吐率、队列长度、信元丢失率、平均时延 ,并与三种典型的缓冲方案进行了比较 。
The improved model of input buffer presented is to insert a quasi random memory between input queue and arbitration logic at ATM switching unit. The cells in quasi random memories can randomly complete and be transmit, provided that the sequence of these cells going to same output route in same quasi random memory is not changed. The maximum throughput, the queue size, the cell lost probability and the mean time delay of the improved model is calculated. By comparisons between the improved model and three kinds of typical model, the advantages of the improved model is discussed.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
2000年第3期215-221,共7页
Journal of Shanghai University:Natural Science Edition
基金
上海市科委重点基础研究项目资助
关键词
输入缓冲
准随机存储器
ATM交换单元
B-ISDN
input buffer
quasi random memory
arbitration logic
throughput
queue size
cell lost probability
mean time delay
