traffic cell
6.According to this model, We propose an approximate mathematical analytic method of integrating three kinds of traffic (data、voice and video) to research the effects of traffic of multimedia management subnet on time?delay performance of Shanghai Railway Station ATM backbone network and derives the formulas for cell mean queueing delay.
7.The contributions include: On cell scheduling: based on IP packet length statistic data sampled from more than 10 sites, the efficiency analysis of IP packets Segmentation and Reassembly (SAR) technology in cell scheduling, the concept of optimal SAR cell, the Adaptive Segmentation and Reassembly (ASAR) solution adapting IP traffic, and the Mergence and Separation plus Segmentation and Reassembly (MAS+) solution are present.
8.The cell loss probability of buffered leaky bucket policing(BLP)is analysed by intro-ducing the concept of virtual queue under the condition of ATM bursty traffic. Then,thesmoothing function of the BLP is simulated. The results show that the BLP is a methodsuitable for bursty traffic control in ATM networks.
10.In this paper,we study the performance of input-buffered ATM switching with window-access scheme and output-grouping architecture.The close-form formulae of maximum switch throughput,mean cell delay and cell loss probability are obtained by probability generating function approach.The accuracy of theoretical analysis is verified by computer simulations and results show that the maximum switching throughput will reach 99%under random uniform traffic when the window size and the group size are 4 and 16 respectively.

