Interdeparture time analysis of CBR traffic in AAL multiplexer with bursty background traffic

Abstract

The authors present a discrete time model of a queue to represent an AAL multiplexer with two types of traffic and to analyse cell delay variation of constant bit rate (CBR) traffic in ATM networks. It is assumed that a single periodically deterministic CBR traffic stream and several variable size bursty background traffic streams are multiplexed in the AAL multiplexer and one ATM cell payload stream goes out. The AAL multiplexer is modelled as a BX + D/D/1 queue with all infinite buffer and the departure process of CBR cell payloads is analysed by using the queueing model with the superposed input traffic of CBR and bursty background streams. Both the packet and cell delay time distributons of the CBR traffic and the interdeparture time distribution of the CBR cells are obtained. The authors also give some numerical results for the performance measures.