A COMPARATIVE STUDY OF BURST ADMISSION CONTROL PROTOCOLS IN ATM NETWORKS

Abstract

The Asynchronous Transfer Mode (ATM) is considered as the transport method for Broadband Integrated Services Digital Network (B-ISDN). ATM networks can transmit various types of information- in a flexible way. One particular area in ATM networking which has received considerable attention is the admission control problem. The objective of using admission control schemes is to ensure, a priori, that the traffic intensity will never reach levels at which unacceptable degradation in the Quality Of Service (QOS) occurs. Admission control is mostly studied at the call level and at the burst level. This dissertation deals with the performance comparison of two Burst Admission Control protocols for ATM networks, viz the "Tell-and-Go" and the "Tell-and-Wait". The analysis provides the performance comparisons between the two protocols with respect to the propagation delay, burst size, peak rate and throughput. Also an attempt is made to compare burst admission control with call admission control with respect to throughput and ratio of link rate to sender peak rate.