Performance analysis of flow control algorithms in asynchronous transport mode broadband networks

Asynchronous Transport Mode (ATM) Broadband Networks are designed to carry a very diverse mixture of traffic with different burstiness and correlation parameters. In this dissertation, we propose and analyze an access flow control scheme which throttles peak bit rate of the arrival process at the User Network Interface (UNI). It uses a two threshold control levels (K1,K2) to minimize the buffer occupancy level. We, also, propose and analyze a dynamic bandwidth allocation scheme based upon the virtual path principle. The bandwidth is statistically assigned to each virtual path, according to the declared traffic characteristics and required class of service. To dynamically control the allocated bandwidth, a Bandwidth Control Period (BCP) rule is proposed to control the scheduling of different classes of traffic. The multiplexer queueing performance has significantly improved, when the proposed flow control schemes are applied.