Performance Analysis of High Speed Data Networks Using Priority Discipline

Copy Right © BIJIT – 2009; July – December, 2009; Vol. 1 No. 2; ISSN 0973 – 5658 141 Performance Analysis of High Speed Data Networks Using Priority Discipline K. Bhatia, A. K. Pal and Anu Chaudhary Abstract Recent advancements in network technology allow integration of different services on the same networking infrastructure. Thus, voice, data and video or multimedia traffic share the same transmission, switching and storage resources over a single network. This integration offers the user a single access facility to all communication services through a unified interface. Since Asynchronous Transmission Mode (ATM) networks support diverse services such as voice, data, video etc., therefore, ATM has been chosen for the use in the Broadband Integrated Service Digital Networks (B-ISDN). In this paper, we have developed a queuing model for the ATM networks in which three types of traffic e.g. voice, data, and video are considered. We analyze a discrete time singleserver (GI/1/1) queuing system with three priority queues of infinite capacity. The waiting time distribution for the packets in each class is derived explicitly. We have also derived expressions for probability generating function of the system contents along with the packet delay of these classes considered in the study.