Access delay analysis of a distributed queue based ATM distributor-concentrator network

A distributed queue based ATM distributor-concentrator network may be used to provide a distributed cell multiplexing-demultiplexing function at a broadband user network interface (UNI). The distributor-concentrator network incorporates an asymmetric dual bus architecture and is based on the extended distributed queueing protocol. We analyse the access delay performance of extended distributed queueing in multiplexing the cell streams from delay-sensitive services. In the analysis, we use an N·D/D/1 queue model in which the positional priority of requests issued by nodes along the distributor-concentrator changes dynamically. A discussion on the observed performance is also presented