Network Performance Modeling, Design and Dimensioning Methodologies

摘要

Providing accurate estimates of performance in large heterogeneous internet works, for the purposes of network design and planning and for service provisioning has became a critical problem. This is due to the heterogeneity of the physical medium, the size of current and future networks and the different quality of service requirements for multimedia services. In this thesis we describe our work on the development of connection level mathematical models used for estimating network performance characteristics such as throughput, delay and blocking probability. The type of models we use and investigate are of the 'Loss Network' type, which have been used widely in legacy telephone networks and in cellular networks for estimating 'availability'. These network models can also be used in estimating performance in general packet-switched networks using effective bandwidth concepts.