Degree Name

Doctor of Philosophy


School of Electrical, Computer and Telecommunications Engineering


The future Broadband Integrated Services Digital Network (BISDN) promises a versatile high speed communications capability. This network will need to support a wide range services with differing traffic characteristics and performance requirements. These services range from existing services to new services utilising the broadband aspects of the BISDN. Asynchronous Transfer Mode (ATM) is a suitable transmission, multiplexing and switching technology for the BISDN. This technology introduces a number of capabilities not available in current communications networks including the ability to support connections at different bit rates and statistically multiplex connections with varying bit rates. This thesis is concerned with the development of a methodology for examining the design of an ATM based BISDN utilising the Virtual Service Network concept. The Virtual Service Network concept is a traffic management technique that segregates the network into separate logical networks to simplify the control problem allowing improved management of resources. An essential initial step in examining the design of an ATM network using Virtual Service Networks is the ability to optimise the network for any given scenario. This enables different design techniques to be examined and compared. As there are no appropriate methodologies currently available for optimising Virtual Service Networks the contribution of this thesis is the development of a methodology for optimising an ATM network utilising Virtual Services Networks.



Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.