Traffic Modeling of Variable Bit Rate MPEG Video and Its Impacts on ATM Networks

Zusammenfassung

Modeling is finding a representation of reality in a scale we can handle. Modern telecommunication systems are among the most complex technical contributions to our reality. Thus, tremendous amounts of modeling work was carried out and still has to be carried out for the development of the most recent telecommunications technology, the Asynchronous Transfer Mode (ATM). Most of the publications about modeling, however, are primarily concerned with the modeling of the technical system itself since the objective of research was to make it work. Currently, the viewpoint is changing from the pure technical system towards the services that are to be provided by this system and the kinds of traffic that will be carried by these services. In the early stages of ATM research and development, simple traffic models were adequate since the ideas about the traffic were rather vague. For instance, nobody thought about internet or multimedia traffic. Now, as user needs become visible, there is a demand for more accurate traffic modeling. It has to be evaluated under which conditions an ATM-based network is able to carry this traffic while meeting the user’s quality requirements.