Multimedia Network Design Study.

摘要

This document provides a report on the first year of the three-year AIRMICS Multimedia Network Design Study. Briefly, the study goals for the three years of the effort are as follows. In the first year of the study, now completed, the goal was to create a closed-form analytical queuing model for networks of queues. The second year of the study, now beginning, will build on the effort of the first year by enhancing the utility of the network-of-queues model to provide automated optimization capabilities. The third year of the study will attempt to integrate the use of this tool with a quantitative approach to define type mission of a communications system, and evaluating in an exact way the effects of the communication system on mission-oriented (not communications-oriented) metrics. In the first year, a careful literature search was completed to determine the scope and depth of the selected modeling technique and its applicability to large-scale complex communications networks. The general result of this search was that the techniques of closed-form analysis are applicable to certain important areas of network design, and in fact complement, rather than replace, simulation techniques. The issues which can be dealt with by closed-form analysis relate to the proportioning of traffic across the available media in the system.