Abstract
This research develops resource management schemes for supporting guaranteed communication services in ATM broadband networks. Since a broadband network has a high bandwidth-delay product, preventive resource managem ent schemes have to be designed to ensure th e probability of network congestion being held below a certain value. Despite preventive schemes, network congestion may still occur due to aggregated and focussed loads. Hence, an adaptive m angem ent scheme should be designed as a compliment to preventive schemes. Admission control is used as a preventive scheme which decides w hether or not to accept a connection upon its request. A m ajor undertaking in the design of such a scheme is the com putational complexity, and an admission control scheme has to make a trade-off between its time-complexity and accuracy. In the Average Renewal Cycle model, the average behavior of the traffic stream in its renewal cycle is formulated, based on which an upper bound on the cell loss probability is obtained. The Resource Decomposition model utilizes the performance model of each individual source in isolation to infer its behavior in a multiplexed traffic stream. The proposed approaches have an advantage over the existing ones in th at they have higher accuracy but almost equal processing overhead. Moreover, the second model can be applied to different cell discarding schemes, which cannot be done in any of the existing approaches. To protect th e transmission quality of information sources in the face of link overload, we propose and evaluate a burst-level adaptive resource m anagem ent scheme. Our scheme reacts to overload situations in an output port by reallocating the resources of the port among th e active sources. Since the network congestion is mainly caused by burst-level traffic fluctuations, the proposed scheme is shown to be effective in protecting the service quality of information sources. The ATM network is developed to support a large variety of application systems. The interplay between the ATM network and these systems is critical for their development. As a case study, m edia synchronization schemes in a distributed m ultimedia systems are examined. We quantify and analyze the correlation between the synchronization quality and the ATM network to provide an insight into the the interplay between th e ATM network and the distributed multimedia system.
Hao, Ying (1994). Resource management in high-speed asynchronous transfer mode (ATM) networks. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -1554377.