Research note: Performance analysis of the constant-bit-rate services in an ATM DQDB MAN

Authors:
Sun Hairong;Huang Ke;Li Lemin
Affiliations:
National Key Laboratory of Optical Fiber Communications, University of Electronic Science & Technology of China, Chengdu 610054, People's Republic of China;National Key Laboratory of Optical Fiber Communications, University of Electronic Science & Technology of China, Chengdu 610054, People's Republic of China;National Key Laboratory of Optical Fiber Communications, University of Electronic Science & Technology of China, Chengdu 610054, People's Republic of China
Venue:
Computer Communications
Year:
1998

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Abstract

An ATM DQDB MAN can provide integrated services with a pure ATM method which transfers any kind of services in a unified manner. This paper analyzes the performance of the CBR (constant bit rate) services in the ATM DQDB MAN. A four-dimensional Markov chain is used to describe the steady state of a tagged user and the survivor function of the queue length distribution is calculated to design buffer capacity of the tagged user. The analytical method and the results are applied to the prototype we have accomplished. The sojourn time of the CBR services is investigated. The results illustrate that the delay performance of the CBR services is satisfactory in the ATM DQDB MAN if the network is not overloaded seriously. Various priority mechanisms to support integrated services are also compared briefly in the paper.