Jitter and bandwidth enforcement

IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record Pub Date : 1991-12-02 DOI:10.1109/GLOCOM.1991.188395

F. Guillemin, J. Roberts

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引用次数: 45

Abstract

Cells arriving at an ATM (asynchronous transfer mode) network experience random delays due to queuing in upstream multiplexing stages. The alteration of the initial periodic nature of a constant bit rate cell stream due to such delays is the phenomenon of jitter. An assumption of Markovian dependence between the delays of successive cells makes it possible to calculate various quantities of interest for characterizing the jitter. This assumption is appropriate for two ATM multiplex models, and it was possible to investigate the effects of different source and multiplex parameters on the degree of jitter introduced. Jumping window and leaky bucket mechanisms have been dimensioned to enforce the peak rate of jittered streams. The leaky bucket is seen to be considerably more responsive than the jumping window. A synthetic characterization of jitter consists in the remote delay quantile divided by the period of the considered stream. This is sufficient to dimension the leaky bucket for one of the considered multiplex models and supports the heuristic approach of G. Niestegge (1990).<>

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抖动和带宽强制

到达ATM(异步传输模式)网络的单元由于在上游多路复用阶段排队而经历随机延迟。由于这种延迟，恒定比特率单元流的初始周期性质发生了改变，这就是抖动现象。连续单元的延迟之间的马尔可夫依赖性假设使得计算各种感兴趣的量来表征抖动成为可能。这种假设适用于两个ATM复用模型，并且可以研究不同的源和复用参数对引入的抖动程度的影响。跳跃窗口和漏桶机制已被量变以加强抖动流的峰值速率。漏水的桶比跳跃的窗口反应灵敏得多。抖动的综合表征包括远程延迟分位数除以所考虑的流的周期。这足以为考虑的多路模型之一确定漏桶的尺寸，并支持G. Niestegge(1990)的启发式方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record

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