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Proceedings Paper

Importance of multiple correlation of variable-bit-rate video traffic in ATM traffic engineering
Author(s): Jiaoyang Li; Haifeng Xu; Xiande Liu
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Paper Abstract

Variable bit rate (VBR) video traffic makes crucial impact on ATM network performance, design and management due to its wide bandwidth, high burstiness and strong correlation. Previous studies focus on the bandwidth distribution and autocorrelation of VBR video sources. We investigate the importance of the multiple correlation of VBR video traffic in ATM buffering systems. We choose two models to generate VBR video traffic, one is auto-regressive (AR) model, and the other is discrete auto-regressive (DAR) model. The two models have same bandwidth distribution and auto-correlation but different multiple correlation. Numerical experiments are taken to compare the queuing performance of a finite ATM buffer loaded with AR, DAR sources. Results show (1) cell loss rate (CLR) of those two input sources are very closely when CLR is large; (2) the error between them becomes more evident as CLR decreases; (3) this error becomes non- negligible when CLR less than 10-5 (occurs in ATM practice). Our study shows that the multiple correlation of VBR video traffic take an important impact on queuing performance in realistic network applications, which must be taken account of to model VBR video sources and perform more reliable queuing analysis.

Paper Details

Date Published: 19 August 1998
PDF: 7 pages
Proc. SPIE 3561, Electronic Imaging and Multimedia Systems II, (19 August 1998); doi: 10.1117/12.319729
Show Author Affiliations
Jiaoyang Li, Huazhong Univ. of Science and Technology (China)
Haifeng Xu, Huazhong Univ. of Science and Technology (China)
Xiande Liu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3561:
Electronic Imaging and Multimedia Systems II
LiWei Zhou; Chung-Sheng Li, Editor(s)

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