The Importance of Long-Range Dependence of VBR Video Traffic in ATM Traffic Engineering: Myths and Realities (1996)
| Venue: | IN PROC. ACM SIGCOMM '96 |
| Citations: | 113 - 7 self |
BibTeX
@INPROCEEDINGS{Ryu96theimportance,
author = {Bong K. Ryu and Anwar Elwalid},
title = {The Importance of Long-Range Dependence of VBR Video Traffic in ATM Traffic Engineering: Myths and Realities},
booktitle = {IN PROC. ACM SIGCOMM '96},
year = {1996},
pages = {3--14},
publisher = {}
}
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Abstract
There has been a growing concern about the potential impact of long-term correlations (second-order statistic) in variable-bit-rate (VBR) video traffic on ATM buffer dimensioning. Previous studies have shown that video traffic exhibits long-range dependence (LRD) (Hurst parameter large than 0.5). We investigate the practical implications of LRD in the context of realistic ATM traffic engineering by studying ATM multiplexers of VBR video sources over a range of desirable cell loss rates and buffer sizes (maximum delays). Using results based on large deviations theory, we introduce the notion of Critical Time Scale (CTS). For a given buffer size, link capacity, and the marginal distribution of frame size, the CTS of a VBR video source is defined as the number of frame correlations that contribute to the cell loss rate. In other words, second-order behavior at the time scale beyond the CTS does not significantly affect the network performance. We show that whether the video source model i...
