Multiplexing and resource allocation of VBR MPEG video traffic on ATM networks

Mata, Jorge García; Pagan, G.; Sallent, S.

doi:10.1109/icc.1996.533639

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…However, even after smoothing, part of the burstiness remains. As the efficient transmission of video data depends on the statistical multiplexing gain [10][11], server overload cannot be eliminated and one has to resort to statistical rather than deterministic performance guarantee. Last but not least, we observe that real-world VBR-encoded videos have vastly different longrange bit-rate variations, rendering the statistical multiplexing gain to be highly dependent on the video mix.…”

Section: Decreasing Rate Schedulingmentioning

confidence: 99%

VBR video delivery using monotonic-decreasing rate scheduling

Lai

Chen²,

Lee³

ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196)

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Variable-bit-rate (VBR) encoding is known to provide a more consistent visual quality compared to constant-bit-rate (CBR) encoding. However, the resultant bit-rate variations greatly complicated the allocation of disk and network bandwidth in a video-on-demand system. This paper investigates a new scheduling algorithm with monotonic-decreasing rate allocations for scheduling disk retrievals and data transmissions. This scheduler enables the use of a very computationally-efficient admission-control algorithm that can provide deterministic performance guarantee. Simulation results based on a large number of VBR video traces (307 DVD videos) show that the proposed scheduler can achieve over 84% disk efficiency despite long-range bit-rate variations within individual videos.

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Section: Decreasing Rate Schedulingmentioning

confidence: 99%

VBR video delivery using monotonic-decreasing rate scheduling

Lai

Chen²,

Lee³

ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196)

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Doumenis

Konstantoulakis

Korinthios

et al. 2001

The Journal of VLSI Signal Processing

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Efficient modeling of VBR MPEG-1 coded video sources

Doulamis

Konstantoulakis

et al. 2000

IEEE Trans. Circuits Syst. Video Technol.

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Performance evaluation of broadband networks requires statistical analysis and modeling of the actual network traffic. Since multimedia services, and especially variable bit rate (VBR) MPEG-coded video streams are expected to be a major traffic component carried by these networks, modeling of such services and accurate estimation of network resources are crucial for proper network design and congestion-control mechanisms that can guarantee the negotiated quality of service at a minimum cost. The layer modeling of MPEG-1 coded video streams and statistical analysis of their traffic characteristics at each layer is proposed in this paper, along with traffic models capable of estimating the network resources over asynchronous transfer mode (ATM) links. First, based on the properties of the entire MPEG-1 sequence (frame layer signal), a model (Model A) is presented by correlating three stochastic processes in discrete time (autoregressive models), each of which corresponds to the three types of frames of the MPEG encoder (, and frames). To simplify the traffic Model A and to reduce the required number of parameters, we study the MPEG stream at a higher layer by considering a signal, which expresses the average properties of , and frames over a group of picture (GOP) period. However, models on this layer cannot accurately estimate the network resources, especially in multiplexing schemes. For this reason, an intermediate layer is introduced, which exploits and efficiently combines information of both the aforementioned layers, producing a model (Model B), which requires much smaller number of parameters than Model A and simultaneously provides satisfactory results as far as the network resources are concerned. Evaluation of the validity of the proposed models is performed through experimental studies and computer simulations, using several long duration VBR MPEG-1 coded sequences, different from that used in modeling. The results indicate that both Models A and B are good estimators of video traffic behavior over ATM links at a wide range of utilization. Index Terms-Asynchronous transfer mode (ATM), MPEG-1 coded video traffic and flow control, statistical multiplexing, variable bit rate (VBR) coding. I. INTRODUCTION A MAJOR traffic component over broadband integrated networks (B-ISDN) based on asynchronous transfer mode (ATM) is anticipated to be multimedia services [1]-[3]. The demand of such services, like video teleconferencing [4], high-definition television (HDTV) [5], indexing and browsing of large video databases [6], [7] as well as the forthcoming video on demand (VOD) [8] will rapidly increase in the coming years. However, all the above applications impose very large Manuscript

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Multiplexing and resource allocation of VBR MPEG video traffic on ATM networks

Cited by 6 publications

References 13 publications

VBR video delivery using monotonic-decreasing rate scheduling

VBR video delivery using monotonic-decreasing rate scheduling

Untitled

Efficient modeling of VBR MPEG-1 coded video sources

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