Transmission of video streams with constant bandwidth allocation

Sooyong Kang, Heon Y. Yeom

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Encoded video streams present numerous problems in bandwidth allocation, multiplexing and admission control as a result of their Variable Bit Rate (VBR) characteristics. In particular, as video signals show a large range of variability, peak rate allocation results in very low bandwidth utilization. However, other allocation schemes tend to cause cell loss, delay and delay jitter, which make it difficult to guarantee quality of service (QoS). It is therefore necessary to develop a scheme that has no cell loss while guaranteeing QoS and achieving high bandwidth utilization at the same time. In this article, we propose a new scheme to accomplish this, which employs a 2-phase smoothing technique before transmitting VBR signal to produce an on-off signal with fixed bandwidth. Hence, it is possible to allocate a constant bandwidth for each stream, which results in high bandwidth utilization and a guaranteed deterministic QoS.

Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalComputer Communications
Volume22
Issue number2
DOIs
Publication statusPublished - 1999 Jan 25

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Keywords

  • Bandwidth utilization
  • Traffic smoothing
  • Variable bit rate
  • Video-on-demand

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