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Rate-adaptive video streaming through packet dispersion feedback

Jammeh, EA and Fleury, M and Ghanbari, M (2009) 'Rate-adaptive video streaming through packet dispersion feedback.' IET Communications, 3 (1). creators - Ghanbari=3AMohammed=3A=3A. ISSN 1751-8628

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Abstract

The anticipated growth of IPTV makes selection of suitable congestion controllers for video-stream traffic of vital concern. Measurements of packet dispersion at the receiver provide a graded way of estimating congestion, which is particularly suited to video as it does not rely on packet loss. A closed-loop congestion controller, which dynamically adapts the bitstream output of a transcoder or video encoder to a rate less likely to lead to packet loss, is presented. The video congestion controller is based on fuzzy logic with packet dispersion and its rate of change forming the inputs. Compared with TCP emulators such as TCP-friendly rate control (TFRC) and rate adaptation protocol (RAP), which rely on packet loss for real-time congestion control, the fuzzy-logic trained system's sending rate is significantly smoother when multiple video-bearing sources share a tight link. Using a packet dispersion method similarly results in a fairer allocation of bandwidth than TFRC and RAP. These gains for video traffic are primarily because of better estimation of network congestion through packet dispersion but also result from accurate interpretation by the fuzzy-logic controller.

Item Type: Article
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Depositing User: Jim Jamieson
Date Deposited: 13 May 2013 19:19
Last Modified: 07 Jul 2018 08:15
URI: http://repository.essex.ac.uk/id/eprint/6000

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