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Proceedings Paper

Multimedia proxy adaptive scheduler driven by perceptual quality for multi-user environment
Author(s): Marco Carli; S. Laureti; Alessandro Neri
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Paper Abstract

Broadband multimedia communications will be a key element in the 3rd generation of wireless services. A primary challenge is the support of interactive services requiring synchronous playout of multimedia content with a maximum acceptable delay in a multi-user scenario. Subjective tests show that the subjects prefer a lower quality reproduction than a “hopping” video: the pause needed to re-buffer severely affects the overall quality. To maximize the number of active users that can be served with a predefined Quality of Service (QoS) level by a packet-oriented radio access, we propose the use of a multimedia proxy. This component may transcode the original video stream to match a predefined quality level based on the quality of each user’s channel.

Paper Details

Date Published: 14 March 2005
PDF: 9 pages
Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); doi: 10.1117/12.596476
Show Author Affiliations
Marco Carli, Univ. degli Studi di Roma Tre (Italy)
S. Laureti, Univ. degli Studi di Roma Tre (Italy)
Alessandro Neri, Univ. degli Studi di Roma Tre (Italy)


Published in SPIE Proceedings Vol. 5685:
Image and Video Communications and Processing 2005
Amir Said; John G. Apostolopoulos, Editor(s)

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