NDLI: Real-time multimedia streams in a differentiated services network

Content Provider	IEEE Xplore Digital Library
Author	Fidler, M.
Copyright Year	2001
Description	Author affiliation: Dept. of Comput. Science, Informatik IV, Aachen Univ. of Technol., Germany (Fidler, M.)
Abstract	Multimedia applications are becoming increasingly popular on the Internet. These include semi real-time applications like video playback, but also interactive applications with hard real-time requirements like Internet telephony or videoconferencing. Common to the real-time applications is an inevitable requirement for transmission services with certain guaranteed qualities. The differentiated services architecture aims at providing these services. A prioritized transmission, which is necessary in the case of real-time data, can be achieved by applying the expedited forwarding, defined as a premium service. Nevertheless, especially if current hierarchical video encoding techniques are used, great benefits can be gained by extending the expedited forwarding by different levels of forwarding guarantees. Doing so allows finely tuned reactions to congestion in the network, based on the importance of the individual data packets, which is given by the hierarchy of the video encoding layers. In this paper we present a queue management and scheduling model, which is the basis for a new differentiated services per hop behavior group. The per hop behavior group extends the expedited forwarding by certain forwarding guarantees, as already applied by the assured forwarding per hop behavior group. We show simulation results, which prove the usefulness of this extension, especially for the transmission of hierarchically encoded video streams.
Sponsorship	Army Res. Lab.
Starting Page	380
Ending Page	385
File Size	103661
Page Count	6
File Format	PDF
ISBN	0780371283
ISSN	10952055
DOI	10.1109/ICCCN.2001.956294
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Streaming media Intelligent networks Diffserv networks Encoding Application software Web and internet services Transport protocols Bandwidth Traffic control Computer science
Content Type	Text
Resource Type	Article

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