Zhu, Wenyu; Dreibholz, Thomas; Rathgeb, Erwin P.; Zhou, Xing:

A scalable QoS device for broadband access to multimedia services

In: International journal of multimedia and ubiquitous engineering : IJMUE, Jg. 4 (2009) ; Nr. 2, S. 157-172
ISSN: 1975-0080
Zeitschriftenaufsatz / Fach: Informatik
Zentrale wissenschaftliche Einrichtungen » Institut für Experimentelle Mathematik (IEM) Essen
Nowadays, an increasing number of users get high-speed broadband access to the Internet.
These broadband connections make new multimedia applications possible. However, such
applications also introduce new Quality of Service (QoS) requirements to the network.
Particularly, they require an assured bandwidth even in the case of network overload. The
network itself has to provide such bandwidth assurances.
This article introduces our concept of a novel network QoS device being located in
network edge nodes. It provides a solution for relaxed QoS guarantees to certain flows on a
congested link by focussing packet discard on selected flows. However, unlike for IntServ
solutions like RSVP, our approach only requires minimal signalling and therefore provides
both efficiency and scalability. We furthermore provide a quantitative performance
evaluation of our QoS device by using simulations.

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