Quality of Service: Where are We?
Key: SW97-2
Author: Ralf Steinmetz, Lars C. Wolf
Date: May 1997
Kind: In proceedings
Book title: Proceedings of the IFIP Fifth International Workshop on Quality of Service (IWQoS`97), New York, NY, USA
Abstract: Over the last years, Quality of Service (QoS) has evolved as a research field to sup-port new application types in general, very often in networked, co mputer systems. The most prominent of these applications are distributed multimedia app licationswhich transmit and process audiovisual information streams. Due to thei r real-time nature, any correct processing and transport of these data must take timing aspectsinto account. The goal of QoS mechanisms is to ensure that the ov erall presentation of audiovisual data to the user respects these properties in an end-to-end mode.In this paper we give an overview about the terms, issues and trends in the provisioning of QoS whereby we concentrate on principles and arch itectural aspects. Webriefly describe the fundamental steps followed by systems offering QoS and review the IntServ work evolving in the Internet as an example for a prominent QoS model.Furthermore, past, actual, and future issues are discu ssed which we consider to be important for QoS architectures.

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