Quality of Service White Papers
A Quality of Service Architecture
Overview For applications relying on the transfer of multimedia, and in particular continuous media, it is essential that quality of service (QoS) is guaranteed system-wide, including end-systems, communications systems and networks. Although researchers have addressed many isolated areas of QoS provision, little attention has so far been paid to the definition of an integrated and coherent framework that incorporates QoS interfaces, management and mechanisms across all architectural layers. To address this deficiency, we are developing a Quality of Service Architecture (QoS-A), which offers a framework to specify and implement the required performance properties of multimedia applications over high-performance ATM- based networks. The QoS-A incorporates the notions of flow, service contract and flow management. Flows characterize the production, transmission and eventual consumption of single media streams, service contracts are binding agreements between users and providers and flow management provides for the monitoring and maintenance of the contracted QoS levels. This paper provides an overview of the QoS-A and focuses particularly on the role of the transport service and protocol in the architecture. We describe a multimedia enhanced transport service (METS), flow management and transport layer service contract. We show how QoS levels contracted at the transport service interface can be assured in the context of our local ATM environment.
| Publisher | Columbia University Department of Computer Science | File Format | |
|---|---|---|---|
| Date Published | September 2000 | Downloads | 8 |
| Format | White Papers | ||
| Topics | |||
-
Did you find this white paper useful?
White Paper RSSContact Centres: Optimum service at optimum cost
DownloadGetting the balance right between meeting the inbound call expectations of busy customers and optimising telecoms costs is the goal for many ICT managers. Technology now enables far more powerful...
Learn how Performance Metrics for Telcomm Expense Management Drive new ROIs and SLAs
Metrics that force organizations to think about service level agreements and measurements differently Learn how new high performance telecom expense management solutions will increase your ROI. Watch "Learn how Performance...
Dell-Customized Mobility Solutions
The marketplace is overflowing with a multitude of mobility options for businesses of all types and sizes. From notebooks, netbooks, and handheld computers to WiFi, smartphones, and mobile broadband, there...
10 Steps to Control Wireless Costs Through Consumption Management
In the telecom and data communications environment, the challenge is to strike the right balance between understanding corporate usage trends and adopting new technologies that can make the organization more...
Sybase - Taking a Strategic Approach to Enterprise Mobility
Learn how to deploy a mobility solution that allows you to manage, analyze, and deliver data to anyone, anytime. And learn how to select a solution that will boost productivity,...
