Continuous media communication with dynamic QOS control using ARTS with an FDDI network
SIGCOMM '92 Conference proceedings on Communications architectures & protocols
Dynamic management of guaranteed-performance multimedia connections
Multimedia Systems
Quality-of-service issues in high-speed networks
Quality-of-service issues in high-speed networks
On specifying services and synthesizing protocols for real-time applications
PSTV '94 Proceedings of the fourteenth of a series of annual meetings on Protocol specification, testing and verification XIV
An architecture for end-to-end quality of service provision and its experimental validation
An architecture for end-to-end quality of service provision and its experimental validation
Enabling technology for distributed multimedia applications
IBM Systems Journal
Workstation Support for Time-Critical Applications
Proceedings of the Second International Workshop on Network and Operating System Support for Digital Audio and Video
A quality of service negotiation procedure for distributed multimedia presentational applications
HPDC '96 Proceedings of the 5th IEEE International Symposium on High Performance Distributed Computing
Architectural Design of Adaptive Distributed Multimedia Systems
MMSD '96 Proceedings of the 1996 International Workshop on Multimedia Software Development (MMSD '96)
Enabling technology for distributed multimedia applications
IBM Systems Journal
A Framework and Lightweight Protocol for Multimedia Network Management
Journal of Network and Systems Management
Multimedia Tools and Applications
A Model for Availability of Quality of Service in Distributed Multimedia Systems
Multimedia Tools and Applications
Tunnel Agents for Enhanced Internet QoS
IEEE Concurrency
Quality of Service Management for Teleteaching Applications Using the MPEG-4/DMIF
IDMS '99 Proceedings of the 6th International Workshop on Interactive Distributed Multimedia Systems and Telecommunication Services
QoS Management Middleware: A Separable, Reusable Solution
IDMS '01 Proceedings of the 8th International Workshop on Interactive Distributed Multimedia Systems
MEQA3 - a multi-end QoS application adaptation architecture
Information processing and technology
A quality of service negotiation procedure for distributed multimedia presentational applications
HPDC '96 Proceedings of the 5th IEEE International Symposium on High Performance Distributed Computing
Coordinated management of hardware and software self-adaptivity
Journal of Systems Architecture: the EUROMICRO Journal
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High-speed networks and powerful end-systems enable new types of applications, such as video-on-demand and teleconferencing. Such applications are very demanding on quality of service (QoS) because of the isochronous nature of the media they are using. To support these applications, QoS guarantees are required. However, even with service guarantees, violations may occur because of resources shortage, e.g., network congestion. In this paper we propose new adaptation approaches, which allow the system to recover automatically, if possible, from QoS violations (1) by identifying a new configuration of system components that might support the initially agreed QoS and by performing a user-transparent transition from the original configuration to the new one, (2) by redistributing the levels of QoS that should be supported, in the future, by the components, or (3) by redistributing the levels of QoS that should be supported immediately to meet end-to-end requirements based on the principle that (local) QoS violation at one component may be recovered immediately by the other components participating in the support of the requested service. The proposed approaches, together with suitable negotiation mechanisms, allow us (1) to reduce the probability of QoS violations which may be noticed by the user, and thus, to increase the user confidence in the service provider, and (2) to improve the utilization of the system resources, and thus to increase the system availability.