Graceful Adaptation of Guaranteed Performance Service Connections

TitleGraceful Adaptation of Guaranteed Performance Service Connections
Publication TypeTechnical Report
Year of Publication1993
AuthorsParris, C. J., Ventre G., & Zhang H.
Other Numbers799

Most of the solutions proposed to support real-time communication services in a packet-switching network adopt a connection-oriented and reservation-oriented approach. In this approach, the resource allocation and route selection decisions are made before the start of the application on the basis of resource availability and real-time network load at that time, and are usually kept for the duration of the application. However, such an approach shows two major limitations: first, the communication service provided is usually fixed, with no or limited capability of adaptation to dynamic changes in the clients' requirements; second, a low utilization of the network may be observed. In this paper, we present a flexible management scheme that allows graceful adaptation of guaranteed performance service connections. Mechanisms have been devised to allow changing of the traffic and performance parameters of a real-time communication during its lifetime. These mechanisms, together with an adaption policy, can make more efficient use of the network resources by performing cooperative, consenting, high-level multiplexing. We distinguish between two types of adaptation: client initiated adaptation and network initiated adaptation. We give examples for both types and we also present results from simulation experiments to verify the correctness our proposal.

Bibliographic Notes

ICSI Technical Report TR-93-011

Abbreviated Authors

C. Parris, G. Ventre, and H. Zhang

ICSI Publication Type

Technical Report