caa a22 4500 477132820 CHVBK 20180405111708.0 cr unu---uuuuu 170330e19970501xx s 000 0 eng 10.1007/s005300050053 doi (NATIONALLICENCE)springer-10.1007/s005300050053 RED-VBR: a renegotiation-based approach to support delay-sensitive VBR video [Elektronische Daten] [Hui Zhang, Edward W. Knightly] Abstract.: Previous approaches to supporting video on packet-switched networks include deterministic service, statistical service, predicted service, and feedback-based schemes. These schemes represent different tradeoffs in quality of service (QOS), achievable network utilization, and method of dealing with overload. In this paper, we propose a new service called REnegotiated Deterministic Variable Bit Rate Service (RED-VBR) that attempts to strike an efficient balance with the above tradeoffs. The approach is based on deterministic guarantees with client-controlled renegotiation of traffic and QOS parameters and graceful adaptation during overload periods. We introduce a connection admission control algorithm for RED-VBR which bounds the renegotiation failure probability. We evaluate the scheme using two traces of MPEG-compressed video and show that, even with simple renegotiation polices and relatively low renegotiation frequencies, high network utilization in the range of 50-80% can be achieved. For traffic that is bursty over long intervals, this represents a 100-150% improvement in network utilization compared to deterministic service. Compared to statistical and predicted service, our approach allows more graceful and client-controlled QOS degradation during overload periods. Springer-Verlag Berlin Heidelberg, 1997 Zhang Hui School of Computer Science, Carnegie Mellon University, hzhang@cs.cmu.edu, US aut Knightly Edward W. ECE Department, Rice University, knightly@ece.rice.edu, US aut https://doi.org/10.1007/s005300050053 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005300050053 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Hui School of Computer Science, Carnegie Mellon University, hzhang@cs.cmu.edu, US aut NATIONALLICENCE 700 1- Knightly Edward W. ECE Department, Rice University, knightly@ece.rice.edu, US aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer