Authors:
Gianmarco Panza
1
;
Valentin Besoiu
1
;
Catherine Lamy-Bergot
2
;
Filippo Sidoti
3
and
Roberto Bertoldi
3
Affiliations:
1
CEFRIEL Network Systems Unit, Italy
;
2
THALES Communications, France
;
3
WIND Telecomunicazioni S.p.A., Italy
Keyword(s):
DiffServ, proportional services, QoS, weight updating, WFQ.
Related
Ontology
Subjects/Areas/Topics:
Distributed Multimedia Systems
;
Error Control and Concealment
;
Internet Qos for Multimedia Applications
;
Joint Source/Channel Coding
;
Mobile Multimedia (GSM, GPRS, RF, Wi-Fi,…)
;
MPEG Standards and Related Issues
;
Multimedia
;
Multimedia and Communications
;
Multimedia Signal Processing
;
Multimedia Streaming (Ipv4 / Ipv6)
;
Multimedia Systems and Applications
;
Telecommunications
;
Traffic Modeling for Multimedia
;
Universal Multimedia Adaptation
Abstract:
This work aims to analyze different weight updating methods for a dynamic Weighted Fair Queuing (WFQ) scheduler providing Quality of Service (QoS) guarantees for the applications of the IST PHOENIX project and for new value-added services in general. Two weight updating methods are investigated in terms of granted delays to concerned service classes and buffer utilization of the related queues at a given IP interface. In particular, a novel weight updating based on the Knightly’s theory is proposed. Simulation results have demonstrated that a dynamic WFQ based on either of the weight updating methods can well support a proportional relative model of QoS in a Diff-Serv architecture in an IP-based Next Generation Network. The designed system is extremely simple and effective, and with low computational overhead by employing an innovative technique to evaluate the trend of the entering traffic aggregates, in order to trigger a scheduler’s weights updating only when needed.