Proportional delay differentiation provision by bandwidth adaptation of class-based queue scheduling

Michalas, A; Louta, M; Fafali, P; Karetsos, G; Loumos, V

dc.contributor.author	Michalas, A	en
dc.contributor.author	Louta, M	en
dc.contributor.author	Fafali, P	en
dc.contributor.author	Karetsos, G	en
dc.contributor.author	Loumos, V	en
dc.date.accessioned	2014-03-01T01:21:16Z
dc.date.available	2014-03-01T01:21:16Z
dc.date.issued	2004	en
dc.identifier.issn	1074-5351	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16170
dc.subject	Class-based queueing	en
dc.subject	Differentiated services	en
dc.subject	Proportional relative differentiation	en
dc.subject	Quality of service	en
dc.subject	Scheduling	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Class-based queueing	en
dc.subject.other	Differentiated services	en
dc.subject.other	Proportional relative differentiation	en
dc.subject.other	Quality services	en
dc.subject.other	Adaptive control systems	en
dc.subject.other	Bandwidth	en
dc.subject.other	Computer simulation	en
dc.subject.other	Integrated circuits	en
dc.subject.other	Internet	en
dc.subject.other	Network protocols	en
dc.subject.other	Packet networks	en
dc.subject.other	Quality of service	en
dc.subject.other	Scheduling	en
dc.subject.other	Telecommunication services	en
dc.subject.other	Telecommunication traffic	en
dc.subject.other	Queueing networks	en
dc.title	Proportional delay differentiation provision by bandwidth adaptation of class-based queue scheduling	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/dac.675	en
heal.identifier.secondary	http://dx.doi.org/10.1002/dac.675	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	Supporting quality of service (QoS) over the Internet is a very important issue and many mechanisms have already been devised or are under way towards achieving this goal. One of the most important approaches is the so-called Differentiated Services (DiffServ) architecture, which provides a scalable mechanism for QoS support in a TCP/IP network. The main concept underlying DiffServ is the aggregation of traffic flows at an ingress (or egress) point of a network and the marking of the IP packets of each traffic flow according to several classification criteria. Diffserv is classified under two taxonomies: the absolute and the relative. In absolute DiffServ architecture, an admission control scheme is utilized to provide QoS as absolute bounds of specific QoS parameters. The relative DiffServ model offers also QoS guarantees per class but in reference to the guarantees given to the other classes defined. In this paper, relative proportional delay differentiation is achieved based on class-based queueing (CBQ) scheduler. Specifically, the service rates allocated to the classes of a CBQ scheduler are frequently adjusted in order to obtain relative delay spacing among them. The model presented can also be exploited in order to meet absolute delay constraints in conj. unction With relative delay differentiation provision. Simulation experiments verify that our model can attain relative as well as absolute delay differentiation provided that the preconditions posed are satisfied. Copyright (C) 2004 John Wiley Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	International Journal of Communication Systems	en
dc.identifier.doi	10.1002/dac.675	en
dc.identifier.isi	ISI:000223833200005	en
dc.identifier.volume	17	en
dc.identifier.issue	7	en
dc.identifier.spage	743	en
dc.identifier.epage	761	en