Performance of a Priority-Weighted Round Robin Mechanism for Differentiated Service Networks

Author

Zhang, Y. ; Harrison, P.G.

Author_Institution

Imperial Coll. London, London

fYear

2007

fDate

13-16 Aug. 2007

Firstpage

1198

Lastpage

1203

Abstract

Strict priority queueing and weighted round robin are two common scheduling schemes for differentiation of services in telecommunication networks. A combination of these is the priority weighted round robin (PWRR) scheme, which serves three classes of traffic with distinct quality requirements, namely expedited forwarding (EF), assured forwarding (AF) and best effort forwarding (BF). The response time of the AF class is analysed under a worst case scenario and an expression for its mean value is obtained using a queueing model. Numerical results are validated by simulation and implications on service level agreements are discussed.

Keywords

DiffServ networks; queueing theory; telecommunication traffic; assured forwarding class; best effort forwarding class; differentiated service network; expedited forwarding class; priority-weighted round robin mechanism; queueing model; Bandwidth; Computer networks; Delay; Diffserv networks; IP networks; Quality of service; Round robin; Telecommunication computing; Telecommunication traffic; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communications and Networks, 2007. ICCCN 2007. Proceedings of 16th International Conference on

Conference_Location

Honolulu, HI

ISSN

1095-2055

Print_ISBN

978-1-4244-1251-8

Electronic_ISBN

1095-2055

Type

conf

DOI

10.1109/ICCCN.2007.4317983

Filename

4317983