A rule-based approach for consistent proportional delay differentiation (extended abstract)

Authors:
Jianbin Wei;Cheng-Zhong Xu
Affiliations:
Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan;Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan
Venue:
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
Year:
2005

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Abstract

Proportional delay differentiation (PDD) aims to maintain pre-specified packet queueing-delay ratios between different classes of traffic at each hop. Existing rate-allocation approaches for PDD services assume the average queueing delay of a class is inversely proportional to its service rate. This assumption may not be valid in a non-heavily loaded system. In this paper, we present a rule-based approach to provide consistent PDD services under various load conditions. In this approach, the service rate of a class is adjusted according to a set of control rules. Simulation results demonstrate that, in comparison with other rate-allocation approaches, the rule-based approach is able to provide PDD services under light, moderate, and heavy load conditions consistently.