Fairness of traffic controls for inelastic flows in the Internet
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AbstractIn best-effort networks, fairness has been used as a criterion to guide the design of traffic controls. The notion of fairness has evolved over time, from simple equality to a form of equality modulated by the user's need (e.g. max-min and proportional fairness). However, fairness has always been defined on a per-user basis for a deterministic workload. In this paper, we argue that we must redefine the notion of fairness when we study traffic controls for the co-existence of elastic and inelastic traffics. Our results indicate that subjecting inelastic flows to fairness congestion control on a per-flow basis does not necessarily maximize the network's utility. Instead, inelastic flows may follow their own form of traffic control, such as admission control (without congestion control). At the aggregate level, our results indicate that it still makes sense to maintain a balance between elastic and inelastic traffic. In order to support our arguments, we develop a methodology for comparing different traffic controls for given utility functions and different workloads, both deterministic and stochastic. (c) 2007 Elsevier B.V. All rights reserved.
All Author(s) ListChui DM, Tam ASW
Journal nameComputer Networks
Year2007
Month8
Day8
Volume Number51
Issue Number11
PublisherELSEVIER SCIENCE BV
Pages2938 - 2957
ISSN1389-1286
eISSN1872-7069
LanguagesEnglish-United Kingdom
Keywordsadmission control; congestion control; fairness; non-convex utility function; stochastic traffic model; utility maximization
Web of Science Subject CategoriesComputer Science; Computer Science, Hardware & Architecture; COMPUTER SCIENCE, HARDWARE & ARCHITECTURE; Computer Science, Information Systems; COMPUTER SCIENCE, INFORMATION SYSTEMS; Engineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC; Telecommunications; TELECOMMUNICATIONS

Last updated on 2020-31-07 at 01:30