Improving performance of router-assisted transport protocols over variable capacity links

Ihsan Ayyub Qazi, Taieb Znati, Daniel Mosse

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many promising congestion control protocols use explicit feedback from the network to achieve high performance. These protocols often use congestion signals whose computation requires an estimate of link capacity. Such estimates are not available in networks where capacity varies over time. This paper studies the impact of inaccurate capacity estimates on the performance of congestion control protocols over variable capacity links. As a case study, we focus on 802.11 WLANs. We show that such estimates can lead to either under-utilization or unfairness and network overload. Using a model, we characterize the available capacity of a node in a 802.11 WLAN and then study a method for capacity estimation. Using simulations, we show that the method leads to high utilization and fairness over shared, multi-access networks.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Communications, ICC 2012
Pages1271-1275
Number of pages5
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: Jun 10 2012Jun 15 2012

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607

Other

Other2012 IEEE International Conference on Communications, ICC 2012
Country/TerritoryCanada
CityOttawa, ON
Period6/10/126/15/12

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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