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Conference Paper: Enhancing AQM to combat wireless losses
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TitleEnhancing AQM to combat wireless losses
 
AuthorsLai, C1
Leung, KC1
Li, VOK1
 
KeywordsActive queue management algorithms
Backoffs
Integral controllers
Internal model principle
Network scenario
 
Issue Date2012
 
PublisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000600
 
CitationThe 20th International Workshop on Quality of Service (IEEE/ACM IWQoS 2012), Coimbra, Portugal, 4-5 June 2012. In International Workshop on Quality of Service, 2012, p. 1-9 [How to Cite?]
DOI: http://dx.doi.org/10.1109/IWQoS.2012.6245989
 
AbstractIn order to maintain a small, stable backlog at the router buffer, active queue management (AQM) algorithms drop packets probabilistically at the onset of congestion, leading to backoffs by Transmission Control Protocol (TCP) flows. However, wireless losses may be misinterpreted as congestive losses and induce spurious backoffs. In this paper, we raise the basic question: Can AQM maintain a stable, small backlog under wireless losses? We find that the representative AQM, random early detection (RED), fails to maintain a stable backlog under time-varying wireless losses. We find that the key to resolving the problem is to robustly track the backlog to a preset reference level, and apply the control-theoretic vehicle, internal model principle, to realize such tracking. We further devise the integral controller (IC) as an embodiment of the principle. Our simulation results show that IC is robust against time-varying wireless losses under various network scenarios. © 2012 IEEE.
 
ISBN978-1-4673-1298-1
 
ISSN1548-615X
 
DOIhttp://dx.doi.org/10.1109/IWQoS.2012.6245989
 
DC FieldValue
dc.contributor.authorLai, C
 
dc.contributor.authorLeung, KC
 
dc.contributor.authorLi, VOK
 
dc.date.accessioned2012-09-20T08:16:51Z
 
dc.date.available2012-09-20T08:16:51Z
 
dc.date.issued2012
 
dc.description.abstractIn order to maintain a small, stable backlog at the router buffer, active queue management (AQM) algorithms drop packets probabilistically at the onset of congestion, leading to backoffs by Transmission Control Protocol (TCP) flows. However, wireless losses may be misinterpreted as congestive losses and induce spurious backoffs. In this paper, we raise the basic question: Can AQM maintain a stable, small backlog under wireless losses? We find that the representative AQM, random early detection (RED), fails to maintain a stable backlog under time-varying wireless losses. We find that the key to resolving the problem is to robustly track the backlog to a preset reference level, and apply the control-theoretic vehicle, internal model principle, to realize such tracking. We further devise the integral controller (IC) as an embodiment of the principle. Our simulation results show that IC is robust against time-varying wireless losses under various network scenarios. © 2012 IEEE.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationThe 20th International Workshop on Quality of Service (IEEE/ACM IWQoS 2012), Coimbra, Portugal, 4-5 June 2012. In International Workshop on Quality of Service, 2012, p. 1-9 [How to Cite?]
DOI: http://dx.doi.org/10.1109/IWQoS.2012.6245989
 
dc.identifier.doihttp://dx.doi.org/10.1109/IWQoS.2012.6245989
 
dc.identifier.epage9
 
dc.identifier.hkuros210460
 
dc.identifier.hkuros201149
 
dc.identifier.isbn978-1-4673-1298-1
 
dc.identifier.issn1548-615X
 
dc.identifier.scopuseid_2-s2.0-84866626336
 
dc.identifier.spage1
 
dc.identifier.urihttp://hdl.handle.net/10722/165303
 
dc.languageeng
 
dc.publisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000600
 
dc.publisher.placeUnited States
 
dc.relation.ispartofInternational Workshop on Quality of Service
 
dc.rightsInternational Workshop on Quality of Service. Copyright © Institute of Electrical and Electronics Engineers.
 
dc.rights©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
 
dc.subjectActive queue management algorithms
 
dc.subjectBackoffs
 
dc.subjectIntegral controllers
 
dc.subjectInternal model principle
 
dc.subjectNetwork scenario
 
dc.titleEnhancing AQM to combat wireless losses
 
dc.typeConference_Paper
 
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<contributor.author>Li, VOK</contributor.author>
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<identifier.citation>The 20th International Workshop on Quality of Service (IEEE/ACM IWQoS 2012), Coimbra, Portugal, 4-5 June 2012. In International Workshop on Quality of Service, 2012, p. 1-9</identifier.citation>
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<description.abstract>In order to maintain a small, stable backlog at the router buffer, active queue management (AQM) algorithms drop packets probabilistically at the onset of congestion, leading to backoffs by Transmission Control Protocol (TCP) flows. However, wireless losses may be misinterpreted as congestive losses and induce spurious backoffs. In this paper, we raise the basic question: Can AQM maintain a stable, small backlog under wireless losses? We find that the representative AQM, random early detection (RED), fails to maintain a stable backlog under time-varying wireless losses. We find that the key to resolving the problem is to robustly track the backlog to a preset reference level, and apply the control-theoretic vehicle, internal model principle, to realize such tracking. We further devise the integral controller (IC) as an embodiment of the principle. Our simulation results show that IC is robust against time-varying wireless losses under various network scenarios. &#169; 2012 IEEE.</description.abstract>
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<subject>Active queue management algorithms</subject>
<subject>Backoffs</subject>
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Author Affiliations
  1. The University of Hong Kong