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  Patent History
  • Application
    US 12/3904859 2013-05-29
  • Granted
    US 20130322247 2013-12-05
  Patent Family

granted patent: ENHANCING AQM TO COMBAT WIRELESS LOSSES

TitleENHANCING AQM TO COMBAT WIRELESS LOSSES
Granted PatentUS 20130322247
Granted Date2013-12-05
Priority Date2013-05-29 US 12/3904859
2012-05-30 US 12/1653143P
Inventors
Issue Date2013
Citation
US Patent US 20130322247. Washington, DC: US Patent and Trademark Office (USPTO), 2013 How to Cite?
AbstractIn order to maintain a small, stable backlog at an internet router buffer, active queue management (AQM) algorithms drop packets probabilistically at the onset of congestion. This causes Transmission Control Protocol (TCP) data flow rates to reduce. However, wireless losses may be misinterpreted as congestive losses and induce spurious reductions in flow rates. A prior art AQM with random early detection (RED), fails to maintain a stable backlog under time-varying wireless losses. However, the present invention can resolve the problem and provide a robust tracking of the backlog to a preset reference level by applying a control-theoretic vehicle, Internal Model principle, to realize such tracking. An integral controller (IC) is used as an embodiment of the principle that is robust against time-varying wireless losses under various network scenarios.
Persistent Identifierhttp://hdl.handle.net/10722/206630
References

 

DC FieldValueLanguage
dc.date.accessioned2014-11-21T08:09:04Z-
dc.date.available2014-11-21T08:09:04Z-
dc.date.issued2013en_US
dc.identifier.citationUS Patent US 20130322247. Washington, DC: US Patent and Trademark Office (USPTO), 2013en_US
dc.identifier.urihttp://hdl.handle.net/10722/206630-
dc.description.abstractIn order to maintain a small, stable backlog at an internet router buffer, active queue management (AQM) algorithms drop packets probabilistically at the onset of congestion. This causes Transmission Control Protocol (TCP) data flow rates to reduce. However, wireless losses may be misinterpreted as congestive losses and induce spurious reductions in flow rates. A prior art AQM with random early detection (RED), fails to maintain a stable backlog under time-varying wireless losses. However, the present invention can resolve the problem and provide a robust tracking of the backlog to a preset reference level by applying a control-theoretic vehicle, Internal Model principle, to realize such tracking. An integral controller (IC) is used as an embodiment of the principle that is robust against time-varying wireless losses under various network scenarios.en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License for public patent documentsen_US
dc.titleENHANCING AQM TO COMBAT WIRELESS LOSSESen_US
dc.typePatenten_US
dc.identifier.authorityLI, VICTOR O K=rp00150en_US
dc.identifier.authorityLEUNG, KA-CHEONG=rp00147en_US
dc.description.naturepublished_or_final_versionen_US
dc.contributor.inventorLI, VICTOR O Ken_US
dc.contributor.inventorLAI, CHENGDIen_US
dc.contributor.inventorLEUNG, KA-CHEONGen_US
patents.identifier.applicationUS 12/3904859en_US
patents.identifier.grantedUS 20130322247en_US
patents.description.assigneeLI VICTOR O K [CN]; LAI CHENGDI [CN]; LEUNG KA-CHEONG [CN]; UNIV HONG KONG [CN]en_US
patents.description.countryUnited States of Americaen_US
patents.date.granted2013-12-05en_US
dc.relation.referencesUS 7286485 (B1) 2007-10-23en_US
dc.relation.referencesUS 7643418 (B1) 2010-01-05en_US
dc.relation.referencesUS 2011090795 (A1) 2011-04-21en_US
patents.identifier.hkutechidEEE-2012-00431-1en_US
patents.date.application2013-05-29en_US
patents.date.priority2013-05-29 US 12/3904859en_US
patents.date.priority2012-05-30 US 12/1653143Pen_US
patents.description.ccusen_US
patents.relation.familyWO 2013178076 (A1) 2013-12-05en_US
patents.description.kindA1en_US
patents.typePatent_granteden_US

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