一种改进的空分交换型OPS节点结构及其性能分析-豆柴文库

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一种改进的空分交换型OPS节点结构及其性能分析
Title:AnImprovedSpaceDivisionExchangeTypeOPSNodeStructureandItsPerformanceAnalysis
Abstract:
SpaceDivisionExchange(SDE)TypeOpticalPacketSwitching(OPS)isapromisingsolutionforhigh-speeddatacommunication.Inthispaper,weproposeanimprovedSDETypeOPSnodestructurethatenhancestheperformanceoftraditionalOPSnetworks.Wediscussthekeyfeaturesanddesignprinciplesoftheproposednodestructureandconductacomprehensiveperformanceanalysistoevaluateitseffectivenessintermsofpacketloss,delay,andthroughput.OurfindingsindicatethattheimprovedOPSnodestructuresignificantlyimprovesnetworkperformancecomparedtotraditionaldesigns.
1.Introduction
Withtherapidgrowthofinternettrafficandtheincreasingdemandforhigh-speeddatacommunication,opticalpacketswitching(OPS)hasemergedasapromisingsolutiontomeettheserequirements.OPSoffersseveraladvantagesovertraditionalelectronicpacketswitching,suchashighcapacity,lowpowerconsumption,andlowlatency.However,OPSnetworksfacechallengesintermsofpacketcontentions,packetloss,anddelay,whichcandegradenetworkperformance.Toovercomethesechallenges,weproposeanimprovedspacedivisionexchange(SDE)TypeOPSnodestructure.
2.ImprovedSDETypeOPSNodeStructure
Theproposednodestructureconsistsofmultipleinputandoutputports,aroutingmechanism,spacedivisionswitches,andbufferingunits.Theinputportsacceptincomingopticalpacketsandconvertthemintoelectricalsignals.Theroutingmechanismdeterminestheoptimaloutputportforeachpacketbasedonitsdestinationaddress.Thespacedivisionswitchesensurenon-blockingpacketswitchingbydirectingeachincomingpackettotheappropriateoutputport.Thebufferingunitsstorepacketstemporarilyduringcontentionresolutiontopreventpacketloss.
3.DesignPrinciples
TheimprovedOPSnodestructureincorporatestwodesignprinciples:wavelengthconversionandcontentionresolution.Wavelengthconversionallowsforimprovedpacketroutingefficiencybyconvertingpacketstodifferentwavelengths,reducingcontentionattheoutputports.Contentionresolutionemploysaround-robinschedulingalgorithmtoarbitratepacketconflic