基于IPv6數(shù)據(jù)包標(biāo)記的網(wǎng)絡(luò)擁塞控制算法的研究.pdf

1、分類號：TP339：5203G40密級F79≤787天津理工大學(xué)研究生學(xué)位論文基于IPv6數(shù)據(jù)包標(biāo)記的網(wǎng)絡(luò)擁塞控制算法的研究基金項(xiàng)目：教育部科學(xué)技術(shù)重點(diǎn)項(xiàng)目(03010)(申請碩士學(xué)位)學(xué)科專業(yè)；計(jì)算機(jī)應(yīng)用技術(shù)研究方向：計(jì)算機(jī)網(wǎng)絡(luò)作者姓名：葉曉鋒指導(dǎo)教師：程明教授2005年1月ABSTRACTIntemethasexperiencedanexplosivelygrowthinthelastmorethantenyearsAlthough

2、thecurrentnetworkcanprovideveryhighbandwidth，theappearanceofvariedapplicationaswellasthesharpincreaseofnetworkusershasmadenetworkcongestionasigniflcantproblemNetworkcongestionoftenresultsinthedeclineofqualityofservice(Qo

3、S)suchastransmissiondelayandthroughput，whilethenetworkresourceutilizationlikebandwidthandbuffersarealsoaffectedseriouslyHowtoayoidandcontrolnetworkisnecessaryforimprovingtheperformanceandutilizationofnetwork。Inthispaperw

4、efirstlygiveareviewoftheprogressofthenetworkcongestioncontrolresearch，andthecurrentsituationofthisfieldwasanalyzedFromtheviewofimplementationplace，thecongestioncontrolstrategiesincludetheendtoendcongestioncontrolimplemen

5、tedatendpointandthequeuemanagementimplementedattherouterThecoreofend—to—endcongestioncontrolistomaketheend—pointadaptingtonetwork’SactualsituationthroughadjustingthesendingrateIncommon，end—to—endcongestioncontrolincludes

6、fourparts：slowstart，congestioncontrol，fastretransmissionandfastrecoverySomeresearchershavemademuchstudyandimprovementonit，butprincipleof“add—increasemulti—decrease’’hasnotbeenchangedAlongwiththetechnicalprogress，forhighs

7、peednetwork，theend—pointcannotusetheresourceaccordingtotheactualnetworksituationInthispaperanewcongestioncontrolstrategywhichincludesendtoendcongestioncontrolandqueuemanagementWaspresented，F(xiàn)oradatasenderitwilladjustitsda

8、taratetoadapttotheactualnetworksituationifthesenderhasbeeninformedofthechangeofnetworksituationChapterfourintroducestheprincipleandimplementationofcongegtioncontrolalgorithmbasedonbandwidthestimationAboutthenetworksituat

9、ion，wedetectitbaSedonqueuemanagementThealgorithmcarlanalyzedatapackagesandcalculatethenumberofflowstherouterhasprocessedIncreaSeofthenumberofflowmeansthepayloadoftherouterwillbeerdaanced，atthissituation，theroutermakethes

10、enderbeinformedofthiseventbypackagemarkingForIPbasedinteractisaconnectionlesspackageswitchingnetwork，itmakesometroubleforthestatisticofthenumberofflows，chapterfivegivesamethodtosolvethisproblemInfinalpartofthispaperweint

11、roducethearchitectureandmaincomponentsofNSThenwediscusshowtosetupsimulationscriptsandanalyzesimulationresultsChaptersixgivesasummarizationofthispaperandpresentthenextworkwewilldoKeywords：internetcongestioncontrol，bafidwi