基于雙向路徑的TCP擁塞控制研究.pdf

1、分類號(hào)：!!塑!：塑密級(jí)：——單位代碼：]Q當(dāng)9學(xué)號(hào)：!堅(jiān)!!塹侖肥工學(xué)大警碩士學(xué)位論文。論文題目：基于雙向路徑的TOP擁塞控制研究學(xué)位類別：高校教師岸7槳、計(jì)算機(jī)應(yīng)用技術(shù)(程領(lǐng)域)計(jì)舁利L勝用玫不作者姓名：導(dǎo)師姓名：完成時(shí)間：袁琴沈明玉副教授2007年3月StudyonCongestionControlofTCPbasedonbidirectionalpathAbstraetTCPisanimportantfiletransferpr

2、otocolbasedontheInternetAndnetworkcongestionisamajorfactorofdatalossthatcausingreductionofQOS(TCPcongestioncontrolmechanismcaneffectivelyavoidthedatalossduetocongestionandsothatthequalityofQOScanbeimprovedOntheotherhand，

3、whenTCPwhichisbasedonlinkedconveysnumerousdataunidirectiOnally，itwillassumestatesimilartothecongestionAndstandardTCPcongestioncontrolmechanismcan’ttellapartthemAccordinglythissituationbringsaboutfrequentlystartingoftheco

4、ngestioncontrolandreducestheefficiencyofQOSRTT(RoundTripTime)isthebaseofrealizationoftheTCPprotocol，anditisalsoaveryimportantparameterofjudgingdegreeofthenetworkcongestionInthepaper，firstly，weintroducethemeasuretheoryoft

5、raditionalRTT，andanalyzethestructureofRTTSecondly，thedifferencesbetweenbidirectionalsymmetrypathandasymmetrypathhasbeenpointedout，andthelimitationoftraditionalRTT，whichundertheconditionofnotchangingthestructureofstandard

6、TCPalsohasbeenanalyzedwhentransmitlargevolumeofdataunilaterally(multicast)anddelaysensitivity(wirelessnetworkbasedOUcontrolledenergy)Lastly，weproposakindoftransmitandcontrolarithmeticofoptimizationRTTalgorithmwhichwasbas

7、edonbidirectionalasymmetrypath，weshowthatthenewRTTalgorithmsuitstothenetworkcircumstanceofunilaterallargedatatransmitandsensitivetodelayThesimulationprovesitcouldeffectivelydistinguishtheunilaterallargedatatransmitandnet

8、workcongestion，eonsequently，itcouldimproveeffectivelytheQOSThemaincontributionsofmyworkareasfollows：。(1)OnthebasisofsystemsanalysistothesymmetryoftheRTTmeasurement，weanalyzedthecurrentsituationanddemandofnetwork，andputfo