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1、中國科學(xué)院計(jì)算技術(shù)研究所博士學(xué)位論文移動IP性能模型及其分析姓名：趙慶林申請學(xué)位級別：博士專業(yè)：計(jì)算機(jī)系統(tǒng)結(jié)構(gòu)指導(dǎo)教師：李忠誠20050501AbstractAstheInternetandwirelesscommunicationnetworksaregrowingandfusingfast，Internetisgoingtowardbandwidthnetworksandwirelessandmobilenetworks．Asforwirelessandmobilenetworks，oneofthemostimportantproblemsistodisc
2、overmobilenode’scurrentlocationandmaintainitsallongoingcommunications．Inthenextgenerationwirelessandmobilenetworks，MobileIPisanetworklayersolutiontothisproblemandisplayingaroleoffootstone．However,usingMobileIPmaycauseexcessivesignalingtraffic，longsignalingdelayandSOon．Thereal·timeap
3、plicationsinthewirelessandmobilenetworkshavechallengedthesedrawbackswhichhaveinspiredlotsofresearchwithgreatinterest．TheresearcheswhichnumericallyanalyzetheMobileIP’sperformancearedeficient．ThisthesisfirstlydividestherecenttechnologieswhichenhancetheefficiencyofMobileIPintoseventype
4、sofschemes：physicallocationbasedscheme，localizedmobilitybasedscheme，IPpagingbasedscheme，routechangebasedscheme，lowerlayerbasedscheme，decisionenginebasedschemeandservicetransferbasedscheme，expoundsthemrespectively．Then，fromthetheoreticalviewpoint，thethesismodelsandanalyzesthemovement
5、detection，handoffcharacteristic，regionalregistration．Theinnovationsofthethesisarethefollowings：MovementDetection：Forthefirsttime，usingtherenewalprocess，twobasicmovementdetectionschemcs一一eagercellswitchingschemeandlazycellswitchingschemeareanalyzedandthegeneralprobabilityexpressionsa
6、boutthemovementdetectiondelayareobtained．Then，focusingtheirdrawbacks——longmovementdetectiondelayanddifficultparameterconfigurationetc．，thethesisproposesthedynamicschemeswhichcombinethecurrentnetworkstate，andnumericallyanalyzesthembythecompoundPoissonprocess．Thenumericalresultsshowth
7、attheproposedschemesoutperformtheexistingones，whichcanreducetheunnecessaryincreaseinmovementdetectiondelay．HandoffCharacleristics：Forthefirsttime，fromthecellularnetworklayout，handoffcategoryandmovementvelocityetc．，thethesisnumericallyanalyzesthehandoffcharacterizationsofMobileIPresp
8、ectively：handoffdel
