移动IP性能模型及其分析

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1、中国科学院计算技术研究所博士学位论文移动IP性能模型及其分析姓名：赵庆林申请学位级别：博士专业：计算机系统结构指导教师：李忠诚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