異構(gòu)無線網(wǎng)絡(luò)中無縫切換機制及其性能研究.pdf

1、南京郵電大學碩士學位論文異構(gòu)無線網(wǎng)絡(luò)中無縫切換機制及其性能研究姓名：蔡景申請學位級別：碩士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：張載龍20100301南京郵電大學碩士研究生學位論文AbstractAbstractAlongwimtherapiddevelopmentofwirelesscommunicationtechnologymanywirelessaccesstechnologieshaveemergedAnditishopedthatp

2、eoplealeabletoamfreelyinthewirelessnetworkenvironmentButthesetechnologiesaleaimedatsomespecificrequirementsSOnoneofthemCanmeetallrequirementsofusers111eevolutiongoalofB3G／4GistodeploydifferentnetworktomeettheneedsofUSerS

3、SotheintegrationofheterogeneouswirelessnetworksisveryimportantVerticalhandoveristhekeyissueintheintegrationofheterogeneouswirelessnetworksNowhorizontalhandoverhasbeenextensivelystudied，buttheverticalhandoffstillfacesgrea

4、tchallengesⅢspaperfirstintroducesthebasicconceptsofmobilitymanagement，describesthenetworklayermobilitymanagementschemesindetail，analysesthedifferencesbetweenhorizontalhandoverandverticalhandoverThenonthebasisofthepropose

5、dhandoverschemesinheterogeneouswirelessnetworks，anAdaptiveTimingSelectionSeamlessHandoffScheme(ATSSHS)isproposedThisschemetriggershandoverthroughtheadaptivetimingselectionhandoverdecisionalgorithmandcontrolshandovertoget

6、herwiththeoptimizedFHMIPv6schemeThisschemecanmakehandoverdecisionaccordingtodifferentnetworkcircumstances，itmakesuseofthetimingofparameterscollection，stableperiodchoosing，buffering，muticastingandselectivedeliveryanditcan

7、meetthehandoverrequirementsinheterogeneouswirelessnetworksAndthen，wediscussthethehandoverprocessofATSSHSschemeFinallythispapermakesatheoreticalanalysisoftheperformanceoftheproposedschemeandmakesuseofNS2networksimulations