異構(gòu)無(wú)線網(wǎng)絡(luò)中無(wú)縫切換機(jī)制及其性能研究.pdf

1、南京郵電大學(xué)碩士學(xué)位論文異構(gòu)無(wú)線網(wǎng)絡(luò)中無(wú)縫切換機(jī)制及其性能研究姓名：蔡景申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：張載龍20100301南京郵電大學(xué)碩士研究生學(xué)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