ICC10_Group Handover Scheme using Adjusted Delay for Multi-Access Networks

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1、ThisfulltextpaperwaspeerreviewedatthedirectionofIEEECommunicationsSocietysubjectmatterexpertsforpublicationintheIEEEICC2010proceedingsGroupHandoverSchemeusingAdjustedDelayforMulti-AccessNetworksWoongsupLee∗andDong-HoCho†DepartmentofElectricalEngineeringandComputerScienceKoreaAdvancedInstituteofScien

2、ceandTechnology(KAIST)Daejeon,305-701,RepublicofKoreaE-mail:∗wslee@comis.kaist.ac.kr,†dhcho@ee.kaist.ac.krAbstractInthispaper,weproposeagrouphandoverschemearelikelytoselectthesameAP,anditwillcausenetworkinmulti-accessnetworks,whichutilizesadjusteddelaytopreventcongestionandcausehandovertobeblocked.T

3、hisproblemhandoverblockingscausedbyagrouphandover.Inthegroupofthegrouphandoverbecomesmoresevereintacticalwirelesshandover,alotofuserstrytoinitiateahandoveratthesametime,systemsbecauseusersarelikelytomoveincluster[3],whichwhichcausesnetworkcongestionandincreasestheprobabilitythatthehandoverwouldbeblo

4、cked.Inourproposedscheme,increasesthenumberofgrouphandovers.Andgiventhatuserstopreventtheseproblemsofagrouphandover,eachuserwhichinthetacticalwirelesssystemswillmovefastercomparedtoparticipatesinthegrouphandover,optimallyselectsanaccessusersincommercialwirelesssystems,whichalsoincreasespoint(AP)base

5、dontheremainingresourcesoftheAP,andthenumberofgrouphandoversandtheproblemofthegroupeachuserinitiatesahandoverafteradjusteddelaytopreventhandoverbecomesmoretroublesome.networkcongestion.TofindanoptimalAPselectionstrategy,weformulateanoptimizationproblemwhoseobjectiveistominimizeThemajorityofpreviouswo

6、rksonagrouphandoverhandoverblockingprobability,andderiveanoptimalsolutionconsidertheuseofamobilerelaystation[4][5].In[4],byusingtheKarush-Kuhn-Tucker(KKT)condition.Throughauthorsconsideragrouphandoveroccurringatatrainstation.performanceanalysisandsimulationresults,weshowthatourTheauthorsproposeagrou

7、phandoverschemeinwhichaproposedschemecanreducehandoverblockingprobabilityinamobilerouterdeployedonatrainhelpstheinitiationofthegrouphandovercomparedtoaconventionalschemeandkeephandoverblockingprobabil