internetworking wwans and wlans in next generation wireless data networksnew

《internetworking wwans and wlans in next generation wireless data networksnew》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、INTERNETWORKINGWWANSANDWLANSINNEXTGENERATIONWIRELESSDATANETWORKSHung-YunHsiehandRaghupathySivakumarGNANResearchGroupSchoolofElectricalandComputerEngineeringGeorgiaInstituteofTechnology{hyhsieh,siva}@ece.gatech.eduAbstractbasedcoverage,suchadeploymentisinfeasiblebecauseo

2、fcostandinterferenceconstraints.InthispaperwestudytheinternetworkingofWWANsandAnobvioussolutiontoovercomethelowcapacityproblemWLANsfornextgenerationwirelesspacketdatanetworksofwide-areawirelessnetworksandthelowcoveragemotivatedbythecapacityandcoveragetradeoffsoftheprobl

3、emoflocal-areawirelessnetworksistoperformatwonetworks.Wecomparedifferenttypesofnetworkverticalhand-off[1]fromtheWLANtotheWWANwhenarchitecturesandproposeaone-hopWWANandmulti-ausermovesoutoftheWLANcoveragearea.SuchahopWLANarchitecturetoprovideuserswithguaranteedsolutionha

4、salsobeenproposedinseveralrelatedworksserviceandsmoothhand-offs.Wethenshowthrough[2][3][4].Specifically,theBRANHiperLAN/2attemptstosimulationsthattheproposedarchitecturecoupledwithaintegrateWLANaccesswithinthesameinfrastructurethatfine-grainedpacketschedulingalgorithmac

5、hieveshigherprovides3Gwide-areaaccess.Theadvantageofperformance.Finallyweidentifyseveralopenresearchperformingtheverticalhand-offisself-evident:Whentheissuesassociatedwiththeproposedarchitecture.useriswithintherangeofaWLANaccess-point,ahighdataratepertainingtothatoftheW

6、LANisprovided.As1IntroductiontheusermovesawayfromthecoverageareaoftheWLANWithanincreasingnumberofInternetusersbecomingaccess-point,networkconnectivityisstillseamlesslymobile,wirelessdatanetworkingtechnologiesthatmaintained,albeitatasignificantlylowerdatarate.facilitatet

7、etherlesscommunicationhavecomeunderAlthoughtheafore-mentionedapproachservesasasimpleintensescrutinyandresearch.2.5GwirelesspacketdatasolutiontobridgethedesirablepropertiesofthetwotypessystemssuchasGPRS(GeneralPacketRadioService)ofnetworkenvironments,thekeydrawbacksofusi

8、ngsuchprovidedataratesthatareafewordersofmagnitudelowerasimpleapproacharethecapacityvs.coveragetradeoffsthanth