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1、UniversitadegliStudidiBolognaμDipartimentodiElettronicaInformaticaeSistemistica,DEISDottoratodiRicercainIngegneriaElettronica,InformaticaedelleTelecomunicazioniXIXCicloWirelessHeterogeneousNetworksCoordinatore:Tesidi:Chiar.moProf.Ing.PaoloBassiIng.ClaudioG
2、ambettiRelatore:Chiar.moProf.Ing.OresteAndrisanoSettorescientiˉco-disciplicare:ING-INF/03TELECOMUNICAZIONIContentsIntroduction11TD-SCDMASystemSimulatordesign91.1TD-SCDMAairinterface............................111.2TD-SCDMASystemSimulator...................
3、.....141.2.1LinkLevelsimulator..........................151.2.2Link-to-NetworklevelInterfacemodule................171.2.3NetworkLevelsimulator........................191.2.4UpperLayersimulator.........................221.3HowtoconverttheTD-SCDMAsystemsimul
4、atortotheUTRAFDDoption242PerformanceofTD-SCDMAinmixedCS/PStra±cscenarios312.1Packetscheduler................................322.2Powercontrol..................................332.3Scenarioandpropagationenvironment....................342.4PerformanceMetrics
5、..............................372.5Simulationresults................................382.5.1Circuitswitchedservices........................382.5.2Packetandcircuitswitchedservices..................402.5.3CS/PSperformanceenhancements..................413LinkL
6、evelaspectsmodellinginthesimulationofpacketswitchedwire-lessnetworks473.1Wirelesssystemsimulations..........................473.2LinkandNetworkLevelAnalysis.......................483.2.1Networklevelsimulatorwithalargesimulationstep.........493.2.2Networkle
7、velsimulatorwithsmallvalueofsimulationstep.....503.3AnExampleonhowtointerfaceLinkandNetworkLevels.........533.3.1LinkLeveltoInterfaceModulecommunication............54iiiContents3.3.2InterfaceModuletoNetworkLevelcommunication.........543.4Anexperimentforthe
8、validationoftheproposedlink-to-networkinterfacemethod.....................................574ArchitecturesforHeterogeneousWirelessNetworks614.1Serviceinterworking..............................624.2Proposedarc
