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1、Galileo:aToolforSimulationandAnalysisofReal-TimeNetworksEdwardW.KnightlyandGiorgioVentreInternationalComputerScienceInstitute,Berkeley,CA94704andEECSDepartment,UniversityofCalifornia,Berkeley,CA94720Abstractandnetworkprotocols.Theobject-orientedparadigmextendstothepr
2、otocolcode(writteninC++)andfa-Galileoisa
exibletoolforsimulationofheteroge-cilitatesaneasyexchangeofaprotocol'salgorithms.neousreal-timecommunicationnetworksandforde-Themodulardescriptionofnetworksalsoprovidesvelopmentandvalidationofnetworkprotocols.Galileothecapabili
3、tyofsimulatingtheheterogeneityofin-providesseveraluniquefeaturesthatmakeitpar-ternetworks.Becausefuturenetworkswillo erawideticularlysuitableforthesimulationandanalysisofrangeofcommunicationarchitecturesandservicesinanetworksthatprovidequality-of-serviceguarantees.rap
4、idlychangingscenario,Galileoprovideseasyinte-First,itsobject-orientedprogrammingenvironmentgrationofnewnetworkmodelsintotheexistingones,providesthemeansforamodular,hierarchical,het-andsupportsmodularityintheirdevelopment.erogeneousdescriptionofnetworks.Second,itsmul-T
5、hesecondfeatureofGalileoisquality-of-servicetimediadeviceinterfaceprovidesthetoolsforaquali-simulationwithanemphasisonmultimediaapplica-tativeanalysisofnetworkprotocols.Finally,Galileo'stions.Theprimarygoalofthereal-timenetworksim-networkinterfaceprovidesinteractionwi
6、thactualnet-ulatoristoshowthequantitativee ectsofnetworkworkstoaccessrealdataandsimulaterealisticmulti-managementdecisionsonthetrac,andtoverifymediascenarios.boththecorrectnessandeciencyoftheresourceal-locationschemes.Inaddition,Galileofacilitatesthequalitativeevalu
7、ationofprotocolsbyinteractingdi-1Introductionrectlywithmultimediadevicesandapplications.Forexample,GalileosupportsthesendingofvideopacketsInthispaperwepresentGalileo,atooldesignedacrossthesimulatednetworkshowingthee ectsoftheandimplementedtoaddressseveralproblemsuniqu
8、enetworkontransmittedvideostreams.Thisfeatureistothesimulationandanalysisofreal-timecommuni-especiallyusefultothenetworkdesi
