QBT 2213-1996 地毯分类命名

Designation:E2213–03StandardSpecificationforTelecommunicationsandInformationExchangeBetweenRoadsideandVehicleSystems—5GHzBandDedicatedShortRangeCommunications(DSRC)MediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications1ThisstandardisissuedunderthefixeddesignationE2213;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecification2describesamediumaccesscontrol(MAC)andphysicallayer(PHY)specificationforwirelessconnectivityusingdedicatedshort-rangecommunications(DSRC)services.ThisstandardisbasedonandreferstoIEEEStandards802.11,WirelessLANMediumAccessControlandPhysicalLayerSpecifications,and802.11a,WirelessLANMediumAccessControlandPhysicalLayerSpecificationsHigh-SpeedPhysicalLayerinthe5GHzBand,withpermis-sionfromtheIEEEsociety.ThisspecificationismeanttobeanextensionofIEEE802.11technologyintothehigh-speedvehicleenvironment.Aspresentedhere,thisspecificationcontainsjustenoughinformationtoexplainthedifferencebetweenIEEE802.11andIEEE802.11aoperatingparametersrequiredtoimplementamostlyhigh-speeddatatransferserviceinthe5.9-GHzIntelligentTransportationSystemsRadioService(ITS-RS)Band.PotentialoperationswithintheUnlicensedNationalInformationInfrastructure(UNII)Bandarealsoaddressed,asappropriate.1.2Purpose—Thepurposeofthisspecificationistoprovidewirelesscommunicationsovershortdistancesbetweeninfor-mationsourcesandtransactionsstationsontheroadsideandmobileradiounits,betweenmobileunits,andbetweenportableunitsandmobileunits.Thecommunicationsgenerallyoccuroverline-of-sightdistancesoflessthan1000mbetweenroadsideunitsandmostlyhighspeed,butoccasionallystoppedandslowmoving,vehiclesorbetweenhigh-speedvehicles.Thisspecificationalsooffersregulatorybodiesameansofstandardizingaccesstothe5.9GHzfrequencybandforthepurposeofinteroperablecommunicationstoandbetweenvehiclesatline-of-sightdistancesontheroadway.1.3Specifically,thisspecificationaccomplishesthefollow-ing:1.3.1DescribesthefunctionsandservicesrequiredbyaDSRCandIEEE802.11compliantdevicetooperateinahigh-speedmobileenvironment.1.3.2ReferstoIEEE802.11MACprocedures.1.3.3Definesthe5.9GHzDSRCsignalingtechniqueandinterfacefunctionsthatarecontrolledbytheIEEE802.11MAC.1.3.4PermitstheoperationofaDSRCconformantdevicewithinaDSRCcommunicationszonethatmaycoexistwithmultipleoverlappingDSRCcommunicationzones.1.3.5DescribestherequirementsandprocedurestoprovideprivacyofuserinformationbeingtransferredoverthewirelessmediumandauthenticationoftheDSRCorIEEE802.11conformantdevices.2.ReferencedDocuments2.1IEEEStandards:802.11WirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications3802.11aWirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications—Amendment1:High-SpeedPhysicalLayerinthe5GHzBand32.2FederalDocument:CFR47Title47onTelecommunication43.Terminology3.1Definitions—SeeIEEE802.11,Clause3,inadditiontothefollowinginformation:3.1.1onboardunit(OBU)—anonboardunit(OBU)isaDSRCtransceiverthatisnormallymountedinoronavehicle,butwhichinsomeinstancesmaybeaportableunit.AnOBUcanbeoperationalwhileavehicleorpersoniseithermobileorstationary.TheOBUsreceiveandcontendfortimetotransmit1ThisspecificationisunderthejurisdictionofASTMCommitteeE17onVehicle–PavementSystemsandisthedirectresponsibilityofSubcommitteeE17.51onVehicleRoadsideCommunication.CurrenteditionapprovedJuly10,2003.PublishedSeptember2003.Originallyapprovedin2002.Lastpreviouseditionapprovedin2002asE2213–02e1.2ThisspecificationisbasedonIEEE802.11,1999EditionandIEEE802.11a,1999Edition.ThisspecificationexplainstheDSRCparametersasanextensionoftheIEEE802.11andIEEE802.11adocuments.3AvailablefromInstituteofElectricalandElectronicsEngineers,Inc.(IEEE),445HoesLn.,P.O.Box1331,Piscataway,NJ08854-13314AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,732N.CapitolSt.,NW,MailStop:SDE,Washington,DC20401.1Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.ononeormoreRFchannels.Exceptwherespecificallyexcluded,OBUoperationispermittedwherevervehicleopera-tionorhumanpassageispermitted.TheOBUsmountedinvehiclesarelicensedbyruleandcommunicatewithroadsideunits(RSUs)andotherOBUs.PortableOBUsarealsolicensedbyrule.OBUoperationsintheUNIIBandsfollowtherulesinthosebands.3.1.2roadsideunit(RSU)—aroadsideunitisaDSRCtransceiverthatismountedalongaroadorpedestrianpassage-way.AnRSUmayalsobemountedonavehicleorishandcarried,butitmayonlyoperatewhenthevehicleorhand-carriedunitisstationary.Furthermore,anRSUoperatingunderCFR47Part90rulesisrestrictedtothelocationwhereitislicensedtooperate.However,portableorhand-heldRSUsarepermittedtooperateontheControlChannelandServicechannelswheretheydonotinterferewithasite-licensedoperation.ARSUbroadcastsdatatoOBUsorexchangesdatawithOBUsinitscommunicationszone.AnRSUalsoprovideschannelassignmentsandoperatinginstructionstoOBUsinitscommunicationszone,whenrequired.3.1.3private(applic