gjb2213-1994 直流小电流标准源检定规程

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1、Designation:E2213–02StandardSpecificationforTelecommunicationsandInformationExchangeBetweenRoadsideandVehicleSystems—5GHzBandDedicatedShortRangeCommunications(DSRC)MediumAccess1Control(MAC)andPhysicalLayer(PHY)SpecificationsThisstandardisissuedunderthe®xeddesignationE2213;

2、thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.ScopeDSRCandI

3、EEE802.11compliantdevicetooperateina1.1Thisspeci®cation2describesamediumaccesscontrolhigh-speedmobileenvironment.(MAC)andphysicallayer(PHY)speci®cationforwireless1.3.2ReferstoIEEE802.11MACprocedures.connectivityusingdedicatedshort-rangecommunications1.3.3De®nesthe5.9-GHz

4、DSRCsignalingtechniqueand(DSRC)services.ThisstandardisbasedonandreferstoIEEEinterfacefunctionsthatarecontrolledbytheIEEE802.11Standards802.11,WirelessLANMediumAccessControlandMAC.PhysicalLayerSpeci®cations,and802.11a,WirelessLAN1.3.4PermitstheoperationofaDSRCorIEEE802.11

5、MediumAccessControlandPhysicalLayerSpeci®cationsconformantdevicewithinawirelesslocalareanetwork(LAN)High-SpeedPhysicalLayerinthe5GHzBand,withpermis-thatmaycoexistwithmultipleoverlappingDSRCcommuni-sionfromtheIEEEsociety.Thisspeci®cationismeanttobeancationzonesorIEEE802.1

6、1wirelessLANs.extensionofIEEE802.11technologyintothehigh-speed1.3.5Describestherequirementsandprocedurestoprovidevehicleenvironment.Aspresentedhere,thisspeci®cationprivacyofuserinformationbeingtransferredoverthewirelesscontainsjustenoughinformationtoexplainthedifferencem

7、edium(WM)andauthenticationoftheDSRCorIEEEbetweenIEEE802.11andIEEE802.11aoperatingparameters802.11conformantdevices.requiredtoimplementamostlyhigh-speeddatatransfer2.ReferencedDocumentsserviceinthe5.9-GHzIntelligentTransportationSystemsRadioService(ITS-RS)BandortheUnlicen

8、sedNational2.1IEEEStandards:InformationInfrastructure(UNII)Band,asappropriate.802.11WirelessLANMediumAc