GJB2213-1994直流小电流标准源检定规程.pdf

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1、免费标准网(www.freebz.net)Designation:E2213–02StandardSpecificationforTelecommunicationsandInformationExchangeBetweenRoadsideandVehicleSystems—5GHzBandDedicatedShortRangeCommunications(DSRC)MediumAccess1Control(MAC)andPhysicalLayer(PHY)SpecificationsThisstandardisissuedunderthe®xeddesignationE2

2、213;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.ScopeDSRCandIEEE802.11comp

3、liantdevicetooperateina1.1Thisspeci®cation2describesamediumaccesscontrolhigh-speedmobileenvironment.(MAC)andphysicallayer(PHY)speci®cationforwireless1.3.2ReferstoIEEE802.11MACprocedures.connectivityusingdedicatedshort-rangecommunications1.3.3De®nesthe5.9-GHzDSRCsignalingtechniqueand(DSRC

4、)services.ThisstandardisbasedonandreferstoIEEEinterfacefunctionsthatarecontrolledbytheIEEE802.11Standards802.11,WirelessLANMediumAccessControlandMAC.PhysicalLayerSpeci®cations,and802.11a,WirelessLAN1.3.4PermitstheoperationofaDSRCorIEEE802.11MediumAccessControlandPhysicalLayerSpeci®cation

5、sconformantdevicewithinawirelesslocalareanetwork(LAN)High-SpeedPhysicalLayerinthe5GHzBand,withpermis-thatmaycoexistwithmultipleoverlappingDSRCcommuni-sionfromtheIEEEsociety.Thisspeci®cationismeanttobeancationzonesorIEEE802.11wirelessLANs.extensionofIEEE802.11technologyintothehigh-speed1.

6、3.5Describestherequirementsandprocedurestoprovidevehicleenvironment.Aspresentedhere,thisspeci®cationprivacyofuserinformationbeingtransferredoverthewirelesscontainsjustenoughinformationtoexplainthedifferencemedium(WM)andauthenticationoftheDSRCorIEEEbetweenIEEE802.11andIEEE802.11aoperating

7、parameters802.11conformantdevices.requiredtoimplementamostlyhigh-speeddatatransfer2.ReferencedDocumentsserviceinthe5.9-GHzIntelligentTransportationSystemsRadioService(ITS-RS)BandortheUnlicensedNational2.1IEEEStandards:InformationInfrastructure(UNII)Band,asappropriate.802.