ASTM E2213-2003 路边和运载工具系统间远程通信和信息交换用标准规范.5GHz频带上专用短程通信(DSRC)媒体访问控制(MAC)和物理层(PHY)规范

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【英文标准名称】:StandardSpecificationforTelecommunicationsandInformationExchangeBetweenRoadsideandVehicleSystems&8212;5GHzBandDedicatedShortRangeCommunications(DSRC)MediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications
【原文标准名称】:路边和运载工具系统间远程通信和信息交换用标准规范.5GHz频带上专用短程通信(DSRC)媒体访问控制(MAC)和物理层(PHY)规范
【标准号】:ASTME2213-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E17.51
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:信息交流;运载工具;物理层;电信;多路存取计算机;媒体访问控制;通信设备;访问控制
【英文主题词】:(MAC);(PHY);wireless;high-speed;onboardunit(OBU);roadsideunit(RSU)
【摘要】:1.1Thisspecificationdescribesamediumaccesscontrol(MAC)andphysicallayer(PHY)specificationforwirelessconnectivityusingdedicatedshort-rangecommunications(DSRC)services.ThisstandardisbasedonandreferstoIEEEStandards802.11,WirelessLANMediumAccessControlandPhysicalLayerSpecifications,and802.11a,WirelessLANMediumAccessControlandPhysicalLayerSpecificationsHigh-SpeedPhysicalLayerinthe5GHzBand,withpermissionfromtheIEEEsociety.ThisspecificationismeanttobeanextensionofIEEE802.11technologyintothehigh-speedvehicleenvironment.Aspresentedhere,thisspecificationcontainsjustenoughinformationtoexplainthedifferencebetweenIEEE802.11andIEEE802.11aoperatingparametersrequiredtoimplementamostlyhigh-speeddatatransferserviceinthe5.9-GHzIntelligentTransportationSystemsRadioService(ITS-RS)Band.PotentialoperationswithintheUnlicensedNationalInformationInfrastructure(UNII)Bandarealsoaddressed,asappropriate.1.2Purpose8212Thepurposeofthisspecificationistoprovidewirelesscommunicationsovershortdistancesbetweeninformationsourcesandtransactionsstationsontheroadsideandmobileradiounits,betweenmobileunits,andbetweenportableunitsandmobileunits.Thecommunicationsgenerallyoccuroverline-of-sightdistancesoflessthan1000mbetweenroadsideunitsandmostlyhighspeed,butoccasionallystoppedandslowmoving,vehiclesorbetweenhigh-speedvehicles.Thisspecificationalsooffersregulatorybodiesameansofstandardizingaccesstothe5.9GHzfrequencybandforthepurposeofinteroperablecommunicationstoandbetweenvehiclesatline-of-sightdistancesontheroadway.1.3Specifically,thisspecificationaccomplishesthefollowing:1.3.1DescribesthefunctionsandservicesrequiredbyaDSRCandIEEE802.11compliantdevicetooperateinahigh-speedmobileenvironment.1.3.2ReferstoIEEE802.11MACprocedures.1.3.3Definesthe5.9GHzDSRCsignalingtechniqueandinterfacefunctionsthatarecontrolledbytheIEEE802.11MAC.1.3.4PermitstheoperationofaDSRCconformantdevicewithinaDSRCcommunicationszonethatmaycoexistwithmultipleoverlappingDSRCcommunicationzones.1.3.5DescribestherequirementsandprocedurestoprovideprivacyofuserinformationbeingtransferredoverthewirelessmediumandauthenticationoftheDSRCorIEEE802.11conformantdevices.
【中国标准分类号】:M11
【国际标准分类号】:35_100_10;43_040_10
【页数】:26P.;A4
【正文语种】:


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【英文标准名称】:SteelBushedRollerlessChains,Attachments,andSprocketTeeth
【原文标准名称】:钢套筒无滚子链、附件及链轮齿
【标准号】:ANSI/ASMEB29.12M-1997
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:链条;动力传动工程;动力传输系统
【英文主题词】:Bushchains;Chains;Conveyorchains;Dimensions;Fixings;Interlockingjoints;Invertedtoothchains;Joiningdevice;Metric;Powertransmissionengineering;Powertransmissionsystem;Sprockets
【摘要】:Thisstandardcoversnomenclature,generalchainproportionsanddesignations,chainandattachmentdimensionsforsteelbushedrollerlesschains,attachmentsandsprocketteeth
【中国标准分类号】:J18
【国际标准分类号】:21_220_30
【页数】:
【正文语种】:英语


【英文标准名称】:Steelwireropes-Standarddesignations
【原文标准名称】:钢丝绳.标准牌号
【标准号】:ISO3578-1980
【标准状态】:作废
【国别】:国际
【发布日期】:1980-07
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC105
【标准类型】:()
【标准水平】:()
【中文主题词】:钢丝绳;符号;金属丝绳;钢制品;名称与符号
【英文主题词】:steelproducts;designations;wireropes;steel-wireropes;symbols
【摘要】:
【中国标准分类号】:H49
【国际标准分类号】:77_140_65
【页数】:6P;A4
【正文语种】:英语