1、BRITISH STANDARD BS EN 12834:2003 Road transport and traffic telematics Dedicated Short Range Communication (DSRC) DSRC application layer The European Standard EN 12834:2003 has the status of a British Standard ICS 35.100.70; 35.240.60 BS EN 12834:2003 This British Standard, was published under the
2、authority of the Standards Policy and Strategy Committee on 25 November 2003 BSI 25 November 2003 ISBN 0 580 42968 7 National foreword This British Standard is the official English language version of EN 12834:2003. It supersedes DD ENV 12834:1998 which is withdrawn. The UK participation in its prep
3、aration was entrusted to Technical Committee EPL/278, Road transport informatics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publi
4、cations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the nec
5、essary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the int
6、erpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 44, an inside back cover and a
7、 back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN12834 November2003 ICS35.100.70;35.240.60 Englishversion Roadtransportandtraffictel
8、ematicsDedicatedShortRange Communication(DSRC)DSRCapplicationlayer Tlmatiquedelacirculationetdutransportroutier CommunicationcourteporteCoucheapplicative StraenverkehrstelematikNahbereichskommunikation FahrzeugBake(DSRC)Anwendungsschicht ThisEuropeanStandardwasapprovedbyCENon4December2002. CENmember
9、sareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember.
10、ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,
11、CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStass
12、art,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN12834:2003EEN12834:2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 6 3 Termsanddefinitions . 6 4 Abbreviations.8 5 Structureoftheapplicationlayercore. .10 6 Tr
13、ansferkernel. 11 6.1 General11 6.2 Services.11 6.3 Behaviour 16 7 Initialisationkernel. .24 7.1 General24 7.2 Services.24 7.3 Behaviour 27 8 Broadcastkernel .33 8.1 General33 8.2 Services.33 8.3 Behaviour 34 AnnexA (normative) Datastructures 36 A.1 Useofmodules .36 A.2 ASN.1modules . .36 AnnexB (nor
14、mative) Namingandregistration.4 1 B.1 General .41 B.2 Itemsforregistration .41 B.3 Itemsdefinedbyapplicationstandards 41 AnnexC (informative) Example 42 AnnexD (informative) Adeviations. 44EN12834:2003(E) 3 Foreword Thisdocument(EN12834:2003)hasbeenpreparedbyTechnicalCommitteeCENTC278“RoadTransporta
15、nd TrafficTelematics”,thesecretariatofwhichisheldbyNEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyMay2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby May2004. ThisdocumentsupersedesENV12834:1997. Th
16、edevelopmentofthisEuropeanStandardwascarriedoutunderEuropeanCommissionMandateM/018. ThisEuropeanStandardformspartofaseriesofEuropeanStandardsdefiningtheframeworkofaDedicated ShortRangeCommunication(DSRC)linkintheRoadTransportandTrafficTelematics(RTTT)environment. ThecommunicationrequirementsofmanyRT
17、TTapplicationscanbefulfilledbyDSRC.TheDSRCstandards enablecompliantcommunicationsystemstoservemultipleRTTTapplicationsinparallel. Thesmallserviceareasandsevererealtimeconstraintsrequireaspecificprotocolarchitectureleadingtothe reducedprotocolstackshowninFigureA,builtupbytheApplicationLayer,theDataLi
18、nkLayer,andthePhysical Layer.Suchanarchitectureisverycommonforrealtimeenvironments. ThisEuropeanStandardgivesthearchitectureandservicesofferedbytheDSRCApplicationLayer. FigureADSRCprotocolstack ThefollowingsetofEuropeanStandardsfortheDSRClinkisissuedbyCEN: EN12253“DSRCPhysicalLayerusingMicrowaveat5,
19、8GHz”; EN12795“DSRCDataLinkLayer:MACandLLC”; EN12834“DSRCApplicationLayer“(thisEuropeanStandard); prEN13372“DSRCProfilesforRTTTApplications“. AnnexesAandBarenormative.AnnexesCandDareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesare
20、boundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRe public,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN12834:2003(E) 4 1Scope ThisEuropeanStandardspecifiestheApplica
21、tionLayerCorewhichprovidescommunicationtoolsforapplications basedonDSRC.ThesetoolsconsistofKernelsthatcanbeusedbyapplicationprocessesviaserviceprimitives. Theapplicationprocesses,includingapplicationdataandapplicationspecificfunctions,areoutsidethescopeof thisEuropeanStandard. Thestandardisnamed“App
22、licationLayer”although itdoesnotcoverallfunctionalityofOSILayer7and itincludesfunctionalityfromlowerlayers. ThisEuropeanStandardusesservicesprovidedbyDSRCDataLinkLayer,EN12795,andcoversfunctionalityof intermediatelayersoftheOSIBasicReferenceModelENISO/IEC74981. Figure1illustratestheglobaldataflowbet
23、weenthepartsoftheDSRCstack(Physical,DataLinkandApplication Layers)andtheapplication. Figure1ArchitectureanddataflowoftheDSRCstack NOTE FordefinitionsofthetermsusedinFigure1seeENISO/IEC74981.EN12834:2003(E) 5 ThefollowingsubjectsarecoveredbythisEuropeanStandard: applicationLayerstructureandframework;
24、 servicestoenabledatatransferandremoteoperations; applicationmultiplexingprocedure; fragmentationprocedure; concatenationandChainingprocedures; commonencodingrulestotranslatedatafromabstractsyntaxASN.1,ISO/IEC88241,intotransfersyntax, ISO/IEC88252,andviceversa; communicationinitialisationandreleasep
25、rocedures; broadcastservicesupport; DSRCmanagementsupportincludingcommunicationprofilehandling. ItisoutsidethescopeofthisEuropeanStandardtodefineasecuritypolicy.Sometransportmechanismsfor securityrelateddataareprovided. NOTE DuringthelifetimeofENV12834:1997,noimplementationoftheBroadcastPoolfunction
26、alityhasbecomeknown. BroadcastPoolfunctionalityisthereforeconsidereduntestedandiskeptinthisEuropeanStandardforcompatibilitywiththe ENVonly.EN12834:2003(E) 6 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecit
27、edattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includi
28、ngamendments). ISO/IEC88241:2000, InformationtechnologyAbstractSyntaxNotationOne(ASN.1):Specificationofbasic notation. ISO/IEC88252:2000, InformationtechnologyASN.1encodingrules:SpecificationofPackedEncoding Rules(PER). ENISO/IEC74981, InformationtechnologyOpenSystemsInterconnectionBasicReferenceMod
29、el:The BasicModel(ISO/IEC74981). EN12795, RoadTransportandTrafficTelematics(RTTT)DedicatedShortRangeCommunication(DSRC) DSRCDataLinkLayer:MediumAccessandLogicalLinkControl. prEN13372, RoadTransportandTrafficTelematics(RTTT)DedicatedShortRangeCommunication(DSRC) DSRCProfilesforRTTTApplications. ENVIS
30、O14906, RoadTransportandTrafficTelematics(RTTT)ElectronicFeeCollection(EFC) Applicationinterfacedefinitionfordedicatedshortrangecommunications(ISO/TR14906:1998). ENVISO14816, RoadTrafficandTransportTelematicsAutomaticvehicleandequipmentidentification Numberinganddatastructures(ISO/TR14816:2000). 3 T
31、ermsanddefinitions ForthepurposeofthisEuropeanStandard,thefollowingtermsanddefinitionsapply. 3.1 application useroftheservicesofferedbytheDSRCcommunicationstack 3.2 attribute takesavalue,whichmayhaveastructure,consistingofasetorsequenceofdataelements NOTE Thevalueofanattributecanbeobservedormodified
32、bysendingarequesttoGET(read)orSET(write)thevalue. 3.3 attributeidentifier unambiguouslydistinguishesanattributefromallotherattributeswithinthesameelement 3.4 Beaconservicetable datastructuretransmittedbytheRSUindicatingavailableservices 3.5 broadcastpool datastructurebroadcastfromtheRSUtotheOBUsEN12
33、834:2003(E) 7 3.6 chaining functionperformedbytheTransferKerneltolinktheexecutionofserviceprimitivestogether 3.7 concatenation functionperformedbytheTransferKerneltomapmultipleApplicationLayerProtocolDataUnitsorApplication LayerProtocolDataLayerFragmentsintooneDataLinkLayerServiceDataUnit 3.8 elemen
34、t coherentsetofdataandfunctionality.ApplicationElementsarecreatedbytheApplicationsandareaddressed usingElementIdentifiers 3.9 elementidentifier unambiguouslydistinguishesanelementfromallotherelementsresidinginthesameOBU 3.10 fragmentation functionperformedbytheTransferKerneltomaponeASDUonmultipleLSD
35、Us 3.11 headoftheline queuingdiscipline(alsoreferredtoasstrictorfixedpriorityqueuing),whereanumberofqueuesareservedin priorityorder.Alowerpriorityqueueisservedifallhigherpriorityqueuesareempty,eachqueueisservedinFirst ComeFirstServeorder,eachusergoesheadofthelineoftheusersoflowerprioritiesbutbehinda
36、llusersof equalorhigherpriority 3.12 management providesanddistributesvaluesforthecommunicationparametersforcontrollingtheDSRCCommunicationstack 3.13 multiplexing functionwithintheTransferKernelallowingsimultaneoussupportformorethanoneApplicationinasingleOBU 3.14 operation abstractrepresentationofbe
37、haviourinvokedinanentity 3.15 profile informationaboutcapabilitiesandsettingsinthedifferentDSRClayers 3.16 time numberofsecondspassedsince1stJanuary1970,00:00(UTC) NOTE ThisformatisalsoknownasUNIXtime. 3.17 vehicleservicetable datastructuretransmittedbytheOBUindicatingavailableservicesEN12834:2003(E
38、) 8 4Abbreviations ForthepurposeofthisEuropeanStandard,thefollowingabbreviationsapply. 4.1 AID ApplicationIdentifier 4.2 APDU ApplicationProtocolDataUnit 4.3 ASDU ApplicationServiceDataUnit 4.4 ASN.1 AbstractSyntaxNotationOne ISO/IEC88241:2000 4.5 BKernel BroadcastKernel 4.6 BST BeaconServiceTable 4
39、7 DSRC DedicatedShortRangeCommunication 4.8 EFC ElectronicFeeCollection 4.9 EID ElementIdentifier 4.10 ID Identifier 4.11 IID InvokerIdentifier 4.12 IKernel InitialisationKernelEN12834:2003(E) 9 4.13 LID LogicalLinkControlIdentifier 4.14 LLC LogicalLinkControl 4.15 LPDU LLCProtocolDataUnit 4.16 LSD
40、U LLCServiceDataUnit 4.17 L1 Layer1ofDSRC(PhysicalLayer) 4.18 L2 Layer2ofDSRC(DataLinkLayer) 4.19 L7 ApplicationLayerCoreofDSRC 4.20 NEN NederlandsNormalisatieinstituut(seehttp:/www.nen.nl/cen278) 4.21 OBU OnBoardUnit NOTE Equipmentusuallyresidingonboardavehicle. 4.22 PDU ProtocolDataUnit 4.23 PER P
41、ackedEncodingRules ISO/IEC88252:2000 4.24 RSU RoadSideUnit NOTE Oftenreferredtoasbeacon. 4.25 RTTT RoadTransportandTrafficTelematicsEN12834:2003(E) 10 4.26 TAPDU TransferApplicationProtocolDataUnit 4.27 TKernel TransferKernel 4.28 VST VehicleServiceTable 5 Structureoftheapplicationlayercore Theappli
42、cationlayercoreshallconsistoftheTransferKernel(TKernel)andeithertheInitialisationKernel(I Kernel)ortheBroadcastKernel(BKernel),orboth. Figure2showstheapplicationlayerkernelsandtherelationshipstoexternalentities.TheTKernelprovidesthe basictransportationfacilitiesthatcanbeusedbytheIKernel,bytheBKernel
43、andbytheapplications. Figure2ContextandstructureoftheapplicationlayercoreEN12834:2003(E) 11 6Transferkernel 6.1General TheTKernelshalltransferinformationbetweentwopeerkernelsorapplications,andshallabstractfromthe realisationofthistransfer. TheTKernelshallofferitsservicesbymeansofserviceprimitivesde
44、finedin6.2. TheTKernelshalltransfertheinformationbymeansofTAPDUsdefinedinannexA. TheTKernelshallrealisethetransferbyaprotocolwiththebehaviourdefinedin6.3. TheTKernelshallusetheservicesoftheLogicalLinkControlsublayeroftheDSRCDataLinkLayer,EN12795. 6.2Services 6.2.1Scope TheTKernelshallprovidethefollowingservices:
