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HunanModernLogisticsCollegePresenter:MiZhiqiangAnalysisofUHFRFIDTagDataStructureReservedmemoryUsermemory12ContentsTIDmemory3EPCmemory300IntroductionUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureTagmemoryTagmemoryshouldbelogicallydividedintofourmemorybanks,eachofwhichcanbecomposedofoneormorememorybytes.01ReservedmemoryReservedmemorycontainkill

password

andaccesspassword.

Thekill

passwordshouldbestoredinthestoragelocationfrom00hto1Fn.Andtheaccesspasswordshouldbestoredinthestorageaddressfrom20hto3Fn.Iftagdoesnotexecuteankilland/oraccesspassword,thetagstillworks,andthereisnoneedtohaveastoragelocationinthereservedmemory,regardlessofwhetherthetaghaszeroedoutthepasswordthatcannotberead/writtenpermanentlylocked.TIDmemoryTheTIDmemoryshouldcontain8-bitISO15963allocationclassidentificationfor00hto07nstoragelocations(111000102forEPCglobal),12-bittaskmaskdesignidentificationfor08hto13nstoragelocations(freeforEPCglobalmembers),and14hto1FnstoragelocationsGB/T××××—××××29UnderstandingRFID--AnalysisofUHFRFIDtagdatastructure03UsermemoryUsermemoryallowsstorageofuser-specifieddata.Thememoryorganizationisuserdefined.Thelogicaladdressingofallstorageunitsstartsatzero(00h).Thephysicalmemorymapisspecifiedfortheprovider.ThecommandstoaccessthestorageincludeselectingtheMemBankparametersofthestorageandspecifyingtheaddressparametersofthespecificstoragelocationinthestorageusingtheEBVformatdescribedinAppendixA.Iftagbackscatteringstorescontent,thebackscatteringshouldfallonthewordboundaries(exceptfortruncatedresponses).ThedefinitionofMemBankisasfollows:002ReservedMemory012EPCMemory102TIDMemory112UserMemoryOperationsinonelogicalstoreshouldnotaccessstoragelocationsinanother.UnderstandingRFID--AnalysisofUHFRFIDtagdatastructure04EPCmemoryTheEPCmemoryshouldcontaincrc-16at00hto1Fnstoragelocations,theprotocol-control(PC)at10hto1Fhstoragelocations,andtheEPCstartingat20h.Asdescribedin6.3.2.1.4,PCisdividedintoEPClengthat10hto14Fhstoragelocation,RFUbitat15hto17FhstoragelocationandNSIat18hto1Fhstoragelocation.Crc-16,PCandEPCshouldgiveprioritytoMSBstorage(MSBofEPCshouldbestoredat20hstoragelocation).UnderstandingRFID--AnalysisofUHFRFIDtagdatastructureEPC(ElectronicProductCode)AnidentifierUniquenumberAkeytounlocknetworkinformation04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureElectronicProductCodeIt'stheIDnumberoftheobject.Aseriesofstructurednumbersusedtoidentifytangibleandintangibleobjectssuchasgoods,locations,services,assets,etc.Inadditiontostoringidentificationcodes,higher-leveltagscanstoreuser-definedinformation.EPCcodingisunique,inclusiveandextensibleintheworld.Itcancoverexistingcodingschemesaswellasnewnumbers.04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureEPC--------FlexibilityCurrentlysupportsthefollowing:SGTIN(GlobalTradeItemNumber) GIAI(GlobalIndividualAssetIdentifier)SSCC(SerializedShippingContainerCode) GRAI(GlobalReusableAssetIdentifier)SGLN(GlobalLocationNumber) US/DoD-CAGENDC(NationalDrugCode)

Futuresupportforothers,suchasVIN(VehicleIdentificationNumber)04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureTheRoleofEPCs04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureElectronicProductCodeElectronicProductCode………inaTag04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructure04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureObjectUniquenessCoding：EPC

HeaderFilterandPartitionValueDomainIdentifierEPCorEPCIdentifiere.g.SGTIN,SGLN,SSCCStandardEPCTagEncoding

SGTINSSCC

SGLNGRAIGIAIDOD04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructure04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructure268millioncompanies16millionitems68billionsingleitemsGeneralIdentifier(GID-96bits)04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureAVariablelength

2bitsor8bits00isinvalidEPCEncoding-Header04EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureHeaderHeaderValue(Binary)HeaderValue(Hex)CodinglengthCodingtype001011112F96bitsDoD-96001100003096bitsSGTIN-96001100013196bitsSSCC-96001100103296bitsSGLN-96001100113396bitsGRAI-96001101003496bitsGIAI-96001101013596bitsGID-960011011036198bitsSGTIN-1980011011137170bitsGRAI-1700011100038202bitsGIAI-2020011100139195bitsSGLN-19504EPCmemoryUnderstandingRFID--AnalysisofUHFRFIDtagdatastructureTheRepresentationofEPCurn:epc:id:sgtin:0037000.112345.400urn:epc:id:sgtin:0037000.112345.400sgtin:Header8bits00110000FilterValue3bits0115Partition3bits1010037000CompanyPrefix20-40bits0000100101011110111111234ItemReference24

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