510101970sAnnexesA3GPP协议.docx

510101970sAnnexesA3GPP协议.docx

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510101970sAnnexesA3GPP协议

Annex1（normative）:

Referencetestmethods

A1.1GeneralConditions（GC）

A1.1.1Outdoortestsiteandgeneralarrangementsformeasurementsinvolvingtheuseofradiatedfields（GC4）

Theoutdoortestsiteshallbeonareasonablylevelsurfaceorground.Atonepointonthesiteagroundplaneofatleast5mdiametershallbeprovided.Inthemiddleofthisgroundplaneanon-conductingsupportcapableofrotationthrough360degreesinthehorizontalplaneshallbeusedtosupportthetestsampleat1,5mabovethegroundplane.

Thetestsiteshallbelargeenoughtoallowtheerectionofameasuringortransmittingantennaatadistanceofhalfawavelengthoratleast3mwhicheveristhegreater.Sufficientprecautionsshallbetakentoensurethatreflectionsfromextraneousobjectsadjacenttothesiteandgroundreflectionsdonotdegradethemeasurementresults.

Thetestantennaisusedtodetecttheradiationfromboththetestsampleandthesubstitutionantenna,whenthesiteisusedforradiationmeasurements.Wherenecessarythesubstitutionantennaisusedasatransmittingantenna,whenthesiteisusedforthemeasurementofreceivercharacteristics.Thisantennaismountedonasupportsuchastoallowtheantennatobeusedineitherthehorizontalorverticalpolarizationandfortheheightofitscentreabovegroundtobevariedovertherange1mto4m.Preferablytestantennaswithpronounceddirectivityshouldbeused.Thesizeofthetestantennaalongthemeasurementaxisshallnotexceed20 %ofthemeasuringdistance.

Forradiationmeasurementsthetestantennaisconnectedtoatestreceivercapableofbeingtunedtoanyfrequencyunderinvestigationandofmeasuringaccuratelytherelativelevelsofsignalsatitsinput.Whennecessary（forreceivermeasurements）thetestreceiverisreplacedbyasignalsource.

Thesubstitutionantennashallbeahalfwavedipole,resonantatthefrequencyunderconsideration,orashorteneddipole,or（intherange1GHzto4GHz）ahornradiator.Antennasotherthanahalfwavedipoleshallhavebeencalibratedtothehalfwavedipole.Thecentreofthisantennashallcoincidewiththereferencepointofthetestsampleithasreplaced.Thisreferencepointshallbethevolumecentreofthesamplewhenitsantennaismountedinsidethecabinet,orthepointwhereanexternalantennaisconnectedtothecabinet.Thedistancebetweenthelowerextremityofthedipoleandthegroundshallbeatleast30 cm.

Thesubstitutionantennashallbeconnectedtoacalibratedsignalgeneratorwhenthesiteisusedforradiationmeasurementsandtoacalibratedmeasuringreceiverwhenthesiteisusedformeasurementsofreceivercharacteristics.Thesignalgeneratorandthereceivershallbeoperatingatthefrequenciesunderinvestigationandshallbeconnectedtotheantennathroughsuitablematchingandbalancingnetwork.

A1.1.2Anechoicshieldedchamber（GC5）

Asanalternativetotheabovementionedoutdoortestsiteanindoortestsite,beingawellshieldedanechoicchambersimulatingfreespaceenvironmentmaybeused.Ifsuchachamberisused,thisshallberecordedinthetestreport.

NOTE:

Theanechoicshieldedchamberisthepreferredtestsitefortestingtothepresentdocument.

Themeasurementsitemaybeanelectricallyshieldedanechoicchamberbeing10mlong,5mbroadand5mhigh.WallsandceilingshouldbecoatedwithRFabsorbersof1mheight.Thegroundshouldbecoveredwithabsorbingmaterial1mthickabletocarrytestequipmentandoperators.Ameasuringdistanceof3mto5minthelongmiddleaxisofthechambercanbeusedformeasurementsuptoatleast10GHz.

Thetestantenna,testreceiver,substitutionantennaandcalibratedsignalgeneratorareusedinawaysimilartothatoftheoutdoortestsitemethodwiththeexceptionthat,becausethefloorabsorbersrejectfloorreflections,theantennaheightneednotbechangedandshallbeatthesameheightasthetestsample.Intherangebetween30MHzand100 MHzsomeadditionalcalibrationmaybenecessary.

A1.1.3Temporaryantennaconnector（GC7）

IftheMStobetesteddoesnotnormallyhaveapermanentexternal50connectorthenfortestpurposesonlyitmaybemodifiedtofitatemporary50antennaconnector.

Thepermanentintegralantennashallbeusedformeasurementof:

-Transmittereffectiveradiatedpower（subclause13.3）.

-Radiatedspuriousemissions（clause12）.

FortestsintherelevantMSReceiveband:

-Thetemporaryantennacouplingfactorisdeterminedusingtheproceduredefinedinannex1,subclause1.1.5.Whenusingthetemporaryantennaconnector,thetemporaryantennacouplingfactorneedstobetakenintoconsiderationwhendeterminingastimulusormeasuredlevelinthereceiveband.

FortestsintherelevantMSTransmitband:

-Thetemporaryantennacouplingfactorisdeterminedusingtheproceduredefinedinsubclause13.3.4.2Whenusingthetemporaryantennaconnector,thetemporaryantennacouplingfactorneedstobetakenintoconsiderationwhendeterminingastimulusormeasuredlevelinthetransmitband.

Forfrequenciesoutsidetheabovementionedrelevantbandsthetemporaryantennacouplingfactorisassumedtobe0 dB.

NOTE1:

Theuncertaintyinthedeterminedvalueofthetemporaryantennacouplingfactorisdirectlyrelatedtotheuncertaintyofthefieldstrengthvaluemeasuredinsubclause13.3.4.2stepn）andannex1,subclause 1.1.5.2（approximately±[3dB]）.Bymutualagreement,betweentheMSmanufacturerandthetestingauthority,avalueof0dBforthetemporaryantennacouplingfactorcouldbeused.

NOTE2:

TheaccommodationoftheuncertaintyinthetemporaryantennacouplingfactorintherelevantMSreceivebandforthetestsinclause14isforfurtherstudy.

NOTE3:

TheuncertaintyinthetemporaryantennacouplingfactorintherelevantMStransmitbandcanbeaccommodatedwithappropriateadjustmentofthemeasuredlevelsbytheuncertainty.

TestingmustbeperformedinthefollowingordertoensurethatallthefreefieldmeasurementsareperformedbeforetheMSismodified.

-Subclause12.1.2.

-Annex1,subclauses1.1.5.1and1.1.5.2.

-Subclause13.3.4.2（duringthissteptheMSismodified）.

-Annex1,subclause1.1.5.3.

-Allremainingtestsofclauses12,13,14,15,16,17,18,19,20,21and22.

A1.1.4Temporaryantennaconnectorcharacteristics

Themethodofconnectionofthetemporaryconnectorshallallowsecureandrepeatableconnectionstobemadetothedeviceundertest.

Theantennaconnectorshallpresentanominal50impedanceovertheGSMreceiveandtransmitfrequencyranges.Themaximumlosswithinthefrequencyrange100kHzto12,75GHzshallbelessthan1dB.

Theconnectioncircuitryshallbemaximallybroadbandandshallcontainnonon-linearoractivedevices.

Thecharacteristicsoftheconnectorshallnotbesignificantlyaffectedbytemperaturesintherange-25°to+60°Celsius.

A1.1.5Calibrationofthetemporaryantennaconnector

Forequipmentsfittedwithanintegralantennaandnotprovidedwithapermanentmeansforconnectiontoanexternalantennaacalibrationprocedureisrequiredtoallowsubsequentmeasurementstobeperformedonthetemporaryantennaconnector.

Oncecalibratedthistemporaryantennaconnectorenablesallreceivertestprocedurestobeidenticalforequipmentswithanintegralantennaandforequipmentswithanantennaconnector.

Thecalibrationprocedureshallbecarriedoutatthreefrequencies,namelyanARFCNinthelowmidandhighARFCNranges.Theprocedureconsistsofthreedistinctstagesasfollows:

1）EstablishtheMSantennaradiationpatternforthethreeselectedfrequencies.

2）Calibratethetestrange（oranechoicshieldedchamber）fortheconditionsneededin1）.

3）Determinethetemporaryantennaconnectorcouplingfactor.

A1.1.5.1Antennaradiationpattern

a）TheMSshallbeintheanechoicshieldedchamber,oronanoutdoortestsite,onanisolatedsupportinaverticalpositionatanorientationspecifiedbythemanufacturer.Thispositionisthe0°position.

Atestantenna,connectedtotheSSshallbeintheanechoicshieldedchamber,orontheoutdoortestsite,atadistanceofatleast3mfromtheMS.

b）AcallshallbeoriginatedbytheSStotheMSonafrequencyinthelowARFCNrange.TheMSshallbemadetoanswerthecall.TheSSshallcommandtheMStomaximumtransmitpower.

c）TheSSshall,usingestimatedparametersfortheoutdoortestsiteoranechoicshieldedchamber,setitsoutputlevel"E"[seefigureA1-1togiveanMSreceiverinputlevelofapproximately32 dBμVemf.Thiscorrespondstoafieldstrengthof55,5dBμV/mattheMSposition.ThesignalshallbetheStandardTestSignalC1.

NOTE1:

Theabsolutevalueofthereceivedsignallevelisnotcritical.ThevaluesuggestedhoweverwillensurethattheMSreceiverisoperatingessentiallyerrorfree,yetislowenoughtoavoidanynonlineareffectsinthereceiver.

d）TheSSshallusetheRXLEVmessagefromtheMStodetermineameasureofthereceivedfieldstrength.TheproceduredetailedintheflowchartoffigureA1-1shallnowbefollowed.

FigureA1-1

ThesignallevelfromtheSSthatjustresultsinthetransitionfromRXLEVatoRXLEVbshallberecordedasEi.

NOTE2:

TheactualvaluesofRXLEVaandRXLEVbwillneedtoberecorded,becausethistransitionwillbeusedasthereferencepointforallfurtherstagesofthecalibrationprocedure.

e）Stepd）shallberepeatedaftertheMShasbeenrotatedbyn45°inthehorizontalplane.EnsuringthatthesameRXLEVtransitionisused,thesignallevelsfromtheSSshallberecordedasEin.

f）CalculatetheeffectivemeansignallevelfromtheRMSvalueoftheeightsignallevelsobtainedind）ande）abovebyusin