3GPPGSM 测试标准.docx
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3GPPGSM 测试标准.docx
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3GPPGSM测试标准
26.6.4Testofthechannelassignmentprocedure
Anintracellchangeofchannelcanberequestedbyupperlayersinordertochangethechanneltype,oritmaybeinitiatedbytheRR-sublayer,e.g.foranintracellhandover.Thischangeisperformedusingthechannelassignmentprocedure.IftheprocedureisincorrectlyimplementedintheMS,theestablishmentandmaintenanceofconnectionsisendangered.Thisappliesforthesuccessfulcaseandfortheassignmentfailure:
theMS'scorrectreturntotheoldchannelafterassignmentfailureisanecessarypartoftheGSMsystemdesign.
26.6.4.1Dedicatedassignment/successfulcase
26.6.4.1.1Conformancerequirements
1.UponreceiptoftheASSIGNMENTCOMMANDmessage,themobilestationinitiatesalocalendreleaseoflinklayerconnections,disconnectsthephysicalchannels,commandstheswitchingtotheassignedchannelsandinitiatestheestablishmentoflowerlayerconnections(thisincludestheactivationofthechannels,theirconnectionandtheestablishmentofthemainsignallinglinks).
2.MM-messagesandCM-messagesusingSAPI=0sentfromthemobilestationtothenetworkcanbeduplicatedbythedatalinklayerinthefollowingcase:
-achannelchangeofdedicatedchannelsisrequired(assignmentorhandoverprocedure)andthelastlayer2framehasnotbeenacknowledgedbythepeerdatalinklayerbeforethemobilestationleavestheoldchannel.
Inthiscase,themobilestationdoesnotknowwhetherthenetworkhasreceivedthemessagecorrectly.Therefore,themobilestationhastosendthemessageagainafterthenewdedicatedchannelisestablished.
3.AnASSIGNMENTCOMMANDmessagemayindicateafrequencychangeinprogress,withastartingtimeandpossiblyalternativechanneldescriptions.
InthecaseofthereceptionofanASSIGNMENTCOMMANDmessagewhichcontainsonlythedescriptionofachanneltobeusedafterthestartingtime,andifthestartingtimehasnotalreadyelapsed,themobilestationshallwaituptothestartingtimebeforeaccessingthechannel.
4.TheMSshallestablishthelinkwiththepowerlevelspecifiedintheASSIGNMENTCOMMANDmessage.
TheMSshallconfirmthepowercontrollevelthatitiscurrentlyemployingintheuplinkSACCHL1header.TheindicatedvalueshallbethepowercontrollevelactuallyusedbythemobileforthelastburstofthepreviousSACCHperiod.
5.TheMSshallapplythehoppingfrequenciesspecifiedinASSIGNMENTCOMMANDmessageintheMobileAllocationIEortheFrequencyListIEatthetimeofaccessingthenewchannelusingthelastreceivedCellAllocation.
6.AfterreceiptoftheASSIGNMENTCOMMANDtheMSshallperformtheassignmentandreturnanASSIGNMENTCOMPLETEwithoutunduedelay.
References
1,3,5.3GPP TS 04.08/3GPP TS 44.018,subclause3.4.3.
2.3GPP TS 04.08/3GPP TS 44.018,subclause3.1.4.3.
4.3GPP TS 04.08/3GPP TS 44.018,subclause3.4.3;3GPP TS 05.08,subclause4.2.
6.3GPP TS 04.13,subclause5.2.4.
26.6.4.1.2Testpurpose
1.ToverifythatuponreceiptofanASSIGNMENTCOMMAND,theMSswitchestothechanneldefinedintheASSIGNMENTCOMMAND,establishesthelinkandsendsanASSIGNMENTCOMPLETEmessage.ThisistestedforanMSsupportingTCHinthespecialcasesofatransition.
1.1fromnon-hoppingSDCCHtohoppingTCH/Fusingadifferenttimeslot;
1.2fromhoppingTCH/Ftonon-hoppingTCH/Fusingadifferenttimeslot;
1.3fromnon-hoppingTCH/Ftonon-hoppingTCH/Fusingadifferenttimeslot;
1.4fromnon-hoppingTCH/FtohoppingTCH/Husingadifferenttimeslot;thistestpurposeisonlyapplicableiftheMSsupportsTCH/H;
1.5fromhoppingTCH/Htonon-hoppingTCH/Husingadifferenttimeslot;thistestpurposeisonlyapplicableiftheMSsupportsTCH/H;
1.6fromnon-hoppingTCH/HtohoppingTCH/Fusingadifferenttimeslot;thistestpurposeisonlyapplicableiftheMSsupportsTCH/H.
2.ToverifythatanMSsupportingTCH,havingsentanMM-orCMmessagewhichwasnotacknowledgedonL2beforethechannelassignmentprocedurewasinitiatedandbeforetheMShaslefttheoldchannel,repeatsthatmessageaftercompletionoftheassignmentprocedurewithoutincrementingN(SD).ThisistestedinthespecialcaseofMMmessageAUTHENTICATIONRESPONSE.
3.Toverifythat,ifanMSsupportingTCHhasreceivedanASSIGNMENTCOMMANDmessagewhichcontainsonlythedescriptionofachanneltobeusedafterthestartingtime,andifthestartingtimehasnotalreadyelapsed,themobilestationshallwaituptothestartingtimebeforeaccessingthechannel.
4.ToverifythatanMSsupportingTCH,havingreceivedanASSIGNMENTCOMMAND,havingsentanSABMframetoestablishthemainsignallinglinkontheassignedchannel,reportsthepowerlevelspecifiedintheASSIGNMENTCOMMANDmessage,intheuplinkSACCHL1headeroftheSACCHmessagesentintheSACCHperiodfollowingthetransmissionoftheSABMframe.
5.ToverifythatanMSsupportingTCH,havingreceivedanASSIGNMENTCOMMAND,isableinthecaseoffrequencyhoppingtodecodetheMobileAllocationandFrequencyListIEscorrectlyandappliesthespecifiedfrequenciesusingthecorrectCellAllocation.
6.ToverifythatafterreceiptoftheASSIGNMENTCOMMANDtheMSreturnsanASSIGNMENTCOMPLETEwithoutunduedelay.
26.6.4.1.3Methodoftest
InitialConditions
SystemSimulator:
1cell,defaultparametersexcept:
BCCHARFCN
Throughoutthetest,theCAbroadcastinSystemInformation1is
GSM 450
263
259,261,263,265,267,269,271,273,275,277
GSM 480
310
306,308,310,312,314,316,318,320,322,324
GSM710
457
447,454,457,463,471,479,482,483,489,496
GSM750
457
447,454,457,463,471,479,482,483,489,496
T-GSM810
457
447,454,457,463,471,479,482,483,489,496
GSM850
147
137,144,147,153,161,169,172,173,179,186
GSM900
20
10,17,20,26,34,42,45,46,52,59
DCS1800
747
734,741,747,754,759,766,773,775,779,782
PCS1900
647
634,641,647,654,659,666,673,675,679,682
NotethattheactualCAofthecellcontainsotherfrequencies.
MobileStation:
TheMSisinthe"idle,updated"statewithaTMSIallocated.
SpecificPICSstatements
-MSsupportsGSMHR(TSPC_AddInfo_Halfrate)
PIXITstatements
-
ForeseenFinalStateoftheMS
"Idle,updated",withTMSIallocated.
TestProcedure
TheSSpagestheMSandallocatesanSDCCH.Then2differentchannelsareassignedwithASSIGNMENTCOMMANDs.EachtimetheMSshallswitchtotheassignedchannel,establishthelinkandsendanASSIGNMENTCOMPLETEmessage.
ThentheSSsendsaAUTHENTICATIONREQUESTmessage.TheMSshallanswerwithanAUTHENTICATIONRESPONSEmessage,whichisnotacknowledgedonL2bytheSS.ImmediatelyaftertheAUTHENTICATIONRESPONSEmessageisreceived,theSSsendsanASSIGNMENTCOMMAND.TheMSshallswitchtotheassignedchannel,establishthelinkwiththecommandedpowerlevelandsendasASSIGNMENTCOMPLETEmessage.ThenMSshallrepeattheAUTHENTICATIONRESPONSEmessage,withthesameN(SD)value.
ThentheSSsendsanASSIGNMENTCOMMAND,whichincludesaStartingTimeIE.TheMSshallreactasspecifiedabove,butthisshallbedoneatthetimespecifiedinStartingTimeIE.
ForanMSnotsupportingTCH/H,theSSinitiatesthechannelreleaseprocedureandthetestendshere.ForanMSsupportingTCH/H,thechannelassignmentprocedureisperformedanotherthreetimes,withhalfratechannelsinvolved,andagainitischeckedthattheMScorrectlycompletestheprocedures,beforetheSSinitiatesthechannelreleaseprocedure.
MaximumDurationofTest
30s.
ExpectedSequence
NOTE:
3GPPTS04.08/3GPP TS 44.018appearstobeunclearastowhethertimerT3240shallorshallnotbestartedasaresultoftheAUTHENTICATIONREQUESTmessagesentinstep10.Toallowavarietyoftestequipmentimplementations,theIDENTITYREQUESTmessageisincludedinordertoavoidanunexpectedexpiryoftimerT3240priortotheendoftheexpectedsequence.
Step
Direction
Message
Comments
1
SS->MS
PAGINGREQUESTTYPE1
2
MS->SS
CHANNELREQUEST
3
SS->MS
IMMEDIATEASSIGNMENT
Seespecificmessagecontents.
4
MS->SS
PAGINGRESPONSE
5
SS->MS
ASSIGNMENTCOMMAND
Seespecificmessagecontents.
6
MS->SS
ASSIGNMENTCOMPLETE
Sentonthecorrectchannelafterestablishmentofthemainsignallinglink.Thismessageshallbereadytobetransmittedbefore600msafterthecompletionofstep5.
7
SS
TheSSchecksthattheMSreportstherequestedpowerlevelinthelayer1headeroftheSACCHmessagethatissentinthefirstSACCHmultiframefollowingtheSABM.
8
SS->MS
ASSIGNMENTCOMMAND
Seespecificmessagecontents.
9
MS->SS
ASSIGNMENTCOMPLETE
Sentonthecorrectchannelafterestablishmentofthemainsignallinglink.Thismessageshallbereadytobetransmittedbefore600msafterthecompletionofstep8.
10
SS->MS
AUTHENTICATIONREQUEST
11
MS->SS
AUTHENTICATIONRESPONSE
ThismessageisnotL2acknowledgedbytheSS.
12
SS->MS
ASSIGNMENTCOMMAND
Seespecificmessagecontents.
13
MS->SS
ASSIGNMENTCOMPLETE
Sentonthecorrectchannelafterestablishmentofthemainsignallinglink.Thismessageshallbereadytobetransmittedbefore600msafterthecompletionofstep12.
14
MS->SS
AUTHENTICATIONRESPONSE
N(SD)shallbethesameasinstep10.
15
SS->MS
IDENTITYREQUEST
16
MS->SS
IDENTITYRESPONSE
17
SS->MS
ASSIGNMENTCOMMAND
Seespecificmessagecontents.
18
SS
TheSSchecksthatthereisnoradiotransmissiononthenewchannelbeforethestartingtime.
19
MS->SS
ASSIGNMENTCOMPLETE
Sentonthecorrectchannelafterestablishmentofthemainsignallinglink.
A
ThistestpartisperformediftheMSdoesnotsupportTCH/H(seePICS).
A20
SS->MS
CH
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