看LOG學5G(75)--UE的RRC建立過程\o"5G"#5G\o"無線網(wǎng)絡"#無線網(wǎng)絡\o"RRCSETUP"#RRCSETUP終端RRC建立準備初始開機的5G終端(UE)在完成與無線網(wǎng)絡(RAN)下行同步后，正確解碼小區(qū)MIB和SIB消息，測量BRS，選定下行鏈路波束對。終端(UE)向無線網(wǎng)(RAN)發(fā)送RACH前導碼，5G-RAN回復RACH響應；完成終端與網(wǎng)絡的上行同步。一、終端(UE)RRC建立過程根據(jù)業(yè)務或移動性管理需求終端(UE)向5G-RAN發(fā)送RRC連接建立請求。5G-RAN為終端(UE)分配無線資源，回復RRC連接建立。終端(UE)與5G-RAN間建立RRC連接，回復RRC連接建立完成。之后，終端(UE)與5G-RAN間之間將根據(jù)需要進行RRC連接重新配置。

圖1.5G終端(UE)RRCSETUP流程二、無線網(wǎng)絡中RRC建立在無線網(wǎng)絡中的RRC建立請求消息"RRCSetupRequest"消息先由終端(UE)通過空口(Uu)發(fā)送到gNB;在gNB拆分為DU與CU的架構中DU將接收到的“InitialULRRCMessage"傳遞給CU;gNB根據(jù)終端(UE)的RRC建立請求為其分配無線資源，回復”RRCSetup";收到無線資源(承載)后，終端(UE)回復”RRCSetupComplete"消息。

圖2.無線網(wǎng)絡中RRC建立過程

三、終端(UE)RRC建立消息(部分注釋）3.1.rrcSetupRequest（終端RRC建立請求--原因）UuMsg

message

t=c1

t=rrcSetupRequest

rrcSetupRequest

rrcSetupRequest

ue_Identity（UEID)

t=randomValue(隨機接入碼）

u

randomValue(隨機接入碼）

numbits=39（(隨機接入碼:39bits）data=000101101000001101010010111001100001110(BIT)establishmentCause=3:EstablishmentCause_Root_mo_Signalling(建立原因:3--mo信令)

spare

numbits=1

data=0(BIT)3.2RRCSetup(網(wǎng)絡RRC建立--無線資源分配）UuMsg

message

t=c1

t=rrcSetup

u

rrcSetup

rrc_TransactionIdentifier=0（RRC傳輸ID:0)

criticalExtensions

t=rrcSetup

tOptFlags

lateNonCriticalExtensionPresent=0

nonCriticalExtensionPresent=0

radioBearerConfig

tOptFlags

srb_ToAddModListPresent=1(SRB新增修改=是）

srb3_ToReleasePresent=0

drb_ToAddModListPresent=0

drb_ToReleaseListPresent=0

securityConfigPresent=0

srb_ToAddModList(SRB新增修改列表）

n=1

elem[0]

tOptFlags

reestablishPDCPPresent=0

discardOnPDCPPresent=0

pdcp_ConfigPresent=1（PDCP層配置=是）

srb_Identity=1（SRBID=1)

pdcp_Config（PDCP層配置)

tOptFlags

drbPresent=0

moreThanOneRLCPresent=0

t_ReorderingPresent=1(重組配置=是）

verExt2Present=0

t_Reordering=31:PDCP_Config_t_Reordering_Root_ms2000(PDCP重組配置:2000ms）

masterCellGroup

tOptFlags

rlc_BearerToAddModListPresent=1(RLC承載新增修改列表=是）

rlc_BearerToReleaseListPresent=0

mac_CellGroupConfigPresent=1(MAC層小區(qū)組配置=是）

physicalCellGroupConfigPresent=0

spCellConfigPresent=1（SP小區(qū)配置=是）

sCellToAddModListPresent=0

sCellToReleaseListPresent=0

verExt2Present=0

cellGroupId=0

rlc_BearerToAddModList(RLC承載新增修改列表）

n=1

elem[0]

tOptFlags

servedRadioBearerPresent=1（無線承載=是）

reestablishRLCPresent=0

rlc_ConfigPresent=1(RLC層配置=是）

mac_LogicalChannelConfigPresent=1（MAC層邏輯信道配置=是）

logicalChannelIdentity=1（邏輯信道ID=1)

servedRadioBearer

t=srb_Identity

srb_Identity=1(SRBID=1)

rlc_Config(RLC層配置)

t=am(傳輸模式=AM)

u

am

ul_AM_RLC(上行RLCAM配置）

tOptFlags

sn_FieldLengthPresent=1sn_FieldLength=0:SN_FieldLengthAM_Root_size12t_PollRetransmit=8:T_PollRetransmit_Root_ms45pollPDU=4:PollPDU_Root_p64

pollByte=8:PollByte_Root_kB75maxRetxThreshold=6:UL_AM_RLC_maxRetxThreshold_Root_t16

dl_AM_RLC(下行RLCAM配置）

tOptFlags

sn_FieldLengthPresent=1sn_FieldLength=0:SN_FieldLengthAM_Root_size12

t_Reassembly=8:T_Reassembly_Root_ms40

t_StatusProhibit=2:T_StatusProhibit_Root_ms10

mac_LogicalChannelConfig（MAC層邏輯信道配置）

tOptFlags

ul_SpecificParametersPresent=1

ul_SpecificParameters

tOptFlags

allowedServingCellsPresent=0

allowedSCS_ListPresent=0

maxPUSCH_DurationPresent=0

configuredGrantType1AllowedPresent=0

logicalChannelGroupPresent=1

schedulingRequestIDPresent=1

bitRateQueryProhibitTimerPresent=0

priority=1prioritisedBitRate=15:LogicalChannelConfig_ul_SpecificParameters_prioritisedBitRate_Root_infinitybucketSizeDuration=7:LogicalChannelConfig_ul_SpecificParameters_bucketSizeDuration_Root_ms500

logicalChannelGroup=0

schedulingRequestID=0

logicalChannelSR_Mask=FALSE

logicalChannelSR_DelayTimerApplied=FALSE

mac_CellGroupConfig

tOptFlags

drx_ConfigPresent=0

schedulingRequestConfigPresent=1

bsr_ConfigPresent=1

tag_ConfigPresent=1

phr_ConfigPresent=1

verExt2Present=0

schedulingRequestConfig（SR配置）

tOptFlags

schedulingRequestToAddModListPresent=1

schedulingRequestToReleaseListPresent=0

schedulingRequestToAddModList

n=1

elem[0]

tOptFlags

sr_ProhibitTimerPresent=1

schedulingRequestId=0sr_ProhibitTimer=3:SchedulingRequestToAddMod_sr_ProhibitTimer_Root_ms8sr_TransMax=4:SchedulingRequestToAddMod_sr_TransMax_Root_n64

bsr_Config（BSR配置）

tOptFlags

logicalChannelSR_DelayTimerPresent=0periodicBSR_Timer=1:BSR_Config_periodicBSR_Timer_Root_sf5retxBSR_Timer=5:BSR_Config_retxBSR_Timer_Root_sf320

tag_Config(TAG配置）

tOptFlags

tag_ToReleaseListPresent=0

tag_ToAddModListPresent=1

tag_ToAddModList

n=1

elem[0]

tag_Id=0timeAlignmentTimer=7:TimeAlignmentTimer_Root_infinity

phr_Config(PHR配置）

t=setup

u

setupphr_PeriodicTimer=3:PHR_Config_phr_PeriodicTimer_Root_sf100

phr_ProhibitTimer=1:PHR_Config_phr_ProhibitTimer_Root_sf10phr_Tx_PowerFactorChange=1:PHR_Config_phr_Tx_PowerFactorChange_Root_dB3

multiplePHR=FALSE

dummy=FALSE

phr_Type2OtherCell=FALSE

phr_ModeOtherCG=0:PHR_Config_phr_ModeOtherCG_Root_real

skipUplinkTxDynamic=FALSE

spCellConfig

tOptFlags

servCellIndexPresent=0

reconfigurationWithSyncPresent=0

rlf_TimersAndConstantsPresent=0

rlmInSyncOutOfSyncThresholdPresent=0

spCellConfigDedicatedPresent=1

spCellConfigDedicated

tOptFlags

tdd_UL_DL_ConfigurationDedicatedPresent=0

initialDownlinkBWPPresent=0

downlinkBWP_ToReleaseListPresent=0

downlinkBWP_ToAddModListPresent=0

firstActiveDownlinkBWP_IdPresent=0

bwp_InactivityTimerPresent=0

defaultDownlinkBWP_IdPresent=0

uplinkConfigPresent=1

supplementaryUplinkPresent=0

pdcch_ServingCellConfigPresent=0

pdsch_ServingCellConfigPresent=0

csi_MeasConfigPresent=0

sCellDeactivationTimerPresent=0

crossCarrierSchedulingConfigPresent=0

dummyPresent=0

pathlossReferenceLinkingPresent=0

servingCellMOPresent=0

verExt2Present=0

verExt3Present=0

uplinkConfig（上行配置）

tOptFlags

initialUplinkBWPPresent=1

uplinkBWP_ToReleaseListPresent=0

uplinkBWP_ToAddModListPresent=0

firstActiveUplinkBWP_IdPresent=0

pusch_ServingCellConfigPresent=0

carrierSwitchingPresent=0

verExt2Present=0

verExt3Present=0

initialUplinkBWP（初始上行BWP)

tOptFlags

pucch_ConfigPresent=1

pusch_ConfigPresent=1

configuredGrantConfigPresent=0

srs_ConfigPresent=0

beamFailureRecoveryConfigPresent=0

pucch_Config(PUCCH配置）

t=setup

tOptFlags

resourceSetToAddModListPresent=0

resourceSetToReleaseListPresent=0

resourceToAddModListPresent=1

resourceToReleaseListPresent=0

format1Present=1

format2Present=0

format3Present=0

format4Present=0

schedulingRequestResourceToAddModListPresent=1

schedulingRequestResourceToReleaseListPresent=0

multi_CSI_PUCCH_ResourceListPresent=0

dl_DataToUL_ACKPresent=0

spatialRelationInfoToAddModListPresent=0

spatialRelationInfoToReleaseListPresent=0

pucch_PowerControlPresent=0

verExt2Present=0

resourceToAddModList

n=1

elem[0]

tOptFlags

intraSlotFrequencyHoppingPresent=0

secondHopPRBPresent=0

pucch_ResourceId=16

startingPRB=13

format

t=format1

initialCyclicShift=11

nrofSymbols=14

startingSymbolIndex=0

timeDomainOCC=6

format1

t=setup

tOptFlags

interslotFrequencyHoppingPresent=0

additionalDMRSPresent=0

maxCodeRatePresent=0

nrofSlotsPresent=0

pi2BPSKPresent=0

simultaneousHARQ_ACK_CSIPresent=0

schedulingRequestResourceToAddModList

n=1

elem[0]

tOptFlags

periodicityAndOffsetPresent=1

resourcePresent=1

schedulingRequestResourceId=1

schedulingRequestID=0

periodicityAndOffset

t=sl10

u

sl10=8

resource=16

pusch_Config（PUSCH配置）

t=setup

tOptFlags

dataScramblingIdentityPUSCHPresent=0

txConfigPresent=0

dmrs_UplinkForPUSCH_MappingTypeAPresent=0

dmrs_UplinkForPUSCH_MappingTypeBPresent=0

pusch_PowerControlPresent=0

frequencyHoppingPresent=0

frequencyHoppingOffsetListsPresent=0

pusch_TimeDomainAllocationListPresent=0

pusch_AggregationFactorPresent=0

mcs_TablePresent=0

mcs_TableTransformPrecoderPresent=0

transformPrecoderPresent=0

codebookSubsetPresent=0

maxRankPresent=0

rbg_SizePresent=0

uci_OnPUSCHPresent=1

tp_pi2BPSKPresent=0resourceAllocation=1:PUSCH_Config_resourceAllocation_Root_resourceAllocationType1

uci_OnPUSCH（PUSCH中UCI）

t=setup

tOptFlags

betaOffsetsPresent=1

betaOffsets

t=semiStatic

u

semiStatic

tOptFlags

betaOffsetACK_Index1Present=1

betaOffsetACK_Index2Present=1

betaOffsetACK_Index3Present=1

betaOffsetCSI_Part1_Index1Present=1

betaOffsetCSI_Part1_Index2Present=1

betaOffsetCSI_Part2_Index1Present=1

betaOffsetCSI_Part2_Index2Present=1

betaOffsetACK_Index1=9

betaOffsetACK_Index2=7

betaOffsetACK_Index3=7

betaOffsetCSI_Part1_Index1=14

betaOffsetCSI_Part1_Index2=14

betaOffsetCSI_Part2_Index1=14

betaOffsetCSI_Part2_Index2=14

scaling=0:UCI_OnPUSCH_scaling_Root_f0p5

tag_Id=03.rrcSetupComplete(終端RRCSetup消息接收完成)請參看log學5G(45)--RRC

Setup

Complete中有些啥？

OriginalUuMsg

message

t=c1

t=rrcSetupComplete

u

rrcSetupComplete

rrc_TransactionIdentifier=0

criticalExtensions

t=rrcSetupComplete

rrcSetupComplete

tOptFlags

registeredAMFPresent=1（AMF注冊=是）

guami_TypePresent=1（GUAMI類型=是）

s_NSSAI_ListPresent=0

ng_5G_S_TMSI_ValuePresent=0

lateNonCriticalExtensionPresent=0

nonCriticalExtensionPresent=0

selectedPLMN_Identity=1（PLMN選擇ID=是）

registeredAMF

tOptFlags

plmn_IdentityPresent=0

amf_Identifier（AMFID)

numbits=24(AMFID比特=24）

data=080008(HEX)（AMFID-十六進制）

guami_Type=0:RRCSetupComplete_IEs_guami_Type_Root_native

dedicatedNAS_Message（專用NAS消息）

nocts=78

data=ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff(HEX)4.F1

InitialULRRCMessageTransfer(F1接口DU向CU傳遞的RRC消息）F1apMsg

t=initiatingMessage

u

initiatingMessage

procedureCode=pInitialULRRCMessageTransfer(初始上行RRC信息）

union_value

pInitialULRRCMessageTransfer

protocolIEs

tOptFlags

dUtoCURRCContainerPresent=1

sULAccessIndicationPresent=0

udtTraceInformationPresent=0

privateInfoContainerPresent=1

gNB_DU_UE_F1AP_ID=2483（

gNB_DU_UE_F1的ID=2483)

nRCGI(小區(qū)的CGI)

tOptFlags

iE_ExtensionsPresent=0

pLMN_Identity(PLMNID)

nocts=3

data=64f000(HEX)

nRCellIdentity(NRCELLID)

numbits=36

data=101100000111000001010110000001110001(BIT)

c_RNTI=2884(終端的C_RNTI:2884)

rRCContainer(RRC容器--內(nèi)容）

nocts=6

data=1168352e61c6(HEX)

message

t=c1

t=rrcSetupRequest

rrcSetupRequest

ue_Identity(UEID)