看LOG學(xué)4G(19)-切換請(qǐng)求消息注解

看LOG學(xué)4G(19)--切換請(qǐng)求消息(注解）\o"4G"#4G\o"無(wú)線網(wǎng)絡(luò)"#無(wú)線網(wǎng)絡(luò)\o"RRC"#RRC\o"handover"#handover一、4G網(wǎng)絡(luò)切換流程處于RRC連接狀態(tài)的終端(UE)向相鄰小區(qū)移動(dòng)時(shí)，UE會(huì)話從服務(wù)小區(qū)轉(zhuǎn)移到另一個(gè)服務(wù)小區(qū)，最終與新eNodeB建立新連接。切換首先由服務(wù)eNodeB根據(jù)終端(UE)周期性上報(bào)的RRC測(cè)量報(bào)告來(lái)確定是否發(fā)起切換過(guò)程。當(dāng)選定目標(biāo)小區(qū)進(jìn)行切換決策時(shí)，服務(wù)小區(qū)eNB還從其鄰區(qū)列表和切換類型(即X2或S1切換)中選擇目標(biāo)eNodeB小區(qū)。如與目標(biāo)eNodeB的X2鏈路已建立且可用，則執(zhí)行X2切換，否則執(zhí)行S1切換。切換過(guò)程中服務(wù)eNodeB通過(guò)X2鏈路向目標(biāo)eNodeB發(fā)送切換請(qǐng)求(HandoverRequest)；當(dāng)目標(biāo)eNodeB接納終端切入時(shí)回送“HandoverRequestAcknowledge”消息；收到允許切換消息后，服務(wù)eNodeB再通過(guò)包含“TargetCell"的RRC重配置消息通知終端(UE)執(zhí)行切換。切換流程如下圖所示：圖1.4G網(wǎng)絡(luò)內(nèi)部切換流程二、切換請(qǐng)求消息(Handover

Request)是由服務(wù)eNodeB通過(guò)X2鏈路向目標(biāo)eNodeB發(fā)送請(qǐng)求消息，其中包括終端(UE)在服務(wù)eNodeB中X2ID,切換原因，目標(biāo)小區(qū)的PLMN和ID，終端在目標(biāo)小區(qū)中eRAB建立以及RRC內(nèi)容。消息結(jié)構(gòu)如下：圖2.4G網(wǎng)絡(luò)中切換請(qǐng)求內(nèi)容三、切換請(qǐng)求實(shí)例(部分注釋)無(wú)線網(wǎng)絡(luò)中做為目標(biāo)小區(qū)切換請(qǐng)求是終端切入的第一條消息，只有允許切換入才回復(fù)“HandoverRequestAcknowledge”消息，否則將回復(fù)“HandoverRequestReject"。

圖3.4G網(wǎng)絡(luò)中切換入和切換出請(qǐng)求3.1HandoverRequest消息實(shí)例X2apMsg

t=1

u

initiatingMessage

ProcCode=0:X2AP_id_handoverPreparation

HandoverRequest（切換請(qǐng)求）

protocolIEs

tOptFlags

traceActivationPresent=0

sRVCCOperationPossiblePresent=0

cSGMembershipStatusPresent=0

mobilityInformationPresent=0

call_Record_UE_IdPresent=1（UE通信記錄ID=是）

ue_S_TMSI_Info_IdPresent=0

reest_SrcCell_InfoPresent=0

Special_UePresent=0

old_eNB_UE_X2AP_ID=564（UE原eNB中X2AP

ID=564)

cause(原因）

t=1

uradioNetwork=0:TX2AP_CauseRadioNetwork_Root_handover_desirable_for_radio_reasons(無(wú)線原因）

targetCell_ID（目標(biāo)小區(qū)ID)

tOptFlags

iE_ExtensionsPresent=0

pLMN_Identity(PLMNID)

nocts=3

data=64f011(HEX)

eUTRANcellIdentifier(eUTRAN小區(qū)ID)

numbits=28

data=0101111000100000001110010001(BIT)

gUMMEI_ID(終端gUMMEI）

tOptFla過(guò)

iE_ExtensionsPresent=0

gU_Group_ID

tOptFlags

iE_ExtensionsPresent=0

pLMN_Identity（PLMNID)

nocts=3

data=64f011(HEX)

mME_Group_ID

nocts=2

data=3700(HEX)

mME_Code

nocts=1

data=03(HEX)

uE_ContextInformation(UE上下文信息）

tOptFlags

subscriberProfileIDforRFPPresent=0

handoverRestrictionListPresent=0

locationReportingInformationPresent=0

iE_ExtensionsPresent=0

mME_UE_S1AP_ID=2785058307

uESecurityCapabilities

tOptFlags

iE_ExtensionsPresent=0

encryptionAlgorithms

numbits=16

data=e000(HEX)

integrityProtectionAlgorithms

numbits=16

data=e000(HEX)

aS_SecurityInformation

tOptFlags

iE_ExtensionsPresent=

key_eNodeB_star

numbits=256

data=d1aa471920ff3e6873507ae5c8057395fd994bb06ac8cdb6bfbc606c5a396206(HEX)

nextHopChainingCount=3

uEaggregateMaximumBitRate（終端聚合最大速率）

tOptFlags

iE_ExtensionsPresent=0

uEaggregateMaximumBitRateDownlink=300000000

uEaggregateMaximumBitRateUplink=400000000

e_RABs_ToBeSetup_List（eRAB建立列表）

n=1

elem[0]

tOptFlags

dL_ForwardingPresent=1

iE_ExtensionsPresent=0

e_RAB_ID=5

e_RAB_Level_QoS_Parameters（

e_RAB的QOS參數(shù)）

tOptFlags

gbrQosInformationPresent=0

iE_ExtensionsPresent=0

qCI=9

allocationAndRetentionPriority

tOptFlags

iE_ExtensionsPresent=0

priorityLevel=15（優(yōu)先級(jí)=15）pre_emptionCapability=0:TX2AP_Pre_emptionCapability_Root_shall_not_trigger_pre_emption（預(yù)清空能力=0--不啟用）pre_emptionVulnerability=1:TX2AP_Pre_emptionVulnerability_Root_pre_emptabledL_Forwarding=0:TX2AP_DL_Forwarding_Root_dL_forwardingProposed

uL_GTPtunnelEndpoint（上行GTP端點(diǎn)）

tOptFlags

iE_ExtensionsPresent=0

transportLayerAddress（傳輸層地址）

numbits=32

data=061c017c(HEX)

gTP_TEID

（GTP地址）

nocts=4

data=5dbb0b2f(HEX)

rRC_Context

（RRC報(bào)文）

nocts=314

data=0b204fc9980061012500a13270d1bf83c6fe0f1bf8.......

240957800482337b42(HEX)

HandoverPreparationInformation（切換準(zhǔn)備信息）

criticalExtensions

t=1

u

c1

handoverPreparationInformation_r8（切換準(zhǔn)備信息-R8）

tOptFlags

as_ConfigPresent=1（接入配置=是）

rrm_ConfigPresent=0

as_ContextPresent=1（接入上下文=是）

nonCriticalExtensionPresent=1

ue_RadioAccessCapabilityInfo（UE無(wú)線接入能力）

n=2

elem[0]

rat_Type=0:RAT_Type_Root_eutra（無(wú)線網(wǎng)絡(luò)類型：EUTRA)

ueCapabilityRAT_Container(UE無(wú)線能力容器）

nocts=79

data=c9980061012500a13270d1bf83c6fe0f1bf83c6fe0f1bf83c6fe0f1bf83bf07fc6f030000004500e2fc00000000e03f0ffc6f08000000384fc1ff1bc000000001540000000f0880000000440000000(HEX)

UE_EUTRA_Capability（終端EUTRA無(wú)線能力)

tOptFlags

featureGroupIndicatorsPresent=1

nonCriticalExtensionPresent=1

accessStratumRelease=2:AccessStratumRelease_Root_rel10

ue_Category=4（UE能力等級(jí)：4）

pdcp_Parameters（PDCP層參數(shù)）

supportedROHC_Profiles（ROHC-頭壓縮支持）

profile0x0001=TRUE

profile0x0002=TRUE

profile0x0003=FALSE

profile0x0004=FALSE

profile0x0006=FALSE

profile0x0101=FALSE

profile0x0102=FALSE

profile0x0103=FALSE

profile0x0104=FALSE

maxNumberROHC_ContextSessions=4:PDCP_Parameters_maxNumberROHC_ContextSessions_Root_cs16（ROHC頭壓縮支持最大數(shù)量=4）

phyLayerParameters(物理層參數(shù)）

ue_TxAntennaSelectionSupported=FALSE（UE發(fā)射天線選擇=否）

ue_SpecificRefSigsSupported=FALSE（UE特定參考信號(hào)支持=否）

rf_Parameters（無(wú)線參數(shù)）

supportedBandListEUTRA（EUTRA支持的頻段）

n=7

elem[0]

bandEUTRA=5

halfDuplex=FALSE

elem[1]

bandEUTRA=3

halfDuplex=FALSE

elem[2]

bandEUTRA=38

halfDuplex=FALSE

elem[3]

bandEUTRA=1

halfDuplex=FALSE

elem[4]

bandEUTRA=41

halfDuplex=FALSE

elem[5]

bandEUTRA=39

halfDuplex=FALSE

elem[6]

bandEUTRA=40

halfDuplex=FALSE

measParameters（測(cè)量參數(shù)）

bandListEUTRA

n=7

elem[0]

tOptFlags

interRAT_BandListPresent=1

interFreqBandList

（異頻頻段列表）

n=7

elem[0]

interFreqNeedForGaps=TRUE

elem[1]

interFreqNeedForGaps=TRUE

elem[2]

interFreqNeedForGaps=TRUE

elem[3]

interFreqNeedForGaps=TRUE

elem[4]

interFreqNeedForGaps=TRUE

elem[5]

interFreqNeedForGaps=TRUE

elem[6]

interFreqNeedForGaps=TRUE

interRAT_BandList

（異頻頻段列表）

n=2

elem[0]

interRAT_NeedForGaps=TRUE

elem[1]

interRAT_NeedForGaps=TRUE

elem[1]

tOptFlags

interRAT_BandListPresent=1.......featureGroupIndicators(功能集指示）bit1=0:Intra-subframefrequencyhoppingforPUSCHscheduledbyULgrant-etc（上行調(diào)度PUSCH幀間跳頻）bit2=1:SimultaneousCQIandACK/NACKonPUCCH-etc（PUCCH中CQI和ACK/KACK同時(shí)發(fā)送）

bit3=1:5bitRLCUMSN,7bitPDCPSNbit4=1:ShortDRXcyclebit5=1:LongDRXcycleandDRXcommandMACcontrolelementbit6=1:Prioritisedbitratebit7=1:RLCUM

bit8=0:EUTRARRC_CONNECTEDtoUTRACELL_DCHPShandoverbit9=0:EUTRARRC_CONNECTEDtoGERANGSM_Dedicatedhandoverbit10=0:EUTRARRC_CONNECTEDtoGERAN(Packet_)IdlebyCellChangeOrder-etc

bit11=0:EUTRARRC_CONNECTEDtoCDMA20001xRTTCSActivehandover

bit12=0:EUTRARRC_CONNECTEDtoCDMA2000HRPDActivehandoverbit13=1:Inter-frequencyhandover(withinFDDorTDD)bit14=1:Measurementreportingevent:EventA4orA5-etcbit15=1:Measurementreportingevent:EventB1Neighbour-etcbit16=1:non-ANRrelatedintra-frequencyperiodical-etcbit17=1:PeriodicalmeasurementreportingforSON/ANR,ANRrelatedintra-frequencymeasurementreportingeventsbit18=1:ANRrelatedinter-frequencymeasurementreportingeventsbit19=1:ANRrelatedinter-RATmeasurementreportingeventsbit20=1:SRB1andSRB2forDCCH+8xAMDRB-etcbit21=1:Predefinedintra-andinter-subframefrequencyhoppingforPUSCH-etcbit22=0:UTRANmeasurements,reportingandmeasurementreportingeventB2inE-UTRAconnectedmodebit23=0:GERANmeasurements,reportingandmeasurementreportingeventB2inE-UTRAconnectedmodebit24=0:1xRTTmeasurements,reportingandmeasurementreportingeventB2inE-UTRAconnectedmodebit25=1:Inter-frequencymeasurementsandreportinginE-UTRAconnectedmodebit26=1:HRPDmeasurements,reportingandmeasurementreportingeventB2inE-UTRAconnectedmodebit27=0:EUTRARRC_CONNECTEDtoUTRACELL_DCH

CShandoverbit28=1:TTIbundlingbit29=1:Semi-PersistentSchedulingbit30=1:HandoverbetweenFDDandTDDbit31=1:Undefinedbit32=0:UndefinedinterRAT_Parameters

tOptFlags

utraFDDPresent=0

utraTDD128Present=0

utraTDD384Present=0

utraTDD768Present=0geranPresent=0

cdma2000_HRPDPresent=1

cdma2000_1xRTTPresent=1cdma2000_HRPDsupportedBandListHRPD

n=1elem[0]=0:BandclassCDMA2000_Root_bc0tx_ConfigHRPD=0:IRAT_ParametersCDMA2000_HRPD_tx_ConfigHRPD_Root_single

rx_ConfigHRPD=0:IRAT_ParametersCDMA2000_HRPD_rx_ConfigHRPD_Root_single

cdma2000_1xRTT

supportedBandList1XRTT

n=1

elem[0]=0:BandclassCDMA2000_Root_bc0tx_Config1XRTT=0:IRAT_ParametersCDMA2000_1XRTT_tx_Config1XRTT_Root_single

rx_Config1XRTT=1:IRAT_ParametersCDMA2000_1XRTT_rx_Config1XRTT_Root_dual

nonCriticalExtension

tOptFlags

interRAT_ParametersUTRA_v920Present=0

interRAT_ParametersCDMA2000_v920Present=0

deviceType_r9Present=0

nonCriticalExtensionPresent=1

phyLayerParameters_v920

tOptFlagsenhancedDualLayerFDD_r9Present=0

enhancedDualLayerTDD_r9Present=1

enhancedDualLayerTDD_r9=0:PhyLayerParameters_v920_enhancedDualLayerTDD_r9_Root_supported

interRAT_ParametersGERAN_v920

tOptFlags

dtm_r9Present=0

e_RedirectionGERAN_r9Present=0

csg_ProximityIndicationParameters_r9

tOptFlags

intraFreqProximityIndication_r9Present=0

interFreqProximityIndication_r9Present=0

utran_ProximityIndication_r9Present=0

neighCellSI_AcquisitionParameters_r9

tOptFlags

intraFreqSI_AcquisitionForHO_r9Present=0

interFreqSI_AcquisitionForHO_r9Present=0

utran_SI_AcquisitionForHO_r9Present=0

son_Parameters_r9

tOptFlags

rach_Report_r9Present=1

rach_Report_r9=0:SON_Parameters_r9_rach_Report_r9_Root_supported

nonCriticalExtension

tOptFlags

lateNonCriticalExtensionPresent=1

nonCriticalExtensionPresent=1

lateNonCriticalExtension

nocts=23

data=e00000000701f87fe37840000001c27e0ff8de00000000(HEX)

tOptFlags

featureGroupIndRel9Add_r9Present=1

fdd_Add_UE_EUTRA_Capabilities_r9Present=1

tdd_Add_UE_EUTRA_Capabilities_r9Present=1

nonCriticalExtensionPresent=0

featureGroupIndRel9Add_r9

bit33=0:Inter-RATANRfeaturesforUTRANincluding-etc

bit34=0:Inter-RATANRfeaturesforGERANincluding-etc

bit35=0:Inter-RATANRfeaturesfor1xRTTincluding-etc

bit36=0:Inter-RATANRfeaturesforHRPDincluding-etc

。。。。。。fdd_Add_UE_EUTRA_Capabilities_r9。。。。。。tdd_Add_UE_EUTRA_Capabilities_r9。。。。。。nonCriticalExtension

tOptFlagsue_Category_v1020Present=0

phyLayerParameters_v1020Present=0

rf_Parameters_v1020Present=0

measParameters_v1020Present=0

featureGroupIndRel10_r10Present=1

interRAT_ParametersCDMA2000_v1020Present=0

ue_BasedNetwPerfMeasParameters_r10Present=1

interRAT_ParametersUTRA_TDD_v1020Present=0

nonCriticalExtensionPresent=1

featureGroupIndRel10_r10

numbits=32

data=40000000(HEX)

ue_BasedNetwPerfMeasParameters_r10

tOptFlags

loggedMeasurementsIdle_r10Present=1

standaloneGNSS_Location_r10Present=1

loggedMeasurementsIdle_r10=0:UE_BasedNetwPerfMeasParameters_r10_loggedMeasurementsIdle_r10_Root_supported

standaloneGNSS_Location_r10=0:UE_BasedNetwPerfMeasParameters_r10_standaloneGNSS_Location_r10_Root_supported

nonCriticalExtension

tOptFlags

fdd_Add_UE_EUTRA_Capabilities_v1060Present=1

tdd_Add_UE_EUTRA_Capabilities_v1060Present=1

rf_Parameters_v1060Present=0

nonCriticalExtensionPresent=0

fdd_Add_UE_EUTRA_Capabilities_v1060

tOptFlags

phyLayerParameters_v1060Present=0

featureGroupIndRel10_v1060Present=1

interRAT_ParametersCDMA2000_v1060Present=0

interRAT_ParametersUTRA_TDD_v1060Present=0

featureGroupIndRel10_v1060

numbits=32

data=40000000(HEX)

tdd_Add_UE_EUTRA_Capabilities_v1060

tOptFlags

phyLayerParameters_v1060Present=0

featureGroupIndRel10_v1060Present=1

interRAT_ParametersCDMA2000_v1060Present=0

interRAT_ParametersUTRA_TDD_v1060Present=0

featureGroupIndRel10_v1060

numbits=32

data=40000000(HEX)

elem[1]

rat_Type=4:RAT_Type_Root_cdma2000_1XRTT

ueCapabilityRAT_Container

nocts=8

data=0b0600048000810f(HEX)

as_Config

tOptFlags

verExt2Present=1

verExt3Present=0

sourceMeasConfig

tOptFlags

measObjectToRemoveListPresent=0

measObjectToAddModListPresent=1

reportConfigToRemoveListPresent=0

reportConfigToAddModListPresent=1

measIdToRemoveListPresent=0

measIdToAddModListPresent=1

quantityConfigPresent=0

measGapConfigPresent=0

s_MeasurePresent=0

preRegistrationInfoHRPDPresent=0

speedStateParsPresent=0

measObjectToAddModList

n=4

elem[0]

measObjectId=2

measObject

t=1

u

measObjectEUTRA

tOptFlags

cellsToRemoveListPresent=0

cellsToAddModListPresent=0

blackCellsToRemoveListPresent=0

blackCellsToAddModListPresent=0

cellForWhichToReportCGIPresent=0

verExt2Present=0

carrierFreq=1825

allowedMeasBandwidth=4:AllowedMeasBandwidth_Root_mbw75

presenceAntennaPort1=FALSE

neighCellConfig

numbits=2

data=01(BIT)

offsetFreq=15:Q_OffsetRange_Root_dB0

elem[1]

measObjectId=3

measObject

t=1

u

measObjectEUTRA

tOptFlags

cellsToRemoveListPresent=0

cellsToAddModListPresent=0

blackCellsToRemoveListPresent=0

blackCellsToAddModListPresent=0

cellForWhichToReportCGIPresent=0

verExt2Present=0

carrierFreq=100

allowedMeasBandwidth=5:AllowedMeasBandwidth_Root_mbw100

presenceAntennaPort1=FALSE

neighCellConfig

numbits=2

data=01(BIT)

offsetFreq=15:Q_OffsetRange_Root_dB0

elem[2]

measObjectId=4

measObject

t=4