LTE(4G) - NR(5G) RRC连接重配置(RRC Connection Reconfiguration)LTE(4G) - NR(5G) RRC连接重配置(RRC Connection Reconfiguration)

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我是靠谱客的博主超级小甜瓜，最近开发中收集的这篇文章主要介绍LTE(4G) - NR(5G) RRC连接重配置(RRC Connection Reconfiguration)LTE(4G) - NR(5G) RRC连接重配置(RRC Connection Reconfiguration)，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

LTE(4G) - NR(5G) RRC连接重配置(RRC Connection Reconfiguration)

描述

RRC Connection Reconfiguration可传递信息

流程图

Log

总结

LTE(4G) - NR(5G) RRC连接重配置(RRC Connection Reconfiguration)

描述

RRC连接重配置主要的作用就是，修改RRC连接。我们知道当UE第一次接入网络的时候就要进行RRC连接，建立的原因是为了建立SRB1等承载。如果UE需要传IP包那就需要建立DRB或者SRB2承载他们如何来建立呢？就是通过RRC连接重配置进行建立

RRC Connection Reconfiguration可传递信息

传递信息	案例
无线资源配置	包括DRB SRB等RB操作，MAC 主要配置和无线信66道配置
相关专用NAS信息和安全性配置
修改控制信息	发送切换命令:比如UE要接入邻区，基站发送一条RRC连接重配置信令，UE会先建立一个DRB而后UE会发起一个重配置成功消息
测试配置	建立 , 修改 , 释放 , 测量。如何测，网络侧会将自己测量的信息通过RRC重配置给UE的

流程图

流程很简单，基站发起一个重配置过来，UE收到后根据重配置协议信息进行配置，UE发起一个连接重配置成功信令给基站

Log

RRCConnectionReconfiguration
Type: DCCH_DL
Direction: Downlik
Computer Timestamp: 14:33:22.943
EarfcnPci: 32432 - 55
DL - DCCH-Message
message
c1
rrcConnectionReconfiguration
rrc-TransactionIdentifier: 0
criticalExtensions
c1
rrcConnectionReconfiguration-r8
measConfig
//对应测量的配置，测量如何测，是需要基站通知UE的
measObjectToAddModList
measObjectId: 2
measObjectId //测量的对象
measObjectEUTRA
carrierFreq: 344213 //测量目标的频点
allowedMeasBandWidhth: (0)mbw6
//允许测量的带宽
presenceAntennaPrort1: false
neighCellConfig: 0x1
//邻区的配置
offsetFreq: (15) dB0
//偏移量
reportConfigToAddModList
ReportConfigToAddMod
reportConfigId: 1
reportConfig
//测量报告相关配置
reportConfigEUTRA
triggerType
event
eventId
eventA3 //测量报告基于A3进行发送的
a3-Offset: 6
//A3的偏移量
reportOnLeave: false
hysteresis: 2
timeToTrigger: (1) ms40
triggerQuantity: (0) rerp
reportQuantity: (1) both
maxReportCells: 4
//最大上报小区
reportInterval: (2) ms480
reportAmount: (7) infinity
reportConfigId: 2
reportConfig
reportConfigEutra
triggerType
event
eventId
eventA2 //A2测试报告事件
a2-Threshold
threshold-RSRP: 0
hysteresis: 2
timeToTrigger: (11) ms661
triggerQuantity: (0) rsrp
reportQuantity: (1) both
maxReportCells: 5
reportInterval: (2) ms441
reportAmount:(7) infinity
reportConfigId: 3
reportConfig
reportConfigEUTRA
triggerType
event
eventId
eventA2
a2-Threshold
threshold-RSRQ: 1
hysteresis: 2
timeToTrigger: (11) ms642
triggerQuantity: (1) resrq
reportQuantity: (1) both
maxReportCells: 4
reportInterval: (2) ms480
reportAmount: (7) infinity
measIdToAddModList
MeasIdToAddMod
measId: 1
measObjectId: 1
reportConfigId :1
measId: 2
measObjectId: 1
reportConfigId: 2
measId: 3
measObjectId: 1
reportConfigId: 3
quantityConfig
quantityConfigEUTRA
filterCoefficientRSRP: (4) fc4
filterCoefficientRSRQ: (5) fc11
speedStatePars: release
radioResourceConfigDedicated
//无线资源的专用配置
srb-ToAddModList
SRB-ToAddMod
srb-Identity: 2
//配置SRB2
rlc-Config
explicitValue
am
ul-AM-RLC
t-PollRetransmit: (8) ms45
pollPDU: (7) pInfinity
pollByte: (14)kBinfinity
maxRetxThreshold: (5) t8
dl-AM-RLC
t-Reordering: (7) ms35
tStatusProhibit: (0) ms0
logicalChannelConfig
explicitValue
ul-SpecificParameters
priority: 3
prioritisedBitRate: (7) infinity
bucketSizeDuration: (0) ms50
logicalChannelGroup: 0
drb-ToAddModList
DRB-ToAddMod
eps-BearerIdentity:5
//EPS 承载
drb-Identity: 3
//配置DRB
pdcp-Config
discardTimer: (7) infinity
rlc-AM
statusReportRequired: false
headerCompression: notUsed
rlc-Config
am
ul-AM-RLC
t-PollRetransmit: (9) ms50
pollPDU: (2) p13
pollByte: (14) kBinfinity
maxRetxThreshold: (5) t8
dl-AM-RLC
t-Reordering: (7) ms35
t-StatusProhoibit: (5) ms25
logicalChannelIdentity: 3
logicalChannelConfig
ul-SpecificParameters
priority: 4
prioritisedBitRate: (1) kBps8
bucketSizeDuration: (0) ms50
logicalChannelGroup: 1