RRC重配置是在終端完成與網(wǎng)絡(luò)側(cè)的連接后對無線連接資源更新(修改); 5G(NR)網(wǎng)絡(luò)中的RRC重配置包括以下五方面內(nèi)容,它們分別是:
· 無線承載配置
· 測量配置
· 輔小區(qū)組(SCG)
· NR-輔小區(qū)組配置
· 輔小區(qū)同步配置
1.無線承載配置( RadioBearerConfig )
RadioBearerConfig ::= SEQUENCE {
srb-ToAddModList SRB-ToAddModList OPTIONAL, -- Need N(SRB添加)
srb3-ToRelease ENUMERATED{true} OPTIONAL, -- Need N(SRB3釋放)
drb-ToAddModList DRB-ToAddModList OPTIONAL, -- Need N(DRB添加)
drb-ToReleaseList DRB-ToReleaseList OPTIONAL, -- Need N(DRB釋放)
securityConfig SecurityConfig OPTIONAL, -- Cond M...}(安全密鑰)
2.無線測量配置(MeasConfig)
MeasConfig ::= SEQUENCE {
measObjectToRemoveList MeasObjectToRemoveList OPTIONAL, -- Need N(測量目標(biāo)移出)
measObjectToAddModList MeasObjectToAddModList OPTIONAL, -- Need N(測量目標(biāo)添加)
reportConfigToRemoveList ReportConfigToRemoveList OPTIONAL, -- Need N(測量報告移動)
reportConfigToAddModList ReportConfigToAddModList OPTIONAL, -- Need N(測量報告添加)
measIdToRemoveList MeasIdToRemoveList OPTIONAL, -- Need N(測量ID移出)
measIdToAddModList MeasIdToAddModList OPTIONAL, -- Need N(測量ID添加)
s-MeasureConfig CHOICE { (SSB測量選項)
ssb-RSRP RSRP-Range, (SSB RSRP,取值范圍)
csi-RSRP RSRP-Range (csi RSRP,取值范圍)
} OPTIONAL, -- Need M
quantityConfig QuantityConfig OPTIONAL, -- Need M (測量報告數(shù)量配置)
measGapConfig MeasGapConfig OPTIONAL, -- Need M (測量GAP配置)
measGapSharingConfig MeasGapSharingConfig OPTIONAL, -- Need M ...} (測量GAP共享配置)
3.SCG小區(qū)配置(SpcellConfig)
SpCellConfig ::= SEQUENCE {
servCellIndex ServCellIndex OPTIONAL, -- Cond SCG (服務(wù)小區(qū)指示)
reconfigurationWithSync ReconfigurationWithSync OPTIONAL, (重配置包括同步)
rlf-TimersAndConstants etupRelease {RLF-TimersAndConstants}OPTIONAL,--Need M(無線鏈路定時器)
rlmInSyncOutOfSyncThreshold INTEGER(0..1) OPTIONAL,-- Need M(無線鏈路失步門限)
spCellConfigDedicated ServingCellConfig OPTIONAL,-- Need M ..}(專用模式下SCG小區(qū)配置)
4.RRC重配置消息主要字段
IE(Information Element) | Example | Description |
absoluteFrequencySSB | 2054962 | SSB頻率 |
ssb_SubcarrierOffset | Omit | SSB子載波偏滯 |
frequencyBandList |
| 頻段信息 |
frequencyBand[0] | 257 | 頻段號 |
absoluteFrequencyPointA | 2054170 | 參考信號頻點 |
scs_SpecificCarrierList |
| 子載波間隔列表 |
scs_SpecificCarrier[0] |
| 子載波(0) |
offsetToCarrier | 0 | 偏滯 |
subcarrierSpacing | 120khz | 子載波間隔 |
k0 | n0 |
|
carrierBandwidth | 66 | 載波帶寬 |
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