Mr Kang
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發(fā)表于 2020-05-12 09:09:19
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5G(NR)中的DCI( Downlink Control Information)就是下行控制信息，其中：Format 0_1用于小區(qū)的上行PUSCH調(diào)度等信息，其中包括載波、UL/SUL等，主要內(nèi)容如下：
Field (Item) | Bits | Reference | 主要內(nèi)容 | Identifier for DCI formats | 1 |
|
| Carrier indicator | 0 or 3 |
| 載波指示 0 or 3 | UL/SUL Indicator | 0,1 | 0 - bit for UE not configured with SUL in the cell 1 - bit for UEs configured with SUL in the cell | 0：不配置SUL 1: 配置SUL | Bandwidth part indicator | 0,1,2 | Determined by BandwidthPart-Config in higher layer message and 38.212 - Table 7.3.1.1.2-1 | 高層BWP指示：0，1，2（38.212 - Table 7.3.1.1.2-1） | Frequency domain resource assignment | Variable | Variable with Resource Allocation Type | 頻域資源指配 | Time domain resource assignment | 4 | Carries the row index of the items in pusch_allocationList in RRC Number of Bit Length is determined by log(I,2), where I is the number of elements in pusch_allocationList in RRC | 時(shí)域資源指配 | Frequency Hopping Flag | 0,1 |
| 跳頻指示 | Modulation and coding scheme | 5 | 38.214 - 6.1.4 (See this table) | 調(diào)制和編碼 | New data indicator | 1 |
| 新數(shù)據(jù)標(biāo)識(shí) | Redundancy version | 2 | 0,1,2,3 | 冗余版本 | HARQ process number | 4 |
| HARQ進(jìn)程 | 1st Downlink assignment index | 1,2 |
| 首個(gè)下行指配標(biāo)識(shí) | 2nd Downlink assignment index | 0,2 |
| 第二個(gè)下行指配標(biāo)識(shí) | TPC command for scheduled PUSCH | 2 |
| PUSCH中的功控命令 | SRS resource indicator | Variable | Determined by RRC Parameter SRS-SetUse | SRS資源指示 | Precoding information and number of layers (TPMI) | 0,2,3,4,5,6 | Determined by ulTxConfig, Number of Antenna ports, PUSCH-tp, ULmaxRank | 預(yù)編碼和層信息 | Antenna ports | 2,3,4,5 | Determined by PUSCH-tp, DL-DMRS-config-type, DL-DMRS-config-max-len, Rank | 天線端口 | SRS request | 2 | Table 7.3.1.1.2-24 | SRS請(qǐng)求 | CSI request | 0,1,2,3,4,5,6 | Determined by ReportTriggerSize in RRC message. See Configure Aperiodic Trigger section for the details. | CSI請(qǐng)求 | CBG transmission information | 0,2,4,6,8 | Determined by maxCodeBlockGroupPerTransportblock in RRC message | CBG傳輸信息 | PTRS - DMRS Association | 0,2 | Determined by UL-PTRS-present, PUSCH-tp in RRC Message | PTRS-DMRS信息 | beta_offsetr Indicator | 0,2 | 0 - if uci-on-PUSCH.dynamic = Not Configured 2 - otherwise, see Table 7.3.1.1.2-27 | beta_offsetr 指示 | DMRS Sequence Initialization | 0,1 | 0 - if PUSCH-tp=Disabled 1 - if PUSCH-tp=Enabled | 初始DMRS序列 | UL-SCH Indicator | 1 | 0 - UL-SCH shall not be transmitted on the PUSCH 1 - UL-SCH shall be transmitted on the PUSCH | UL-SCH指示 |
1. Bandwidth part indicator（38.212 v15.3.0 - Table 7.3.1.1.2-1）
Value of BWP indicator field | Bandwidth part | 1 bit | 2 bits | 0 | 0 | First bandwidth part configured by higher layers | 1 | 1 | Second bandwidth part configured by higher layers |
| 10 | Third bandwidth part configured by higher layers |
| 11 | Fourth bandwidth part configured by higher layers |
2. Frequency domain resource assignment
3.Nominal RBG size P（38.214-v15.3.0 Table 6.1.2.2.1-1）
Carrier Bandwidth Part Size | Configuration 1 | Configuration 2 | 1-36 | 2 | 4 | 37-72 | 4 | 8 | 73-144 | 8 | 16 | 145-275 | 16 | 16 |
4. SRS resource indicator （38.212-Table 7.3.1.1.2-24）
SRS-ResourceSet.usage | Bit Length of SRS Resource Indicator | CodeBook | 
| N_SRS is the number of configured SRS resources in the SRS resource set associated with "usage". | NonCodeBook |
|
|
Value of SRS request field | Triggered aperiodic SRS resource set(s) | 00 | No aperiodic SRS resource set triggered | 01 | SRS resource set(s) configured with higher layer parameter aperiodicSRS-ResourceTrigger set to 1 | 10 | SRS resource set(s) configured with higher layer parameter aperiodicSRS-ResourceTrigger set to 2 | 11 | SRS resource set(s) configured with higher layer parameter aperiodicSRS-ResourceTrigger set to 3 |
5.Precoding information and number of layers
txMode(UL) | Antenna | PUSCH-tp | ULmaxRank | ULCodebookSubset | Bit Length | Table in 38.212 | NonCodeBook |
|
|
|
| 0 |
| CodeBook | 4 ports | Disabled | 2 or 3 or 4 |
| 4 or 5 or 6 | 7.3.1.1.2-2 | CodeBook | 4 ports | Disabled |
|
| 2 or 4 or 5 | 7.3.1.1.2-3 | Enabled | 1 |
| CodeBook | 2 ports |
| 2 |
| 3 or 4 | 7.3.1.1.2-4 | CodeBook | 2 ports |
| 1 |
| 2 or 3 | 7.3.1.1.2-5 |
6.Antenna ports
PUSCH-tp | DMRS-config-type | DMRS-config-max-len | Rank | Bit Lenth | Table in 38.212 | Enabled | 1 | 1 |
| 2 | 7.3.1.1.2-6 | 1 | 2 |
| 4 | 7.3.1.1.2-7 | Disabled | 1 | 1 | 1 | 3 | 7.3.1.1.2-8 | 1 | 1 | 2 | 3 | 7.3.1.1.2-9 | 1 | 1 | 3 | 3 | 7.3.1.1.2-10 | 1 | 1 | 4 | 3 | 7.3.1.1.2-11 | Disabled | 1 | 2 | 1 | 4 | 7.3.1.1.2-12 | 1 | 2 | 2 | 4 | 7.3.1.1.2-13 | 1 | 2 | 3 | 4 | 7.3.1.1.2-14 | 1 | 2 | 4 | 4 | 7.3.1.1.2-15 | Disabled | 2 | 1 | 1 | 4 | 7.3.1.1.2-16 | 2 | 1 | 2 | 4 | 7.3.1.1.2-17 | 2 | 1 | 3 | 4 | 7.3.1.1.2-18 | 2 | 1 | 4 | 4 | 7.3.1.1.2-19 | Disabled | 2 | 2 | 1 | 5 | 7.3.1.1.2-20 | 2 | 2 | 2 | 5 | 7.3.1.1.2-21 | 2 | 2 | 3 | 5 | 7.3.1.1.2-22 | 2 | 2 | 4 | 5 | 7.3.1.1.2-23 |
7. PTRS - DMRS Association
UL-PTRS-present | PUSCH-tp | UL PTRS port | UL-PTRS-ports | Bit Length | Table in 38.212 | OFF | Disabled |
|
| 0 | N/A | ON | Enabled |
|
| 0 | N/A | ON | Disabled |
|
| 0 | N/A | Otherwise | 0 | 1 | 2 | 7.3.1.1.2-25 | 0 | 2 | 2 | 7.3.1.1.2-26 | 1 | 2 | 2 | 7.3.1.1.2-26 |
原文來自：http://www.sharetechnote.com/
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