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5G(NR)中的DCI--Format 0_1
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发表于 2020-05-12 09:09:19  只看楼主 

       5G(NR)中的DCI( Downlink Control Information)就是下行控制信息,其中:Format 0_1用于小区的上行PUSCH调度等信息,其中包括载波、UL/SUL等,主要内容如下:



Field   (Item)

Bits

Reference

主要内容

Identifier   for DCI formats

1



Carrier   indicator

0 or 3


载波指示 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

高层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

频域资源指配

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

时域资源指配

Frequency Hopping Flag

0,1


跳频指示

Modulation   and coding scheme

5

38.214 - 6.1.4 (See this table)

调制和编码

New   data indicator

1


新数据标识

Redundancy   version

2

0,1,2,3

冗余版本

HARQ   process number

4


HARQ进程

1st   Downlink assignment index

1,2


首个下行指配标识

2nd   Downlink assignment index

0,2


第二个下行指配标识

TPC   command for scheduled PUSCH

2


PUSCH中的功控命令

SRS   resource indicator

Variable

Determined by RRC Parameter SRS-SetUse

SRS资源指示

Precoding information and number of layers (TPMI)

0,2,3,4,5,6

Determined   by ulTxConfig, Number of Antenna ports, PUSCH-tp, ULmaxRank

预编码和层信息

Antenna   ports

2,3,4,5

Determined   by PUSCH-tp, DL-DMRS-config-type, DL-DMRS-config-max-len, Rank

天线端口

SRS   request

2

Table 7.3.1.1.2-24

SRS请求

CSI   request

0,1,2,3,4,5,6

Determined by ReportTriggerSize in   RRC message.

See Configure Aperiodic Trigger section for the details.

CSI请求

CBG   transmission information

0,2,4,6,8

Determined by maxCodeBlockGroupPerTransportblock in RRC message

CBG传输信息

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 


Resource   Allocation Type

Mumber   of Bits

Resource Allocation Type 0 only

http://www.sharetechnote.com/html/5G/image/NR_DCI_0_1_FrequencyDomainResourceAllocation_Expr_01.png, P is   defined in 38.214 Table 6.1.2.2.1-1

Resource Allocation Type 1 only

http://www.sharetechnote.com/html/5G/image/NR_DCI_0_1_FrequencyDomainResourceAllocation_Expr_02.png

Resource Allocation Type 0 and Type 1

Bit Length :

      http://www.sharetechnote.com/html/5G/image/NR_DCI_0_1_FrequencyDomainResourceAllocation_Expr_03.png

MSB Indicates Resource Allocation Type

     0 : Resource   Allocation Type 0

     1 : Resource Allocation   Type 1


 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

http://www.sharetechnote.com/html/5G/image/NR_DCI_0_1_SRS_Resource_Indicator_Expr_01.png

N_SRS is the number of configured SRS resources   in the SRS resource set associated with  "usage".

NonCodeBook

http://www.sharetechnote.com/html/5G/image/NR_DCI_0_1_SRS_Resource_Indicator_Expr_02.png



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


原文来自:http://www.sharetechnote.com/

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