3GPP在TS36.212 5.3.3.1中定義了DCI的Format及結(jié)構(gòu);由于版本和Format不同其具體內(nèi)容有一定差異,但基本結(jié)構(gòu)和內(nèi)容均基于R8的結(jié)構(gòu)和內(nèi)容;其中:DCI format0(R8)內(nèi)容如下:
format 0 (Release 8) - C-RNTI, SPS C-RNTI
Field Name(字段名稱)
Length(長(zhǎng)度)
Comment(內(nèi)容)
Flag for format0/format1A differentiation(format0與format0區(qū)分標(biāo)識(shí))
Hopping flag(跳頻標(biāo)識(shí))
N_ULhop(上行跳頻)
1 (1.4 Mhz)
1 (3 Mhz)
1 (5 Mhz)
2 (10 Mhz)
2 (15 Mhz)
2 (20 Mhz)
Applicable only when Hopping flag is set.(Refer to 36.213 Table 8.4-1 and Table 8.4-2)is.(如果標(biāo)識(shí)跳頻,查表36.213 Table 8.4-1 and Table 8.4-2)
Resource block assignment(資源指配)
5 (1.4 Mhz)
7 (3 Mhz)
7 (5 Mhz)
11 (10 Mhz)
12 (15 Mhz)
13 (20 Mhz)
MCS and RV(MSC和RV指示)
NDI (New Data Indicator)(新數(shù)據(jù)標(biāo)識(shí))
TPC for PUSCH(PUSCH功率控制)
Cyclic shift for DM RS(DM RS循環(huán)前綴)
See 36.211 Table 5.5.2.1.1-1(查表5.5.2.1.1-1)
UL index (TDD only)(上行指示--僅TDD)
This field is present only for TDD operation with uplink-downlink configuration 0
Downlink Assignment Index (DAI)(下行指示)
set only in TDD
Operation with uplink-downlink configurations 1-6
CSI request (1 or 2 bit)(CSI請(qǐng)求)
This field is used to trigger Aperiodic CSI report from UE based on 36.213 7.2.1.
In case of Aperiodic Report in Carrier Aggregation, Refer to this page.
附1.36.213 Table 8.4-1: Number of Hopping Bits NUL_hop vs. System Bandwidth
附2.36.213 Table 8.4-2: PDCCH DCI Format 0 Hopping Bit Definition
附3.36.213 8.1 Resource Allocation for PDCCH DCI Format 0
附4.36.211 Table 5.5.2.1.1-1: Mapping of Cyclic Shift Field in DCI format 0 to DMRS(2)_n Values
附5.36.213 Table 7.3-X: Value of Downlink Assignment Index
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