9.10 Reporting of CSI-RS Resource Indicator (CRI)
36.1013GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception
The purpose of this test is to verify that the reported CSI-RS Resource Indicator is accurate. The accuracy of CRI reporting for Tests in Section 9.10.1 is determined by:
a) The ratio of the throughput obtained when transmitting based on the reported CRI and fixed precoder with multiple CSI-RS resources configured compared to that obtained when transmitting based on the fixed precoder with one CSI-RS resource configured: 
– 
is [70%] of the maximum throughput obtained at 
using fixed precoder and power scaling factor according to UE reported CRI value with multiple CSI-RS resources configured
– 
is throughput obtained at 
using fixed precoder and power scaling factor according to the one configured CSI-RS resource
– 
is specified based on CRS RE power
b) Each candidate CRI value among 0, 1,…, K-1 shall be reported at least % of the time at 
with multiple CSI-RS resources configured
– The number of configured CSI-RS resources K is specific to a test.
The accuracy of CRI reporting for Tests in Section 9.10.2 is determined by:
a) The ratio of the throughput obtained when transmitting based on the reported CRI and fixed precoder with multiple CSI-RS resources configured compared to that obtained when transmitting based on the fixed precoder with one CSI-RS resource configured: 
– 
is [70%] of the maximum throughput obtained at 
using the CRI configured according to the CSI UE report
– 
is throughput obtained at 
under assumption of single TP1 transmission
b) CRI 2 value among 0, 1 and 2 shall be reported at least % of the time at 
with 2 CSI-RS resources configured
c) CRI 0 value among 0, 1 and 2 shall be reported at least β % of the time at 
with 2 CSI-RS resources configured
– 
corresponds to [70%] of the maximum throughput under assumption of single TP1 transmission
9.10.1 Minimum requirement (PUSCH 3-1)
9.10.1.1 FDD
For the parameters specified in Table 9.10.1.1-1, and using the downlink physical channels specified in Annex C.3.2, the minimum requirements are specified in Table 9.10.1.1-2.
Table 9.10.1.1-1: CRI Test (FDD)
|
Parameter |
Unit |
Test 1-1 (K,N)=(2,8) |
Test 1-2 (K,N)=(2,16) |
Test 1-3 (K,N)=(4,32) |
Test 1-4 (K,N)=(8,64) |
|
|
Bandwidth |
MHz |
10 |
||||
|
Transmission mode |
9 |
|||||
|
Propagation channel |
EPA5 |
|||||
|
Beamforming model |
Annex B.4.6 |
|||||
|
Precoding granularity |
PRB |
50 |
||||
|
Correlation and antenna configuration (Note 1) |
4×2 XP High |
8×2 XP High |
8×2 XP High |
8×2 XP High |
||
|
Cell-specific reference signals |
Antenna ports 0,1 |
|||||
|
eMIMO-Type |
Class B |
|||||
|
Number of NZP-CSI resources (K) (Note 3) |
2 for following CRI 1 for fixed CRI |
2 for following CRI 1 for fixed CRI |
4 for following CRI 1 for fixed CRI |
8 for following CRI 1 for fixed CRI |
||
|
NZP-CSI-RS-ID-List |
{0,1} |
{0,1} |
{0,1,2,3 } |
{0,1,2,3,4,5,6,7} |
||
|
legacyCSRList |
{0,0} |
{0,0} |
{0,0,0,0} |
{0,0,0,0,0,0,0,0} |
||
|
CSI reference signal configuration List |
{0,1} |
{0,1} |
{0,1,2,3 } |
{0,1,2,3,0,1,2,3} |
||
|
Number of CSI-RS ports (Nk) |
{4,4} |
{8,8} |
{8,8,8,8} |
{8,8,8,8,8,8,8,8} |
||
|
CSI-RS-SubframeConfig List |
{1,1} |
{1,1} |
{1,1,1,1} |
{1,1,1,1,2,2,2,2} |
||
|
CodeBookSubsetRestriction with ID=0 |
0x 0000 00000000 0001 |
0x 0000 0000 0000 0020 0000 0000 0001 |
0x 0000 0000 0000 0020 0000 0000 0001 |
0x 0000 0000 0000 0020 0000 0000 0001 |
||
|
alternativeCodeBookEnabledFor4TX-r12 |
FALSE |
N/A |
N/A |
N/A |
||
|
Downlink power allocation |
|
dB |
0 |
0 |
0 |
0 |
|
|
dB |
0 |
0 |
0 |
0 |
|
|
Pc |
dB |
-3 |
-6 |
-6 |
-6 |
|
|
σ |
dB |
-3 |
-3 |
-3 |
-3 |
|
|
|
dB[mW/15kHz] |
-98 |
||||
|
Reporting mode |
PUSCH 3-1 |
|||||
|
Reporting interval |
ms |
5 |
||||
|
CRI Delay |
ms |
8 |
||||
|
PMI delay |
ms |
8 |
||||
|
Measurement channel |
R.50A-1 FDD |
R.50A-2 FDD |
R.50A-2 FDD |
R.50A-3 FDD |
||
|
OCNG Pattern |
OP.1 FDD |
|||||
|
Rank Number of PDSCH |
1 |
|||||
|
Scheduled PDSCH SFs |
SF 0,2,3,4,7,8,9 |
SF 0,2,3,4,7,8,9 |
SF 0,2,3,4,7,8,9 |
SF 0,3,4,8,9 |
||
|
Max number of HARQ transmissions |
4 |
|||||
|
Redundancy version coding sequence |
{0,1,2,3} |
|||||
|
Note 1: If the UE reports in an available uplink reporting instance at subrame SF#n based on CRI/PMI estimation at a downlink SF not later than SF#(n-4), this reported CRI/PMI cannot be applied at the eNB downlink before SF#(n+4). Note 2: PDSCH _RA= 0 dB, PDSCH_RB= 0 dB in order to have the same PDSCH and OCNG power per subcarrier at the receiver. Note 3: When one CSI-RS resource configured, the configurations according to NZP-CSI-RS-ID = 0 are configured. |
||||||
Table 9.10.1.1-2: Minimum requirement (FDD)
|
Test 1-1 |
Test 1-2 |
Test 1-3 |
Test 1-4 |
|
|
|
1.2 |
1.2 |
1.3 |
1.35 |
|
|
40 |
40 |
20 |
10 |
|
UE Category |
≥2 |
≥2 |
≥2 |
≥2 |
|
Note1: According to UE capability configuration list for the maximum number of NZP CSI-RS resource Kmax and the maximum number of total NZP CSI-RS ports N in each K =2,.., Kmax: if UE supports the combination of (K,N) =(8,64), then test 1-4 is applicable ; else if UE supports the combination of (K,N) =(4,32), then test 1-3 is applicable; else if UE supports the combination of (K,N) =(2,16), then test 1-2 is applicable; otherwise test 1-1 is applicable. |
||||
9.10.1.2 TDD
For the parameters specified in Table 9.10.1.2-1, and using the downlink physical channels specified in Annex C.3.2, the minimum requirements are specified in Table 9.10.1.2-2.
Table 9.10.1.2-1: CRI Test (TDD)
|
Parameter |
Unit |
Test 1-1 (K,N)=(2,8) |
Test 1-2 (K,N)=(2,16)) |
Test 1-3 (K,N)=(4,32) |
Test 1-4 (K,N)=(8,64) |
|
|
Bandwidth |
MHz |
10 |
||||
|
Transmission mode |
9 |
|||||
|
Uplink downlink configuration |
2 |
|||||
|
Special subframe configuration |
4 |
|||||
|
Propagation channel |
EPA5 |
|||||
|
Beamforming model |
Annex B.4.6 |
|||||
|
Precoding granularity |
PRB |
50 |
||||
|
Correlation and antenna configuration (Note 1) |
4×2 XP High |
8×2 XP High |
8×2 XP High |
8×2 XP High |
||
|
Cell-specific reference signals |
Antenna ports 0,1 |
|||||
|
eMIMO-Type |
Class B |
|||||
|
Number of NZP-CSI resources (K) (Note 3) |
2 for following CRI 1 for fixed CRI |
2 for following CRI 1 for fixed CRI |
4 for following CRI 1 for fixed CRI |
8 for following CRI 1 for fixed CRI |
||
|
NZP-CSI-RS-ID-List |
{0,1} |
{0,1} |
{0,1,2,3 } |
{0,1,2,3,4,5,6,7} |
||
|
legacyCSRList |
{0,0} |
{0,0} |
{0,0,0,0} |
{0,0,0,0,0,0,0,0} |
||
|
CSI reference signal configuration List |
{0,1} |
{0,1} |
{0,1,2,3 } |
{0,1,2,3,0,1,2,3} |
||
|
Number of CSI-RS ports (Nk) |
{4,4} |
{8,8} |
{8,8,8,8} |
{8,8,8,8,8,8,8,8} |
||
|
CSI-RS-SubframeConfig List |
{9,9} |
{9,9} |
{9,9,9,9} |
{8,8,8,8,9,9,9,9} |
||
|
CodeBookSubsetRestriction with ID=0 |
0x 0000 00000000 0001 |
0x 0000 0000 0000 0020 0000 0000 0001 |
0x 0000 0000 0000 0020 0000 0000 0001 |
0x 0000 0000 0000 0020 0000 0000 0001 |
||
|
alternativeCodeBookEnabledFor4TX-r12 |
FALSE |
N/A |
N/A |
N/A |
||
|
Downlink power allocation |
|
dB |
0 |
0 |
0 |
0 |
|
|
dB |
0 |
0 |
0 |
0 |
|
|
dB |
-3 |
-6 |
-6 |
-6 |
|
|
σ |
dB |
-3 |
-3 |
-3 |
-3 |
|
|
|
dB[mW/15kHz] |
-98 |
||||
|
Reporting mode |
PUSCH 3-1 |
|||||
|
Reporting interval |
ms |
10 |
||||
|
CRI Delay |
ms |
12 |
||||
|
PMI delay |
ms |
12 |
||||
|
Measurement channel |
R.44A-1 TDD |
R.44A-2 TDD |
R.44A-2 TDD |
R.44A-3 TDD |
||
|
OCNG Pattern |
OP.1 TDD |
|||||
|
Rank Number of PDSCH |
1 |
|||||
|
Scheduled PDSCH SFs |
SF 0,1,3,6,8,9 |
SF 0,1,3,6,8,9 |
SF 0,1,3,6,8,9 |
SF 0,1,6,8,9 |
||
|
Max number of HARQ transmissions |
4 |
|||||
|
Redundancy version coding sequence |
{0,1,2,3} |
|||||
|
ACK/NACK feedback mode |
Multiplexing |
|||||
|
Note 1: If the UE reports in an available uplink reporting instance at subrame SF#n based on PMI estimation at a downlink SF not later than SF#(n-4), this reported PMI cannot be applied at the eNB downlink before SF#(n+4). Note 2: PDSCH _RA= 0 dB, PDSCH_RB= 0 dB in order to have the same PDSCH and OCNG power per subcarrier at the receiver. Note 3: When one CSI-RS resource configured, the configurations according to NZP-CSI-RS-ID 0 are configured. Note 4: PDCCH DCI format 0 with a trigger for aperiodic CQI shall be transmitted in downlink SF#4 to allow aperiodic CRI/CQI/PMI/RI to be transmitted on uplink SF#2. |
||||||
Table 9.10.1.2-2: Minimum requirement (TDD)
|
Test 1-1 |
Test 1-2 |
Test 1-3 |
Test 1-4 |
|
|
|
1.2 |
1.2 |
1.3 |
1.35 |
|
|
40 |
40 |
20 |
10 |
|
UE Category |
≥2 |
≥2 |
≥2 |
≥2 |
|
Note1: According to UE capability configuration list for the maximum number of NZP CSI-RS resource Kmax and the maximum number of total NZP CSI-RS ports N in each K =2,.., Kmax: if UE supports the combination of (K,N) =(8,64), then test 1-4 is applicable; else if UE supports the combination of (K,N) =(4,32), then test 1-3 is applicable; else if UE supports the combination of (K,N) =(2,16), then test 1-2 is applicable; otherwise test 1-1 is applicable. |
||||
9.10.2 Minimum requirement (PUSCH 3-1, QCL Type C)
9.10.2.1 FDD
The requirements are specified in Table 9.10.2.1-4, with the additional parameters in Table 9.10.2.1-1, Table 9.10.2.1-2 and Table 9.10.2.1-3. In Table 9.10.2.1-1, transmission point 1 (TP 1) is the serving cell transmitting PDCCH, synchronization signals, PBCH and can transmit PDSCH, and transmission point 2 (TP 2) has different Cell ID and can transmit PDSCH. The downlink physical channel setup for TP 1 is according to Table C.3.2 and for TP 2 according to Table C.3.2.
Table 9.10.2.1-1: Test Parameters
|
Parameter |
Unit |
Fixed TP1 case |
Follow CRI case |
|||
|
TP 1 |
TP 2 |
TP 1 |
TP 2 |
|||
|
Downlink power allocation |
|
dB |
0 |
0 |
0 |
0 |
|
|
dB |
0 (Note 1) |
0 |
0 (Note 1) |
0 |
|
|
σ |
dB |
-3 |
-3 |
-3 |
-3 |
|
|
|
dB |
SNR1 (Note 2) |
SNR2 = SNR1 – [9] dB |
SNR1 (Note 2) |
SNR2 = SNR1 – [9] dB |
|
|
|
dBm/15kHz |
-98 |
||||
|
BWChannel |
MHz |
10 |
||||
|
Cyclic Prefix |
Normal |
|||||
|
PDSCH transmission mode |
10 |
|||||
|
Number of allocated resource block |
50 |
|||||
|
Cell ID |
0 |
126 |
0 |
126 |
||
|
Number of control OFDM symbols / PDSCH start |
2 |
2 |
2 |
2 |
||
|
Cell-specific reference signals |
Antenna ports 0,1 |
|||||
|
eMIMO-Type |
Class B |
|||||
|
CSI reference signals 0 |
Antenna ports {15,16} |
N/A |
Antenna ports {15,16} |
NA |
||
|
CSI-RS 0 periodicity and subframe offset TCSI-RS / ∆CSI-RS |
Subframes |
5 / 2 |
5 / 2 |
|||
|
CSI reference signal 0 configuration |
0 |
0 |
||||
|
CSI reference signals 1 |
N/A |
Antenna ports {15,16} |
N/A |
Antenna ports {15,16} |
||
|
CSI-RS 1 periodicity and subframe offset TCSI-RS / ∆CSI-RS |
Subframes |
5 / 2 |
5 / 2 |
|||
|
CSI reference signal 1 configuration |
8 |
8 |
||||
|
CodeBookSubsetRestriction for CSI-RS 0 |
001111 |
N/A |
001111 |
N/A |
||
|
CodeBookSubsetRestriction for CSI-RS 1 |
N/A |
001111 |
N/A |
001111 |
||
|
Zero-power CSI-RS 0 configuration ICSI-RS / ZeroPower CSI-RS bitmap |
Subframes/bitmap |
2/ 0010000000000000 |
N/A |
2/ 0010000000000000 |
N/A |
|
|
Zero-power CSI-RS1 configuration ICSI-RS / ZeroPower CSI-RS bitmap |
Subframes/bitmap |
N/A |
2/ 0010000000000000 |
N/A |
2/ 0010000000000000 |
|
|
Timing offset relative to TP 1 |
us |
N/A |
0 |
N/A |
0 |
|
|
Frequency offset relative to TP 1 |
Hz |
N/A |
0 |
N/A |
0 |
|
|
qcl-Operation, ‘PDSCH RE Mapping and Quasi-Co-Location Indicator’ |
Type B, ‘00’ |
Type C, PQI based on UE reporting |
||||
|
Reporting mode |
PUSCH 3-1 |
|||||
|
Reporting interval |
ms |
5 |
||||
|
CRI Delay |
ms |
8 |
||||
|
PMI delay |
ms |
8 |
||||
|
Measurement channel |
R.97 FDD |
|||||
|
Correlation and antenna configuration |
2×2 Low |
|||||
|
Propagation channel |
EPA5 |
|||||
|
Note 1: Note 2: TP1 SNR based on SNR value derived for exact test metric verification and can be equal to |
||||||
at antenna port
or 
Table 9.10.2.1-2: Configurations of PQI and DL transmission hypothesis for each PQI set (Fixed TP1 case)
|
PQI set index |
Parameters in each PQI set |
DL transmission hypothesis for each PQI Set |
||
|
NZP CSI-RS Index (For quasi co-location) |
ZP CSI-RS configuration |
TP 1 |
TP 2 |
|
|
PQI set 0 |
CSI-RS 0 |
ZP CSI-RS 0 |
PDSCH |
Blank |
Table 9.10.2.1-3: Configurations of PQI and DL transmission hypothesis for each PQI set (Follow CRI case)
|
PQI set index |
Parameters in each PQI set |
DL transmission hypothesis for each PQI Set |
||
|
NZP CSI-RS Index (For quasi co-location) |
ZP CSI-RS configuration |
TP 1 |
TP 2 |
|
|
PQI set 0 |
CSI-RS 0 |
ZP CSI-RS 0 |
PDSCH |
Blank |
|
PQI set 1 |
CSI-RS 1 |
ZP CSI-RS 1 |
Blank |
PDSCH |
|
PQI set 2 |
CSI-RS 0 for CW1 |
ZP CSI-RS 0 |
PDSCH |
PDSCH |
Table 9.10.2.1-4: Minimum requirement (FDD)
|
Test 1 |
|
|
|
1.2 |
|
|
40 |
|
|
60 |
|
UE Category |
≥2 |
9.10.2.2 TDD
The requirements are specified in Table 9.10.2.2-4, with the additional parameters in Table 9.10.2.2-1, Table 9.10.2.2-2 and Table 9.10.2.2-3. In Table 9.10.2.2-1, transmission point 1 (TP 1) is the serving cell transmitting PDCCH, synchronization signals, PBCH and can transmit PDSCH, and transmission point 2 (TP 2) has different Cell ID and can transmit PDSCH. The downlink physical channel setup for TP 1 is according to Table C.3.2 and for TP 2 according to Table C.3.2.
Table 9.10.2.2-1: Test Parameters
|
Parameter |
Unit |
Fixed TP1 case |
Follow CRI case |
|||
|
TP 1 |
TP 2 |
TP 1 |
TP 2 |
|||
|
Downlink power allocation |
|
dB |
0 |
0 |
0 |
0 |
|
|
dB |
0 (Note 1) |
0 |
0 (Note 1) |
0 |
|
|
σ |
dB |
-3 |
-3 |
-3 |
-3 |
|
|
|
dB |
SNR1 (Note 2) |
SNR2 = SNR1 – [9] dB |
SNR1 (Note 2) |
SNR2 = SNR1 – [9] dB |
|
|
|
dBm/15kHz |
-98 |
||||
|
Uplink downlink configuration |
1 |
|||||
|
Special subframe configuration |
4 |
|||||
|
BWChannel |
MHz |
10 |
||||
|
Cyclic Prefix |
Normal |
|||||
|
PDSCH transmission mode |
10 |
|||||
|
Number of allocated resource block |
50 |
|||||
|
Cell ID |
0 |
126 |
0 |
126 |
||
|
Number of control OFDM symbols / PDSCH start |
2 |
2 |
2 |
2 |
||
|
Cell-specific reference signals |
Antenna ports 0,1 |
|||||
|
eMIMO-Type |
Class B |
|||||
|
CSI reference signals 0 |
Antenna ports {15,16} |
N/A |
Antenna ports {15,16} |
NA |
||
|
CSI-RS 0 periodicity and subframe offset TCSI-RS / ∆CSI-RS |
Subframes |
5 / 4 |
5 / 4 |
|||
|
CSI reference signal 0 configuration |
0 |
0 |
||||
|
CSI reference signals 1 |
N/A |
Antenna ports {15,16} |
N/A |
Antenna ports {15,16} |
||
|
CSI-RS 1 periodicity and subframe offset TCSI-RS / ∆CSI-RS |
Subframes |
5 / 4 |
5 / 4 |
|||
|
CSI reference signal 1 configuration |
8 |
8 |
||||
|
CodeBookSubsetRestriction for CSI-RS 0 |
001111 |
N/A |
001111 |
N/A |
||
|
CodeBookSubsetRestriction for CSI-RS 1 |
N/A |
001111 |
N/A |
001111 |
||
|
Zero-power CSI-RS 0 configuration ICSI-RS / ZeroPower CSI-RS bitmap |
Subframes/bitmap |
4/ 0010000000000000 |
N/A |
4/ 0010000000000000 |
N/A |
|
|
Zero-power CSI-RS1 configuration ICSI-RS / ZeroPower CSI-RS bitmap |
Subframes/bitmap |
N/A |
4/ 0010000000000000 |
N/A |
4/ 0010000000000000 |
|
|
Timing offset relative to TP 1 |
us |
N/A |
0 |
N/A |
0 |
|
|
Frequency offset relative to TP 1 |
Hz |
N/A |
0 |
N/A |
0 |
|
|
qcl-Operation, ‘PDSCH RE Mapping and Quasi-Co-Location Indicator’ |
Type B, ‘00’ |
Type C, PQI based on UE reporting |
||||
|
Reporting mode |
PUSCH 3-1 |
|||||
|
Reporting interval |
ms |
5 |
||||
|
CRI Delay |
ms |
8 |
||||
|
PMI delay |
ms |
8 |
||||
|
Measurement channel |
R.97 TDD |
|||||
|
Correlation and antenna configuration |
2×2 Low |
|||||
|
Propagation channel |
EPA5 |
|||||
|
Note 1: Note 2: TP1 SNR based on SNR value derived for exact test metric verification and can be equal to
|
||||||
at antenna port
or 
Table 9.10.2.2-2: Configurations of PQI and DL transmission hypothesis for each PQI set (Fixed TP1 case)
|
PQI set index |
Parameters in each PQI set |
DL transmission hypothesis for each PQI Set |
||
|
NZP CSI-RS Index (For quasi co-location) |
ZP CSI-RS configuration |
TP 1 |
TP 2 |
|
|
PQI set 0 |
CSI-RS 0 |
ZP CSI-RS 0 |
PDSCH |
Blank |
Table 9.10.2.2-3: Configurations of PQI and DL transmission hypothesis for each PQI set (Follow CRI case)
|
PQI set index |
Parameters in each PQI set |
DL transmission hypothesis for each PQI Set |
||
|
NZP CSI-RS Index (For quasi co-location) |
ZP CSI-RS configuration |
TP 1 |
TP 2 |
|
|
PQI set 0 |
CSI-RS 0 |
ZP CSI-RS 0 |
PDSCH |
Blank |
|
PQI set 1 |
CSI-RS 1 |
ZP CSI-RS 1 |
Blank |
PDSCH |
|
PQI set 2 |
CSI-RS 0 for CW1 |
ZP CSI-RS 0 |
PDSCH |
PDSCH |
Table 9.10.2.2-4: Minimum requirement (FDD)
|
Test 1 |
|
|
|
1.2 |
|
|
40 |
|
|
60 |
|
UE Category |
≥2 |