8.14 Demodulation (UE supporting Short TTI)
36.1013GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception
The performance requirements specified in this clause are valid for UEs capable of short TTI.
8.14.1 Slot-PDSCH and Subslot-PDSCH
8.14.1.1 FDD (Fixed Reference Channel)
The parameters specified in Table 8.14.1.1-1 are valid for FDD unless otherwise stated.
Table 8.14.1.1-1: Common Test Parameters
|
Parameter |
Unit |
Value |
|||
|
Cyclic prefix |
Normal |
||||
|
Cell ID |
0 |
||||
|
Number of HARQ processes |
Processes |
8 for Slot-PDSCH 8 for subslot-PDSCH with proc-Timeline=set1 (Note 1) 12 for subslot-PDSCH with proc-Timeline=set2 (Note 1) |
|||
|
Minimum Processing Time (Note 2) |
Xp=4 (proc-Timeline=set1) Xp=6 (proc-Timeline=set2) |
||||
|
Maximum number of HARQ transmission |
4 |
||||
|
Redundancy version coding sequence |
{0,1,2,3} |
||||
|
Number of OFDM symbols for PDCCH |
OFDM symbols |
2 |
|||
|
Note 1: As specified in TS36.211 Table 8.1-2. Note 2: Subslot-PDSCH only. As specified in TS36.213 7.3. |
|||||
8.14.1.1.1 Open-loop spatial multiplexing performance
The requirements are specified in Table 8.14.1.1.1-3, with the addition of the parameters in Table 8.14.1.1.1-1 and Table 8.14.1.1.1-2, and the downlink physical channel setup according to Annex C.3.2.
Table 8.14.1.1.1-1: Test Parameters for PDSCH
|
Parameter |
Unit |
Test 1 |
Test 2 |
|
|
Unused RE-s and PRB-s |
OCNG |
OCNG |
||
|
Cell ID |
0 |
0 |
||
|
Downlink power allocation |
|
dB |
-6 |
-6 |
|
|
dB |
-6 |
-6 |
|
|
σ |
dB |
0 |
0 |
|
|
|
dBm/15kHz |
-98 |
-98 |
|
|
Subframe configuration |
Non-MBSFN |
Non-MBSFN |
||
|
Cell specific reference signal |
Antenna ports 0,1,2,3 |
Antenna ports 0,1,2,3 |
||
|
DL TTI length |
Slot |
Subslot |
||
|
Configured SPDCCH-PRB sets |
{Set 1, Set 2} |
{Set 1, Set 2} |
||
|
SPDCCH-PRB set used for DCI transmission |
Set 1 |
Set 2 |
||
|
Used/Unused SPDCCH resource indication |
N/A |
‘10’ |
||
|
PDSCH transmission mode |
TM3 |
TM3 |
||
|
DCI format |
7-1B |
7-1B |
||
at antenna portTable 8.14.1.1.1-2: SPDCCH-PRB set parameters
|
Parameter |
Unit |
Set 1 |
Set 2 |
|
Refence symbol |
CRS |
CRS |
|
|
Transmission type |
Localized |
Localized |
|
|
Number of OFDM symbols |
1 |
1 |
|
|
Number of PRBs per SPDCCH-PRB set (Note 1) |
16 |
16 |
|
|
Rate Matching mode |
Mode 1 |
Not configured |
|
|
SPDCCH L1 Reuse Indication |
Not configured |
{2, 0} |
|
|
Aggregation level |
SCCE |
2 |
2 |
|
Note 1: The two SPDCCH-PRB sets are non-overlapping with PRB = {0, 1, …, 15} for Set 1, and PRB = {35, 36, …, 49} for Set 2 |
|||
Table 8.14.1.1.1-3: Minimum performance Large Delay CDD (FRC)
|
Test num |
Bandwidth and MCS |
Reference channel |
OCNG pattern |
Propa- gation condi-tion |
Correlation matrix and antenna config. |
Reference value |
UE category |
|
|
Fraction of maximum Throughput (%) |
SNR (dB) |
|||||||
|
1 |
10 MHz 16QAM 0.5 |
R.sTTI.1 FDD |
OP.1 FDD |
EVA30 |
4×2 Low |
70 |
13.6 |
≥2 |
|
2 |
10 MHz 16QAM 0.45 |
R.sTTI.2 FDD |
OP.1 FDD |
EVA30 |
4×2 Low |
70 |
11.6 |
≥2 |
8.14.1.1.2 Closed-loop spatial multiplexing performance (User-Specific Reference Signals)
The requirements are specified in Table 8.14.1.1.2-3, with the addition of the parameters in Table 8.14.1.1.2-1 and Table 8.14.1.1.2-2, and the downlink physical channel setup according to Annex C.3.2.
Table 8.14.1.1.2-1: Test Parameters for PDSCH
|
Parameter |
Unit |
Test 1 |
Test 2 |
|
|
Unused RE-s and PRB-s |
OCNG |
OCNG |
||
|
Cell ID |
0 |
0 |
||
|
Downlink power allocation |
|
dB |
-3 |
-3 |
|
|
dB |
-3 |
-3 |
|
|
σ |
dB |
0 |
0 |
|
|
|
dBm/15kHz |
-98 |
-98 |
|
|
CSI-RS signals |
Antenna ports 15, 16 |
Antenna ports 15, 16 |
||
|
CSI-RS periodicity and subframe offset |
5 / 2 |
5 / 2 |
||
|
CSI-RS configuration |
0 |
0 |
||
|
Zero-power CSI-RS configuration |
Not configured |
Not configured |
||
|
Subframe configuration |
Non-MBSFN |
Non-MBSFN |
||
|
Precoder update granularity |
SREG |
2 |
2 |
|
|
ms |
1 |
1 |
||
|
Beamforming precoder |
Annex B.4.2 |
Annex B.4.2 |
||
|
Cell specific reference signal |
0, 1 |
0, 1 |
||
|
DL TTI length |
Slot |
Subslot |
||
|
DMRS position indicator |
N/A |
0 for subslots 1,3, and 5 1 for subslots 2 and 4 |
||
|
Configured SPDCCH-PRB sets |
{Set 1, Set 2} |
{Set 1, Set 2} |
||
|
SPDCCH-PRB set used for DCI transmission |
Set 1 |
Set 2 |
||
|
Used/Unused SPDCCH resource indication |
’10’ |
N/A |
||
|
PDSCH transmission mode |
TM9 |
TM9 |
||
|
DCI format |
7-1F |
7-1F |
||
at antenna portTable 8.14.1.1.2-2: SPDCCH-PRB set parameters
|
Parameter |
Unit |
Set 1 |
Set 2 |
|
Refence signal |
CRS |
CRS |
|
|
Transmission type |
Localized |
Localized |
|
|
Number of OFDM symbols |
2 |
2 |
|
|
Number of PRBs per SPDCCH-PRB set (Note 1) |
8 |
8 |
|
|
Rate Matching mode |
Not configured |
Mode 1 |
|
|
SPDCCH L1 Reuse Indication |
{1, 1} |
Not configured |
|
|
Aggregation level |
SCCE |
4 |
4 |
|
Note 1: The two SPDCCH-PRB sets are non-overlapping with PRB = {0, 1, …, 7} for Set 1, and PRB = {8, 9, …, 15} for Set 2 |
|||
Table 8.14.1.1.2-3: Minimum performance Large Delay CDD (FRC)
|
Test num |
Bandwidth and MCS |
Reference channel |
OCNG pattern |
Propa- gation condi-tion |
Correlation matrix and antenna config. |
Reference value |
UE category |
|
|
Fraction of maximum Throughput (%) |
SNR (dB) |
|||||||
|
1 |
10 MHz QPSK 1/3 |
R.sTTI.3 FDD |
OP.1 FDD |
EPA5 |
2×2 Low |
70 |
7.1 |
≥2 |
|
2 |
10 MHz QPSK 1/3 |
R.sTTI.4 FDD |
OP.1 FDD |
EPA5 |
2×2 Low |
70 |
8.4 |
≥2 |
8.14.1.2 TDD (Fixed Reference Channel)
The parameters specified in Table 8.14.1.2-1 are valid for TDD unless otherwise stated.
Table 8.14.1.2-1: Common Test Parameters
|
Parameter |
Unit |
Value |
|||
|
Cyclic prefix |
Normal |
||||
|
Cell ID |
0 |
||||
|
Number of HARQ processes |
Processes |
8 (Slot-PDSCH) |
|||
|
Maximum number of HARQ transmission |
4 |
||||
|
Redundancy version coding sequence |
{0,1,2,3} |
||||
|
Number of OFDM symbols for PDCCH |
OFDM symbols |
2 |
|||
|
Uplink downlink configuration (Note 1) |
1 |
||||
|
Special subframe configuration (Note 2) |
4 |
||||
|
ACK/NACK feedback mode |
Multiplexing |
||||
|
Note 1: as specified in Table 4.2-2 in TS 36.211 [4] Note 2: as specified in Table 4.2-1 in TS 36.211 [4] |
|||||
8.14.1.2.1 Open-loop spatial multiplexing performance
The requirements are specified in Table 8.14.1.2.1-3, with the addition of the parameters in Table 8.14.1.2.1-1 and Table 8.14.1.2.1-2, and the downlink physical channel setup according to Annex C.3.2.
Table 8.14.1.2.1-1: Test Parameters for PDSCH
|
Parameter |
Unit |
Test 1 |
|
|
Number of PDCCH symbols |
symbols |
2 |
|
|
Unused RE-s and PRB-s |
OCNG |
||
|
Cell ID |
0 |
||
|
Downlink power allocation |
|
dB |
-6 |
|
|
dB |
-6 |
|
|
σ |
dB |
0 |
|
|
|
dBm/15kHz |
-98 |
|
|
Subframe configuration |
Non-MBSFN |
||
|
Cell specific reference signal |
Antenna ports 0,1,2,3 |
||
|
DL TTI length |
Slot |
||
|
Configured SPDCCH-PRB sets |
{Set 1, Set 2} |
||
|
SPDCCH-PRB set used for DCI transmission |
Set 1 |
||
|
Used/Unused SPDCCH resource indication |
N/A |
||
|
PDSCH transmission mode |
TM3 |
||
|
DCI format |
7-1B |
||
at antenna portTable 8.14.1.2.1-2: SPDCCH-PRB set parameters
|
Parameter |
Unit |
Set 1 |
Set 2 |
|
Refence signal |
CRS |
CRS |
|
|
Transmission type |
Localized |
Localized |
|
|
Number of OFDM symbols |
1 |
1 |
|
|
Number of PRBs per SPDCCH-PRB set (Note 1) |
16 |
16 |
|
|
Rate Matching mode |
Mode 1 |
Not configured |
|
|
SPDCCH L1 Reuse Indication |
Not configured |
{2, 0} |
|
|
Aggregation level |
SCCE |
2 |
2 |
|
Note 1: The two SPDCCH-PRB sets are non-overlapping with PRB = {0, 1, …, 15} for Set 1, and PRB = {35, 36, …, 49} for Set 2 |
|||
Table 8.14.1.2.1-3: Minimum performance Large Delay CDD (FRC)
|
Test num |
Bandwidth and MCS |
Reference channel |
OCNG pattern |
Propa- gation condi-tion |
Correlation matrix and antenna config. |
Reference value |
UE category |
|
|
Fraction of maximum Throughput (%) |
SNR (dB) |
|||||||
|
1 |
10 MHz 16QAM 0.5 |
R.sTTI.1 FDD |
OP.1 TDD |
EVA30 |
4×2 Low |
70 |
13.5 |
≥2 |
8.14.1.2.2 Closed-loop spatial multiplexing performance (User-Specific Reference Signals)
The requirements are specified in Table 8.14.1.2.2-3, with the addition of the parameters in Table 8.14.1.2.2-1 and Table 8.14.1.2.2-2, and the downlink physical channel setup according to Annex C.3.2.
Table 8.14.1.2.2-1: Test Parameters for PDSCH
|
Parameter |
Unit |
Test 1 |
|
|
Number of PDCCH symbols |
symbols |
2 |
|
|
Unused RE-s and PRB-s |
OCNG |
||
|
Cell ID |
0 |
||
|
Downlink power allocation |
|
dB |
-3 |
|
|
dB |
-3 |
|
|
σ |
dB |
0 |
|
|
|
dBm/15kHz |
-98 |
|
|
CSI-RS signals |
Antenna ports 15, 16 |
||
|
CRS-RS periodicity and subframe offset |
5 / 4 |
||
|
CSI-RS configuration |
0 |
||
|
Zero-power CRI-RS configuration |
Not configured |
||
|
Subframe configuration |
Non-MBSFN |
||
|
Precoder update granularity |
SREG |
2 |
|
|
ms |
1 |
||
|
Beamforming precoder |
Annex B.4.2 |
||
|
Cell specific reference signal |
0,1 |
||
|
DL TTI length |
Slot |
||
|
Configured SPDCCH-PRB sets |
{Set 1, Set 2} |
||
|
SPDCCH-PRB set used for DCI transmission |
Set 1 |
||
|
Used/Unused SPDCCH resource indication |
’10’ |
||
|
PDSCH transmission mode |
TM9 |
||
|
DCI format |
7-1F |
||
at antenna portTable 8.14.1.2.2-2: SPDCCH-PRB set parameters
|
Parameter |
Unit |
Set 1 |
Set 2 |
|
Refence symbol |
CRS |
CRS |
|
|
Transmission type |
Localized |
Localized |
|
|
Number of OFDM symbols |
2 |
2 |
|
|
Number of PRBs per SPDCCH-PRB set (Note 1) |
8 |
8 |
|
|
Rate Matching mode |
Not configured |
Mode 1 |
|
|
SPDCCH L1 Reuse Indication |
{1, 1} |
Not configured |
|
|
Aggregation level |
SCCE |
4 |
4 |
|
Note 1: The two SPDCCH-PRB sets are non-overlapping with PRB = {0, 1, …, 7} for Set 1, and PRB = {8, 9, …, 15} for Set 2 |
|||
Table 8.14.1.2.2-3: Minimum performance Large Delay CDD (FRC)
|
Test num |
Bandwidth and MCS |
Reference channel |
OCNG pattern |
Propa- gation condi-tion |
Correlation matrix and antenna config. |
Reference value |
UE category |
|
|
Fraction of maximum Throughput (%) |
SNR (dB) |
|||||||
|
1 |
10 MHz QPSK 1/3 |
R.sTTI.2 TDD |
OP.1 TDD |
EPA5 |
2×2 Low |
70 |
6.8 |
≥2 |
8.14.2 SPDCCH
The receiver characteristics of the SPDCCH are determined by the probability of miss-detection of the Downlink Scheduling Grant (Pm-dsg).
8.14.2.1 FDD
The parameters specified in Table 8.14.2.1-1 and Table 8.14.2.1-2 are valid for all FDD tests unless otherwise stated.
Table 8.14.2.1-1: Test Parameters for SPDCCH
|
Parameter |
Unit |
Test 1 Test 3 |
Test 2 Test 4 |
|
|
Number of PDCCH symbols |
symbols |
2 |
2 |
|
|
Unused RE-s and PRB-s |
OCNG |
OCNG |
||
|
Cell ID |
0 |
0 |
||
|
Downlink power allocation |
|
dB |
-6 |
-3 |
|
|
dB |
-6 |
-3 |
|
|
σ |
dB |
0 |
0 |
|
|
δ |
dB |
N/A |
3 |
|
|
|
dBm/15kHz |
-98 |
-98 |
|
|
Cyclic prefix |
Normal |
Normal |
||
|
Subframe configuration |
Non-MBSFN |
Non-MBSFN |
||
|
Precoder update granularity |
SREG |
N/A |
2 |
|
|
ms |
N/A |
1 |
||
|
Beamforming precoder |
N/A |
Annex B.4.4 |
||
|
Cell specific reference signal |
Antenna ports 0,1,2,3 |
Antenna ports 0,1 |
||
|
Configured SPDCCH-PRB sets |
{Set 1} |
{Set 2} |
||
|
SPDCCH-PRB set used for DCI transmission |
Set 1 |
Set 2 |
||
|
PDSCH transmission mode |
TM4 |
TM9 |
||
|
DCI format |
7-1C |
7-1F |
||
|
Note 1: For slot-based transmission, DCI 7-1C and 7-1F are transmitted only on SPDCCH in slot 1. For subslot-based transmission, DCI 7-1C and 7-1F are transmitted on SPDCCH in all the subslots. |
||||
at antenna portTable 8.14.2.1-2: SPDCCH-PRB set parameters
|
Parameter |
Unit |
Set 1 |
Set 2 |
|
Refence symbol |
CRS |
DMRS |
|
|
Transmission type |
Localized |
Distributed |
|
|
Number of OFDM symbols |
1 |
Note 2 |
|
|
Number of PRBs per SPDCCH-PRB set (Note 1) |
16 |
16 |
|
|
Note 1: The two SPDCCH-PRB sets are non-overlapping with PRB = {0, 1, …, 15} for Set 1 and PRB = {0, 1, 6, 7, 12, 13, 18, 19, 28, 29, 34, 35, 40, 41, 46, 47} for Set 2. Note 2: 2 OFDM symbols for slot-based SPDCCH. 2 OFDM symbols for subslot indices 2, 3, and 4, and 3 OFDM symbols for subslot indices 1 and 5 for subslot-based SPDCCH. |
|||
8.14.2.1.1 Mimimum requirement
For the parameters specified in Table 8.14.2.1-1 and Table 8.14.2.1-2 the average probability of a missed downlink scheduling grant (Pm-dsg) shall be below the specified value in Table 8.14.2.1.1-1. The metric Pm-dsg is calculated across all the slots for slot-based SPDCCH and across all the subslots for subslot-based SPDCCH. The downlink physical setup is in accordance with Annex C.3.2.
Table 8.14.2.1.1-1: Minimum performance SPDCCH
|
Test number |
Bandwidth |
DL TTI length |
Aggregation Level |
Reference Channel |
OCNG Pattern |
Propagation Condition |
Antenna configuration and correlation Matrix |
Reference value |
|
|
Pm-dsg (%) |
SNR (dB) |
||||||||
|
1 |
10 MHz |
Slot |
2 SCCE |
R.sTTI.10 FDD |
OP.7 FDD |
EVA30 |
4 x 2 Low |
1 |
2.9 |
|
2 |
10 MHz |
Slot |
8 SCCE |
R.sTTI.11 FDD |
OP.7 FDD |
EPA5 |
2 x 2 Low |
1 |
1.3 |
|
3 |
10 MHz |
Subslot |
2 SCCE |
R.sTTI.10 FDD |
OP.7 FDD |
EVA30 |
4 x 2 Low |
1 |
2.3 |
|
4 |
10 MHz |
Subslot |
8 SCCE |
R.sTTI.11 FDD |
OP.7 FDD |
EPA5 |
2 x 2 Low |
1 |
0.9 |
8.14.2.2 TDD
The parameters specified in Table 8.14.2.2-1 and Table 8.14.2.2-2 are valid for all TDD tests unless otherwise stated.
Table 8.14.2.2-1: Test Parameters for SPDCCH
|
Parameter |
Unit |
Test 1 |
Test 2 |
|
|
Number of PDCCH symbols |
symbols |
2 |
2 |
|
|
Unused RE-s and PRB-s |
OCNG |
OCNG |
||
|
Cell ID |
0 |
0 |
||
|
Downlink power allocation |
|
dB |
-6 |
-3 |
|
|
dB |
-6 |
-3 |
|
|
σ |
dB |
0 |
0 |
|
|
δ |
dB |
N/A |
3 |
|
|
|
dBm/15kHz |
-98 |
-98 |
|
|
Cyclic prefix |
Normal |
Normal |
||
|
Subframe configuration |
Non-MBSFN |
Non-MBSFN |
||
|
Precoder update granularity |
SREG |
N/A |
2 |
|
|
ms |
N/A |
1 |
||
|
Beamforming precoder |
N/A |
Annex B.4.4 |
||
|
Cell specific reference signal |
Antenna ports 0,1,2,3 |
Antenna ports 0,1 |
||
|
Configured SPDCCH-PRB sets |
{Set 1} |
{Set 2} |
||
|
SPDCCH-PRB set used for DCI transmission |
Set 1 |
Set 2 |
||
|
PDSCH transmission mode |
TM4 |
TM9 |
||
|
DCI format |
7-1C |
7-1F |
||
|
TDD UL/DL Configuration |
0 |
0 |
||
|
TDD Special Subframe |
1 |
1 |
||
|
Note 1: For slot-based transmission, DCI 7-1C and 7-1F are transmitted only on SPDCCH in slot 1. For subslot-based transmission, DCI 7-1C and 7-1F are transmitted on SPDCCH in all the subslots. |
||||
at antenna portTable 8.14.2.2-2: SPDCCH-PRB set parameters
|
Parameter |
Unit |
Set 1 |
Set 2 |
|
Refence symbol |
CRS |
DMRS |
|
|
Transmission type |
Localized |
Distributed |
|
|
Number of OFDM symbols |
1 |
Note 2 |
|
|
Number of PRBs per SPDCCH-PRB set (Note 1) |
16 |
16 |
|
|
Note 1: The two SPDCCH-PRB sets are non-overlapping with PRB = {0, 1, …, 15} for Set 1 and PRB = {0, 1, 6, 7, 12, 13, 18, 19, 28, 29, 34, 35, 40, 41, 46, 47} for Set 2. Note 2: 2 OFDM symbols for slot-based SPDCCH. 2 OFDM symbols for subslot indices 2, 3, and 4, and 3 OFDM symbols for subslot indices 1 and 5 for subslot-based SPDCCH. |
|||
8.14.2.2.1 Mimimum requirement
For the parameters specified in Table 8.14.2.2-1 and Table 8.14.2.2-2 the average probability of a missed downlink scheduling grant (Pm-dsg) shall be below the specified value in Table 8.14.2.2.1-1. The metric Pm-dsg is calculated across all the slots. The downlink physical setup is in accordance with Annex C.3.2.
Table 8.14.2.2.1-1: Minimum performance SPDCCH
|
Test number |
Bandwidth |
DL TTI length |
Aggregation Level |
Reference Channel |
OCNG Pattern |
Propagation Condition |
Antenna configuration and correlation Matrix |
Reference value |
|
|
Pm-dsg (%) |
SNR (dB) |
||||||||
|
1 |
10 MHz |
Slot |
2 SCCE |
R.sTTI.10TDD |
OP.7 TDD |
EVA30 |
4 x 2 Low |
1 |
2.7 |
|
2 |
10 MHz |
Slot |
8 SCCE |
R.sTTI.11 TDD |
OP.7 TDD |
EPA5 |
2 x 2 Low |
1 |
1.2 |