8.2 IAB-MT performance requirements
38.176-23GPPIntegrated Access and Backhaul (IAB) conformance testingNRPart 2: radiated conformance testingRelease 17TS
8.2.1 General
8.2.1.1 Scope and definitions
Radiated performance requirements specify the ability of the IAB-MT type 1-O and IAB-MT type 2-O to correctly demodulate signals in various conditions and configurations. Radiated performance requirements are specified at the RIB.
Radiated performance requirements for the IAB-MT are specified for the fixed reference channels defined in annex A and the propagation conditions in annex J. The requirements only apply to those FRCs that are supported by the IAB-MT.
The radiated performance requirements for IAB-MT type 1-O and for IAB-MT type 2-O are limited to two OTA demodulations branches as described in clause 8.1.1.2. Conformance requirements can only be tested for 1 or 2 demodulation branches depending on the number of polarizations supported by the IAB-MT, with the required SNR applied separately per polarization.
NOTE: IAB-MT can support more than 2 demodulation branches, however OTA conformance testing can only be performed for 1 or 2 demodulation branches.
The SNR used in this clause is specified based on a single carrier and defined as:
SNR = S / N
Where:
S is the total signal energy in the slot on a single TAB connector (for IAB-MT type 1-H).
N is the noise energy in a bandwidth corresponding to the transmission bandwidth over the duration of a slot on a single TAB connector (for IAB-MT type 1-H).
8.2.2 Demodulation performance requirements
8.2.2.1 General
8.2.2.1.1 Applicability rule for IAB-MT
8.2.2.1.1.1 General
Unless otherwise stated, for an IAB-MT declared to support more than 2 demodulation branches (for IAB-MT type 1-O and IAB-MT type 2-O), the performance requirement tests for 2 demodulation branches shall apply, and the mapping between connectors and demodulation branches is up to IAB-MT implementation.
The tests requiring more than [20] dB SNR level are set to N/A in the test requirements.
8.2.2.1.1.2 Applicability of requirements for different subcarrier spacings
Unless otherwise stated, the tests shall apply only for each subcarrier spacing declared to be supported (see D.7 in table 4.6-1).
8.2.2.1.1.3 Applicability of requirements for TDD with different UL-DL patterns
Unless otherwise stated, for each subcarrier spacing declared to be supported, if IAB-MT supports multiple TDD UL-DL patterns, only one of the supported TDD UL-DL patterns shall be used for all tests.
8.2.2.1.1.4 Applicability of requirements for IAB-MT features
Unless otherwise stated, for IAB type 1-O, the PDSCH 256QAM tests (Test 1-1 of Clause 8.2.2.2.5.1) shall apply only for the 256QAM for PDSCH for FR1 declared to be supported (see D.200 in table 4.6-1, pdsch-256QAM-FR1).
Unless otherwise stated, for both IAB type 1-O and IAB type 2-O, the PDSCH tests shall apply only in case the PDSCH MIMO rank in the test case does not exceed the maximum number of PDSCH MIMO layers declared to be supported (see D.202 in table 4.6-1, maxNumberMIMO-LayersPDSCH).
Unless otherwise stated, for IAB type 2-O, the PDSCH tests shall apply only for the PT-RS option declared to be supported (see D.203 in table 4.6-1, onePortsPTRS (MSB)).
Note: Applicability information may be obtained based on vendor declaration (Section 4.6) or alternatively from reading capability signaling.
8.2.2.2 Performance requirements for PDSCH
8.2.2.2.1 Definition and applicability
The performance requirement of PDSCH is determined by a minimum required throughput for a given SNR. The required throughput is expressed as a fraction of maximum throughput for the FRCs listed in annex A. The performance requirements assume HARQ re-transmissions.
Which specific test(s) are applicable to IAB-MT is based on the test applicability rules defined in clause 8.2.2.1.1.
8.2.2.2.2 Minimum requirements
For IAB type 1-O, the minimum requirement is in TS 38.174 [2], clause 11.2.2.1.1.
For IAB type 2-O, the minimum requirement is in TS 38.174 [2], clause 11.2.2.2.1.
8.2.2.2.3 Test purpose
The test shall verify the receiver’s ability to achieve throughput under multipath fading propagation conditions for a given SNR.
8.2.2.2.4 Method of test
8.2.2.2.4.1 Initial conditions
Test environment: Normal, see annex B.2.
RF channels to be tested for single carrier: M, see clause 4.9.1.
RF channels to be tested for carrier aggregation: MBW Channel CA; see clause 4.9.1.
Direction to be tested: OTA REFSENS receiver target reference direction (see D.54 in table 4.6-1).
8.2.2.2.4.2 Test procedure
1) Place the IAB-MT with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.3.
2) Align the manufacturer declared coordinate system orientation of the IAB-MT with the test system.
3) Set the IAB-MT in the declared direction to be tested.
4) Connect the IAB-MT tester generating the wanted signal, multipath fading simulators and AWGN generators to a test antenna via a combining network in OTA test setup, as shown in annex E.3. Each of the demodulation branch signals should be transmitted on one polarization of the test antenna(s).
5) The characteristics of the wanted signal shall be configured according to the corresponding DL reference measurement channel defined in annex A, and according to additional test parameters listed in table 8.2.2.2.4.2-1.
Table: 8.2.2.2.4.2-1 Test parameters for testing PDSCH
|
Parameter |
IAB type 1-O |
IAB type 2-O |
|
|
Cyclic prefix |
Normal |
Normal |
|
|
Default TDD UL-DL pattern (Note) |
7D1S2U, S=6D:4G:4U |
3D1S1U, S=10D:2G:2U |
|
|
HARQ |
Maximum number of HARQ transmissions |
4 |
4 |
|
RV sequence |
0, 2, 3, 1 |
0, 2, 3, 1 |
|
|
DM-RS |
DM-RS configuration type |
1 |
1 |
|
DM-RS duration |
single-symbol DM-RS |
single-symbol DM-RS |
|
|
DM-RS position (l0) |
2 |
2 |
|
|
Additional DM-RS position |
pos1 |
pos1 |
|
|
Number of DM-RS CDM group(s) without data |
1 for Rank 1 and Rank 2 tests |
1 |
|
|
DM-RS port(s) |
{1000} for Rank 1 tests |
{1000} for Rank 1 tests |
|
|
DM-RS sequence generation |
NID0=0 |
NID0=0 |
|
|
Time domain resource assignment |
PDSCH mapping type |
A |
A |
|
Start symbol |
2 |
1 |
|
|
Allocation length |
12 |
13 |
|
|
Frequency domain resource assignment |
RB assignment |
Full applicable test bandwidth |
Full applicable test bandwidth |
|
PT-RS configuration |
Frequency density (KPT-RS) |
Not configured |
2 |
|
Time density (LPT-RS) |
1 |
||
|
PRB bundling size |
2 |
2 |
|
|
VRB-to-PRB mapping type |
Not interleaved |
Not interleaved |
|
|
PDSCH & PDSCH DMRS Precoding configuration |
Single Panel Type I, Random precoder selection updated per slot, with equal probability of each applicable i1, i2 combination, and with PRB bundling granularity |
Single Panel Type I, Random precoder selection updated per slot, with equal probability of each applicable i1, i2 combination, and with PRB bundling granularity |
|
|
Note: The same requirements are applicable to TDD with different UL-DL patterns. |
|||
6) The multipath fading emulators shall be configured according to the corresponding channel model defined in annex J.
7) Adjust the test signal mean power so the calibrated radiated SNR value at the IAB-MT receiver is as specified in clause 8.2.2.2.5.1 and 8.2.2.2.5.2 for IAB type 1-O and IAB type 2-O respectively, and that the SNR at the IAB receiver is not impacted by the noise floor.
The power level for the transmission may be set such that the AWGN level at the RIB is equal to the AWGN level in table 8.2.2.2.4.2-2.
Table 8.2.2.2.4.2-2: AWGN power level at the IAB-MT input
|
IAB type |
Sub-carrier spacing (kHz) |
Channel bandwidth (MHz) |
AWGN power level |
|
IAB type 1-O |
30 |
40 |
-77.2 – ΔOTAREFSENS dBm / 38.16 MHz |
|
IAB type 2-O |
60 |
50 |
EISREFSENS_50M + ΔFR2_REFSENS + 15 dBm / 47.52 MHz |
|
120 |
100 |
EISREFSENS_50M + ΔFR2_REFSENS + 18 dBm / 95.04 MHz |
|
|
NOTE 1: ΔOTAREFSENS as declared in D.53 in table 4.6-1 and clause 7.1. NOTE 2: ΔFR2_REFSENS = -3 dB as described in clause 7.1, since the OTA REFSENS reference direction (as declared in D.54 in table 4.6-1) is used for testing. NOTE 3: EISREFSENS_50M as declared in D.28 in table 4.6-1. |
|||
8) For reference channels applicable to the IAB, measure the throughput.
8.2.2.2.5 Test requirements
8.2.2.2.5.1 Test requirement for IAB type 1-O
The throughput shall be equal to or larger than the fraction of maximum throughput for the FRCs stated in Tables 8.2.2.2.5.1-1 and 8.2.2.2.5.1-2 at the given SNR with the test parameters stated in Table 8.2.2.2.4.2-1.
Table 8.2.2.2.5.1-1: Minimum requirements for PDSCH Type A with Rank 1
|
Test number |
FRC (Annex A) |
Bandwidth (MHz) / Subcarrier spacing (kHz) |
Propagation conditions (Annex J) |
Antenna configuration |
Fraction of maximum throughput (%) |
SNR (dB) |
|
1-1 |
M-FR1-A.3.3-1 |
40/30 |
TDLA30-10 |
2×2, ULA Low |
70 |
26.3 |
|
1-2 |
M-FR1-A.3.1-1 |
40/30 |
TDLA30-10 |
2×2, ULA Low |
30 |
3.2 |
Table 8.2.2.2.5.1-2: Minimum requirements for PDSCH Type A with Rank 2
|
Test number |
FRC (Annex A) |
Bandwidth (MHz) / Subcarrier spacing (kHz) |
Propagation conditions (Annex J) |
Antenna configuration |
Fraction of maximum throughput (%) |
SNR (dB) |
|
2-1 |
M-FR1-A.3.2-1 |
40/30 |
TDLA30-10 |
2×2, ULA Low |
70 |
20.8 |
8.2.2.2.5.2 Test requirement for IAB type 2-O
The throughput shall be equal to or larger than the fraction of maximum throughput for the FRCs stated in Tables 8.2.2.2.5.2-1 and 8.2.2.2.5.2-2 at the given SNR with the test parameters stated in Table 8.2.2.2.4.2-1.
Table 8.2.2.2.5.2-1: Minimum requirements for PDSCH Type A with Rank 1
|
Test number |
FRC (Annex A) |
Bandwidth (MHz) / Subcarrier spacing (kHz) |
Propagation conditions (Annex J) |
Antenna configuration |
Fraction of maximum throughput (%) |
SNR (dB) |
|
1-1 |
M-FR2-A.3.1-1 |
100/120 |
TDLA30-75 |
2×2, ULA Low |
30 |
4.1 |
|
1-2 |
M-FR2-A.3.2-1 |
100/120 |
TDLA30-75 |
2×2, ULA Low |
70 |
13.5 |
Table 8.2.2.2.5.2-2: Minimum requirements for PDSCH Type A with Rank 2
|
Test number |
FRC (Annex A) |
Bandwidth (MHz) / Subcarrier spacing (kHz) |
Propagation conditions (Annex J) |
Antenna configuration |
Fraction of maximum throughput (%) |
SNR (dB) |
|
2-1 |
M-FR2-A.3.1-2 |
100/120 |
TDLA30-75 |
2×2, ULA Low |
70 |
15.9 |
|
2-2 |
M-FR2-A.3.1-3 |
50/60 |
TDLA30-75 |
2×2, ULA Low |
70 |
16.0 |
|
2-3 |
M-FR2-A.3.2-2 |
100/120 |
TDLA30-75 |
2×2, ULA Low |
70 |
20.3 |
8.2.2.3 Demodulation performance requirements for PDCCH
8.2.2.3.1 Definition and applicability
The receiver characteristics of the PDCCH are determined by the probability of miss-detection of the Downlink Scheduling Grant (Pm-dsg).
Which specific test(s) are applicable to IAB-MT is based on the test applicability rules defined in clause 8.2.2.1.1.
8.2.2.3.2 Minimum requirement
For IAB type 1-O, the minimum requirement is in TS 38.174 [2], clause 11.2.2.1.2.
For IAB type 2-O, the minimum requirement is in TS 38.174 [2], clause 11.2.2.2.2.
8.2.2.3.3 Test purpose
The test shall verify the receiver’s ability to detect the Downlink Scheduling Grant (Pm-dsg) under multipath fading propagation conditions for a given SNR.
8.2.2.3.4 Method of test
8.2.2.3.4.1 Initial conditions
Test environment: Normal, see annex B.2.
RF channels to be tested for single carrier: M, see clause 4.9.1.
RF channels to be tested for carrier aggregation: MBW Channel CA; see clause 4.9.1.
Direction to be tested: OTA REFSENS receiver target reference direction (see D.54 in table 4.6-1).
8.2.2.3.4.2 Test procedure
1) Place the IAB-MT with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.3.
2) Align the manufacturer declared coordinate system orientation of the IAB-MT with the test system.
3) Set the IAB-MT in the declared direction to be tested.
4) Connect the IAB-MT tester generating the wanted signal, multipath fading simulators and AWGN generators to a test antenna via a combining network in OTA test setup, as shown in annex E.3. Each of the demodulation branch signals should be transmitted on one polarization of the test antenna(s).
5) The characteristics of the wanted signal shall be configured according to the corresponding DL reference measurement channel defined in annex A, and according to additional test parameters listed in table 8.2.2.3.4.2-1.
Table: 8.2.2.3.4.2-1 Test parameters for testing PDSCH
|
Parameter |
IAB type 1-O |
IAB-type 2-O |
|
Cyclic prefix |
Normal |
Normal |
|
Default TDD UL-DL pattern (Note) |
7D1S2U, S=6D:4G:4U |
3D1S1U, S=10D:2G:2U |
|
DM-RS sequence generation |
NID=0 |
NID=0 |
|
Frequency domain resource allocation for CORESET |
Start from RB = 0 with contiguous RB allocation |
Start from RB = 0 with contiguous RB allocation |
|
CCE to REG mapping type |
Interleaved |
Interleaved |
|
Interleaver size |
3 |
3 for test with aggregation level 2, 8 |
|
REG bundle size |
2 for test with aggregation level 2, 4 6 for test with aggregation level 8 |
2 for test with aggregation level 2, 8 |
|
Shift Index |
0 |
0 |
|
Slots for PDCCH monitoring |
Each slot |
Each slot |
|
Number of PDCCH candidates for the tested aggregation level |
1 |
1 |
|
PDCCH Precoding configuration |
Single Panel Type I, Random precoder selection updated per slot, with equal probability of each applicable i1, i2 combination with REG bundling granularity for number of Tx larger than 1 |
Single Panel Type I, Random precoder selection updated per slot, with equal probability of each applicable i1, i2 combination with REG bundling granularity for number of Tx larger than 1 |
|
Note: The same requirements are applicable to TDD with different UL-DL patterns. |
||
6) The multipath fading emulators shall be configured according to the corresponding channel model defined in annex J.
7) Adjust the test signal mean power so the calibrated radiated SNR value at the IAB-MT receiver is as specified in clause 8.2.2.3.5.1 and 8.2.2.3.5.2 for IAB type 1-O and IAB type 2-O respectively, and that the SNR at the IAB receiver is not impacted by the noise floor.
The power level for the transmission may be set such that the AWGN level at the RIB is equal to the AWGN level in table 8.2.2.3.4.2-2.
Table 8.2.2.3.4.2-2: AWGN power level at the IAB-MT input
|
IAB type |
Sub-carrier spacing (kHz) |
Channel bandwidth (MHz) |
AWGN power level |
|
IAB type 1-O |
30 |
40 |
-77.2 – ΔOTAREFSENS dBm / 38.16 MHz |
|
IAB type 2-O |
60 |
50 |
EISREFSENS_50M + ΔFR2_REFSENS + 15 dBm / 47.52 MHz |
|
120 |
100 |
EISREFSENS_50M + ΔFR2_REFSENS + 18 dBm / 95.04 MHz |
|
|
NOTE 1: ΔOTAREFSENS as declared in D.53 in table 4.6-1 and clause 7.1. NOTE 2: ΔFR2_REFSENS = -3 dB as described in clause 7.1, since the OTA REFSENS reference direction (as declared in D.54 in table 4.6-1) is used for testing. NOTE 3: EISREFSENS_50M as declared in D.28 in table 4.6-1. |
|||
8) For reference channels applicable to the IAB, measure the miss-detection of the Downlink Scheduling Grant (Pm-dsg).
8.2.2.3.5 Test requirements
8.2.2.3.5.1 Test requirement for IAB type 1-O
The Pm-dsg shall be equal to or smaller than 1%, for the cases stated in Table 8.2.2.3.5.1-1 at the given SNR with the test parameters stated in Table 8.2.2.3.4.2-1.
Table 8.2.2.3.5.1-1: Minimum requirements for PDCCH
|
Test number |
Bandwidth (MHz) / Subcarrier spacing (kHz) |
CORESET RB |
CORESET duration |
Aggregation level |
FRC (Annex A) |
Propagation conditions (Annex J) |
Antenna configuration |
Pm-dsg (%) |
SNR (dB) |
|
1 |
40/30 |
102 |
1 |
2 |
M-FR1-A.3.4-1 |
TDLA30-10 |
1×2, ULA Low |
1 |
7.9 |
|
2 |
40/30 |
102 |
1 |
4 |
M-FR1-A.3.4-1 |
TDLA30-10 |
1×2, ULA Low |
1 |
5.8 |
|
3 |
40/30 |
90 |
1 |
8 |
M-FR1-A.3.4-1 |
TDLA30-10 |
2×2, ULA Low |
1 |
0.3 |
8.2.2.3.5.2 Test requirement for IAB type 2-O
The Pm-dsg shall be equal to or smaller than 1%, for the cases stated in Table 8.2.2.3.5.2-1 at the given SNR with the test parameters stated in Table 8.2.2.3.4.2-1.
Table 8.2.2.3.5.2-1: Minimum requirements for PDCCH
|
Test number |
Bandwidth (MHz) / Subcarrier spacing (kHz) |
CORESET RB |
CORESET duration |
Aggregation level |
FRC (Annex A) |
Propagation conditions (Annex J) |
Antenna configuration |
Pm-dsg (%) |
SNR (dB) |
|
1 |
100/120 |
60 |
1 |
2 |
M-FR2-A.3.4-1 |
TDLA30-75 |
1×2, ULA Low |
1 |
8.1 |
|
2 |
100/120 |
60 |
1 |
4 |
M-FR2-A.3.4-2 |
TDLA30-75 |
1×2, ULA Low |
1 |
4.6 |
|
3 |
100/120 |
60 |
1 |
8 |
M-FR2-A.3.4-3 |
TDLA30-75 |
2×2, ULA Low |
1 |
1.9 |
8.2.3 CSI reporting requirements
8.2.3.1 General
8.2.3.1.1 Applicability of requirements
8.2.3.1.1.1 General
Unless otherwise stated, for a IAB-MT declared to support more than 2 demodulation branches (for IAB-MT type 1-O and IAB-MT type 2-O), the performance requirement tests for 2 demodulation branches shall apply, and the mapping between connectors and demodulation branches is up to IAB-MT implementation.
The tests requiring more than [20] dB SNR level are set to N/A in the test requirements.
8.2.3.1.1.2 Applicability of requirements for different subcarrier spacings
Unless otherwise stated, the tests shall apply only for each subcarrier spacing declared to be supported (see D.7 in table 4.6-1).
8.2.3.1.1.3 Applicability of requirements for TDD with different UL-DL patterns
Unless otherwise stated, for each subcarrier spacing declared to be supported, if IAB-MT supports multiple TDD UL-DL patterns, only one of the supported TDD UL-DL patterns shall be used for all tests.
8.2.3.1.1.4 Applicability of PMI/RI requirements
Testing of performance requirements for RI and PMI reporting is optional.
8.2.3.1.1.5 Applicability of requirements for IAB-MT features
Unless otherwise stated, for IAB type 1-O, the CSI reporting tests (clauses 8.2.3.3, 8.2.3.4) shall apply only in case the number of NZP-CSI-RS ports in the test case satisfies maximum number of ports across all configured NZP-CSI-RS resources per CC declared to be supported (see D.201 in table 4.6-1, maxConfigNumberPortsAcrossNZP-CSI-RS-PerCC).
Unless otherwise stated, for IAB type 1-O, the CSI reporting tests (clauses 8.2.3.2, 8.2.3.3, 8.2.3.4) shall apply only in case the PDSCH MIMO rank in the test case does not exceed the maximum number of PDSCH MIMO layers declared to be supported (see D.202 in table 4.6-1, maxNumberMIMO-LayersPDSCH).
Unless otherwise stated, for IAB type 2-O, the CSI reporting tests (clauses 8.2.3.2, 8.2.3.3, 8.2.3.4) shall apply only for the PT-RS option declared to be supported (see D.203 in table 4.6-1, onePortPTRS).
NOTE: Applicability information may be obtained based on vendor declaration (Section 4.6) or alternatively from reading capability signaling.
8.2.3.1.2 Common test parameters
Parameters specified in Table 8.2.3.1.2-1 are applied for all test cases in this clause unless otherwise stated.
Table 8.2.3.1.2-1: Test parameters for CSI test cases
|
Parameter |
Unit |
Value FR1 |
Value FR2 |
||
|
PDSCH transmission scheme |
Transmission scheme 1 |
Transmission scheme 1 |
|||
|
Duplex mode |
TDD |
TDD |
|||
|
PTRS epre-Ratio |
N/A |
0 |
|||
|
Actual carrier configuration |
Offset between Point A and the lowest usable subcarrier on this carrier (Note 3) |
RBs |
0 |
0 |
|
|
Subcarrier spacing |
kHz |
30 |
120 |
||
|
DL BWP configuration #1 |
Cyclic prefix |
Normal |
Normal |
||
|
RB offset |
RBs |
0 |
0 |
||
|
Number of contiguous PRB |
PRBs |
106 |
66 |
||
|
Active DL BWP index |
1 |
1 |
|||
|
PDSCH configuration |
Mapping type |
Type A |
Type A |
||
|
k0 |
0 |
0 |
|||
|
Starting symbol (S) |
2 |
2 |
|||
|
Length (L) |
12 |
12 |
|||
|
PDSCH aggregation factor |
1 |
1 |
|||
|
PRB bundling type |
Static |
Static |
|||
|
PRB bundling size |
2 |
2 |
|||
|
Resource allocation type |
Type 0 |
type 0 |
|||
|
RBG size |
Config 2 |
||||
|
VRB-to-PRB mapping type |
Non-interleaved |
Non-interleaved |
|||
|
VRB-to-PRB mapping interleaver bundle size |
N/A |
N/A |
|||
|
PDSCH DMRS configuration |
DMRS Type |
Type 1 |
Type 1 |
||
|
Number of additional DMRS |
1 |
1 |
|||
|
Maximum number of OFDM symbols for DL front loaded DMRS |
1 |
1 |
|||
|
DMRS ports indexes |
{1000} |
{1000} |
|||
|
Number of PDSCH DMRS CDM group(s) without data |
2 |
2 |
|||
|
PTRS configuration |
Frequency density (KPT-RS) |
N/A |
2 |
||
|
Time density (LPT-RS) |
N/A |
1 |
|||
|
Resource Element Offset |
N/A |
2 |
|||
|
NZP CSI-RS for CSI acquisition |
Frequency Occupation |
Start PRB 0 Number of PRB = BWP size |
Start PRB 0 Number of PRB = BWP size |
||
|
Redundancy version coding sequence |
{0,2,3,1} |
{0,2,3,1} |
|||
|
Note 1: PDSCH is not scheduled on slots containing CSI-RS or slots which are not full DL. Note 2: Point A coincides with minimum guard band as specified in Table 5.3.3-1 from TS 38.101-1 [16] or 38.101-2 [17] for tested channel bandwidth and subcarrier spacing. |
|||||
8.2.3.2 Reporting of Channel Quality Indicator (CQI)
8.2.3.2.1 Definition and applicability
The performance requirement of CSI reporting is determined by the reporting variance and the BLER performance using the transport format indicated by the reported CQI. The purpose is to verify that the reported CQI values are in accordance with the CQI definition given in TS 38.214 [27]. To account for sensitivity of the input SNR the reporting definition is considered to be verified if the reporting accuracy is met for at least one of two SNR levels separated by an offset of 1 dB.
8.2.3.2.2 Minimum requirement
The minimum requirement for IAB-MT type 1-O is in TS 38.174 [2] clause 11.2.3.1.1
The minimum requirement for IAB-MT type 2-O is in TS 38.174 [2] clause 11.2.3.2.2.
8.2.3.2.3 Test purpose
The test shall verify the receiver’s ability to report correct median CQI and expected BLER performance under AWGN conditions.
8.2.3.2.4 Method of test
8.2.3.2.4.1 Initial conditions
Test environment: Normal, see annex B.2.
RF channels to be tested for single carrier: M; see clause 4.9.1.
RF channels to be tested for carrier aggregation: MBW Channel CA; see clause 4.9.1.
Direction to be tested: OTA REFSENS receiver target reference direction (see D.54 in table 4.6-1).
8.2.3.2.4.2 Procedure
1) Place the IAB-MT with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.3.
2) Align the manufacturer declared coordinate system orientation of the IAB-MT with the test system.
3) Set the IAB-MT in the declared direction to be tested.
4) Connect the IAB-MT tester generating the wanted signal and AWGN generators to a test antenna via a combining network in OTA test setup, as shown in annex E.3. Each of the demodulation branch signals should be transmitted on one polarization of the test antenna(s).
5) The characteristics of the wanted signal shall be configured according to the corresponding DL reference measurement channel defined in annex A, and according to additional test parameters listed in table 8.2.3.2.4.2-2 or 8.2.3.2.4.2-2.
Table 8.2.3.2.4.2-1: Test parameters for testing CQI reporting requirements for FR1
|
Parameter |
Unit |
Test 1 |
Test 2 |
||||
|
Bandwidth |
MHz |
40 |
|||||
|
Subcarrier spacing |
kHz |
30 |
|||||
|
Duplex Mode |
TDD |
||||||
|
SNR |
dB |
8 |
9 |
14 |
15 |
||
|
Propagation channel |
AWGN |
||||||
|
Antenna configuration |
2×2 with static channel specified in Annex J.1 |
||||||
|
Beamforming Model |
As specified in Annex J.3.1 |
||||||
|
NZP CSI-RS for CSI acquisition |
CSI-RS resource Type |
Periodic |
|||||
|
Number of CSI-RS ports (X) |
2 |
||||||
|
CDM Type |
FD-CDM2 |
||||||
|
Density (ρ) |
1 |
||||||
|
First subcarrier index in the PRB used for CSI-RS (k0, k1 ) |
Row 3,(6,-) |
||||||
|
First OFDM symbol in the PRB used for CSI-RS (l0) |
13 |
||||||
|
NZP CSI-RS-timeConfig periodicity and offset |
slot |
10/1 |
|||||
|
CSI-IM configuration |
CSI-IM resource Type |
Periodic |
|||||
|
CSI-IM RE pattern |
0 |
||||||
|
CSI-IM Resource Mapping (kCSI-IM,lCSI-IM) |
(4, 9) |
||||||
|
CSI-IM timeConfig periodicity and offset |
slot |
10/1 |
|||||
|
ReportConfigType |
Periodic |
||||||
|
CQI-table |
Table 2 |
||||||
|
reportQuantity |
cri-RI-PMI-CQI |
||||||
|
cqi-FormatIndicator |
Wideband |
||||||
|
pmi-FormatIndicator |
Wideband |
||||||
|
Sub-band Size |
RB |
16 |
|||||
|
Csi-ReportingBand |
1111111 |
||||||
|
CSI-Report periodicity and offset |
slot |
10/9 |
|||||
|
Codebook configuration |
Codebook Type |
typeI-SinglePanel |
|||||
|
Codebook Mode |
1 |
||||||
|
(CodebookConfig-N1,CodebookConfig-N2) |
Not configured |
||||||
|
CodebookSubsetRestriction |
010000 |
||||||
|
RI Restriction |
N/A |
||||||
|
CQI/RI/PMI delay |
ms |
9.5 |
|||||
|
Maximum number of HARQ transmission |
1 |
||||||
|
Measurement channel |
As specified in Table A.2.6-1, M-FR1-A.3.5-1 |
||||||
Table 8.2.3.2.4.2-2: Test parameters for testing CQI reporting requirements for FR2
|
Parameter |
Unit |
Test 1 |
Test 2 |
||||
|
Bandwidth |
MHz |
100 |
|||||
|
Subcarrier spacing |
kHz |
120 |
|||||
|
Duplex Mode |
TDD |
||||||
|
SNRBB |
dB |
8 |
9 |
14 |
15 |
||
|
Propagation channel |
AWGN |
||||||
|
Antenna configuration |
2×2 with static channel specified in Annex J.1 |
||||||
|
Beamforming Model |
As specified in Annex J.3.1 |
||||||
|
NZP CSI-RS for CSI acquisition |
CSI-RS resource Type |
Periodic |
|||||
|
Number of CSI-RS ports (X) |
2 |
||||||
|
CDM Type |
fd-CDM2 |
||||||
|
Density (ρ) |
1 |
||||||
|
First subcarrier index in the PRB used for CSI-RS (k0, k1 ) |
6 |
||||||
|
First OFDM symbol in the PRB used for CSI-RS (l0, l1) |
13 |
||||||
|
NZP CSI-RS-timeConfig periodicity and offset |
slot |
8/1 |
|||||
|
CSI-IM configuration |
CSI-IM resource Type |
Periodic |
|||||
|
CSI-IM RE pattern |
1 |
||||||
|
CSI-IM Resource Mapping (kCSI-IM,lCSI-IM) |
(8, 13) |
||||||
|
CSI-IM timeConfig periodicity and offset |
slot |
8/1 |
|||||
|
ReportConfigType |
Periodic |
||||||
|
CQI-table |
Table 1 |
||||||
|
reportQuantity |
cri-RI-PMI-CQI |
||||||
|
timeRestrictionForChannelMeasurements |
Not configured |
||||||
|
timeRestrictionForInterferenceMeasurements |
Not configured |
||||||
|
cqi-FormatIndicator |
Wideband |
||||||
|
pmi-FormatIndicator |
Wideband |
||||||
|
Sub-band Size |
RB |
8 |
|||||
|
csi-ReportingBand |
111111111 |
||||||
|
CSI-Report periodicity and offset |
slot |
8/3 |
|||||
|
Codebook configuration |
Codebook Type |
typeI-SinglePanel |
|||||
|
Codebook Mode |
1 |
||||||
|
(CodebookConfig-N1,CodebookConfig-N2) |
Not configured |
||||||
|
CodebookSubsetRestriction |
010000 |
||||||
|
RI Restriction |
N/A |
||||||
|
CQI/RI/PMI delay |
ms |
8.375 |
|||||
|
Maximum number of HARQ transmission |
1 |
||||||
|
Measurement channel |
As specified in Table A.2.6-3, M-FR2-A.3.5-2 |
||||||
7) Adjust the test signal mean power so the calibrated radiated SNR value at the IAB-MT receiver is as specified in clause 8.2.3.2.5.1 and 8.2.3.2.5.2 for IAB type 1-O and IAB type 2-O respectively, and that the SNR at the IAB-MT receiver is not impacted by the noise floor.
The power level for the transmission may be set such that the AWGN level at the RIB is equal to the AWGN level in table 8.2.3.2.4.2-2.
Table 8.2.3.2.4.2-2: AWGN power level at the IAB-MT input
|
BS type |
Sub-carrier spacing (kHz) |
Channel bandwidth (MHz) |
AWGN power level |
|
IAB-MT type 1-O |
30 |
40 |
-77.2 – ΔOTAREFSENS dBm / 38.16 MHz |
|
IAB-MT type 2-O |
120 |
100 |
EISREFSENS_50M + ΔFR2_REFSENS + 18 dBm / 95.04 MHz |
|
NOTE 1: ΔOTAREFSENS as declared in D.53 in table 4.6-1 and clause 7.1. NOTE 2: ΔFR2_REFSENS = -3 dB as described in clause 7.1, since the OTA REFSENS reference direction (as declared in D.54 in table 4.6-1) is used for testing. NOTE 3: EISREFSENS_50M as declared in D.28 in table 4.6-1. |
|||
8) For reference channels applicable to the IAB-MT, measure the median CQI and the BLER at (median CQI +1) and (median CQI -1).
8.2.3.2.5 Test requirement
8.2.3.2.5.1 Test requirement for IAB type 1-O
For the parameters specified in Table 8.2.3.2.4.2-1, the minimum requirements are specified by the following:
a) The reported CQI value according to the reference channel shall be in the range of ±1 of the reported median more than 90% of the time.
b) If the PDSCH BLER using the transport format indicated by median CQI is less than or equal to 0.1, then the BLER using the transport format indicated by the (median CQI+1) shall be greater than 0.1. If the PDSCH BLER using the transport format indicated by the median CQI is greater than 0.1, then the BLER using transport format indicated by (median CQI-1) shall be less than or equal to 0.1.
8.2.3.2.5.2 Test requirement for IAB type 2-O
For the parameters specified in Table 8.2.3.2.4.2-2, the minimum requirements are specified by the following:
a) the reported CQI value shall be in the range of ±1 of the reported median more than 90% of the time;
b) if the PDSCH BLER using the transport format indicated by median CQI is less than or equal to 0.1, the BLER using the transport format indicated by the (median CQI + 1) shall be greater than 0.1. If the PDSCH BLER using the transport format indicated by the median CQI is greater than 0.1, the BLER using transport format indicated by (median CQI – 1) shall be less than or equal to 0.1.
8.2.3.3 Reporting of Precoding Matrix Information (PMI)
8.2.3.3.1 Definition and applicability
The minimum performance requirements of PMI reporting are defined based on the precoding gain, expressed as the relative increase in throughput when the transmitter is configured according to the IAB-MT reported PMI compared to the case when the transmitter is using random precoding, respectively. When the transmitter uses random precoding, for each PDSCH allocation a precoder is randomly generated with equal probability of each applicable i1 and i2 combination and applied to the PDSCH. A fixed transport format (FRC) is configured for all requirements.
The requirements for transmission mode 1 with higher layer parameter codebookType set to ‘typeI-SinglePanel’ are specified in terms of the ratio:
In the definition of γ, for 4TX, 8TX PMI requirements, 
is 90 % of the maximum throughput obtained at 
using the precoders configured according to the IAB-MT reports, and 
is the throughput measured at 
with random precoding.
8.2.3.3.2 Minimum requirement
The minimum requirement for IAB-MT type 1-O is in TS 38.174 [2] clause 11.2.3.1.2.
The minimum requirement for IAB-MT type 2-O is in TS 38.174 [2] clause 11.2.3.2.3.
8.2.3.3.3 Test purpose
The test shall verify the receiver’s ability to report correct PMI under the defined fading conditions.
8.2.3.3.4 Method of test
8.2.3.3.4.1 Initial conditions
Test environment: Normal, see annex B.2.
RF channels to be tested for single carrier: M; see clause 4.9.1.
RF channels to be tested for carrier aggregation: MBW Channel CA; see clause 4.9.1.
Direction to be tested: OTA REFSENS receiver target reference direction (see D.54 in table 4.6-1).
8.2.3.3.4.2 Procedure
1) Place the IAB-MT with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.3.
2) Align the manufacturer declared coordinate system orientation of the IAB-MT with the test system.
3) Set the IAB-MT in the declared direction to be tested.
4) Connect the IAB-MT tester generating the wanted signal and AWGN generators to a test antenna via a combining network in OTA test setup, as shown in annex E.3. Each of the demodulation branch signals should be transmitted on one polarization of the test antenna(s).
5) The characteristics of the wanted signal shall be configured according to the corresponding DL reference measurement channel defined in annex A, and according to additional test parameters listed in table 8.2.3.3.4.2-1.
Table 8.2.3.3.4.2-1: Test parameters for testing PMI reporting requirements
|
Parameter |
Unit |
FR1 |
FR2 |
|
|---|---|---|---|---|
|
Bandwidth |
MHz |
40 |
100 |
|
|
Subcarrier spacing |
kHz |
30 |
120 |
|
|
Duplex Mode |
TDD |
TDD |
||
|
TDD DL-UL configuration |
7D1S2U, S=6D:4G:4U |
3D1S1U, S=10D:2G:2U |
||
|
Propagation channel |
TDLA30-5 |
TDLA30-35 |
||
|
Antenna configuration |
High XP 4 x 2 (N1,N2) = (2,1) High XP 8 x 2 (N1,N2) = (4,1) |
2 x 2 ULA Low |
||
|
Beamforming Model |
As specified in Annex J.3.1 |
As specified in Annex J.3.1 |
||
|
NZP CSI-RS for CSI acquisition |
CSI-RS resource Type |
Periodic |
||
|
Number of CSI-RS ports (X) |
Test for 4 TX ports: 4 Test for 8 TX ports: 8 |
2 |
||
|
CDM Type |
Test for 4 TX ports: FD-CDM2 Test for 8 TX ports: CDM4 (FD2, TD2) |
FD-CDM2 |
||
|
Density (ρ) |
1 |
1 |
||
|
First subcarrier index in the PRB used for CSI-RS (k0, k1) |
Test for 4 TX ports: Row 4 (0,-) Test for 8 TX ports: Row 8, (4,6) |
Row 3, (6,-) |
||
|
First OFDM symbol in the PRB used for CSI-RS (l0, l1) |
Test for 4 TX ports, 2RX: (13,-) Test for 8 TX ports: (5,-) |
(13,-) |
||
|
CSI-RS interval and offset |
Slot |
10/1 |
8/1 |
|
|
ReportConfigType |
Periodic |
Periodic |
||
|
Sub-band Size |
RB |
16 |
8 |
|
|
csi-ReportingBand |
1111111 |
111111111 |
||
|
CSI-Report periodicity and offset |
slot |
10/9 |
8/3 |
|
|
pmi-FormatIndicator |
Wideband |
Wideband |
||
|
Codebook configuration |
Codebook Type |
typeI-SinglePanel |
typeI-SinglePanel |
|
|
Codebook Mode |
1 |
1 |
||
|
(CodebookConfig-N1,CodebookConfig-N2) |
Test for 4 TX ports: (2,1) Test for 8 TX ports: (4,1) |
NA |
||
|
(CodebookConfig-O1,CodebookConfig-O2) |
Test for 4 TX ports: (4,1) Test for 8 TX ports: (4,1) |
NA |
||
|
CodebookSubsetRestriction |
Test for 4 TX ports: 11111111 Test for 8 TX ports: 0x FFFF |
001111 |
||
|
RI Restriction |
Test for 4 TX ports: 00000001 Test for 8 TX ports: 00000010 |
NA |
||
|
Maximum number of HARQ transmission |
4 |
4 |
||
|
CQI/RI/PMI delay |
ms |
5.5 |
1.375 |
|
|
Measurement channel |
Test for 4 TX ports: M-FR1-A.3.5-1 Test for 8 TX ports: M-FR1-A.3.5-2 |
M-FR2-A.3.5-3 |
||
|
Note 1: The same requirements are applicable for TDD with different UL-DL pattern. Note 2: When Throughput is measured using random precoder selection, the precoder shall be updated in each slot (0.5 ms FR1 / 0.125 ms FR2 granularity) with equal probability of each applicable i1, i2 combination. Note 3: If the IAB-MT reports in an available uplink reporting instance at slot #n based on PMI estimation at a downlink slot not later than slot#(n-4), this reported PMI cannot be applied at the gNB downlink before slot#(n+4). Note 4: Randomization of the principle beam direction shall be used as specified in Annex J.2.3.2.3. Note 5: SSB, TRS, CSI-RS and/or other unspecified test parameters with respect to TS 38.101-4 [18] are left up to test implementation, if transmitted or needed. |
||||
7) Adjust the test signal mean power so the calibrated radiated SNR value at the IAB-MT receiver is as specified in clause 8.2.3.3.5.1 and 8.2.3.3.5.2 for IAB type 1-O and IAB type 2-O respectively, and that the SNR at the IAB-MT receiver is not impacted by the noise floor.
The power level for the transmission may be set such that the AWGN level at the RIB is equal to the AWGN level in table 8.2.3.3.4.2-2.
Table 8.2.3.3.4.2-2: AWGN power level at the IAB-MT input
|
BS type |
Sub-carrier spacing (kHz) |
Channel bandwidth (MHz) |
AWGN power level |
|
IAB-MT type 1-O |
30 |
40 |
-77.2 – ΔOTAREFSENS dBm / 38.16 MHz |
|
IAB-MT type 2-O |
120 |
100 |
EISREFSENS_50M + ΔFR2_REFSENS + 18 dBm / 95.04 MHz |
|
NOTE 1: ΔOTAREFSENS as declared in D.53 in table 4.6-1 and clause 7.1. NOTE 2: ΔFR2_REFSENS = -3 dB as described in clause 7.1, since the OTA REFSENS reference direction (as declared in D.54 in table 4.6-1) is used for testing. NOTE 3: EISREFSENS_50M as declared in D.28 in table 4.6-1. |
|||
8) For reference channels applicable to the IAB-MT, measure the ratio of the throughput obtained when following the PMI feedback to the throughput obtained when applying random PMI as described in subclause 8.2.3.3.1.
8.2.3.3.5 Test requirement
8.2.3.3.5.1 Test requirement for IAB type 1-O
as defined in subclause 8.2.3.3.1 shall be greater than the indicated requirement.
Table 8.2.3.3.5.1-1: PMI reporting requirements for FR1
|
Parameter |
Test |
Requirement |
|
|
4TX, 2RX |
1.3 |
|
|
8TX, 2RX |
1.5 |
8.2.3.3.5.2 Test requirement for IAB type 2-O
as defined in subclause 8.2.3.3.1 shall be greater than the indicated requirement.
Table 8.2.3.3.5.1-2: PMI reporting requirements for FR2
|
Parameter |
Requirement |
|
|
1.05 |
8.2.3.4 Reporting of Rank Information (RI)
8.2.3.4.1 Definition and applicability
The purpose of this test is to verify that the reported rank indicator accurately represents the channel rank. The accuracy of RI reporting is determined by the relative increase of the throughput obtained when transmitting based on the reported rank compared to the case for which a fixed rank is used for transmission.
8.2.3.4.2 Minimum requirement
The minimum requirement for IAB-MT type 1-O is in TS 38.174 [2] clause 11.2.3.1.3.
The minimum requirement for IAB-MT type 2-O is in TS 38.174 [2] clause 11.2.3.2.4.
8.2.3.4.3 Test purpose
The test shall verify the receiver’s ability to report correct RI under the defined fading conditions.
8.2.3.4.4 Method of test
8.2.3.4.4.1 Initial conditions
Test environment: Normal, see annex B.2.
RF channels to be tested for single carrier: M; see clause 4.9.1.
RF channels to be tested for carrier aggregation: MBW Channel CA; see clause 4.9.1.
Direction to be tested: OTA REFSENS receiver target reference direction (see D.54 in table 4.6-1).
8.2.3.4.4.2 Procedure
1) Place the IAB-MT with its manufacturer declared coordinate system reference point in the same place as calibrated point in the test system, as shown in annex E.3.
2) Align the manufacturer declared coordinate system orientation of the IAB-MT with the test system.
3) Set the IAB-MT in the declared direction to be tested.
4) Connect the IAB-MT tester generating the wanted signal and AWGN generators to a test antenna via a combining network in OTA test setup, as shown in annex E.3. Each of the demodulation branch signals should be transmitted on one polarization of the test antenna(s).
5) The characteristics of the wanted signal shall be configured according to the corresponding DL reference measurement channel defined in annex A, and according to additional test parameters listed in table 8.2.3.4.4.2-1.
Table 8.2.3.4.4.2-1: Test parameters for testing RI reporting requirements
|
Parameter |
Unit |
FR1 |
FR2 |
||
|
Bandwidth |
MHz |
40 |
100 |
||
|
Subcarrier spacing |
kHz |
30 |
120 |
||
|
Duplex Mode |
TDD |
TDD |
|||
|
TDD Slot Configuration |
7D1S2U, S=6D:4G:4U |
3D1S1U, S=10D:2G:2U |
|||
|
SNR |
dB |
Test 1: 0 Test 2: 20 Test 3: 20 |
Test 1: 0 Test 2: 16 Test 3: 16 |
||
|
Propagation channel |
TDLA30-5 |
TDLA30-35 |
|||
|
Antenna configuration |
Test 1, 2: ULA Low 2×2 Test 3: ULA High 2×2 |
Test 1, 2: ULA Low 2×2 Test 3: XP High 2×2 |
|||
|
Beamforming Model |
As defined in Annex J.3.1 |
As defined in Annex J.3.1 |
|||
|
NZP CSI-RS for CSI acquisition |
CSI-RS resource Type |
Periodic |
Periodic |
||
|
Number of CSI-RS ports (X) |
2 |
2 |
|||
|
CDM Type |
FD-CDM2 |
FD-CDM2 |
|||
|
Density (ρ) |
1 |
1 |
|||
|
First subcarrier index in the PRB used for CSI-RS (k0, k1 ) |
Row 3 (6,-) |
Row 3 (6,-) |
|||
|
First OFDM symbol in the PRB used for CSI-RS (l0, l1) |
(13,-) |
(13,-) |
|||
|
NZP CSI-RS-timeConfig periodicity and offset |
slot |
10/1 |
10/1 |
||
|
CSI-IM configuration |
CSI-IM resource Type |
Periodic |
Periodic |
||
|
CSI-IM RE pattern |
Pattern 0 |
Pattern 1 |
|||
|
CSI-IM Resource Mapping (kCSI-IM,lCSI-IM) |
(4,9) |
(8,13) |
|||
|
CSI-IM timeConfig periodicity and offset |
slot |
10/1 |
8/1 |
||
|
ReportConfigType |
Periodic |
Periodic |
|||
|
CQI-table |
Table 2 |
Table 1 |
|||
|
reportQuantity |
cri-RI-PMI-CQI |
cri-RI-PMI-CQI |
|||
|
cqi-FormatIndicator |
Wideband |
Wideband |
|||
|
pmi-FormatIndicator |
Wideband |
Wideband |
|||
|
Sub-band Size |
RB |
16 |
8 |
||
|
csi-ReportingBand |
1111111 |
1111111 |
|||
|
CSI-Report periodicity and offset |
slot |
10/9 |
8/3 |
||
|
Codebook configuration |
Codebook Type |
typeI-SinglePanel |
typeI-SinglePanel |
||
|
Codebook Mode |
1 |
1 |
|||
|
(CodebookConfig-N1,CodebookConfig-N2) |
N/A |
N/A |
|||
|
CodebookSubsetRestriction |
000011 for fixed rank 1, 010000 for fixed rank 2, 010011 for following rank |
000011 for fixed rank 1, 010000 for fixed rank 2, 010011 for following rank |
|||
|
RI Restriction |
N/A |
N/A |
|||
|
CQI/RI/PMI delay |
ms |
9.5 |
1.375 |
||
|
Maximum number of HARQ transmission |
1 |
1 |
|||
|
RI Configuration |
Test 1: Fixed RI = 2 and follow RI Tests 2, 3: Fixed RI = 1 and follow RI |
Test 1: Fixed RI = 2 and follow RI Tests 2, 3: Fixed RI = 1 and follow RI |
|||
|
Note 1: The same requirements are applicable to with different UL-DL patterns. Note 2: SSB, TRS, CSI-RS and/or other unspecified test parameters with respect to TS 38.101-4 [18] are left up to test implementation, if transmitted or needed. |
|||||
7) Adjust the test signal mean power so the calibrated radiated SNR value at the IAB-MT receiver is as specified in table 8.2.3.4.4.2-1 for IAB type 1-O and IAB type 2-O respectively, and that the SNR at the IAB-MT receiver is not impacted by the noise floor.
The power level for the transmission may be set such that the AWGN level at the RIB is equal to the AWGN level in table 8.2.3.4.4.2-2.
Table 8.2.3.4.4.2-2: AWGN power level at the IAB-MT input
|
BS type |
Sub-carrier spacing (kHz) |
Channel bandwidth (MHz) |
AWGN power level |
|
IAB-MT type 1-O |
30 |
40 |
-77.2 – ΔOTAREFSENS dBm / 38.16 MHz |
|
IAB-MT type 2-O |
120 |
100 |
EISREFSENS_50M + ΔFR2_REFSENS + 18 dBm / 95.04 MHz |
|
NOTE 1: ΔOTAREFSENS as declared in D.53 in table 4.6-1 and clause 7.1. NOTE 2: ΔFR2_REFSENS = -3 dB as described in clause 7.1, since the OTA REFSENS reference direction (as declared in D.54 in table 4.6-1) is used for testing. NOTE 3: EISREFSENS_50M as declared in D.28 in table 4.6-1. |
|||
8) For reference channels applicable to the IAB-MT, measure the ratio of the throughput obtained when following the RI feedback to the throughput obtained when applying random RI as described in subclause 8.2.3.4.5.
8.2.3.4.5 Test requirement
8.2.3.4.5.1 Test requirement for IAB type 1-O
The test requirement for RI reporting is defined as
a) The ratio of the throughput obtained when transmitting based on IAB-MT reported RI and that obtained when transmitting with fixed rank 1 shall be ≥ ;
b) The ratio of the throughput obtained when transmitting based on IAB-MT reported RI and that obtained when transmitting with fixed rank 2 shall be ≥ ;
For the parameters specified in Table 8.2.3.4.4.2-1, the test requirements are specified in Table 8.2.3.4.5.1-1.
Table 8.2.3.4.5.1-1: Test requirements for RI reporting
|
Test 1 |
Test 2 |
Test 3 |
|
|
1 |
N/A |
1.05 |
0.9 |
|
|
1.0 |
N/A |
N/A |
8.2.3.4.5.2 Test requirement for IAB type 2-O
The test requirement for RI reporting is defined as
a) The ratio of the throughput obtained when transmitting based on IAB-MT reported RI and that obtained when transmitting with fixed rank 1 shall be ≥ ;
b) The ratio of the throughput obtained when transmitting based on IAB-MT reported RI and that obtained when transmitting with fixed rank 2 shall be ≥ ;
For the parameters specified in Table 8.2.3.4.4.2-1, the test requirements are specified in Table 8.2.3.4.5.2-1.
Table 8.2.3.4.5.2-1: Test requirements for RI reporting
|
Test 1 |
Test 2 |
Test 3 |
|
|
1 |
N/A |
1.05 |
1.05 |
|
|
1.0 |
N/A |
N/A |
Annex A (normative):
Reference measurement channels