6.6 Beam correspondence
38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
6.6.0 General
Beam correspondence is the ability of the UE to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping. The beam correspondence requirement is satisfied assuming the presence of both SSB and CSI-RS signal and Type D QCL is maintained between SSB and CSI-RS.
Enhanced Beam correspondence is the ability of the UE to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping. The beam correspondence requirement is satisfied assuming the presence of either SSB and CSI-RS signal.
6.6.1 Beam correspondence – EIRP
Editor’s note: The following aspects are either missing or not yet determined:
– Measurement Uncertainties and Test Tolerances are FFS for power class1, 2 and 4.
– The test case is incomplete for band n259.
6.6.1.1 Test purpose
To verify the UE’s ability to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping within the range prescribed by the specified nominal maximum output power and beam correspondence tolerance.
6.6.1.2 Test applicability
This test case applies to all types of NR UE release 15 that do not support beam correspondence without UL beam sweeping.
This test case applies to all types of NR UE release 16 and forward that do not support SSB-based or CSI-RS based enhanced beam correspondence and do not support enhanced beam correspondence without UL beam sweeping.
6.6.1.3 Minimum conformance requirements
6.6.1.3.1 (Void)
6.6.1.3.2 (Void)
6.6.1.3.3 Beam correspondence for PC3
6.6.1.3.3.1 General
The beam correspondence requirement for PC3 UEs consists of three components: UE minimum peak EIRP (as defined in clause 6.2.1.1.3.3), UE spherical coverage (as defined in clause 6.2.1.1.3.3), and beam correspondence tolerance (as defined in clause 6.6.1.3.3.2). The beam correspondence requirement is fulfilled if the UE satisfies one of the following conditions, depending on the UE’s beam correspondence capability IE beamCorrespondenceWithoutUL-BeamSweeping, as defined in TS 38.306 [26]:
– If beamCorrespondenceWithoutUL-BeamSweeping is supported, the UE shall meet the minimum peak EIRP requirement according to Table 6.2.1.1.3.3-1 and spherical coverage requirement according to Table 6.2.1.1.3.3-3 with its autonomously chosen UL beams and without uplink beam sweeping. Such a UE is considered to have met the beam correspondence tolerance requirement.
– If beamCorrespondenceWithoutUL-BeamSweeping is not present, the UE shall meet the minimum peak EIRP requirement according to Table 6.2.1.1.3.3-1 and spherical coverage requirement according to Table 6.2.1.1.3.3-3 with uplink beam sweeping. Such a UE shall meet the beam correspondence tolerance requirement defined in Clause 6.6.1.3.3.2 and shall support uplink beam management, as defined in TS 38.306 [26].
6.6.1.3.3.1.1 Side condition for SSB and CSI-RS
The beam correspondence requirements are only applied under the following conditions:
– The downlink reference signals including both SSB and CSI-RS are provided and Type D QCL shall be maintained between SSB and CSI-RS.
– The reference measurement channel for beam correspondence are fulfilled according to the CSI-RS configuration in Annex A.3.
– The beam correspondence conditions for L1-RSRP measurements are fulfilled according to Table 6.6.1.3.3.1.1-1 and Table 6.6.1.3.3.1.1-2.
Table 6.6.1.3.3.1.1-1: Conditions for SSB based L1-RSRP measurements for beam correspondence
|
Angle of arrival |
NR operating bands |
Minimum SSB_RP Note 2 |
SSB Ês/Iot |
|
dBm / SCSSSB |
dB |
||
|
SCSSSB = 120 kHz |
|||
|
All angles Note 1 |
n257 |
-92.2 |
≥6 |
|
n258 |
-96.2 |
||
|
n259 |
-90.7 |
||
|
n260 |
-91.9 |
||
|
n261 |
-96.2 |
||
|
NOTE 1: For UEs that support multiple FR2 bands, the Minimum SSB_RP values for all angles are increased by MBS,n, the UE multi-band relaxation factor in dB specified in clause 6.2.1. NOTE 2: Values specified at the radiated requirements reference point to give minimum SSB Ês/Iot, with no applied noise. |
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Table 6.6.1.3.3.1.1-2: Conditions for CSI-RS based L1-RSRP measurements for beam correspondence
|
Angle of arrival |
NR operating bands |
Minimum CSI-RS_RP Note 2 |
CSI-RS Ês/Iot |
|
dBm / SCSCSI-RS |
dB |
||
|
SCSCSI-RS = 120 kHz |
|||
|
All angles Note 1 |
n257 |
-96.2 |
≥6 |
|
n258 |
-96.2 |
||
|
n259 |
-90.7 |
||
|
n260 |
-91.9 |
||
|
n261 |
-96.2 |
||
|
NOTE 1: For UEs that support multiple FR2 bands, the Minimum CSI-RS_RP values are increased by MBS,n, the UE multi-band relaxation factor in dB specified in clause 6.2.1. NOTE 2: Values specified at the radiated requirements reference point to give minimum CSI-RS Ês/Iot, with no applied noise. |
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6.6.1.3.3.2 Beam correspondence tolerance for PC3
The beam correspondence tolerance requirement ∆EIRPBC for power class 3 UEs is defined based on a percentile of the distribution of ∆EIRPBC, defined as ∆EIRPBC = EIRP2 – EIRP1 over the link angles spanning a subset of the spherical coverage grid points, such that
– EIRP1 is the total EIRP in dBm calculated based on the beam the UE chooses autonomously (corresponding beam) to transmit in the direction of the incoming DL signal, which is based on beam correspondence without relying on UL beam sweeping.
– EIRP2 is the best total EIRP (beam yielding highest EIRP in a given direction) in dBm which is based on beam correspondence with relying on UL beam sweeping.
– The link angles are the ones corresponding to the top Nth percentile of the EIRP2 measurement over the whole sphere, where the value of N is according to the test point of EIRP spherical coverage requirement for power class 3, i.e. N = 50.
For power class 3 UEs, the requirement is fulfilled if the UE’s corresponding UL beams satisfy the maximum limit in Table 6.6.1.3.3.2-1.
Table 6.6.1.3.3.2-1: UE beam correspondence tolerance for power class 3
|
Operating band |
Max ∆EIRPBC at 85 %-tile ∆EIRPBC CDF (dB) |
|
n257 |
3.0 |
|
n258 |
3.0 |
|
n260 |
3.2 |
|
n261 |
3.0 |
|
NOTE: The requirements in this table are verified only under normal temperature conditions as defined in TS 38.508-1 [10] subclause 4.1.1 |
|
6.6.1.3.4 Normative reference
The normative reference for this requirement is TS 38.101-2 [3] clause 6.6.4.
6.6.1.4 Test description
6.6.1.4.1 Initial conditions
Initial conditions are a set of test configurations the UE needs to be tested in and the steps for the SS to take with the UE to reach the correct measurement state.
The initial test configurations consist of environmental conditions, test frequencies, and channel bandwidths based on NR operating bands specified in Table 5.3.5-1. All of these configurations shall be tested with applicable test parameters for each channel bandwidth and subcarrier spacing, are shown in Table 6.6.1.4.1-1. The details of the uplink reference measurement channels (RMCs) are specified in Annexes A.2. The downlink reference measurement channels (RMCs) are specified in Annex A.3. Configurations of PDSCH and PDCCH before measurement are specified in Annex C.2.
Table 6.6.1.4.1-1: Test Configuration Table for PC3
|
Default Conditions |
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|
Test Environment as specified in TS 38.508-1 [10] subclause 4.1 |
Normal |
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|
Test Frequencies as specified in TS 38.508-1 [10] subclause 4.3.1 |
Low range, High range |
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|
Test Channel Bandwidths as specified in TS 38.508-1 [10] subclause 4.3.1 |
Lowest, Highest |
|||||
|
Test SCS as specified in Table 5.3.5-1 |
120 kHz |
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|
Test Parameters |
||||||
|
Test ID |
ChBw |
SCS |
Downlink Configuration |
Uplink Configuration |
||
|
Default |
– |
Modulation |
RB allocation (NOTE 1) |
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|
1 |
50 |
DFT-s-OFDM QPSK |
Inner_Full |
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|
2 |
100 |
|||||
|
3 |
200 |
|||||
|
4 |
400 |
|||||
|
NOTE 1: The specific configuration of each RF allocation is defined in Table 6.1-1. |
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1. Connection between SS and UE is shown in TS 38.508-1 [10] Annex A, Figure A.3.3.1.1 for TE diagram and Figure A.3.4.1.1 for UE diagram.
2. The parameter settings for the cell are set up according to TS 38.508-1 [10] subclause 4.4.3.
3. Downlink signals are initially set up according to Annex C, and uplink signals according to Annex G.
4. The UL Reference Measurement channels are set according to Table 6.6.1.4.1-1.
5. Propagation conditions are set according to Annex B.0
6. Ensure the UE is in state RRC_CONNECTED with generic procedure parameters Connectivity NR, Connected without release On, Test Mode On and Test Loop Function On according to TS 38.508-1 [10] clause 4.5. Message contents are defined in clause 6.6.1.4.3.
6.6.1.4.2 Test procedure
Test procedure without uplink beam sweeping:
1.1 SS sends uplink scheduling information for each UL HARQ process via PDCCH DCI format 0_1 for C_RNTI to schedule the UL RMC according to Table 6.6.1.4.1-1. Since the UL has no payload and no loopback data to send the UE sends uplink MAC padding bits on the UL RMC. Messages to configure the appropriate uplink modulation in section 6.6.1.4.3.
1.2. Set the UE in the Tx beam peak direction found with a 3D EIRP scan as performed in Annex K.1.1 without uplink beam sweeping (i.e., not executing steps 5.1) to step 5.5) in Annex K.1.1). Allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for the UE Tx beam selection to complete.
1.3. Send continuously uplink power control "up" commands in every uplink scheduling information to the UE; allow at least 200 msec to ensure that the UE transmits at its maximum output power. Allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for the UE Tx beam selection to complete.
1.4. Measure UE EIRP1 in the Tx beam peak direction in the channel bandwidth of the radio access mode according to the test configuration. Repeat EIRP1 measurement for all directions in the sphere according to EIRP measurement procedure defined in Annex K.1.9 without beam sweeping for all the points in the grid. After a rotation, allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for UE to find the best beam to use. The measuring duration is one active uplink subframe. EIRP1 is calculated considering both polarizations, theta and phi.
1.5 Record all the measured EIRP1values.
NOTE 1: The BEAM_SELECT_WAIT_TIME default value is defined in Annex K.1.1.
Test procedure with uplink beam sweeping:
2.1 SS sends uplink scheduling information for each UL HARQ process via PDCCH DCI format 0_1 for C_RNTI to schedule the UL RMC according to Table 6.6.1.4.1-1. Since the UL has no payload and no loopback data to send the UE sends uplink MAC padding bits on the UL RMC. Messages to configure the appropriate uplink modulation in section 6.6.1.4.3.
2.3. Set the UE in the Tx beam peak direction found with a 3D EIRP scan as performed in Annex K.1.1. Allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for the UE Tx beam selection to complete.
2.2. Send continuously uplink power control "up" commands in every uplink scheduling information to the UE; allow at least 200 msec to ensure that the UE transmits at its maximum output power. Allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for the UE Tx beam selection to complete.
2.4. Measure UE EIRP in the Tx beam peak direction in the channel bandwidth of the radio access mode according to the test configuration. Repeat EIRP measurements for all directions in the sphere according to EIRP measurement procedure defined in Annex K.1.9 with beam sweeping. After a rotation, allow at least BEAM_SELECT_WAIT_TIME (NOTE 1) for UE to find the best beam to use. The measuring duration is one active uplink subframe. EIRP is calculated considering both polarizations, theta and phi.
2.5. Record all the measured EIRP2 values.
NOTE 1: The BEAM_SELECT_WAIT_TIME default value is defined in Annex K.1.1.
2.6. Calculate the ΔEIRPBC = EIRP2 – EIRP1.
2.7. Calculate a cumulative distribution function for the ΔEIRPBC values.
NOTE 2: The ΔEIRPtarget-CDF is then obtained from the Cumulative Distribution Function (CDF) computed using ΔEIRPBC for each of all top Nth percentile of the EIRP2 measurement points in the grid. When using constant step size measurement grids, a theta-dependent correction shall be applied, i.e., the PDF probability contribution for each measurement point is scaled by sin(θ) or the normalized Clenshaw-Curtis weights W()/W(90o), introduced in Section M.4.2.1.
6.6.1.4.3 Message contents
Message contents are according to TS 38.508-1 [10] subclause 4.6 with TRANSFORM_PRECODER_ENABLED condition in Table 4.6.3-118 PUSCH-Config and with following exceptions:
Table 6.6.1.4.3-1: SRS-Config: SpatialRelationInfo test requirement for with beam sweeping
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-182 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
spatialRelationInfo |
Not present |
The UE can consider the UL beam sweeping. |
|
Table 6.6.1.4.3-2: SRS-Config: SpatialRelationInfo test requirement for without beam sweeping
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-182 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
spatialRelationInfo |
SRS-SpatialRelationInfo |
The UE consider autonomous beam selection |
|
Table 6.6.1.4.3-3: SRS-Config: ssb-Index test requirement for without beam sweeping
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-182 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
ssb-Index |
SSB-Index |
||
Table 6.6.1.4.3-4: SRS-Config: SRS resources test requirement for with beam sweeping
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-182 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
srs-ResourceSetToReleaseList |
Not present |
||
|
srs-ResourceSetToAddModList SEQUENCE (SIZE(1..maxNrofSRS-ResourceSets)) OF SEQUENCE { |
2 entries |
1 set with 8 SRS resources using ‘beamManagement’ plus 1 set with 1 semi-persistent SRS resource using ‘codebook’ |
|
|
SRS-ResourceSet[1] SEQUENCE{ |
For the ‘beamManagement’ resource set |
||
|
usage |
beamManagement |
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|
resourceType CHOICE { |
aperiodic |
||
|
} |
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|
SRS-ResourceSet[2] SEQUENCE{ |
For the semi-persistent SRS resource set |
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|
usage |
codebook |
||
|
resourceType CHOICE { |
semi-persistent |
||
|
} |
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|
srs-ResourceToReleaseList |
Not present |
||
|
srs_ResourceToAddModList |
9 |
The default beam correspondence SRS resource upper limit (M) = 8 in Rel-15 for the ‘beamManagement’ SRS Resource set plus 1 resource for the semi-persistent SRS ‘codebook’ resource set. |
|
Table 6.6.1.4.3-5: CSI-RS-ResourceMapping: CSI-RS test requirements
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-45 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
CSI-RS-ResourceMapping ::= SEQUENCE { |
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|
frequencyDomainAllocation CHOICE { |
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|
row1 |
0001 |
k0 = 0, row1, 1Tx test cases |
|
|
} |
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|
nrofPorts |
p1 |
1Tx test cases |
|
|
firstOFDMSymbolInTimeDomain |
6 for resource #0 |
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|
7 for resource #1 |
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8 for resource #2 |
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9 for resource #3 |
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10 for resource #4 |
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11 for resource #5 |
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12 for resource #6 |
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13 for resource #7 |
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cdm-Type |
noCDM |
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|
density CHOICE { |
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|
three |
NULL |
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|
} |
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|
freqBand |
CSI-FrequencyOccupation |
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|
} |
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Table 6.6.1.4.3-6: NZP-CSI-RS-Resource: CSI-RS test requirements
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-85 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
NZP-CSI-RS-Resource ::= SEQUENCE { |
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|
nzp-CSI-RS-ResourceId |
NZP-CSI-RS-ResourceId |
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|
resourceMapping |
CSI-RS-ResourceMapping |
||
|
powerControlOffset |
0 |
||
|
powerControlOffsetSS |
db0 |
||
|
scramblingID |
ScramblingId |
||
|
periodicityAndOffset |
CSI-ResourcePeriodicityAndOffset |
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|
qcl-InfoPeriodicCSI-RS |
TCI-StateId |
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|
} |
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Table 6.6.1.4.3-7: NZP-CSI-RS-ResourceSet: CSI-RS test requirements
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Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-87 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
NZP-CSI-RS-ResourceSet ::= SEQUENCE { |
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|
nzp-CSI-ResourceSetId |
NZP-CSI-RS-ResourceSetId |
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|
nzp-CSI-RS-Resources SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourcesPerSet)) OF { |
[1 entry] |
||
|
NZP-CSI-RS-ResourceId[1] |
NZP-CSI-RS-ResourceId |
||
|
} |
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|
repetition |
on |
||
|
aperiodicTriggeringOffset |
0 |
Depending on UE capability |
|
|
trs-Info |
Not present |
||
|
} |
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Table 6.6.1.4.3-8: NZP-CSI-RS-ResourceId: CSI-RS test requirements
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Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-86 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
NZP-CSI-RS-ResourceId |
30 for resource #0 |
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31 for resource #1 |
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32 for resource #2 |
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33 for resource #3 |
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34 for resource #4 |
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35 for resource #5 |
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36 for resource #6 |
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37 for resource #7 |
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Table 6.6.1.4.3-9: CSI-ResourceConfig: CSI-RS test requirements
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Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-39 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
CSI-ResourceConfig ::= SEQUENCE { |
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|
csi-ResourceConfigId |
CSI-ResourceConfigId |
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|
csi-RS-ResourceSetList CHOICE { |
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nzp-CSI-RS-SSB SEQUENCE { |
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|
nzp-CSI-RS-ResourceSetList SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSetsPerConfig)) OF { |
2 entries |
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|
NZP-CSI-RS-ResourceSetId[0] |
0 |
||
|
NZP-CSI-RS-ResourceSetId[1] |
1 |
||
|
} |
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|
csi-SSB-ResourceSetList |
Not present |
||
|
} |
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|
} |
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|
bwp-Id |
BWP-Id |
||
|
resourceType |
aperiodic |
||
|
} |
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Table 6.6.1.4.3-10: CSI-FrequencyOccupation: CSI-RS test requirements
|
Derivation Path: TS 38.508-1 [10], clause 4.6.3, Table 4.6.3-33 |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
CSI-FrequencyOccupation ::= SEQUENCE { |
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|
startingRB |
0 |
||
|
nrofRBs |
48 |
FR2_≥100MHz |
|
|
32 |
FR2_50MHz |
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|
} |
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6.6.1.5 Test requirements
The defined %-tile EIRP in measurement distribution derived in step 2.6 shall exceed the values specified in Table 6.2.1.2.5-3 in clause 6.2.1.2.5. The defined %-tile ΔEIRPBC in measurement distribution derived in step 2.7 shall not exceed the values specified in Table 6.6.1.5-1 and Table 6.6.1.5-2.
Table 6.6.1.5-1: UE beam correspondence tolerance for power class 3
|
Operating band |
Max ∆EIRPBC at 85th %-tile ∆EIRPBC CDF (dB) |
|
n257 |
3.0 +TT |
|
n258 |
3.0 +TT |
|
n260 |
3.2 +TT |
|
n261 |
3.0 +TT |
|
NOTE: The requirements in this table are verified only under normal temperature conditions as defined in TS 38.508-1 [10] subclause 4.1.1 |
|
Table 6.6.1.5-2: Test Tolerance (TT) for UE beam correspondence tolerance for power class 3
|
Operating band |
Test Tolerance (dB) |
|
n257, n258, n260, n261 |
1.26 |
|
n259 |
FFS |
6.6.2 Enhanced Beam correspondence – EIRP
6.6.2.1 Test purpose
To verify the UE’s ability to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping within the range prescribed by the specified nominal maximum output power and beam correspondence tolerance.
6.6.2.2 Test applicability
This test case applies to all types of NR UE release 16 and forward that support either CSI-RS or SSB based beam correspondence and do not support beam correspondence without UL beam sweeping.
6.6.2.3 Minimum conformance requirements
6.6.2.3.1 Enhanced Beam correspondence for PC3
6.6.2.3.1.1 General Test Coverage Rules
The beam correspondence requirement for PC3 UEs consists of three components: UE minimum peak EIRP (as defined in clause 6.2.1.1.3.3), UE spherical coverage (as defined in clause 6.2.1.1.3.3), and beam correspondence tolerance (as defined in clause 6.6.1.3.3.2). The beam correspondence requirement is fulfilled if the UE satisfies one of the following conditions, depending on the UE’s beam correspondence capability IE beamCorrespondenceWithoutUL-BeamSweeping, as defined in TS 38.306 [26]:
If beamCorrespondenceWithoutUL-BeamSweeping and beamCorrespondenceSSB-based-r16 are supported, the UE shall meet the minimum peak EIRP requirement according to Table 6.2.1.1.3.3-1 and spherical coverage requirement according to Table 6.2.1.1.3.3-3 using the side conditions for SSB based enhanced beam correspondence requirements as defined in Clause 6.6.2.3.2.
– If beamCorrespondenceWithoutUL-BeamSweeping and beamCorrespondenceCSI-RS-based-r16 are supported, the UE shall meet the minimum peak EIRP requirement according to Table 6.2.1.1.3.3-1 and spherical coverage requirement according to Table 6.2.1.1.3.3-3 using the side conditions for CSI-RS based enhanced beam correspondence requirements as defined in Clause 6.6.2.3.3.
If beamCorrespondenceWithoutUL-BeamSweeping is not present and beamCorrespondenceSSB-based-r16 is supported, the UE shall meet the minimum peak EIRP requirement according to Table 6.2.1.1.3.3-1 and spherical coverage requirement according to Table 6.2.1.1.3.3-3 with uplink beam sweeping using the side conditions for SSB based enhanced beam correspondence requirements as defined in Clause 6.6.2.3.2. Such a UE shall meet the beam correspondence tolerance requirement defined in Clause 6.6.1.3.3.2 and shall support uplink beam management, as defined in TS 38.306 [14].
– If beamCorrespondenceWithoutUL-BeamSweeping is not present and beamCorrespondenceCSI-RS-based-r16 is supported, the UE shall meet the minimum peak EIRP requirement according to Table 6.2.1.1.3.3-1 and spherical coverage requirement according to Table 6.2.1.1.3.3-3 with uplink beam sweeping using the side conditions for CSI-RS based enhanced beam correspondence requirements as defined in Clause 6.6.2.3.3. Such a UE shall meet the beam correspondence tolerance requirement defined in Clause 6.6.1.3.3.2 and shall support uplink beam management, as defined in TS 38.306 [14].
6.6.2.3.1.2 Applicability rules based on support for type of enhanced beam correspondence
For UEs supporting more than one type of beam correspondence, the following applicability rules apply:
– If a UE meets enhanced beam correspondence requirements either based on SSB or based on CSI-RS, it is considered to have met the beam correspondence requirements based on SSB and CSI-RS.
– For a UE supporting either SSB based or CSI-RS based enhanced beam correspondence, UE shall meet the supported enhanced beam correspondence requirements.
– For a UE supporting both SSB based and CSI-RS based enhanced beam correspondence, the UE shall meet both SSB based and CSI-RS based enhanced beam correspondence requirements and the following applicability rules for verifying the requirements apply:
– The enhanced beam correspondence requirements shall be verified with the SSB based enhanced beam correspondence side conditions in clause 6.6.2.3.2
– If the UE meets the SSB based enhanced beam correspondence requirements using the side conditions in clause 6.6.2.3.2 and meets the minimum peak EIRP requirement as defined in clause 6.2.1.1 using the CSI-RS based side conditions in clause 6.6.2.3.3, where the link direction is determined in the SSB based enhanced beam correspondence test, the UE is considered to have met both the SSB based and CSI-RS based enhanced beam correspondence requirements.
– Otherwise, if UE does not meet the minimum peak EIRP requirement as defined in clause 6.2.1.3 using the CSI-RS based side conditions in clause 6.6.4.3.3, the enhanced beam correspondence requirements shall be further verified for the UE with the CSI-RS based enhanced beam correspondence side conditions in clause 6.6.2.3.3.
6.6.2.3.2 Side Condition for SSB based enhanced Beam Correspondence requirements
The beam correspondence requirements for beam correspondence based on SSB are only applied under the following side conditions:
– The downlink reference signal SSB is provided and CSI-RS is not provided.
– For beam correspondence, conditions for L1-RSRP measurements are fulfilled according to Table 6.6.1.3.3.1.1-1.
6.6.2.3.3 Side Condition for CSI-RS based enhanced Beam Correspondence requirements
The beam correspondence requirements for beam correspondence based on CSI-RS are only applied under the following side conditions:
– The downlink reference signals including both SSB and CSI-RS are provided.
– The reference measurement channel for beam correspondence are fulfilled according to the CSI-RS configuration in Annex A.3.
– For beam correspondence, conditions for L1-RSRP measurements are fulfilled according to Table 6.6.1.3.3.1.1-2 and SSB signal is provided according to Table 6.6.2.3.3-1.
Table 6.6.2.3.3-1: SSB signal conditions for CSI-RS based beam correspondence requirements
|
Angle of arrival |
NR operating bands |
Minimum SSB_RP Note 2 |
SSB Ês/Iot |
|
dBm / SCSSSB |
dB |
||
|
SCSSSB = 120 kHz |
|||
|
All angles Note 1 |
n257 |
-101,4 |
≥1 |
|
n258 |
-101,4 |
||
|
n259 |
-97,1 |
||
|
n260 |
-97,1 |
||
|
n261 |
-101,4 |
||
|
NOTE 1: For UEs that support multiple FR2 bands, the Minimum SSB_RP values for all angles are increased by ΣMBS, the UE multi-band relaxation factor in dB specified in clause 6.2.1. NOTE 2: Values specified at the radiated requirements reference point to give minimum SSB Ês/Iot, with no applied noise. |
|||
6.6.2.3.4 Normative reference
The normative reference for this requirement is TS 38.101-2 [3] clause 6.6.4
6.6.2.4 Test description
6.6.2.4.1 Initial conditions
Same as 6.6.1.4.1.
6.6.2.4.2 Test procedure
The following cases are tested depending on UE capability:
- Test procedure if beamCorrespondenceWithoutUL-BeamSweeping is NOT supported, uplink beam management and beamCorrespondenceSSB-based-r16 are supported:
1.1 Same as 6.6.1.4.2 with the exception that measurements shall be carried out using only side conditions defined in Table 6.6.1.3.3.1.1-1.
1.2 End test procedure.
2. Test procedure if beamCorrespondenceWithoutUL-BeamSweeping is NOT supported, uplink beam management and beamCorrespondenceCSI-RS-based-r16 is supported
2.1 Same as 6.6.1.4.2 with the exception that measurements shall be carried out using only side conditions defined in Table 6.6.2.3.3-1.
2.2 End test procedure.
3. Test procedure if beamCorrespondenceWithoutUL-BeamSweeping is NOT supported, uplink beam management, beamCorrespondenceCSI-RS-based-r16 and beamCorrespondenceSSB-based-r16 are supported
3.1 Same as 6.6.1.4.2 with the exception that measurements shall be carried out using only side conditions defined in Table 6.6.1.3.3.1.1-1.
3.2 If measurement performed in 6.2.1.1_1.4.2 Step 3.2 was fail, repeat test same as 6.6.1.4.2 with the exception that measurements shall be carried out using only side conditions defined in Table 6.6.2.3.3-1.
3.3 End test procedure.
6.6.2.4.3 Message contents
Same as the message contents in 6.6.1.4.3
6.6.2.5 Test requirements
The defined %-tile EIRP in measurement distribution derived within 6.6.2.4.2 (as per step 2.6 of clause 6.6.1.4.2) shall exceed the values specified in Table 6.2.1.2.5-3 in clause 6.2.1.2.5. The defined %-tile ΔEIRPBC in measurement distribution derived in step 2.7 shall not exceed the values specified in Table 6.6.1.5-1.
Table 6.6.1.5-1: UE beam correspondence tolerance for power class 3
|
Operating band |
Max ∆EIRPBC at 85th %-tile ∆EIRPBC CDF (dB) |
|
n257 |
3.0 +TT |
|
n258 |
3.0 +TT |
|
n260 |
3.2 +TT |
|
n261 |
3.0 +TT |
|
NOTE: The requirements in this table are verified only under normal temperature conditions as defined in TS 38.508-1 [10] subclause 4.1.1. |
|