A.7.5.5 Beam Failure Detection and Link recovery procedures

38.1333GPPNRRelease 16Requirements for support of radio resource managementTS

A.7.5.5.1 Beam Failure Detection and Link Recovery Test for FR2 PCell configured with SSB-based BFD and LR in non-DRX mode

A.7.5.5.1.1 Test Purpose and Environment

The purpose of this test is to verify that the UE properly detects SSB-based beam failure in the set q0 configured for a serving cell and that the UE performs correct SSB-based link recovery based on beam candidate set q1. The purpose is to test the downlink monitoring for beam failure detection within the UEs active DL BWP, during the evaluation period, and link recovery, when no DRX is used. This test will partly verify the SSB based beam failure detection and link recovery for an FR2 serving cell requirements in clause 8.5.

The test parameters are given in Tables A.7.5.5.1.1-1, A.7.5.5.1.1-2, A.7.5.5.1.1-3 and A.7.5.5.1.1-4 below. There is one cell, cell 1 which is the active cell, in the test. The test consists of five successive time periods, with time duration of T1, T2, T3, T4 and T5 respectively. Figure A.7.5.5.1.1-1 shows the variation of the downlink SNR of the SSB in set q0 in the active cell to emulate SSB based beam failure. Figure A.7.5.5.1.1-1 additionally shows the variation of the downlink L1-RSRP of the SSB in set q1 of the candidate beam used for link recovery. Prior to the start of the time duration T1, the UE shall be fully synchronized to cell 1. The UE shall be configured for periodic CSI reporting with a reporting periodicity of 2 ms. In the test, DRX configuration is not enabled. The UE is configured to perform inter-frequency measurements using GP ID #0 (40ms) in test 1.

Table A.7.5.5.1.1-1: Supported test configurations for FR2 PCell

Configuration

Description

1

TDD duplex mode, 120 kHz SSB SCS, 100 MHz bandwidth

2

TDD duplex mode, 240 kHz SSB SCS, 100 MHz bandwidth

Note: The UE is only required to pass in one of the supported test configurations in FR2

Table A.7.5.5.1.1-2: General test parameters for FR2 PCell for SSB-based beam failure detection and link recovery testing in non-DRX mode

Parameter

Unit

Value

Comment

Test 1

Active PCell

Cell 1

RF Channel Number

1

Duplex mode

Config 1, 2

TDD

BWchannel

Config 1, 2

100: NRB,c = 66

DL initial BWP configuration

Config 1, 2

DLBWP.0.1

DL dedicated BWP configuration

Config 1, 2

DLBWP.1.1

UL initial BWP configuration

Config 1, 2

ULBWP.0.1

UL dedicated BWP configuration

Config 1, 2

ULBWP.1.1

TDD Configuration

Config 1, 2

TDDConf.3.1

CORESET Reference Channel

Config 1, 2

CR. 3.1 TDD

SSB Configuration

Config 1

SSB.1 FR2

Config 2

SSB.2 FR2

SMTC Configuration

Config 1, 2

SMTC.3

PDSCH/PDCCH subcarrier spacing

Config 1, 2

120 KHz

PRACH Configuration

Config 1, 2

Table A.3.8.3.4

SSB index assigned as BFD RS (q0)

0

SSB index assigned as CBD RS (q1)

1

TCI Configuration

Config 1, 2

TBD

OCNG parameters

OP.1

CP length

Normal

Beam failure detection transmission parameters

DCI format

1-0

Number of Control OFDM symbols

2

Aggregation level

CCE

8

Ratio of hypothetical PDCCH RE energy to average CSI-RS RE energy

dB

0

Ratio of hypothetical PDCCH DMRS energy to average CSI-RS RE energy

dB

0

DMRS precoder granularity

REG bundle size

REG bundle size

6

DRX

OFF

Gap pattern ID

gp0

gapOffset

0

rlmInSyncOutOfSyncThreshold

absent

When the field is absent, the UE applies the value 0. (Table 8.1.1-1).

rsrp-

Config 1

dBm/SSB

-94.5

Threshold used

ThresholdSSB

Config 2

SCS

-91.5

for Qin_LR_SSB

powerControlOffsetSS

Used for deriving rsrp-ThresholdCSI-RS

beamFailureInstanceMaxCount

n1

see clause 5.17 of TS 38.321 [7]

beamFailureDetectionTimer

pbfd4

see clause 5.17 of TS 38.321 [7]

CSI-RS configuration for CSI reporting

Config 1, 2

CSI-RS.3.1 TDD

TCI states

TCI.State.0

CSI-RS for tracking

Config 1, 2

TRS.2.1 TDD

SSB index assigned as RLM RS

0, 1

T310 Timer

ms

1000

N310

2

T1

s

1

During this time the the UE shall be fully synchronized to cell 1

T2

s

2.61

T3

s

1.64

T4

S

0

T5

s

1.01

D1

s

0.97

Note 1: All configurations are assigned to the UE prior to the start of time period T1.

Note 2: UE-specific PDCCH is not transmitted after T1 starts.

Editor’s note: An additional RS for RLM, different from BFD-RS at constant high SNR shall be configured as part of the test configuration.

Table A.7.5.5.1.1-3: Cell specific test parameters for FR2 PCell for SSB-based beam failure detection and link recovery testing in non-DRX mode

Parameter

Unit

Test 1

T1

T2

T3

T4

T5

AoA setup

Setup 1 defined in A.3.15

Assumption for UE beams Note 10

Rough

EPRE ratio of PDCCH DMRS to SSS

dB

0

EPRE ratio of PDCCH to PDCCH DMRS

dB

EPRE ratio of PBCH DMRS to SSS

dB

EPRE ratio of PBCH to PBCH DMRS

dB

EPRE ratio of PSS to SSS

dB

EPRE ratio of PDSCH DMRS to SSS

dB

EPRE ratio of PDSCH to PDSCH DMRS

dB

EPRE ratio of OCNG DMRS to SSS

dB

EPRE ratio of OCNG to OCNG DMRS

dB

SNR_SSB of set q0

Config 1

dB

5

-3

-12

-12

-12

Config 2

5

-3

-12

-12

-12

SNR_SSB of set q1

Config 1

dB

0.2

0.2

20.2

20.2

20.2

Config 2

0.2

0.2

20.2

20.2

20.2

SSB_RP of set q1

Config 1

dBm/SSB

-104.5

-104.5

-84.5

-84.5

-84.5

Config 2

SCS

-101.5

-101.5

-81.5

-81.5

-81.5

Config 1

dBm/120 KHz

-104.7

Config 2

-104.7

Propagation condition

TDL-A 30ns 75Hz

Note 1: OCNG shall be used such that the resources in Cell 1 are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

Note 2: The uplink resources for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 3: NZP CSI-RS resource set configuration for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 4: Measurement gap configuration is assigned to the UE prior to the start of time period T1.

Note 5: The timers and layer 3 filtering related parameters are configured prior to the start of time period T1.

Note 6: The signal contains PDCCH for UEs other than the device under test as part of OCNG.

Note 7: SNR levels correspond to the signal to noise ratio over the SSS REs.

Note 8: The SNR in time periods T1, T2, T3, T4 and T5 is denoted as SNR1, SNR2 and SNR3 respectively in figure A.7.5.5.1.1-1.

Note 9: The SNR values are specified for testing a UE which supports 2RX on at least one band. For testing of a UE hich supports 4RX on all bands, the SNR during T3 is modified as specified in clause A.3.6.

Note 10: Information about types of UE beam is given in B.2.1.3 and does not limit UE implementation or test system implementation.

Table A.7.5.5.1.1-4: Void

C:\Users\w00527694\Pictures\图片28.png

Figure A.7.5.5.1.1-1: SNR and L1-RSRP variation SSB for SSB-based beam failure detection and link recovery testing in non-DRX mode

A.7.5.5.1.2 Test Requirements

The UE behaviour during time durations T1, T2, T3, T4 and T5 shall be as follows:

During the time duration T1 and T2, the UE shall transmit uplink signal at least in all subframes configured for CSI transmission on Cell 1.

During the period from time point A to time point B the UE shall transmit uplink signal in Cell 1 in all uplink slots configured for CSI transmission according to the configured periodic CSI reporting for Cell 1.

During T3 the UE shall detect beam failure and initiate link recovery. During T4 and T5 the UE measures and evaluate beam candidate from beam candidate set q1.

No later than time point F occurring no later than D1 = 960+10 ms after the start of T5, the UE shall transmit preamble on a beam associated with the candidate beam set q1. The UE shall not transmit preamble on a beam associated with the candidate beam set q1 earlier than time point B.

Test is concluded once the test equipment has received the initial preamble transmission from the UE. The rate of correct events observed during repeated tests shall be at least 90%.

A.7.5.5.2 Beam Failure Detection and Link Recovery Test for FR2 PCell configured with SSB-based BFD and LR in DRX mode

A.7.5.5.2.1 Test Purpose and Environment

The purpose of this test is to verify that the UE properly detects SSB-based beam failure in the set q0 configured for a serving cell and that the UE performs correct SSB-based link recovery based on beam candidate set q1. The purpose is to test the downlink monitoring for beam failure detection within the UEs active DL BWP, during the evaluation period, and link recovery, when DRX is used. This test will partly verify the SSB based beam failure detection and link recovery for an FR2 serving cell requirements in clause 8.5.

The test parameters are given in Tables A.7.5.5.2.1-1, A.7.5.5.2.1-2, A.7.5.5.2.1-3, A.7.5.5.2.1-4 and A.7.5.5.2.1-5 below. There is one cell, cell 1 which is the active cell, in the test. The test consists of five successive time periods, with time duration of T1, T2, T3, T4 and T5 respectively. Figure A.7.5.5.2.1-1 shows the variation of the downlink SNR of the SSB in set q0 in the active cell to emulate SSB based beam failure. Figure A.7.5.5.2.1-1 additionally shows the variation of the downlink L1-RSRP of the SSB in set q1 of the candidate beam used for link recovery. Prior to the start of the time duration T1, the UE shall be fully synchronized to cell 1. The UE shall be configured for periodic CSI reporting with a reporting periodicity of 2 ms. In the test, DRX configuration is enabled in PCell and DRX inactivity timer has already been expired, i.e. UE tries to decode PDCCH and to send periodic CQI during the period when On-duration timer is running. Time alignment timers shall be set to “infinity” so that UL timing alignment is maintained during the test.

Table A.7.5.5.2.1-1: Supported test configurations for FR2 PCell

Configuration

Description

1

TDD duplex mode, 120 kHz SSB SCS, 100 MHz bandwidth

2

TDD duplex mode, 240 kHz SSB SCS, 100 MHz bandwidth

Note: The UE is only required to pass in one of the supported test configurations in FR2

Table A.7.5.5.2.1-2: General test parameters for FR2 PCell for SSB-based beam failure detection and link recovery testing in DRX mode

Parameter

Unit

Value

Comment

Test 1

Active PCell

Cell 1

RF Channel Number

1

Duplex mode

Config 1, 2

TDD

BWchannel

Config 1, 2

100: NRB,c = 66

DL initial BWP configuration

Config 1, 2

DLBWP.0.1

DL dedicated BWP configuration

Config 1, 2

DLBWP.1.1

UL initial BWP configuration

Config 1, 2

ULBWP.0.1

UL dedicated BWP configuration

Config 1, 2

ULBWP.1.1

TDD Configuration

Config 1, 2

TDDConf.3.1

CORESET Reference Channel

Config 1, 2

CR. 3.1 TDD

SSB Configuration

Config 1

SSB.1 FR2

Config 2

SSB.2 FR2

SMTC Configuration

Config 1, 2

SMTC.3

PDSCH/PDCCH subcarrier spacing

Config 1, 2

120 KHz

PRACH Configuration

Config 1, 2

Table A.3.8.3.4

SSB index assigned as BFD RS (q0)

0

SSB index assigned as CBD RS (q1)

1

TCI Configuration

Config 1, 2

TBD

OCNG parameters

OP.1

CP length

Normal

Beam failure detection transmission parameters

DCI format

1-0

Number of Control OFDM symbols

2

Aggregation level

CCE

8

Ratio of hypothetical PDCCH RE energy to average CSI-RS RE energy

dB

0

Ratio of hypothetical PDCCH DMRS energy to average CSI-RS RE energy

dB

0

DMRS precoder granularity

REG bundle size

REG bundle size

6

DRX

DRX.3

A.3.3.3

Gap pattern ID

N.A.

rlmInSyncOutOfSyncThreshold

absent

When the field is absent, the UE applies the value 0. (Table 8.1.1-1).

rsrp-

Config 1

dBm/SSB

-94.5

Threshold used

ThresholdSSB

Config 2

SCS

-91.5

for Qin_LR_SSB

powerControlOffsetSS

db0

Used for deriving rsrp-ThresholdCSI-RS

beamFailureInstanceMaxCount

n1

see clause 5.17 of TS 38.321 [7]

beamFailureDetectionTimer

pbfd4

see clause 5.17 of TS 38.321 [7]

CSI-RS configuration for CSI reporting

Config 1, 2

CSI-RS.3.1 TDD

A.3.14.2

TCI states

TCI.State.0

CSI-RS for tracking

Config 1, 2

TRS.2.1 TDD

SSB index assigned as RLM RS

0, 1

T310 Timer

ms

1000

N310

2

T1

s

1

During this time the the UE shall be fully synchronized to cell 1

T2

s

3.37

T3

s

2.8

T4

s

0

T5

s

0.61

D1

s

0.57

Note 1: All configurations are assigned to the UE prior to the start of time period T1.

Note 2: UE-specific PDCCH is not transmitted after T1 starts.

Table A.7.5.5.2.1-3: Cell specific test parameters for FR2 PCell for SSB-based beam failure detection and link recovery testing in DRX mode

Parameter

Unit

Test 1

T1

T2

T3

T4

T5

AoA setup

Setup 1 defined in A.3.15

Assumption for UE beams Note 10

Rough

EPRE ratio of PDCCH DMRS to SSS

dB

0

EPRE ratio of PDCCH to PDCCH DMRS

dB

EPRE ratio of PBCH DMRS to SSS

dB

EPRE ratio of PBCH to PBCH DMRS

dB

EPRE ratio of PSS to SSS

dB

EPRE ratio of PDSCH DMRS to SSS

dB

EPRE ratio of PDSCH to PDSCH DMRS

dB

EPRE ratio of OCNG DMRS to SSS

dB

EPRE ratio of OCNG to OCNG DMRS

dB

SNR_SSB of set q0

Config 1

dB

5

-3

-12

-12

-12

Config 2

5

-3

-12

-12

-12

SNR_SSB of set q1

Config 1

dB

0.2

0.2

20.2

20.2

20.2

Config 2

0.2

0.2

20.2

20.2

20.2

SSB_RP of set q1

Config 1

dBm/SSB

-104.5

-104.5

-84.5

-84.5

-84.5

Config 2

SCS

-101.5

-101.5

-81.5

-81.5

-81.5

Config 1

dBm/120 KHz

-104.7

Config 2

-104.7

Propagation condition

TDL-A 30ns 75Hz

Note 1: OCNG shall be used such that the resources in Cell 1 are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

Note 2: The uplink resources for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 3: NZP CSI-RS resource set configuration for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 4: Void

Note 5: The timers and layer 3 filtering related parameters are configured prior to the start of time period T1.

Note 6: The signal contains PDCCH for UEs other than the device under test as part of OCNG.

Note 7: SNR levels correspond to the signal to noise ratio over the SSS REs.

Note 8: The SNR in time periods T1, T2, T3, T4 and T5 is denoted as SNR1, SNR2 and SNR3 respectively in figure A.7.5.5.1.1-1.

Note 9: The SNR values are specified for testing a UE which supports 2RX on at least one band. For testing of a UE which supports 4RX on all bands, the SNR during T3 is modified as specified in clause [A.3.6].

Note 10: Information about types of UE beam is given in B.2.1.3 and does not limit UE implementation or test system implementation.

Table A.7.5.5.2.1-4: Void

Table A.7.5.5.2.1-5: Void

C:\Users\w00527694\Pictures\图片28.png

Figure A.7.5.5.2.1-1: SNR and L1-RSRP variation for SSB-based beam failure detection and link recovery testing in non-DRX mode

A.7.5.5.2.2 Test Requirements

The UE behaviour during time durations T1, T2, T3, T4 and T5 shall be as follows:

During the time duration T1 and T2, the UE shall transmit uplink signal at least in all subframes configured for CSI transmission on Cell 1.

During the period from time point A to time point B the UE shall transmit uplink signal in Cell 1 in all uplink slots configured for CSI transmission according to the configured periodic CSI reporting for Cell 1.

During T3 the UE shall detect beam failure and initiate link recovery. During T4 and T5 the UE measures and evaluate beam candidate from beam candidate set q1.

No later than time point F occurring no later than D1 = 560+10 ms after the start of T5, the UE shall transmit preamble on a beam associated with the candidate beam set q1. The UE shall not transmit preamble on a beam associated with the candidate beam set q1 earlier than time point B.

Test is concluded once the test equipment has received the initial preamble transmission from the UE. The rate of correct events observed during repeated tests shall be at least 90%.

A.7.5.5.3 Beam Failure Detection and Link Recovery Test for FR2 PCell configured with CSI-RS-based BFD and LR in non-DRX mode

A.7.5.5.3.1 Test Purpose and Environment

The purpose of this test is to verify that the UE properly detects CSI-RS-based beam failure in the set q0 configured for a serving cell and that the UE performs correct CSI-RS-based link recovery based on beam candicate set q1. The purpose is to test the downlink monitoring for beam failure detection within the UEs active DL BWP, during the evaluation period, and link recovery, when no DRX is used. This test will partly verify the CSI-RS based beam failure detection and link recovery for an FR2 serving cell requirements in clause 8.5.

The test parameters are given in Tables A.7.5.5.3.1-1, A.7.5.5.3.1-2, and A.7.5.5.3.1-3 below. There is one cell, cell 1 which is the active cell, in the test. The test consists of five successive time periods, with time duration of T1, T2, T3, T4 and T5 respectively. Figure A.7.5.5.3.1-1 shows the variation of the downlink SNR of the CSI-RS in set q0 in the active cell to emulate CSI-RS based beam failure. Figure A.7.5.5.3.1-1 additionally shows the variation of the downlink L1-RSRP of the CSI-RS in set q1 of the candidate beam used for link recovery. Prior to the start of the time duration T1, the UE shall be fully synchronized to cell 1. The UE shall be configured for periodic CSI reporting with a reporting periodicity of [2] ms. In the test, DRX configuration is not enabled.

Table A.7.5.5.3.1-1: Supported test configurations for FR2 PCell

Configuration

Description

1

TDD duplex mode, 120 kHz SSB SCS, 100 MHz bandwidth

Table A.7.5.5.3.1-2: General test parameters for FR2 PCell for CSI-RS-based beam failure detection and link recovery testing in non-DRX mode

Parameter

Unit

Value

Comment

Test 1

Active PCell

Cell 1

RF Channel Number

1

Duplex mode

Config 1

TDD

TDD Configuration

Config 1

TDDConf.3.1

CORESET Reference Channel

Config 1

CR.3.1 TDD

A.3.1.2

SSB Configuration

Config 1

SSB.3 FR2

A.3.10

SMTC Configuration

Config 1

SMTC.3

A.3.11

PDSCH/PDCCH subcarrier spacing

Config 1

120KHz

csi-RS-Index assigned as beam failure detection RS in set q0

0

TRS configuration

TRS.2.1 TDD

TCI configuration

CSI-RS.Config.0

OCNG parameters

OP.1

A.3.2.1

CP length

Normal

Beam failure detection transmission parameters

DCI format

1-0

Number of Control OFDM symbols

2

Aggregation level

CCE

8

Ratio of hypothetical PDCCH RE energy to average CSI-RS RE energy

dB

0

Ratio of hypothetical PDCCH DMRS energy to average CSI-RS RE energy

dB

0

DMRS precoder granularity

REG bundle size

REG bundle size

6

DRX

OFF

Gap pattern ID

N.A.

csi-RS-Index assigned as candidate beam detection RS in set q1

1

rlmInSyncOutOfSyncThreshold

absent

When the field is absent, the UE applies the value 0. (Table 8.1.1-1).

rsrp-ThresholdSSB

dBm/SCS kHz

-94.5

Threshold used for Qin_LR_SSB

powerControlOffsetSS

db0

Used for deriving rsrp-ThresholdCSI-RS

beamFailureInstanceMaxCount

n1

see clause 5.17 of TS 38.321 [7]

beamFailureDetectionTimer

pbfd4

see clause 5.17 of TS 38.321 [7]

CSI-RS configuration for q0 and q1

Config 1

CSI-RS.3.2 TDD

A.3.14.2

CSI-RS configuration for CSI reporting

Config 1

CSI-RS.3.1 TDD

A.3.14.2

csi-RS-Index assigned as RLM RS

0, 1

A.3.14.2

T310 Timer

ms

1000

N310

2

T1

s

1

During this time the the UE shall be fully synchronized to cell 1

T2

s

1.17

T3

s

0.9

T4

s

0

T5

s

0.31

D1

s

0.27

Note 1: UE-specific PDCCH is not transmitted after T1 starts.

Table A.7.5.5.3.1-3: Cell specific test parameters for FR2 PCell for CSI-RS-based beam failure detection and link recovery testing in non-DRX mode

Parameter

Unit

Test 1

T1

T2

T3

T4

T5

AoA setup

Setup 1 defined in A.3.15

Assumptpion for UE beams Note 10

Rough

EPRE ratio of PDCCH DMRS to SSS

dB

0

EPRE ratio of PDCCH to PDCCH DMRS

dB

EPRE ratio of PBCH DMRS to SSS

dB

EPRE ratio of PBCH to PBCH DMRS

dB

EPRE ratio of PSS to SSS

dB

EPRE ratio of PDSCH DMRS to SSS

dB

EPRE ratio of PDSCH to PDSCH DMRS

dB

EPRE ratio of OCNG DMRS to SSS

dB

EPRE ratio of OCNG to OCNG DMRS

dB

SNR_CSI-RS of set q0

Config 1

dB

5

-3

-12

-12

-12

SNR_CSI-RS of set q1

Config 1

dB

0.2

0.2

20.2

20.2

20.2

CSI-RS_RP of set q1

Config 1

dBm/SCS kHz

-104.5

-104.5

-84.5

-84.5

-84.5

Config 1

dBm/15 KHz

-104.7

Propagation condition

TDL-A 30ns 75Hz

Note 1: OCNG shall be used such that the resources in Cell 1 are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

Note 2: The uplink resources for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 3: NZP CSI-RS resource set configuration for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 4: Void

Note 5: The timers and layer 3 filtering related parameters are configured prior to the start of time period T1.

Note 6: The signal contains PDCCH for UEs other than the device under test as part of OCNG.

Note 7: SNR levels correspond to the signal to noise ratio over the REs carrying CSI-RS.

Note 8: The SNR in time periods T1, T2, T3, T4 and T5 is denoted as SNR1, SNR2 and SNR3 respectively in figure A.7.5.5.3.1-1.

Note 9: The SNR values are specified for testing a UE which supports 2RX on at least one band. For testing of a UE which supports 4RX on all bands, the SNR during T3 is modified as specified in clause A.3.6.

Note 10: Information about types of UE beam is given in B.2.1.3 and does not limit UE implementation or test system implementation.

Table A.7.5.5.3.1-4: Void

Table A.7.5.5.3.1-5: Void

C:\Users\w00527694\Pictures\图片29.png

Figure A.7.5.5.3.1-1: SNR and L1-RSRP variation for CSI-RS based beam failure detection and link recovery testing in non-DRX mode

A.7.5.5.3.2 Test Requirements

The UE behaviour during time durations T1, T2, T3, T4 and T5 shall be as follows:

During the time duration T1 and T2, the UE shall transmit uplink signal at least in all subframes configured for CSI transmission on Cell 1.

During the period from time point A to time point B the UE shall transmit uplink signal in Cell 1 in all uplink slots configured for CSI transmission according to the configured periodic CSI reporting for Cell 1.

During T3 the shall detect beam failure and initiat link recovery. During T4 and T5 the UE measures and evaluate beam candidate from beam candidate set q1.

No later than time point F occurring no later than D1 = 260+10 ms after the start of T5, the UE shall transmit preamble on a beam associated with the candidate beam set q1. The UE shall not transmit preamble on a beam associated with the candidate beam set q1 earlier than time point B.

Test is concluded once the test equipment has received the initial preamble transmission from the UE. The rate of correct events observed during repeated tests shall be at least 90%.

A.7.5.5.4 Beam Failure Detection and Link Recovery Test for FR2 PCell configured with CSI-RS-based BFD and LR in DRX mode

A.7.5.5.4.1 Test Purpose and Environment

The purpose of this test is to verify that the UE properly detects CSI-RS-based beam failure in the set q0 configured for a serving cell and that the UE performs correct CSI-RS-based link recovery based on beam candicate set q1. The purpose is to test the downlink monitoring for beam failure detection within the UEs active DL BWP, during the evaluation period, and link recovery, when DRX is used. This test will partly verify the CSI-RS based beam failure detection and link recovery for an FR2 serving cell requirements in clause 8.5.

The test parameters are given in Tables A.7.5.5.4.1-1, A.7.5.5.4.1-2, A.7.5.5.4.1-3, and A.7.5.5.4.1-4 below. There is one cell, cell 1 which is the active cell, in the test. The test consists of five successive time periods, with time duration of T1, T2, T3, T4 and T5 respectively. Figure A.7.5.5.4.1-1 shows the variation of the downlink SNR of the CSI-RS in set q0 in the active cell to emulate CSI-RS based beam failure. Figure A.7.5.5.4.1-1 additionally shows the variation of the downlink L1-RSRP of the CSI-RS in set q1 of the candidate beam used for link recovery. Prior to the start of the time duration T1, the UE shall be fully synchronized to cell 1. The UE shall be configured for periodic CSI reporting with a reporting periodicity of 2 ms. In the test, DRX configuration is enabled in PCell and DRX inactivity timer has already been expired, i.e. UE tries to decode PDCCH and to send periodic CQI during the period when On-duration timer is running. Time alignment timers shall be set to “infinity” so that UL timing alignment is maintained during the test.

Table A.7.5.5.4.1-1: Supported test configurations for FR2 PCell

Configuration

Description

1

TDD duplex mode, 120 kHz SSB SCS, 100 MHz bandwidth

Table A.7.5.5.4.1-2: General test parameters for FR2 PCell for CSI-RS-based beam failure detection and link recovery testing in DRX mode

Parameter

Unit

Value

Comment

Test 1

Active PCell

Cell 1

RF Channel Number

1

Duplex mode

Config 1

TDD

TDD Configuration

Config 1

TDDConf.3.1

CORESET Reference Channel

Config 1

CR.3.1 TDD

A.3.1.2

SSB Configuration

Config 1

SSB.3 FR2

A.3.10

SMTC Configuration

Config 1

SMTC.3

A.3.11

PDSCH/PDCCH subcarrier spacing

Config 1

120 KHz

csi-RS-Index assigned as beam failure detection RS in set q0

0

TRS configuration

TRS.2.1 TDD

TCI configuration

CSI-RS.Config.0

OCNG parameters

OP.1

A.3.2.1

CP length

Normal

Beam failure detection transmission parameters

DCI format

1-0

Number of Control OFDM symbols

2

Aggregation level

CCE

8

Ratio of hypothetical PDCCH RE energy to average CSI-RS RE energy

dB

0

Ratio of hypothetical PDCCH DMRS energy to average CSI-RS RE energy

dB

0

DMRS precoder granularity

REG bundle size

REG bundle size

6

DRX

DRX.3

A.3.3.3

Gap pattern ID

N.A.

csi-RS-Index assigned as candidate beam detection RS in set q1

1

rlmInSyncOutOfSyncThreshold

absent

When the field is absent, the UE applies the value 0. (Table 8.1.1-1).

rsrp-ThresholdSSB

dBm/SCS kHz

-94.5

Threshold used for Qin_LR_SSB

powerControlOffsetSS

db0

Used for deriving rsrp-ThresholdCSI-RS

beamFailureInstanceMaxCount

n1

see clause 5.17 of TS 38.321 [7]

beamFailureDetectionTimer

pbfd4

see clause 5.17 of TS 38.321 [7]

CSI-RS configuration for q0 and q1

Config 1

CSI-RS.3.2 TDD

A.3.14.2

CSI-RS configuration for CSI reporting

Config 1

CSI-RS.3.1 TDD

A.3.14.2

csi-RS-Index assigned as RLM RS

Config 1

CSI-RS.3.2 TDD

A.3.14.2

T310 Timer

ms

1000

N310

2

T1

s

1

During this time the the UE shall be fully synchronized to cell 1

T2

s

5.43

T3

s

5.16

T4

s

0

T5

s

0.31

D1

s

0.27

Note 1: UE-specific PDCCH is not transmitted after T1 starts.

Table A.7.5.5.4.1-3: Cell specific test parameters for FR2 PCell for CSI-RS-based beam failure detection and link recovery testing in DRX mode

Parameter

Unit

Test 1

T1

T2

T3

T4

T5

AoA setup

Setup 1 defined in A.3.15

Assumption for UE beams Note 10

Rough

EPRE ratio of PDCCH DMRS to SSS

dB

0

EPRE ratio of PDCCH to PDCCH DMRS

dB

EPRE ratio of PBCH DMRS to SSS

dB

EPRE ratio of PBCH to PBCH DMRS

dB

EPRE ratio of PSS to SSS

dB

EPRE ratio of PDSCH DMRS to SSS

dB

EPRE ratio of PDSCH to PDSCH DMRS

dB

EPRE ratio of OCNG DMRS to SSS

dB

EPRE ratio of OCNG to OCNG DMRS

dB

SNR_CSI-RS of set q0

Config 1

dB

5

-3

-12

-12

-12

SNR_CSI-RS of set q1

Config 1

dB

0.2

0.2

20.2

20.2

20.2

CSI-RS_RP of set q1

Config 1

dBm/SCS kHz

-104.5

-104.5

-84.5

-84.5

-84.5

Config 1

dBm/120 KHz

-104.7

Propagation condition

TDL-A 30ns 75Hz

Note 1: OCNG shall be used such that the resources in Cell 1 are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

Note 2: The uplink resources for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 3: NZP CSI-RS resource set configuration for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 4: Void

Note 5: The timers and layer 3 filtering related parameters are configured prior to the start of time period T1.

Note 6: The signal contains PDCCH for UEs other than the device under test as part of OCNG.

Note 7: SNR levels correspond to the signal to noise ratio over the REs carrying CSI-RS.

Note 8: The SNR in time periods T1, T2, T3, T4 and T5 is denoted as SNR1, SNR2 and SNR3 respectively in figure A.7.5.5.4.1-1.

Note 9: The SNR values are specified for testing a UE which supports 2RX on at least one band. For testing of a UE which supports 4RX on all bands, the SNR during T3 is modified as specified in clause A.3.6.

Note 10: Information about types of UE beam is given in B.2.1.3 and does not limit UE implementation or test system implementation.

Table A.7.5.5.4.1-4: Void

Table A.7.5.5.4.1-5: Void

Table A.7.5.5.4.1-6: Void

C:\Users\w00527694\Pictures\图片29.png

Figure A.7.5.5.4.1-1: SNR and L1-RSRP variation for CSI-RS-based beam failure detection and link recovery testing in DRX mode

A.7.5.5.4.2 Test Requirements

The UE behaviour during time durations T1, T2, T3, T4 and T5 shall be as follows:

During the time duration T1 and T2, the UE shall transmit uplink signal at least in all subframes configured for CSI transmission on Cell 1.

During the period from time point A to time point B the UE shall transmit uplink signal in Cell 1 in all uplink slots configured for CSI transmission according to the configured periodic CSI reporting for Cell 1.

During T3 the UE shall detect beam failure and initiat link recovery. During T4 and T5 the UE measures and evaluate beam candidate from beam candidate set q1.

No later than time point F occurring no later than D1 = 260+10 ms after the start of T5, the UE shall transmit preamble on a beam associated with the candidate beam set q1. The UE shall not transmit preamble on a beam associated with the candidate beam set q1 earlier than time point B.

Test is concluded once the test equipment has received the initial preamble transmission from the UE. The rate of correct events observed during repeated tests shall be at least 90%.

A.7.5.5.5 Scheduling availability restriction during Beam Failure Detection and Link Recovery for FR2 PCell configured with SSB-based BFD and LR in non-DRX mode

A.7.5.5.5.1 Test Purpose and Environment

The purpose is to test scheduling availability restrictions when the UE is performing beam failure detection or when the UE is performing L1-RSRP measurement for candidate beam detection, when no DRX is used. This test will verify the scheduling availability restriction requirements in clause 8.5.7 and 8.5.8.

The test parameters are given in Tables A.7.5.5.5.1-1, A.7.5.5.5.1-2 and A.7.5.5.5.1-3 below. There is one cell, cell 1 which is the active cell, in the test. The test consists of five successive time periods, with time duration of T1, T2, T3, T4 and T5 respectively. Figure A.7.5.5.5.1-1 shows the variation of the downlink SNR of the SSB in set q0 in the active cell to emulate SSB based beam failure. Figure A.7.5.5.5.1-1 additionally shows the variation of the downlink L1-RSRP of the SSB in set q1 of the candidate beam used for link recovery. Prior to the start of the time duration T1, the UE shall be fully synchronized to cell 1. The UE shall be configured for periodic CSI reporting with a reporting periodicity defined in CSI-RS configuration. This test will focus on the scheduling availability during beam failure detection) and candidate beam detection. In the test, DRX configuration is not enabled. Test is to test the scheduling availability restriction of UE performing beam failure detection and candidate beam detection when SSB RS configured for Beam failure detection and candidate beam detection. During the test the UE is scheduled to transmit continuously in UL.

Table A.7.5.5.5.1-1: Supported test configurations for FR2 PCell

Configuration

Description

1

NR 120 kHz SSB SCS, 100MHz bandwidth, TDD duplex mode

Note: The UE is only required to be tested in one of the supported test configurations

Table A.7.5.5.5.1-2: General test parameters for FR2 PCell for SSB-based beam failure detection and link recovery testing in non-DRX mode

Parameter

Unit

Value

Comment

Test 1

Active PCell

Cell 1

RF Channel Number

1

Duplex mode

Config 1

TDD

TDD Configuration

Config 1

TDDConf.3.1

DL initial BWP configuration

Config 1

DLBWP.0.1

DL dedicated BWP configuration

Config 1

DLBWP.1.1

UL initial BWP configuration

Config 1

ULBWP.0.1

UL dedicated BWP configuration

Config 1

ULBWP.1.1

CORESET Reference Channel

Config 1

CR. 3.1 TDD

SSB Configuration

Config 1

SSB.1 FR2

SMTC Configuration

Config 1

SMTC.1

PDSCH/PDCCH subcarrier spacing

Config 1

120 KHz

SSB index assigned as BFD RS (q0)

0

SSB index assigned as CBD RS (q1)

1

TRS configuration

TRS.2.1 TDD

TCI configuration

TCI.State.0

OCNG parameters

OP.1

AoA Setup

Setup 1

A.3.15.1

CP length

Normal

Beam failure detection transmission parameters

DCI format

1-0

Number of Control OFDM symbols

2

Aggregation level

CCE

8

Ratio of hypothetical PDCCH RE energy to average CSI-RS RE energy

dB

0

Ratio of hypothetical PDCCH DMRS energy to average CSI-RS RE energy

dB

0

DMRS precoder granularity

REG bundle size

REG bundle size

6

DRX

OFF

DRX is not in use

Gap pattern ID

N.A.

No measurement gap pattern is configured

ssb-Index

2

Number of SSB indexes used for beam failure detection

rlmInSyncOutOfSyncThreshold

absent

When the field is absent, the UE applies the 10%

rsrp-ThresholdSSB

dBm/SCS kHz

-94.5

Threshold used for Qin_LR_SSB

powerControlOffsetSS

db0

Used for deriving rsrp-ThresholdCSI-RS

beamFailureInstanceMaxCount

n1

see TS 38.321 [7], clause 5.17

beamFailureDetectionTimer

pbfd4

see TS 38.321 [7], clause 5.17

CSI Configuration for reporting

Config 1

CSI-RS.3.1 TDD

A.3.14.2

T310 Timer

ms

1000

N310

2

T1

s

1

During this time the the UE shall be fully synchronized to cell 1

T2

s

2.6

T3

s

1.64

T4

s

0

T5

s

1.01

D1

s

0.97

Note 1: All configurations are assigned to the UE prior to the start of time period T1.

Note 2: UE-specific PDCCH is not transmitted after T1 starts.

Table A.7.5.5.5.1-3: Cell specific test parameters for FR2 PCell for SSB-based beam failure detection and link recovery testing in non-DRX mode

Parameter

Unit

Test 1

T1

T2

T3

T4

T5

Assumption for UE beams Note 10

Rough

EPRE ratio of PDCCH DMRS to SSS

dB

0

EPRE ratio of PDCCH to PDCCH DMRS

dB

EPRE ratio of PBCH DMRS to SSS

dB

EPRE ratio of PBCH to PBCH DMRS

dB

EPRE ratio of PSS to SSS

dB

EPRE ratio of PDSCH DMRS to SSS

dB

EPRE ratio of PDSCH to PDSCH DMRS

dB

EPRE ratio of OCNG DMRS to SSS

dB

EPRE ratio of OCNG to OCNG DMRS

dB

SNR_SSB of set q0

Config 1

dB

5

-3

-12

-12

-12

SSB_RP of set q1

Config 1

dBm/SCS kHz

-104.5

-104.5

-84.5

-84.5

-84.5

SNR_SSB of set q1

Config 1

dB

-12

-12

5

5

5

Config 1

dBm/15KHz

-104.7

Propagation condition

TDL-A 30ns 75Hz

Note 1: OCNG shall be used such that the resources in Cell 1 are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

Note 2: The uplink resources for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 3: NZP CSI-RS resource set configuration for CSI reporting are assigned to the UE prior to the start of time period T1.

Note 4: Void

Note 5: The timers and layer 3 filtering related parameters are configured prior to the start of time period T1.

Note 6: The signal contains PDCCH for UEs other than the device under test as part of OCNG.

Note 7: SNR levels correspond to the signal to noise ratio over the SSS REs.

Note 8: The SNR in time periods T1, T2, T3, T4 and T5 is denoted as SNR1, SNR2 and SNR3 respectively in figure A.7.5.5.5.1-1.

Note 9: The SNR values are specified for testing a UE which supports 2RX on at least one band. For testing of a UE which supports 4RX on all bands, the SNR during T3 is modified as specified in clause A.3.6.

Note 10: Information about types of UE beam is given in B.2.1.3 and does not limit UE implementation or test system implementation.

C:\Users\w00527694\Pictures\图片28.png

Figure A.7.5.5.5.1-1: SNR and L1-RSRP variation SSB for SSB-based beam failure detection and link recovery testing in non-DRX mode

A.7.5.5.5.2 Test Requirements

The UE behaviour during time duration T3 follows the requirements defined in clause 8.5.7.3:

– The UE is not expected to transmit PUCCH/PUSCH/SRS or receive PDCCH/PDSCH/CSI-RS for tracking/CSI-RS for CQI on BFD-RS symbols to be measured for beam failure detection.

The UE behaviour during time durations T4 and T5 follows the requirements defined in clause 8.5.8.3:

– The UE is not expected to transmit PUCCH/PUSCH or receive PDCCH/PDSCH on reference symbols to be measured for candidate beam detection.