8.1.7 E-UTRAN FDD UE Rx-Tx time difference case for Category M1/M2 UE in CEModeA

37.571-13GPPPart 1: Conformance test specificationRelease 16TSUser Equipment (UE) conformance specification for UE positioning

8.1.7.1 Test purpose

The purpose of this test is to verify that the E-UTRAN FDD UE Rx – Tx time difference measurement accuracy for Category M1/M2 UEs is within the specified limits in TS 36.133 [23] clause 9.1.21.19 and 9.1.25.3.

8.1.7.2 Test applicability

This test applies to E-UTRA FDD UE Category M1/M2 release 14 and forward that supports ECID positioning.

8.1.7.3 Minimum conformance requirements

NOTE: This measurement is used for UE positioning purposes.

The UE RX-TX time difference is measured from the PCell.

The accuracy requirements in Table 8.1.7.3-1 are valid under the following conditions:

Conditions defined in TS 36.101 [2] clause 7.3 for reference sensitivity are fulfilled.

No changes to the uplink transmission timing are applied during the measurement period.

RSRP|dBm according to clause E.1-1 for a corresponding Band.

Table 8.1.7.3-1: UE Rx – Tx time difference measurement accuracy for CEModeA

Accuracy

Conditions

Ês/Iot

Downlink transmission bandwidth of PCell

Io Note 1 range

E-UTRA operating band groups Note 6

Minimum Io

Maximum Io

Ts Note 2

dB

MHz

dBm/15kHz Note 5

dBm/BWChannel

±20

≥-3 dB

≥ 6

FDD-M1_A, TDD-M1_A

-121

-50

FDD-M1_B

-120.5

-50

FDD-M1_C, TDD-M1_C

-120

-50

FDD-M1_D

-119.5

-50

FDD-M1_E, TDD-M1_E

-119

-50

FDD-M1_F

-118.5

-50

FDD-M1_G

-118

-50

FDD-M1_H

-117.5

-50

FDD-M1_N

-114.5

-50

±10 Note 8

≥-3 dB

≥ 24

Note 3

Note 3

Note 3

NOTE 1: When in dBm/15kHz, the minimum Io condition is expressed as the average Io per RE over all REs in that symbol. Io may be different in different symbols within a subframe.

NOTE 2: Ts is the basic timing unit defined in TS 36.211 [26].

NOTE 3: The same bands and the same Io conditions for each band apply for this requirement as for the corresponding requirement with downlink bandwidth ≤ 3 MHz.

NOTE 4: Except Band 29.

NOTE 5: The condition level is increased by ∆>0, when applicable, as described in TS 36.521-3 [25] Sections I.4.2 and I.4.3.

NOTE 6: E-UTRA operating band groups are as defined in Section 4.4.2.

NOTE 7: Except Band 32.

NOTE 8: Only for Category M2.

The normative reference for this requirement is TS 36.133 [23] clause 9.1.21.19, 9.1.25.3 and A.9.7.7.

8.1.7.4 Test description

There is only one active cell in the tests. The tested UE is connected with the serving cell, configured to transmit SRS signals periodically, and signalled to report UE Rx – Tx time difference measurement. The test equipment measures the transmit timing of the UE using the transmitted SRS. The test equipment then compares this timing to the UE Rx-Tx measurement reported by the UE.

8.1.7.4.1 Initial conditions

Test Environment: Normal as defined in TS 36.508 [18] clause 4.1.

Frequencies to be tested: Mid Range, as defined in TS 36.508 [18] clause 4.3.1.1.

Channel Bandwidth to be tested: 10 MHz as defined in TS 36.508 [18] clause 4.3.1.

1. Connect the SS (node B emulator) and AWGN noise source to the UE antenna connectors as shown in Annex A figure A.5.

2. Propagation conditions are set according to clause 4.6.2.1.

3. Message contents are defined in clause 8.1.7.4.3.

4. Cell 1 is the serving cell. Cell 1 is the cell used for connection setup with the power levels set according to TS 36.521-3 [25] clauses C.0 and C.1 for this test.

8.1.7.4.2 Test procedure

1. Bring the UE to Generic RB Established State 3A-RF-CE according to 3GPP TS 36.508 [18] clause 7.2A.3AA, using a value of initial timing advance command TA = 2 in the Random Access Response which indicates an initial timing advance value NTA = 32 Ts. Note that in the remainder of the test the timing advance command TA = 31 which indicates a timing advance adjustment value NTA = 0 Ts.

2. Set the parameters according to Table 8.1.7.5-1 and 8.1.7.5-2 as appropriate. Propagation conditions are set according to clause 4.6.2.1.

3. The SS adjusts the downlink timing for Cell 1 to a delay of +8 TS, compared to the current value.

4. Wait for 1.6 s to allow for the possibility that the UE makes autonomous timing adjustments.

4a. The SS shall transmit an LPP REQUEST CAPABILITIES message.

4b. The UE shall transmit an LPP PROVIDE CAPABILITIES message indicating the ECID capabilities supported by the UE in the ECID-ProvideCapabilities IE.

5. The SS shall transmit an LPP REQUEST LOCATION INFORMATION message, including the ECID‑RequestLocationInformation IE. If the UE message at step 4b includes the ackRequested IE set to TRUE, then the SS shall send an acknowledgment in the LPP REQUEST LOCATION INFORMATION message.

6. The UE shall transmit an LPP PROVIDE LOCATION INFORMATION message including the ecid-SignalMeasurementInformation IE.

7. As soon as possible after step 6 the SS shall measure the transmit timing of the UE using the transmitted SRS, relative to the current downlink timing.

8. If the UE message at step 6 includes the ackRequested IE set to TRUE, then the SS shall send a LPP acknowledgment message.

9. The SS shall check the reported value of ue-RxTxTimeDiff in the ecid-SignalMeasurementInformation IE provided by the UE in step 6 and compare it with the value measured in step 7. The SS shall check that the reported value is within the limits specified in table 8.1.7.5-3 compared to the measured value. If the reported value is within the limits the number of successful results is increased by one. If the reported value is not within the limits, or the UE reports an error in the LPP PROVIDE LOCATION INFORMATION message in step 6, or does not respond at step 6 within the time given by the time IE in the ECID-RequestLocationInformation IE in step 5, then the number of unsuccessful results is increased by one.

10. Repeat steps 3-9 until the confidence level according to Annex D.4.3 is achieved.
NOTE: To avoid a large divergence between the sent TA and the set downlink timing, the SS may reset the downlink timing for Cell 1 to its initial value after a certain amount of loops. The loop during the reset does not count for the result statistics.

8.1.7.4.3 Message contents

Message contents are according to TS 36.508 [18] clause 4.6 with the following exceptions:

Table 8.1.7.4.3-1: SoundingRS-RL-ConfigCommon-DEFAULT: UE Rx – Tx time difference for E-UTRAN FDD test requirement

Derivation Path: TS 36.508 [18] clause 4.6.3, Table 4.6.3-21 SoundingRS-UL-ConfigCommon-DEFAULT

Information Element

Value/remark

Comment

Condition

SoundingRS-UL-ConfigCommon-DEFAULT ::= SEQUENCE {

setup SEQUENCE {

srs-BandwidthConfig

bw5

srs-SubframeConfig

sc1

FDD

ackNackSRS-SimultaneousTransmission

FALSE

srsMaxUpPts

Not present

FDD

}

Table 8.1.7.4.3-2: SoundingRS-RL-ConfigDedicated-DEFAULT: UE Rx – Tx time difference for E-UTRAN FDD test requirement

Derivation Path: TS 36.508 [18] clause 4.6.3, Table 4.6.3-22 SoundingRS-UL-ConfigDedicated-DEFAULT

Information Element

Value/remark

Comment

Condition

SoundingRS-UL-ConfigDedicated-DEFAULT ::= CHOICE {

setup SEQUENCE {

srs-Bandwidth

bw0

bw0 used with no frequency hopping. bw3 used with frequency hopping

srs-HoppingBandwidth

hbw0

freqDomainPosition

0

duration

TRUE

Indefinite duration

srs-ConfigIndex

0

transmissionComb

0

cyclicShift

cs0

No cyclic shift

}

}

Table 8.1.7.4.3-2a: LPP REQUEST CAPABILITIES: UE Rx – Tx time difference for E-UTRAN FDD test requirement

Information Element

Value/remark

ecid‑RequestCapabilities

TRUE

Table 8.1.7.4.3-3: ECID-RequestLocationInformation: UE Rx – Tx time difference for E-UTRAN FDD test requirement

Derivation Path: TS 36.355 clause 6.2

Information Element

Value/remark

Comment

Condition

LPP-Message ::= SEQUENCE {

transactionID SEQUENCE {

Initiator

locationServer

transactionNumber

1

}

endTransaction

FALSE

sequenceNumber

Not present

acknowledgement

Not present

lpp-MessageBody CHOICE {

c1 CHOICE {

requestLocationInformation SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

requestLocationInformation-r9 SEQUENCE {

commonIEsRequestLocationInformation

SEQUENCE {

locationInformationType

locationMeasurementsRequired

triggeredReporting

Not present

periodicalReporting

Not present

additionalInformation

onlyReturnInformationRequested

qos SEQUENCE {

horizontalAccuracy

Not present

verticalCoordinateRequest

FALSE

verticalAccuracy

Not present

responseTime SEQUENCE {

time

2

responseTimeEarlyFix-r12

Not present

Rel-12 onwards

}

velocityRequest

FALSE

}

environment

Not present

locationCoordinateTypes

Not present

velocityTypes

Not present

}

a-gnss-RequestLocationInformation

Not present

otdoa-RequestLocationInformation

Not present

ecid-RequestLocationInformation ::=

SEQUENCE {

requestedMeasurements

0 0 1

ueRxTxReq

}

epdu-RequestLocationInformation

Not Present

}

}

}

}

}

}

}

8.1.7.5 Test requirement

Table 8.1.7.5-1 defines the primary level settings including test tolerances.

Table 8.1.7.5-1: FDD UE Rx – Tx time difference test parameters

Parameter

Unit

Test 1

E-UTRAN RF Channel Number

1

Channel Bandwidth (BWchannel)

MHz

10

DRX

OFF

PRACH Configuration

PRACH_4CE As specified in TS 36.133 [23] A.3.16

MPDCCH Reference measurement channelNote1

R.16 FDD

OCNG PatternNote2

OP.21 FDD

PBCH_RA

dB

0

PBCH_RB

dB

PSS_RA

dB

SSS_RA

dB

PHICH_RA

dB

PHICH_RB

dB

MPDCCH_RA

dB

MPDCCH_RB

dB

OCNG_RANote3

dB

OCNG_RBNote3

dB

dBm/15 kHz

-98

dB

-2.7

dB

-2.7

IoNote4

dBm/9 MHz

-65.5

Propagation Condition

AWGN

Note 1: For the reference measurement channels, see TS 36.521-3 [25] A.7.1

Note 2: For the OCNG pattern, see clause A.3.2.

Note 3: OCNG shall be used such that both cells are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols.

Note 4: Io level has been derived from other parameters for information purpose. It is not a settable parameter.

Table 8.1.7.5-2: Sounding Reference Symbol Configuration to be used in FDD UE Rx – Tx time difference test

Field

Test 1

Comment

srsBandwidthConfiguration

bw5

srsSubframeConfiguration

sc1

ackNackSrsSimultaneousTransmission

FALSE

srsMaxUpPTS

N/A

Not applicable for FDD

srsBandwidth

0

No hopping

srsHoppingBandwidth

hbw0

frequencyDomainPosition

0

Duration

TRUE

Indefinite duration

Srs-ConfigurationIndex

0

SRS periodicity of 2ms for all Tests.

transmissionComb

0

cyclicShift

cs0

No cyclic shift

SRS-AntennaPort

an1

Number of antenna ports used for SRS transmission

Note: For further information see clause 6.3.2 in TS 36.331 [22].

The UE Rx – Tx time difference measurement accuracy shall fulfil the requirements in Table 8.1.7.5-3.

Table 8.1.7.5-3: Test requirements UE Rx – Tx time difference measurement accuracy requirements

Lowest reported value

Category M1: (Measured value from step 7 – 23) Ts converted to RX-TX_TIME_DIFFERENCE according to Table 4.6.3-1

Category M2: (Measured value from step 7 – 13) Ts converted to RX-TX_TIME_DIFFERENCE according to Table 4.6.3-1

Highest reported value

Category M1: (Measured value from step 7 + 23) Ts converted to RX-TX_TIME_DIFFERENCE according to Table 4.6.3-1

Category M2: (Measured value from step 7 + 13) Ts converted to RX-TX_TIME_DIFFERENCE according to Table 4.6.3-1

The test tolerances are defined in Annex C.

The rate of successful tests during repeated tests shall be at least 90% with a confidence level of 95%.