8.1.6 E-UTRAN TDD UE Rx–Tx time difference under Time Domain Measurement Resource Restriction with CRS Assistance Information and Non-MBSFN ABS (feICIC)

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

8.1.6.1 Test purpose

The purpose of this test is to verify that the E-UTRAN TDD UE Rx – Tx time difference measurement accuracy is within the specified limits in TS 36.133 [23] clause 9.1.9.4 when the UE is provided with a time-domain measurement resource restriction pattern and CRS assistance information, and when non-MBSFN ABS is configured in the interfering cells.

8.1.6.2 Test applicability

This test applies to all types of E-UTRA TDD UE release 11 and forward with LPP release 13 onwards that supports ECID positioning and CRS interference handling. Applicability requires support of FGI bit 115. Note that for LPP releases before release 13 the UE Rx – Tx time difference measurement report mapping is ambiguous and therefore this test shall not be used.

8.1.6.3 Minimum conformance requirements

NOTE: This measurement is used for UE positioning purposes.

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

For UE configured with a time-domain measurement resource restriction pattern for PCell measurements, the accuracy requirements in Table 8.1.5.3-1 apply provided that the following conditions are met for the PCell:

PCell cell specific reference signals are transmitted from one, two or four antenna ports,

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.4 for a corresponding Band,

The time domain measurement resource restriction pattern configured for the measured cell indicates at least one subframe per radio frame for performing the RSRP measurement,

Four symbols containing CRS are available in all subframes indicated by the time domain measurement resource restriction pattern, and

The UE is provided via PCell with the CRS assistance information (TS 36.331 [22]) and the CRS assistance information is valid throughout the entire evaluation period.

The requirements in this section shall also be met when the number of transmit antenna ports TS 36.211 [26] of one or more cells whose CRS assistance information is provided TS 36.331 [22] is different from the number of transmit antenna ports of the measured cell.

When the CRS assistance information is provided, the transmission bandwidth in all intra-frequency cells in the CRS assistance information is the same or larger than the transmission bandwidth of the PCell for which measurement is performed.

Table 8.1.6.3-1: TDD UE Rx – Tx time difference measurement accuracy

Accuracy

Conditions

CRS Ês/Iot Note 9

Downlink transmission bandwidth of PCell

Io range Note 8

E-UTRA operating band groups Note 6

Minimum Io

Maximum Io

Ts Note 2

dB

MHz

dBm/15kHz Note 5

dBm/BWChannel

±20

≥-7.76 dB

≤ 3 MHz

FDD_A Note 7, TDD_A

-121

-50

FDD_B

-120.5

-50

FDD_C, TDD_C

-120

-50

FDD_D

-119.5

-50

FDD_E, TDD_E

-119

-50

FDD_F

-118.5

-50

FDD_G Note 4

-118

-50

FDD_H

-117.5

-50

FDD_N

-114.5

-50

±10

≥-7.76 dB

≥ 5 MHz

Note 3

Note 3

Note 3

NOTE 1: This Io condition is expressed as the average Io per RE over all REs in an OFDM symbol.

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: Io is defined in subframes indicated for PCell measurements by the time domain measurement resource restriction pattern. The specified Io range applies to CRS and non-CRS symbols. Io may be different in different symbols within a subframe.

NOTE 9: CRS Ês/Iot is in subframes indicated for PCell measurements by the time-domain measurement resource restriction pattern.

NOTE: It is up to the UE implementation whether the UE Rx-Tx time difference measurement is performed in any subframe or in subframes indicated by the time-domain measurement resource restriction pattern.

The normative reference for this requirement is TS 36.133 [23] clause 9.1.9.4 and A.9.7.6.

8.1.6.4 Test description

The test has two test points with time delays starting at 32 TS and 5008 TS, respectively. In this test case, there are three cells, Cell 1, Cell 2 and Cell 3, on the same RF channel. Cell 1 is the PCell on which UE Rx-Tx is measured. Cell 2 and Cell 3 are the interfering cells. A non-MBSFN ABS pattern is configured in each of the Cell 2 and Cell 3 during the entire test. The tested UE is connected to the PCell and configured to transmit SRS signals periodically. The SRS configuration is provided to the UE before the measurement starts. The UE is configured 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. The UE is configured by higher layers via Cell 1 with a time-domain measurement resource restriction pattern for performing E-UTRAN FDD intra-frequency measurements on PCell. The UE is also provided via higher layers with the CRS assistance information for Cell 2. The information for both measurement patterns and the CRS assistance information shall be provided via RRC to the UE before the measurement starts.

8.1.6.4.1 Initial conditions

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

Frequencies to be tested: According to TS 36.521-1 [24] Annex E table E-1 and TS 36.508 [18] clauses 4.4.2 and 4.3.1.

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 TS 36.508 [18] Annex A Figure A.54 (without faders).

2. Propagation conditions are set according to clause 4.6.2.1.

3. Message contents are defined in clause 8.1.6.4.3.

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. Cell 2 and Cell 3 are the neighbour cells. All cells are on the same RF channel. Cell 3 in the test is the Cell 4 defined in clause 4.7.1

Table 8.1.6.4.1-1: General test parameters for TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Parameter

Unit

Value

Comment

Serving cell (PCell)

Cell 1

Cell to be measured

Neighbour cell

Cell 2 and Cell 3

Cell 2 is the first interfering cell to Cell 1, whilst Cell 3 is the second interfering cell to Cell 1.

ABS transmission configuration

Non-MBSFN ABS

As defined in TS 36.521-3 [25] Table C.3.1.2.1-1

E-UTRA RF Channel Number

1

One TDD carrier frequency is used

Downlink Channel Bandwidth (BWchannel)

MHz

10

For all cells in the test

CP length

Normal

For all cells in the test

Special subframe configuration

6

For all cells in the test. For special subframe configurations see Table 4.2-1 in TS 36.211 [26].

Uplink/downlink subframe configuration

1

For all cells in the test. For uplink-downlink subframe configurations see Table 4.2-2 in TS 36.211 [26].

DRX

OFF

Time offset between cells

μs

Cell 2 offset with respect to Cell 1: 3

Cell 3 offset with respect to Cell 1: 2

Three synchronous cells

Physical cell ID PCI

(PCIcell1 – PCIcell2 )mod6 =0

(PCIcell1 – PCIcell3 )mod6 !=0

PCIcell1 not equal to PCIcell2

Cell PCIs are selected so that both conditions are met

ABS pattern

‘00000000010000000001’

Non-MBSFN ABS. TDD ABS Pattern Info IE, as defined in TS 36.423 [35], clause 9.2.54.

The first/leftmost bit corresponds to the PCell subframe #0 of a radio frame satisfying SFN mod x = 0, where x is the size of the bit string (20) divided by 10. No MBSFN subframes are configured in the ABS subframes. Configured in Cell 2 and Cell 3 during the testing.

Time-domain measurement resource restriction pattern for serving cell measurements

‘00000000010000000001’

Configured for measurements on Cell 1.

CRS assistance information

physCellId

see PCI conditions above

The CRS assistance information is provided for Cell 2 and Cell 3 in CRS-AssistanceInfo. It includes a single MBSFN-SubframeConfig element with subframe allocation one Frame=’000000’.

antennaPortsCount

1

mbsfn-SubframeConfigList

oneFrame = ‘000000’

8.1.6.4.2 Test procedure

1. Bring the UE to State 3A or 3A-RF according to TS 36.508 [18] clause 4.5.3A or 5.2A.2, with exceptions listed in 7.2A.6 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 Tables 8.1.6.5-1 and 8.1.6.5-2 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 +4 TS, compared to the current value.

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

5. The SS shall transmit an LPP REQUEST CAPABILITIES message.

6. The UE shall transmit an LPP PROVIDE CAPABILITIES message indicating the ECID capabilities supported by the UE in the ECID-ProvideCapabilities IE. The IE ueRxTxSupTDD-r13 shall be present (TRUE).

7. 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.

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

9. As soon as possible after step 8 the SS shall measure the transmit timing of the UE using the transmitted SRS, relative to the current downlink timing.

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

11. The SS shall check the reported value of ue-RxTxTimeDiff in the ecid-SignalMeasurementInformation IE provided by the UE in step 8 and compare it with the value measured in step 9. The SS shall check that the reported value is within the limits specified in table 8.1.6.5-3 for test compared to the measured value. If the reported value is within the limits the number of successful results for test 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 8, or does not respond at step 8 within the time given by the time IE in the ECID-RequestLocationInformation IE in step 7, then the number of unsuccessful results for testis increased by one.

12. Repeat steps 3-11 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.

13. Repeat steps 1-12 for test point 2.

8.1.6.4.3 Message contents

Message contents are according to TS 36.508 [18] clause 5.2A.5.1 with the following exceptions:

Table 8.1.6.4.3-1: SoundingRS-RL-ConfigCommon-DEFAULT: TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

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

bw0

srs-SubframeConfig

sc1

FDD

ackNackSRS-SimultaneousTransmission

FALSE

srsMaxUpPts

Not present

FDD

}

}

Table 8.1.6.4.3-2: SoundingRS-RL-ConfigDedicated-DEFAULT: TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

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

bw5

srs-HoppingBandwidth

hbw0

freqDomainPosition

0

duration

TRUE

Indefinite duration

srs-ConfigIndex

0

transmissionComb

0

cyclicShift

cs0

No cyclic shift

}

}

Table 8.1.6.4.3-3: LPP REQUEST CAPABILITIES: TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Information Element

Value/remark

ecid‑RequestCapabilities

TRUE

Table 8.1.6.4.3-3a: LPP PROVIDE CAPABILITIES: TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Information Element

Value/remark

ueRxTxSupTDD-r13

TRUE

Table 8.1.6.4.3-4: ECID-RequestLocationInformation: TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Derivation Path: TS 36.355 [4] 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

}

}

}

}

}

}

}

Table 8.1.6.4.3-5: ECID-ProvideLocationInformation: TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Derivation Path: TS 36.355 [4] clause 6.2

Information Element

Value/remark

Comment

Condition

LPP-Message ::= SEQUENCE {

transactionID SEQUENCE {

Initiator

locationServer

transactionNumber

1

}

endTransaction

TRUE

sequenceNumber

(0..255)

acknowledgement

lpp-MessageBody CHOICE {

c1 CHOICE {

provideLocationInformation SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

provideLocationInformation-r9 SEQUENCE {

commonIEsProvideLocationInformation

Not present.

a-gnss-ProvideLocationInformation

Not present

otdoa-ProvideLocationInformation

Not present

ecid-ProvideLocationInformation ::=

SEQUENCE {

ecid-SignalMeasurementInformation ::=

SEQUENCE {

primaryCellMeasuredResults

Not Present

MeasuredResultsList ::= SEQUENCE

(SIZE(1..32)) OF

MeasuredResultsElement

MeasuredResultsElement ::= SEQUENCE {

physCellId

cellGlobalId

arfcnEUTRA

systemFrameNumber

rsrp-Result

Not Present

rsrq-Result

Not Present

ue-RxTxTimeDiff

Set according to specific sub-test and test point.

}

}

}

epdu-ProvideLocationInformation

Not present

}

}

}

}

}

}

}

Table 8.1.6.4.3-6: RadioResourceConfigDedicated-SRB2-DRB(n, m): TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Derivation Path: TS 36.508 [18] clause 4.6.3, Table 4.6.3-16

Information Element

Value/remark

Comment

Condition

neighCellsCRS-Info-r11 ::= CHOICE {

NeighCellsCRS-Info-r11 ::= CHOICE {

Release

NULL

Setup

CRS-AssistanceInfoList-r11

}

}

Table 8.1.6.4.3-7: RadioResourceConfigDedicated-SRB2-DRB(n, m): TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Derivation Path: TS 36.508 [18] clause 4.6.3, Table 4.6.3-16

Information Element

Value/remark

Comment

Condition

CRS-AssistancedInfoList-r11 ::= SEQUENCE (SIZE (1..maxCellReport)) OF CRS-AssistanceInfo-r11

CRS-AssistancedInfo-r11 ::= SEQUENCE {

physCellId-r11

(PCIcell1 – PCIcell3 )mod6 = 0

(PCIcell2 – PCIcell3 )mod6 != 0

Cell PCIs are selected so that both conditions are met

antennaPortsCount-r11

an1

mbsfn-SubframeConfigList-r11

MBSFN-SubframeConfigList

}

Table 8.1.6.4.3-8: RadioResourceConfigDedicated-SRB2-DRB(n, m): TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Derivation Path: TS 36.508 [18] clause 4.6.3, Table 4.6.3-16

Information Element

Value/remark

Comment

Condition

MBSFN-SubframeConfigList ::= SEQUENCE (SIZE (1..maxMBSFN-Allocations)) OF MBSFN-SubframeConfig

MBSFN-SubframeConfig:: = SEQUENCE {

subframeAllocation CHOICE {

oneFrame

‘000000’

Only the CRS information of Cell 2 is provided in CRS-AssistanceInfo. It includes a single MBSFN-SubframeConfig element with subframe allocation one Frame=’000000’BIT STRING (SIZE(6))

}

}

Table 8.1.6.4.3-9: RadioResourceConfigDedicated-SRB2-DRB(n, m): Additional TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS (feICIC)

Derivation Path: TS 36.508 [18] clause 4.6.3, Table 4.6.3-16 RadioResourceConfigDedicated-SRB2-DRB(n,m)

Information Element

Value/remark

Comment

Condition

RadioResourceConfigDedicated-SRB2-DRB(n, m) ::= SEQUENCE {

MeasSubframePatternPCell-r10 CHOICE {

setup SEQUENCE {

subframePatternTDD-r10

subframeConfig1-5-r10

‘00000000010000000001’

BIT STRING (SIZE (20))

Cell 1

}

}

}

8.1.6.5 Test requirement

Table 8.1.6.5-1 defines the primary level settings including test tolerances for the test.

The UE Rx – Tx time difference measurement accuracy shall fulfil the requirements in Table 8.1.6.5-3.

Table 8.1.6.5-1: Test parameters test parameters for TDD UE Rx–Tx time difference measurement under time-domain measurement resource restriction with CRS assistance information and non-MBSFN ABS

Parameter

Unit

Cell 1

Cell 2

Cell 3

E-UTRAN RF Channel Number

1

1

1

PDSCH Reference measurement channel defined in TS 36.521-3 [25] A.1.2

R.0 TDD

N/A

N/A

PDSCH allocation

13—36

N/A

N/A

PDCCH/PCFICH/PHICH Reference measurement channel defined in TS 36.521-3 [25] A.2.2

R.6 TDD

N/A

N/A

OCNG Patterns defined in TS 36.521-3 [25] D.2.1 (OP.1 TDD) and D.2.2 (OP.2 TDD)

OP.1 TDD

OP.2 TDD

OP.2 TDD

PBCH_RA

dB

0

Non-ABS and ABS subframe channel powers defined in TS 36.521-3 [25] Table C.3.1.2.1-1

PBCH_RB

dB

PSS_RA

dB

SSS_RA

dB

PCFICH_RB

dB

PHICH_RA

dB

PHICH_RB

dB

PDCCH_RA

dB

PDCCH_RB

dB

PDSCH_RA

dB

PDSCH_RB

dB

OCNG_RANote1

dB

OCNG_RBNote1

dB

Note2

dBm/15 kHz

-98

-98

-98

CRS

dB

-2.60

3

1

CRS Note 3

dB

-7.36

1.10

-0.90

CRS Note 3

dB

-8.89

-1.48

-4.50

RSRP Note 4

dBm/15 kHz

-100.6

-95

-97

Note 4

dBm/9 MHz

Note 4

dBm/9 MHz

-63.40

-63.40

-63.40

Propagation Condition

AWGN

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

Note 2: Interference from other cells and noise sources not specified in the test is assumed to be constant over subcarriers and time and shall be modelled as AWGN of appropriate power for to be fulfilled.

Note 3: is calculated in CRS REs in the subframes indicated for PCell measurements by measurement resource restriction pattern, whilst is calculated in CRS REs in the subframes not indicated for PCell measurements by measurement resource restriction pattern.

Note 4: RSRP and Io levels have been derived from other parameters for information purposes. They are not settable parameters themselves. is calculated in CRS symbols in the subframes indicated for PCell measurements by measurement resource restriction pattern, whilst is calculated in CRS symbols

Table 8.1.6.5-2: Sounding Reference Symbol Configuration to be used in FDD UE Rx–Tx time difference test

Field

Value

Comment

UL bandwidth

50 RBs

Same as the DL bandwidth

srsBandwidthConfiguration

bw5

srsSubframeConfiguration

sc1

ackNackSrsSimultaneousTransmission

FALSE

srsMaxUpPTS

TRUE

srsBandwidth

0

No hopping

srsHoppingBandwidth

hbw0

frequencyDomainPosition

0

Duration

TRUE

Indefinite duration

Srs-ConfigurationIndex

10

SRS periodicity of 10ms 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].

Table 8.1.6.5-3: Test requirements UE Rx – Tx time difference measurement accuracy requirements

Test requirement

Lowest reported value

(Measured value from step 7 – 13) Ts converted to RX-TX_TIME_DIFFERENCE according to Table 4.6.3-2

Highest reported value

(Measured value from step 7 + 13) Ts converted to RX-TX_TIME_DIFFERENCE according to Table 4.6.3-2

NOTE: The test in table 8.1.6.5-3 has two test points starting at 32 Ts and 5008 Ts.

The test tolerances are defined in Annex C.

For the overall test to pass, the ratio of successful reported values in each test point shall be more than 90% with a confidence level of 95%.