9.1.2 TDD RSTD Measurement Reporting Delay

37.571-13GPPPart 1: Conformance test specificationTSUniversal Terrestrial Radio Access (UTRA) and Evolved UTRA (E-UTRA) and Evolved Packet Core (EPC)User Equipment (UE) conformance specification for UE positioning

9.1.2.1 Test purpose

To verify that the RSTD measurement reporting delay meets the requirements in an environment with fading propagation conditions.

9.1.2.2 Test applicability

This test applies to all types of E-UTRA TDD UE release 9 and forward that supports UE-assisted OTDOA except UE Category 1bis.

9.1.2.3 Minimum conformance requirements

When the physical layer cell identities of neighbour cells together with the OTDOA assistance data are provided, the UE shall be able to detect and measure intra-frequency RSTD, specified in 3GPP TS 36.214 [6], for at least n=16 cells, including the reference cell, on the same carrier frequency f1 as that of the reference cell within ms as given below:

,

where

is the total time for detecting and measuring at least n cells,

is the cell-specific positioning subframe configuration period as defined in 3GPP TS 36.211 [26],

is the number of PRS positioning occasions as defined in Table 9.1.2.3-1, where each PRS positioning occasion comprises of (1≤≤6) consecutive downlink positioning subframes defined in 3GPP TS 36.211 [26], and

= ms is the measurement time for a single PRS positioning occasion which includes the sampling time and the processing time.

Table 9.1.2.3-1: Number of PRS positioning occasions within

Positioning subframe configuration period

Number of PRS positioning occasions

f1 Note 1

160 ms

16

>160 ms

8

Note 1: When only intra-frequency RSTD measurements are performed over cells belonging to the serving FDD carrier frequency f1.

The UE physical layer shall be capable of reporting RSTD for the reference cell and all the neighbour cells i out of at least (n-1) neighbour cells within provided:

-6 dB for all Frequency Bands for the reference cell,

-13 dB for all Frequency Bands for neighbour cell i,

and conditions apply for all subframes of at least PRS positioning occasions,

PRP 1,2|dBm according to clause E.2 for a corresponding Band.

The time starts from the first subframe of the PRS positioning occasion closest in time after both the OTDOA-RequestLocationInformation message and the OTDOA assistance data in the OTDOA-ProvideAssistanceData message as specified in 3GPP TS 36.355 [4], are delivered to the physical layer of the UE.

The requirements shall apply for all TDD special subframe configurations specified in 3GPP TS 36.211 [26] and for the TDD uplink-downlink configurations as specified in Table 9.1.2.3-2.

Table 9.1.2.3-2: TDD uplink-downlink subframe configurations applicable for TDD intra-frequency requirements

PRS Transmission Bandwidth [RB]

Applicable TDD uplink-downlink configurations

6, 15

1, 2, 3, 4 and 5

25, 50, 75, 100

0, 1, 2, 3, 4, 5 and 6

Note: Uplink-downlink configurations are specified in Table 4.2-2 in 3GPP TS 36.211 [26].

This requirement assumes that the measurement report is not delayed by other LPP signalling on the DCCH. This measurement reporting delay excludes a delay uncertainty resulted when inserting the measurement report to the TTI of the uplink DCCH. The delay uncertainty is: 2 x TTIDCCH. This measurement reporting delay excludes any delay caused by no UL resources for UE to send the measurement report.

The normative reference for this requirement is TS 36.133 [23] clause 8.1.2.5.2 and A.8.12.2.

9.1.2.4 Test description
9.1.2.4.1 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 4.3.1.2.

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

1. Connect the SS, faders and AWGN noise sources to the UE antenna connector or antenna connectors as shown in Annex A, Figure A.4.

2. The general test parameter settings are set up according to Table 9.1.2.4.1-1.

3. Propagation conditions are set according to clause 4.7.2.1.

4. Message contents are defined in clause 9.1.2.4.3.

5. In the test there are three synchronized cells: Cell 1, Cell 2 and Cell 3. Cell 1 is the OTDOA assistance data reference as well as the serving cell. 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. The assistance data neighbour cell list includes in total 15 cells, where 13 of the cells are not simulated (dummy cells; as defined in 3GPP TS 37.571‑5 clause 7.2.2).

6. The true RSTD (which is the receive time difference for frame 0 between two cells as seen at the UE antenna connector) is set to 31 Ts (about 1 s) between neighbour Cell 2 and serving Cell 1; and set to -31 Ts (about -1 s) between neighbour Cell 3 and serving Cell 1.

Table 9.1.2.4-1: General test parameters for E-UTRAN TDD intra-frequency RSTD measurement reporting delay under fading propagation conditions

Parameter

Unit

Value

Comment

Reference cell

Cell 1

Reference is the cell in the OTDOA assistance data with respect to which the RSTD measurement is defined, as specified in 3GPP TS 36.214 [6] and 3GPP TS 36.355 [4]. The reference cell is the serving cell in this test case.

Neighbour cells

Cell 2 and Cell 3

Cell 2 and Cell 3 appear at random places in the neighbour cell list in the OTDOA assistance data, but Cell 2 always appears in the first half of the list, whilst Cell 3 appears in the second half of the list.

PCFICH/PDCCH/PHICH parameters

DL Reference Measurement Channel R.6 TDD

As specified in TS 36.521-3 [25] clause A.2.2

Channel Bandwidth (BWchannel)

MHz

10

PRS Transmission Bandwidth Note 2

RB

50

PRS are transmitted over the system bandwidth

PRS configuration index Note 2

174

This corresponds to periodicity of 320 ms and PRS subframe offset of DL subframes, as defined in 3GPP TS 36.211 [26], Table 6.10.4.3-1

Number of consecutive downlink positioning subframes Note 2

1

As defined in 3GPP TS 36.211 [26]. The number of subframes in a positioning occasion

Physical cell ID PCI Note 2

(PCI of Cell 1 – PCI of Cell 2)mod6=0

and

(PCI of Cell 1 – PCI of Cell 3)mod6=0

The cell PCIs are selected such that the relative shifts of PRS patterns among cells are as given by the test parameters

TDD uplink-downlink configuration

1

As specified in TS 36.211 [26], Section 4.2; corresponds to a configuration with 5 ms switch-point periodicity and two downlink consecutive subframes

TDD special subframe configuration

6

As specified in TS 36.211 [26], Section 4.2; corresponds to DwPTS of and UpPTS of

CP length Note 2

Normal

The same CP length applies for DL and UL

DRX

ON

DRX parameters are further specified in Table 9.1.2.4-2

Radio frame receive time offset between the cells at the UE antenna connectorNote 3

s

Cell 2 to Cell 1: 1

Cell 3 to Cell 1: -1

PRS are transmitted from synchronous cells

Expected RSTD Note 1

s

Cell 2: 3

Cell 3: 3

Other neighbour cells: randomly between -3 and 3

The expected RSTD is what is expected at the receiver. The corresponding parameter in the OTDOA assistance data specified in TS 36.355 [4] is the expectedRSTD indicator

Expected RSTD uncertainty for all neighbour cells Note 1

s

5

The corresponding parameter in the OTDOA assistance data specified in TS 36.355 [4] is the expectedRSTD-Uncertainty index

Number of cells provided in OTDOA assistance data

16

Including the reference cell

PRS muting info Note 2

Cell 1: ‘11110000’

Cell 2: ‘00001111’

Cell 3: ‘11110000’

Corresponds to prs-MutingInfo defined in TS 36.355 [4]

T1

s

3

The length of the time interval from the beginning of each test

T2

s

1.28

The length of the time interval that follows immediately after time interval T1

T3

s

1.28

The length of the time interval that follows immediately after time interval T2

Note 1: Parameters “Expected RSTD” and “Expected RSTD uncertainty for all neighbour cells” are not settable parameters. These are parameters signalled in LPP only. For the values to be used in LPP see Table 9.1.2.4.3-5 and TS 37.571-5 [20], clause 7.2.2.

Note 2: Parameters “PRS Transmission Bandwidth”, “PRS configuration index”, “Number of consecutive downlink positioning subframes”, “Physical cell ID PCI”, “CP length”, and “PRS muting info” are settable parameters and also parameters signalled in LPP. The values to be used for “Physical cell ID PCI” are as follows: Cell 1: 0, Cell 2: 6, Cell 3: 12. For all the values to be used in LPP see Table 9.1.2.4.3-5 and TS 37.571-5 [20], clause 7.2.2.

Note 3: The parameter “Radio frame receive time offset between the cells at the UE antenna connector” is not a settable parameter but is used to set the “true RSTD” values in step 6 of clause 9.1.2.4.1.

Table 9.1.2.4-2: DRX parameters for E-UTRAN TDD intra-frequency RSTD measurement reporting delay under fading propagation conditions

Field

Value

Comment

onDurationTimer

psf1

As specified in 3GPP TS 36.331 [22], clause 6.3.2.

drx-InactivityTimer

psf1

drx-RetransmissionTimer

sf1

longDRX-CycleStartOffset

sf320

shortDRX

disable

9.1.2.4.2 Test procedure

The test consists of three consecutive time intervals, with duration of T1, T2 and T3 defined in Table 9.1.2.4-1. Cell 1 is active in T1, T2 and T3, whilst Cell 2 and Cell 3 are activated only in the beginning of T2. Cell 2 is active until the end of T3, and Cell 3 is active until the end of T2. The beginning of the time interval T2 shall be aligned 5 ms before the first PRS positioning subframe of a positioning occasion in the reference cell, where 5 ms is the necessary test tolerance. Cell 1 transmits PRS in T2, while Cell 2 transmits PRS only in T3, and Cell 3 transmits PRS only in T2.

NOTE: The information on when PRS is muted is conveyed to the UE using PRS muting information in the OTDOA assistance data.

The OTDOA-RequestLocationInformation message and the OTDOA assistance data as defined in clause 9.1.2.4.3 shall be provided to the UE during T1. The last TTI containing the OTDOA-RequestLocationInformation message shall be provided to the UE T ms before the start of T2, where T = 150 ms is the maximum processing time of the OTDOA-RequestLocationInformation message and the OTDOA assistance data.

1. Ensure that the UE is in state Generic RB Established State 3A-RF according to 3GPP TS 36.508 [18] clause 7.2A.3.

2. The SS shall send a RESET UE POSITIONING STORED INFORMATION message.

3. Set the parameters according to Table 9.1.2.5-1. Propagation conditions are set according to clause 4.7.2.2 (ETU30).

4. T1 starts.

5. The SS shall transmit an RRCConnectionReconfiguration message with the DRX configuration. PDCCHs indicating new transmissions shall be sent continuously until the start of T2 to ensure that the UE would not enter the DRX state before T2.

6. The UE shall transmit RRCConnectionReconfigurationComplete message.

6a. The SS shall transmit an LPP REQUEST CAPABILITIES message.

6b. The UE shall transmit an LPP PROVIDE CAPABILITIES message indicating the OTDOA capabilities supported by the UE in the OTDOA-ProvideCapabilities IE.

7. The SS shall send a LPP PROVIDE ASSISTANCE DATA message, including the OTDOA‑ProvideAssistanceData IE. The position of neighbour Cell 2 in the OTDOA-NeighbourCellInfoList is randomly selected to be in the first 7 elements of the sequence, and the position of neighbour Cell 3 is randomly selected to be in the last 8 elements of the sequence, as described in 3GPP TS 37.571-5 [20], clause 7.2.3. If the UE message at step 6b includes the ackRequested IE set to TRUE, then the SS shall send an acknowledgment in the LPP PROVIDE ASSISTANCE DATA message.

8. The SS shall send a LPP REQUEST LOCATION INFORMATION message, including the OTDOA‑RequestLocationInformation IE such that the UE receives the message T ms before the start of T2, where T = 150 ms.

9. When T1 expires, the SS shall switch the power setting from T1 to T2 as specified in Table 9.1.2.5-3.

10. When T2 expires, the SS shall switch the power setting from T2 to T3 as specified in Table 9.1.2.5-3.

11. The UE shall transmit a LPP PROVIDE LOCATION INFORMATION including the OTDOA‑ProvideLocationInformation IE within the response time (see clause 4.7.3) specified in clause 9.1.1.5. The UE shall perform and report the RSTD measurements for both Cell 2 and Cell 3 with respect to the reference cell in the OTDOA assistance data, Cell 1. If the UE transmits an OTDOA‑ProvideLocationInformation IE including the rstd field for both Cell 2 and Cell 3 within the response time then the number of successful tests is increased by one. If the UE fails to report the OTDOA‑ProvideLocationInformation IE with both the rstd fields included within the response time then the number of failure tests is increased by one.

12. If the UE message at step 11 includes the ackRequested IE set to TRUE, the SS shall send a LPP acknowledgement message.

13. Repeat steps 2-12 until the confidence level according to Annex D is achieved. For each iteration, at step 9 change the random position of the Cells 2 and 3 in the OTDOA-NeighbourCellInfoList.

9.1.2.4.3 Message contents

Table 9.1.2.4.3-1: RESET UE POSITIONING STORED INFORMATION

Derivation Path: 36.509 [11] clause 6.9

Information Element

Value/remark

Comment

Condition

UE Positioning Technology

0 0 0 0 0 0 0 1

OTDOA

Table 9.1.2.4.3-2: MAC-MainConfig-RBC: TDD RSTD Measurement Reporting Delay

Derivation Path: TS 36.508 [18] clause 4.8.2.1.5, Table 4.8.2.1.5-1 MAC-MainConfig-RBC

Information Element

Value/remark

Comment

Condition

MAC-MainConfig-RBC ::= SEQUENCE {

drx-Config CHOICE {

setup SEQUENCE {

onDurationTimer

psf1

drx-InactivityTimer

psf1

drx-RetransmissionTimer

sf1

longDRX-CycleStartOffset CHOICE {

sf320

0

}

shortDRX

Not present

}

}

Table 9.1.2.4.3-2a: LPP Request Capabilities

Information Element

Value/remark

otdoa‑RequestCapabilities

TRUE

Table 9.1.2.4.3-3: LPP RequestLocationInformation

Derivation Path: 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

3

See clause 9.1.2.5

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
SEQUENCE {

assistanceAvailability

FALSE

}

ecid-RequestLocationInformation

Not present

epdu-RequestLocationInformation

Not Present

}

}

}

}

}

}

}

Table 9.1.2.4.3-4: Void

Table 9.1.2.4.3-5: LPP ProvideAssistanceData

Derivation Path: 36.355 clause 6.2

Information Element

Value/remark

Comment

Condition

LPP-Message ::= SEQUENCE {

transactionID SEQUENCE {

Initiator

locationServer

transactionNumber

(0..255)

}

endTransaction

TRUE

sequenceNumber

Not present

acknowledgement

Not present

lpp-MessageBody CHOICE {

c1 CHOICE {

provideAssistanceData SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

provideAssistanceData-r9 SEQUENCE {

commonIEsProvideAssistanceData

Not present

a-gnss-ProvideAssistanceData

Not present

otdoa-ProvideAssistanceData SEQUENCE {

otdoa-ReferenceCellInfo

As defined in TS 37.571‑5 [20], clause 7.2.2.

otdoa-NeighbourCellInfo

As defined in TS 37.571‑5 [20], clause 7.2.2.

otdoa-Error

Not present

}

epdu-ProvideAssistanceData

Not present

}

}

}

}

}

}

Table 9.1.2.4.3-6: LPP ProvideLocation Information

Derivation Path: 36.355 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
SEQUENCE {

otdoaSignalMeasurementInformation
SEQUENCE {

systemFrameNumber

physCellIdRef

Cell 1

cellGlobalIdRef

earfcnRef

referenceQuality

neighbourMeasurementList

SEQUENCE (SIZE(n)) {

physCellIdNeighbor

Cell 2

cellGlobalIdNeighbour

earfcnNeighbour

rstd

Present

rstd-Quality

}

neighbourMeasurementList

SEQUENCE (SIZE(n)) {

physCellIdNeighbor

Cell 3

cellGlobalIdNeighbour

earfcnNeighbour

rstd

Present

rstd-Quality

}

}

otdoa-Error

May be present with error reason ‘undefined’ or ‘attemptedButUnableToMeasureSomeNeighbourCells’

}

ecid-ProvideLocationInformation

Not present

epdu-ProvideLocationInformation

Not present

}

}

}

}

}

}

9.1.2.5 Test requirement

Table 9.1.2.5-1 and 9.1.2.5-2 define the primary level settings including test tolerances for the test.

Table 9.1.2.5-1: Cell-specific test parameters for E-UTRAN TDD intra-frequency RSTD measurement reporting delay under fading propagation conditions during T1

Parameter

Unit

Cell 1

Cell 2

Cell 3

E-UTRA RF Channel Number

1

1

1

Correlation Matrix and Antenna Configuration

1×2 Low

1×2 Low

1×2 Low

OCNG patterns defined in TS 36.521-3 [25] clause D.2

OP.1 TDD

N/A

N/A

PBCH_RA

dB

0

N/A

N/A

PBCH_RB

PSS_RA

SSS_RA

PCFICH_RB

PHICH_RA

PHICH_RB

PDCCH_RA

PDCCH_RB

OCNG_RA Note 1

OCNG_RB Note 1

Note 3

dBm/

15 kHz

-95

PRS

dB

-Infinity

-Infinity

-Infinity

Io Note 4

dBm/

9 MHz

-67.22

N/A

N/A

dB

0

-Infinity

-Infinity

Propagation Condition

ETU30

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

Note 2: The resources for uplink transmission are assigned to the UE prior to the start of time period T2.

Note 3: Interference from other cells and noise sources not specified in the test are assumed to be constant over subcarriers and time and shall be modelled as AWGN of appropriate power for to be fulfilled.

Note 4: Io levels have been derived from other parameters and are given for information purpose. These are not settable test parameters.

Table 9.1.2.5-2: Cell-specific test parameters for E-UTRAN TDD intra-frequency RSTD measurement reporting delay under fading propagation conditions

Parameter

Unit

Cell 1

Cell 2

Cell 3

T2

T3

T2

T3

T2

T3

E-UTRA RF Channel Number

1

1

1

Correlation Matrix and Antenna Configuration

1×2 Low

1×2 Low

1×2 Low

OCNG patterns defined in TS 36.521-3 [25] clause D.2

OP.1 TDD

OP.2 TDD

OP.2 TDD

N/A

PBCH_RA

dB

0

0

0

N/A

PBCH_RB

PSS_RA

SSS_RA

PCFICH_RB

PHICH_RA

PHICH_RB

PDCCH_RA

PDCCH_RB

OCNG_RA Note 1

OCNG_RB Note 1

PRS_RA

dB

-3

N/A

N/A

3

3

N/A

Note 3

dBm/

15 kHz

-98

-95

-98

-95

-98

-95

PRS

dB

-1

-Infinity

-Infinity

-7

-7

-Infinity

PRS Note 4

dB

-1.79

-Infinity

-Infinity

-7

-9.54

-Infinity

Io Note 4

dBm/

9 MHz

-69.55

-67.08

-69.55

-67.08

-69.55

N/A

PRP Note 4

dBm/

15 kHz

-99

-Infinity

-Infinity

-102

-105

-Infinity

RSRP Note 4

dBm/

15 kHz

-96

-93

-105

-105

-108

-Infinity

Note 4

dB

2

2

-7

-10

-10

-Infinity

Propagation Condition

ETU30

Note 1: OCNG shall be used such that active cells (all, except Cell 3 in T3) are fully allocated and a constant total transmitted power spectral density is achieved for all OFDM symbols other than those in the subframes with transmitted PRS.

Note 2: The resources for uplink transmission are assigned to the UE prior to the start of time period T2.

Note 3: Interference from other cells and noise sources not specified in the test are assumed to be constant over subcarriers and time and shall be modelled as AWGN of appropriate power for to be fulfilled.

Note 4: If PRS_RA is not “N/A”,, PRS , Io, RSRP and PRP levels have been derived from other parameters and are given for information purpose. If PRS_RA is “N/A”, Io and RSRP levels have been derived from other parameters and are given for information purpose. These are not settable test parameters. Interference conditions shall be applied to all PRS symbols of DL positioning subframes.

The response time including test tolerance is 3.3 s. The response time is equal to the LPP time IE value plus the test tolerance. The LPP time IE value is derived from the RSTD reporting delay plus T, where T = 150 ms, giving a value of 2710 ms. This is rounded up to the next allowed LPP value of 3 seconds. The RSTD measurement reporting delay in the test is derived from the following expression, , where =8 and =16 are the parameters specified in clause 9.1.2.3 and Table 9.1.2.3‑1. This gives the total RSTD reporting delay of 2560 ms for the 15 neighbour cells including Cell 2 and Cell 3 with respect to the reference cell, Cell 1.

The test tolerances are defined in clauses C.1.3 and C4.

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