9.4.10 FDD inter-frequency RSTD Measurement Accuracy in CE Mode B

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

9.4.10.1 FDD inter-frequency RSTD Measurement Accuracy in CE Mode B for Category M1

Editor’s note: This test is incomplete. The following aspects are missing:

The core requirements in TS 36.133 contain square brackets

9.4.10.1.1 Test purpose

To verify that the RSTD measurement accuracy for UE Category M1 is within the specified limits in enhanced coverage mode in an environment with fading propagation conditions.

9.4.10.1.2 Test applicability

This test applies to E-UTRA FDD UE Category M1 release 14 and forward that supports UE-assisted OTDOA, inter-frequency RSTD measurements and CE Mode B.

9.4.10.1.3 Minimum conformance requirements

The accuracy requirements in Table 9.4.10.1.3-1 are valid under the following conditions:

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

PRP 1,2|dBm according to Annex E.3.1 for a corresponding Band

There are no measurement gaps overlapping with the PRS subframes of the measured serving cell.

The parameter expectedRSTDUncertainty signalled over LPP by E-SMLC as defined in TS 36.355 [4] is less than 5 µs.

Table 9.4.10.1.3-1: RSTD inter-frequency measurement accuracy for CEModeB

Accuracy

Conditions

PRS Ês/Iot

Minimum PRS

bandwidth, which is minimum of serving cell channel bandwidth and the PRS bandwidths of the reference cell and the measured neighbour cell i Note 3

Minimum number of available measurement subframes among the reference cell and the measured neighbour cell i

The number of consecutive downlink subframes NPRS among the reference cell and the measured neighbour cell i as defined in [24]

Io Note 4 range

E-UTRA operating band groups Note 5

Minimum
Io Note 1

Maximum
Io

Ts Note 2

dB

RB

dBm/15kHz

dBm/BWChannel

[±21]

(PRS Ês/Iot)ref ≥-15dB

and

(PRS Ês/Iot)i ≥-15dB

≥ 6

≥ 30

≥ 4

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

NOTE 1: This minimum 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: PRS bandwidth is as indicated in prs-Bandwidth in the OTDOA assistance data defined in TS 36.355 [4].

NOTE 4: The Io is defined in PRS positioning subframes. The same Io range applies to PRS and non-PRS symbols. Io levels are different in PRS and non-PRS symbols within the same subframe.

NOTE 5: E-UTRA operating band groups are as defined in Section 4.4.2.

The normative reference for this requirement is TS 36.133 [23] clause 9.1.21.18 and A.9.8.29.

9.4.10.1.4 Test description

9.4.10.1.4.1 Initial conditions

Same as in clause 9.4.7.1.4.1 but replacing Table 9.4.7.1.4.1-1 with Table 9.4.10.1.4.1-1.

Table 9.4.10.1.4.1-1: General test parameters for E-UTRAN FDD inter-frequency RSTD measurement Accuracy under fading propagation conditions.

Parameter

Unit

Value

Comment

Test 1

MPDCCH

R.18 FDD

As specified in TS 36.521-3 [25] clause A.7.1

mPDCCH-startSF-UESS

10

Parameter G in which determines subframe k0 in which MPDCCH starts

Reference cell

Cell 1

Reference cell 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 cell

Cell 2

One carrier frequency is used.

E-UTRA RF Channel Number

1

Channel Bandwidth (BWchannel)

MHz

10

PRS Transmission Bandwidth Note 2

RB

50 Note 4

PRS are transmitted over the system bandwidth

Number of consecutive downlink positioning subframes Note 2

4

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

PRS muting info Note 2

Cell 1: ‘11110000’

Cell 2: ‘11110000’

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

Physical cell ID PCI Note 2

(Cell ID of cell 1 – Cell ID of cell 2) mod 6 = 0

prs-SubframeOffset

10

Number of subframes rounded to the closest integer. The corresponding parameter in the OTDOA assistance data is prs-SubframeOffset specified in TS 36.355 [4]

slotNumberOffset

0

The slot number offset at the transmitter between a neighbour cell and the assistance data reference cell specified in TS 36.355 [4]

Expected RSTD Note 1

μs

Cell 2: 1

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

μs

5

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

CP length Note 2

Normal

DRX

OFF

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

μs

Cell 2 to Cell 1: -3

PRS are transmitted from synchronous cells

Number of cells provided in OTDOA assistance data

16

Including the reference cell

ms

40960

Derived according to the RSTD measurement requirements specified in section 9.4.10.1.3

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 9.4.10.1.4.3-5 and TS 37.571-5 [20], clause 7.2.5.

Note 2: Parameters “PRS Transmission Bandwidth”, “PRS configuration index”, “Number of consecutive positioning downlink subframes”, “prs-MutingInfo”, “Cell ID” and “CP length” are settable parameters and also parameters signalled in LPP. The values to be used for “Cell ID” are as follows: Cell 1: 0, Cell 2: Test 1: 6, Test 2: 7, Test 3: 6, Test 4: 9. For all the values to be used in LPP see Table 9.4.10.1.4.3-4 and TS 37.571-5 [20], clause 7.2.5.

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 9.4.10.1.4.1.

Note 4: If the PRS transmission bandwidth is larger than the UE RF bandwidth, the UE is measuring RSTD within its RF bandwidth.

Note 5: The parameter “” is not a settable parameter but is used to set the LPP “time” value in Table 9.4.10.1.4.3-3. The value of the LPP time IE is set to + T ms, where T = 150 ms, giving a value of 41210 ms. This is rounded up to the next allowed LPP value of 42 seconds.

9.4.10.1.4.2 Test procedure

Same as in clause 9.4.7.1.4.2 but using condition CEModeB.

9.4.10.1.4.3 Message contents

Same as in clause 9.4.7.1.4.3 with the following exceptions

Table 9.4.10.1.4.3-1: LPP RequestLocationInformation

Derivation Path: Table 9.4.7.1.4.3-4

Information Element

Value/remark

Comment

Condition

LPP-Message ::= SEQUENCE {

lpp-MessageBody CHOICE {

c1 CHOICE {

requestLocationInformation SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

requestLocationInformation-r9 SEQUENCE {

commonIEsRequestLocationInformation

SEQUENCE {

qos SEQUENCE {

responseTime SEQUENCE {

time

42

See Note 5 in Table 9.4.10.1.4.1-1

}

}

}

}

}

}

}

}

}

}

9.4.10.1.5 Test requirement

Table 9.4.10.1.5-1 defines the primary level settings including test tolerances for the test.

The RSTD FDD inter-frequency accuracy test shall meet the reported values in Table 9.4.10.1.5-2

Table 9.4.10.1.5-1: Cell Specific Test Parameters for inter frequency RSTD Tests for E-UTRAN FDD

Parameter

Unit

Test1

Test2 Note4

Cell1

Cell2

Cell1

Cell2

E-UTRA RF Channel Number

1

2

1

2

Gap offset

9

N/A

9

N/A

Gap pattern

#0

N/A

#0

N/A

OCNG Patterns defined in TS 36.521-3 [25] clause D.1

OP.21 FDD

OP.6 FDD

OP.21 FDD

OP.6 FDD

PRS configuration Index , as defined in TS 36.211 [26]

142

152

142

152

PBCH_RA

dB

0

0

0

0

PBCH_RB

PSS_RA

SSS_RA

MPDCCH_RA

MPDCCH_RB

OCNG_RANote1

OCNG_RBNote1

PRS_RA

dB

0

0

0

0

Note2

dBm/15 kHz

-98

-98

-98

-98

PRS

dB

-11

-14

-11

-14

PRS Note3

dB

-11

-14

-11

-14

Io Note3

dBm/9 MHz

-70.16

-70.19

-70.16

-70.19

PRP Note3

dBm/15kHz

-109

-112

-109

-112

Note 3

dB

-11

-14

-11

-14

RSRP Note 3

dBm/15kHz

-109

-112

-109

-112

Propagation condition

AWGN

Note 1: 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 (other than those in the PRS subframes).

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: , PRS , Io, RSRP and PRP levels have been derived from other parameters for information purposes. They are not settable parameters themselves. Io values are derived in the case that there is no PBCH, PSS or SSS in the OFDM symbols carrying PRS

Note 4: Test2 is not used for test 9.4.10.1

Table 9.4.10.1.5-2: RSTD FDD inter-frequency accuracy requirements for the reported values

Test 1

Lowest reported value

[RSTD_6241]

Highest reported value

[RSTD_6287]

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

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

9.4.10.2 FDD inter-frequency RSTD Measurement Accuracy in CE Mode B for Category M2

9.4.10.2.1 Test purpose

To verify that the RSTD measurement accuracy for UE Category M2 is within the specified limits in enhanced coverage mode in an environment with fading propagation conditions.

9.4.10.2.2 Test applicability

This test applies to E-UTRA FDD UE Category M2 release 14 and forward that supports UE-assisted OTDOA, inter-frequency RSTD measurements and CE Mode B.

9.4.10.2.3 Minimum conformance requirements

The accuracy requirements in Table 9.4.10.2.3-1 are valid under the following conditions:

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

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

There are no measurement gaps overlapping with the PRS subframes of the measured serving cell.

The parameter expectedRSTDUncertainty signalled over LPP by E-SMLC as defined in TS 36.355 [4] is less than 5 µs.

Table 9.4.10.2.3-1: RSTD inter-frequency measurement accuracy for CEModeB

Accuracy

Conditions

PRS Ês/Iot

Minimum PRS

bandwidth, which is minimum of serving cell channel bandwidth and the PRS bandwidths of the reference cell and the measured neighbour cell i Note 3

Minimum number of available measurement subframes among the reference cell and the measured neighbour cell i

The number of consecutive downlink subframes NPRS among the reference cell and the measured neighbour cell i as defined in [24]

Io Note 4 range

E-UTRA operating band groups Note 5

Minimum
Io Note 1

Maximum
Io

Ts Note 2

dB

RB

dBm/15kHz

dBm/BWChannel

±21

(PRS Ês/Iot)ref ≥-15dB

and

(PRS Ês/Iot)i ≥-[13]dB

≥ 6

≥ 30

≥ 4

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

(PRS Ês/Iot)ref ≥-15dB

and

(PRS Ês/Iot)i ≥-[13]dB

≥ 24

≥ 8

≥ 2

Note 6

Note 6

Note 6

NOTE 1: This minimum 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: PRS bandwidth is as indicated in prs-Bandwidth in the OTDOA assistance data defined in TS 36.355 [4].

NOTE 4: The Io is defined in PRS positioning subframes. The same Io range applies to PRS and non-PRS symbols. Io levels are different in PRS and non-PRS symbols within the same subframe.

NOTE 5: E-UTRA operating band groups are as defined in Section 4.4.2.

NOTE 6: FFS?

NOTE 7: The same bands and the same Io conditions for each band apply for this requirement as for the corresponding requirement with the PRS bandwidth ≥ 6 RB.

Editor’s note: The values of (PRS Ês/Iot)i: in the above table are inconsistent with other similar values and are therefore placed in square brackets pending further review.

The normative reference for this requirement is TS 36.133 [23] clause 9.1.25.2 and A.9.8.29.

9.4.10.2.4 Test description

9.4.10.2.4.1 Initial conditions

Same as in clause 9.4.10.1.4.1 adding Test 2 and replacing Table 9.4.10.1.4.1-1 with Table 9.4.10.2.4.1-1.

The true RSTD (which is the receive time difference for frame 0 between cell 2 and cell 1 as seen at the UE antenna connector) is set to the following values:
Test 1: -92 Ts (about -3 s)
Test 2: 92 Ts (about 3 s))
Note that the related expectedRSTD values to be signalled over LPP are defined in Table 9.4.10.2.4-1 for each test.

Table 9.4.10.2.4.1-1: General test parameters for E-UTRAN FDD inter-frequency RSTD measurement Accuracy under fading propagation conditions

Parameter

Unit

Value

Comment

Test1

Test2

M-PDCCH parameters

R.18 FDD

R.18 FDD

As specified in TS 36.521-3 [25] clause A.7.1.

mPDCCH-startSF-UESS

10

10

Parameter G in which determines subframe k0 in which MPDCCH starts

Reference cell

Cell 1

Neighbour cell

Cell 2

E-UTRA RF Channel Number

1

One carrier frequency is used.

System channel Bandwidth (BWchannel)

MHz

10

10

PRS Transmission Bandwidth Note 2

RB

50 Note 4

50 Note 4

PRS bandwidth is as indicated in prs-Bandwidth in the OTDOA assistance data defined in TS 36.355 [4].

Number of consecutive positioning downlink subframes Note 2

4

2

As defined in TS 36.211 [26]

prs-MutingInfo Note 2

Cell 1: ‘11110000’

Cell 2: ‘11110000’

See section 6.5.1.2 in 3GPP TS 36.355 [4] for more information

Cell ID Note 2

(Cell ID of cell 1 – Cell ID of cell 2) mod 6 = 0

(Cell ID of cell 1 – Cell ID of cell 2) mod 6 = 0

prs-SubframeOffset

10

10

Number of subframes rounded to the closest integer. The corresponding parameter in the OTDOA assistance data is prs-SubframeOffset specified in TS 36.355 [4]

slotNumberOffset

0

0

The slot number offset at the transmitter between a neighbour cell and the assistance data reference cell specified in TS 36.355 [4]

Expected RSTD Note 1

μs

Cell 2: 1

Other neighbour cells: randomly between -3 and 3

Cell 2: -1

Other neighbour cells: randomly between -3 and 3

Expected RSTD uncertainty for all neighbour cells Note 1

μs

5

5

CP length Note 2

Normal

DRX

OFF

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

μs

Cell 2 to Cell 1: -3

Cell 2 to Cell 1: 3

PRS are transmitted from synchronous cells

Number of cells provided in OTDOA assistance data

16

The number of cells includes the reference cell

Note 5

ms

40960

10240

Derived according to the RSTD measurement requirements specified in section 9.4.10.2.3

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 9.4.10.1.4.3-4 and TS 37.571-5 [20], clause 7.2.5.

NOTE 2: Parameters “PRS Transmission Bandwidth”, “PRS configuration index”, “Number of consecutive positioning downlink subframes”, “prs-MutingInfo”, “Cell ID” and “CP length” are settable parameters and also parameters signalled in LPP. The values to be used for “Cell ID” are as follows: Cell 1: 0, Cell 2: Test 1: 6, Test 2: 7, Test 3: 6, Test 4: 9. For all the values to be used in LPP see Table 9.4.10.1.4.3-4 and TS 37.571-5 [20], clause 7.2.5.

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 9.1.3.4.1.

NOTE 4: If the PRS transmission bandwidth is larger than the UE RF bandwidth, the UE is measuring RSTD within its RF bandwidth.

NOTE 5: The parameter “” is not a settable parameter but is used to set the LPP “time” value in Table 9.4.10.2.4.3-1. The value of the LPP time IE is set to + T ms, where T = 150 ms, giving a value of 41210 ms for Test and 10390 ms for Test 2. This is rounded up to the next allowed LPP value of 42 and 11 seconds, respectively.

9.4.10.2.4.2 Test procedure

Same as in clause 9.4.7.1.4.2 but using condition CEModeB.

9.4.10.2.4.3 Message contents

Same as in clause 9.4.7.1.4.3 with the following exceptions:

Table 9.4.10.2.4.3-1: LPP RequestLocationInformation

Derivation Path: Table 9.4.7.1.4.3-4

Information Element

Value/remark

Comment

Condition

LPP-Message ::= SEQUENCE {

lpp-MessageBody CHOICE {

c1 CHOICE {

requestLocationInformation SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

requestLocationInformation-r9 SEQUENCE {

commonIEsRequestLocationInformation

SEQUENCE {

qos SEQUENCE {

responseTime SEQUENCE {

time

42

See Note 5 in Table 9.4.10.2.4.1-1

Test 1

time

11

See Note 5 in Table 9.4.10.2.4.1-1

Test 2

}

}

}

}

}

}

}

}

}

}

9.4.10.2.5 Test requirement

Same as in clause 9.4.10.1.5 adding Test 2 and replacing Table 9.4.10.1.5-2 with Table 9.4.10.2.5-1:

Table 9.4.10.2.5-1: RSTD FDD inter-frequency accuracy requirements for the reported values

Test 1

Test 2

Lowest reported value

RSTD_6252

RSTD_6435

Highest reported value

RSTD_6276

RSTD_6459

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