Title: Test Tolerance analysis for TS 34.122 Test cases 8.7.16 and 8.7.17

Source: CATT

1 Introduction

The test cases in sections 8.7.16 and 8.7.17 of 34.122, E-UTRAN FDD RSRQ and E-UTRA TDD RSRQ, have not been completed. The measurement uncertainty and test tolerance are missed. The document describes the process to derive the Test Tolerances. The calculations are provided in the accompanying spreadsheet.

2 Test case in TS 34.122

The test conditions are defined in TC 8.7.16 and TC 8.7.17 in TS 34.122. However, as the current version 11.1.0 does not align with recent changes to TS 25.123, the extracts for the test case are taken from Annex A of TS 25.123 v10.6.0. For relevant core requirements, TS 25.123 clause 9.1.1.5b on RSRQ refers to 36.133, inter-frequency, so the extracts for the E-UTRA core requirements are taken from TS 36.133 v10.6.0.

Core requirements from TS 36.133:

9.1.6.1 Absolute RSRQ Accuracy

The requirements for absolute accuracy of RSRQ in this section apply to a cell that has different carrier frequency from the serving cell.

The accuracy requirements in Table 9.1.6.1-1 are valid under the following conditions:

Cell specific reference signals are transmitted either from one, two or four antenna ports.

Conditions defined in 36.101 Section 7.3 for reference sensitivity are fulfilled.

RSRP|dBm according to Annex B.3.3 for a corresponding Band

Table 9.1.6.1-1: RSRQ Inter frequency absolute accuracy

Parameter	Unit	Accuracy [dB]		Conditions1
		Normal condition	Extreme condition	Bands 1, 4, 6, 10, 11, 18, 19, 21, 23, 24, 33, 34, 35, 36, 37, 38, 39, 40	Bands 2, 5, 7, 41	Band 25	Bands 3, 8, 12, 13, 14, 17, 20, 22	Bands 9, 42, 43
				Io	Io	Io	Io	Io
RSRQ when RSRP Ês/Iot > -3 dB	dBm	2.5	4	-121dBm/15kHz … -50dBm/ BWChannel	-119dBm/15kHz … -50dBm/ BWChannel	-117.5dBm/15kHz … -50dBm/ BWChannel	-118dBm/15kHz … -50dBm/ BWChannel	-120dBm/15kHz … -50dBm/ BWChannel
RSRQ when RSRP Ês/Iot ≥ -6 dB	dBm	3.5	4	-121dBm/15kHz … -50dBm/ BWChannel	-119dBm/15kHz … -50dBm/ BWChannel	-117.5dBm/15kHz … -50dBm/ BWChannel	-118dBm/15kHz … -50dBm/ BWChannel	-120dBm/15kHz … -50dBm/ BWChannel
Note 1: Io is assumed to have constant EPRE across the bandwidth.

Test case from section A.9.2.5b.1 of TS25.123

A.9.2.5b.1 E-UTRAN FDD RSRQ

A.9.2.5b.1.1 Test Purpose and Environment

The purpose of this test is to verify that the E-UTRA FDD RSRQ measurement absolute accuracy is within the specified limits. This test will verify the requirements in section 9.1.1.5b and applies to UE supporting this capability.

Cell 1 is a UTRA TDD cell and cell 2 is a E-UTRA FDD cell. In all tests, Cell 1 is the serving cell and Cell 2 the target cell. In the measurement control information it is indicated to the UE that periodic reporting of the E-UTRA RSRQ measurement is used.

Idle interval of 80ms period as defined in TS25.331 is provided.

A.9.2.5b.1.2 Test parameters

E-UTRA FDD RSRQ accuracy requirements are tested by using test parameters in Table A.9.2.5b.1-1, A.9.2.5b.1-2, and A.9.2.5b.1-3.

Table A.9.2.5b.1-1: General E-UTRA RSRQ test parameters

Parameter	Unit	Value	Comment
DCH parameters		DL Reference Measurement Channel 12.2 kbps	As specified in TS 25.102 section A.2.2
Power Control		On
Target quality value on DTCH	BLER	0.01
Active cell		Cell 1	1.28Mcps TDD cell
Neighbour cell		Cell 2	E-UTRA FDD cell
CP length of cell 2		normal
Idle intervals period	ms	80	As specified in TS 25.331
Filter coefficient		0	L3 filtering is not used
Inter-RAT(E-UTRA FDD) measurement quantity		E-UTRA FDD RSRQ

Table A.9.2.5b.1-2: Cell specific test parameters for E-UTRA RSRQ test parameters (cell 1)

Parameter		Unit		Test 1, Test 2
DL timeslot number			0		DwPTS
UTRA RF Channel number (NOTE)			Channel 1
PCCPCH_Ec/Ior	dB		-3
DwPCH_Ec/Ior	dB				0
OCNS_Ec/Ior	dB		-3
Îor/Ioc	dB		3
Ioc	dBm / 1.28MHz		-75
Propagation condition			AWGN
NOTE: In the case of multi-frequency, the UTRA RF Channel Number can be set for the primary frequency in this test.

Table A.9.2.5b.1-3: Cell specific test parameters for E-UTRA RSRQ test parameters (cell 2)

Parameter		Unit	Test 1	Test 2	Test 3
E-UTRA RF Channel Number			1	1	1
Bwchannel		MHz	10	10	10
Measurement bandwidth			22—27	22—27	22—27
PDCCH/PCFICH/PHICH Reference measurement channel defined in A.3.1.2.1			R.6 FDD	R.6 FDD	R.6 FDD
OCNG Patterns defined in A.3.2.1.1 (OP.1 FDD) and A.3.2.1.2 (OP.2 FDD)			OP.2 FDD	OP.2 FDD	OP.2 FDD
PBCH_RA		dB	0	0	0
PBCH_RB
PSS_RA
SSS_RA
PCFICH_RB
PHICH_RA
PHICH_RB
PDCCH_RA
PDCCH_RB
PDSCH_RA
PDSCH_RB
OCNG_RANote1
OCNG_RBNote1
Note2	Bands 1, 4, 6, 10, 11, 18, 19, 21, 23 and 24	dBm/15 kHz	-80	-104.70	-119.50
	Bands 2, 5 and 7				-117.50
	Band 25				-116.00
	Bands 3, 8, 12, 13, 14, 17, 20 and 22				-116.50
	Band 9				-118.50
		dB	-1.75	-4.0	-4.0
RSRPNote3	Bands 1, 4, 6, 10, 11, 18, 19, 21, 23 and 24	dBm/15 kHz	-81.75	-108.70	-123.50
	Bands 2, 5 and 7				-121.50
	Band 25				-120.00
	Bands 3, 8, 12, 13, 14, 17, 20 and 22				-120.50
	Band 9				-122.50
RSRQNote3	Bands 1, 4, 6, 10, 11, 18, 19, 21, 23 and 24	dB	-14.76	-16.25	-16.25
	Bands 2, 5 and 7
	Band 25
	Bands 3, 8, 12, 13, 14, 17, 20 and 22
	Band 9
IoNote3	Bands 1, 4, 6, 10, 11, 18, 19, 21, 23 and 24	dBm/9 MHz	-50	-75.46	-90.26
	Bands 2, 5 and 7				-88.26
	Band 25				-86.76
	Bands 3, 8, 12, 13, 14, 17, 20 and 22				-87.26
	Band 9				-89.26
		dB	-1.75	-4.0	-4.0
Propagation condition		-	AWGN	AWGN	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. 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: RSRQ, RSRP and Io levels have been derived from other parameters for information purposes. They are not settable parameters themselves. Note 4: RSRP and RSRQ minimum requirements are specified assuming independent interference and noise at each receiver antenna port.

<< Some clauses skipped >>

We note that the level and time parameters in TS 25.123 TC A.9.2.5b.1 are identical with TC A.9.2.5b.2 for corresponding band. The same treatment for Test Tolerances can be applied for both Test cases. We can ensure that the proposed solution can be applied to both E-UTRA FDD and E-UTRA TDD RSRQ measurement test cases.

3 Discussion

In the test case, there are two cells, serving cell 1 (UTRA TDD cell), and neighbour cell 2 (UTRA FDD cell).

The RSRQ of E-UTRA cell 2 is being measured from a UE camped on the UTRA TDD cell 1. The test case has three subtests, Test 1, Test 2 and Test 3. The tests are designed to test the UE at three points in the level range over which the RSRQ accuracy requirement applies:

• Test 1 applies at the highest power where the reporting accuracy is ±2.5dB, Io just below -50dBm.

• Test 2 applies at the middle power where the reporting accuracy is ±3.5dB, Ês/Iot < -3dB.

• Test 2 applies at the lowest power where the reporting accuracy is ±3.5dB, just above Ref. Sensitivity and Ês/Iot < -3dB.

In Test 2 and all variants of Test 3 the Ês/Iot value for the weaker cell 2 is set at the bottom of the range of Ês/Iot  -4 dB for cell detection given in the core requirement TS 36.133 for E-UTRAN inter frequency measurements. The UE measures the Reported RSRQ of cell 2.

4 Calculation of Test Tolerances

General approach

The general approach is given in the steps below:

1. Copy the originally specified key parameters from the core requirements

2. Where relevant, calculate derived parameters from the core requirements

3. Define uncertainties for a minimum set of parameters

4. Define controlled parameters (critical to the test verdict), calculate sensitivity factors and uncertainty

5. Determine which original or derived parameters to offset (apply Test Tolerances to) and by how much

6. Recalculate original or derived parameters including Test Tolerances

7. Check that the controlled parameters meet requirements to get the correct test verdict

Each step is explained below, and the calculations are given in the accompanying spreadsheet.

a) Original specified key parameters

The key parameters are selectively copied from tables 8.7.16.4.1-2 and 8.7.16.4.1-3 in TS 34.122. Note that Tables 8.7.16.5-2 and 8.7.16.5-3 contain test limits that will be modified by the Test Tolerances at step g). The key parameters are selected as the minimum set to define the cell power levels, which are I_oc, Î_or/I_oc, E_c/I_or for Cell 1 and N_oc, E_s/N_oc for Cell 2. All the other parameters such as RSRP, RSRQ, E_s/I_ot and I_o are derived, and not independently settable by the Test System.

The key parameters appear in section a) of the accompanying spreadsheet. The table layout has been adapted from tables 8.7.16.4.1-2 and 8.7.16.4.1-3 in TS 34.122, to make it consistent with other RRM Test Tolerance spreadsheets and to allow the spreadsheet calculations to be done in a consistent way.

In the spreadsheet the five FDD variants of 8.7.16 Test 3 are treated as separate tests, to make the spreadsheet calculations consistent and easy to copy. The groups of bands are listed in ascending dB order of Refsens, to make checking easier and to align with the core requirement side conditions in TS 36.133 Annex B.

In the spreadsheet the three TDD variants of 8.7.17 Test 3 are treated in a similar way to FDD.

b) Derived parameters

A number of derived parameters are calculated, using the base information in a). The reason for deriving each additional parameter is given in the “Comment” column of section b) in the accompanying spreadsheet.

c) Uncertainties

The SS provides 2 cells on different frequencies, each with AWGN. We propose to control the following parameters:

• AWGN absolute power on cell 1 frequency, I_oc ±0.7 dB

• Ratio of cell 1 signal / AWGN, Î_or / I_oc ±0.3 dB

• Ratio of cell 1 code level / I_or , Ec / I_or ± 0.1dB

• AWGN absolute power on cell 2 frequency, N_oc ±0.7 dB averaged over BW_Config

• AWGN absolute power on cell 2 frequency, N_oc ±1.0 dB for PRBs #22-27

• Ratio of cell 2 signal / AWGN, Ê_s / N_oc ±0.3 dB averaged over BW_Config

• Ratio of cell 2 signal / AWGN, Ê_s / N_oc ±0.8 dB for PRBs #22-27

In this test the UE measures the RSRQ of Cell 2 over specific Physical Resource Block (PRB) numbers #22 to #27. The generic AWGN parameters values similar to those used in performance tests are therefore unsuitable, because the AWGN flatness specification would allow a large deviation for the RSRQ power in PRBs #22 to #27.

In addition, this test has separate constraints on the absolute RSRP reported values (derived from UE measurements over PRBs #22 to #27), and on the overall power in the configured bandwidth I_o.

Two sets of parameters are therefore given. The set averaged over the configured bandwidth have similar values to those already proposed for other tests. The set averaged over PRBs #22 to #27 have wider values, but constraining the deviation enough not to widen the RSRQ reporting range too much.

We note also that the outcome of this test is a range of allowed RSRQ values reported by the UE. The UE reporting accuracy given in TS 36.133 Table 9.1.6.1-1 is therefore taken into account when determining the test limits, although it is not an uncertainty of the test system itself.

This choice forms a minimum set (separately for PRBs #22-27, and for “averaged over BW_Config”), so the superposition principle can be applied if necessary.

They appear in section c) in the accompanying spreadsheet.

d) Controlled parameters critical to verdict

In many RRM test cases there is not a simple one-to-one relationship between the parameters that can be set by the test equipment, and their effect on parameters determining the test verdict.

It is therefore essential to identify those parameters determining the test verdict. In this test case there are two aspects to consider:

• The uncertainties in the stimulus set by the Test system (Downlink signals)

• The uncertainties in the UE response (RSRQ reports)

The stimulus set by the Test system should be within the constraints (side conditions) for the UE measurement. For Cell 2 which is being measured they are the E_s/I_ot range, the RSRP power range, and the I_o power range, over which the UE meets the specified RSRQ reporting accuracy. For Cell 1 we have taken the side conditions for P-CCPCH RSCP measurement. Although Cell 1 is not being measured in this test case, if the measurement conditions are met we can be sure that the Cell 1 downlink signal will not cause any unexpected UE behaviour.

The 7 controlled parameters listed in the accompanying spreadsheet have been derived by study of the test case and by careful reading of the relevant clauses in TS 25.123 and TS 36.133. The reason for each parameter being critical to the test verdict is given briefly in the “Comment” column of section d) in the accompanying spreadsheet. Information about the value to be achieved is given later in the “Comment” column of section g) in the spreadsheet.

The uncertainty in UE reporting accuracy is also listed in a separate row. The range of reported results is affected by both the Test system stimulus setting uncertainty and the UE reporting accuracy.

In general all the values are listed for Test 1, Test 2 and the five FDD variants of Test 3.

Having identified the parameters critical to the test verdict which need to be controlled, we now need to consider how they are affected by the parameters which can be set by the test equipment. This is done by working out “sensitivity factors”. A sensitivity factor is just the ratio (effect on a critical parameter y / a test equipment uncertainty x), and is usually in dB/dB. Often it can be derived by inspection as one or zero. For example, an error of 1dB in the Cell 2 absolute AWGN level N_oc would cause 1dB error in the Cell 2 RSRP, so the sensitivity factor is 1.000 for all tests. However the same error of 1dB in the Cell 2 absolute AWGN level N_oc would cause no change to E_s/I_ot, because all other powers on that frequency are specified relative to N_oc, so the sensitivity factor is zero.

In some cases, the sensitivity factor is an intermediate value. For example, the Cell 2 E_s/N_oc has an effect on Frequency 2 I_o which depends on ratios of the powers making up the total. In such cases a sensitivity factor value between 0 and 1 results. It is important to calculate these correctly to obtain the overall uncertainty.

For example,

• In Test 2, the effect of Cell 2 E_s/N_oc uncertainty on Frequency 2 I_o is x 0.285

These factors can also be derived intuitively. For example, Cell 2 forms 28.5% of the total power on Frequency 2. A change in the power of Cell 2 E_s/N_oc alone is diluted in the overall power.

Having filled in the matrix of sensitivity factors, the accompanying spreadsheet calculates the overall uncertainty for each controlled parameter, taking into account the uncertainties and sensitivity factors for each parameter that can be set by the test equipment. This process follows the superposition principle. More details and explanation can be found in section 4 of TS 36.903. Uncertainties are calculated separately for Test 1, Test 2 and the five FDD variants of Test 3.

For the test system uncertainties the normal procedure of combining uncorrelated uncertainties root-sum-square is followed.

When the test system uncertainties and the UE RSRQ reporting accuracy are combined, the (root-sum square of test system uncertainties) is added arithmetically to the UE RSRQ reporting accuracy. If all the uncertainties were combined root-sum square, the resulting smaller test limits could case a conformant test system to fail a conformant UE, which would be unacceptable.

e) Determine parameters to offset

We observe that for Test 1 the I_o of cell 2 is close to the upper limit of -50dBm with nominal conditions, and that the test equipment uncertainties of ±0.71dB could take the UE outside the allowed range. The N_oc of Cell 2 is therefore decreased by an amount sufficient to achieve Cell 2 I_o ≤ -50dBm.

In Test 1 the E_s/I_ot of both cells is much larger than -3dB so the effect of uncertainty is not a concern.

In Test 2 and Test 3 the E_s/I_ot of Cell 2 is set at the lower limit of RSRP and SCH Ês/Iot  -4dB given in the core requirement TS 36.133 v10.6.0 for E-UTRAN inter frequency measurements (specifications up to Rel-9 use a different format and cover less bands, but the equivalent figures are the same):

B.2.3 Conditions for E-UTRAN inter-frequency measurements

This section defines the E-UTRAN inter-frequency SCH_RP, SCH Ês/Iot, RSRP and RSRP Ês/Iot applicable for a corresponding operating band

The conditions for inter-frequency E-UTRAN measurements with autonomous gap are defined in Table B.2.3-1

Table B.2.3-1. E-UTRAN inter-frequency measurements

Parameter	Conditions
	Bands	Bands	Bands	Bands	Bands
	1, 4, 6, 10, 11, 18, 19, 21, 23, 24, 33, 34, 35, 36, 37, 38, 39, 40	9, 42, 43	2, 5, 7, 41	3, 8, 12, 13, 14, 17, 20, 22	25
RSRP|dBm 	-125 dBm	-124 dBm	-123 dBm	-122 dBm	-121.5dBm
SCH_RP|dBm	-125 dBm	-124 dBm	-123 dBm	-122 dBm	-121.5dBm
RSRP Ês/Iot	-4 dB
SCH Ês/Iot 	-4 dB

This requirement is tighter than the Ê_s/I_ot  -6dB specified in TS 36.133 Table 9.1.3.1-1, but must be met for the test case to work as intended. The test equipment uncertainties of ±0.8dB could take the UE outside the allowed range, so the E_s/N_oc of Cell 2 is therefore increased by an amount sufficient to achieve Cell 2 Ê_s/I_ot  -4dB.

In Test 3 the Cell 2 nominal RSRP is set towards the lower limit of the requirement specified in TS 36.133 v10.6.0 Table B.2.3-1, for example at -120dBm for FDD Band 25. However the test equipment uncertainties do not take the UE below the allowed limit of -121.5dBm for FDD Band 25. No change is therefore required to N_oc for Test 3. Note that the other FDD bands in Test 2 are also within RSRP range, so no offsets are required.

For Cell 1 the parameters are specified in TS 25.123 v10.6.0:

9.1.1 Performance for UE measurements in downlink (RX)

9.1.1.1 P-CCPCH RSCP (TDD)

<< Some clauses skipped >>

9.1.1.1.1.2 1.28 Mcps TDD option

The accuracy requirements in table 9.1A are valid under the following conditions:

P-CCPCH RSCP  -102 dBm

P-CCPCH Ec/Io > -8 dB

DwPCH_Ec/Io > -5 dB

Table 9.1A: P-CCPCH_RSCP absolute accuracy

Parameter	Unit	Accuracy [dB]		Conditions
		Normal condition	Extreme condition	Io [dBm/ 1.28 MHz]
P-CCPCH_RSCP	dBm	 6	 9	-94...-70
	dBm	 8	 11	-70...-50

All parameters are easily within range, so no offsets are required.

f) Parameters modified by Test Tolerances

Based on the decision in e), the set of parameters in a) and b) is reproduced in section f) of the accompanying spreadsheet, but this time modified by the Test Tolerances (applied offsets).

In Test 1 the N_oc of Cell 2 is decreased by an amount sufficient to achieve Cell 2 I_o ≤ -50dBm. The actual offset required is -0.8dB. This value is found empirically by observing the minimum/maximum parameter values in step g).

In Test 2 and Test 3 the E_s/N_oc of Cell 2 is increased by an amount sufficient to achieve Cell 2 E_s/I_ot ≥ -4dB. The actual offset required is 0.8dB, which is the amount of the Cell 2 E_s/I_ot uncertainty. The offset will make E_s/I_ot be in the range of -4dB ~ -2.4dB, partly greater than the side condition of E_s/I_ot < -3dB. But for simplicity, the ±3.5dB of RSRQ measurement accuracy is still applied for normal conditions.

Re-derived parameters are calculated using the same methods as were used in step b).

g) Check controlled parameters Min/Max

Using a format similar to that in step d), the nominal value of each controlled parameter is recalculated, as at least some will have changed from the original due to the application of the Test Tolerances in step f).

The minimum and maximum values, due to variability from uncertainties, of controlled parameters is then calculated and compared against the requirements (E_s/I_ot range, RSRP power range, and the Io power range). The critical requirement for each parameter is given briefly in the “Comment” column of section g) in the accompanying spreadsheet. The cases closest to limit are identified by turquoise cells in the spreadsheet. If all the stimulus requirements are met, then the chosen stimulus offsets are acceptable.

It can be seen that with the uncertainty values and Test Tolerances proposed, the stimulus requirements are met.

For this test, the verdict is based on the RSRQ values reported by the UE. As stated earlier, the reported values are affected by:

• The uncertainties in the stimulus set by the Test system (Downlink signal)

• The uncertainties in the UE response (RSRQ reports)

Having ensured that the stimulus set by the Test system remains within the side conditions, and knowing its uncertainty, we now need to calculate the range of RSRQ values that a conformant UE could report. The reporting accuracy and mapping table are given in TS 36.133 Tables 9.1.6.1-1 and 9.1.7-1:

Table 9.1.6.1-1: RSRQ Inter frequency absolute accuracy

Parameter	Unit	Accuracy [dB]		Conditions1
		Normal condition	Extreme condition	Bands 1, 4, 6, 10, 11, 18, 19, 21, 23, 24, 33, 34, 35, 36, 37, 38, 39, 40	Bands 2, 5, 7, 41	Band 25	Band 26	Bands 3, 8, 12, 13, 14, 17, 20, 22	Bands 9, 42, 43
				Io	Io	Io	Io	Io	Io
RSRQ when RSRP Ês/Iot > -3 dB	dBm	2.5	4	-121dBm/15kHz … -50dBm/ BWChannel	-119dBm/15kHz … -50dBm/ BWChannel	-117.5dBm/15kHz … -50dBm/ BWChannel	-118.5dBm/15kHz … -50dBm/ BWChannel2	-118dBm/15kHz … -50dBm/ BWChannel	-120dBm/15kHz … -50dBm/ BWChannel
RSRQ when RSRP Ês/Iot ≥ -6 dB	dBm	3.5	4	-121dBm/15kHz … -50dBm/ BWChannel	-119dBm/15kHz … -50dBm/ BWChannel	-117.5dBm/15kHz … -50dBm/ BWChannel	-118.5dBm/15kHz … -50dBm/ BWChannel2	-118dBm/15kHz … -50dBm/ BWChannel	-120dBm/15kHz … -50dBm/ BWChannel
Note 1: Io is assumed to have constant EPRE across the bandwidth. Note 2: The condition is -119dBm/15kHz … -50dBm/BWChannel when the carrier frequency of the assigned E-UTRA channel bandwidth is within 865-894 MHz

<< Some clauses skipped >>

9.1.7 RSRQ Measurement Report Mapping

The reporting range of RSRQ is defined from -19.5 dB to -3 with 0.5 dB resolution.

The mapping of measured quantity is defined in table 9.1.7-1. The range in the signalling may be larger than the guaranteed accuracy range.

Table 9.1.7-1: RSRQ measurement report mapping

Reported value	Measured quantity value	Unit
RSRQ_00	RSRQ  -19.5	dB
RSRQ_01	-19.5  RSRQ < -19	dB
RSRQ_02	-19  RSRQ < -18.5	dB
…	…	…
RSRQ_32	-4  RSRQ < -3.5	dB
RSRQ_33	-3.5  RSRQ < -3	dB
RSRQ_34	-3  RSRQ	dB

The normal and extreme conditions are tested in TS 34.122.

The acceptable range of RSRQ values is calculated taking into account the uncertainties in the stimulus set by the Test system, the uncertainties in the UE response, and the UE measurement report mapping function. The calculation is done in section g) of the accompanying spreadsheet.

The RSRQ values calculated are for normal conditions. In test 1 the RSRQ values are 1.5dB wider at each end, in test 2 and test 3 the RSRQ values are 0.5dB wider at each end for extreme conditions.

5. Treatment of Test Case 8.7.17, E-UTRAN TDD RSRQ

TS 34.122 also contains a similar E-UTRAN TDD RSRQ Test case in clause 8.7.17.

The E-UTRA TDD Test case in 8.7.17 has the same tests and the signal levels are similar, so we propose to apply the same level uncertainties and Test Tolerances approach as for E-UTRA FDD. A separate tab has been provided on the spreadsheet. Although there are less band groups, all the numeric values are a subset of those used for the FDD Test case 8.7.16.

The “TC 8.7.17” tab on the spreadsheet uses the same frequency band columns and dB values as FDD, but with column titles adapted for the TDD bands. Unused columns have the text greyed out, and they do not form part of the analysis. The values and formulae are however left, in case of future need.