Tolerance analysis for TS 34.121-1

Title: Test Tolerance analysis for TS 34.121-1 Test cases 8.7.12 and 8.7.13

Source: CATT, Anritsu

1 Introduction

This document relates to the E-UTRAN FDD RSRQ and E-UTRAN TDD RSRQ absolute accuracy Test cases 8.7.12 and 8.7.13 in TS 34.121-1.

The document describes the process to derive the Test Tolerances. The calculations are provided in the accompanying spreadsheet.

2 Test case in TS 34.121-1

The test conditions are defined in TS 34.121-1. However, as the current version 11.1.1 does not align with recent changes to TS 25.133, the extracts for the test case are taken from Annex A of TS 25.133 v11.6.0. For the relevant core requirements, TS 25.133 clause 9.1.4b on RSRQ refers to TS 36.133, inter-frequency, so the extracts for the E-UTRA core requirements are taken from TS 36.133 v11.6.0 .

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

Accuracy		Conditions
Normal condition	Extreme condition	Ês/Iot	Io Note 1 range
			E-UTRA operating bands	Minimum Io	Maximum Io
dB	dB	dB		dBm/15kHz Note 5	dBm/BWChannel
2.5	4	-3 dB	1, 4, 6, 10, 11, 18, 19, 21, 23, 24, 33, 34, 35, 36, 37, 38, 39, 40	-121	-50
			9, 42, 43	-120	-50
			28	-119.5	-50
			2, 5, 7, 27, 41, 44	-119	-50
			26	-118.5 Note 2	-50
			3, 8, 12, 13, 14, 17, 20, 22, 29 Note 4	-118	-50
			25	-117.5	-50
3.5	4	-6 dB	Note 3	Note 3	Note 3
NOTE 1: Io is assumed to have constant EPRE across the bandwidth. NOTE 2: The condition has the minimum Io of -119 dBm/15kHz when the carrier frequency of the assigned E-UTRA channel bandwidth is within 865-894 MHz. NOTE 3: The same bands and the same Io conditions for each band apply for this requirement as for the corresponding highest accuracy requirement. NOTE 4: Band 29 is used only for E-UTRA carrier aggregation with other E-UTRA bands. NOTE 5: The condition level is increased by ∆>0, when applicable, as described in Sections B.4.2 and B.4.3.

Test case from TS 25.133:

A.9.1.12 E-UTRA FDD RSRQ absolute accuracy

A.9.1.12.1 Test Purpose and Environment

The purpose of this test is to verify that the E-UTRAN FDD RSRQ measurement absolute accuracy is within the specified limits. This test will verify the requirements in section 9.1.4b.

The test is carried out in Cell_DCH state using a compressed mode pattern with purpose “E-UTRAN Measurement”. The compressed mode pattern repeats every 80 ms and uses a gap length of 10 slots. Further details are found in TS 25.101 annex A.5.

Tables A.9.1.12.1-1 and A.9.1.12.1-2 define the limits of signal strengths and code powers on the UTRA FDD cell where the requirement is applicable. In the measurement control information periodic reporting of E-UTRAN RSRQ is indicated to the UE. The E-UTRAN FDD test parameters are given in Table A.9.1.12.1-3.

Table A.9.1.12.1-1: General UTRAN test parameters for E-UTRAN FDD RSRQ measurements

Parameter	Unit	Value	Comment
DCH parameters		DL Reference Measurement Channel 12.2 kbps	As specified in TS 25.101 section A.3.1
Power Control		On
Target quality value on DTCH	BLER	0.01
Compressed mode patterns - E-UTRAN measurement		Compressed mode reference pattern 2 Set 5	As specified in table A.22 TS 25.101 section A.5
Inter-RAT measurement quantity		E-UTRAN FDD RSRQ
Monitored cell list size		1 E-UTRAN FDD neighbour cell	Measurement control information is sent before the compressed mode pattern starts.

Table A.9.1.12.1-2: Cell specific UTRAN test parameters for E-UTRAN FDD RSRQ measurements

Parameter	Unit	Cell 1
UTRA RF Channel number	-	Channel 1
CPICH_Ec/Ior	dB	-10
PCCPCH_Ec/Ior	dB	-12
SCH_Ec/Ior	dB	-12
PICH_Ec/Ior	dB	-15
DCH_Ec/Ior	dB	Note 1
OCNS_Ec/Ior	dB	Note 2
Îor/Ioc	dB	-1
Ioc	dBm/ 3.84 MHz	-70
CPICH_Ec/Io	dB	-13.54
Propagation condition	-	AWGN
Note 1: The DPCH level is controlled by the power control loop Note 2: The power of the OCNS channel that is added shall make the total power from the cell to be equal to Ior.

Table A.9.1.12.1-3: E-UTRAN FDD RSRQ test parameters

Parameter		Unit	Test 1	Test 2	Test 3
			Cell 2	Cell 2	Cell 2
BWchannel		MHz	10	10	10
Measurement bandwidth			22—27	22—27	22—27
PDCCH/PCFICH/PHICH Reference measurement channel as defined in TS 36.133 A.3.1.2.1			R.6 FDD	R.6 FDD	R.6 FDD
OCNG Pattern as defined in TS 36.133 A.3.2.1.2			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, 7, 26 and 27 (Note 5)				-117.50
	Band 25				-116
	Band 28				-118
	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, 7, 26 and 27 (Note 5)				-121.50
	Band 25				-120
	Band 28				-122
	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, 7, 25, 26, 27 and 28
	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, 7, 26 and 27 (Note 5)				-88.26
	Band 25				-86.76
	Band 28				-88.76
	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. Note 5: For Band 26, the tests shall be performed with the assigned E-UTRA channel bandwidth within 865-894

<< Some clauses skipped >>

We note that the level and time parameters in TS 25.133 TC A.9.1.12 are identical with TC A.9.1.13 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 FDD cell), and neighbour cell 2 (E-UTRA FDD cell).

The RSRQ of E-UTRA cell 2 is being measured from a UE camped on the UTRA FDD 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, Ês/Iot > -3dB, Io just below -50dBm.

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

• Test 3 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 A.9.1.12.1-2 and A.9.1.12.1-3 in TS 25.133. Note that Tables 8.7.12.5.2 and 8.7.12.5.3 in TS34.121-1 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 Ioc, Îor/Ioc, Ec/Ior for Cell 1 and Noc, Es/Noc for Cell 2. All the other parameters such as RSRP, RSRQ, Es/Iot and Io 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 A.9.1.12.1-2 and A.9.1.12.1-3 in TS 25.133.

In the spreadsheet all the variants of TC 8.7.12 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.

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 , E_c / I_or ± 0.1dB

• AWGN absolute power on cell 2 frequency, N_oc ±1.0 dB averaged over BW_Config

• AWGN absolute power on cell 2 frequency, N_oc ±1.3 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 in PRBs #22 to #27.

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

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.

The absolute level uncertainties of N_oc are chosen to ensure the analysis and Test Requirements are valid for E-UTRA frequency bands up to 4.2GHz.

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 Es/Iot range, the RSRP power range, and the Io power range, over which the UE meets the specified RSRQ reporting accuracy. For Cell 1 we have taken the side conditions for CPICH 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 6 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 25.133 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 all the 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 Noc 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 Noc would cause no change to E_s/I_ot, because all other powers on that frequency are specified relative to Noc, so the sensitivity factor is zero.

In some cases, the sensitivity factor is an intermediate value. For example, the Cell 2 E_s/Noc has an effect on Frequency 2 Io 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 Es/Noc uncertainty on Frequency 2 Io 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/Noc 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 all the 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 Io of cell 2 is close to the upper limit of -50dBm with nominal conditions, and that the test equipment uncertainties of ±1.01dB could take the UE outside the allowed range. The Noc of Cell 2 is therefore decreased by an amount sufficient to achieve Cell 2 I_o ≤ -50dBm.

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

In Test 2 and Test 3 the Es/Iot of Cell 2 is set at the lower limit of RSRP and SCH Ês/Iot  -4dB given in the core requirement TS 36.133 for E-UTRAN inter frequency measurements:

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	E-UTRA operating bands	Minimum RSRP Note 1	Minimum SCH_RP Note 1	RSRP Ês/Iot	SCH Ês/Iot
		dBm/15kHz	dBm/15kHz	dB	dB
Conditions	1, 4, 6, 10, 11, 18, 19, 21, 23, 24, 33, 34, 35, 36, 37, 38, 39, 40	-125	-125	 -4	 -4
	9, 42, 43	-124	-124
	28	-123.5	-123.5
	2, 5, 7, 27, 41, 44	-123	-123
	26	-122.5 Note 2	-122.5 Note 2
	3, 8, 12, 13, 14, 17, 20, 22, 29 Note 3	-122	-122
	25	-121.5	-121.5
NOTE 1: This condition level is increased by ∆>0, when applicable, as described in Sections B.4.2 and B.4.3. NOTE 2: The condition is -123 dBm/15kHz when the carrier frequency of the assigned E-UTRA channel bandwidth is within 865-894 MHz. NOTE 3: Band 29 is used only for E-UTRA carrier aggregation with other E-UTRA bands.

This requirement is tighter than the Ês/Iot  -6dB specified in TS 36.133 Table 9.1.6.1-1, 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 Es/Noc 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 Table B.2.3-1. The test equipment uncertainties of ±1.53dB could take the UE below the allowed limit of (-121.5dBm +1dB) for FDD Band 25, taking into account the extra 1dB max from TS 36.133 clause A.3.5.1. The Noc of Cell 2 is therefore increased by an amount sufficient to achieve Cell 2 RSRP and SCH ≥ the requirement for each Band. Note that the bands in Test 2 are all within RSRP range, so no offsets are required.

For Cell 1 the parameters are specified in TS 25.133:

9.1 Measurement Performance for UE

<< Some clauses skipped >>

9.1.1.1.1 Absolute accuracy requirement

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

CPICH_RSCP1|_dBm.according to Annex B.3.1 for a corresponding Band

Table 9.1: CPICH_RSCP Intra frequency absolute accuracy

Parameter	Unit	Accuracy [dB]		Conditions
		Normal condition	Extreme condition	Band I, IV, VI, X, XI, XIX and XXI	Band II, V and VII	Band XXV and XXVI	Band III, VIII, XII, XIII, XIV, XX and XXII	Band IX
				Io [dBm/3,84 MHz]	Io [dBm/3,84 MHz]	Io [dBm/3,84 MHz]	Io [dBm/3,84 MHz]	Io [dBm/3,84 MHz]
CPICH_RSCP	dBm	 6	 9	-94...-70	-92…-70	-90.5…-70 (Note 1)	-91…-70	-93...-70
	dBm	 8	 11	-70...-50	-70…-50	-70…-50	-70…-50	-70...-50
NOTE 1: The condition is -92…-70 dBm/3.84 MHz when the carrier frequency of the assigned UTRA channel is within 869-894 MHz for the UE which supports both Band V and Band XXVI operating frequencies.

<< Some clauses skipped >>

B.3.1. Conditions for intra frequency CPICH RSCP measurements accuracy

This section defines the intra frequency CPICH RSRP applicable for a corresponding operating band.

The conditions for measurements accuracy of intra-frequency CPICH RSRP are defined in Table B.3.1-1

Table B.3.1-1. Conditions for measurements of intra-frequency CPICH RSRP

Parameter	Conditions
	Bands	Bands	Bands	Bands	Bands
	I, IV, VI, X, XI, XIX, XXI	IX	II, V, VII	III, VIII, XII, XIII, XIV, XX, XXII	XXV, XXVI
CPICH RSCP1|dBm 	-114 dBm	-113 dBm	-112 dBm	-111 dBm	-110.5dBm (Note 1)
Note 1: The condition is -112 dBm when the carrier frequency of the assigned UTRA channel is within 869-894 MHz for the UE which supports both Band V and Band XXVI operating frequencies.

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 Noc of Cell 2 is decreased by an amount sufficient to achieve Cell 2 Io ≤ -50dBm. The actual offset required is -1.1dB. This value is found empirically by observing the minimum/maximum parameter values in step g).

In Test 3 the Noc of Cell 2 is increased by an amount sufficient to achieve the Cell 2 RSRP and SCH requirement. The actual offset required is +0.3dB. This value is found empirically by observing the minimum/maximum parameter values in step g).

In Test 2 and Test 3 the Es/Noc of Cell 2 is increased by an amount sufficient to achieve Cell 2 Es/Iot ≥ -4dB. The actual offset required is 0.8dB, which is the amount of the Cell 2 E_s/Iot uncertainty. The offset will make Es/Iot be in the range of -4dB ~ -2.4dB, partly greater than the side condition of Es/Iot < -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 (Es/Iot 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

Accuracy		Conditions
Normal condition	Extreme condition	Ês/Iot	Io Note 1 range
			E-UTRA operating bands	Minimum Io	Maximum Io
dB	dB	dB		dBm/15kHz Note 5	dBm/BWChannel
2.5	4	-3 dB	1, 4, 6, 10, 11, 18, 19, 21, 23, 24, 33, 34, 35, 36, 37, 38, 39, 40	-121	-50
			9, 42, 43	-120	-50
			28	-119.5	-50
			2, 5, 7, 27, 41, 44	-119	-50
			26	-118.5 Note 2	-50
			3, 8, 12, 13, 14, 17, 20, 22, 29 Note 4	-118	-50
			25	-117.5	-50
3.5	4	-6 dB	Note 3	Note 3	Note 3
NOTE 1: Io is assumed to have constant EPRE across the bandwidth. NOTE 2: The condition has the minimum Io of -119 dBm/15kHz when the carrier frequency of the assigned E-UTRA channel bandwidth is within 865-894 MHz. NOTE 3: The same bands and the same Io conditions for each band apply for this requirement as for the corresponding highest accuracy requirement. NOTE 4: Band 29 is used only for E-UTRA carrier aggregation with other E-UTRA bands. NOTE 5: The condition level is increased by ∆>0, when applicable, as described in Sections B.4.2 and B.4.3.

<< 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 34.121-1.

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 8.7.13, E-UTRAN TDD RSRQ

TS 34.121-1 also contains a similar E-UTRAN TDD RSRQ Test case in clause 8.7.13.

The E-UTRA TDD Test case in 8.7.13 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 single tab on the spreadsheet provided is used to cover both 8.7.12 and 8.7.13 as all the numeric values are identical.