13.3 Transmitter output power and burst timing

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

13.3.1 Definition

The transmitter output power is the average value of the power delivered to an artificial antenna or radiated by the MS and its integral antenna, over the time that the useful information bits of one burst are transmitted.

The transmit burst timing is the envelope of the RF power transmitted with respect to time. The timings are referenced to the transition from bit 13 to bit 14 of the Training Sequence ("midamble") before differential decoding. The timing of the modulation is referenced to the timing of the received signal from the SS.

13.3.2 Conformance requirement

1. The MS maximum output power shall be as defined in 3GPP TS 05.05, subclause 4.1.1, table for GMSK modulation, according to its power class, with a tolerance of ±2 dB under normal conditions; 3GPP TS 05.05, subclause 4.1.1, table for GMSK modulation.

2. The MS maximum output power shall be as defined in 3GPP TS 05.05, subclause 4.1.1, table for GMSK modulation, according to its power class, with a tolerance of ±2,5 dB under extreme conditions; 3GPP TS 05.05, subclause 4.1.1, table for GMSK modulation; 3GPP TS 05.05 annex D in subclauses D.2.1 and D.2.2.

3. The power control levels shall have the nominal output power levels as defined in 3GPP TS 05.05, subclause 4.1.1, from the lowest power control level up to the maximum output power corresponding to the class of the MS (for tolerance on maximum output power see conformance requirements 1), with a tolerance of ±3 dB, ±4 dB or ±5 dB under normal conditions; 3GPP TS 05.05, subclause 4.1.1.

4. The power control levels shall have the nominal output power levels as defined in 3GPP TS 05.05, 4.1.1, from the lowest power control level up to the maximum output power corresponding to the class of the MS (for tolerance on maximum output power see conformance requirements 2), with a tolerance of ±4 dB, ±5 dB or ±6 dB under extreme conditions; 3GPP TS 05.05, subclause 4.1.1; 3GPP TS 05.05 annex D subclauses D.2.1 and D.2.2.

5. The output power actually transmitted by the MS at consecutive power control levels shall form a monotonic sequence and the interval between power control levels shall be 2 ± 1,5 dB (1 ± 1dB between power control level 30 and 31 for PCS 1 900); 3GPP TS 05.05, subclause 4.1.1.

6. The transmitted power level relative to time for a normal burst shall be within the power/time template given in 3GPP TS 05.05, annex B in figure B.1:

6.1 Under normal conditions; 3GPP TS 05.05, subclause 4.5.2.

6.2 Under extreme conditions; 3GPP TS 05.05, subclause 4.5.2, 3GPP TS 05.05 annex D in subclauses D.2.1 and D.2.2.

7. When accessing a cell on the RACH and before receiving the first power command during a communication on a DCCH or TCH (after an IMMEDIATE ASSIGNMENT), all GSM, class 1 and class 2 DCS 1 800 and PCS 1 900 MS shall use the power control level defined by the MS_TXPWR_MAX_CCH parameter broadcast on the BCCH of the cell, or if MS_TXPWR_MAX_CCH corresponds to a power control level not supported by the MS as defined by its power class, the MS shall act as though the closest supported power control level had been broadcast. A Class 3 DCS 1 800 MS shall use the POWER_OFFSET parameter.

8. The transmissions from the MS to the BS, measured at the MS antenna, shall be 468,75 – TA bit periods behind the transmissions received from the BS, where TA is the last timing advance received from the current serving BS. The tolerance on these timings shall be ±1 bit period:

8.1 Under normal conditions; 3GPP TS 05.10, subclause 6.4.

8.2 Under extreme conditions; 3GPP TS 05.10, subclause 6.4, 3GPP TS 05.05 annex D in subclauses D.2.1 and D.2.2.

9. The transmitted power level relative to time for a random access burst shall be within the power/time template given in 3GPP TS 05.05, annex B in figure B.3:

9.1 Under normal conditions; 3GPP TS 05.05, subclause 4.5.2.

9.2 Under extreme conditions; 3GPP TS 05.05, subclause 4.5.2, 3GPP TS 05.05 annex D in subclauses D.2.1 and D.2.2.

10. The MS shall use a TA value of 0 for the Random Access burst sent:

10.1 Under normal conditions; 3GPP TS 05.10, subclause 6.6.

10.2 Under extreme conditions; 3GPP TS 05.10, subclause 6.6, 3GPP TS 05.05 annex D in subclauses D.2.1 and D.2.2.

11. In addition, if the network indicates support for MS power reduction by broadcasting parameter INIT_PWR_RED (see 3GPP TS 44.018) and if the latest RLA-value, RLA_C or RLA_P (see section 6.1) for the measured signal strength from the BTS the MS is accessing is -48 dBm or higher immediately before the access attempt, the MS power shall not exceed.

PRED = min{(MS_TXPWR_MAX_CCH, (LB_MS_TXPWR_MAX_CCH + Band_offset), (P5- INIT_PWR_RED)} for GSM 400, GSM 700, T-GSM 810, GSM 850 and GSM 900 and

PRED = min{ MS_TXPWR_MAX_CCH, (P0+2-INIT_PWR_RED)} for DCS 1800 and PCS 1900,

where P5 and P0 are the power control levels for respective band in 3GPP TS 45.005.

The power reduction only applies for the first transmission of the access burst on the RACH. If the initial transmission fails due to no response from the network, the MS shall not apply power reduction in remaining transmissions. The power reduction also applies for DCCH or TCH (after an IMMEDIATE ASSIGNMENT) under the same received signal strength conditions until the ordered power control level in the SACCH L1 header differs from MS_TXPWR_MAX_CCH or LB_MS_TXPWR_MAX_CCH + Band_offset, whichever is applicable or a L3 message with a valid power control command is received.

If INIT_PWR_RED is not broadcast, no power reduction shall apply.

3GPP TS 45.008, subclause 4.2, 3GPP TS 44.018, subclause 10.5.2.33b.11.1 Under normal conditions; 3GPP TS 05.10, subclause 6.6.

13.3.3 Test purpose

1. To verify that the maximum output power of the MS, under normal conditions, is within conformance requirement 1.

2. To verify that the maximum output power of the MS, under extreme conditions, is within conformance requirement 2.

3. To verify that all nominal output power levels, relevant to the class of MS, are implemented in the MS and have output power levels, under normal conditions, within conformance requirement 3.

4. To verify that all nominal output levels, relevant to the class of MS, are implemented in the MS and have output power levels, under extreme conditions, within conformance requirement 4.

5. To verify that the step in the output power transmitted by the MS at consecutive power control levels is within conformance requirement 5 under normal conditions.

6. To verify that the output power relative to time, when sending a normal burst is within conformance requirement 6:

6.1 Under normal conditions.

6.2 Under extreme conditions.

7. To verify that the MS uses the maximum power control level according to its power class if commanded to a power control level exceeding its power class.

8. To verify that, for normal bursts, the MS transmissions to the BS are timed within conformance requirement 8:

8.1 Under normal conditions.

8.2 Under extreme conditions.

9. To verify that the output power relative to time, when sending an access burst is within conformance requirement 9:

9.1 Under normal conditions.

9.2 Under extreme conditions.

10. To verify that, for an access burst, the MS transmission to the BS is timed within conformance requirement 10:

10.1 Under normal conditions.

10.2 Under extreme conditions.

11. To verify that, for the initial access burst, the MS applies power reduction if broadcasted by network according to conformance requirement 11:

11.1 Under normal conditions.

12. To verify that the MS does not apply power reduction for the transmission on DCH or TCH if a valid power control command is received by L3 message and power reduction is broadcasted by the network according to conformance requirement 11:

12.1 Under normal conditions.

13. To verify that the MS does not apply power reduction for the remaining transmission if initial access burst is not answered by the SS, if power reduction is broadcasted by the network according to conformance requirement 11:

13.1 Under normal conditions.

13.3.4 Methods of test

Two methods of test are described, separately for:

1) equipment fitted with a permanent antenna connector or fitted with a temporary test connector as a test fixture, and for

2) equipment fitted with an integral antenna, and which cannot be connected to an external antenna.

NOTE: The behaviour of the MS in the system is determined to a high degree by the antenna, and this is the only transmitter test in this EN using the integral antenna. Further studies are ongoing on improved testing on the integral antenna, taking practical conditions of MS use into account.

13.3.4.1 Method of test for equipment with a permanent or temporary antenna connector

13.3.4.1.1 Initial conditions

A call is set up by the SS according to the generic call set up procedure on a channel with ARFCN in the Mid ARFCN range, power control level set to Max power. MS TXPWR_MAX_CCH is set to the maximum value supported by the Power Class of the Mobile under test. For DCS 1 800 mobile stations the POWER_OFFSET parameter is set to 6 dB.

If Specific PICS RACH Power Reduction is supported INIT_PWR_RED=0 in System Information 2Quarter is transmitted. Serving Cell downlink level is set to-54dBm.

NOTE: Downlink level -54 dBm is chosen to ensure that a MS does not reduce the RACH power. So it is still possible to test RACH power without power reduction.

Specific PICS statements:

– MS supporting RACH Power Reduction (TSPC_RACH_Power_Reduction)

PIXIT Statements:

13.3.4.1.2 Procedure

a) Measurement of normal burst transmitter output power.

– The SS takes power measurement samples evenly distributed over the duration of one burst with a sampling rate of at least 2/T, where T is the bit duration. The samples are identified in time with respect to the modulation on the burst. The SS identifies the centre of the useful 147 transmitted bits, i.e. the transition from bit 13 to bit 14 of the midamble, as the timing reference.

– The transmitter output power is calculated as the average of the samples over the 147 useful bits. This is also used as the 0 dB reference for the power/time template.

b) Measurement of normal burst timing delay.

– The burst timing delay is the difference in time between the timing reference identified in a) and the corresponding transition in the burst received by the MS immediately prior to the MS transmit burst sampled.

c) Measurement of normal burst power/time relationship.

– The array of power samples measured in a) are referenced in time to the centre of the useful transmitted bits and in power to the 0 dB reference, both identified in a).

d) Steps a) to c) are repeated with the MS commanded to operate on each of the nominal output power levels supported by the MS, (see tables 13-2, 13-3 and 13-4) and in step a) on one nominal output power level higher than supported by the MS.

e) The SS commands the MS to the maximum power control level supported by the MS and steps a) to c) are repeated for ARFCN in the Low and High ranges.

f) Measurement of access burst transmitter output power.

– The SS causes the MS to generate an Access Burst on an ARFCN in the Mid ARFCN range, this could be either by a handover procedure or a new request for radio resource. In the case of a handover procedure the Power Level indicated in the HANDOVER COMMAND message is the maximum power control level supported by the MS. In the case of an Access Burst the MS shall use the Power Level indicated in the MS_TXPWR_MAX_CCH parameter. If the power class of the MS is DCS 1 800 Class 3, the MS shall also use the POWER_OFFSET parameter.

– The SS takes power measurement samples evenly distributed over the duration of the access burst as described in a). However, in this case the SS identifies the centre of the useful bits of the burst by identifying the transition from the last bit of the synch sequence. The centre of the burst is then five data bits prior to this point and is used as the timing reference.

– The transmitter output power is calculated as the average of the samples over the 87 useful bits of the burst. This is also used as the 0 dB reference for the power/time template.

g) Measurement of access burst timing delay.

– The burst timing delay is the difference in time between the timing reference identified in f) and the MS received data on the common control channel.

h) Measurement of access burst power/time relationship.

– The array of power samples measured in f) is referenced in time to the centre of the useful transmitted bits and in power to the 0 dB reference, both identified in f).

i) Depending on the method used in step f) to cause the MS to send an Access Burst, the SS sends either a HANDOVER COMMAND with power control level set to 10 or it changes the System Information elements MS_TXPWR_MAX_CCH and for DCS 1 800 the POWER_OFFSET on the serving cell BCCH in order to limit the MS transmit power on the Access Burst to power control level 10 (+23 dBm for GSM 400, GSM 700, T-GSM 810, GSM 850, and GSM 900 or +10 dBm for DCS 1 800 and PCS 1 900) and then steps f) to h) are repeated.

j) If MS supporting RACH Power Reduction the call is released and the Serving cell downlink level is set to -42 dBm. INIT_PWR_RED is set to 1. The SS waits for 30 seconds (Possible cell reselection). Step f) is repeated.

k) If MS supporting RACH Power Reduction SS commands the MS via ASSIGNMENT COMMAND to the maximum power control level supported by the MS and steps a) to c) are repeated for ARFCN in the Mid range.

l) If MS supporting RACH Power Reduction the call is released and the Serving cell downlink level is set to -42 dBm. INIT_PWR_RED is set to 1. The SS waits for 30 seconds (Possible cell reselection). Step f) is repeated but the SS does not answer the initial, but the second transmission of the access burst.

m) Steps a) to i) are repeated under extreme test conditions (annex 1, TC2.2) except that the repeats at step d) are only performed for power control level 10 and the minimum nominal output power level supported by the MS.

13.3.4.2 Method of test for equipment with an integral antenna

NOTE: If the MS is equipped with a permanent connector, such that the antenna can be disconnected and the SS be connected directly, then the method of subclause 13.3.4.1 will be applied.

The tests in this subclause are performed on an unmodified test sample.

13.3.4.2.1 Initial conditions

The MS is placed in the anechoic shielded chamber (annex 1, GC5) or on the outdoor test site, on an isolated support, in the position for normal use, at a distance of at least 3 metres from a test antenna, connected to the SS.

NOTE: The test method described has been written for measurement in an anechoic shielded chamber. If an outdoor test site is used then, in addition, it is necessary to raise/lower the test antenna through the specified height range to maximize the received power levels from both the test sample and the substitution antenna.

A call is set up by the SS according to the generic call set up procedure on a channel with ARFCN in the Mid ARFCN range, power control level set to Max power. MS_TXPWR_MAX_CCH is set to the maximum value supported by the Power Class of the Mobile under test. For DCS 1 800 mobile stations the POWER_OFFSET parameter is set to 6 dB.

13.3.4.2.2 Procedure

a) With the initial conditions set according to subclause 13.3.4.2.1 the test procedure in subclause 13.3.4.1.2 is followed up to and including step i), except that in step a), when measurements are done at maximum power for ARFCN in the Low, Mid and High range, the measurement is made eight times with the MS rotated by n*45 degrees for all values of n in the range 0 to 7.

The measurements taken are received transmitter output power measurements rather than transmitter output power measurements, the output power measurement values can be derived as follows.

b) Assessment of test site loss for scaling of received output power measurements.

The MS is replaced by a half-wave dipole, resonating at the centre frequency of the transmit band, connected to an RF generator.

The frequency of the RF signal generator is set to the frequency of the ARFCN used for the 24 measurements in step a), the output power is adjusted to reproduce the received transmitter output power averages recorded in step a).

For each indication the power, delivered by the generator (in Watts) to the half-wave dipole, is recorded. These values are recorded in the form Pnc, where n = MS rotation and c = channel number.

For each channel number used compute:

from which: Pac (Tx dBm) = 10log10(Pac) + 30 + 2,15

The difference, for each of the three channels, between the actual transmitter output power averaged over the 8 measurement orientations and the received transmitter output power at orientation n = 0 is used to scale the received measurement results to actual transmitter output powers for all measured power control levels and ARFCN, which can then be checked against the requirements.

c) Temporary antenna connector calibration factors (transmit).

A modified test sample equipped with a temporary antenna connector is placed in a climatic test chamber and is linked to the SS by means of the temporary antenna connector.

Under normal test conditions, the power measurement and calculation parts of steps a) to i) of 13.3.4.1.2 are repeated except that the repeats at step d) are only performed for power control level 10 and the minimum nominal output power level supported by the MS.

NOTE 1: The values noted here are related to the output transmitter carrier power levels under normal test conditions, which are known after step b). Therefore frequency dependent calibration factors that account for the effects of the temporary antenna connector can be determined.

d) Measurements at extreme test conditions.

NOTE 2: Basically the procedure for extreme conditions is:

– the power/time template is tested in the "normal" way;

– the radiated power is measured by measuring the difference with respect to the radiated power under normal test conditions.

Under extreme test conditions steps a) to i) of subclause 13.3.4.1.2 are repeated except that the repeats at step d) are only performed for power control level 10 and the minimum nominal output power level supported by the MS.

The transmitter output power under extreme test conditions is calculated for each burst type, power control level and for every frequency used by adding the frequency dependent calibration factor, determined in c), to the values obtained at extreme conditions in this step.

13.3.5 Test requirements

a) The transmitter output power, under every combination of normal and extreme test conditions, for normal bursts and access bursts, at each frequency and for each nominal output power level applicable to the MS power class, shall be at the relevant level shown in table 13-2, table 13-3 or table 13-4 within the tolerances also shown in table 13-2, table 13-3 or table 13-4.

Bands other than DCS 1800 and PCS 1900 – begin

Table 13-2: Bands other than DCS 1800 and PCS 1900 transmitter output power for different power classes

Power class

Power control level (note2)

Transmitter output power

Tolerances

2

3

4

5

dBm

normal

extreme

2

39

2 dB

±2,5 dB

3

37

±3 dB (note1)

±4 dB (note1)

4

35

±3 dB

±4 dB

5

33

±3 dB (note1)

±4 dB (note1)

6

31

±3 dB

±4 dB

7

29

±3 dB (note1)

±4 dB (note1)

8

27

±3 dB

±4 dB

9

25

±3 dB

±4 dB

10

23

±3 dB

±4 dB

11

21

±3 dB

±4 dB

12

19

±3 dB

±4 dB

13

17

±3 dB

±4 dB

14

15

±3 dB

±4 dB

15

13

±3 dB

±4 dB

16

11

±5 dB

±6 dB

17

9

±5 dB

±6 dB

18

7

±5 dB

±6 dB

19

5

±5 dB

±6 dB

NOTE1: When the power control level corresponds to the power class of the MS, then the tolerances shall be 2,0 dB under normal test conditions and 2,5 dB under extreme test conditions.

NOTE2: There is no requirement to test power control levels 20-31

Bands other than DCS 1800 and PCS 1900 – end

DCS 1 800 only – begin

Table 13-3: DCS 1 800 transmitter output power for different power classes

Power class

Power control level (note2)

Transmitter output power

Tolerances

1

2

3

dBm

normal

extreme

29

36

±2,0 dB

±2,5 dB

30

34

±3,0 dB

±4,0 dB

31

32

±3,0 dB

±4,0 dB

0

30

±3,0 dB (note1)

±4 dB (note1)

1

28

±3 dB

±4 dB

2

26

±3 dB

±4 dB

3

24

±3 dB (note1)

±4 dB (note1)

4

22

±3 dB

±4 dB

5

20

±3 dB

±4 dB

6

18

±3 dB

±4 dB

7

16

±3 dB

±4 dB

8

14

±3 dB

±4 dB

9

12

±4 dB

±5 dB

10

10

±4 dB

±5 dB

11

8

±4 dB

±5 dB

12

6

±4 dB

±5 dB

13

4

±4 dB

±5 dB

14

2

±5 dB

±6 dB

15

0

±5 dB

±6 dB

NOTE1: When the power control level corresponds to the power class of the MS, then the tolerances shall be 2,0 dB under normal test conditions and 2,5 dB under extreme test conditions.

NOTE2: There is no requirement to test power control levels 16-28

DCS 1 800 only – end

PCS 1 900 only – begin

Table 13-4: PCS 1 900 transmitter output power for different power classes

Power class

Power control level (note2)

Transmitter output power

Tolerances

1

2

3

dBm

Normal

Extreme

30

33

±2,0 dB

±2,5 dB

31

32

±2,0 dB

±2,5 dB

0

30

±3,0 dB (note1)

±4 dB (note1)

1

28

±3 dB

±4 dB

2

26

±3 dB

±4 dB

3

24

±3 dB (note1)

±4 dB (note1)

4

22

±3 dB

±4 dB

5

20

±3 dB

±4 dB

6

18

±3 dB

±4 dB

7

16

±3 dB

±4 dB

8

14

±3 dB

±4 dB

9

12

±4 dB

±5 dB

10

10

±4 dB

±5 dB

11

8

±4 dB

±5 dB

12

6

±4 dB

±5 dB

13

4

±4 dB

±5 dB

14

2

±5 dB

±6 dB

15

0

±5 dB

±6 dB

NOTE1: When the power control level corresponds to the power class of the MS, then the tolerances shall be 2,0 dB under normal test conditions and 2,5 dB under extreme test conditions.

NOTE2: There is no requirement to test power control levels 16-29

PCS 1 900 only – end

b) The difference between the transmitter output power at two adjacent power control levels, measured at the same frequency, shall not be less than 0,5 dB and not be more than 3,5 dB. For PCS 1 900 Class 3 the difference between the transmitter output power at power controls level 30 and 31, measured at the same frequency, shall not be less than 0 dB and not be more than 2 dB.

c) The power/time relationship of the measured samples for normal bursts shall be within the limits of the power time template of figure 13-1 at each frequency, under every combination of normal and extreme test conditions and at each power control level measured.

+4 dBc ┌───┐_

+1,0 dBc │ └─────────────/ /──────────────────┐

0 dBc │ │

-1,0 dBc │ ┌─────────────/ /──────────────┐ │

-6 dBc * ┌──┘ │ │ └──┐

-30 dBc ** ┌───┘ │ │ └───┐

│ │ │ │

lowest limit ─┘ │ │ └

(see      │<——– (147 bits) ——–>│

table -5) └─────────────────────────/ /─────────────────────────────

10 8 10 7056/13=542,8 ms 10 8 10

Figure 13-1: Power / time template for normal bursts

* For MS supporting bands other than DCS 1800 and PCS 1900:

-4 dBc for power control level 16;

-2 dBc for power control level 17;

-1 dBc for power control levels 18 and 19.

For DCS 1 800 and PCS 1 900 MS:

-4 dBc for power control level 11;

-2 dBc for power control level 12;

-1 dBc for power control levels 13, 14 and 15.

** For MS supporting bands other than DCS 1800 and PCS 1900:

-30 dBc or -17 dBm, whichever is the higher.

For DCS 1 800 and PCS 1 900 MS:

-30 dBc or -20 dBm, whichever is the higher.

Table 13-5: Lowest measurement limit for power / time template

lowest limit

Bands other than DCS 1800 and PCS 1900

-59 dBc or -54 dBm whichever is the highest, except for the timeslot preceding the active slot, for which the allowed level is equal to -59 dBc or -36 dBm, whichever is the highest

DCS 1 800,

PCS 1 900

-48 dBc or -48 dBm whichever is the highest

d) All the power control levels, for the type and power class of the MS as stated by the manufacturer, shall be implemented in the MS.

e) When the transmitter is commanded to a power control level outside of the capability corresponding to the type and power class of the MS as stated by the manufacturer, then the transmitter output power shall be within the tolerances for the closest power control level corresponding to the type and power class as stated by the manufacturer.

f) The centre of the transmitted normal burst as defined by the transition of bits 13/14 of the midamble shall be 3 timeslot periods (1 731 s) ±1 bit period (±3,69 s) after the centre of the corresponding received burst.

g) The power/time relationship of the measured samples for access bursts shall be within the limits of the power time template of figure 13-2 at each frequency, under every combination of normal and extreme test conditions and at each power control level measured.

+4 dBc ┌───┐

+1,0 dBc │ └─────────/ /──────────────┐

0 dBc │ │

-1,0 dBc │ ┌─────────/ /──────────┐ │

-6 dBc * │ ┌──┘ │ │ └──┐

-30 dBc ** ┌───┘ │ │ └───┐

│ │ │ │

lowest limit─┘ │ │ └

(see table -5) │<—- (87 bits) —–>│

└──────────────────────/ /─────────────────────-

10 8 10 4176/13=321,2 ms 10 8 10

Figure 13-2: Power / time template for access burst

* For MS supporting bands other than DCS 1800 and PCS 1900:

-4 dBc for power control level 16;

-2 dBc for power control level 17;

-1 dBc for power control levels 18 and 19.

For DCS 1 800 and PCS 1 900 MS:

-4 dBc for power control level 11;

-2 dBc for power control level 12;

-1 dBc for power control levels 13, 14 and 15.

** For MS supporting bands other than DCS 1800 and PCS 1900:

-30 dBc or -17 dBm, whichever is the higher.

For DCS 1 800 and PCS 1 900 MS:

-30 dBc or -20 dBm, whichever is the higher.

h) The centre of the transmitted access burst shall be an integer number of timeslot periods less 30 bit periods relative to any CCCH midamble centre with a tolerance of ±1 bit period (±3,69 s).

i) For MS supporting RACH Power Reduction conformance requirement 11 has to be met, where the MS shall apply power reduction for the first transmission of the access burst on the RACH (test procedure 13.3.4.1.2 step j). The corresponding power control level after power reduction determines the output power tolerances.

j) For MS supporting RACH Power Reduction conformance requirement 11 has to be met, where the MS shall not apply power reduction for DCH or TCH when receiving a valid power control command by L3 message (test procedure 13.3.4.1.2 step k).

k) For MS supporting RACH Power Reduction conformance requirement 11 has to be met, when the second transmission of an access burst is answered the MS shall not apply power reduction (test procedure 13.3.4.1.2 step l).