13.17.3 EGPRS Transmitter output power

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

13.17.3.1 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.

Since the conformance requirement, test procedure and test requirement of GSMK modulated signal’s output power are defined in subclause 13.16.2 for GPRS MS, being thereby defined also for all EGPRS MS in that section, only 8PSK modulated signal’s output power conformance requirement, test procedure and test requirements are defined in this subclause.

13.17.3.2 Conformance requirement

1. The MS maximum output power for 8-PSK modulated signal shall be as defined in 3GPP TS 05.05, subclause 4.1.1, second table, according to its power class, with a tolerances of ±2 dB, ±3 dB, +3/-4 dB defined under normal conditions in the 3GPP TS 05.05, subclause 4.1.1, second table. From R99 onwards, the MS maximum output power in an uplink multislot configuration shall be as defined in 3GPP TS 05.05 subclause 4.1.1, sixth table, according to its power class, with a tolerance of ±3 dB under normal conditions; 3GPP TS 05.05, subclause 4.1.1, second and sixth table. In case the MS supports the same maximum output power in an uplink multislot configuration as it supports for single slot uplink operation, the tolerance shall be ±2 dB.

2. The MS maximum output power for 8-PSK modulated signal shall be as defined in 3GPP TS 05.05, subclause 4.1.1, second table, according to its power class, with a tolerances of ±2,5 dB, ±4 dB, +4/-4,5 dB defined under extreme conditions in the 3GPP TS 05.05, subclause 4.1.1, second table. From R99 onwards, the MS maximum output power in an uplink multislot configuration shall be as defined in 3GPP TS 05.05 subclause 4.1.1, sixth table, according to its power class, with a tolerance of ±4 dB under extreme conditions; 3GPP TS 05.05, subclause 4.1.1, second and sixth table; 3GPP TS 05.05 annex D in subclauses D.2.1 and D.2.2. In case the MS supports the same maximum output power in an uplink multislot configuration as it supports for single slot uplink operation, the tolerance shall be ±2,5 dB.

3. The power control levels for 8-PSK shall have the nominal output power levels as defined in 3GPP TS 05.05, subclause 4.1.1, third table (for GSM 400, GSM 700, GSM 850 and GSM 900), fourth table (for DCS 1 800) or fifth table (for PCS 1 900), 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 requirement 1), with a tolerance of ±2 dB,±3 dB, 4 dB or 5 dB under normal conditions; 3GPP TS 05.05, subclause 4.1.1, third, fourth or fifth table.

4. The power control levels for 8-PSK shall have the nominal output power levels as defined in 3GPP TS 05.05, subclause 4.1.1, third table (for GSM 400, GSM 700, GSM 850 and GSM 900), fourth table (for DCS 1 800) or fifth table (for PCS 1 900), 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 ±2,5 dB, ±4 dB, 5 dB or 6 dB under extreme conditions; 3GPP TS 05.05, subclause 4.1.1, third, fourth or fifth table; 3GPP TS 05.05 annex D subclauses D.2.1 and D.2.2.

4a. From R99 onwards, the supported maximum output power for each number of uplink timeslots shall form a monotonic sequence. The maximum reduction of maximum output power from an allocation of n uplink timeslots to an allocation of n+1 uplink timeslots shall be equal to the difference of maximum permissible nominal reduction of maximum output power for the corresponding number of timeslots, as defined in 3GPP TS 05.05, subclause 4.1.1, sixth table.

5. For 8-PSK, 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; 3GPP TS 05.05, subclause 4.1.1, from R99 onwards, in a multislot configuration, the first power control step down from the maximum output power is allowed to be in the range 0…2 dB

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 bottom figure for 8PSK modulated signal. In the case of Multislot Configurations where the bursts in two or more consecutive time slots are actually transmitted at the same frequency, the template of annex B shall be respected during the useful part of each burst and at the beginning and the end of the series of consecutive bursts. The output power during the guard period between every two consecutive active timeslots shall not exceed the level allowed for the useful part of the first timeslot, or the level allowed for the useful part of the second timeslot plus 3 dB, whichever is the highest.

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 subclauses D.2.1 and D.2.2.

On a multislot uplink configuration the MS may restrict the interslot output power control range to a 10 dB window, on a TDMA frame basis. On those timeslots where the ordered power level is more than 10 dB lower than the applied power level of the highest power timeslot, the MS shall transmit at a lowest possible power level within 10 dB range from the highest applied power level, if not transmitting at the actual ordered power level.

3GPP TS 45.05 subclause 2:

For T-GSM 810 the requirements for GSM 900 shall apply, apart for those parameters for which a separate requirement exists.

13.17.3.3 Test purpose

1. To verify that the maximum output power of the 8PSK modulated signal of the EGPRS MS, under normal conditions, is within conformance requirement 1.

2. To verify that the maximum output power of the 8PSK modulated signal of the EGPRS MS, under extreme conditions, is within conformance requirement 2.

3. To verify that the maximum output power of the 8-PSK modulated signal of the EGPRS MS capable of 8PSK multislot configuration in the uplink, under normal conditions, is within conformance requirement 1.

4. To verify that the maximum output power of the 8-PSK modulated signal of the EGPRS MS capable of 8PSK multislot configuration in the uplink, under extreme conditions, is within conformance requirement 2.

4a. From R99 onwards: to verify that the supported maximum output power for each uplink multislot configuration is within the conformance requirement 4a.

5. To verify that all nominal output power levels, relevant to the power class of the EGPRS MS for 8PSK modulation, are implemented in the MS and have output power levels, under normal conditions, within conformance requirement 3.

6. To verify that all nominal output power levels, relevant to the power class of the EGPRS MS for 8PSK modulation, are implemented in the MS capable of 8PSK multislot configuration in the uplink and have the output power levels, under normal conditions, within conformance requirement 3.

7. To verify that all nominal output power levels, relevant to the power class of the EGPRS MS for 8PSK modulation, have output power levels, under extreme conditions, within conformance requirement 4.

8. To verify that all nominal output power levels, relevant to the power class of the EGPRS MS for 8PSK modulation, have output power levels in 8PSK multislot configuration in the uplink, under extreme conditions, within conformance requirement 4.

9. To verify that the step in the output power transmitted by the EGPRS MS at consecutive power control levels for 8PSK modulated signals is within conformance requirement 5 under normal conditions.

10. To verify that the step in the output power transmitted by the EGPRS MS capable of multislot 8PSK configuration in the uplink at consecutive power control levels for 8PSK modulated signals is within conformance requirement 5.

11. To verify that the output power relative to time, when sending a normal burst of the 8-PSK modulated signal is within conformance requirement 6:

11.1 Under normal conditions.

11.2 Under extreme conditions.

12. To verify that the output power relative to time, when sending a normal burst of 8PSK modulated signal is within conformance requirement 6 for EGPRS MS capable of 8PSK multislot configuration in the uplink:

12.1 Under normal conditions.

12.2 Under extreme conditions.

NOTE: For EGPRS MS capable of 8PSK multislot configuration in the uplink, the tests are executed only for multislot configuration.

13.17.3.4 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 ETS using the integral antenna. Further studies are ongoing on improved testing on the integral antenna, taking practical conditions of MS use into account.

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

13.17.3.4.1.1 Initial conditions

The test shall be run under the default EGPRS conditions defined in clause 50 with an ARFCN in the mid ARFCN range.

The Test Mode defined in 3GPP TS 04.14 subclause 5.4 shall be utilised. If the MS is capable of both:

Mode (a) transmitting pseudo-random data sequence in RLC data blocks;

Mode (b) transmitting looped-back RLC data blocks.

Then Mode (a) will be used. The SS orders the MS to transmit on the uplink with 8PSK modulation, on a mid range ARFCN, power control level set to Max power and MS to operate in its highest number of uplink slots.

The SS controls the power level by setting the concerned timeslot’s power control parameter ALPHA () to 0 and GAMMA_TN (CH) to the desired power level in the Packet Uplink Assignment or Packet Time Slot Reconfigure message (Closed Loop Control, see 3GPP TS 05.08, clause B.2) GPRS_ MS TXPWR_MAX_CCH / 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.

Specific PICS Statements:

– MS using reduced interslot dynamic range in multislot configurations (TSPC_AddInfo_Red_IntSlotRange_Mult_Conf).

– 8-PSK_MULTISLOT_POWER_PROFILE 0..3 (TSPC_Type_8-PSK_Multislot_Power_Profile_x)

PIXIT statements:

13.17.3.4.1.2 Test procedure

a) Measurement of normal burst transmitter output power

For 8PSK, power may be determined by applying the technique described for GMSK in subclause 13.16.2.4.1.2; step a) and then averaging over multiple bursts to achieve sufficient accuracy (see annex 5). Alternatively, an estimation technique based on a single burst which can be demonstrated to yield the same result as the long term average may be used. The long term average or the estimate of long term average is used as the 0dB reference for the power/time template.

b) 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 symbols and in power to the 0 dB reference, both identified in a).

c) Steps a) to b) are repeated on each timeslot within the multislot configuration with the MS commanded to operate on each of the nominal output power levels defined in tables 13.17.3-1, 13.17.3-2 and 13.17.3-3.

NOTE: Power control levels 0 and 1 are excluded for bands other than DCS 1800 and PCS 1900 since these power control levels can not be set by GAMMA_TN.

d) The SS commands the MS to the maximum power control level supported by the MS and steps a) to b) are repeated on each timeslot within the multislot configuration for ARFCN in the Low and High ranges.

e) The SS commands the MS to the maximum power control level in the first timeslot allocated within the multislot configuration and to the minimum power control level in the second timeslot allocated. Any further timeslots allocated are to be set to the maximum power control level. Steps a) to b) and corresponding measurements on each timeslot within the multislot configuration are repeated. This step is only applicable to MS which support more than one uplink time slot.

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

13.17.3.4.2 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 13.17.3.4.1 will be applied.

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

13.17.3.4.2.1 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.

The initial conditions for the MS are defined in subclause 13.17.3.4.1.1

13.17.3.4.2.2 Test procedure

a) With the initial conditions set according to subclause 13.17.3.4.2.1 the test procedure in subclause 13.17.3.4.1.2 is followed up to and including step e), 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 e) of subclause 13.17.3.4.1.2 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 e) of subclause 13.17.3.4.1.2 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.

13.17.3.5 Test requirements

a) The transmitter output power for the 8-PSK modulated signals, under every combination of normal and extreme test conditions, for normal bursts, at each frequency and for each power control level applicable to the MS power class, shall be at the relevant level shown in table 13.17.3-1 or table 13.17.3-2 within the tolerances also shown in table 13.17.3-1 or table 13.17.3-2.

b) Void

Bands other than DCS 1800 and PCS 1900 beginning

Table 13.17.3-1: Bands other than DCS 1800 and PCS 1900 transmitter output power for different power classes 8PSK Modulated Signals

Power class

Power control level (note 3)

GAMMA_TN (CH)

Transmitter output power

(note 1,2)

Tolerances

E1

E2

E3

·

2-5

0-3

33

±2 dB

±2.5dB

6

4

31

±3 dB

±4 dB

7

5

29

±3 dB

±4 dB

·

8

6

27

±3 dB

±4 dB

·

9

7

25

±3 dB

±4 dB

·

·

10

8

23

±3 dB

±4 dB

·

·

11

9

21

±3 dB

±4 dB

·

·

12

10

19

±3 dB

±4 dB

·

·

13

11

17

±3 dB

±4 dB

·

·

14

12

15

±3 dB

±4 dB

·

·

15

13

13

±3 dB

±4 dB

·

·

16

14

11

±5 dB

±6 dB

·

·

17

15

9

±5 dB

±6 dB

·

·

18

16

7

±5 dB

±6 dB

·

·

19

17

5

±5 dB

±6 dB

NOTE 1: For R99 and Rel-4, the maximum output power in a multislot configuration must be lower within the limits defined in table 13.17.3-1a. From Rel-5 onwards, the maximum output power in a multislot configuration may be lower within the limits defined in table 13.17.3-1b.

NOTE 2: For a MS using reduced interslot dynamic range in multislot configurations, the MS may restrict the interslot output power control range to a 10 dB window, on a TDMA frame basis. On those timeslots where the ordered power level is more than 10 dB lower than the applied power level of the highest power timeslot, the MS shall transmit at a lowest possible power level within 10 dB range from the highest applied power level, if not transmitting at the actual ordered power level.

NOTE 3: There is no requirement to test power control levels 20-31.

Table 13.17.3-1a: R99 and Rel-4: Bands other than DCS 1800 and PCS 1900 allowed maximum output power reduction in a multislot configuration

Number of timeslots in uplink assignment

Permissible nominal reduction of maximum output power, (dB)

1

0

2

0 to 3,0

3

1,8 to 4,8

4

3,0 to 6,0

Table 13.17.3-1b: From Rel-5 onwards: Bands other than DCS 1800 and PCS 1900 allowed maximum output power reduction in a multislot configuration

Number of timeslots in uplink assignment

Permissible nominal reduction of maximum output power, (dB)

1

0

2

3,0

3

4,8

4

6,0

5

7,0

6

7,8

7

8,5

8

9,0

From R5 onwards, the actual supported maximum output power shall be in the range indicated by the parameter 8‑PSK_MULTISLOT_POWER_PROFILE for n allocated uplink timeslots:

a  MS maximum output power  min(MAX_PWR, a + 2dB)

Where:

a = min (MAX_PWR, MAX_PWR + 8‑PSK _MULTISLOT_POWER_PROFILE – 10log(n));

MAX_PWR equals to the MS maximum output power according to the relevant power class and

8‑PSK_MULTISLOT_POWER_PROFILE 0 = 0 dB;

8‑PSK_MULTISLOT_POWER_PROFILE 1 = 2 dB;

8‑PSK_MULTISLOT_POWER_PROFILE 2 = 4 dB;

8‑PSK_MULTISLOT_POWER_PROFILE 3 = 6 dB.

Bands other than DCS 1800 and PCS 1900 – end

DCS 1 800 and PCS 1 900 – beginning

Table 13.17.3-2: DCS 1 800 and PCS 1 900 transmitter output power
for different power classes 8-PSK Modulated Signals

Power class

Power control level (note 3)

GAMMA_TN (CH)

Transmitter output power

(note 1,2)

Tolerances

E1

E2

E3

NORMAL

EXTREME

·

29,0 *)

0-3 **)

30

±3 dB(note 4)

±4dB(note 4)

1

4

28

±3 dB

±4 dB

·

2

5

26

±3 dB(note 4)

±4 dB(note 4)

·

3

6

24

±3 dB

±4 dB

·

·

4

7

22

±3 dB

±4 dB

·

·

5

8

20

±3 dB

±4 dB

·

·

6

9

18

±3 dB

±4 dB

·

·

7

10

16

±3 dB

±4 dB

·

·

8

11

14

±4 dB

±4 dB

·

·

9

12

12

±4 dB

±5 dB

·

·

10

13

10

±4 dB

±5 dB

·

·

11

14

8

±4 dB

±5 dB

·

·

12

15

6

±4 dB

±5 dB

·

·

13

16

4

±5 dB

±5 dB

·

·

14

17

2

±5 dB

±6 dB

·

·

15

18

0

±5 dB

±6 dB

*) 30-0 for PCS 1900 **) 1-3 for PCS 1900

NOTE 1: For R99 and Rel-4, the maximum output power in a multislot configuration must be lower within the limits defined in table 13.17.3-2a. From Rel-5 onwards, the maximum output power in a multislot configuration may be lower within the limits defined in table 13.17.3-2b.

NOTE 2: For a MS using reduced interslot dynamic range in multislot configurations, the MS may restrict the interslot output power control range to a 10 dB window, on a TDMA frame basis. On those timeslots where the ordered power level is more than 10 dB lower than the applied power level of the highest power timeslot, the MS shall transmit at a lowest possible power level within 10 dB range from the highest applied power level, if not transmitting at the actual ordered power level.

NOTE 3: There is no requirement to test power control levels 16-28.

NOTE 4: 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 for a class E1 mobile. For a class E2 mobile the tolerances shall be -4/+3 under normal test conditions and -4,5/+4 dB under extreme test conditions.

Table 13.17.3-2a: R99 and Rel-4: DCS 1 800 and PCS 1 900 allowed maximum output power reduction in a multislot configuration

Number of timeslots in uplink assignment

Permissible nominal reduction of maximum output power, (dB)

1

0

2

0 to 3,0

3

1,8 to 4,8

4

3,0 to 6,0

Table 13.17.3-2b: From Rel-5 onwards: DCS 1 800 and PCS 1 900 allowed maximum output power reduction in a multislot configuration

Number of timeslots in uplink assignment

Permissible nominal reduction of maximum output power, (dB)

1

0

2

3,0

3

4,8

4

6,0

5

7,0

6

7,8

7

8,5

8

9,0

From R5 onwards, the actual supported maximum output power shall be in the range indicated by the parameter 8‑PSK_MULTISLOT_POWER_PROFILE for n allocated uplink timeslots:

a  MS maximum output power  min(MAX_PWR, a + 3dB)

Where:

a = min (MAX_PWR, MAX_PWR + 8‑PSK _MULTISLOT_POWER_PROFILE – 10log(n));

MAX_PWR equals to the MS maximum output power according to the relevant power class and

8‑PSK_MULTISLOT_POWER_PROFILE 0 = 0 dB;

8‑PSK_MULTISLOT_POWER_PROFILE 1 = 2 dB;

8‑PSK_MULTISLOT_POWER_PROFILE 2 = 4 dB;

8‑PSK_MULTISLOT_POWER_PROFILE 3 = 6 dB.

DCS 1 800 and PCS 1 900 – end

c) 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 R99 and Rel-4, if one or both of the adjacent output power levels are reduced according to the number of timeslots, the difference between the transmitter output power at two adjacent power control levels, measured at the same frequency, shall not be less than -1dB and not be more than 3.5 dB.

From Rel-5 onwards, if one or both of the adjacent output power levels are reduced according to 8PSK_MULTISLOT_POWER_PROFILE X and the number of timeslots, the difference between the transmitter output power at two adjacent power control levels, measured at the same frequency, shall not be less than -1dB and not be more than 3.5 dB

d) The power/time relationship of the measured samples for normal bursts shall be within the limits of the power time template of figure 13.17.3-1for 8-PSK at each frequency, under every combination of normal and extreme test conditions and at each power control level measured.

Figure 13.17.3-1: Time mask for normal duration bursts (NB) at 8-PSK modulation

e) 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.

f) 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.

Table 13.17.3-3: Lowest measurement limit for power / time template

(*)

For bands other than DCS 1800 and PCS 1900 MS

:

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

For DCS 1 800 MS and PCS 1 900 MS

:

-48 dBc or -48 dBm, whichever is the higher.

:

no requirement below -30 dBc (see subclause 4.5.1).

(***)

For bands other than DCS 1800 and PCS 1900 MS

:

-4 dBc for power control level 16;

-2 dBc for power level 17;

-1 dBc for power level controls levels 18 and 19.

For DCS 1 800 and PCS 1900 MS

-4dBc for power control level 11,

-2dBc for power level 12,

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

(**)

For bands other than DCS 1800 and PCS 1900 MS

:

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

For DCS 1 800 and PCS 1900 MS

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