22 Transmit power control timing and confirmation

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

Unless otherwise specified all tests in clauses 22.1 to 22.10 are applicable for all MSs supporting the bands referred to in clause 1.

22.1 Transmit power control timing and confirmation, single slot

22.1.1 Definition

The RF power level to be employed by the MS is indicated by means of the 5 bit TXPWR field sent in the layer 1 header of each downlink SACCH message block and may be sent in a dedicated signalling block.

When a power change is signalled the MS must change its power control level to the new level at a certain rate of change.

The MS shall confirm the power level that it is currently employing by setting the MS_TXPWR_CONF field in the uplink SACCH L1 header.

22.1.2 Conformance requirement

1. The RF power control level to be employed by the MS is indicated by means of the power control information sent in the layer 1 header of each downlink SACCH message block and may be sent in a dedicated signalling block; 3GPP TS 05.08, subclause 4.2.

2. The MS shall confirm the power level that it is currently employing in the uplink SACCH L1 header. The indicated value shall be the power control level actually used by the MS for the last burst of the previous SACCH period; 3GPP TS 05.08, subclause 4.2.

3. Upon receipt of a command on the SACCH to change its RF power level, the MS shall change to the new level at a rate of one nominal 2 dB power control step every 60 ms; 3GPP TS 05.08, subclause 4.7.

4. The change (in conformance requirement 3) shall commence at the first TDMA frame belonging to the next reporting period; 3GPP TS 05.08, subclause 4.7.

5. In case of channel change the commanded power level shall be applied on the new channel immediately; 3GPP TS 05.08, subclause 4.7.

22.1.3 Test purpose

1. To verify that the MS will set its transmitter output power in accordance with conformance requirement 1.

2. To verify that the MS will confirm the power level it is currently employing according to conformance requirement 2.

3. To verify that the MS, upon receipt of a command from the SACCH to change its RF power level, will change according to conformance requirement 3.

4. To verify that the MS will commence the change of power level at least by the sixth TDMA frame belonging to the next reporting period.

5. To verify that in case of new channel assignment the commanded power level is applied on the new channel according to conformance requirement 5.

22.1.4 Method of test

NOTE: The method of measuring the MS transmitter output power is given in subclause 13.3.

22.1.4.1 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 (see table 3.3), power control level set to maximum power.

22.1.4.2 Procedure

a) The SS signals minimum power control level to the MS in the SACCH.

b) The SS measures the MS transmitter output power on TDMA frames 6, 19, 32 and every subsequent 13th TDMA frame to TDMA frame 214. The SS also monitors the MS_TXPWR_CONF field in the uplink SACCH L1 header for the four SACCH multiframes after the SS signals the power change.

c) The SS now sets TXPWR in the SACCH to the maximum peak power appropriate to the class of the MS.

d) The SS measures the MS transmitter output power on TDMA frames 6, 19, 32 and every subsequent 13th TDMA frame to TDMA frame 214. The SS also monitors the MS_TXPWR_CONF field in the uplink SACCH L1 header for the four SACCH multiframes after the SS signals the power change.

e) The SS now sets the SACCH TXPWR to 8.

f) After 3 s the SS sets the SACCH TXPWR to 9.

g) The SS measures the MS transmitter output power on TDMA frame 6.

h) The SS sets the SACCH TXPWR to 8.

i) The SS measures the MS transmitter output power on TDMA frame 6.

j) The channel assignment is changed and the demanded power within the channel assignment is set to the minimum power control level of the MS.

k) When the MS has changed channel its output power is measured on the first burst on the new channel.

22.1.5 Test requirements

NOTE: Refer to tables 13-2, 13-3 and 13-4 for relationship between the power class, power control level, transmitter output power and the relevant tolerances.

a) In steps b) and d), the transmitter output power shall change by one power step towards the new level signalled for each measured burst until the MS is operating at the closest supported power control level and from then on, all transmissions shall be at that level.

b) In steps b) and d), the value of the MS_TXPWR_CONF field in the uplink SACCH L1 header shall correspond to the actual power control level used for the last transmitted burst of the previous SACCH multiframe. The first one shall indicate the initial transmitted power control level, the subsequent ones shall change by 8 each time until the final power control level has been reached in which case that value shall be indicated.

c) In steps g) and i) the transmitter output power of TDMA frame 6 shall correspond to the new commanded power control level.

d) In step k) the MS output power, measured on the new channel shall correspond to the power control level in the channel assignment.

22.2 Void

22.3 GPRS Uplink Power Control – Use of  and CH parameters

22.3.1 Definition

Power control is important for spectrum efficiency as well as for power consumption in a cellular system. Power control for a packet oriented connection is more complicated than for a circuit switched connection, since there is no continuous two-way connection.

The RF output power, PCH , to be employed by the MS on each individual uplink PDCH shall be:

PCH = min(0 – CH –   (C + 48), PMAX),

Where:

CH is an MS and channel specific power control parameter, sent to the MS in an RLC control message (see 3GPP TS 04.60).

0 = 36 dBm for DCS 1 800 and PCS 1900
= 39 dBm for all other bands.

 is a system parameter, broadcast on PBCCH or optionally sent to MS in an RLC control message (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60).

C is the normalised received signal level at the MS as defined in 3GPP TS 05.08, subclause 10.2.3.1.

PMAX is the maximum allowed output power in the cell =
GPRS_MS_TXPWR_MAX_CCH if PBCCH exists
MS_TXPWR_MAX_CCH otherwise

All power values are expressed in dBm. (Note that the constants 0 and 48 are included only for optimising the coding of CH and C-value).

This is a flexible tool that can be used for different power control algorithms.

A pure open loop is achieved by setting  = 1 and keeping CH constant. With this method the output power is based on the received signal level assuming the same path loss in uplink and downlink. This is useful in the beginning of a packet transmission.

A pure closed loop is achieved by setting  = 0. With this method the output power is commanded by the network based on received signal level measurements made in the BTS in a similar way as for a circuit switched connection.

22.3.2 Conformance requirement

The MS shall use the same output power on all four bursts within one radio block. 3GPP TS 05.08, subclause 10.2.1.

If a calculated output power is not supported by the MS, the MS shall use the supported output power which is closest to the calculated output power. 3GPP TS 05.08, subclause 10.2.1.

When the MS receives new CH or  values, the MS shall use the new value to update PCH 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value. 3GPP TS 05.08, subclause 10.2.1.

The transmitted power shall be a monotonic function of the calculated output power and any change of 2 dB in the calculated value shall correspond to a change of 2 1,5 dB in the transmitted value. The MS may round the calculated output power to the nearest nominal output power value. 3GPP TS 05.08, subclause 10.2.1.

22.3.3 Test purpose

To verify the MS uses that the same output power on all four bursts of a radio block under normal conditions.

To verify that the highest power supported by the MS is used if the calculated power is greater.

To verify that the MS applies new CH or  values 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value.

To verify that any change of 2 dB in the calculated power corresponds to a change of 2 1,5 dB in the transmitted value under normal conditions.

NOTE: For changes in calculated power which are less than the tolerances specified for absolute power accuracy in a MS, the transmitted power as a function of calculated power cannot be tested for monotonicity. Monotonicity between power control steps is implicitly tested in subclause 13.16.

22.3.4 Method of test

22.3.4.1 Initial conditions

The SS establishes a BCCH, and optionally a PBCCH on the same carrier, in the mid ARFCN range. GPRS_MS_TXPWR_MAX_CCH is set to the maximum level (39 dBm for GSM and 36 dBm for DCS and PCS). The CH value is set such that (0 – CH) equals the maximum power control level supported by the Power Class of the MS under test. The  value is set to 0.

The SS establishes a downlink TBF on the same ARFCN as the BCCH and PBCCH, and send data blocks to poll the MS for channel quality reports. The downlink power level is adjusted until a stable RXLEV-value of 58 is reported by the MS in the channel quality report (see 3GPP TS 05.08, subclause 8.1.4 and 10.2.3) – corresponding to a used C value in the range of -52dBm to -53dBm.

MS shall transmit on the uplink. This is achieved using the GPRS test mode by transmitting a GPRS_TEST_MODE_CMD (see 3GPP TS 04.14, subclause 5.4).

22.3.4.2 Procedure

a) The SS shall trigger a transmitter output power measurement on each of the four bursts of any radio block.

The method of power measurement is described in subclause 13.16.

b) The SS shall modify the CH value such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands). If the transmission of the RLC control message containing the new CH value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

c) The SS shall modify the CH value such that (0 – CH) equals the maximum power control level supported by the power class of the MS under test. If the transmission of the RLC control message containing the new CH value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

d) The SS shall modify the CH value such that (0 – CH) equals the value 5dB below the maximum power control level supported by the power class of the MS under test. The  value is set to 1.

e) The SS shall decrement the  value with a step size of 0.1 until  equals 0. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

f) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step e). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

NOTE: If the power values measured for the four bursts of the radio block with  equal to 1.0 are:

– Pm0 ,Pm1, Pm2, Pm3.

And, the power values measured for the four bursts of the radio block with  equal to 0.5 are:

– Pn0 ,Pn1, Pn2, Pn3.

Then:

– Pm(max) = MAX(Pm0 ,Pm1, Pm2, Pm3);

– Pm(min) = MIN(Pm0 ,Pm1, Pm2, Pm3);

– Pn(max) = MAX(Pn0 ,Pn1, Pn2, Pn3);

– Pn(min) = MIN(Pn0 ,Pn1, Pn2, Pn3).

The maximum and minimum step sizes are:

– STEP(MAX)= Pm(max) – Pn(min);

– STEP(MIN) = Pm(min) – Pn(max).

g) The SS shall modify the CH value such that (0 – CH) equals the midrange power control level supported by the MS under test. The  value is set to 0.

h) The SS shall increment the  value with a step size of 0.1 until  equals 1. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

i) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step h). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

j) The SS shall modify the CH value such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands). The  value is set to 0.

k) The SS shall increment the  value with a step size of 0.1 until  equals 1. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

l) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step k). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

22.3.5 Test requirements

1. The power of all four bursts within the radio block measured in step a) and c) shall be within the accuracies specified for the power class of the mobile under test, as indicated in the following table.

Power

class

Bands other than DCS 1 800 and PCS 1 900 Nominal Maximum output power

DCS 1 800

Nominal Maximum output power

PCS 1900

Nominal Maximum output power

Tolerance (dB)

for normal conditions

1

‑ ‑ ‑ ‑ ‑ ‑

1 W (30 dBm)

1 W (30dBm)

±2

2

8 W (39 dBm)

0,25 W (24 dBm)

0,25 W (24 dBm)

±2

3

5 W (37 dBm)

4 W (36 dBm)

2 W (33 dBm)

±2

4

2 W (33 dBm)

±2

5

0,8 W (29 dBm)

±2

2. The power of all four bursts within the radio block measured in step b) shall be 0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands with an accuracy of 5 dB in both cases.

3. In steps f), i) and l), the maximum change in transmitted power between each identified pair of  values shall be ≤ 4,5 dB for either set1 or set2.

4. In steps f), i) and l), the minimum change in transmitted power between each identified pair of  values shall be ≥ ‑0,5 dB for either set1 or set2.

Note: 1 dB tolerance is to be included in test requirements 3. and 4.
The same alpha value set (either set1 or set2) shall be used in all the steps f), i) and l) and for both test requirements 3. and 4.

22.4 GPRS Uplink Power Control – Independence of TS Power Control

22.4.1 Definition

22.4.2 Conformance requirement

For a GPRS multislot MS supporting 2 or more uplink PDCHs, power control shall be employed by the MS on each individual uplink PDCH. 3GPP TS 05.08, subclause 10.2.1.

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 45.005, subclause 4.1.1.

22.4.3 Test purpose

To verify that for a GPRS multislot MS supporting 2 or more uplink PDCHs, power control shall be employed by the MS on each individual uplink PDCH.

22.4.4 Method of test

22.4.4.1 Initial conditions

The MS shall transmit on the uplink with the maximum number of TS for the multislot class of the MS.. This is achieved using the GPRS test mode by first establishing a downlink TBF and transmitting a GPRS_TEST_MODE_CMD (see 3GPP TS 04.14, subclause 5.4). Each TS is transmitting on its maximum power. The ‑value is set to 0.

Specific PICS Statements:

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

PIXIT Statements:

22.4.4.2 Procedure

a) The SS shall modify the CH value of one TS such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands).

b) The SS shall trigger a transmitter output power measurement on each of the four bursts of any radio block of the TS under test.

c) The SS shall trigger a transmitter output power measurement on each of the four bursts of any radio block of the other active TS.

d) The SS shall modify the CH value for the TS under test such that (0 – CH) equals the maximum power control level supported by the MS under test.

e) Steps a) to d) shall be repeated for each TS of the multislot configuration.

22.4.5 Test requirements

1. The power of all four bursts within the radio block measured in step b) shall be 0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands with an accuracy of 5 dB in both cases. For an MS using reduced interslot dynamic range, the power measured in step b) shall be within 10dB ± 3dB of the average power of the timeslots measured in step c).

2. For all TS, the power of all four bursts within the radio block measured in step c) shall be within the accuracies specified for the power class of the mobile under test, as indicated in table 22.4-1 (see also 3GPP TS 45.005).

Table 22.4-1: The MS maximum output power

Power

class

Bands other than DCS 1 800 and PCS 1 900 Nominal Maximum output

power

DCS 1 800

Nominal Maximum output power

PCS 1900

Nominal Maximum output power

Tolerance (dB)

for normal

conditions

1

‑ ‑ ‑ ‑ ‑ ‑

1 W (30 dBm)

1 W (30dBm)

±2

2

8 W (39 dBm)

0,25 W (24 dBm)

0,25 W (24 dBm)

±2

3

5 W (37 dBm)

4 W (36 dBm)

2 W (33 dBm)

±2

4

2 W (33 dBm)

±2

5

0,8 W (29 dBm)

±2

From R99 onwards, in order to manage mobile terminal heat dissipation resulting from transmission on multiple uplink timeslots, the mobile station shall reduce its maximum output power on a per-assignment basis by the values given in table 22.4-2 or 22.4-3:

Table 22.4-2: R99 and Rel-4 MS: 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 22.4-3: From Rel-5 onwards: 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 Rel-5 onwards, the actual supported maximum output power shall be in the range indicated by the parameters GMSK_MULTISLOT_POWER_PROFILE (See 3GPP TS 24.008) for n allocated uplink timeslots:

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

Where:

a = min (MAX_PWR, MAX_PWR + GMSK_MULTISLOT_POWER_PROFILE – 10log(n));

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

GMSK_MULTISLOT_POWER_PROFILE 0 = 0 dB;
GMSK_MULTISLOT_POWER_PROFILE 1 = 2 dB;
GMSK_MULTISLOT_POWER_PROFILE 2 = 4 dB;
GMSK_MULTISLOT_POWER_PROFILE 3 = 6 dB.

For DCS 1800 and PCS 1900 frequency bands b = 3 dB, for all other bands b = 2 dB.

22.5 Void

22.6 Normal transmit power control timing and confirmation in ECSD

22.6.1 Definition

The RF power level to be employed by the MS is indicated by means of the 5 bit TXPWR field sent in the layer 1 header of each downlink SACCH message block and may be sent in a dedicated signalling block.

When a power change is signalled the MS must change its power control level to the new level at a certain rate of change.

The MS shall confirm the power level that it is currently employing by setting the MS_TXPWR_CONF field in the uplink SACCH L1 header.

22.6.2 Test conformance

1. The RF power control level to be employed by the MS is indicated by means of the power control information sent in the layer 1 header of each downlink SACCH message block and may be sent in a dedicated signalling block; 3GPP TS 05.08, subclause 4.2.

2. The MS shall confirm the power level that it is currently employing in the uplink SACCH L1 header. The indicated value shall be the power control level actually used by the MS for the last burst of the previous SACCH period; 3GPP TS 05.08, subclause 4.2.

3. Upon receipt of a command on the SACCH to change its RF power level, the MS shall change to the new level at a rate of one nominal 2 dB power control step every 60 ms; 3GPP TS 05.08, subclause 4.7.

4. The change (in conformance requirement 3) shall commence at the first TDMA frame belonging to the next reporting period; 3GPP TS 05.08, subclause 4.7.

5. In case of channel change the commanded power level shall be applied on the new channel immediately; 3GPP TS 05.08, subclause 4.7.

22.6.3 Test purpose

1. To verify that the MS will set its transmitter output power in accordance with conformance requirement 1.

2. To verify that the MS will confirm the power level it is currently employing according to conformance requirement 2.

3. To verify that the MS, upon receipt of a command from the SACCH to change its RF power level, will change according to conformance requirement 3.

4. To verify that the MS will commence the change of power level at least by the sixth TDMA frame belonging to the next reporting period.

5. To verify that in case of new channel assignment the commanded power level is applied on the new channel according to conformance requirement 5.

22.6.4 Test method

NOTE: The method of measuring the MS transmitter output power is given in subclause 13.3. For 8PSK modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3.

22.6.4.1 Initial conditions

A call is set up by the SS according to the generic call set up procedure for multislot configuration on a channel with ARFCN in the Mid ARFCN range (see table 3.3), power control level set to maximum power.

The SS commands the MS to operate in multislot configuration where it has highest possible number of Tx slots.

22.6.4.2 Procedure

If the MS supports both GMSK and 8PSK modulation on the uplink, the test is repeated with each modulation format.

a) The SS signals minimum power control level to the MS in the SACCH for one of the subchannels.

b) The SS measures the MS transmitter output power on TDMA frames 6, 19, 32 and every subsequent 13th TDMA frame to TDMA frame 214. The SS also monitors the MS_TXPWR_CONF field in the uplink SACCH L1 header for the four SACCH multiframes after the SS signals the power change.

c) The SS now sets TXPWR in the SACCH to the maximum peak power appropriate to the class of the MS.

d) The SS measures the MS transmitter output power on TDMA frames 6, 19, 32 and every subsequent 13th TDMA frame to TDMA frame 214. The SS also monitors the MS_TXPWR_CONF field in the uplink SACCH L1 header for the four SACCH multiframes after the SS signals the power change.

e) The SS now sets the SACCH TXPWR to 8.

f) After 3 s the SS sets the SACCH TXPWR to 9.

g) The SS measures the MS transmitter output power on TDMA frame 6.

h) The SS sets the SACCH TXPWR to 8.

i) The SS measures the MS transmitter output power on TDMA frame 6.

j) The channel assignment is changed and the demanded power within the channel assignment is set to the minimum power control level of the MS.

k) When the MS has changed channel its output power is measured on the first burst on the new channel.

l) Steps a) to k) are repeated on the next subchannel until each is tested.

22.6.5 Test requirement

NOTE: Refer to tables 13.17.3-1, 13.17.3-2, 13.17.3-3 and 13.17.3-4 for relationship between the power class, power control level, transmitter output power and the relevant tolerances.

a) In steps b) and d), the transmitter output power shall change by one power step towards the new level signalled for each measured burst until the MS is operating at the closest supported power control level and from then on, all transmissions shall be at that level.

b) In steps b) and d), the value of the MS_TXPWR_CONF field in the uplink SACCH L1 header shall correspond to the actual power control level used for the last transmitted burst of the previous SACCH multiframe. The first one shall indicate the initial transmitted power control level, the subsequent ones shall change by 8 each time until the final power control level has been reached in which case that value shall be indicated.

c) In steps g) and i) the transmitter output power of TDMA frame 6 shall correspond to the new commanded power control level.

d) In step k) the MS output power, measured on the new channel shall correspond to the power control level in the channel assignment.

22.7 ECSD Fast Power Control (FPC) timing and interworking with normal power control

22.7.1 Definition

Using the SACCH L1 header, normal uplink power control modifies the MS transmit power at a maximum rate of one power control level change per SACCH period (480ms). Under Fast Power Control the output power of an MS, in E‑TCH mode, is updated each fast power reporting period. There are 24 fast power reporting periods in a 104 frame SACCH period.

22.7.2 Test conformance

1. In the E-TCH mode, the MS shall, if so indicated by the BSS in the SACCH L1 header or Assignment command, use FPC (fast power control); 3GPP TS 05.08, subclause 4.2

2. Switching between the normal power control mechanism and FPC shall be done if FPC is enabled or disabled via signalling in the SACCH L1 header. The respective power control mechanism to be used shall then be active as from the first TDMA frame belonging to the next reporting period; 3GPP TS 05.08, subclause 4.7

3. The initial power control level to be used by the MS immediately after switching between normal and fast power control mechanisms shall, in both cases, be the level last commanded by the normal power control mechanism; 3GPP TS 05.08, subclause 4.7

4. The fast power control mechanism shall use the differential power control mechanism defined in the table of 3GPP TS 05.08, subclause 4.3

5. The MS shall employ the most recently commanded fast power control level on each uplink E-TCH channel; 3GPP TS 05.08, subclause 4.2

6. If a power control command is received but the requested output power is not supported by the MS, the MS shall use the supported output power which is closest to the requested output power; 3GPP TS 05.08, subclause 4.3

7. If FPC is in use, the MS shall report, in the SACCH L1 header, the power control level used at the end of the normal power control reporting period; 3GPP TS 05.08, subclause 4.2

8. In case of a multislot configuration, each bi‑directional channel shall be power controlled individually by the corresponding SACCH or fast inband signalling link, whichever is applicable; 3GPP TS 05.08, subclause 4.2

22.7.3 Test purpose

1. To verify that the MS switches between normal power control and fast power control mechanisms in accordance with conformance requirements 1 and 2.

2. To verify that the initial power control level used by the MS after switching between normal and fast power control mechanisms is in accordance with conformance requirement 3.

3. To verify that power level changes using the fast power control are implemented by the MS in accordance with conformance requirements 4 and 5.

4. To verify that power control commands requesting levels not supported by the MS are treated in accordance with conformance requirement 6.

5. To verify that the power reported by the MS at the end of the normal power control reporting period is in accordance with conformance requirement 7.

6. To verify that in a multislot configuration the MS implements fast power control independently on each bi-directional E-TCH in accordance with conformance requirement 8.

22.7.4 Test method

22.7.4.1 Initial conditions

A call is set up by the SS according to the generic call set up procedure for multislot configuration on a channel with ARFCN in the Mid ARFCN range (see table 3.3).

The SS commands the MS to operate in multislot configuration where it has the highest possible number of bi‑directional E-TCHs. Using normal power control, the level of each TX slot is set to maximum power.

22.7.4.2 Procedure

For the purpose of this test the SS shall randomly select one bi-directional E-TCH to exercise. All other E-TCHs shall maintain the state defined under the initial conditions. In this procedure these other E-TCHs are referred to as the active but unselected channels.

a) Using the normal power control mechanism, the SS shall command the MS to transmit at power level 8 in the case of DCS 1 800 and PCS 1 900 or power level 15 in the case of all other bands on the selected E-TCH. After 1s, a power measurement shall be made on each TX slot of the multislot configuration.

NOTE: The method of measuring the MS transmitter output power is given in subclause 13.3. For 8PSK modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3.

b) The SS shall command the MS to switch between the normal power control and the fast power control mechanism by means of the SACCH L1 header (see 3GPP TS 04.04). Each power control mechanism shall be maintained for a single SACCH period. This cycle shall be repeated until all power measurements specified in steps c) to h) have been completed.

During the SACCH periods when normal power control is active, the SS shall command the MS to maintain the power levels set in step a). During the SACCH period when Fast Power Control is active, the SS shall command the MS to follow the schedule of fast power control detailed in the table below.

FPC

Reporting

Period

Number

Fast Power Control Command

Nominal Output

Power during FPC

Reporting period

Bands other than DCS 1 800 and PCS 1 900

Nominal Output

Power during FPC Reporting Period

DCS 1 800 & PCS 1 900

Pn

0

1 Step Decrease

13 dBm

14 dBm

P0

1

1 Step Decrease

11 dBm

12 dBm

2

1 Step Decrease

9 dBm

10 dBm

3

1 Step Decrease

7 dBm

8 dBm

4

1 Step Decrease

5 dBm

6 dBm

5

1 Step Decrease

5 dBm

4 dBm

6

1 Step Decrease

5 dBm

2 dBm

7

1 Step Decrease

5 dBm

0 dBm

8

2 Step Increase

5 dBm

0 dBm

P34

9

2 Step Increase

9 dBm

4 dBm

10

2 Step Increase

13 dBm

8 dBm

11

2 Step Increase

17 dBm

12 dBm

12

2 Step Increase

21 dBm

16 dBm

13

2 Step Increase

Min (25 dBm, Pmax)

20 dBm

14

2 Step Increase

Min (29 dBm, Pmax)

Min (24 dBm, Pmax)

15

2 Step Increase

Min (33 dBm, Pmax)

Min (28 dBm, Pmax)

16

2 Step Decrease

Pmax

Pmax

P69

17

1 Step Increase

Pmax – 4 dB

Pmax – 4 dB

P73

18

2 Step Decrease

Pmax – 2 dB

Pmax – 2 dB

P78

19

3 Step Increase

Pmax – 6 dB

Pmax – 6 dB

P82

20

2 Step Decrease

Pmax

Pmax

P86

21

2 Step Decrease

Pmax – 4 dB

Pmax – 4 dB

P91

22

4 Step Increase

Pmax – 8 dB

Pmax – 8 dB

P95

23

No Change

Pmax

Pmax

P99

Pmax is the maximum power for the mobile class.

Pn values refer to the power measured in the nth frame of the SACCH period.

a) The SS shall make power measurements on each active, but unselected timeslot of the multislot configuration during frames 0 and 103 of the SACCH period when normal power control is active.

b) The SS shall make power measurements on each active, but unselected timeslot of the multislot configuration during frames 0, 34, 69, 73, 78, 82, 86, 91, 95 and 99 of the SACCH period when fast power control is active.

c) The SS shall make power measurements of the selected timeslots during frames 0 and 103 of the SACCH period when normal power control is active.

d) The SS shall make power measurements on the selected timeslot during frames 0, 34, 69, 73, 78, 82, 86, 91, 95 and 99 of the SACCH period when fast power control is active. These power measurements shall be referred to as P0, P34, P69, P73, P78, P82, P86, P91, P95 and P99 respectively.

e) The SS shall note the MS TX power reported by the MS for the selected timeslot in the SACCH reporting period following the change from fast power control to normal power control.

f) The SS shall note the MS TX power reported by the MS for the selected timeslot in the SACCH reporting period following the change from normal power control to fast power control.

22.7.5 Test requirement

a) The powers measured for the unselected timeslots in steps a), c) and d) shall conform with the Pmax specification for the MS power class given in the following table.

Power

class

Bands other than DCS 1 800 and PCS 1 900

Nominal Maximum output power
(MS TX Level)

Bands other than DCS 1 800 and PCS 1 900 Tolerance (dB) for normal conditions

DCS 1 800

Nominal Maximum

output power

PCS 1900

Nominal

Maximum

Output Power

(MS TX Level)

DCS 1 800 & PCS 1 900

Tolerance (dB)

for normal

conditions

E1

33 dBm (5)

±2

30 dBm

30 dBm (0)

±2

E2

27 dBm (8)

±3

26 dBm

26 dBm (2)

-4/+3

E3

23 dBm (10)

±3

22 dBm

22 dBm (4)

±3

b) The power measured for the selected timeslot in steps a) and e) shall be 14dBm in the case of DCS 1 800 and PCS 1 900 and 13dBm in the case of all other bands. In all cases the tolerance shall be ±3 dB.

c) The powers measured in step f) shall conform with the power specifications in the following table.

Pn

Bands other than DCS 1 800 and PCS 1 900

DCS 1 800/PCS 1 900

Tolerance

P0

13 dBm

14 dBm

±3 dB

P34

5 dBm

0 dBm

±5 dB

P69

Pmax

Pmax

±2 dB

P73

Pmax – 4 dB

Pmax – 4 dB

±3 dB

P78

Pmax – 2 dB

Pmax – 2 dB

±3 dB

P82

Pmax – 6 dB

Pmax – 6 dB

±3 dB

P86

Pmax

Pmax

±2 dB

P91

Pmax – 4 dB

Pmax – 4 dB

±3 dB

P95

Pmax – 8 dB

Pmax – 8 dB

±3 dB

P99

Pmax

Pmax

±2 dB

See table in test requirement a) for Pmax value for MS power class.

a) The power level reported by the MS in step g) shall be MS TX level corresponding to Pmax for the MS power class. See the table in test requirement a).

b) The power level reported by the MS in step h) shall be MS TX Level 8 in the case of DSC1800 and PCS 1 900 and MS TX Level 15 in the case of all other bands.

22.8 EGPRS Uplink Power Control – Use of  and CH parameters

22.8.1 Definition

Power control is important for spectrum efficiency as well as for power consumption in a cellular system. Power control for a packet oriented connection is more complicated than for a circuit switched connection, since there is no continuous two-way connection.

The RF output power, PCH , to be employed by the MS on each individual uplink PDCH shall be:

PCH = min(0 – CH –   (C + 48), PMAX),

Where:

CH is an MS and channel specific power control parameter, sent to the MS in an RLC control message (see 3GPP TS 04.60).

0 = 36 dBm for DCS 1 800 and PCS 1 900
= 39 dBm for all other bands.

 is a system parameter, broadcast on PBCCH or optionally sent to MS in an RLC control message (see 3GPP TS 04.08 / 3GPP TS 24.008 and 3GPP TS 04.60).

C is the normalised received signal level at the MS as defined in 3GPP TS 05.08, subclause 10.2.3.1.

PMAX is the maximum allowed output power in the cell =
GPRS_MS_TXPWR_MAX_CCH if PBCCH exists
MS_TXPWR_MAX_CCH otherwise.

All power values are expressed in dBm. (Note that the constants 0 and 48 are included only for optimising the coding of CH and C-value).

This is a flexible tool that can be used for different power control algorithms.

A pure open loop is achieved by setting  = 1 and keeping CH constant. With this method the output power is based on the received signal level assuming the same path loss in uplink and downlink. This is useful in the beginning of a packet transmission.

A pure closed loop is achieved by setting  = 0. With this method the output power is commanded by the network based on received signal level measurements made in the BTS in a similar way as for a circuit switched connection.

22.8.2 Conformance requirement

1. The MS shall use the same output power on all four bursts within one radio block. 3GPP TS 3GPP TS 05.08, subclause 10.2.1.

2. If a calculated output power is not supported by the MS, the MS shall use the supported output power which is closest to the calculated output power. 3GPP TS 05.08, subclause 10.2.1.

3. When the MS receives new CH or  values, the MS shall use the new value to update PCH 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value. 3GPP TS 05.08, subclause 10.2.1.

4. The transmitted power shall be a monotonic function of the calculated output power and any change of 2 dB in the calculated value shall correspond to a change of 2 1,5 dB in the transmitted value. The MS may round the calculated output power to the nearest nominal output power value. 3GPP TS 05.08, subclause 10.2.1.

22.8.3 Test purpose

1. To verify the MS uses that the same output power on all four bursts of a radio block under normal conditions.

2. To verify that the highest power supported by the MS is used if the calculated power is greater.

3. To verify that the MS applies new CH or  values 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value.

4. To verify that any change of 2 dB in the calculated power corresponds to a change of 2 1,5 dB in the transmitted value under normal conditions.

NOTE: For changes in calculated power which are less than the tolerances specified for absolute power accuracy in a MS, the transmitted power as a function of calculated power cannot be tested for monotonicity. Monotonicity between power control steps is implicitly tested in subclause 13.16.

22.8.4 Test method

22.8.4.1 Initial conditions

The SS establishes a BCCH and optionally a PBCCH on the same carrier in the mid ARFCN range. GPRS_MS_TXPWR_MAX_CCH is set to the maximum level (36dBm for DCS 1 800 and PCS 1 900 and 39dBm for all other bands). The CH value is set such that (0 – CH) equals the maximum power control level supported by the Power Class of the MS under test. The  value is set to 0.

The SS establishes a downlink TBF on the same ARFCN as the BCCH and PBCCH, and send data blocks to poll the MS for channel quality reports. The downlink power level is adjusted until a stable RXLEV-value of 58 is reported by the MS in the channel quality report (see 3GPP TS 05.08, subclause 8.1.4 and 10.2.3) – corresponding to a used C value in the range of -52dBm to -53dBm.

The SS orders the MS to transmit on the uplink. This is achieved using the GPRS test mode by transmitting a GPRS_TEST_MODE_CMD (see 3GPP TS 04.14, clause 5.4).

22.8.4.2 Procedure

If the MS supports both GMSK and 8PSK modulation on the uplink, the test is repeated with each modulation format.

a) The SS shall trigger a transmitter output power measurement on each of the four bursts of any radio block.

b) The method of power measurement is described in subclause 13.17.3.

NOTE 1: For 8PSK modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3.

c) Void.

d) The SS shall modify the CH value such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and5dBm for all other bands). If the transmission of the RLC control message containing the new CH value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

e) The SS shall modify the CH value such that (0 – CH) equals the maximum power control level supported by the power class of the MS under test. If the transmission of the RLC control message containing the new CH value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

f) The SS shall modify the CH value such that (0 – CH) equals the value 5dB below the maximum power control level supported by the power class of the MS under test. The  value is set to 1.

g) The SS shall decrement the  value with a step size of 0.1 until  equals 0. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

h) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step e). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

NOTE 2: If the power values measured for the four bursts of the radio block with  equal to 1.0 are:

– Pm0 ,Pm1, Pm2, Pm3.

And, the power values measured for the four bursts of the radio block with  equal to 0.5 are:

– Pn0 ,Pn1, Pn2, Pn3.

Then:

– Pm(max) = MAX(Pm0 ,Pm1, Pm2, Pm3);

– Pm(min) = MIN(Pm0 ,Pm1, Pm2, Pm3);

– Pn(max) = MAX(Pn0 ,Pn1, Pn2, Pn3);

– Pn(min) = MIN(Pn0 ,Pn1, Pn2, Pn3).

The maximum and minimum step sizes are:

– STEP(MAX)= Pm(max) – Pn(min);

– STEP(MIN) = Pm(min) – Pn(max).

g) The SS shall modify the CH value such that (0 – CH) equals the midrange power control level supported by the MS under test. The  value is set to 0.

h) The SS shall increment the  value with a step size of 0.1 until  equals 1. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

i) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step h). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

j) The SS shall modify the CH value such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and5dBm for all other bands). The  value is set to 0.

k) The SS shall increment the  value with a step size of 0.1 until  equals 1. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

l) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step k). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

22.8.5 Test requirement

1. The power of all four bursts within the radio block measured in step a) and c) shall be within the accuracies specified for the power class of the mobile under test, as indicated in the following table.

Power

class

Bands except DCS 1 800 and PCS 1 900 Nominal

Maximum

output

power

Bands except DCS 1 800 and PCS 1 900 Tolerance

(dB)

for normal

conditions

DCS 1 800

Nominal

Maximum

output

power

PCS 1900

Nominal

Maximum

Output

power

DCS 1 800 & PCS 1 900

Tolerance (dB)

for normal

conditions

1

‑ ‑ ‑ ‑ ‑ ‑

30 dBm

30 dBm

±2

2

39 dBm

24 dBm

24 dBm

±2

3

37 dBm

36 dBm

33 dBm

±2

4

33 dBm

±2

5

29 dBm

±2

E1

33 dBm

±2

30 dBm

30 dBm

±2

E2

27 dBm

±3

26 dBm

26 dBm

-4/+3

E3

23 dBm

±3

22 dBm

22 dBm

±3

2. The power of all four bursts within the radio block measured in step b) shall be 0dBm for a DCS 1 800 or PCS 1 900 MS and 5dBm for all other MS with an accuracy of 5 dB in all cases.

3. In steps f), i) and l), the maximum change in transmitted power between each identified pair of  values shall be ≤ 4,5 dB for either set1 or set2.

4. In steps f), i) and l), the minimum change in transmitted power between each identified pair of  values shall be ≥ ‑0,5 dB for either set1 or set2.

Note: 1 dB tolerance is included in test requirements 3. and 4.
The same alpha value set (either set1 or set2) shall be used in all the steps f), i) and l) and for both test requirements 3. and 4.

22.8a EGPRS2A Uplink Power Control – Use of  and CH parameters

22.8a.1 Definition

Power control is important for spectrum efficiency as well as for power consumption in a cellular system. Power control for a packet oriented connection is more complicated than for a circuit switched connection, since there is no continuous two-way connection.

Since the conformance requirements, test procedures and test requirements for EGPRS uplink power control – use of  and CH are defined in subclause 22.8 only 16QAM specific requirements and procedures are handled with this subclause. The RF output power, PCH , to be employed by the MS on each individual uplink PDCH shall be:

PCH = min(0 – CH –   (C + 48), PMAX),

Where:

CH is an MS and channel specific power control parameter, sent to the MS in an RLC control message (see 3GPP TS 44.060).

0 = 36 dBm for DCS 1800 and DCS 1900
= 39 dBm for all other bands.

 is a system parameter sent to MS in an RLC control message (see 3GPP TS 44.008 / 3GPP TS 24.008 and 3GPP TS 44.060).

C is the normalised received signal level at the MS as defined in 3GPP TS 45.008, subclause 10.2.3.1.

PMAX is the maximum allowed output power in the cell = GPRS_MS_TXPWR_MAX_CCH

All power values are expressed in dBm. (Note that the constants 0 and 48 are included only for optimising the coding of CH and C-value).

This is a flexible tool that can be used for different power control algorithms.

A pure open loop is achieved by setting  = 1 and keeping CH constant. With this method the output power is based on the received signal level assuming the same path loss in uplink and downlink. This is useful in the beginning of a packet transmission.

A pure closed loop is achieved by setting  = 0. With this method the output power is commanded by the network based on received signal level measurements made in the BTS in a similar way as for a circuit switched connection.

22.8a.2 Conformance requirement

1. The MS shall use the same output power on all four bursts within one radio block. 3GPP TS 3GPP TS 45.008, subclause 10.2.1.

2. If a calculated output power is not supported by the MS, the MS shall use the supported output power which is closest to the calculated output power. 3GPP TS 45.008, subclause 10.2.1.

3. When the MS receives new CH or  values, the MS shall use the new value to update PCH 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value. 3GPP TS 45.008, subclause 10.2.1.

4. The transmitted power shall be a monotonic function of the calculated output power and any change of 2 dB in the calculated value shall correspond to a change of 2 1,5 dB in the transmitted value. The MS may round the calculated output power to the nearest nominal output power value. 3GPP TS 45.008, subclause 10.2.1.

22.8a.3 Test purpose

1. To verify the MS uses that the same output power on all four bursts of a radio block under normal conditions.

2. To verify that the highest power supported by the MS is used if the calculated power is greater.

3. To verify that the MS applies new CH or  values 2 radio blocks after the end of the frame containing the last timeslot of the message block containing the new value.

4. To verify that any change of 2 dB in the calculated power corresponds to a change of 2 1,5 dB in the transmitted value under normal conditions.

NOTE: For changes in calculated power which are less than the tolerances specified for absolute power accuracy in a MS, the transmitted power as a function of calculated power cannot be tested for monotonicity. Monotonicity between power control steps is implicitly tested in subclause 13.16.

22.8a.4 Test method

22.8a.4.1 Initial conditions

The SS establishes a BCCH in the mid ARFCN range. GPRS_MS_TXPWR_MAX_CCH is set to the maximum level (36dBm for DCS 1800 and DCS 1900 and 39dBm for all other bands). The CH value is set such that (0 – CH) equals the maximum power control level supported by the Power Class of the MS under test. The  value is set to 0.

The SS establishes a downlink TBF on the same ARFCN as the BCCH and send data blocks to poll the MS for channel quality reports. The downlink power level is adjusted until a stable RXLEV-value of 58 is reported by the MS in the channel quality report (see 3GPP TS 45.008, subclause 8.1.4 and 10.2.3) – corresponding to a used C value in the range of -52dBm to -53dBm.

The SS orders the MS to transmit on the uplink. This is achieved using the GPRS test mode by transmitting a GPRS_TEST_MODE_CMD (see 3GPP TS 44.014, clause 5.4).

22.8a.4.2 Procedure

a) The SS shall trigger a transmitter output power measurement on each of the four bursts of any radio block.

b) The method of power measurement is described in subclause 13.17.3a.

NOTE 1: For 16QAM modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3a.

c) Void.

d) The SS shall modify the CH value such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1800 and DCS 1900 and5dBm for all other bands). If the transmission of the RLC control message containing the new CH value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

e) The SS shall modify the CH value such that (0 – CH) equals the maximum power control level supported by the power class of the MS under test. If the transmission of the RLC control message containing the new CH value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

f) The SS shall modify the CH value such that (0 – CH) equals the value 5dB below the maximum power control level supported by the power class of the MS under test. The  value is set to 1.

g) The SS shall decrement the  value with a step size of 0.1 until  equals 0. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

h) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step e). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

NOTE 2: If the power values measured for the four bursts of the radio block with  equal to 1.0 are:

– Pm0 ,Pm1, Pm2, Pm3.

And, the power values measured for the four bursts of the radio block with  equal to 0.5 are:

– Pn0 ,Pn1, Pn2, Pn3.

Then:

– Pm(max) = MAX(Pm0 ,Pm1, Pm2, Pm3);

– Pm(min) = MIN(Pm0 ,Pm1, Pm2, Pm3);

– Pn(max) = MAX(Pn0 ,Pn1, Pn2, Pn3);

– Pn(min) = MIN(Pn0 ,Pn1, Pn2, Pn3).

The maximum and minimum step sizes are:

– STEP(MAX)= Pm(max) – Pn(min);

– STEP(MIN) = Pm(min) – Pn(max).

g) The SS shall modify the CH value such that (0 – CH) equals the midrange power control level supported by the MS under test. The  value is set to 0.

h) The SS shall increment the  value with a step size of 0.1 until  equals 1. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

i) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step h). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

j) The SS shall modify the CH value such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1800 and DCS 1900 and5dBm for all other bands). The  value is set to 0.

k) The SS shall increment the  value with a step size of 0.1 until  equals 1. For each step change in  value, if the transmission of the RLC control message containing the new  value is completed in radio block N, the SS shall trigger a transmitter output power measurement on each of the four bursts of radio block N+3.

l) For each value of , the SS shall note the maximum and minimum power values measured from the four bursts of the radio block in step k). The SS shall then calculate the maximum and minimum changes in output power measured for the following two sets of pairs of  values, set1: 1.0 and 0.5; 0.9 and 0.4; 0.8 and 0.3; 0.7 and 0.2; 0.6 and 0.1; 0.5 and 0, set2: 1.0 and 0.6; 0.9 and 0.5; 0.8 and 0.4; 0.7 and 0.3; 0.6 and 0.2; 0.5 and 0.1; 0.4 and 0.0. The maximum change is calculated by subtracting the minimum power measured from the smaller value of  from the maximum power measured for the larger value of . The minimum step change is calculated by subtracting the maximum power measured from the smaller value of  from the minimum power measured for the larger value of .

22.8a.5 Test requirement

1. The power of all four bursts within the radio block measured in step a) to e) shall be within the accuracies specified for the power class of the mobile under test, as indicated in the following table.

Power

class

Bands except DCS 1800 and DCS 1900 Nominal

Maximum

output

power

Bands except DCS 1800 and DCS 1900 Tolerance

(dB)

for normal

conditions

DCS 1800

Nominal

Maximum

output

power

PCS 1900

Nominal

Maximum

Output

power

DCS 1800 & DCS 1900

Tolerance (dB)

for normal

conditions

E1

31 dBm

±2

28 dBm

28 dBm

±2

E2

25 dBm

±3

24 dBm

24 dBm

-4/+3

E3

21 dBm

±3

20 dBm

20 dBm

±3

2. The power of all four bursts within the radio block measured in step b) shall be 0dBm for a DCS 1800 or DCS 1900 MS and 5dBm for all other MS with an accuracy of 5 dB in all cases.

3. In steps f), i) and l), the maximum change in transmitted power between each identified pair of  values shall be ≤ 4,5 dB for either set1 or set2.

4. In steps f), i) and l), the minimum change in transmitted power between each identified pair of  values shall be ≥ ‑0,5 dB for either set1 or set2.

NOTE: 1 dB tolerance is included in test requirements 3. and 4.
The same alpha value set (either set1 or set2) shall be used in all the steps h), i) and l) and for both test requirements 3. and 4.

22.9 EGPRS Uplink Power Control – Independence of TS Power Control

22.9.1 Definition

22.9.2 Test conformance

For an EGPRS multislot MS supporting 2 or more uplink PDCHs, power control shall be employed by the MS on each individual uplink PDCH. 3GPP TS 05.08, subclause 10.2.1.

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 45.005, subclause 4.1.1.

22.9.3 Test purpose

To verify that EGPRS power control is applied to each PDCH in a multislot configuration independently.

22.9.4 Test method

22.9.4.1 Initial conditions

The SS establishes a downlink TBF. The SS orders the MS to transmit on the maximum number of timeslots for the multislot class of the MS on the uplink. This is achieved using the GPRS test mode by transmitting a GPRS_TEST_MODE_CMD (see 3GPP TS 04.14, subclause 5.4).

Each timeslot is transmitting on its maximum power. The -value is set to 0.

Specific PICS Statements:

– MS using reduced interslot dynamic range in multislot configurations

PIXIT Statements:

22.9.4.2 Procedure

If the MS supports both GMSK and 8PSK modulation on the uplink, the test is repeated with each modulation format.

a) The SS shall modify the CH value of one timeslot such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands).

b) The SS shall make a transmitter output power measurement on each of the four bursts of any radio block of the timeslot under test.

NOTE: For 8PSK modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3.

c) The SS shall make a transmitter output power measurement on each of the four bursts of any radio block of the other active timeslots.

d) The SS shall modify the CH value for the timeslot under test such that (0 – CH) equals the maximum power control level supported by the MS under test.

e) Steps a) to d) shall be repeated for each timeslot of the multislot configuration.

22.9.5 Test requirement

1. The power of all four bursts within the radio block measured in step b) shall be 0dBm for a DCS 1 800 or PCS 1 900 MS and 5dBm for all other MS with an accuracy of 5 dB in all cases. For an MS using reduced interslot dynamic range, the power measured in step b) shall be within 10dB ± 3dB of the average power of the timeslots measured in step c).

2. For all TS, the power of all four bursts within the radio block measured in step c) shall be within the accuracies specified for the power class of the mobile under test, as indicated in table 22.9-1 (see also 3GPP TS 05.05 / 3GPP TS 45.005).

Table 22.9-1: The MS maximum output power

Power

class

Bands except DCS 1 800 and PCS 1 900Nominal

Maximum

output

power

Bands except DCS 1 800 and PCS 1 900 Tolerance

(dB)

for normal

conditions

DCS 1 800

Nominal

Maximum

output

power

PCS 1900

Nominal

Maximum

Output

power

DCS 1 800 & PCS 1 900

Tolerance (dB)

for normal

conditions

1

‑ ‑ ‑ ‑ ‑ ‑

30 dBm

30 dBm

±2

2

39 dBm

24 dBm

24 dBm

±2

3

37 dBm

36 dBm

33 dBm

±2

4

33 dBm

±2

5

29 dBm

±2

E1

33 dBm

±2

30 dBm

30 dBm

±2

E2

27dBm

±3

26 dBm

26 dBm

-4/+3

E3

23dBm

±3

22 dBm

22 dBm

±3

From R99 onwards, in order to manage mobile terminal heat dissipation resulting from transmission on multiple uplink timeslots, the mobile station shall reduce its maximum output power on a per-assignment basis by the values given in table 22.9-2 or 22.9-3:

Table 22.9-2: R99 and Rel-4: 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 22.9-3: From Rel-5 onwards: 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 Rel-5 onwards, the actual supported maximum output power shall be in the range indicated by the parameters XXX_MULTISLOT_POWER_PROFILE (See 3GPP TS 24.008) for n allocated uplink timeslots:

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

Where:

a = min (MAX_PWR, MAX_PWR + XXX_MULTISLOT_POWER_PROFILE – 10log(n));

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

XXX_MULTISLOT_POWER_PROFILE refers either to GMSK_MULTISLOT_POWER PROFILE or 8‑PSK_MULTISLOT_POWER_PROFILE depending on the modulation type concerned, and

XXX_MULTISLOT_POWER_PROFILE 0 = 0 dB;
XXX_MULTISLOT_POWER_PROFILE 1 = 2 dB;
XXX_MULTISLOT_POWER_PROFILE 2 = 4 dB;
XXX_MULTISLOT_POWER_PROFILE 3 = 6 dB.

For DCS 1800 and PCS 1900 frequency bands b = 3 dB, for all other bands b = 2 dB.

22.9a EGPRS2A Uplink Power Control – Independence of TS Power Control

22.9a.1 Definition

Since the conformance requirements, test procedures and test requirements for EGPRS uplink power control – Independence of TS Power control are defined in subclause 22.9, only 16QAM specific requirements and procedures are handled with this subclause.

22.9a.2 Test conformance

For an EGPRS2A multislot MS supporting 2 or more uplink PDCHs, power control shall be employed by the MS on each individual uplink PDCH. 3GPP TS 05.08, subclause 10.2.1.

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 45.005, subclause 4.1.1.

22.9a.3 Test purpose

To verify that EGPRS power control is applied to each PDCH in a multislot configuration independently.

22.9a.4 Test method

22.9a.4.1 Initial conditions

The SS establishes a downlink TBF. The SS orders the MS to transmit on the maximum number of timeslots for the multislot class of the MS on the uplink. This is achieved using the GPRS test mode by transmitting a GPRS_TEST_MODE_CMD (see 3GPP TS 04.14, subclause 5.4).

Each timeslot is transmitting on its maximum power. The -value is set to 0.

Specific PICS Statements:

– MS using reduced interslot dynamic range in multislot configurations

PIXIT Statements:

22.9a.4.2 Procedure

a) The SS shall modify the CH value of one timeslot such that (0 – CH) equals the minimum power control level supported by the MS under test (0dBm for DCS 1 800 and PCS 1 900 and 5dBm for all other bands).

b) The SS shall make a transmitter output power measurement on each of the four bursts of any radio block of the timeslot under test.

NOTE: For 16QAM modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3a.

c) The SS shall make a transmitter output power measurement on each of the four bursts of any radio block of the other active timeslots.

d) The SS shall modify the CH value for the timeslot under test such that (0 – CH) equals the maximum power control level supported by the MS under test.

e) Steps a) to d) shall be repeated for each timeslot of the multislot configuration.

22.9a.5 Test requirement

1. The power of all four bursts within the radio block measured in step b) shall be 0dBm for a DCS 1 800 or PCS 1 900 MS and 5dBm for all other MS with an accuracy of 5 dB in all cases. For an MS using reduced interslot dynamic range, the power measured in step b) shall be within 10dB ± 3dB of the average power of the timeslots measured in step c).

2. For all TS, the power of all four bursts within the radio block measured in step c) shall be within the accuracies specified for the power class of the mobile under test, as indicated in table 22.9-1 (see also 3GPP TS 05.05 / 3GPP TS 45.005).

Table 22.9-1: The MS maximum output power

Power

class

Bands except DCS 1 800 and PCS 1 900Nominal

Maximum

output

power

Bands except DCS 1 800 and PCS 1 900 Tolerance

(dB)

for normal

conditions

DCS 1 800

Nominal

Maximum

output

power

PCS 1900

Nominal

Maximum

Output

power

DCS 1 800 & PCS 1 900

Tolerance (dB)

for normal

conditions

E1

31 dBm

±2

28 dBm

28 dBm

±2

E2

25 dBm

±3

24 dBm

24 dBm

-4/+3

E3

21 dBm

±3

20 dBm

20 dBm

±3

In order to manage mobile terminal heat dissipation resulting from transmission on multiple uplink timeslots, the mobile station shall reduce its maximum output power on a per-assignment basis by the values given in 22.9-3:

Table 22.9-3: From Rel-5 onwards: 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 Rel-5 onwards, the actual supported maximum output power shall be in the range indicated by the parameters XXX_MULTISLOT_POWER_PROFILE (See 3GPP TS 24.008) for n allocated uplink timeslots:

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

Where:

a = min (MAX_PWR, MAX_PWR + XXX_MULTISLOT_POWER_PROFILE – 10log(n));

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

XXX_MULTISLOT_POWER_PROFILE refers to 8‑PSK_MULTISLOT_POWER_PROFILE

XXX_MULTISLOT_POWER_PROFILE 0 = 0 dB;
XXX_MULTISLOT_POWER_PROFILE 1 = 2 dB;
XXX_MULTISLOT_POWER_PROFILE 2 = 4 dB;
XXX_MULTISLOT_POWER_PROFILE 3 = 6 dB.

For DCS 1800 and PCS 1900 frequency bands b = 3 dB, for all other bands b = 2 dB.

22.10 Void

22.11 Power control in exclusive allocation mode

22.11.1 Conformance requirements

Sub-clauses 10.2.1 and 10.2.2 do not apply for the PDCH/H in Exclusive MAC mode while in DTM. In this case:

– The MS shall apply the output power ordered by the network on the SACCH to all channels (both for the TCH/H and the PDCH/H).

– The network shall use the same output power on the dedicated connection and on all the blocks on the PDCH/H addressed to the MS. Blocks not addressed to the MS may be transmitted at a lower power level. As an exception, the bursts transmitted on the BCCH carrier shall be transmitted at the BCCH level.

NOTE: Power control is not applicable to point-to-multipoint services.

References

3GPP TS 05.08/45.008, sub-clause 10.2

22.11.2 Test purpose

To verify that MS applies the output power ordered by the network on the SACCH to all channels.

22.11.3 Method of test

Initial Conditions

System Simulator:

1 cell, DTM supported.

Mobile Station:

The MS is in the active state (U10) of a call.
The MS is GPRS idle with a P-TMSI allocated and the PDP context 1 activated.

Test Procedure

The MS is triggered to initiate packet uplink transfer data and sends a DTM REQUEST message to the SS. On receiving the DTM REQUEST message, requesting uplink resources, the SS assigns the MS PS resources in a timeslot adjoining the CS resource. The SS accomplishes the resource assignment by passing a PACKET ASSIGNMENT message to the MS. Once the SS has verified that the MS is correctly sending RLC data blocks to the SS, the SS sets TXPWR in the SACCH to the maximum peak power appropriate to the class of the MS. The SS measures the MS transmitter output power, on the timeslot(s), which changes by one power step towards the new level signalled for each measured burst until the MS is operating at the closest supported power control level and from then on, all transmissions shall be at that level. The SS then sets the TXPWR to a lower random value and then verifies that the MS lowers the output power of the transmitter for both the PDTCH and the TCH to this level. After the SS has received approximately 9k octets of data from the MS, the SS commands the change of transit power by passing the PACKET POWER / TIMING ADVANCE message to the MS on the PACCH. Whilst the MS continues with the transmission of the 10k octets, the SS verifies that the MS has not followed the order to change power as indicated in the PACKET POWER / TIMING ADVANCE message.

Maximum Duration of Test

5 minutes

Expected Sequence

Step

Direction

Message

Comments

1

MS

MS in the active state (U10) of a call on Timeslot N with set to Channel Type=TCH/H.

2

MS

Trigger the MS to initiate an uplink packet transfer containing 10k octets.

3

MS->SS

DTM REQUEST

4

SS->MS

PACKET ASSIGNMENT

See specific message contents.

5

MS<->SS

{ Uplink data transfer }

Macro –transmission of ~9k octets.

6

SS->MS

PACKET POWER CONTROL / TIMING ADVANCE

Sent after approximately 9k octets have been correctly passed to the MS. The message only changes the output power of the MS by setting the ΓCH parameter to maximum for each of the timeslots the MS is utilising. Setting the parameter to maximum indicates the MS should turn down the output power in the timeslots indicated.

7

MS<->SS

{ Uplink data transfer }

Macro – Completion on transmission of 10k octets.

8

SS

Verify that no the MS does not change the transmission power after receiving the PACKET POWER CONTROL / TIMING ADVANCE message.

Specific message contents

PACKET ASSIGNMENT (Step 4):

As default message contents except:

RR Packet Uplink Assignment IE

– TIMESLOT_ALLOCATION

N

RR Packet Downlink Assignment IE

Not included

22.12 Downlink power control, PR mode A, GPRS TBF

22.12.1 Conformance requirements

The MS is required to meet the 05.05 specification when the downlink power control is used in PR mode A.

References

3GPP TS 05.08/45.008, sub-clause 10.2.2

22.12.2 Test purpose

To verify that MS still correctly decodes RLC data blocks while the BSS applies power control mode A and PR mode A and makes downlink power variations on an EGPRS TBF which shares the same PDCH.

22.12.3 Method of test

Initial Conditions

System Simulator:

1 cell, GPRS and EGPRS supported.

The test is performed in TU50 radio environment, at the reference point of c/i = 16dB.

Mobile Station:

The MS is in GPRS idle mode with a P-TMSI allocated and the PDP context 2 activated; it is allocated a GPRS TBF.

Test Procedure

The GPRS MS is allocated a downlink TBF (TBF1) and a downlink EGPRS transfer is simulated as if an EGPRS downlink TBF (TBF2) were allocated on the same PDCHs. Downlink RLC data blocks are sent to MS using the same power level while on TBF2 different power levels are used: on the EGPRS TBF, downlink RLC data blocks are sent at the BCCH (P0 = 0 dB) power level, then RLC data blocks with different attenuations and valid PR fields are sent.

During the transfer, the RLC data blocks shall be correctly received by the GPRS MS (TBF1) under the 05.05 requirements.

Maximum Duration of Test

1 minute

Expected Sequence

Step

Direction

Message

Comments

1

SS

The SS initiates with MS1 an GPRS Downlink packet transfer containing 20k octets, in BTS_PWR_CTRL_MODE mode A and PR Mode A.

2

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks in 8PSK (MCS9) to MS2 at the BCCH power-2dB level (PR=00), alternately with MS1 so that one block out of 2 is sent to MS2.

3

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks (CS3) are sent to the MS at the BCCH power level (PR=00), alternately with MS2 so that one block out of 2 is sent to MS1, and trigger a Packet downlink Ack/Nack on the 12th RLC data block.

4

MS -> SS

Packet downlink Ack/Nack

The Packet downlink Ack/Nack acknowledges at least 90% of the RLC data blocks

5

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks with a 4dB attenuation and a valid PR=01 field in 8PSK (MCS9), alternately with MS1 so that one block out of 2 is sent to MS2.

6

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks (CS3) are sent to the MS at the BCCH power level (PR=00), alternately with MS2 so that one block out of 2 is sent to MS1, and trigger a Packet downlink Ack/Nack on the 12th RLC data block.

7

MS -> SS

Packet downlink Ack/Nack

The Packet downlink Ack/Nack acknowledges at least 90% of the RLC data blocks

8

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks with a 6dB attenuation and a valid PR=01 field in 8PSK (MCS9), alternately with MS1 so that one block out of 2 is sent to MS2.

9

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks (CS3) are sent to the MS at the BCCH power level (PR=00), alternately with MS2 so that one block out of 2 is sent to MS1, and trigger a Packet downlink Ack/Nack on the 12th RLC data block.

10

MS -> SS

Packet downlink Ack/Nack

The Packet downlink Ack/Nack acknowledges at least 90% of the RLC data blocks

11

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks to the MS at the BCCH power-2 dB level (PR=00) in GMSK (MCS4) alternately with MS1 so that one block out of 2 is sent to MS2.

12

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks (CS3) are sent to the MS at the BCCH power level (PR=00), alternately with MS2 so that one block out of 2 is sent to MS1, and trigger a Packet downlink Ack/Nack on the 12th RLC data block.

13

MS -> SS

Packet downlink Ack/Nack

The Packet downlink Ack/Nack acknowledges at least 90% of the RLC data blocks

14

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks with a 10dB attenuation and a valid PR (PR=10) field in GMSK (MCS4) alternately with MS1 so that one block out of 2 is sent to MS2.

15

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks (CS3) are sent to the MS at the BCCH power level (PR=00), alternately with MS2 so that one block out of 2 is sent to MS1, and trigger a Packet downlink Ack/Nack on the 12th RLC data block.

16

MS -> SS

Packet downlink Ack/Nack

The Packet downlink Ack/Nack acknowledges at least 90% of the RLC data blocks

17

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks with a 8dB attenuation and a valid PR (PR=10) field in GMSK (MCS4) alternately with MS1 so that one block out of 2 is sent to MS2.

18

SS -> MS

RLC DATA BLOCK

Send 12 Downlink RLC data blocks (CS3) are sent to the MS at the BCCH power level (PR=00), alternately with MS2 so that one block out of 2 is sent to MS1, and trigger a Packet downlink Ack/Nack on the 12th RLC data block.

19

MS -> SS

Packet downlink Ack/Nack

The Packet downlink Ack/Nack acknowledges at least 90% of the RLC data blocks

20

SS<->MS

{ Downlink data transfer }

Macro – Completion on transmission of 20k octets.

Specific message contents

PACKET DOWNLINK ASSIGNMENT (Step 1):

As default message contents except:

BTS_PWR_CTRL_MODE

0 (mode A)

PR_MODE

0 (PR mode A : for one addressed MS)

P0

0000 (0 dB)

22.13 Enhanced Power Control (EPC) timing and measurement reporting in single slot operation.

22.13.1 Definition

The EPC is Rel-5 feature which is part of GERAN Feature Package 2, see 3GPP TS 24.008. The EPC signalling is mapped onto every SACCH burst, allowing a control interval of 120 ms. It can be used with any speech traffic channel (both GMSK and 8PSK modulated) and does not impact the speech channel coding. The EPC is based on differential control to adjust the employed RF power level, see 3GPP TS 45.008.

22.13.2 Test conformance

  1. The MS shall employ the most recently commanded EPC power control level, as indicated by the EPC Uplink Power Control Command sent on the corresponding EPCCH in the downlink. The EPC Uplink Power Control Command is sent once every EPC reporting period, see 3GPP TS 45.008 subclause 8.4.1b. The MS shall ignore the Ordered MS Power Level sent in the SACCH L1 header in the downlink, 3GPP TS 45.008, subclause 4.2.
  2. When on a channel in EPC mode, the MS shall use the EPCCH in the uplink for EPC measurement reporting, 3GPP TS 45.008 subclause 4.2.
  3. When on a channel in EPC mode, the MS shall confirm, in the SACCH L1 header on the uplink, the RF power control level at the last burst of the previous SACCH period, as specified for normal power control, 3GPP TS 45.008, subclause 4.2
  4. If a power control command is received but the requested output power is not supported by the MS, the MS shall use the supported output power which is closest to the requested output power, 3GPP TS 45.008, subclause 4.3
  5. The enhanced power control mechanism shall use the differential power control mechanism defined in 3GPP TS 45.008, subclause 4.3
  6. When the MS is ordered to obey the Ordered MS Power Level, the timing according to 3GPP TS 45.008 subclause 4.7.1 applies, see 3GPP TS 45.008, subclause 4.7.3
  7. When the MS is ordered to obey the EPC Uplink Power Control Command, it shall, upon receipt of an EPC Uplink Power Control Command on an EPCCH in the downlink, change to the new power level on the corresponding uplink channel at the first TDMA frame belonging to the next EPC reporting period (as specified in 3GPP TS 45.008 subclause 8.4.1b), see 3GPP TS 45.008, subclause 4.7.3

22.13.3 Test purpose

  1. To verify that power level changes using EPC are implemented by the MS in accordance with conformance requirements 1, 5 and 7.
  2. To verify that power control commands requesting levels not supported by the MS are treated in accordance with conformance requirement 4.
  3. To verify that the RF power control level confirmed by the MS is in accordance with conformance requirement 3.
  4. To verify that the EPC measurement reporting in accordance with conformance requirement 2.
  5. To verify that the timing cycle in EPC mode is in accordance with conformance requirements 6 and 7.

22.13.4 Test method

22.13.4.1 Initial conditions

A call is set up by the SS according to the generic call set up procedure for single slot configuration on a channel with ARFCN in the Mid ARFCN range (see table 3.3). The power control level is set to maximum power using normal power control.

Specific PICS statements:

PIXIT statements:

22.13.4.2 Procedure

If the MS supports both GMSK and 8PSK modulation on the uplink, the test is repeated with each modulation format.

a) Using the normal power control mechanism, the SS shall command the MS to transmit at power level 8 (14dBm) in the case of DCS 1 800 and PCS 1 900 or power level 15 (13 dBm) in the case of all other bands on the TCH/O-TCH, see 3GPP TS 45.005, clause 4. After 1s, see 3GPP TS45.008, clause 4.71 a power measurement shall be made.

NOTE: The method of measuring the MS transmitter output power is given in subclause 13.3. For 8PSK modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3.

b) The SS shall command the MS to switch from normal power control to EPC by means of the SACCH L1 header (see 3GPP TS 44.004). The SS shall note the MS TX power reported by the MS in the EPC reporting period following the change from normal power control to EPC.

c) The SS shall command the MS to follow the schedule of enhanced power control detailed in table 22.13-1 below. The SS shall make power measurements during frame n of each SACCH period when enhanced power control is active. These power measurements shall be referred to as Pn,m respectively.

Table 22.13-1: EPC Timing and Reporting

EPC

Reporting

Period

Number

EPC Uplink Power Control Command

Nominal Output

Power during EPC

Reporting Period

Bands other than DCS 1 800 and PCS 1 900

Nominal Output

Power during EPC Reporting Period

DCS 1 800 & PCS 1 900

Pm,n

0

1 Step Decrease

13 dBm

14 dBm

P1,0

1

1 Step Decrease

11 dBm

12 dBm

P1,12

2

1 Step Decrease

9 dBm

10 dBm

P1,38

3

1 Step Decrease

7 dBm

8 dBm

P1,64

4

1 Step Decrease

5 dBm

6 dBm

P1,90

5

1 Step Decrease

5 dBm

4 dBm

P2,12

6

1 Step Decrease

5 dBm

2 dBm

P2,38

7

1 Step Decrease

5 dBm

0 dBm

P2,64

8

2 Step Increase

5 dBm

0 dBm

P2,90

9

2 Step Increase

9 dBm

4 dBm

P3,12

10

2 Step Increase

13 dBm

8 dBm

P3,38

11

2 Step Increase

17 dBm

12 dBm

P3,64

12

2 Step Increase

21 dBm

16 dBm

P3,90

13

2 Step Increase

Min (25 dBm, Pmax) for 8PSK

25 dBm for GMSK

20 dBm

P4,12

14

2 Step Increase

Min (29 dBm, Pmax) for 8PSK

29 dBm for GMSK

Min (24 dBm, Pmax) for 8PSK

24 dBm for GMSK

P4,38

15

4 Step Increase

Min (33 dBm, Pmax)

Min (28 dBm, Pmax)

P4,64

16

2 Step Decrease

Pmax

Pmax

P4,90

17

1 Step Increase

Pmax – 4 dB

Pmax – 4 dB

P5,12

18

2 Step Decrease

Pmax – 2 dB

Pmax – 2 dB

P5,38

19

3 Step Increase

Pmax – 6 dB

Pmax – 6 dB

P5,64

20

2 Step Decrease

Pmax

Pmax

P5,90

21

2 Step Decrease

Pmax – 4 dB

Pmax – 4 dB

P6,12

22

4 Step Increase

Pmax – 8 dB

Pmax – 8 dB

P6,38

23

No Change

Pmax

Pmax

P6,64

Pmax is the maximum power for the mobile class, see table 22.13-3.

Pm,n values refer to the power measured in the n-th frame of the m-th SACCH multiframe.

d) The SS shall command the MS to switch to normal power control. The SS shall note the MS TX power reported by the MS in the SACCH reporting period following the change from EPC to normal power control.

22.13.5 Test requirement

a) The power measured in steps a) and b) shall be 14dBm in the case of DCS 1 800 and PCS 1 900 and 13dBm in the case of all other bands. In all cases the tolerance shall be ±3 dB.

b) The powers measured in step c) shall conform with the power specifications in the following table 22.13-2.

Table 22.13-2: EPC Power Measurements

Pm,n

Bands other than DCS 1 800 and PCS 1 900

DCS 1 800/PCS 1 900

Tolerance

P1,0

13 dBm

14 dBm

±3 dB

P2,90

5 dBm

0 dBm

±5 dB

P4,90

Pmax

Pmax

±2 dB

P5,12

Pmax – 4 dB

Pmax – 4 dB

±3 dB

P5,38

Pmax – 2 dB

Pmax – 2 dB

±3 dB

P5,64

Pmax – 6 dB

Pmax – 6 dB

±3 dB

P5,90

Pmax

Pmax

±2 dB

P6,12

Pmax – 4 dB

Pmax – 4 dB

±3 dB

P6,38

Pmax – 8 dB

Pmax – 8 dB

±3 dB

P6,64

Pmax

Pmax

±2 dB

c) The power level reported by the MS in step d) shall be MS TX level corresponding to Pmax for the MS power class, see bellow table 22.13-3.

Table 22.13-3: The MS maximum output power for GMSK and 8PSK modulation

Power

class

Bands except DCS 1 800 and PCS 1 900Nominal

Maximum

output

power

Bands except DCS 1 800 and PCS 1 900 Tolerance

(dB)

for normal

conditions

DCS 1 800

Nominal

Maximum

output

power

PCS 1900

Nominal

Maximum

Output

power

DCS 1 800 & PCS 1 900

Tolerance (dB)

for normal

conditions

1

‑ ‑ ‑ ‑ ‑ ‑

30 dBm

30 dBm

±2

2

39 dBm

24 dBm

24 dBm

±2

3

37 dBm

36 dBm

33 dBm

±2

4

33 dBm

±2

5

29 dBm

±2

E1

33 dBm

±2

30 dBm

30 dBm

±2

E2

27dBm

±3

26 dBm

26 dBm

-4/+3

E3

23dBm

±3

22 dBm

22 dBm

±3

22.14 Enhanced Power Control (EPC) timing and measurement reporting in multislot operation.

22.14.1 Definition

The EPC is Rel-5 feature which is part of GERAN Feature Package 2, see 3GPP TS 24.008. The EPC is based on differential control to adjust the employed RF power level, see 3GPP TS 45.008.

High Speed Circuit Switched Data (HSCSD) is one possibility for EPC operation in multislot configuration, see 3GPP TS 45.002, clause 6.4.2.1

22.14.2 Test conformance

  1. The MS shall employ the most recently commanded EPC power control level, as indicated by the EPC Uplink Power Control Command sent on the corresponding EPCCH in the downlink. The EPC Uplink Power Control Command is sent once every EPC reporting period, see 3GPP TS 45.008 subclause 8.4.1b. The MS shall ignore the Ordered MS Power Level sent in the SACCH L1 header in the downlink, 3GPP TS 45.008, subclause 4.2.
  2. In case of a multislot configuration, each bi‑directional channel shall be power controlled individually by the corresponding SACCH, E-IACCH or EPCCH, whichever is applicable, 3GPP TS 45.008, subclause 4.2
  3. When on a channel in EPC mode, the MS shall use the EPCCH in the uplink for EPC measurement reporting, 3GPP TS 45.008 subclause 4.2.
  4. When on a channel in EPC mode, the MS shall confirm, in the SACCH L1 header on the uplink, the RF power control level at the last burst of the previous SACCH period, as specified for normal power control, 3GPP TS 45.008, subclause 4.2
  5. If a power control command is received but the requested output power is not supported by the MS, the MS shall use the supported output power which is closest to the requested output power, 3GPP TS 45.008, subclause 4.3
  6. The enhanced power control mechanism shall use the differential power control mechanism defined in 3GPP TS 45.008, subclause 4.3
  7. When the MS is ordered to obey the Ordered MS Power Level, the timing according to 3GPP TS 45.008 subclause 4.7.1 applies, see 3GPP TS 45.008, subclause 4.7.3
  8. When the MS is ordered to obey the EPC Uplink Power Control Command, it shall, upon receipt of an EPC Uplink Power Control Command on an EPCCH in the downlink, change to the new power level on the corresponding uplink channel at the first TDMA frame belonging to the next EPC reporting period (as specified in 3GPP TS 45.008 subclause 8.4.1b), see 3GPP TS 45.008, subclause 4.7.3

22.14.3 Test purpose

  1. To verify that power level changes using EPC are implemented by the MS in accordance with conformance requirements 1, 6 and 8.
  2. To verify that power control commands requesting levels not supported by the MS are treated in accordance with conformance requirement 5.
  3. To verify that the RF power control level confirmed by the MS is in accordance with conformance requirement 4.
  4. To verify that in a multislot configuration the MS implements enhanced power control independently on each bi-directional SACCH or EPCCH in accordance with conformance requirement 2.
  5. To verify that the EPC measurement reporting in accordance with conformance requirement 3.
  6. To verify that the timing cycle in EPC mode is in accordance with conformance requirement 7 and 8.

22.14.4 Test method

22.14.4.1 Initial conditions

A call is set up by the SS according to the generic call set up procedure for multislot configuration on a channel with ARFCN in the Mid ARFCN range (see table 3.3).

The SS commands the MS to operate in multislot configuration where it has the highest possible number of bi‑directional TCHs or O-TCHs. Using normal power control, the level of each TX slot is set to maximum power.

Specific PICS statements:

PIXIT statements:

22.14.4.2 Procedure

If the MS supports both GMSK and 8PSK modulation on the uplink, the test is repeated with each modulation format.

For the purpose of this test the SS shall randomly select one bi-directional TCH (in case of GMSK modulation) or O-TCH (in case of 8PSK) to exercise. All other channels shall maintain the state defined under the initial conditions. In this procedure these other TCHs/O-TCHs are referred to as the active but unselected channels.

a) Using the normal power control mechanism, the SS shall command the MS to transmit at power level 8 (14dBm) in the case of DCS 1 800 and PCS 1 900 or power level 15 (13 dBm) in the case of all other bands on the selected TCH/O-TCH, see 3GPP TS 45.005, clause 4. After 1s, a power measurement shall be made on each TX slot of the multislot configuration.

NOTE: The method of measuring the MS transmitter output power is given in subclause 13.3. For 8PSK modulation, a measurement method for estimating the long term average power from a single burst shall be employed. See subclause 13.17.3.

b) The SS shall command the MS to switch between the normal power control and the enhanced power control mechanism on the selected TCH/O-TCH by means of the SACCH L1 header (see 3GPP TS 44.004). Each power control mechanism shall be maintained for 6 SACCH multiframes. This cycle shall be repeated until all power measurements specified in steps iii) to vi) below have been completed.

During the SACCH periods when normal power control is active, the SS shall command the MS to maintain the power levels set in step a). During the SACCH periods when Enhanced Power Control is active, the SS shall command the MS to follow the schedule of enhanced power control detailed in table 22.14-1 below.

Table 22.14-1: EPC Timing and Reporting

EPC

Reporting

Period

Number

EPC Uplink Power Control Command

Nominal Output

Power during EPC

Reporting Period

Bands other than DCS 1 800 and PCS 1 900

Nominal Output

Power during EPC Reporting Period

DCS 1 800 & PCS 1 900

Pm,n

0

1 Step Decrease

13 dBm

14 dBm

P1,0

1

1 Step Decrease

11 dBm

12 dBm

P1,12

2

1 Step Decrease

9 dBm

10 dBm

P1,38

3

1 Step Decrease

7 dBm

8 dBm

P1,64

4

1 Step Decrease

5 dBm

6 dBm

P1,90

5

1 Step Decrease

5 dBm

4 dBm

P2,12

6

1 Step Decrease

5 dBm

2 dBm

P2,38

7

1 Step Decrease

5 dBm

0 dBm

P2,64

8

2 Step Increase

5 dBm

0 dBm

P2,90

9

2 Step Increase

9 dBm

4 dBm

P3,12

10

2 Step Increase

13 dBm

8 dBm

P3,38

11

2 Step Increase

17 dBm

12 dBm

P3,64

12

2 Step Increase

21 dBm

16 dBm

P3,90

13

2 Step Increase

Min (25 dBm, Pmax) for 8PSK

25 dBm for GMSK

20 dBm

P4,12

14

2 Step Increase

Min (29 dBm, Pmax) for 8PSK

29 dBm for GMSK

Min (24 dBm, Pmax) for 8PSK

24 dBm for GMSK

P4,38

15

4 Step Increase

Min (33 dBm, Pmax)

Min (28 dBm, Pmax)

P4,64

16

2 Step Decrease

Pmax

Pmax

P4,90

17

1 Step Increase

Pmax – 4 dB

Pmax – 4 dB

P5,12

18

2 Step Decrease

Pmax – 2 dB

Pmax – 2 dB

P5,38

19

3 Step Increase

Pmax – 6 dB

Pmax – 6 dB

P5,64

20

2 Step Decrease

Pmax

Pmax

P5,90

21

2 Step Decrease

Pmax – 4 dB

Pmax – 4 dB

P6,12

22

4 Step Increase

Pmax – 8 dB

Pmax – 8 dB

P6,38

23

No Change

Pmax

Pmax

P6,64

Pmax is the maximum power for the mobile class, see table 22.14-2.

Pm,n values refer to the power measured in the n-th frame of the m-th SACCH multiframe.

i) The SS shall make power measurements on each active, but unselected timeslot of the multislot configuration during frames 0 and 103 of each SACCH period when normal power control is active.

ii) The SS shall make power measurements on each active, but unselected timeslot of the multislot configuration during frame n of each SACCH period when enhanced power control is active.

iii) The SS shall make power measurements of the active and selected timeslot during frames 0 and 103 of each SACCH period when normal power control is active.

iv) The SS shall make power measurements on the active and selected timeslot during frame n of each SACCH period when enhanced power control is active. These power measurements shall be referred to as Pn,m respectively.

v) The SS shall note the MS TX power reported by the MS for the active and selected timeslot in the SACCH reporting period following the change from enhanced power control to normal power control.

vi) The SS shall note the MS TX power reported by the MS for the active and selected timeslot in the EPC reporting period following the change from normal power control to enhanced power control.

22.14.5 Test requirement

a) The powers measured for the active but unselected timeslots in steps i), ii) shall conform with the Pmax specification for the MS power class given in the table 22.14-2 (see 3GPP TS 45.005, clause 4.1.1).

Table 22.14-2: The MS maximum output power for GMSK and 8PSK modulation

Power

class

Bands except DCS 1 800 and PCS 1 900Nominal

Maximum

output

power

Bands except DCS 1 800 and PCS 1 900 Tolerance

(dB)

for normal

conditions

DCS 1 800

Nominal

Maximum

output

power

PCS 1900

Nominal

Maximum

Output

power

DCS 1 800 & PCS 1 900

Tolerance (dB)

for normal

conditions

1

‑ ‑ ‑ ‑ ‑ ‑

30 dBm

30 dBm

±2

2

39 dBm

24 dBm

24 dBm

±2

3

37 dBm

36 dBm

33 dBm

±2

4

33 dBm

±2

5

29 dBm

±2

E1

33 dBm

±2

30 dBm

30 dBm

±2

E2

27dBm

±3

26 dBm

26 dBm

-4/+3

E3

23dBm

±3

22 dBm

22 dBm

±3

In order to manage mobile terminal heat dissipation resulting from transmission on multiple uplink timeslots, the mobile station shall reduce its maximum output power on a per-assignment basis, see 3GPP TS 45.005, clause 4.1.1. For Rel-5 onwards these power reductions are shown in the table 22.14-3.

Table 22.14-3: From Rel-5 onwards: 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 Rel-5 onwards, the actual supported maximum output power shall be in the range indicated by the parameters XXX_MULTISLOT_POWER_PROFILE (See 3GPP TS 24.008) for n allocated uplink timeslots:

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

Where:

a = min (MAX_PWR, MAX_PWR + XXX_MULTISLOT_POWER_PROFILE – 10log(n));

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

XXX_MULTISLOT_POWER_PROFILE refers either to GMSK_MULTISLOT_POWER PROFILE or 8‑PSK_MULTISLOT_POWER_PROFILE depending on the modulation type concerned, and

XXX_MULTISLOT_POWER_PROFILE 0 = 0 dB;
XXX_MULTISLOT_POWER_PROFILE 1 = 2 dB;
XXX_MULTISLOT_POWER_PROFILE 2 = 4 dB;
XXX_MULTISLOT_POWER_PROFILE 3 = 6 dB.

For DCS 1 800 and PCS 1 900 frequency bands b = 3 dB, for all other bands b = 2 dB.

b) The power measured for the selected timeslot in step iii) shall be 14 dBm in the case of DCS 1 800 and PCS 1 900 and 13 dBm in the case of all other bands. In all cases the tolerance shall be ±3 dB.

c) The powers measured in step iv) shall conform to the power specifications in the following table 22.14-4.

Table 22.14-4: EPC Power Measurements

Pm,n

Bands other than DCS 1 800 and PCS 1 900

DCS 1 800/PCS 1 900

Tolerance

P1,0

13 dBm

14 dBm

±3 dB

P2,90

5 dBm

0 dBm

±5 dB

P4,90

Pmax

Pmax

±2 dB

P5,12

Pmax – 4 dB

Pmax – 4 dB

±3 dB

P5,38

Pmax – 2 dB

Pmax – 2 dB

±3 dB

P5,64

Pmax – 6 dB

Pmax – 6 dB

±3 dB

P5,90

Pmax

Pmax

±2 dB

P6,12

Pmax – 4 dB

Pmax – 4 dB

±3 dB

P6,38

Pmax – 8 dB

Pmax – 8 dB

±3 dB

P6,64

Pmax

Pmax

±2 dB

d) The power level reported by the MS in step v) shall be MS TX level corresponding to Pmax for the MS power class. See the table 22.14-2 in test requirement a).

e) The power level reported by the MS in step vi) shall be MS TX Level 8 in the case of DCS 1 800 and PCS 1 900 and MS TX Level 15 in the case of all other bands.