6.4 Output power dynamics

25.1423GPPBase Station (BS) conformance testing (TDD)Release 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

6.4.1 Inner loop power control

Inner loop power control is the ability of the BS transmitter to adjust its code domain power in response to the UL received signal.

For inner loop correction on the Downlink Channel, the base station adjusts the code domain power of a power controlled CCTrCH in response to each valid power control bit received from the UE on the Uplink Traffic Channel based on the mapping of the TPC bits in uplink CCTrCH to downlink CCTrCH. Inner loop control is based on SIR measurements at the UE receiver, and the corresponding TPC commands are generated by the UE.

6.4.2 Power control steps

6.4.2.1 Definition and applicability

The power control step is the step change in the DL code domain power in response to a TPC message from the UE.

6.4.2.2 Minimum Requirements

The power control step sizes in the DL shall be 1 dB, 2 dB and 3 dB.

The tolerance of the code domain power and the greatest average rate of change in code domain power due to the power control step shall be within the range shown in Table 6.3.

Table 6.3: Power control step size tolerance

Step size	Tolerance	Range of average rate of change in code domain power per 10 steps
Step size	Tolerance	Minimum	maximum
1 dB	± 0,5 dB	± 8 dB	± 12 dB
2 dB	± 0,75 dB	± 16 dB	± 24 dB
3 dB	± 1 dB	± 24 dB	± 36 dB

The normative reference for this requirement is TS 25.105 [1] subclause 6.4.2.1.

6.4.2.3 Test purpose

The DL power control is applied to adjust the BS code domain power to a value that is sufficiently high to generate a SIR at the UE receiver equal to the target SIR, while limiting the intercell interference.

The test purpose is to verify the ability of the BS to interpret received TPC commands in a correct way and to adjust its code domain power according to these commands with the specified accuracy.

6.4.2.4 Method of test

6.4.2.4.1 Initial conditions

6.4.2.4.1.0 General test conditions

Test environment: normal; see subclause 5.9.1.

RF channels to be tested: B, M and T; see subclause 5.3.

6.4.2.4.1.1 3,84 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Disable closed loop power control in the BS under test.

(3) Set the initial parameters of the BS transmitted signal according to table 6.4.

(4) Operate the BS in such a mode that it is able to interpret received TPC commands.

(5) Start BS transmission.

NOTE: The BS tester used for this test must have the ability:

– to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.4: Initial parameters of the BS transmitted signal for power control steps test

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slot carrying SCH	TS0
Time slots under test	TS i, i even and non zero
Number of DPCH in each time slot under test	1
DPCH power	Minimum
Data content of DPCH	real life (sufficient irregular)

6.4.2.4.1.2 1,28 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Disable closed loop power control in the BS under test.

(3) Set the initial parameters of the BS transmitted signal according to Table 6.4A at manufacturer’s declared output power, PRAT.

(4) Operate the BS in such a mode that it is able to interpret received TPC commands.

(5) Start BS transmission.

NOTE: The BS tester used for this test must have the ability

– to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.4A: Initial parameters of the BS transmitted signal for power control steps test for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: transmit, if i is 0, 4,5,6; receive, if i is 1,2,3.
Time slots under test	TS4, TS5 and TS6
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.2.4.1.3 7,68 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Disable closed loop power control in the BS under test.

(3) Set the initial parameters of the BS transmitted signal according to table 6.4B.

(4) Operate the BS in such a mode that it is able to interpret received TPC commands.

(5) Start BS transmission.

NOTE: The BS tester used for this test must have the ability:

– to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.4B: Initial parameters of the BS transmitted signal for power control steps test

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slot carrying SCH	TS0
Time slots under test	TS i, i even and non zero
Number of DPCH in each time slot under test	1
DPCH power	Minimum
Data content of DPCH	real life (sufficient irregular)

6.4.2.4.2 Procedure

6.4.2.4.2.1 3,84 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(2) Set the BS tester to produce a sequence of TPC commands related to the active DPCH. This sequence shall be transmitted to the BS within the odd time slots TS i (receive time slots of the BS) and shall consist of a series of TPC commands with content "Increase Tx power", followed by a series of TPC commands with content "Decrease Tx power". Each of these series should be sufficiently long so that the code domain power of the active DPCH is controlled to reach its maximum and its minimum, respectively.

(3) Measure the code domain power of the active DPCH over the 2464 active chips of each even time slot TS i (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(4) Based on the measurement made in step (3), calculate the power control step sizes and the average rate of change per 10 steps.

(5) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) to (4).

6.4.2.4.2.2 1,28 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(2) Set the BS tester to produce a sequence of TPC commands related to the active DPCH. This sequence shall be transmitted to the BS within receive time TS i slots of the BS and shall consist of a series of TPC commands with content "Decrease Tx power", followed by a series of TPC commands with content "Increase Tx power". Each of these series should be sufficiently long so that the code domain power of the active DPCH is controlled to reach its minimum and its maximum, respectively.

(3) Measure the code domain power of the active DPCH over the 848 active chips of each transmit time slot TS i of the BS (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(4) Based on the measurement made in step (3), calculate the power control step sizes and the average rate of change per 10 steps.

(5) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) to (4).

In addition, for a multi-band capable BS, the following steps shall apply:

(6) For multi-band capable BS and single band tests, repeat the tests per involved band with no carrier activated in the other band.

(7) For multi-band capable BS with separate antenna connector, the antenna connector not being under test shall be terminated.

6.4.2.4.2.3 7,68 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(3) Measure the code domain power of the active DPCH over the 4928 active chips of each even time slot TS i (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(4) Based on the measurement made in step (3), calculate the power control step sizes and the average rate of change per 10 steps.

(5) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) to (4).

6.4.2.5 Test Requirements

NOTE: If the Test Requirements below differ from the Minimum Requirement, then the Test Tolerance applied for this test is non-zero. The Test Tolerance for this test is defined in subclause 5.11 and the explanation of how the Minimum Requirement has been relaxed by the Test Tolerance is given in Annex D.

6.4.2.5.1 3,84 Mcps TDD option

For all measurements, the tolerance of the power control step sizes and the average rate of change per 10 steps shall be within the limits given in Table 6.5.

Table 6.5: Test Requirements for power control step size tolerance

Step size	Single step tolerance	Range of average rate of change in code domain power per 10 steps
Step size	Single step tolerance	Minimum	maximum
1dB	± 0,6 dB	± 7,7 dB	± 12,3 dB
2dB	± 0,85 dB	± 15,7 dB	± 24,3 dB
3dB	± 1,1 dB	± 23,7 dB	± 36,3 dB

In case, the power control step size is set to 3 dB, the number of power control steps feasible within the power control dynamic range of the BS under test may be less than 10. In this case, the evaluation of the average rate of change in code domain power shall be based on the number of power control steps actually feasible, and the permitted range of average rate of change shall be reduced compared to the values given in table 6.5 in proportion to the ratio (number of power control steps actually feasible /10).

EXAMPLE: If the number of power control steps actually feasible is 9, the minimum and maximum value of the range of average rate of change in code domain power are given by ±21,3 dB and ±32,7 dB, respectively.

6.4.2.5.2 1,28 Mcps TDD option

For all measurements, the tolerance of the power control step sizes and the average rate of change per 10 steps shall be within the limits given in Table 6.5.

EXAMPLE: If the number of power control steps actually feasible is 9, the minimum and maximum value of the range of average rate of change in code domain power are given by 21,6 dB and 32,4 dB, respectively.

6.4.2.5.3 7,68 Mcps TDD option

For all measurements, the tolerance of the power control step sizes and the average rate of change per 10 steps shall be within the limits given in Table 6.5.

6.4.3 Power control dynamic range

6.4.3.1 Definition and applicability

The power control dynamic range is the difference between the maximum and the minimum code domain power of one power controlled code channel for a specified reference condition.

6.4.3.2 Minimum Requirements

The DL power control dynamic range shall be greater than or equal to 30 dB.

The normative reference for this requirement is TS 25.105 [1] subclause 6.4.3.1.

6.4.3.3 Test purpose

The test purpose is to verify the ability of the BS to control the code domain power of a single code signal over the specified dynamic range.

6.4.3.4 Method of test

6.4.3.4.1 Initial conditions

6.4.3.4.1.0 General test conditions

Test environment: normal; see subclause 5.9.1.

RF channels to be tested: B, M and T; see subclause 5.3.

6.4.3.4.1.1 3,84 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Set the parameters of the BS transmitted signal according to table 6.6.

(3) Operate the BS in such a mode that it is able to interpret received TPC commands

(4) Start BS transmission.

NOTE: The BS tester used for this test must have the ability:

– to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.6: Parameters of the BS transmitted signal for power control dynamic range test

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slot carrying SCH	TS0
Time slots under test	TS i, i even and non zero
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.3.4.1.2 1,28 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Set the parameters of the BS transmitted signal according to Table 6.6A at manufacturer’s declared output power, PRAT.

(3) Operate the BS in such a mode that it is able to interpret received TPC commands

(4) Start BS transmission.

NOTE: The BS tester used for this test must have the ability

– to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.6A: Parameters of the BS transmitted signal for power control dynamic range test for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: transmit, if i is 0, 4,5,6; receive, if i is 1,2,3.
Time slots under test	TS4, TS5 and TS6
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.3.4.1.3 7,68 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Set the parameters of the BS transmitted signal according to table 6.6B.

(3) Operate the BS in such a mode that it is able to interpret received TPC commands

(4) Start BS transmission.

NOTE: The BS tester used for this test must have the ability:

– to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.6B: Parameters of the BS transmitted signal for power control dynamic range test

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slot carrying SCH	TS0
Time slots under test	TS i, i even and non zero
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.3.4.2 Procedure

6.4.3.4.2.1 3,84 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(2) Set the BS tester to produce a sequence of TPC commands related to the active DPCH, with content "Increase Tx power". This sequence shall be sufficiently long so that the code domain power of the active DPCH is controlled to reach its maximum, and shall be transmitted to the BS within the odd time slots TS i (receive time slots of the BS).

(3) Measure the code domain power of the active DPCH over the 2464 active chips of an even time slot TS i (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(4) Set the BS tester to produce a sequence of TPC commands related to the active DPCH, with content "Decrease Tx power". This sequence shall be sufficiently long so that the code domain power of the active DPCH is controlled to reach its minimum, and shall be transmitted to the BS within the odd time slots TS i (receive time slots of the BS).

(5) Measure the code domain power of the active DPCH over the 2464 active chips of an even time slot TS i (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(6) Determine the power control dynamic range by calculating the difference between the maximum code domain power measured in step (3) and the minimum code domain power measured in step (5).

(7) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) to (6).

6.4.3.4.2.2 1,28 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(2) Set the BS tester to produce a sequence of TPC commands related to the active DPCH, with content "Decrease Tx power". This sequence shall be sufficiently long so that the code domain power of the active DPCH is controlled to reach its minimum, and shall be transmitted to the BS within the receive time slots TS i of the BS.

(3) Measure the code domain power of the active DPCH over the 848 active chips of a transmit time slot TS i of the BS (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(4) Set the BS tester to produce a sequence of TPC commands related to the active DPCH, with content "Increase Tx power". This sequence shall be sufficiently long so that the code domain power of the active DPCH is controlled to reach its maximum, and shall be transmitted to the BS within the receive time slots TS i of the BS.

(5) Measure the code domain power of the active DPCH over the 848 active chips of a transmit time slot TS i of the BS (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(6) Determine the power control dynamic range by calculating the difference between the maximum code domain power measured in step (3) and the minimum code domain power measured in step (5).

(7) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) to (6).

In addition, for a multi-band capable BS, the following steps shall apply:

(8) For multi-band capable BS and single band tests, repeat the tests per involved band with no carrier activated in the other band.

(9) For multi-band capable BS with separate antenna connector, the antenna connector not being under test shall be terminated.

6.4.3.4.2.3 7,68 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(3) Measure the code domain power of the active DPCH over the 4928 active chips of an even time slot TS i (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(5) Measure the code domain power of the active DPCH over the 4928 active chips of an even time slot TS i (this excludes the guard period) by applying the global in-channel Tx test method described in Annex C.

(6) Determine the power control dynamic range by calculating the difference between the maximum code domain power measured in step (3) and the minimum code domain power measured in step (5).

(7) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) to (6).

6.4.3.5 Test Requirements

NOTE: If the Test Requirement below differs from the Minimum Requirement, then the Test Tolerance applied for this test is non-zero. The Test Tolerance for this test is defined in subclause 5.11 and the explanation of how the Minimum Requirement has been relaxed by the Test Tolerance is given in Annex D.

The power control dynamic range derived according to subclause 6.4.3.4.2 shall be greater than or equal to 29,7 dB

6.4.4 Minimum output power

6.4.4.1 Definition and applicability

The minimum controlled output power of the BS is when the power is set to a minimum value.

6.4.4.2 Minimum Requirements

The DL minimum output power shall be less than or equal to:

Maximum output power – 30 dB.

The normative reference for this requirement is TS 25.105 [1] subclause 6.4.4.1.

6.4.4.3 Test purpose

The test purpose is to verify the ability of the BS to reduce its output power to a specified value.

6.4.4.4 Method of test

6.4.4.4.1 Initial conditions

6.4.4.4.1.0 General test conditions

Test environment: normal; see subclause 5.9.1.

RF channels to be tested: B, M and T; see subclause 5.3.

6.4.4.4.1.1 3,84 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Set the parameters of the BS transmitted signal according to table 6.7.

(3) Operate the BS in such a mode that it is able to interpret received TPC commands

(4) Start BS transmission.

NOTE: The BS tester used for this test must have the ability:

– to analyse the output signal of the BS under test with respect to mean power;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.7: Parameters of the BS transmitted signal for minimum power test

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slot carrying SCH	TS0
Time slots under test	TS i, i even and non zero
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.4.4.1.2 1,28 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Set the parameters of the BS transmitted signal according to Table 6.7A at manufacturer’s declared output power, PRAT.

(3) Operate the BS in such a mode that it is able to interpret received TPC commands

(4) Start BS transmission.

NOTE: The BS tester used for this test must have the ability

– to analyse the output signal of the BS under test with respect to mean power;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.7A: Parameters of the BS transmitted signal for minimum power test for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, 3, 4, 5, 6: transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slots under test	TS4, TS5 and TS6
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.4.4.1.3 7,68 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test.

(2) Set the parameters of the BS transmitted signal according to table 6.7B.

(3) Operate the BS in such a mode that it is able to interpret received TPC commands

(4) Start BS transmission.

NOTE: The BS tester used for this test must have the ability:

– to analyse the output signal of the BS under test with respect to mean power;

– to simulate an UE with respect to the generation of TPC commands embedded in a valid UE signal.

Table 6.7B: Parameters of the BS transmitted signal for minimum power test

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slot carrying SCH	TS0
Time slots under test	TS i, i even and non zero
Number of DPCH in each time slot under test	1
Data content of DPCH	real life (sufficient irregular)

6.4.4.4.2 Procedure

6.4.4.4.2.1 3,84 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(2) Set the BS tester to produce a sequence of TPC commands related to all active DPCH, with content "Decrease Tx power". This sequence shall be sufficiently long so that the output power of all active DPCH is controlled to reach its minimum, and shall be transmitted to the BS within the odd time slots TS i (receive time slots of the BS).

(3) Measure the power of the BS output signal over the 2464 active chips of an even and non zero time slot TS i (this excludes the guard period), and with a measurement filter that has a RRC filter response with a roll off α = 0,22 and a bandwidth equal to the chip rate. The power is determined by calculating the RMS value of the signal samples at the measurement filter output taken at the decision points.

(4) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) and (3).

6.4.4.4.2.2 1,28 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(3) Measure the power of the BS output signal over the 848 active chips of a time slot TS i (this excludes the guard period), and with a measurement filter that has a RRC filter response with a roll off α = 0,22 and a bandwidth equal to the chip rate. The power is determined by calculating the RMS value of the signal samples at the measurement filter output taken at the decision points.

(4) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) and (3).

In addition, for a multi-band capable BS, the following steps shall apply:

(5) For multi-band capable BS and single band tests, repeat the tests per involved band with no carrier activated in the other band.

(6) For multi-band capable BS with separate antenna connector, the antenna connector not being under test shall be terminated.

6.4.4.4.2.3 7,68 Mcps TDD option

(1) Configure the BS transmitter to enable power control steps of size 1 dB.

(3) Measure the power of the BS output signal over the 4928 active chips of an even and non zero time slot TS i (this excludes the guard period), and with a measurement filter that has a RRC filter response with a roll off α = 0,22 and a bandwidth equal to the chip rate. The power is determined by calculating the RMS value of the signal samples at the measurement filter output taken at the decision points.

(4) Configure the BS transmitter to enable power control steps of 2 dB and of 3 dB, respectively, and repeat steps (2) and (3).

6.4.4.5 Test Requirements

For all measurements, the minimum output power derived in step (4) of subclause 6.4.4.4.2 shall be at least 29,3 dB below the maximum output power; see 6.2.

6.4.5 Primary CCPCH power

6.4.5.1 Definition and applicability

Primary CCPCH power is the code domain power of the Primary Common Control Physical Channel averaged over the transmit timeslot. Primary CCPCH power is signalled on the BCH.

6.4.5.2 Minimum Requirements

The error between the BCH-broadcast value of the Primary CCPCH power and the Primary CCPCH code domain power averaged over the timeslot shall not exceed the values in table 6.8. The error is a function of the output power averaged over the timeslot, Pout, and the manufacturer’s rated output power, PRAT.

Table 6.8: Errors between Primary CCPCH power and the broadcast value

Output power in slot, dB	PCCPCH power tolerance
PRAT – 3 < Pout ≤ PRAT + 2	+/- 2,5 dB
PRAT – 6 < Pout ≤ PRAT – 3	+/- 3,5 dB
PRAT – 13 < Pout ≤ PRAT – 6	+/- 5 dB

The normative reference for this requirement is TS 25.105 [1] subclause 6.4.5.

6.4.5.3 Test purpose

The code domain power of the Primary CCPCH received by the UE, together with the information on the Primary CCPCH nominal output power signaled on the BCH, are used by the UE for path loss estimation and adjustment of its own transmit power. Therefore, deviations of the Primary CCPCH code domain power from its nominal value are transposed by the UE into deviations from the wanted output power of the UE.

The test purpose is to verify that the Primary CCPCH code domain power remains within its specified tolerances.

6.4.5.4 Method of test

6.4.5.4.1 Initial conditions

6.4.5.4.1.0 General test conditions

Test environment: normal; see subclause 5.9.1.

RF channels to be tested: B, M and T; see subclause 5.3.

6.4.5.4.1.1 3,84 Mcps TDD option

(1) Connect the BS tester to the antenna connector of the BS under test. The BS tester must have the ability to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C.

(2) Set the parameters of the BS transmitted signal according to table 6.9.

Table 6.9: Parameters of the BS transmitted signal for Primary CCPCH power testing

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slots carrying PCCPCH	TS 0 and TS 8
Number of additional DPCH in TS 0 and TS 8	3
BS output power setting	PRAT
Relative power of PCCPCH	¼ of BS output power
Relative power of each DPCH in TS 0 and TS 8	¼ of BS output power
Data content of DPCH	real life (sufficient irregular)

6.4.5.4.1.2 1,28 Mcps TDD option

(2) Set the parameters of the BS transmitted signal according to Table 6.9A at manufacturer’s declared output power, PRAT.

Table 6.9A: Parameters of the BS transmitted signal for Primary CCPCH power testing for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slots carrying PCCPCH	TS 0
Relative power of PCCPCH	½ of BS output power
Data content of DPCH	real life (sufficient irregular)

6.4.5.4.1.3 7,68 Mcps TDD option

(2) Set the parameters of the BS transmitted signal according to table 6.9B.

Table 6.9B: Parameters of the BS transmitted signal for Primary CCPCH power testing

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slots carrying PCCPCH	TS 0 and TS 8
Number of additional DPCH in TS 0 and TS 8	3
BS output power setting	PRAT
Relative power of PCCPCH	¼ of BS output power
Relative power of each DPCH in TS 0 and TS 8	¼ of BS output power
Data content of DPCH	real life (sufficient irregular)

6.4.5.4.2 Procedure

6.4.5.4.2.1 3,84 Mcps TDD option

(1) Measure the PCCPCH code domain power in TS 0 and TS 8 by applying the global in-channel Tx test method described in Annex C.

(2) Reduce the base station output power by 2 dB, 5 dB and 13 dB, without changing the relative powers of the PCCPCH and the DPCHs, and repeat step (1) for each output power setting.

6.4.5.4.2.2 1,28 Mcps TDD option

(1) Measure the PCCPCH code domain power in TS 0 by applying the global in-channel Tx test method described in Annex C.

(2) Reduce the base station output power by 2 dB, 5 dB and 13 dB, without changing the relative powers of the PCCPCH and the DPCHs, and repeat step (1) for each output power setting.

In addition, for a multi-band capable BS, the following steps shall apply:

(3) For multi-band capable BS and single band tests, repeat the tests per involved band with no carrier activated in the other band.

(4) For multi-band capable BS with separate antenna connector, the antenna connector not being under test shall be terminated.

6.4.5.4.2.3 7,68 Mcps TDD option

(1) Measure the PCCPCH code domain power in TS 0 and TS 8 by applying the global in-channel Tx test method described in Annex C.

(2) Reduce the base station output power by 2 dB, 5 dB and 13 dB, without changing the relative powers of the PCCPCH and the DPCHs, and repeat step (1) for each output power setting.

6.4.5.5 Test Requirements

The Primary CCPCH power, measured according to subclause 6.4.5.4.2, shall be within the limits defined in table 6.10

Table 6.10: Test Requirements for errors between Primary CCPCH power and the broadcast value

Output power in slot, dB	PCCPCH power tolerance
PRAT – 3 < Pout ≤ PRAT + 2	+/- 3,3 dB
PRAT – 6 < Pout ≤ PRAT – 3	+/- 4,3 dB
PRAT – 13 < Pout ≤ PRAT – 6	+/- 5,8 dB

6.4.6 Differential accuracy of Primary CCPCH power

6.4.6.1 Definition and applicability

The differential accuracy of the Primary CCPCH power is the relative transmitted power accuracy of PCCPCH in consecutive frames when the nominal PCCPCH power is not changed.

6.4.6.2 Minimum Requirements

The differential accuracy of PCCPCH power shall be within ± 0,5 dB.

The normative reference for this requirement is TS 25.105 [1] subclause 6.4.6.

6.4.6.3 Test purpose

The power of the Primary CCPCH received by the UE, together with the information on the Primary CCPCH nominal transmit power signaled on the BCH, are used by the UE for path loss estimation and adjustment of its own transmit power. Therefore, a lack of accuracy of the Primary CCPCH power over time will result in unwanted fluctuations of the transmit power of the UE which may degrade system performance.

The test purpose is to verify that the differential accuracy of the Primary CCPCH power remains within its specified tolerances.

6.4.6.4 Method of test

6.4.6.4.1 Initial conditions

6.4.6.4.1.0 General test conditions

Test environment: normal; see subclause 5.9.1.

RF channels to be tested: B, M and T; see subclause 5.3.

6.4.6.4.1.1 3,84 Mcps TDD option

1) Connect the BS tester to the antenna connector of the BS under test. The BS tester must have the ability to analyze the output signal of the BS under test with respect to code domain power, by applying the global in-channel Tx test method described in Annex C.

2) Set the parameters of the BS transmitted signal according to table 6.10A.

Table 6.10A: Parameters of the BS transmitted signal for testing of differential accuracy of the Primary CCPCH power

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slots carrying PCCPCH	TS 0 and TS 8
Number of additional DPCH in TS 0 and TS 8	3
BS output power setting	PRAT
Relative power of PCCPCH	¼ of BS output power
Relative power of each DPCH in TS 0 and TS 8	¼ of BS output power
Data content of DPCH	real life (sufficient irregular)

6.4.6.4.1.2 1,28 Mcps TDD option

2) Set the parameters of the BS transmitted signal according to Table 6.10A at manufacturer’s declared output power, PRAT.

Table 6.10B: Parameters of the BS transmitted signal for testing of differential accuracy of the Primary CCPCH power for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slots carrying PCCPCH	TS 0
Relative power of PCCPCH	½ of BS output power
Data content of DPCH	real life (sufficient irregular)

6.4.6.4.1.3 7,68 Mcps TDD option

2) Set the parameters of the BS transmitted signal according to table 6.10C.

Table 6.10C: Parameters of the BS transmitted signal for testing of differential accuracy of the Primary CCPCH power

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 14: transmit, if i is even; receive, if i is odd.
Time slots carrying PCCPCH	TS 0 and TS 8
Number of additional DPCH in TS 0 and TS 8	3
BS output power setting	PRAT
Relative power of PCCPCH	¼ of BS output power
Relative power of each DPCH in TS 0 and TS 8	¼ of BS output power
Data content of DPCH	real life (sufficient irregular)

6.4.6.4.2 Procedure

6.4.6.4.2.1 3,84 Mcps TDD option

1) Measure the PCCPCH code domain power in TS 0 and TS 8 of consecutive frames by applying the global in-channel Tx test method described in Annex C.

2) Calculate the differential accuracy of the Primary CCPCH power by taking the the difference between the PCCPCH power measurement results of consecutive frames.

6.4.6.4.2.2 1,28 Mcps TDD option

1) Measure the PCCPCH code domain power in TS 0 of consecutive frames by applying the global in-channel Tx test method described in Annex C.

2) Calculate the differential accuracy of the Primary CCPCH power by taking the the difference between the PCCPCH power measurement results of consecutive frames.

In addition, for a multi-band capable BS, the following steps shall apply:

(3) For multi-band capable BS and single band tests, repeat the tests per involved band with no carrier activated in the other band.

(4) For multi-band capable BS with separate antenna connector, the antenna connector not being under test shall be terminated.

6.4.6.4.2.3 7,68 Mcps TDD option

1) Measure the PCCPCH code domain power in TS 0 and TS 8 of consecutive frames by applying the global in-channel Tx test method described in Annex C.

2) Calculate the differential accuracy of the Primary CCPCH power by taking the the difference between the PCCPCH power measurement results of consecutive frames.

6.4.6.5 Test Requirements

The differential accuracy of the Primary CCPCH power, measured according to subclause 6.4.6.4.2, shall be within ± 0,6 dB.