6.2 Base station output power

37.145-13GPPActive Antenna System (AAS) Base Station (BS) conformance testingPart 1: conducted conformance testingRelease 17TS

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

6.2.1 General

The configured carrier power is the target maximum power for a specific carrier for the operating mode set in the BS within the limits given by the manufacturer’s declaration.

6.2.2 Maximum output power

6.2.2.1 Definition and applicability

The rated carrier output power of the AAS BS shall be as specified in table 6.2.2.1-1.

Table 6.2.2.1-1: AAS Base Station rated output power limits for BS classes

AAS BS class	PRated,c,sys	PRated,c,TABC
Wide Area BS	(note)	(note)
Medium Range BS	≤ 38 dBm +10log(NTXU,counted)	≤ 38 dBm
Local Area BS	≤ 24 dBm +10log(NTXU,counted)	≤ 24 dBm
NOTE: There is no upper limit for the PRated,c,sys or PRated,c,TABC of the Wide Area Base Station.

The output power limit for the respective BS classes in table 6.2.2.1-1 shall be compared to the rated output power and the declared BS class. It is not subject to testing.

The requirement in clause 6.2.2.2 applies per TAB connector.

6.2.2.2 Minimum Requirement

The minimum requirement is in TS 37.105 [8], clause 6.2.2.2.

6.2.2.3 Test Purpose

The test purpose is to verify the accuracy of the maximum carrier output power per TAB connector (P_max,c,TABC) across the frequency range and under normal and extreme conditions for all TAB connectors in the AAS BS.

6.2.2.4 Method of test

6.2.2.4.1 Initial conditions

Test environment:

– normal; see clause B.2.

– extreme; see clauses B.3 and B.5.

RF channels to be tested:

– B, M and T; see clause 4.12.1

Base Station RF Bandwidth positions to be tested:

– B_RFBW, M_RFBW and T_RFBW for single band TAB connector(s) , see clause 4.12.1; B_RFBW_T’_RFBW and B’_RFBW_T_RFBW for multi-band TAB connector(s), see clause 4.12.1.

Under extreme test environment, it is sufficient to test on one RF channel or one Base Station RF bandwidth position, and with one applicable test configuration defined in clauses 4.11 and 5. Testing shall be performed under extreme power supply conditions, as defined in Annex B.5.

NOTE: Tests under extreme power supply conditions also test extreme temperatures.

6.2.2.4.2 Procedure

The minimum requirement is applied to all TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex clause D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect the power measuring equipment to the TAB connector(s) as shown in annex clause D.1.1. All TAB connectors not under test shall be terminated.

2) Set each TAB connector to output according to the applicable test configuration in clause 5 using the corresponding test models or set of physical channels in clause 4.12.2. For single carrier set the TAB connector to transmit at manufacturers declared rated carrier output power per TAB connector (P_Rated,c,TABC).

3) Measure the mean power for each carrier at each TAB connector.

In addition, for multi-band TAB connector(s), the following steps shall apply:

4) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.2.2.5 Test Requirements

In normal conditions, the measurement result in step 3 of clause 6.2.2.4.3 shall be:

– within +2.7 dB and -2.7 dB of the manufacturer’s rated carrier output power per TAB connector (P_Rated,c,TABC) for carrier frequency f ≤ 3.0 GHz.

– within +3.0 dB and -3.0 dB of the manufacturer’s rated carrier output power per TAB connector (P_Rated,c,TABC) for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

In extreme conditions, measurement result in step 3 of clause 6.2.2.4.3 shall be:

– within +3.2 dB and -3.2 dB of the manufacturer’s rated carrier output power per TAB connector (P_Rated,c,TABC) for carrier frequency f ≤ 3.0 GHz.

– within +3.5 dB and -3.5 dB of the manufacturer’s rated carrier output power per TAB connector (P_Rated,c,TABC) for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

6.2.3 UTRA FDD primary CPICH power

6.2.3.1 Definition and applicability

This requirement applies to the TAB connector group(s) transmitting primary CPICH.

Primary CPICH (P-CPICH) power is the code domain power of the Primary Common Pilot Channel summed over the TAB connectors transmitting the P-CPICH for a cell. P-CPICH power is indicated on the BCH.

NOTE 1: A TAB connector group may comprise all TAB connectors.

NOTE 2: A TAB connector may be mapped to several groups.

NOTE 3: The manufacturer declares the TAB connector mapping to the P-CPICH transmission group(s) as specified in clause 4.10.

6.2.3.2 Minimum requirement

The minimum requirement for UTRA FDD operation is in TS 37.105 [8], clause 6.2.3.

There is no P-CPICH power requirement for UTRA TDD 1,28 Mcps option operation.

There is no P-CPICH power requirement for E-UTRA operation.

There is no P-CPICH power requirement for NR operation.

6.2.3.3 Test purpose

The test purpose is to verify that the UTRA FDD primary CPICH power is within the limits specified by the minimum requirement.

6.2.3.4 Method of test

6.2.3.4.1 Initial conditions

Test environment:

– normal; see annex B.

RF channels to be tested:

– B, M and T; see clause 4.12.1.

Disable inner loop power control.

Set the TAB connectors in the P-CPICH transmission group (see table 4.10-1, D6.45) to output a signal in accordance to TM2, in TS 25.141 [18], clause 6.1.1.2.

6.2.3.4.2 Procedure

The minimum requirement is applied to all TAB connectors in the TAB connector group(s) transmitting primary CPICH. TAB connectors may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex clause D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect TAB connector to code domain analyser as shown in annex clause D.1.1. All TAB connectors not under test shall be terminated.

2) Set the TAB connector to transmit at manufacturers declared rated carrier output power per TAB connector (P_Rated,c,TABC). Measure the P-CPICH power in one timeslot on each of the TAB connector(s) transmitting the P‑CPICH according to annex E in TS 25.141 [18].

In addition, for multi-band TAB connector(s), the following steps shall apply:

3) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.2.3.5 Test requirements

For UTRA FDD the test requirement for CPICH power is:

Either:

The sum of the measured P-CPICH code domain power on each of the TAB connectors transmitting the P-CPICH shall be:

Within ±2.9 dB of the configured absolute value for carrier frequency f ≤ 3.0 GHz.

Within ±3.2 dB of the configured absolute value for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

The measured P-CPICH code domain power on each of the TAB connectors transmitting the P-CPICH shall be:

Within ±2.9 dB of the configured absolute value for carrier frequency f ≤ 3.0 GHz.

Within ±3.2 dB of the configured absolute value for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

NOTE: If the above Test Requirement 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 clause 4.1.2 and the explanation of how the Minimum Requirement has been relaxed by the Test Tolerance is given in annex C.

6.2.4 UTRA TDD primary CCPCH power

6.2.4.1 Definition and applicability

This requirement applies to the TAB connector group(s) transmitting primary CCPCH. It comprises primary CCPCH (PCCPCH) absolute power accuracy, and differential accuracy.

Primary CCPCH power is the code domain power of the primary common control physical channel averaged over the transmit timeslot and summed over the TAB connectors transmitting the PCCPCH for a cell. Primary CCPCH power is signalled over the BCH.

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.

NOTE 1: A TAB connector group may comprise all TAB connectors.

NOTE 2: A TAB connector may be mapped to several groups.

NOTE 3: The manufacturer declares the TAB connector mapping to the PCCPCH transmission group(s). See clause 4.10.

6.2.4.2 Minimum requirement

The minimum requirement for UTRA TDD 1,28 Mcps option operation is in TS 37.105 [8], clause 6.2.4.

There is no PCCPCH power requirement for UTRA FDD operation.

There is no PCCPCH power requirement for E-UTRA operation.

There is no PCCPCH power requirement for NR operation.

6.2.4.3 Test purpose

The test purpose is to verify that the UTRA TDD primary CCPCH power is within the limits specified by the minimum requirement.

6.2.4.4 Method of test

6.2.4.4.1 Initial conditions

Test environment:

– normal; see annex B.

RF channels to be tested:

– B, M and T; see clause 4.12.1

Set the TAB connectors in the PCCPCH transmission group (see table 4.10-1, D6.47) to output a signal in accordance to table 6.2.4.4.1-1.

Table 6.2.4.4.1-1: 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	1/2 of BS output power
Data content of DPCH	real life (sufficient irregular)

6.2.4.4.2 Procedure

The minimum requirement is applied to all TAB connectors in the TAB connector group(s) transmitting primary CCPCH. TAB connectors may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex clause D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

The requirement has both an absolute accuracy requirement and a differential accuracy requirement which are measured at the same time.

1) Connect TAB connector to code domain analyser as shown in clause D.1.1. All TAB connectors not under test shall be terminated.

2) Set the TAB connector to transmit at manufacturers declared rated carrier output power per TAB connector (PRated,c,TABC).

3) Measure the CCPCH power in one timeslot on each of the TAB connector(s) transmitting the PCCPCH according to annex E in TS 25.142 [20].

4) Measure the PCCPCH code domain power in TS 0 of consecutive frames by applying the global in-channel Tx test method described in annex E in TS 25.142 [20].

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

In addition, for multi-band TAB connector(s), the following steps shall apply:

6) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.2.4.5 Test requirements

For UTRA TDD 1,28 Mcps option the test requirement for PCCPCH power is:

Either:

The sum of the measured PCCPCH code domain power on each of the TAB connectors transmitting the PCCPCH shall be within the limits defined in table 6.2.4.5-1.

The measured PCCPCH code domain power on each of the TAB connectors transmitting the PCCPCH shall be within the tolerance indicated in table 6.2.4.5-1.

Table 6.2.4.5-1: Test Requirements for errors between
Primary CCPCH power and the broadcast value

Output power in slot, dB	PCCPCH power tolerance
P_{Rated,t,group} – 3 < Pout ≤ P_{Rated,t,group} +2	±3.3 dB
P_{Rated,t,group} – 6 < Pout ≤ P_{Rated,t,group} -3	±4.3 dB
P_{Rated,t,group} – 13 < Pout ≤ P_{Rated,t,group} -6	±5.8 dB
NOTE: P_{Rated,t,group} is the power sum of P_Rated,t,TABC of all the TAB connectors in the group transmitting PCCPCH.

The differential accuracy of the Primary CCPCH power, shall be within ±0.6 dB.

6.2.5 UTRA FDD additional CPICH power for MIMO mode

6.2.5.1 Definition and applicability

This clause includes requirements on secondary CPICH power level, for two and four TAB connector groups, as well as Demodulation CPICH requirements. The requirements apply to all TAB connector groups associated with UTRA FDD MIMO transmission as "antenna 2", "antenna 3" or "antenna 4" in the AAS BS.

The concept of "antenna 2", "antenna 3" and "antenna 4" is described in TS 25.104 [2]. The group(s) of TAB connectors mapped to P-CPICH transmission (see table 4.10-1 D6.45) represents "antenna 1".

NOTE 1: The manufacturer declares the mapping of TAB connectors to "antenna 1", "antenna 2", "antenna 3" and "antenna 4" (as defined in TS 25.331 [16]) where applicable for AAS BS capable of UTRA FDD operation. The required declarations are specified clause 4.10.

For UTRA FDD AAS BS operating only "antenna 1" and "antenna 2", the secondary CPICH (S-CPICH) power is the code domain power of the Secondary Common Pilot Channel. S-CPICH power is equal to the (dB) sum of the P‑CPICH power and the power offset, which are signalled to the UE. The power offset is signalled in the IE "Power Offset for S-CPICH for MIMO", for MIMO mode as defined in clause 10.3.6.41b in TS 25.331 [16].

When the UE supports MIMO mode with four BS transmit antennas, the power offset of S-CPICH on antenna 2 is signalled in the IE "Power Offset for S-CPICH for MIMO mode with four transmit antennas on Antenna2" as defined in clause 10.3.6.143 in TS 25.331 [16]. The power offset of S-CPICH on antenna 3 and 4 is signalled in the IE "Common Power Offset for S-CPICH for MIMO mode with four transmit antennas on antenna 3 and 4", as defined in clause 10.3.6.143 in TS 25.331 [16].

Demodulation CPICH (D-CPICH) power is the code domain power of the Demodulation Common Pilot Channel. D‑CPICH power is equal to the (dB) sum of the P-CPICH power and the power offset, which are signalled to the UE. The power offset of D-CPICH on antenna 3 and 4 is signalled in the IE "Common Power Offset for D-CPICH for MIMO mode with four transmit antennas on antenna 3 and 4", as defined in clause 10.3.6.143 in TS 25.331 [16].

NOTE 2: The accuracy level of the power offset for S-CPICH may affect both MIMO HS-DSCH demodulation and CQI reporting performance.

NOTE 3: The accuracy level of the power offset for D-CPICH transmitted on antennas 3 and 4 may affect both MIMO HS-DSCH demodulation and CQI reporting performance.

NOTE 4: At high geometry level PDSCH performance may be affected if D-CPICH is not scheduled.

NOTE 5: A TAB connector group may comprise all TAB connectors.

NOTE 6: A TAB connector may be mapped to several groups.

6.2.5.2 Minimum requirement

The minimum requirement for UTRA FDD operation is in TS 37.105 [8], clause 6.2.5.3.

There is no CPICH power requirement for UTRA TDD 1,28 Mcps option operation.

There is no CPICH power requirement for E-UTRA operation.

There is no CPICH power requirement for NR operation.

6.2.5.3 Test purpose

The test purpose is to verify that the UTRA FDD CPICH power for MIMO mode is within the limits specified by the minimum requirement.

6.2.5.4 Method of test

6.2.5.4.1 Initial conditions

Test environment:

– normal; see annex B.

RF channels to be tested:

– B, M and T; see clause 4.12.1.

Disable inner loop power control.

Set the TAB connectors in the P-CPICH transmission group (see table 4.10-1, D6.45) and the TAB connectors in the S‑CPICH transmission groups (see table 4.10-1, D6.49), to output a signal in accordance to TM2, in TS 25.141 [18], clause 6.1.1.2.

NOTE: Although the S-CPICH transmission groups are referred to as S-CPICH as the same TM2 is used for the test, the signal being measured on the S-CPICH transmission groups is actually a P-CPICH signal.

6.2.5.4.2 Procedure

The minimum requirement is applied to all TAB connectors in the P-CPICH transmission group transmitting primary CPICH and the TAB connectors in the S-CPICH transmission groups. TAB connectors may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in clause D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect TAB connector to code domain analyser as shown in clause D.1.1. All TAB connectors not under test shall be terminated.

2) Set the TAB connector to transmit at manufacturers declared rated carrier output power per TAB connector (P_Rated,c,TABC).

3) Measure the P-CPICH power in one timeslot on each of the TAB connector(s) in the P-CPICH transmission groups according to annex E in TS 25.141 [18].

4) Measure the P-CPICH power in the same timeslot as step 2 on each of the TAB connector(s) in each of the S‑CPICH transmission groups according to annex E in TS 25.141 [18]. Depending on the MIMO support (see table 4.10-1, D6.49), for MIMO mode there is a single S-CPICH transmission group representing "antenna 2" and for MIMO with 4 transmit antennas there are three S-CPICH transmission groups representing "antenna 2", "antenna 3" and "antenna 4".

In addition, for multi-band TAB connector(s), the following steps shall apply:

5) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.2.5.5 Test requirements

For UTRA FDD the test requirement for CPICH power for MIMO mode is:

Either:

The difference between the sums of the measured P-CPICH code domain power on each of the TAB connectors in the P-CPICH transmission group or the S-CPICH transmission groups shall be:

Within ±2.7 dB for carrier frequency f ≤ 3.0 GHz.

Within ±3.0 dB for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

The difference between the measured P-CPICH code domain power on any 2 TAB connectors in either the P-CPICH transmission group or the S-CPICH transmission group(s) with corresponding beamforming weights shall be:

Within ±2.7 dB for carrier frequency f ≤ 3.0 GHz.

Within ±3.0 dB for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

6.2.6 E-UTRA DL RS power

6.2.6.1 Definition and applicability

This requirement applies to the TAB connector group(s) transmitting primary DL RS.

The DL RS power is the resource element power of the Downlink Reference Symbol summed over the group of TAB connectors transmitting the DL RS for a cell.

The absolute DL RS power is indicated on the DL-SCH. The absolute accuracy is defined as the maximum deviation between the DL RS power indicated on the DL-SCH and the DL RS power of each E-UTRA carrier.

NOTE 1: A TAB connector group may comprise all TAB connectors.

NOTE 2: A TAB connector may be mapped to several groups.

NOTE 3: The manufacturer declares the TAB connector mapping to the DL RS transmission group(s).

6.2.6.2 Minimum requirement

The minimum requirement for E-UTRA operation is in TS 37.105 [8], clause 6.2.6.

There is no DL RS power requirement for UTRA FDD operation.

There is no DL RS power requirement for UTRA TDD 1,28 Mcps option operation.

There is no DL RS power requirement for NR operation.

6.2.6.3 Test purpose

The test purpose is to verify that the E-UTRA FDD DL RS power is within the limits specified by the minimum requirement.

6.2.6.4 Method of test

6.2.6.4.1 Initial conditions

Test environment:

– normal; see annex B.

RF channels to be tested:

– B, M and T; see clause 4.12.1.

Set the TAB connectors in the DL RS transmission group (see table 4.10-1, D6.54) to output a signal in accordance to E‑TM 1.1, in TS 36.141 [17] clause 6.1.1.1.

6.2.6.4.2 Procedure

The minimum requirement is applied to all TAB connectors in the TAB connector group(s) transmitting primary CPICH. TAB connectors may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in clause D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) Connect TAB connector to code domain analyser as shown in clause D.1.1. All TAB connectors not under test shall be terminated.

2) Set the TAB connector to transmit at manufacturers declared rated carrier output power per TAB connector (P_Rated,c,TABC).

3) Measure the DL RS power on each of the TAB connector(s) transmitting the DL RS according to annex F in TS 36.141 [17].

In addition, for multi-band TAB connector(s), the following steps shall apply:

6.2.6.5 Test requirements

The DL RS power of each E-UTRA carrier shall be:

within ± 2.9 dB of the DL RS power indicated on the DL-SCH for carrier frequency f ≤ 3.0 GHz.

within ± 3.2 dB of the DL RS power indicated on the DL-SCH for carrier frequency 3.0 GHz < f ≤ 4.2 GHz.

Alternatively, the DL RS power measured at each TAB connector shall be within ± 2.9 dB for f ≤ 3.0 GHz and within ± 3.2 dB for 3.0 GHz < f ≤ 4.2 GHz of the DL RS power level indicated on the DL-SCH multiplied by a TAB connector specific beamforming weight. Beamforming weights on P-CPICH are set by the AAS BS to achieve an intended radiated pattern.