6.2 Base station output power
37.1043GPPMulti-Standard Radio (MSR) Base Station (BS) radio transmission and receptionNR, E-UTRA, UTRA and GSM/EDGERelease 17TS
Output power of the base station is the mean power delivered to a load with resistance equal to the nominal load impedance of the transmitter.
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.
The maximum total output power, Pmax, of the base station is the mean power level measured at the antenna connector during the transmitter ON period in a specified reference condition.
The maximum RAT output power, Pmax,RAT, of the base station is the mean power level measured at the antenna connector during the transmitter ON period for a specific RAT in a specified reference condition.
The maximum carrier output power, Pmax,c of the base station is the mean power level measured at the antenna connector during the transmitter ON period for a specific carrier in a specified reference condition.
The rated carrier output power, PRated,c, of the base station is the mean power level for a specific carrier that the manufacturer has declared to be available at the antenna connector during the transmitter ON period.
NOTE: For NB-IoT in-band and guard band operation, the LTE carrier and NB-IoT carrier shall be seen as a single carrier occupied LTE channel bandwidth, the output power over this carrier is shared between LTE and NB-IoT. For NB-IoT operation in NR in-band, the NR carrier and NB-IoT carrier shall be seen as a single carrier occupied NR channel bandwidth, the output power over this carrier is shared between NR and NB-IoT. This note is applied for Pout, Rated total output power, Pmax,c and Prated,c.
The rated carrier output power of the BS shall be as specified in Table 6.2-1.
Table 6.2-1 Base Station rated carrier output power
|
BS class |
PRated,c |
|
Wide Area BS |
(note) |
|
Medium Range BS |
≤+ 38 dBm |
|
Local Area BS |
≤+ 24 dBm |
|
NOTE: There is no upper limit for the rated carrier output power of the Wide Area Base Station. |
|
In addition, for Band 85 NB-IoT standalone operation, the BS rated output power limit of 43 dBm applies over the NB-IoT carriers in the range 728-729 MHz of the DL operating band. The BS output power limit of 43 dBm shall be considered as shared among all NB-IoT carriers in the 728-729 MHz frequency range or as the maximum value per NB-IoT carrier in the case where only one NB-IoT carrier is deployed in 728-729 MHz frequency range.
6.2.1 Minimum requirement
In normal conditions, the maximum carrier output power shall remain within +2 dB and -2 dB of the configured carrier power declared by the manufacturer.
In extreme conditions, maximum carrier output power shall remain within +2.5 dB and -2.5 dB of the configured carrier power declared by the manufacturer.
The definition of the output power parameters declared by the manufacturer can be found in TS 37.141 [10].
In certain regions, the minimum requirement for normal conditions may apply also for some conditions outside the range of conditions defined as normal.
6.2.2 Additional requirement (regional)
For Band 34 operation in Japan, the rated E-UTRA output power declared by the manufacturer shall be less than or equal to the values specified in Table 6.2.2-1.
Table 6.2.2-1: Regional requirements for Band 34 for rated output power declared by the manufacturer.
|
Channel bandwidth BWChannel [MHz] |
1.4 |
3 |
5 |
10 |
15 |
20 |
|
Maximum output power [W] |
N/A |
N/A |
20 |
40 |
60 |
N/A |
For Band 41 E-UTRA operation in Japan, the rated output power per BS declared by the manufacturer shall be less than or equal to the values specified in Table 6.2.2-2.
Table 6.2.2-2: Regional requirements for Band 41 for rated output power declared by the manufacturer.
|
Channel bandwidth BWChannel [MHz] |
1.4 |
3 |
5 |
10 |
15 |
20 |
|
Maximum output power [W] |
N/A |
N/A |
N/A |
20 |
N/A |
40 |
For Band 41 NR operation in Japan, the sum of Prated,c,AC over all antenna connectors declared by the manufacturer shall be equal to or less than 20 W per 10 MHz bandwidth.
6.2.3 E-UTRA minimum requirement for DL RS power
For E-UTRA, the minimum requirement for DL RS power is specified in TS 36.104 [4], subclause 6.5.4.
6.2.4 UTRA FDD minimum requirement for primary CPICH power
For UTRA FDD, the minimum requirements for primary CPICH power is specified in TS 25.104 [2], subclause 6.4.4.
6.2.4A UTRA FDD minimum requirement for secondary CPICH power
For UTRA FDD, the minimum requirements for secondary CPICH power is specified in TS 25.104 [2], subclause 6.4.4A.
6.2.5 UTRA TDD minimum requirement for primary CCPCH power
For UTRA TDD, the minimum requirements for Primary CCPCH power and Differential accuracy of primary CCPCH power specified in TS 25.105 [3], subclause 6.4.5 and 6.4.6 respectively.
6.2.6 NB-IoT minimum requirement for DL NRS power
For NB-IoT, the minimum requirement for DL NRS power is specified in TS 36.104 [4], subclause 6.5.4.