9.4 OTA Output power dynamics
37.1053GPPActive Antenna System (AAS) Base Station (BS) transmission and receptionRelease 17TS
9.4.1 General
The requirements in subclause 9.4 apply during the transmitter ON period. Transmit signal quality (as specified in subclause 9.6) shall be maintained for the output power dynamics requirements. Power control is used to limit the interference level. The TA output power requirements are single direction requirements and apply to the beam peak directions associated with the beam direction pairs over the OTA peak directions set.
9.4.2 OTA UTRA Inner loop power control in the downlink
9.4.2.1 General
Inner loop power control in the downlink is the ability of the AAS BS transmitter to adjust the transmitter output power of a code channel in accordance with the corresponding TPC symbols received in the uplink.
9.4.2.2 Minimum requirement for MSR operation
For UTRA FDD operation; the minimum requirements for MSR AAS BS inner loop power control in the DL are the same as subclause 9.4.2.3.
This requirement does not apply to E-UTRA operation.
This requirement does not apply to NR operation.
9.4.2.3 Minimum requirement for single RAT UTRA operation
For UTRA FDD operation, the Single RAT AAS BS shall have the capability of setting the inner loop code domain power on each RIB with a step sizes of 1dB mandatory and 0.5, 1.5, 2.0 dB optional
a) The tolerance of the power control step due to inner loop power control shall be within the range shown in table 9.4.2.3-1.
b) The tolerance of the combined output power change due to inner loop power control shall be within the range shown in table 9.4.2.3-2.
Table 9.4.2.3-1: UTRA FDD power control step tolerance
|
Power control commands in the down link |
Transmitter power control step tolerance |
|||||||
|---|---|---|---|---|---|---|---|---|
|
2 dB step size |
1,5 dB step size |
1 dB step size |
0,5 dB step size |
|||||
|
Lower |
Upper |
Lower |
Upper |
Lower |
Upper |
Lower |
Upper |
|
|
Up (TPC command "1") |
+1,0 dB |
+3,0 dB |
+0,75 dB |
+2,25 dB |
+0,5 dB |
+1,5 dB |
+0,25 dB |
+0,75 dB |
|
Down (TPC command "0") |
-1,0 dB |
-3,0 dB |
-0,75 dB |
-2,25 dB |
-0,5 dB |
-1,5 dB |
-0,25 dB |
-0,75 dB |
Table 9.4.2.3-2: UTRA FDD aggregated power control step range
|
Power control commands in the down link |
Transmitter aggregated power control step change |
|||||||
|---|---|---|---|---|---|---|---|---|
|
2 dB step size |
1,5 dB step size |
1 dB step size |
0,5 dB step size |
|||||
|
Lower |
Upper |
Lower |
Upper |
Lower |
Upper |
Lower |
Upper |
|
|
Up (TPC command "1") |
+16 dB |
+24 dB |
+12 dB |
+18 dB |
+8 dB |
+12 dB |
+4 dB |
+6 dB |
|
Down (TPC command "0") |
-16 dB |
-24 dB |
-12 dB |
-18 dB |
-8 dB |
-12 dB |
-4 dB |
-6 dB |
9.4.2.4 Minimum requirement for single RAT E-UTRA operation
This requirement does not apply to E-UTRA operation.
9.4.3 OTA Power control dynamic range
9.4.3.1 General
The power control dynamic range is the difference between the maximum and the minimum code domain power of a code channel for a specified reference condition.
This requirement applies at each RIB supporting transmission in the operating band.
This requirement applies to UTRA operation only.
9.4.3.2 Minimum requirement for MSR operation
For UTRA FDD operation; the minimum requirements for MSR AAS BS power control dynamic range are the same as subclause 9.4.3.3
This requirement does not apply to E-UTRA operation.
This requirement does not apply to NR operation.
9.4.3.3 Minimum requirement for single RAT UTRA operation
Down link (DL) power control dynamic range shall be:
Maximum code domain power: Pmax,c,TRP – 3 dB or greater
Minimum code domain power: Pmax,c,TRP – 28 dB or less
9.4.3.4 Minimum requirement for single RAT E-UTRA operation
This requirement does not apply to E-UTRA operation.
9.4.4 OTA Total power dynamic range
9.4.4.1 General
The total power dynamic range is the difference between the maximum and the minimum output power for a specified reference condition.
This requirement applies at each RIB supporting transmission in the operating band.
NOTE 1: The upper limit of the dynamic range is the BS maximum output power (PRated,c,TRP). The lower limit of the dynamic range is the lowest minimum power from the AAS BS when no traffic channels are activated.
Particularly for E-UTRA, the total power dynamic range is the difference between the maximum and the minimum transmit power of an OFDM symbol for a specified reference condition.
NOTE 2: The upper limit of the dynamic range at a RIB is the OFDM symbol power at maximum output power (PRated,c,TRP) when transmitting on all RBs. The lower limit of the dynamic range at a RIB is the OFDM symbol power when one resource block is transmitted. The OFDM symbol carries PDSCH or sPDSCH and not contain RS, PBCH or synchronization signals.
9.4.4.2 Minimum requirement for MSR operation
For UTRA FDD operation; the minimum requirements for MSR AAS BS total power dynamic range are the same as subclause 9.4.4.3.
For E-UTRA operation; the minimum requirements for MSR AAS BS total power dynamic range are the same as subclause 9.4.4.4.
For NR operation, the minimum requirements for MSR AAS BS total power dynamic range are the same as those for BS type 1-O in TS 38.104 [28] subclause 9.4.3.2.
9.4.4.3 Minimum requirement for single RAT UTRA operation
The downlink (DL) total power dynamic range shall be 18 dB or greater.
9.4.4.4 Minimum requirement for single RAT E-UTRA operation
The downlink (DL) total power dynamic range for each E-UTRA carrier shall be larger than or equal to the level in table 9.4.4.4-1.
Table 9.4.4.4-1: E-UTRA BS total power dynamic range
|
E-UTRA channel bandwidth [MHz] |
Total power dynamic range (dB) |
|
1.4 |
7.7 |
|
3 |
11.7 |
|
5 |
13.9 |
|
10 |
16.9 |
|
15 |
18.7 |
|
20 |
20 |
The requirement does not apply to Band 46 nor Band 49.
9.4.5 OTA IPDL time mask
9.4.5.1 General
To support IPDL location method in UTRA FDD operation, the AAS BS shall interrupt all transmitted signals in the downlink (i.e. common and dedicated channels). The IPDL time mask specifies the limits at the RIB output power during these idle periods.
This requirement applies only to AAS BS supporting IPDL. The requirement applies at each RIB supporting transmission in the operating band.
9.4.5.2 Minimum requirement for MSR operation
For UTRA FDD operation; the minimum requirement for MSR AAS BS IPDL time mask is the same as subclause 9.4.5.3.
This requirement does not apply to E-UTRA operation.
This requirement does not apply to NR operation.
9.4.5.3 Minimum requirement for single RAT UTRA operation
The mean power measured over a period starting 27 chips after the beginning of the IPDL period and ending 27 chips before the expiration of the IPDL period shall be equal to or less than
Pmax,c,TRP – 35 dB
Figure 9.4.5.3-1: IPDL Time Mask
The requirement applies to all output powers within the total power dynamic range as specified in subclause 9.4.4.
9.4.5.4 Minimum requirement for single RAT E-UTRA operation
This requirement does not apply to E-UTRA operation.
9.4.6 OTA RE Power control dynamic range
9.4.6.1 General
The RE power control dynamic range is the difference between the power of an RE and the average RE power for an AAS BS at maximum output power (PRated,c,TRP) for a specified reference condition.
This requirement applies at each RIB supporting transmission in the operating band.
9.4.6.2 Minimum requirement for MSR operation
This requirement does not apply to UTRA operation.
For E-UTRA operation; the minimum requirements for MSR AAS BS RE power control dynamic range are the same as in subclause 9.4.6.4.
For NR operation, the minimum requirements for MSR AAS BS RE power control dynamic range are the same as those for BS type 1-O in TS 38.104 [28] subclause 9.4.2.2.
9.4.6.3 Minimum requirement for single RAT UTRA operation
This requirement does not apply to UTRA operation.
9.4.6.4 Minimum requirement for single RAT E-UTRA operation
The RE power control dynamic range is specified in table 9.4.6.4-1.
Table 9.4.6.4-1: E-UTRA BS RE power control dynamic range
|
Modulation scheme used on the RE |
RE power control dynamic range (dB) |
|
|
(down) |
(up) |
|
|
QPSK (PDCCH) |
-6 |
+4 |
|
QPSK (PDSCH) |
-6 |
+3 |
|
QPSK (sPDCCH) |
-6 |
+4 |
|
QPSK (sPDSCH) |
-6 |
+3 |
|
16QAM (PDSCH) |
-3 |
+3 |
|
16QAM (sPDSCH) |
-3 |
+3 |
|
64QAM (PDSCH) |
0 |
0 |
|
64QAM (sPDSCH) |
0 |
0 |
|
256QAM (PDSCH) |
0 |
0 |
|
1024QAM (PDSCH) |
0 |
0 |
|
NOTE: The output power per carrier (PRated,c,TRP) shall always be less or equal to the maximum output power of the base station (PRated,t,TRP). |
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