6.3 Output power dynamics
36.1043GPPBase Station (BS) radio transmission and receptionEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TS
The requirements in clause 6.3 apply during the transmitter ON period. Transmit signal quality (as specified in clause 6.5) shall be maintained for the output power dynamics requirements of this Clause.
Power control is used to limit the interference level.
6.3.1 RE Power control dynamic range
The RE power control dynamic range is the difference between the power of an RE and the average RE power for a BS at maximum output power for a specified reference condition.
6.3.1.1 Minimum requirements
RE power control dynamic range:
Table 6.3.1.1-1 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 |
|
16QAM (sPDSCH) |
-3 |
+3 |
|
64QAM (PDSCH) |
0 |
0 |
|
64QAM (sPDSCH) |
0 |
0 |
|
256QAM (PDSCH) |
0 |
0 |
|
1024QAM (PDSCH) |
0 |
0 |
|
NOTE 1: The output power per carrier shall always be less or equal to the maximum output power of the base station. |
||
6.3.2 Total power dynamic range
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 1: The upper limit of the dynamic range is the OFDM symbol power for a BS at maximum output power. The lower limit of the dynamic range is the OFDM symbol power for a BS when one resource block is transmitted. The OFDM symbol shall carry PDSCH or sPDSCH and not contain RS, PBCH or synchronisation signals.
NOTE 2: The requirement does not apply to Band 46.
6.3.2.1 Minimum requirements
The downlink (DL) total power dynamic range for each E-UTRA carrier shall be larger than or equal to the level in Table 6.3.2.1-1.
Table 6.3.2.1-1 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 |
6.3.3 NB-IoT RB power dynamic range for in-band or guard band operation
The NB-IoT RB power dynamic range (or NB-IoT power boosting) for guard band operation is the difference between the power of NB-IoT RB (which occupies 180kHz in guard band of an E-UTRA carrier) and the average power over all RBs (from both NB-IoT and the E-UTRA carrier containing the NB-IoT RB).
The NB-IoT RB power dynamic range (or NB-IoT power boosting) for in-band operation is the difference between the average power of NB-IoT REs (which occupy certain REs in a RB of an E-UTRA carrier) and the average power over all REs (from both NB-IoT and the E-UTRA carrier containing the NB-IoT REs).
6.3.3.1 Minimum Requirement
NB-IoT power dynamic range shall be larger than or equal to +6dB, except for guard band operation with E-UTRA 5 MHz channel bandwidth signal where BS manufacturer shall declare the NB-IoT dynamic range power it could support. (in this version of the specification).
The +6 dB power dynamic range is only required for one NB-IoT RB for both in-band and guard band operation modes.
For guard band operation, this NB-IoT RB should be placed adjacent to the E-UTRA RB edge as close as possible (i.e., away from edge of channel bandwidth).