6.3.4 Power control
38.101-13GPPNRPart 1: Range 1 StandaloneRelease 17TSUser Equipment (UE) radio transmission and reception
6.3.4.1 General
The requirements on power control accuracy apply under normal conditions.
6.3.4.2 Absolute power tolerance
The absolute power tolerance is the ability of the UE transmitter to set its initial output power to a specific value for the first sub-frame (1 ms) at the start of a contiguous transmission or non-contiguous transmission with a transmission gap larger than 20 ms. The tolerance includes the channel estimation error.
The minimum requirement specified in Table 6.3.4.2-1 apply in the power range bounded by the minimum output power as specified in clause 6.3.1 and the maximum output power as specified in clause 6.2.1.
Table 6.3.4.2-1: Absolute power tolerance
|
Conditions |
Tolerance |
|
Normal |
± 9.0 dB |
6.3.4.3 Relative power tolerance
The relative power tolerance is the ability of the UE transmitter to set its output power in a target sub-frame (1 ms) relatively to the power of the most recently transmitted reference sub-frame (1 ms) if the transmission gap between these sub-frames is less than or equal to 20 ms.
The minimum requirements specified in Table 6.3.4.3-1 apply when the power of the target and reference sub-frames are within the power range bounded by the minimum output power as defined in clause 6.3.1 and the measured PUMAX as defined in clause 6.2.4.
To account for RF Power amplifier mode changes, 2 exceptions are allowed for each of two test patterns. The test patterns are a monotonically increasing power sweep and a monotonically decreasing power sweep over a range bounded by the requirements of minimum power and maximum power specified in clauses 6.3.1 and 6.2.1, respectively. For those exceptions, the power tolerance limit is a maximum of ± 6.0 dB in Table 6.3.4.3-1.
Table 6.3.4.3-1: Relative power tolerance
|
Power step P (Up or down) (dB) |
All combinations of PUSCH and PUCCH transitions (dB) |
All combinations of PUSCH/PUCCH and SRS transitions between sub-frames (dB) |
PRACH (dB) |
|
ΔP < 2 |
± 2.0 (NOTE) |
± 2.5 |
± 2.0 |
|
2 ≤ ΔP < 3 |
± 2.5 |
± 3.5 |
± 2.5 |
|
3 ≤ ΔP < 4 |
± 3.0 |
± 4.5 |
± 3.0 |
|
4 ≤ ΔP < 10 |
± 3.5 |
± 5.5 |
± 3.5 |
|
10 ≤ ΔP < 15 |
± 4.0 |
± 7.0 |
± 4.0 |
|
15 ≤ ΔP |
± 5.0 |
± 8.0 |
± 5.0 |
|
NOTE: For PUSCH to PUSCH transitions with the allocated resource blocks fixed in frequency and no transmission gaps other than those generated by downlink subframes, DwPTS fields or Guard Periods: for a power step ΔP ≤ 1 dB, the relative power tolerance for transmission is ± 0.7 dB. |
|||
6.3.4.4 Aggregate power tolerance
The aggregate power control tolerance is the ability of the UE transmitter to maintain its power in a sub-frame (1 ms) during non-contiguous transmissions within 21 ms in response to 0 dB commands with respect to the first UE transmission and all other power control parameters as specified in TS 38.213 [8] kept constant.
The minimum requirement specified in Table 6.3.4.4-1 apply in the power range bounded by the minimum output power as specified in clause 6.3.1 and the maximum output power as specified in clause 6.2.1.
Table 6.3.4.4-1: Aggregate power tolerance
|
TPC command |
UL channel |
Aggregate power tolerance within 21 ms |
|
0 dB |
PUCCH |
± 2.5 dB |
|
0 dB |
PUSCH |
± 3.5 dB |