6.3.4 Power control

38.101-23GPPNRPart 2: Range 2 standaloneRelease 17TSUser Equipment (UE) radio transmission and reception

6.3.4.1 General

The requirements on power control accuracy apply under normal conditions and are defined as a directional requirement. The requirements are verified in beam locked mode on beam peak direction.

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 RSRP estimate.

The minimum requirements specified in Table 6.3.4.2-1 apply in the power range bounded by the minimum output power as specified in sub-clause 6.3.1 (‘Pmin‘) and the maximum output power as specified in sub-clause 6.2.1 as minimum peak EIRP (‘Pmax‘). The intermediate power point ‘Pint‘ is defined in table 6.3.4.2-2

Table 6.3.4.2-1: Absolute power tolerance

Power Range

Tolerance

Pint ≥ P ≥ Pmin

± 14.0 dB

Pmax ≥ P > Pint

± 12.0 dB

Table 6.3.4.2-2: Intermediate power point

Power Parameter

Value

Pint

Pmax – 12.0 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 sub-clause 6.3.1 and Pint as defined in sub-clause 6.3.4.2. The minimum requirements specified in Table 6.3.4.3-2 apply when the power of the target and reference sub-frames are within the power range bounded by Pint as defined in sub-clause 6.3.4.2 and the measured PUMAX as defined in sub-clause 6.2.4.

For a test pattern that is either a monotonically increasing or monotonically decreasing power sweep over the range specified for Tables 6.3.4.3-1 and 6.3.4.3-2, 3 exceptions are allowed for each of the test patterns. For these exceptions, the power tolerance limit is a maximum of ±11.0 dB.

Table 6.3.4.3-1: Relative power tolerance, Pint ≥ P ≥ Pmin

Power step ∆P (Up or down)

(dB)

All combinations of PUSCH and PUCCH, PUSCH/PUCCH and SRS transitions between sub-frames, PRACH (dB)

ΔP < 2

±5.0

2 ≤ ΔP < 3

±6.0

3 ≤ ΔP < 4

±7.0

4 ≤ ΔP < 10

±8.0

10 ≤ ΔP < 15

±10.0

15 ≤ ΔP

±11.0

NOTE: The requirements apply with ue-BeamLockFunction enabled.

Table 6.3.4.3-2: Relative power tolerance, PUMAX ≥ P > Pint

Power step ∆P (Up or down)

(dB)

All combinations of PUSCH and PUCCH, PUSCH/PUCCH and SRS transitions between sub-frames, PRACH (dB)

ΔP < 2

± 3.0

2 ≤ ΔP < 3

± 4.0

3 ≤ ΔP < 4

± 5.0

4 ≤ ΔP < 10

± 6.0

10 ≤ ΔP < 15

± 8.0

15 ≤ ΔP

± 9.0

NOTE 1: The requirements apply with ue-BeamLockFunction enabled.

NOTE 2: For PUSCH to PUSCH transitions with the allocated resource blocks fixed in frequency and no transmission gaps other than those generated by downlink subframes, guard periods: for a power step ΔP = 1 dB, the relative power tolerance for transmission is ± 1.0 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 21ms in response to 0 dB TPC commands with respect to the first UE transmission and all other power control parameters as specified in 38.213 kept constant.

The minimum requirements specified in Table 6.3.4.4-1 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 sub-clause 6.3.1 and Pint as defined in sub-clause 6.3.4.2. The minimum requirements specified in Table 6.3.4.4-2 apply when the power of the target and reference sub-frames are within the power range bounded by Pint as defined in sub-clause 6.3.4.2 and the maximum output power as specified in sub-clause 6.2.1.

Table 6.3.4.4-1: Aggregate power tolerance, Pint ≥ P ≥ Pmin

TPC command

UL channel

Aggregate power tolerance within 21 ms

0 dB

PUCCH

± 5.5 dB

0 dB

PUSCH

± 5.5 dB

Table 6.3.4.4-2: Aggregate power tolerance, Pmax ≥ P ≥ Pint

TPC command

UL channel

Aggregate power tolerance within 21 ms

0 dB

PUCCH

± 3.5 dB

0 dB

PUSCH

± 3.5 dB