6.3.5F Power Control for category NB1 and NB2

36.1013GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception

Power control requirements in this clause apply for category NB1 and NB2 UE.

6.3.5F.1 Absolute power tolerance

The minimum requirement for absolute power tolerance is given in Table 6.3.5F.1-1 over the power range bounded by the Maximum output power as defined in subclause 6.2.2F and the Minimum output power as defined in subclause 6.3.2F.

Table 6.3.5F.1-1: Absolute power tolerance – I

Conditions	Tolerance
Normal	± 9.0 dB
Extreme	±12.0 dB

In case of -15 dB ≤ Ês/Iot < -6 dB, the absolute power tolerance given in Table 6.3.5F.1-2 applies if the UE transmit power is not mandated to be P_CMAX,c according to the UE uplink power control procedure or random access procedure in Section 16 of [6] (e.g. the lowest configured repetition level is used for NPRACH transmission or the number of repetitions of the allocated NPUSCH RUs is no more than 2).

Table 6.3.5F.1-2: Absolute power tolerance – II

Conditions	Tolerance
Normal	± 13.3 dB
Extreme	± 16.3 dB

6.3.5F.2 Relative power tolerance

Category NB1 and NB2 UE relative power control requirement is defined for NPRACH power step values of 0, 2, 4 and 6 dB. For NPRACH transmission, the relative tolerance is the ability of the UE transmitter to set its output power relatively to the power of the most recently transmitted preamble. The measurement period for the NPRACH preamble is specified in Table 6.3.4F.2-1.

The requirements specified in Table 6.3.5F.2-1 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 subclause 6.3.2F and the maximum output power as defined in subclause 6.2.2F.

Table 6.3.5F.2-1: Relative power tolerance for category NB1 and NB2 NPRACH transmission (normal conditions)

Power step P [dB]	NPRACH [dB]
ΔP = 0	±1.5
ΔP = 2	±2.0
ΔP = 4	±3.5
ΔP = 6	±4.0
NOTE: For extreme conditions an additional ± 2.0 dB relaxation is allowed.

The power step (ΔP) is defined as the difference in the calculated setting of the UE transmit power between the target and reference sub-frames. The error is the difference between ΔP and the power change measured at the UE antenna port with the power of the cell-specific reference signals kept constant. The error shall be less than the relative power tolerance specified in Table 6.3.5F.2-1.

6.3.5F.3 Aggregate power control tolerance for category NB1 and NB2

Category NB1 and NB2 aggregate power control tolerance is the ability of a UE to maintain its output power in non-contiguous transmission with respect to the first UE transmission, when the uplink power control parameters as defined in TS 36.213 are constant and α is set to 0.

6.3.5F.3.1 Minimum requirement

The UE shall meet the requirements specified in Table 6.3.5F.3.1-1 for aggregate power control over the power range bounded by the minimum output power as defined in subclause 6.3.2F and the maximum output power as defined in subclause 6.2.2F.

Table 6.3.5F.3.1-1: Aggregate power control tolerance for HD-FDD

UL channel	Aggregate power tolerance
	15 kHz / 12 tones within 53 ms	15 kHz / 1 tone within 104 ms
NPUSCH	±3.5 dB
NOTE: For five consecutive UE transmissions the transmission gaps are 12 ms for 12 tone and 16 ms for single tone transmissions. Uplink scheduling grant is transmitted via NPDCCH eight subframes before NPUSCH transmission.

Table 6.3.5F.3.1-2: Aggregate power control tolerance for TDD

UL channel	Aggregate power tolerance
	15 kHz / 12 tones within 81 ms	15 kHz / 1 tone within 177 ms
NPUSCH	±3.5 dB
NOTE: For five consecutive UE transmissions the transmission gaps are 19 ms for 12 tone and 23 ms for single tone transmissions. Uplink scheduling grant is transmitted via NPDCCH eight subframes before NPUSCH transmission.