9.7.4 OTA Spectrum emission mask

37.1053GPPActive Antenna System (AAS) Base Station (BS) transmission and receptionRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

9.7.4.1 General

This requirement is applicable for single RAT UTRA AAS BS operation only.

The spectrum emission mask minimum requirements are quoted as TRP unless otherwise stated.

9.7.4.2 Minimum requirement for MSR operation

There is no spectrum emission mask requirement for an MSR AAS BS.

9.7.4.3 Minimum requirement for single RAT UTRA operation

9.7.4.3.1 General

The spectrum emission mask requirements for a UTRA single RAT AAS BS is based upon the minimum requirement as specified in 3GPP TS 25.104 [2] or TS 25.105 [7], and for each RIB the emissions shall not exceed an AAS BS minimum requirement specified as 10log₁₀(4).

NOTE: Conformance to the AAS BS spectrum emission mask requirement can be demonstrated by meeting the spectrum emission mask power at each RIB shall be less than or equal to the AAS BS limit as defined in this subclause for the respective frequency span, by -10log₁₀(4)

9.7.4.3.2 Minimum requirements for single RAT UTRA FDD operation

The minimum requirement is specified in table’s 9.7.4.3.2-1 to 9.7.3.4.2-10 for the appropriate P_max,c,TRP, where:

– Δf is the separation between the carrier frequency and the nominal -3 dB point of the measuring filter closest to the carrier frequency.

– f_offset is the separation between the carrier frequency and the centre of the measurement filter;

– f_offset_max is either 12.5 MHz or the offset to the UMTS Tx band edge as defined in clause 5.2, whichever is the greater.

– Δf_max is equal to f_offset_max minus half of the bandwidth of the measuring filter.

Inside any Inter RF Bandwidth gaps with Wgap < 2×Δf_OBUE for a multi-band RIB, emissions shall not exceed the cumulative sum of the minimum requirements specified at the Base Station RF Bandwidth edges on each side of the Inter RF Bandwidth gap. The minimum requirements for Base Station RF Bandwidth edge is specified in tables 9.7.3.4.2-1 to 9.7.3.4.2-10 below, where in this case:

– Δf is equal to 2.5MHz plus the separation between the Base Station RF Bandwidth edge frequency and the nominal -3dB point of the measuring filter closest to the Base Station RF Bandwidth edge.

– f_offset is equal to 2.5MHz plus the separation between the Base Station RF Bandwidth edge frequency and the centre of the measuring filter.

– f_offset_max is either 12.5 MHz or the offset to the UMTS Tx band edge as defined in clause 5.2, whichever is the greater.

– Δf_max is equal to f_offset_max minus half of the bandwidth of the measuring filter.

For a multi-band RIB, the operating band unwanted emission minimum requirements apply also in a supported operating band without any carrier transmitted, in the case where there are carrier(s) transmitted in another supported operating band. In this case, no cumulative limit is applied in the inter-band gap between a supported downlink operating band with carrier(s) transmitted and a supported downlink operating band without any carrier transmitted and

– In case the inter-band gap between a downlink band with carrier(s) transmitted and a downlink band without any carrier transmitted is less than 2×Δf_OBUE , f_offset_max shall be the offset to the frequency Δf_OBUE outside the outermost edges of the two downlink operating bands and the operating band unwanted emission limit of the band where there are carriers transmitted, as defined in the tables of the present subclause, shall apply across both downlink bands.

– In other cases, the operating band unwanted emission limit of the band where there are carriers transmitted, as defined in the tables of the present subclause for the largest frequency offset (Δf_max), shall apply from Δf_OBUE below the lowest frequency, up to Δf_OBUE above the highest frequency of the downlink operating band without any carrier transmitted.

Inside any sub-block gap for a RIB operating in non-contiguous spectrum, emissions shall not exceed the cumulative sum of the minimum requirements specified for the adjacent sub blocks on each side of the sub-block gap. The minimum requirement for each sub block is specified in tables 9.7.4.3.2-1 to 9.7.4.3.2-10 below, where in this case:

– Δf is equal to 2.5MHz plus the separation between the sub block edge frequency and the nominal -3 dB point of the measuring filter closest to the sub block edge.

– f_offset is equal to 2.5MHz plus the separation between the sub block edge frequency and the centre of the measuring filter.

– f_offset_max is equal to the sub-block gap bandwidth minus half of the bandwidth of the measuring filter plus 2.5MHz.

– Δf_max is equal to f_offset_max minus half of the bandwidth of the measuring filter.

Figure 9.7.4.3.2-1: Spectrum emission mask

Table 9.7.4.3.2-1: Spectrum emission mask values, P_rated,c,TRP ≥ 49 dBm for UTRA FDD

Frequency offset of measurement filter -3 dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Minimum requirement (NOTE 1, 2)	Measurement bandwidth (NOTE 4)
2.5 MHz ≤ Δf < 2.7 MHz	2.515MHz ≤ f_offset < 2.715MHz	-8 dBm	30 kHz
2.7 MHz ≤ Δf < 3.5 MHz	2.715MHz ≤ f_offset < 3.515MHz		30 kHz
(NOTE 3)	3.515MHz ≤ f_offset < 4.0MHz	-20 dBm	30 kHz
3.5 MHz ≤ Δf < 7.5 MHz	4.0 MHz ≤ f_offset < 8.0MHz	-7 dBm	1 MHz
7.5 MHz ≤ Δf ≤ Δf_max	8.0 MHz ≤ f_offset < f_offset_max	-7 dBm	1 MHz
NOTE 1: For a RIB supporting non-contiguous spectrum operation the minimum requirement within sub-block gaps within any operating band is calculated as a cumulative sum of contributions from adjacent sub blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 12.5MHz from both adjacent sub blocks on each side of the sub-block gap, where the spurious emission minimum requirement s in subclause 9.7.6 shall be met. NOTE 2: For a multi-band RIB with Inter RF Bandwidth gap < 2×Δf_OBUE the minimum requirement within the Inter RF Bandwidth gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks or Base Station RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or Base Station RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or Base Station RF Bandwidth.

Table 9.7.4.3.2-2: Spectrum emission mask values, 45 dBm ≤ P_rated,c,TRP < 49 dBm for UTRA FDD bands

Frequency offset of measurement filter -3 dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	minimum requirement (NOTE 1, 2)	Measurement bandwidth (NOTE 4)
2.5 MHz ≤ Δf < 2.7 MHz	2.515MHz ≤ f_offset < 2.715MHz	-8 dBm	30 kHz
2.7 MHz ≤ Δf < 3.5 MHz	2.715MHz ≤ f_offset < 3.515MHz		30 kHz
(NOTE 3)	3.515MHz ≤ f_offset < 4.0MHz	-20 dBm	30 kHz
3.5 MHz ≤ Δf < 7.5 MHz	4.0 MHz ≤ f_offset < 8.0MHz	-7 dBm	1 MHz
7.5 MHz ≤ Δf ≤ Δf_max	8.0MHz ≤ f_offset < f_offset_max	P_rated,c,TRP – 56 dB	1 MHz
NOTE 1: For a RIB supporting non-contiguous spectrum operation the minimum requirement within sub-block gaps within any operating band is calculated as a cumulative sum of contributions from adjacent sub blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 12.5MHz from both adjacent sub blocks on each side of the sub-block gap, where the spurious emission minimum requirement in subclause 9.7.6 shall be met. NOTE 2: For a multi-band RIB with Inter RF Bandwidth gap < 2×Δf_OBUE the minimum requirement within the Inter RF Bandwidth gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks or Base Station RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or Base Station RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or Base Station RF Bandwidth.

Table 9.7.4.3.2-3: Spectrum emission mask values, 37 dBm ≤ P_rated,c,TRP < 45 dBm for UTRA FDD bands

Frequency offset of measurement filter -3 dB point,Δf	Frequency offset of measurement filter centre frequency, f_offset	Minimum requirement (NOTE 1, 2)	Measurement bandwidth (NOTE 4)
2.5 MHz ≤ Δf < 2.7 MHz	2.515MHz ≤ f_offset < 2.715MHz	P_rated,c,TRP – 53 dB	30 kHz
2.7 MHz ≤ Δf < 3.5 MHz	2.715MHz ≤ f_offset < 3.515MHz	P_rated,c,TRP-53dB-15*(f_offset/MHz-2,715)dB	30 kHz
(NOTE 3)	3.515MHz ≤ f_offset < 4.0MHz	P_rated,c,TRP – 65 dB	30 kHz
3.5 MHz ≤ Δf < 7.5 MHz	4.0 MHz ≤ f_offset < 8.0MHz	P_rated,c,TRP – 52 dB	1 MHz
7.5 MHz ≤ Δf ≤ Δf_max	8.0MHz ≤ f_offset < f_offset_max	P_rated,c,TRP – 56 dB	1 MHz
NOTE 1: For a RIB supporting non-contiguous spectrum operation the minimum requirement within sub-block gaps within any operating band is calculated as a cumulative sum of contributions from adjacent sub blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 12.5MHz from both adjacent sub blocks on each side of the sub-block gap, where the spurious emission minimum requirements in subclause 9.7.6 shall be met. NOTE 2: For a multi-band RIB with Inter RF Bandwidth gap < 2×Δf_OBUE the minimum requirement within the Inter RF Bandwidth gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks or Base Station RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or Base Station RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or Base Station RF Bandwidth.

Table 9.7.4.3.2-4: Spectrum emission mask values, P_rated,c,TRP < 37 dBm for UTRA FDD bands

Frequency offset of measurement filter -3 dB point, Δf	Frequency offset of measurement filter centre frequency, f_offset	Minimum requirement (NOTE 1, 2)	Measurement bandwidth (NOTE 4)
2.5 MHz ≤ Δf < 2.7 MHz	2.515MHz ≤ f_offset < 2.715MHz	-16 dBm	30 kHz
2.7 ≤ Δf < 3.5 MHz	2.715MHz ≤ f_offset < 3.515MHz		30 kHz
(NOTE 3)	3.515MHz ≤ f_offset < 4.0MHz	-28 dBm	30 kHz
3.5 MHz ≤ Δf < 7.5 MHz	4.0 MHz ≤ f_offset < 8.0MHz	-15 dBm	1 MHz
7.5 MHz ≤ Δf ≤ Δf_max	8.0MHz ≤ f_offset < f_offset_max	-19 dBm	1 MHz
NOTE 1: For a RIB supporting non-contiguous spectrum operation the minimum requirement within sub-block gaps within any operating band is calculated as a cumulative sum of contributions from adjacent sub blocks on each side of the sub-block gap, where the contribution from the far-end sub-block shall be scaled according to the measurement bandwidth of the near-end sub-block. Exception is f ≥ 12.5MHz from both adjacent sub blocks on each side of the sub-block gap, where the spurious emission minimum requirements in subclause 9.7.6 shall be met. NOTE 2: For a multi-band RIB with Inter RF Bandwidth gap < 2×Δf_OBUE the minimum requirement within the Inter RF Bandwidth gaps is calculated as a cumulative sum of contributions from adjacent sub-blocks or Base Station RF Bandwidth on each side of the Inter RF Bandwidth gap, where the contribution from the far-end sub-block or Base Station RF Bandwidth shall be scaled according to the measurement bandwidth of the near-end sub-block or Base Station RF Bandwidth.

For operation in band II, IV, V, X, XII, XIII, XIV, XXV and XXVI, the additional requirement in tables 9.7.4.3.2-5 to 9.7.4.3.2-7 apply in addition to the minimum requirements in tables 9.7.4.3.2-1 to 9.7.4.3.2-4.

Table 9.7.4.3.2-5: Additional spectrum emission minimum requirements for Bands II, IV, X, XXV

Frequency offset of measurement filter ‑3dB point, Δf

Frequency offset of measurement filter centre frequency, f_offset

Additional minimum requirement

Measurement bandwidth

(NOTE 4)

2.5 MHz ≤ Δf < 3.5 MHz

2.515MHz ≤ f_offset < 3.515MHz

-9 dBm

30 kHz

3.5 MHz ≤ Δf ≤ Δf_max

4.0MHz ≤ f_offset < f_offset_max

-7 dBm

1 MHz

Table 9.7.4.3.2-6: Additional spectrum emission minimum requirements for Bands V, XXVI

Frequency offset of measurement filter ‑3dB point, Δf

Frequency offset of measurement filter centre frequency, f_offset

Additional minimum requirement

Measurement bandwidth

(NOTE 4)

2.5 MHz ≤ Δf < 3.5 MHz

2.515MHz ≤ f_offset < 3.515MHz

-9 dBm

30 kHz

3.5 MHz ≤ Δf ≤ Δf_max

3.55MHz ≤ f_offset < f_offset_max

-7 dBm

100 kHz

Table 9.7.4.3.2-7: Additional spectrum emission minimum requirements for Bands XII, XIII, XIV

Frequency offset of measurement filter ‑3dB point, Δf

Frequency offset of measurement filter centre frequency, f_offset

Additional minimum requirement

Measurement bandwidth

(NOTE 4)

2.5 MHz ≤ Δf < 2.6 MHz

2.515MHz ≤ f_offset < 2.615MHz

-7 dBm

30 kHz

2.6 MHz ≤ Δf ≤ Δf_max

2.65MHz ≤ f_offset < f_offset_max

-7 dBm

100 kHz

In certain regions the following requirement may apply for protection of DTT. For a RIB operating in Band XX, the level of emissions in the band 470-790 MHz, measured in an 8MHz filter bandwidth on centre frequencies F_filter according to table 9.7.4.3.2-8, shall not exceed the emission TRP limits as specified in table 9.7.4.3.2-8

Table 9.7.4.3.2-8: Emissions levels for protection of DTT

Case	Measurement filter centre frequency	Condition on BS maximum aggregate EIRP / 10 MHz, P_{EIRP_10MHz} (NOTE)	Maximum Level P_EIRP,N,MAX	Measurement Bandwidth
A: for DTT frequencies where broadcasting is protected	N*8 + 306 MHz, 21 ≤ N ≤ 60	P_{EIRP_10MHz} ≥ 59 dBm	0 dBm	8 MHz
	N*8 + 306 MHz, 21 ≤ N ≤ 60	36 ≤ P_{EIRP_10MHz} < 59 dBm	P_{EIRP_10MHz} – 59 dBm	8 MHz
	N*8 + 306 MHz, 21 ≤ N ≤ 60	P_{EIRP_10MHz} < 36 dBm	-23 dBm	8 MHz
B: for DTT frequencies where broadcasting is subject to an intermediate level of protection	N*8 + 306 MHz, 21 ≤ N ≤ 60	P_{EIRP_10MHz} ≥ 59 dBm	10 dBm	8 MHz
	N*8 + 306 MHz, 21 ≤ N ≤ 60	36 ≤ P_{EIRP_10MHz} < 59 dBm	P_{EIRP_10MHz} – 49 dBm	8 MHz
	N*8 + 306 MHz, 21 ≤ N ≤ 60	P_{EIRP_10MHz} < 36 dBm	-13 dBm	8 MHz
C: for DTT frequencies where broadcasting is not protected	N*8 + 306 MHz, 21 ≤ N ≤ 60	N.A.	22 dBm	8 MHz
NOTE: P_{EIRP_10MHz} (dBm) is defined by the expression P_{EIRP_10MHz} = P_10MHz+ G_ant+ 6 dB for UTRA and P_{EIRP_10MHz} = P_10MHz+ G_ant+ 9 dB for E-UTRA, where G_ant is 17 dBi.

NOTE: The regional requirement is defined in terms of EIRP (effective isotropic radiated power), which is dependent on both the BS emissions at the antenna connector and the deployment (including antenna gain and feeder loss). The method outlined in annex B1 Indicates how the limit in table 9.7.4.3.2-8 demonstrates compliance to the regional requirement.

In certain regions, the following basic limits may apply to a RIB operating in Band XXXII within 1452-1492 MHz. The level of unwanted emissions, measured on centre frequencies f_offset with filter bandwidth, according to table 9.7.4.3.2-9, shall not exceed the maximum TRP limits indicated in the table.

Table 9.7.4.3.2-9: Declared frequency band XXXII unwanted emission within 1452-1492 MHz

Frequency offset of measurement filter centre frequency, f_offset	Maximum Level [dBm]	Measurement bandwidth
5 MHz	P_EIRP – 17 dBi + 6 dB	5 MHz
10 MHz	P_EIRP – 17 dBi + 6 dB	5 MHz
15 MHz ≤ f_offset ≤ f_offset_{max, B32}	P_EIRP – 17 dBi + 6 dB	5 MHz
NOTE: f_offset_{max, B32} denotes the frequency difference between the lower channel carrier frequency and 1454.5 MHz, and the frequency difference between the upper channel carrier frequency and 1489.5 MHz for the set channel position.

NOTE: The regional requirement, included in CEPT ECC Decision (13)03 [25], is defined in terms of EIRP per antenna, which is dependent on both the BS emissions at the antenna connector and the deployment (including antenna gain and feeder loss). The method outlined in annex B1 Indicates how the limit in table 9.7.4.3.2-9 demonstrates compliance to the regional requirement.

In certain regions, the following basic limit may apply to RIB operating in Band XXXII within 1452-1492 MHz for the protection of services in spectrum adjacent to the frequency range 1452-1492 MHz. The level of emissions, measured on centre frequencies F_filter with filter bandwidth according to table 9.7.4.3.2-10, shall not exceed the maximum emission TRP limits in the table. This requirement applies in the frequency range 1429-1518 MHz even though part of the range falls in the spurious domain.

Table 9.7.4.3.2-10: Frequency band XXXII declared emission outside 1452-1492 MHz

Filter centre frequency, F_filter	Maximum level [dBm]	Measurement bandwidth
1429.5 MHz ≤ F_filter ≤ 1448.5 MHz	P_EIRP – 17 dBi + 6 dB	1 MHz
F_filter = 1450.5 MHz	P_EIRP – 17 dBi + 6 dB	3 MHz
F_filter = 1493.5 MHz	P_EIRP – 17 dBi + 6 dB	3 MHz
1495.5 MHz ≤ F_filter ≤ 1517.5 MHz	P_EIRP – 17 dBi + 6 dB	1 MHz

NOTE: The regional requirement, included in CEPT ECC Decision (13)03 [25], is defined in terms of EIRP, which is dependent on both the BS emissions at the antenna connector and the deployment (including antenna gain and feeder loss). The method outlined in annex B1 Indicates how the limit in table 9.7.4.3.2-10 demonstrates compliance to the regional requirement.

Notes for the tables in this subclause:

NOTE 3: This frequency range ensures that the range of values of f_offset is continuous.

NOTE 4: As a general rule, the resolution bandwidth of the measuring equipment should be equal to the measurement bandwidth. However, to improve measurement accuracy, sensitivity and efficiency, the resolution bandwidth can be smaller than the measurement bandwidth. When the resolution bandwidth is smaller than the measurement bandwidth, the result should be integrated over the measurement bandwidth in order to obtain the equivalent noise bandwidth of the measurement bandwidth.

9.7.4.4 Minimum requirement for single RAT E-UTRA operation

There is no spectrum emission mask requirement for a single RAT E-UTRA AAS BS.