6.6.2 Adjacent Channel Leakage power Ratio (ACLR)
36.1043GPPBase Station (BS) radio transmission and receptionEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TS
Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the filtered mean power centred on the assigned channel frequency to the filtered mean power centred on an adjacent channel frequency.
The requirements shall apply outside the Base Station RF Bandwidth or Radio Bandwidth whatever the type of transmitter considered (single carrier or multi-carrier) and for all transmission modes foreseen by the manufacturer’s specification.
For a E-UTRA or E-UTRA with NB-IoT (in-band and/or guard band) BS operating in non-contiguous spectrum, the ACLR also applies for the first adjacent channel inside any sub-block gap with a gap size Wgap ≥ 15MHz or Wgap ≥ 60MHz for Band 46. The ACLR requirement for the second adjacent channel applies inside any sub-block gap with a gap size Wgap ≥ 20 MHz or Wgap ≥ 80MHz for Band 46. The CACLR requirement in clause 6.6.2.2 applies in sub block gaps for the frequency ranges defined in Table 6.6.2.2-1/2/2a.
For a E-UTRA or E-UTRA with NB-IoT (in-band and/or guard band) BS operating in multiple bands, where multiple bands are mapped onto the same antenna connector, the ACLR also applies for the first adjacent channel inside any Inter RF Bandwidth gap with a gap size Wgap ≥ 15MHz. The ACLR requirement for the second adjacent channel applies inside any Inter RF Bandwidth gap with a gap size Wgap ≥ 20 MHz. The CACLR requirement in clause 6.6.2.2 applies in Inter RF Bandwidth gaps for the frequency ranges defined in Table 6.6.2.2-1/2.
The requirement applies during the transmitter ON period.
6.6.2.1 Minimum requirement
The ACLR is defined with a square filter of bandwidth equal to the transmission bandwidth configuration of the transmitted signal (BWConfig) centred on the assigned channel frequency and a filter centred on the adjacent channel frequency according to the tables below.
For Category A Wide Area BS, either the ACLR limits in the tables below or the absolute limit of -13dBm/MHz shall apply, whichever is less stringent.
For Category B Wide Area BS, either the ACLR limits in the tables below or the absolute limit of -15dBm/MHz shall apply, whichever is less stringent.
For Medium Range BS, either the ACLR limits in the tables below or the absolute limit of -25 dBm/MHz shall apply, whichever is less stringent.
For Local Area BS, either the ACLR limits in the tables below or the absolute limit of -32dBm/MHz shall apply, whichever is less stringent.
For Home BS, either the ACLR limits in the tables below or the absolute limit of -50dBm/MHz shall apply, whichever is less stringent.
The ACLR requirements in Tables 6.6.2.1-1 to 6.6.2.1-4 (except Table 6.6.2.1-2b) apply to BS that supports E-UTRA or E-UTRA with NB-IoT (in-band and/or guard band), in any operating band except for Band 46. The ACLR requirements for Band 46 are in Table 6.6.2.1-2a and 6.6.2.1-5. The ACLR requirements in Table 6.6.2.1-2b and 6.6.2.1-6 apply to BS that supports standalone NB-IoT.
For operation in paired spectrum, the ACLR shall be higher than the value specified in Table 6.6.2.1‑1.
Table 6.6.2.1-1: Base Station ACLR in paired spectrum
|
Channel bandwidth of E-UTRA lowest/highest carrier transmitted BWChannel [MHz] |
BS adjacent channel centre frequency offset below the lowest or above the highest carrier centre frequency transmitted |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
1.4, 3.0, 5, 10, 15, 20 |
BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
45 dB |
|
2 x BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
45 dB |
|
|
BWChannel /2 + 2.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
|
BWChannel /2 + 7.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
|
NOTE 1: BWChannel and BWConfig are the channel bandwidth and transmission bandwidth configuration of the E-UTRA lowest/highest carrier transmitted on the assigned channel frequency. NOTE 2: The RRC filter shall be equivalent to the transmit pulse shape filter defined in TS 25.104 [6], with a chip rate as defined in this table. |
||||
For operation in unpaired spectrum, the ACLR shall be higher than the value specified in Table 6.6.2.1‑2.
Table 6.6.2.1-2: Base Station ACLR in unpaired spectrum with synchronized operation
|
Channel bandwidth of E-UTRA lowest/highest carrier transmitted BWChannel [MHz] |
BS adjacent channel centre frequency offset below the lowest or above the highest carrier centre frequency transmitted |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
1.4, 3 |
BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
45 dB |
|
2 x BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
45 dB |
|
|
BWChannel /2 + 0.8 MHz |
1.28 Mcps UTRA |
RRC (1.28 Mcps) |
45 dB |
|
|
BWChannel /2 + 2.4 MHz |
1.28 Mcps UTRA |
RRC (1.28 Mcps) |
45 dB |
|
|
5, 10, 15, 20 |
BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
45 dB |
|
2 x BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
45 dB |
|
|
BWChannel /2 + 0.8 MHz |
1.28 Mcps UTRA |
RRC (1.28 Mcps) |
45 dB |
|
|
BWChannel /2 + 2.4 MHz |
1.28 Mcps UTRA |
RRC (1.28 Mcps) |
45 dB |
|
|
BWChannel /2 + 2.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
|
BWChannel /2 + 7.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
|
BWChannel /2 + 5 MHz |
7.68 Mcps UTRA |
RRC (7.68 Mcps) |
45 dB |
|
|
BWChannel /2 + 15 MHz |
7.68 Mcps UTRA |
RRC (7.68 Mcps) |
45 dB |
|
|
NOTE 1: BWChannel and BWConfig are the channel bandwidth and transmission bandwidth configuration of the E-UTRA lowest/highest carrier transmitted on the assigned channel frequency. NOTE 2: The RRC filter shall be equivalent to the transmit pulse shape filter defined in TS 25.105 [7], with a chip rate as defined in this table. |
||||
For operation in Band 46, the ACLR shall be higher than the value specified in Table 6.6.2.1‑2a.
Table 6.6.2.1-2a: Base Station ACLR in Band 46
|
Channel bandwidth of E-UTRA lowest/highest carrier transmitted BWChannel [MHz] |
BS adjacent channel centre frequency offset below the lowest or above the highest carrier centre frequency transmitted |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
10, 20 |
BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
35 dB |
|
2 x BWChannel |
E-UTRA of same BW |
Square (BWConfig) |
40 dB |
|
|
NOTE 1: BWChannel and BWConfig are the channel bandwidth and transmission bandwidth configuration of the E-UTRA lowest/highest carrier transmitted on the assigned channel frequency. |
||||
For standalone NB-IoT operation in paired spectrum, the ACLR shall be higher than the value specified in Table 6.6.2.1-2b.
Table 6.6.2.1-2b: Base Station ACLR for standalone NB-IoT operation in paired spectrum
|
Channel bandwidth of NB-IoT lowest/highest carrier transmitted BWChannel [kHz] |
BS adjacent channel centre frequency offset below the lowest or above the highest carrier centre frequency transmitted |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
200 |
300 kHz |
Standalone NB-IoT |
Square (180 kHz) |
40 dB |
|
500 kHz |
Standalone NB-IoT |
Square (180 kHz) |
50 dB |
For operation in non-contiguous paired spectrum or multiple bands, the ACLR shall be higher than the value specified in Table 6.6.2.1‑3.
Table 6.6.2.1-3: Base Station ACLR in non-contiguous paired spectrum or multiple bands
|
Sub-block or Inter RF Bandwidth gap size (Wgap) where the limit applies |
BS adjacent channel centre frequency offset below or above the sub-block edge or the Base Station RF Bandwidth edge (inside the gap) |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
Wgap ≥ 15 MHz |
2.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
Wgap ≥ 20 MHz |
7.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
NOTE: The RRC filter shall be equivalent to the transmit pulse shape filter defined in TS 25.104 [6], with a chip rate as defined in this table. |
||||
For operation in non-contiguous unpaired spectrum or multiple bands, the ACLR shall be higher than the value specified in Table 6.6.2.1‑4.
Table 6.6.2.1-4: Base Station ACLR in non-contiguous unpaired spectrum or multiple bands
|
Sub-block or Inter RF Bandwidth gap size (Wgap) where the limit applies |
BS adjacent channel centre frequency offset below or above the sub-block edge or the Base Station RF Bandwidth edge (inside the gap) |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
Wgap ≥ 15 MHz |
2.5 MHz |
5MHz E-UTRA carrier |
Square (BWConfig) |
45 dB |
|
Wgap ≥ 20 MHz |
7.5 MHz |
5MHz E-UTRA carrier |
Square (BWConfig) |
45 dB |
For operation in non-contiguous spectrum in Band 46, the ACLR shall be higher than the value specified in Table 6.6.2.1‑5.
Table 6.6.2.1-5: Base Station ACLR in non-contiguous spectrum in Band 46
|
Sub-block gap size (Wgap) where the limit applies |
BS adjacent channel centre frequency offset below or above the sub-block edge (inside the gap) |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
ACLR limit |
|
Wgap ≥ 60 MHz |
10 MHz |
20MHz E-UTRA carrier |
Square (BWConfig) |
35 dB |
|
Wgap ≥ 80 MHz |
30 MHz |
20MHz E-UTRA carrier |
Square (BWConfig) |
40 dB |
6.6.2.2 Cumulative ACLR requirement in non-contiguous spectrum
The following requirement applies for the sub-block or Inter RF Bandwidth gap sizes listed in Table 6.6.2.2-1/2/2a,
– Inside a sub-block gap within an operating band for a BS operating in non-contiguous spectrum.
– Inside an Inter RF Bandwidth gap for a BS operating in multiple bands, where multiple bands are mapped on the same antenna connector.
The Cumulative Adjacent Channel Leakage power Ratio (CACLR) in a sub-block gap or the Inter RF Bandwidth gap is the ratio of:
a) the sum of the filtered mean power centred on the assigned channel frequencies for the two carriers adjacent to each side of the sub-block gap or the Inter RF Bandwidth gap, and
b) the filtered mean power centred on a frequency channel adjacent to one of the respective sub-block edges or Base Station RF Bandwidth edges.
The assumed filter for the adjacent channel frequency is defined in Table 6.6.2.2-1/2/2a and the filters on the assigned channels are defined in Table 6.6.2.2-3.
For Wide Area Category A BS, either the CACLR limits in Table 6.6.2.2-1/2 or the absolute limit of -13dBm/MHz shall apply, whichever is less stringent.
For Wide Area Category B BS, either the CACLR limits in Table 6.6.2.2-1/2 or the absolute limit of -15dBm/MHz shall apply, whichever is less stringent.
For Medium Range BS, either the CACLR limits in Table 6.6.2.2-1/2/2a or the absolute limit of -25 dBm/MHz shall apply, whichever is less stringent.
For Local Area BS, either the CACLR limits in Table 6.6.2.2-1/2/2a or the absolute limit of -32 dBm/MHz shall apply, whichever is less stringent.
The ACLR requirements in Tables 6.6.2.2-1 and 6.6.2.2-2 apply to BS that supports E-UTRA, in any operating band except for Band 46. The ACLR requirements for Band 46 are in Table 6.6.2.2-2a.
For operation in non-contiguous spectrum or multiple bands, the CACLR for E-UTRA carriers located on either side of the sub-block gap or the Inter RF Bandwidth gap shall be higher than the value specified in Table 6.6.2.2-1/2.
Table 6.6.2.2-1: Base Station CACLR in non-contiguous paired spectrum or multiple bands
|
Sub-block or Inter RF Bandwidth gap size (Wgap) where the limit applies |
BS adjacent channel centre frequency offset below or above the sub-block edge or the Base Station RF Bandwidth edge (inside the gap) |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
CACLR limit |
|
5 MHz ≤ Wgap < 15 MHz |
2.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
10 MHz < Wgap < 20 MHz |
7.5 MHz |
3.84 Mcps UTRA |
RRC (3.84 Mcps) |
45 dB |
|
NOTE: The RRC filter shall be equivalent to the transmit pulse shape filter defined in TS 25.104 [6], with a chip rate as defined in this table. |
||||
Table 6.6.2.2-2: Base Station CACLR in non-contiguous unpaired spectrum or multiple bands
|
Sub-block or Inter RF Bandwidth gap size (Wgap) where the limit applies |
BS adjacent channel centre frequency offset below or above the sub-block edge or the Base Station RF Bandwidth edge (inside the gap) |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
CACLR limit |
|
5 MHz ≤ Wgap < 15 MHz |
2.5 MHz |
5MHz E-UTRA carrier |
Square (BWConfig) |
45 dB |
|
10 MHz < Wgap < 20 MHz |
7.5 MHz |
5MHz E-UTRA carrier |
Square (BWConfig) |
45 dB |
For operation in non-contiguous spectrum in Band 46, the CACLR for E-UTRA carriers located on either side of the sub-block gap shall be higher than the value specified in Table 6.6.2.2-2a.
Table 6.6.2.2-2a: Base Station CACLR in non-contiguous spectrum in Band 46
|
Sub-block gap size (Wgap) where the limit applies |
BS adjacent channel centre frequency offset below or above the sub-block edge (inside the gap) |
Assumed adjacent channel carrier (informative) |
Filter on the adjacent channel frequency and corresponding filter bandwidth |
CACLR limit |
|
20 MHz ≤ Wgap < 60 MHz |
10 MHz |
20MHz E-UTRA carrier |
Square (BWConfig) |
35 dB |
|
40 MHz < Wgap < 80 MHz |
30 MHz |
20MHz E-UTRA carrier |
Square (BWConfig) |
35 dB |
Table 6.6.2.2-3: Filter parameters for the assigned channel
|
RAT of the carrier adjacent to the sub-block or Inter RF Bandwidth gap |
Filter on the assigned channel frequency and corresponding filter bandwidth |
|
E-UTRA |
E-UTRA of same bandwidth |