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36.851
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6.1.6.1.2 Co-existence studies for CA_1-26
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Although Band 1 and Band 26 are a High-Low band combination, the harmonic frequencies do not fall into the frequency ranges of both bands as observed in table 6.1.6.1.2-1. Therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.6.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
1
1920
1980
2110
2170
3840
3960
5760
5940
4220
4340
6330
6510
26
814
849
859
894
1628
1698
2442
2547
1718
1788
2577
2682
Table 6.1.6.1.2-2 gives the frequency range of the third and fifth order intermodulation products when two simultaneous DLs are active in Band 1 and band 26. It can be seen that the intermodulation products are not falling within the two inter-bands and therefore no further relaxation is needed.
Table 6.1.6.1.2-2: Third order and fifth order intermodulation products (DL)
Band
DL low band edge
DL high band edge
DL 3rd order products
DL 5th order products
1
2110 MHz
2170 MHz
N/A
3326 – 3481 MHz
N/A
4542 – 4792 MHz
26
859 MHz
894 MHz
6.1.6.1.3 ∆TIB and ∆RIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 1 and Band 26.
Table 6.1.6.1.3-1: IB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_1A-26A
1
0.3
26
0.3
Table 6.1.6.1.3-2: RIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_1A-26A
1
0
26
0
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6.1.7 LTE Advanced Carrier Aggregation of Band 2 and Band 12 (1 UL)
|
Table 6.1.7-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_2-12
2
1850 MHz
–
1910 MHz
5, 10, 15, 20
1930 MHz
–
1990 MHz
5, 10, 15, 20
FDD
12
699 MHz
–
716 MHz
3, 5, 10
729 MHz
–
746 MHz
3, 5, 10
6.1.7.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.7.1.1 Channel bandwidths per operating band for CA
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Table 6.1.7.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_2A-12A
2
Yes
Yes
Yes
Yes
12
Yes
Yes
Yes
NOTE: For the UE that signals support of any bandwidth combination set for carrier aggregation, the UE shall support all single carrier bandwidths for the constituent bands as defined in table 5.6.1-1 of TS 36.101 [4] when operating in single carrier mode.
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36.851
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6.1.7.1.2 Co-existence studies for CA_2-12
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 2 and Band 12 DL carriers can be calculated as shown in table 6.1.7.1.2-1 below:
Table 6.1.7.1.2-1: Band 2 and Band 12 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
729
746
1930
1990
2nd order harmonics frequency range (MHz)
1458
1492
3860
3980
3rd order harmonics frequency range (MHz)
2187
2238
5790
5970
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1184
1261
2659
2736
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
438
532
3114
3251
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3388
3482
4589
4726
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
669
806
1913
2007
It can be seen from table 6.1.7.1.2-1 that the 2nd harmonics of Band 12 carriers may fall into the BS receive band of Band 21, while the 2nd IMD products caused by BS supporting carrier aggregation of Band 2 and Band 12 may fall into the BS receive band of Band 41, and the 3rd IMD products may fall into the BS receive band of Bands 1, 12, 13, 14, 17, 22, 23, 25, 28, 31, 33, 36, 37, 39, 42 and 44. Note that the calculation in table 6.1.7.1.2-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 2 and the whole 17 MHz DL frequency of Band 12. If the BS is only transmitting an up to 10 MHz DL in Band 2 and Band 12 as stated in the WIDS, then the 3rd IMD products will not fall into the BS receive band of Band 12, 13, 14, 17, 23, 25, 33 or 39 as shown in the last row in table 6.1.7.1.2-1.
It should be noted that Bands 1, 21, 28, 31, 39 and 44 are not intended for use in the same geographical area as Bands 2 and 12. Moreover, co-location of Band (2 + 12) transmitter and Band 33, 36 or 37 transceiver implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the harmonics and IMD falling into Bands 22, 41 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 22, 41 or 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 2 and 12 BS transmitters do not share the same antenna with Band 22, 41 or 42 BS receiver.
Therefore, it is recommended that Bands 2 and 12 BS transmitters should not share the same antenna with Band 22, 41 or 42 BS receiver, unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 22, 41 or 42 BS receiver desensitization. Note that antenna sharing may be allowed as the state-of-the-art continues to evolve in the future.
6.1.7.1.3 ΔTIB,c and ΔRIB
The following relaxations are allowed for the inter-band carrier aggregation of Band 2 and Band 12
Table 6.1.7.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_2A-12A
2
0.3
12
0.3
Table 6.1.7.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_2A-12A
2
0
12
0
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6.1.8 LTE Advanced Carrier Aggregation of Band 2 and Band 13
|
CA_2-13 is designed to operate in the operating bands in table 6.1.8-1.
Table 6.1.8-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_2-13
2
1850 MHz
–
1910 MHz
5,10,15, 20
(note 1)
1930 MHz
–
1990 MHz
5, 10, 15, 20
FDD
13
777 MHz
–
787 MHz
10
(note 1)
746 MHz
–
756 MHz
10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.8.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.8.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.8.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_2A-13A
2
Yes
Yes
Yes
Yes
0
13
Yes
2
Yes
Yes
1
13
Yes
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36.851
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6.1.8.1.2 Co-existence studies for CA_2-13
|
As shown in table 6.1.8.1.2-1, the harmonic frequencies of Band 2 and Band 13 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.8.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
2
1850
1910
1930
1990
3700
3820
5550
5730
3860
3980
5790
5970
13
777
787
746
756
1554
1574
2331
2361
1492
1512
2238
2268
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36.851
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6.1.8.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 2 and Band 13 DL carriers can be calculated as shown in table 6.1.8.1.2.1-1 below:
Table 6.1.8.1.2.1-1: Band 2 and Band 13 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
746
756
1930
1990
2nd order harmonics frequency range (MHz)
1492
1512
3860
3980
3rd order harmonics frequency range (MHz)
2238
2268
5790
5970
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1174
1244
2676
2746
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
418
498
3104
3234
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3422
3502
4606
4736
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
686
816
1920
2000
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
726
776
1920
2000
It can be seen from table 6.1.8.1.2.1-1 that the 2nd and 3rd harmonics of Band 2 and Band 13 carriers will not fall into the BS receive band of any frequency band currently defined in 3GPP, but the 2nd IMD products caused by BS supporting carrier aggregation of Band 2 and Band 13 may fall into the BS receive band of Band 41, and the 3rd IMD products may fall into the BS receive band of Bands 1, 12, 13, 14, 17, 18, 22, 26, 27, 28, 31, 36, 37, 42 and 44. Note that the calculation in table 6.1.8.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 2 and the whole 10 MHz DL frequency of Band 13. If the BS is only transmitting an up to 20 MHz DL in Band 2 and an up to 10 MHz DL in Band 13 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of the Bands 1, 22, 28, 31, 36, 37, 42 and 44 as shown in the last row in table 6.1.8.1.2.1-1.
It should be noted that that Bands 1, 18, 28, 31 and 44 are not intended for use in the same geographical area as Bands 2 and 13. Moreover, co-location of Band (2 +13) transmitter and Band 36 or 37 transceiver implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the harmonics and IMD falling into Bands 12, 14, 17, 22, 26, 27, 41 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 22, 41 or 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 2 and 13 BS transmitters do not share the same antenna with Band 12, 14, 17, 22, 26, 27, 41 or 42 BS receiver.
Therefore, it is recommended that Bands 2 and 13 BS transmitters should not share the same antenna with 12, 14, 17, 22, 26, 27, 41 or 42 BS receiver to prevent Band 12, 14, 17, 22, 26, 27, 41 or 42 BS receiver desensitization, unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 12, 14, 17, 22, 26, 27, 41 or 42 BS receiver desensitization.
6.1.8.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_2A-13A the ΔTIB,c is defined for applicable bands in table 6.1.8.1.3-1.
Table 6.1.8.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_2A-13A
2
0.3
13
0.3
For the UE which supports CA_2A-13A the ΔRIB is defined for applicable bands in table 6.1.8.1.3-2.
Table 6.1.8.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_2A-13A
2
0
13
0
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36.851
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6.1.9 LTE Advanced Carrier Aggregation of Band 12 and Band 25 (1 UL)
|
Table 6.1.9-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_12-25
12
699 MHz
–
716 MHz
5, 10
729 MHz
–
746 MHz
5, 10
FDD
25
1850 MHz
–
1915 MHz
5, 10
1930 MHz
–
1995 MHz
5, 10
6.1.9.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.9.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.9.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_12A-25A
12
Yes
Yes
25
Yes
Yes
NOTE: For the UE that signals support of any bandwidth combination set for carrier aggregation, the UE shall support all single carrier bandwidths for the constituent bands as defined in table 5.6.1-1 of TS 36.101 [4] when operating in single carrier mode.
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.9.1.2 Co-existence studies for CA _12_25
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 12 and Band 25 DL carriers can be calculated as shown in Table 6.1.9.1.2-1 below:
Table 6.1.9.1.2-1: Band 12 and Band 25 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
729
746
1930
1995
2nd order harmonics frequency range (MHz)
1458
1492
3860
3990
3rd order harmonics frequency range (MHz)
2187
2238
5790
5985
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1184
1266
2659
2741
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
438
537
3114
3261
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3388
3487
4589
4736
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
664
811
1913
2012
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
719
756
1920
2005
It can be seen from Table 6.1.9.1.2-1 that the 2nd harmonics of Band 12 carriers may fall into the BS receive band of Band 21, while the 2nd IMD products caused by BS supporting carrier aggregation of Band 12 and Band 25 may fall into the BS receive band of Band 41, and the 3rd IMD products may fall into the BS receive band of Bands 1, 12, 13, 14, 17, 22, 23, 25, 27, 28, 31, 33, 34, 36, 37, 39, 42 and 44. Note that the calculation in Table 6.1.9.1.2-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 25 and the whole 17 MHz DL frequency of Band 12. If the BS is only transmitting an up to 10 MHz DL in Band 25 and Band 12 as stated in the WIDS, then the 3rd IMD products will not fall into the BS receive band of Band 12, 13, 14, 17, 23, 25, 27, 33, 34 or 39 as shown in the last row in Table 6.1.9.1.2-1.
It should be noted that Bands 1, 21, 28, 31, and 44 are not intended for use in the same geographical area as Bands 25 and 12. Moreover, a co-location of Band (12 + 25) transmitter and Band 36 or 37 transceivers implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the harmonics and IMD falling into Bands 22, 41 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 22, 41 or 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 2 and 12 BS transmitters do not share the same antenna with Band 22, 41 or 42 BS receiver.
Therefore, it is recommended that Bands 12 and 25 BS transmitters should not share the same antenna with Band 22, 41 or 42 BS receivers; unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 22, 41 or 42 BS receiver de-sensitization. Note that antenna sharing may be allowed as the state-of-the-art continues to evolve in the future.
6. 1.9.1.3 ΔTIB,c and ΔRIB
The following relaxations are allowed for the inter-band carrier aggregation of Band 2 and Band 12
Table 6.1.9.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_12A-25A
12
0.3
25
0.3
Table 6.1.9.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_12A-25A
12
0
25
0
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389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.10 LTE Advanced Carrier Aggregation of Band 2 and Band 5
|
CA_2-5 is designed to operate in the operating bands in table 6.1.10-1.
Table 6.1.10-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_2-5
2
1850 MHz
–
1910 MHz
5, 10, 15, 20
(note 1)
1930 MHz
–
1990 MHz
5, 10, 15, 20
FDD
5
824 MHz
–
849 MHz
5, 10
(note 1)
869 MHz
–
894 MHz
5, 10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.10.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.10.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.10.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_2A-5A
Yes
Yes
Yes
Yes
0
Yes
Yes
Yes
Yes
1
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.10.1.2 Co-existence studies for CA_2-5
|
As shown in table 6.1.10.1.2-1, the harmonic frequencies of Band 2 and Band 5 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.10.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
2
1850
1910
1930
1990
3700
3820
5550
5730
3860
3980
5790
5970
5
824
849
869
894
1648
1698
2472
2547
1738
1788
2607
2682
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.10.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 2 and Band 5 DL carriers can be calculated as shown in Table 6.1.10.1.2.1-1 below:
Table 6.1.10.1.2.1-1: Band 2 and Band 5 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
869
894
1930
1990
2nd order harmonics frequency range (MHz)
1738
1788
3860
3980
3rd order harmonics frequency range (MHz)
2607
2682
5790
5970
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1036
1121
2799
2884
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
142
252
2966
3111
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3668
3778
4729
4874
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
809
954
1905
2015
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
849
914
1920
2000
the 2nd harmonics of BS transmitting in Band 5 may fall into the BS receive band of Bands 3, 4, 9 and 10, and the 3rd harmonics may fall into the BS receive band of Bands 38 and 41, while the 3rd IMD products caused by BS supporting carrier aggregation of Band 2 and Band 5 may fall into the BS receive band of Bands 1, 2, 5, 6, 8, 18, 19, 20, 23, 25, 26, 27, 33, 34, 35, 36, 37, 39 and 43. Note that the calculation in Table 6.1.10.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 2 and the whole 25 MHz DL frequency of Band 5. If the BS is only transmitting an up to 20 MHz DL in Band 2 and an up to 10 MHz DL in Band 5 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of the Bands 1, 8, 20, 36, 37 and 43 as shown in the last row in Table 6.1.10.1.2.1-1.
It should be noted that that Bands 1, 3, 8, 9, 20 and 38 are not intended for use in the same geographical area as Bands 2 and 5. Moreover, co-location of Band (2 + 5) transmitter and Band 36 or 37 transceiver implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the harmonics and IMD falling into Bands 4, 10, 41 and 43.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 4, 10, 41 or 43 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 2 and 5 BS transmitters do not share the same antenna with Band 4, 10, 41 or 43 BS receiver.
Therefore, it is recommended that Bands 2 and 5 BS transmitters should not share the same antenna with Band 4, 10, 41 or 43 BS receiver to prevent BS receiver desensitization, unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 4, 10, 41 or 43 BS receiver desensitization.
6.1.10.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_2A-5A the ΔTIB,c is defined for applicable bands in table 6.1.10.1.3-1.
Table 6.1.10.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_2A-5A
2
0.3
5
0.3
For the UE which supports CA_2A-5A the ΔRIB is defined for applicable bands in table 6.1.10.1.3-2.
Table 6.1.10.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_2A-5A
2
0
5
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.11 LTE Advanced Carrier Aggregation of Band 1 and Band 18
|
CA_1A-18A is designed to operate in the operating bands defined in Table 6.1.11-1.
Table 6.1.11-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_1-18
1
1920 MHz
–
1980 MHz
5, 10, 15, 20
2110 MHz
–
2170 MHz
5, 10, 15, 20
FDD
18
815 MHz
–
830 MHz
5, 10
860 MHz
–
875 MHz
5, 10
6.1.11.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.11.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.11.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_1A-18A
1
Yes
Yes
Yes
Yes
35
0
18
Yes
Yes
Yes
1
Yes
Yes
20
1
18
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.11.1.2 Co-existence studies for CA_1-18
|
Studies have been already made in Rel-11. See [3].
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.11.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 1 and Band 18 DL carriers can be calculated as shown in Table 6.1.11.1.2.1-1 below:
Table 6.1.11.1.2.1-1: Band 1 and Band 18 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
860
875
2110
2170
2nd order harmonics frequency range (MHz)
1720
1750
4220
4340
3rd order harmonics frequency range (MHz)
2580
2625
6330
6510
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2-low + f1-low)
(f2-high + f1-high)
IMD frequency limits (MHz)
1235
1310
2970
3045
3rd order IMD products
(f2-low – 2*f1-high)
(f2-high – 2*f1-low)
(2*f2-low – f1-high)
(2* f2-high – f1-low)
IMD frequency limits (MHz)
360
450
3345
3480
3rd order IMD products
(2*f1-low + f2-low)
(2*f1-high + f2-high)
(2*f2-low + f1-low)
(2*f2-high + f1-high)
IMD frequency limits (MHz)
3830
3920
5080
5215
3rd order IMD products
(f1-low – f2-high + f2-low)
(f1-high + f2-high – f2-low)
(f2-low – f1-high + f1-low)
(f2-high + f1-high – f1-low)
IMD frequency limits (MHz)
800
935
2095
2185
3rd Order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
840
895
2095
2185
It can be seen from Table 6.1.11.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 18 may fall into the BS receive band of Bands 3, 4, 9 and 10, and the 3rd harmonics of BS transmitting in Band 18 may fall into the BS receive band of Bands 38 and 41, while the 3rd IMD products caused by BS supporting CA of Band 1 and Band 18 may fall into the BS receive band of Bands 5, 6, 8, 18, 19, 20, 22, 26, 27, 42 and 44. Note that the calculation in Table 6.1.11.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 1 and the whole 15 MHz DL frequency of Band 18. If the BS is only transmitting an up to 20 MHz DL in Band 1 and an up to 15 MHz DL in Band 18 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of the Bands 5, 8, 19, 20, 22, 26 and 42 as shown in the last row in Table 6.1.11.1.2.1-1, and the 3rd IMD products will not fall into the BS receive frequency range within Band 8 (900 – 915 MHz) that is allocated in Japan. Also the 3rd IMD products may only fall into the BS receive band of certain frequency range within Band 19 under the transmit configurations shown in Table 6.1.11.1.2.1-2 below.
Table 6.1.11.1.2.1-2: Band (1 + 18) BS transmit configurations with 3rd IMD within Band 19 BS receive band
Band 1 DL channel bandwidth (MHz)
Band 18 DL channel bandwidth (MHz)
Lower edge of Band 18 DL frequency block (MHz)
Lower edge of IMD frequency limits (MHz)
20
5, 10 or 15
860 – 874.9
840 – 844.9
It should be noted that Bands 4, 5, 10, 20, 26 and 38 are not intended for use in the same geographical area as Bands 1 and 18, and the 3rd IMD products caused by BS supporting CA of Band 1 and Band 18 will not fall into the BS receive frequency range within Band 8 that is allocated in Japan. Therefore, the focus here will be on the harmonics and IMD falling into Bands 3, 9, 19, 22, 41 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the harmonics and IMD interference generated within the Band 3, 9, 22, 41 or 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 1 and 18 BS transmitters do not share the same antenna with Band 3, 9, 22, 41 or 42 BS receiver.
On the other hand, it is recommended that Bands 1 and 18 BS transmitters should not share the same antenna with Band 3, 9, 22, 41 or 42 BS receiver, or Band 19 BS receiver for the affected frequency ranges if the aforementioned BS transmit configurations are used, in order to prevent BS receiver desensitization, unless the antenna path meets very stringent harmonics and 3rd order PIM specification so that the harmonics and PIM will not cause Band 3, 9, 19, 22, 41 or 42 BS receiver desensitization.
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.12 LTE Advanced Carrier Aggregation of Band 7 and Band 28
|
CA_7-28 is designed to operate in the operating bands in table 6.1.12-1.
Table 6.1.12-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_7-28
7
2500 MHz
–
2570 MHz
5,10,15, 20
(Note 1)
2620 MHz
–
2690 MHz
5, 10, 15, 20
FDD
28
703 MHz
–
748 MHz
5, 10, 15
(Note 1)
758 MHz
–
803 MHz
5, 10, 15
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.12.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.12.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.12.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_7A-28A
7
Yes
Yes
Yes
Yes
28
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.12.1.2 Co-existence studies for CA_7-28
|
As shown in table 6.1.12.1.2-1, the harmonic frequencies of Band 7 and Band 28 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.12.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
7
2500
2570
2620
2690
5000
5140
7500
7710
28
703
748
758
803
1406
1496
2109
2244
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of band 7 and band 28 DL carriers can be calculated as shown in table 6.1.12.1.2-2 below:
Table 6.1.12.1.2-2: Band 7 and Band 28 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
758
803
2620
2690
2nd order harmonics frequency range (MHz)
1516
1606
5240
5380
3rd order harmonics frequency range (MHz)
2274
2409
7860
8070
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2-low + f1-low)
(f2-high + f1-high)
IMD frequency limits (MHz)
1817
1932
3378
3493
3rd order IMD products
(f2-low – 2*f1-high)
(f2-high – 2*f1-low)
(2*f2-low – f1-high)
(2* f2-high – f1-low)
IMD frequency limits (MHz)
1014
1174
4437
4622
3rd order IMD products
(2*f1-low + f2-low)
(2*f1-high + f2-high)
(2*f2-low + f1-low)
(2*f2-high + f1-high)
IMD frequency limits (MHz)
4136
4296
5998
6183
3rd order IMD products
(f1-low – f2-high + f2-low)
(f1-high + f2-high – f2-low)
(f2-low – f1-high + f1-low)
(f2-high + f1-high – f1-low)
IMD frequency limits (MHz)
688
873
2575
2735
It can be seen that the 3rd IMD products may fall into BS receive band of band 28. However, as described in subclause 5.1 of TR 36.850, due to the low-high band combinations use separate antennas, this issue can be regarded as covered in co-located BS scenarios and there is no need to address in inter-band carrier aggregation context.
6.1.12.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_7A-28A the ΔTIB,c is defined for applicable bands in table 6.1.12.1.3-1.
Table 6.1.12.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_7A-28A
7
0.3
28
0.3
For the UE which supports CA_7A-28A the ΔRIB is defined for applicable bands in table 6.1.12.1.3-2.
Table 6.1.12.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_7A-28A
7
0
28
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.13 LTE Advanced Carrier Aggregation of Band 5 and Band 25
|
CA_5-25 is designed to operate in the operating bands in table 6.1.13-1.
Table 6.1.13-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_5-25
5
824 MHz
–
849 MHz
5,10
(Note 1)
869 MHz
–
894 MHz
5, 10
FDD
25
1850 MHz
–
1915 MHz
5 ,10, 15, 20
(Note 1)
1930 MHz
–
1995 MHz
5, 10, 15, 20
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.13.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.13.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.13.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_5A-25A
5
Yes
Yes
0
25
Yes
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.13.1.2 Co-existence studies for CA_5-25
|
As shown in table 6.1.13.1.2-1, the harmonic frequencies of Band 5 and Band 25 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.13.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
5
824
849
869
894
1648
1698
2472
2547
1738
1788
2607
2682
25
1850
1915
1930
1995
3700
3830
5550
5745
3860
3990
5790
5985
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.13.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 5 and Band 25 DL carriers can be calculated as shown in Table 6.1.13.1.2.1-1 below:
Table 6.1.13.1.2.1-1: Band 5 and Band 25 DL harmonics and IMD products
BS DL carriers
f1-low
f1-high
f2-low
f2-high
DL frequency (MHz)
869
894
1930
1995
2nd harmonics frequency limits (MHz)
1738
1788
3860
3990
3rd harmonics frequency limits (MHz)
2607
2682
5790
5985
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2-low + f1-low)
(f2-high + f1-high)
IMD frequency limits (MHz)
1036
1126
2799
2889
3rd order IMD products
(f2-low – 2*f1-high)
(f2-high – 2*f1-low)
(2*f2-low – f1-high)
(2*f2-high – f1-low)
IMD frequency limits (MHz)
142
257
2966
3121
3rd order IMD products
(2*f1-low + f2-low)
(2*f1-high + f2-high)
(2*f2-low + f1-low)
(2*f2-high + f1-high)
IMD frequency limits (MHz)
3668
3783
4729
4884
3rd order IMD products
(f1-low – f2-high + f2-low)
(f1-high + f2-high – f2-low)
(f2-low – f1-high + f1-low)
(f2-high + f1-high – f1-low)
IMD frequency limits (MHz)
804
959
1905
2020
3rd order IMD products (with maximum channel bandwidth)
(f1-low – f2-BWmax)
(f1-high + f2- BWmax)
(f2-low – f1- BWmax)
(f2-high + f1- BWmax)
IMD frequency limits (MHz)
849
914
1920
2005
It can be seen from Table 6.1.13.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 5 may fall into the BS receive band of Bands 3, 4, 9 and 10, and the 3rd harmonics may fall into the BS receive band of Bands 38 and 41, while the 3rd IMD products caused by BS supporting carrier aggregation of Band 5 and Band 25 may fall into the BS receive band of Bands 1, 2, 5, 6, 8, 18, 19, 20, 23, 25, 26, 27, 33, 34, 35, 36, 37. 39 and 43. Note that the calculation in Table 6.1.13.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 25 MHz DL frequency of Band 5 and the whole 65 MHz DL frequency of Band 25. If the BS is only transmitting an up to 10 MHz DL in Band 5 and an up to 20 MHz DL in Band 25 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of Bands 1, 8, 20, 23, 36, 37 and 43 as shown in the last row in Table 6.1.13.1.2.1-1.
It should be noted that Bands 1, 3, 8, 9, 20 and 38 are not intended for use in the same geographical area as Bands 5 and 25. Moreover, co-location of Band (5 + 25) transmitter and Band 36 or 37 transceiver implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the harmonics and IMD falling into Bands 4, 10, 23, 41 and 43.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 4, 10, 41 or 43 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 5 and 25 BS transmitters do not share the same antenna with Band 4, 10, 41 or 43 BS receiver. But there is not a large frequency gap between Band 25 DL and Band 23 UL, and hence Band 23 BS receiver desensitization may still be an issue.
Therefore, it is recommended that Bands 5 and 25 BS transmitters should not share the same antenna with Band 4, 10, 23, 41 or 43 BS receiver to prevent BS receiver desensitization, unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 4, 10, 23, 41 or 43 BS receiver desensitization. Note that antenna sharing may be allowed as the state-of-the-art continues to evolve in the future.
6.1.13.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_5A-25A the ΔTIB,c is defined for applicable bands in table 6.1.13.1.3-1.
Table 6.1.13.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_5A-25A
5
0.3
25
0.3
For the UE which supports CA_5A-25A the ΔRIB is defined for applicable bands in table 6.1.13.1.3-2.
Table 6.1.13.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_5A-25A
5
0
25
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.14 LTE Advanced Carrier Aggregation of Band 5 and Band 7
|
CA_5-7 is designed to operate in the operating bands in table 6.1.14-1.
Table 6.1.14-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_5-7
5
824 MHz
–
849 MHz
1.4, 3, 5, 10
(Note 1)
869 MHz
–
894 MHz
1.4, 3, 5, 10
FDD
7
2500 MHz
–
2570 MHz
10,15, 20
(Note 1)
2620 MHz
–
2690 MHz
10, 15, 20
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.14.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.14.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.14.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_5A-7A
5
Yes
Yes
Yes
Yes
7
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.14.1.2 Co-existence studies for CA_5-7
|
As shown in table 6.1.14.1.2-1, the harmonic frequencies of Band 5 and Band 7 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.14.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
5
824
849
869
894
1648
1698
2472
2547
7
2500
2570
2620
2690
5000
5140
7500
7710
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 5 and Band 7 DL carriers can be calculated as shown in table 6.1.14.1.2-2 below:
Table 6.1.14.1.2-2: Band 5 and Band 7 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
869
894
2620
2690
2nd order harmonics frequency range (MHz)
1738
1788
5240
5380
3rd order harmonics frequency range (MHz)
2607
2682
7860
8070
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2-low + f1-low)
(f2-high + f1-high)
IMD frequency limits (MHz)
1726
1821
3489
3584
3rd order IMD products
(f2-low – 2*f1-high)
(f2-high – 2*f1-low)
(2*f2-low – f1-high)
(2* f2-high – f1-low)
IMD frequency limits (MHz)
832
952
4346
4511
3rd order IMD products
(2*f1-low + f2-low)
(2*f1-high + f2-high)
(2*f2-low + f1-low)
(2*f2-high + f1-high)
IMD frequency limits (MHz)
4358
4478
6109
6274
3rd order IMD products
(f1-low – f2-high + f2-low)
(f1-high + f2-high – f2-low)
(f2-low – f1-high + f1-low)
(f2-high + f1-high – f1-low)
IMD frequency limits (MHz)
799
964
2595
2715
It can be seen that the 3rd IMD products may fall into BS receive band of band 5. However, as described in subclause 5.1 of TR 36.850, due to the low-high band combinations use separate antennas, this issue can be regarded as covered in co-located BS scenarios and there is no need to address in inter-band carrier aggregation context.
6.1.14.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_5A-7A the ΔTIB,c is defined for applicable bands in table 6.1.14.1.3-1.
Table 6.1.14.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_5A-7A
5
0.3
7
0.3
For the UE which supports CA_5A-7A the ΔRIB is defined for applicable bands in table 6.1.14.1.3-2.
Table 6.1.14.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_5A-7A
5
0
7
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.15 LTE Advanced Carrier Aggregation of Band 5 and Band 30
|
CA_5-30 is designed to operate in the operating bands in table 6.1.15-1.
Table 6.1.15-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_5-30
5
824 MHz
–
849 MHz
5, 10
(note 1)
869 MHz
–
894 MHz
5, 10
FDD
30
2305 MHz
–
2315 MHz
5, 10
(note 1)
2350 MHz
–
2360 MHz
5, 10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.15.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.15.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.15.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_5A-30A
5
Yes
Yes
0
30
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.15.1.2 Co-existence studies for CA_5-30
|
As shown in table 6.1.15.1.2-1, the harmonic frequencies of Band 5 and Band 30 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.15.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
5
824
849
869
894
1648
1698
2472
2547
1738
1788
2607
2682
30
2305
2315
2350
2360
4610
4630
6915
6945
4700
4720
7050
7080
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.15.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 5 and Band 30 DL carriers can be calculated as shown in Table 6.1.15.1.2.1-1 below:
Table 6.1.15.1.2.1-1: Band 5 and Band 30 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
869
894
2350
2360
2nd order harmonics frequency range (MHz)
1738
1788
4700
4720
3rd order harmonics frequency range (MHz)
2607
2682
7050
7080
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1456
1491
3219
3254
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
562
622
3806
3851
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
4088
4148
5569
5614
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
859
904
2325
2385
3rd order IMD products
(Considering Max BW)
(f1_low – max BW f2)
(f1_high + max BW f2)
(f2_low – max BW f1)
(f2_high + max BW f1)
IMD frequency limits (MHz)
859
904
2340
2370
It can be seen from Table 6.1.15.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 5 may fall into the BS receive band of Bands 3, 4, 9 and 10, and the 3rd harmonics may fall into the BS receive band of Bands 38 and 41, while the 2nd IMD products caused by BS supporting carrier aggregation of Band 5 and Band 30 may fall into the BS receive band of Band 21, and the 3rd IMD products may fall into the BS receive band of Bands 8, 20 and 40. Note that the calculation in Table 6.1.15.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 25 MHz DL frequency of Band 5 and the whole 10 MHz DL frequency of Band 30. However, even if the BS is only transmitting an up to 10 MHz DL in Band 5 and an up to 10 MHz DL in Band 30 as stated in the WIDS, the 3rd IMD products may still fall into the BS receive band of Bands 8, 20 and 40 as shown in the last row in Table 6.1.15.1.2.1-1.
It should be noted that Bands 3, 8, 9, 20, 21, 38 and 40 are not intended for use in the same geographical area as Bands 5 and 30. Therefore, the focus here will be on the harmonics and IMD falling into Bands 4, 10 and 41.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 4, 10 or 41 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 5 and 30 BS transmitters do not share the same antenna with Band 4, 10 or 41 BS receiver.
Therefore, it is recommended that Bands 5 and 30 BS transmitters should not share the same antenna with Band 4, 10 or 41 BS receiver to prevent BS receiver desensitization, unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 4, 10 or 41 BS receiver desensitization.
6.1.15.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_5A-30A the ΔTIB,c is defined for applicable bands in table 6.1.15.1.3-1.
Table 6.1.15.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_5A-30A
5
0.3
30
0.3
For the UE which supports CA_5A-30A the ΔRIB is defined for applicable bands in table 6.1.15.1.3-2.
Table 6.1.15.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_5A-30A
5
0
30
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.16 LTE Advanced Carrier Aggregation of Band 29 and Band 30
|
CA_29-30 is designed to operate in the operating bands in table 6.1.16-1.
Table 6.1.16-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_29-30
29
(note 1)
N/A
–
N/A
N/A
717 MHz
–
728 MHz
5, 10
FDD
30
2305 MHz
–
2315 MHz
5, 10
2350 MHz
–
2360 MHz
5, 10
NOTE 1: Band 29 is a downlink only band
6.1.16.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.16.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.16.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_29A-30A
29
Yes
Yes
0
30
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.16.1.2 Co-existence studies for CA_29-30
|
As shown in table 6.1.16.1.2-1, the harmonic frequencies of Band 30 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.16.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
29
N/A
N/A
717
728
N/A
N/A
N/A
N/A
1434
1456
2151
2184
30
2305
2315
2350
2360
4610
4630
6915
6945
4700
4720
7050
7080
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.16.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 29 and Band 30 DL carriers can be calculated as shown in Table 6.1.16.1.2.1-1 below:
Table 6.1.16.1.2.1-1: Band 29 and Band 30 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
717
728
2350
2360
2nd order harmonics frequency range (MHz)
1434
1456
4700
4720
3rd order harmonics frequency range (MHz)
2151
2184
7050
7080
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1622
1643
3067
3088
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
894
926
3972
4003
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3784
3816
5417
5448
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
707
738
2339
2371
3rd order IMD products
(Considering Max BW)
(f1_low – max BW f2)
(f1_high + max BW f2)
(f2_low – max BW f1)
(f2_high + max BW f1)
IMD frequency limits (MHz)
707
738
2340
2370
It can be seen from Table 6.1.16.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 29 may fall into the BS receive band of Bands 11 and 21, while the 2nd IMD products caused by BS supporting carrier aggregation of Band 29 and Band 30 may fall into the BS receive band of Band 24, and the 3rd IMD products may fall into the BS receive band of Bands 8, 12, 17, 28, 40, 43 and 44. Note that the calculation in Table 6.1.16.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 11 MHz DL frequency of Band 29 and the whole 10 MHz DL frequency of Band 30. However, even if the BS is only transmitting an up to 10 MHz DL in Band 29 and an up to 10 MHz DL in Band 30 as stated in the WIDS, the 3rd IMD products may still fall into the BS receive band of Bands 8, 12, 17, 28, 40, 43 and 44 as shown in the last row in Table 6.1.16.1.2.1-1.
It should be noted that Bands 6, 11, 21, 28, 40 and 44 are not intended for use in the same geographical area as Bands 29 and 30. Therefore, the focus here will be on the harmonics and IMD falling into Bands 12, 17, 24 and 43.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 24 or 43 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 29 and 30 BS transmitters do not share the same antenna with Band 24 or 43 BS receiver. However, the 3rd IMD products may still fall into the BS receive band of Bands 12 and 17, which is only 1 MHz away from Band 29 transmit band, and desensitize the receiver.
Therefore, it is recommended that Bands 29 and 30 BS transmitters should not share the same antenna with Band 12, or 17 BS receiver to prevent BS receiver desensitization, or with Band 24 or 43 BS receiver unless the antenna path meets very stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 24 or 43 BS receiver desensitization.
6.1.16.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_29A-30A the ΔTIB,c is defined for applicable bands in table 6.1.16.1.3-1.
Table 6.1.16.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_29A-30A
29
0.3
30
0.3
For the UE which supports CA_29A-30A the ΔRIB is defined for applicable bands in table 6.1.16.1.3-2.
Table 6.1.16.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_29A-30A
29
0
30
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.17 LTE Advanced Carrier Aggregation of Band 4 and Band 27 (1 UL)
|
CA_4A-27A is designed to operate in the operating bands defined in table 6.1.17-1.
Table 6.1.17-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_4-27
4
1710 MHz
–
1755 MHz
5, 10, 15, 20
2110 MHz
–
2155 MHz
5, 10, 15, 20
FDD
27
807 MHz
–
824 MHz
3, 5, 10
852 MHz
–
869 MHz
3, 5, 10
6.1.17.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.17.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.17.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_4A-27A
4
Yes
Yes
Yes
Yes
30
27
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.17.1.2 Co-existence studies for CA_4-27
|
Band 4 and Band 27 are a High-Low band combination. The UL harmonic frequencies can be seen in table 6.1.17.1.2-1. It can be seen that the UL harmonics do not fall into the DL of either band. Therefore we can conclude that there is no issue with UL harmonic interference to the DL.
Table 6.1.17.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
4
1710
1755
2110
2155
3420
3510
5130
5265
27
807
824
852
869
1614
1648
2421
2472
Table 6.1.17.1.2-2 shows the second and third order DL harmonics and intermodulation products when two simultaneous DLs are active in Band 4 and Band 27.
Table 6.1.17.1.2-2: Band 4 and Band 27 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
852
869
2110
2155
2nd order harmonics frequency range (MHz)
1704
1738
4220
4310
3rd order harmonics frequency range (MHz)
2556
2607
6330
6465
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1241
1303
2962
3024
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
372
451
3351
3458
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3814
3893
5072
5179
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
807
914
2093
2172
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
832
889
2100
2165
It can also be seen from table 6.1.17.1.2-2 that the 2nd and 3rd harmonics of BS transmitting in Band 27 may fall into the BS receive band of Bands 3, 4, 7, 10, 38 and 41, and the 3rd IMD products into the BS receive band of Bands 5, 6, 8, 18, 19, 20, 22, 26, 27 and 42. Note that the calculation in table 6.1.17.1.2-2 (except the last row) assumes the BS is transmitting with the entire 45 MHz DL frequency of Band 4 and the entire 17 MHz DL frequency of Band 27. If the BS is only transmitting in 20 MHz DL in Band 4 as stated in the WIDs, the 3rd IMD products will not fall into the BS receive band of Band 18 or 27 as shown in the last row in table 6.1.17.1.2-2. Also, in countries where Band 27 and Band 8 can be deployed, only part of Band 8 that is above the Band 5 downlink is deployed because of the overlap between Band 5 and Band 8. When the actual carrier bandwidths are factored in, the 3Rd IMD does not overlap with the part of Band 8 BS receive band that is deployed in Korea, Brazil Australia or other countries where Band 27 and Band 8 will be deployed.
It should be noted that Band 4 is not meant to be deployed in the same geographic area as Bands 3, 6, 18, 19, 20. Therefore the focus here will be on the harmonics of Band 27 falling into Bands 4, 7, 10, 38 and 41, and IMD falling into Bands 5, 22, 26 and 42.
In order to avoid BS receiver desensitization due to the second and third harmonics of Band 27, it is recommended that Band 27 BS transmitter should not share the same antenna with a receiver for Bands 4, 7, 10, 38 or 41.
With the performance of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 5, 22, 26 and 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 4 and 27 BS transmitters do not share the same antenna with Bands 5, 22, 26 and 42 BS receiver, unless the antenna path meets very stringent third order PIM specification so that the PIM will not cause receiver desensitization.
6.1.17.1.3 ΔTIB and ΔRIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 4 and Band 27.
Table 6.1.17.1.3-1: IB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_4A-27A
4
0.3
27
0.3
Table 6.1.17.1.3-2: RIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_4A-27A
4
0
27
0
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.18 LTE Advanced Carrier Aggregation of Band 3 and Band 27
|
CA_3-27 is designed to operate in the operating bands in table 6.1.18-1.
Table 6.1.18-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_3-27
3
1710 MHz
–
1785 MHz
5, 10, 15, 20
(Note 1)
1805 MHz
–
1880 MHz
5, 10, 15, 20
FDD
27
807 MHz
–
824 MHz
5, 10
(Note 1)
852 MHz
–
869 MHz
5, 10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.18.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.18.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.18.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_3A-27A
3
Yes
Yes
Yes
Yes
27
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.18.1.2 Co-existence studies for CA_3-27
|
As shown in table 6.1.18.1.2-1, the harmonic frequencies of Band 3 and Band 27 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.18.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
3
1710
1785
1805
1880
3420
3570
5130
5355
27
807
824
852
869
1614
1648
2421
2472
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 3 and Band 27 DL carriers can be calculated as shown in table 6.1.18.1.2-2 below:
Table 6.1.18.1.2-2: Band 3 and Band 27 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
852
869
1805
1880
2nd order harmonics frequency range (MHz)
1704
1738
3610
3760
3rd order harmonics frequency range (MHz)
2556
2607
5415
5640
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2-low + f1-low)
(f2-high + f1-high)
IMD frequency limits (MHz)
936
1028
2657
2749
3rd order IMD products
(f2-low – 2*f1-high)
(f2-high – 2*f1-low)
(2*f2-low – f1-high)
(2* f2-high – f1-low)
IMD frequency limits (MHz)
67
176
2741
2908
3rd order IMD products
(2*f1-low + f2-low)
(2*f1-high + f2-high)
(2*f2-low + f1-low)
(2*f2-high + f1-high)
IMD frequency limits (MHz)
3509
3618
4462
4629
3rd order IMD products
(f1-low – f2-high + f2-low)
(f1-high + f2-high – f2-low)
(f2-low – f1-high + f1-low)
(f2-high + f1-high – f1-low)
IMD frequency limits (MHz)
777
944
1788
1897
3rd Order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
832
889
1795
1890
It can be seen in table 6.1.18.1.2-2 that the 2nd and 3rd harmonics of BS transmitting in Band 27 may fall into the BS receive band of Bands 3, 4, 7, 10, 38 and 41 and the second harmonics of Band 3 could fall into the receive band of Band 43.
It can be seen that the 3rd IMD products may fall into BS receive band of band 2, 5, 6, 8, 13, 14, 18, 19, 20, 25, 26, 27, 35, 39, 42, 43 and 44. Note that the calculation in table 6.1.18.1.2-2 (except the last row) assumes the BS is transmitting with the entire 75 MHz DL frequency of Band 3 and the entire 17 MHz DL frequency of Band 27. If the BS is only transmitting an up to 20 MHz DL in Band 3 and 10 MHz in Band 27 as stated in the WIDs, the 3rd IMD products will not fall into the BS receive band of the Band 13, 14 18, 27, or 44 as shown in the last row in table 6.1.18.1.2-2. Also, in countries where Band 27 and Band 8 can be deployed, only part of Band 8 that is above the Band 5 downlink is deployed because of the overlap between Band 5 and Band 8. When the actual carrier bandwidths are factored in, the 3rd IMD does not overlap with the part of Band 8 BS receive band that is deployed in Korea, Brazil Australia or other countries where Band 27 and Band 8 will be deployed.
It should be noted that Band 3 and Band 27 are not meant to be deployed together in the same geographic area as Bands 2, 4, 6, 9, 10, 13, 14, 18, 19, 20, 25, 39, 43. Therefore the focus here will be on the harmonics of Band 27 falling into Bands 3, 7, 38 and 41, and IMD products falling into Bands 5, 26, 35 and 42.
However, as described in subclause 5.1 of TR 36.850, due to the low and high bands use separate antennas, these issues can be regarded as covered in co-located BS scenarios and there is no need to address in inter-band carrier aggregation context.
6.1.18.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_3A-27A the ΔTIB,c is defined for applicable bands in table 6.1.18.1.3-1.
Table 6.1.18.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_3A-27A
3
0.3
27
0.3
For the UE which supports CA_3A-27A the ΔRIB is defined for applicable bands in table 6.1.18.1.3-2.
Table 6.1.18.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_3A-27A
3
0
27
0
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6.1.19 LTE Advanced Carrier Aggregation of Band 1 and Band 5
|
CA_1-5 is designed to operate in the operating bands in table 6.1.19-1.
Table 6.1.19-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_1-5
1
1920 MHz
–
1980 MHz
5, 10, 15, 20
(Note 1)
2110 MHz
–
2170 MHz
5, 10, 15, 20
FDD
5
824 MHz
–
849 MHz
5,10
(Note 1)
869 MHz
–
894 MHz
5, 10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.19.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.19.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.19.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_1A-5A
1
Yes
Yes
Yes
Yes
5
Yes
Yes
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.19.1.2 Co-existence studies for CA_1-5
|
Table 6.1.19.1.2-1 summarizes frequency ranges where harmonics occur due to Band 1 or Band 5 for both UL and DL. It can be seen that the harmonic frequencies of Band 1 and Band 5 in DL are away from the BS receive bands of interest in the UL. For the UE aspect, the UL harmonic frequencies of Band 1 and Band 5 does not locate within the UE receive bands of interest in the DL. Therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.19.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
1
1920
1980
2110
2170
3840
3960
5760
5940
4220
4340
6330
6510
5
824
849
869
894
1648
1698
2472
2547
1738
1788
2607
2682
The 2nd DL harmonics of Band 5 carriers may fall into the BS receive band of Bands 3, 4, 9 and 10. And also 3rd DL harmonics of Band 5 carriers may fall into the BS receiver band of Bands 38 and 41.
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 1 and Band 5 DL carriers can be calculated as shown in table 6.1.19.1.2-2 below:
Table 6.1.19.1.2-2: Band 1 and Band 5 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
869
894
2110
2170
2nd order harmonics frequency range (MHz)
1738
1788
4220
4340
3rd order harmonics frequency range (MHz)
2607
2682
6330
6510
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1216
1301
2979
3064
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
322
432
3326
3471
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3848
3958
5089
5234
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
809
954
2085
2195
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
849
914
2100
2180
It can be seen from table 6.1.19.1.2-2 that the 3rd IMD products caused by BS supporting carrier aggregation of Band 1 and Band 5 may fall into the BS receive bands of Band 5, 6, 8, 18, 19, 20, 22, 26, 27 and 42. However, when the impact of maximum bandwidth is considered, the 3rd order IMD products do not fall into the BS receive of Band 5, 6, 18, 19, 26 and 27.
It should be noted that Bands 4, 9, 10, 20, and 22 are not intended for use in the same geographical area as Band 1 and 5. Consequently, the focus here will be on the harmonics and IMD products falling into Bands 3, 8, 38, 41 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the harmonics and IMD interference generated within the Bands 3, 8, 38, 41 and 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization.
Therefore, it is recommended that Band 1 and 5 BS transmitters should not share the same antenna with Band 3, 8, 38, 41 or 42 BS receivers for the affected frequency ranges.
6.1.19.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_1A-5A with 2DLs and 1UL, the ΔTIB,c is defined for applicable bands in table 6.1.19.1.3-1.
Table 6.1.19.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_1A-5A
1
0.3
5
0.3
For the UE which supports CA_1A-5A with 2DLs and 1UL, the ΔRIB is defined for applicable bands in table 6.1.19.1.3-2.
Table 6.1.19.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_1A-5A
1
0
5
0
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6.1.20 LTE Advanced Carrier Aggregation of Band 12 and Band 30
|
CA_12-30 is designed to operate in the operating bands in table 6.1.20-1.
Table 6.1.20-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_12-30
12
699 MHz
–
716 MHz
5, 10
(note 1)
729 MHz
–
746 MHz
5, 10
FDD
30
2305 MHz
–
2315 MHz
5, 10
(note 1)
2350 MHz
–
2360 MHz
5, 10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.1.20.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.20.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.20.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_12A-30A
12
Yes
Yes
0
30
Yes
Yes
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36.851
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6.1.20.1.2 Co-existence studies for CA_12-30
|
As shown in table 6.1.20.1.2-1, the harmonic frequencies of Band 12 and Band 30 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.1.20.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
12
699
716
729
746
1398
1432
2097
2148
1458
1492
2187
2238
30
2305
2315
2350
2360
4610
4630
6915
6945
4700
4720
7050
7080
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36.851
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6.1.20.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 12 and Band 30 DL carriers can be calculated as shown in table 6.1.20.1.2.1-1 below:
Table 6.1.20.1.2.1-1: Band 12 and Band 30 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
729
746
2350
2360
2nd order harmonics frequency range (MHz)
1458
1492
4700
4720
3rd order harmonics frequency range (MHz)
2187
2238
7050
7080
2nd order IMD products
(f2-low – f1-high)
(f2-high – f1-low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1604
1631
3079
3106
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
858
902
3954
3991
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3808
3852
5429
5466
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
719
756
2333
2377
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
719
756
2340
2370
It can be seen from table 6.1.20.1.2.1-1 that the 2nd harmonics of BS transmitting in Bands 12 may fall into the BS receive band of Bands 21, while the 2nd IMD products of BS transmitting in Bands 12 and 30 may fall into the BS receive band of Band 24, and the 3rd IMD products supporting CA of Band 12 and Band 30 may fall into the BS receive band of Bands 8, 20, 28, 40 and 44. Note that the calculation in table 6.1.20.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 17 MHz DL frequency of Band 12 and the whole 10 MHz DL frequency of Band 30. However, even if the BS is only transmitting an up to 10 MHz DL in Band 12 and an up to 10 MHz DL in Band 30 as stated in the WIDS, the 3rd IMD products may still fall into the BS receive band of Bands 8, 20, 28, 40 and 44 as shown in the last row in table 6.1.20.1.2.1-1.
It should be noted that Bands 8, 20, 21, 28, 40 and 44 are not intended for use in the same geographical area as Bands 12 and 30. Therefore, the focus here will be on the IMD falling into Band 24.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 24 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 12 and 30 BS transmitters do not share the same antenna with Band 24 BS receiver.
Therefore, it is recommended that Bands 12 and 30 BS transmitters should not share the same antenna with Band 24 BS receiver to prevent BS receiver desensitization, unless the antenna path meets very stringent 2nd order PIM specification so that the PIM will not cause Band 24 BS receiver desensitization.
6.1.20.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_12A-30A the ΔTIB,c is defined for applicable bands in table 6.1.20.1.3-1.
Table 6.1.20.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_12A-30A
12
0.3
30
0.3
For the UE which supports CA_12A-30A the ΔRIB is defined for applicable bands in table 6.1.20.1.3-2.
Table 6.1.20.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_12A-30A
12
0
30
0
6.1.21 LTE Advanced Carrier Aggregation of Band 1 and Band 20
CA_1A-20A is designed to operate in the operating bands defined in table 6.1.21-1.
Table 6.1.21-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_1-20
1
1920 MHz
–
1980 MHz
5, 10, 15, 20
2110 MHz
–
2170 MHz
5, 10, 15, 20
FDD
20
832 MHz
–
862 MHz
5, 10, 15, 20
791 MHz
–
821 MHz
5, 10, 15, 20
6.1.21.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.21.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.21.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_1A-20A
1
Yes
Yes
Yes
25
0
20
Yes
Yes
1
Yes
Yes
Yes
Yes
40
1
20
Yes
Yes
Yes
Yes
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.21.1.2 Co-existence studies for CA_1-20
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 1 and Band 20 DL carriers can be calculated as shown in table 6.1.21.1.2-1 below:
Table 6.1.21.1.2-1: Co-existence studies for 1 UL/2 DL
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
791
821
2110
2170
2nd order harmonics frequency range (MHz)
1582 to 1642
4220 to 4340
3rd order harmonics frequency range (MHz)
2373 to 2463
6330 to 6510
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
1289 to 1379
2901 to 2991
Two-tone 3rd order IMD products
2*f1_low – f2_high
&
(2*f1_low + f2_low)
2*f1_high – f2_low
&
(2*f1_high + f2_high)
2*f2_low – f1_high
&
(2*f2_low + f1_low)
2* f2_high – f1_low
&
(2*f1_high + f2_high)
IMD frequency range (MHz)
468 to 588
3692 to 3812
3399 to 3549
5011 to 5161
Three-tone 3rd order IMD products
(f1_low –
max BW f2)
(f1_high +
max BW f2)
(f2_low –
max BW f1)
(f2_high +
max BW f1)
IMD frequency range (MHz)
771 to 841
2090 to 2190
As it can be seen from table 6.1.21.1.2-1, the 2nd and 3rd order harmonics from BS transmitting in Band 20 may fall in the BS receive band of Bands 24, 40. 3rd order IMD products may fall into the BS receive band of Bands 5, 6, 13, 14, 18, 19, 20, 22, 26, 27, 28, 42, 43, 44.
Note that the calculation in table 6.1.21.1.2-1 (except the last row) assumes the BS is transmitting with the whole 30 MHz DL frequency of Band 20 and the whole 60 MHz DL frequency of Band 1. If the BS is only transmitting up to 10 MHz DL in Band 20 and up to 15 MHz DL in Band 1 as stated in the WID, then the 3rd IMD products may only fall into the BS receive band of certain frequency range within Bands 5, 6, 13, 14, 18, 19, 20, 26, 27, of which only Band 20 is intended to be used in the same geographical area.
The transmit configurations of the BS transmitting in Bands 1+20 with 3rd IMD products into Band 20 receive band are:
Table 6.1.21.1.2-2: Band (1 + 20) BS transmit configurations with 3rd IMD within Bands 20 BS receive band (832-862MHz)
Band 20 DL channel bandwidth (MHz)
Upper edge of Band 20 DL frequency block (MHz)
Band 1 DL channel bandwidth (MHz)
IMD frequency limits (MHz)
5
816 - 821
5
811 - 826
5
816 - 821
10
806 - 831
5
816 - 821
15
801 - 836
5
816 - 821
20
796 - 841
10
811 - 821
5
806 - 826
10
811 - 821
10
801 – 831
10
811 - 821
15
796 - 836
10
811 - 821
20
791 - 841
15
806 - 821
5
801 - 826
15
806 - 821
10
796 - 831
15
806 – 821
15
791 - 836
15
806 – 821
20
786 - 841
20
801 - 821
5
796 – 826
20
801 - 821
10
791 - 831
20
801 - 821
15
786 - 836
20
801 - 821
20
781 - 841
As it can be seen from table 6.1.21.1.2-2 only when Band 1 uses 15MHz or 20MHz there may be IMD products falling into Band 20 receive band. In such cases, it could be necessary to avoid sharing the same RF path for both transmitter and receiver side, or avoid such configurations in the BS.
In table 6.1.21.1.2-3 the harmonic interference study is provided from UL perspective for Band 1 and 20. It can be seen that the harmonic frequencies do not fall into the frequency ranges of both bands as observed in table 6.1.21.1.2-3. Therefore it can be concluded that there is no issue on harmonic interference.
Table 6.1.21.1.2-3: Impact of UL Harmonic Interference
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
1
1920
1980
3840
3960
5760
5940
20
832
862
1664
1724
2496
2586
6.1.21.1.3 ∆TIB and ∆RIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 1 and Band 20.
Table 6.1.21.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_1A-20A
1
0.3
20
0.3
Table 6.1.21.1.3-2: ΔRIB,c
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_1A-20A
1
0
20
0
6.1.22 LTE Advanced Carrier Aggregation of Band 3 and Band 20
CA_3A-20A is designed to operate in the operating bands defined in table 6.1.22-1.
Table 6.1.22-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) operating band
Downlink (DL) operating band
Duplex Mode
BS receive / UE transmit
BS transmit / UE receive
FUL_low – FUL_high
FDL_low – FDL_high
CA_3-20
3
1710 MHz
–
1785 MHz
1805 MHz
–
1880 MHz
FDD
20
832 MHz
–
862 MHz
791 MHz
–
821 MHz
6.1.22.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.22.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.22.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_3A-20A
3
Yes
Yes
Yes
Yes
40
1
20
Yes
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.22.1.2 Co-existence studies for CA_3-20
|
Table 6.1.22.1.2-1 shows harmonics frequency limits and Table 6.1.22.1.2-2 intermodulation products frequency limits for CA of Band 3 and Band 20, respectively. Harmonics and intermodulation product problems are summarized below the relevant Table.
Table 6.1.22.1.2-1: DL harmonics frequency limits for CA of Band 3 and Band 20
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
791
821
1805
1880
2nd order harmonics frequency range (MHz)
1582 to 1642
3610 to 3760
3rd order harmonics frequency range (MHz)
2373 to 2463
5415 to 5640
As shown in Table 6.1.22.1.2-1, second and third harmonics may fall to UL frequencies of Band 24, 40 or 43.
Table 6.1.22.1.2-2: DL intermodulation products frequency limits for CA of Band 3 and Band 20
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
791
821
1805
1880
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
984 to 1089
2596 to 2701
Two-tone 3rd order IMD products
2*f1_low – f2_high
2*f1_high – f2_low
2*f2_low – f1_high
2* f2_high – f1_low
IMD frequency range (MHz)
163 to 298
2789 to 2969
Two-tone 3rd order IMD products
2*f1_low + f2_low
2*f1_high + f2_high
2*f2_low + f1_low
2*f2_high + f1_high
IMD frequency range (MHz)
3387 to 3522
4401 to 4581
Three-tone 3rd order IMD products
(f1_low –
max BW f2)
(f1_high +
max BW f2)
(f2_low –
max BW f1)
(f2_high +
max BW f1)
IMD frequency range (MHz)
771 to 841
1785 to 1900
As shown in Table 6.1.22.1.2-2, second order intermodulation products may fall to UL frequencies of Band 38 or 41.
Third intermodulation products may fall to UL frequencies of Band 2, 5-6, 13-14, 18-20, 22, 25-27, 35, 39, 42 or 44. It should be noted intermodulation products may fall to own receive block of Band 20 (highlighted in Table 6.1.22.1.2-2). As this combination is Low-High frequency combination, it is assumed there will be no issue as separate antennas will be used for Band 3 and Band 20.
It is suggested BS transmitters supporting CA of Band 3 and Band 20 should not share the same antenna with Band 2, 5-6, 13-14, 18-20, 22, 24-27, 35 or 38-44 BS receiver, unless the antenna path meets very stringent third order PIM specification so that the PIM will not cause Band 2, 5-6, 13-14, 18-20, 22, 24-27, 35 or 38-44 BS receiver desensitization.
6.1.22.1.3 ∆TIB and ∆RIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 3 and Band 20.
Table 6.1.22.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_3A-20A
3
0.3
20
0.3
Table 6.1.22.1.3-2: ΔRIB,c
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_3A-20A
3
0
20
0
6.1.23 LTE Advanced Carrier Aggregation of Band 7 and Band 20
CA_7A-20A is designed to operate in the operating bands defined in table 6.1.23-1.
Table 6.1.23-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) operating band
Downlink (DL) operating band
Duplex Mode
BS receive / UE transmit
BS transmit / UE receive
FUL_low – FUL_high
FDL_low – FDL_high
CA_7-20
7
2500 MHz
–
2570 MHz
2620 MHz
–
2690 MHz
FDD
20
832 MHz
–
862 MHz
791 MHz
–
821 MHz
6.1.23.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.23.1.1 Channel bandwidths per operating band for CA
|
Table 6.1.23.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_7A-20A
7
Yes
Yes
Yes
40
1
20
Yes
Yes
Yes
Yes
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389f9b67c003a620147a83200e3331ae
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36.851
|
6.1.23.1.2 Co-existence studies for CA_7-20
|
Table 6.1.23.1.2-1 shows harmonics frequency limits and Table 6.1.23.1.2-2 intermodulation products frequency limits for CA of Band 7 and Band 20, respectively. Harmonics and intermodulation product problems are summarized below the relevant Table.
Table 6.1.23.1.2-1: DL harmonics frequency limits for CA of Band 7 and Band 20
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
791
821
2620
2690
2nd order harmonics frequency range (MHz)
1582 to 1642
5240 to 5380
3rd order harmonics frequency range (MHz)
2373 to 2463
7860 to 8070
As shown in Table 6.1.23.1.2-1, second and third harmonics may fall to UL frequencies of Band 24 or 40.
Table 6.1.23.1.2-2: DL intermodulation products frequency limits for CA of Band 7 and Band 20
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
791
821
2620
2690
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
1799 to 1899
3411 to 3511
Two-tone 3rd order IMD products
2*f1_low – f2_high
2*f1_high – f2_low
2*f2_low – f1_high
2* f2_high – f1_low
IMD frequency range (MHz)
978 to 1108
4419 to 4589
Two-tone 3rd order IMD products
2*f1_low + f2_low
2*f1_high + f2_high
2*f2_low + f1_low
2*f2_high + f1_high
IMD frequency range (MHz)
4202 to 4332
6031 to 6201
Three-tone 3rd order IMD products
(f1_low –
max BW f2)
(f1_high +
max BW f2)
(f2_low –
max BW f1)
(f2_high +
max BW f1)
IMD frequency range (MHz)
771 to 841
2600 to 2710
As shown in Table 6.1.23.1.2-2, second order intermodulation products may fall to UL frequencies of Band 2, 22, 25, 35, 39 or 42.
Third intermodulation products may fall to UL frequencies of Band 5-6, 13-14, 18-20, 26-27, 38, 41 or 44. It should be noted intermodulation products may fall to own receive block of Band 20 (highlighted in Table 6.1.23.1.2-2). As this combination is Low-High frequency combination, it is assumed there will be no issue as separate antennas will be used for Band 7 and Band 20.
It is suggested BS transmitters supporting CA of Band 7 and Band 20 should not share the same antenna with Band 2, 5-6, 13-14, 18-20, 22, 24-27, 35, 38-42 or 44 BS receiver, unless the antenna path meets very stringent third order PIM specification so that the PIM will not cause Band 2, 5-6, 13-14, 18-20, 22, 24-27, 35, 38-42 or 44 BS receiver desensitization.
6.1.23.1.3 ∆TIB and ∆RIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 7 and Band 20.
Table 6.1.23.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_7A-20A
7
0.3
20
0.3
Table 6.1.23.1.3-2: ΔRIB,c
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_7A-20A
7
0
20
0
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.24 LTE Advanced Carrier Aggregation of Band 4 and Band 12
|
6.1.24.1 List of specific combination issues
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389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.24.1.1 Channel bandwidths per operating band for CA
|
LTE inter-band carrier aggregation configuration CA_4A-12A shall be operated in E-UTRA CA band CA_4-12 as specified in table 6.1.24.1.1-1.
Table 6.1.24.1.1-1: CA_4-12 operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) operating band
Downlink (DL) operating band
BS receive / UE transmit
BS transmit / UE receive
FUL_low – FUL_high
FDL_low – FDL_high
CA_4-12
4
1710 MHz
–
1755 MHz
2110 MHz
–
2155 MHz
12
699 MHz
–
716 MHz
729 MHz
–
746 MHz
LTE inter-band carrier aggregation configuration CA_4A-12A shall be operated with E-UTRA channel bandwidths as specified in table 6.1.24.1.1-2
Table 6.1.24.1.1-2: CA_4A-12A channel bandwidths
E-UTRA CA configuration / Bandwidth combination set
Maximum aggregated bandwidth
[MHz]
Bandwidth combination set
E-UTRA CA Configuration
E-UTRA
Bands
1.4
MHz
3
MHz
5
MHz
10
MHz
15
MHz
20
MHz
CA_4A-12A
4
Yes
Yes
Yes
Yes
20
0
12
Yes
Yes
4
Yes
Yes
Yes
Yes
Yes
Yes
30
1
12
Yes
Yes
4
Yes
Yes
Yes
Yes
30
2
12
Yes
Yes
Yes
4
Yes
Yes
20
3
12
Yes
Yes
4
Yes
Yes
Yes
Yes
30
4
12
Yes
Yes
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389f9b67c003a620147a83200e3331ae
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36.851
|
6.1.24.1.2 Co-existence studies for CA_4-12
| |
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.24.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 4 and Band 12 DL carriers can be calculated as shown in Table 6.1.24.1.2.1-1 below:
Table 6.1.24.1.2.1-1: Band 4 and Band 12 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
729
746
2110
2155
2nd order harmonics frequency range (MHz)
1458
1492
4220
4310
3rd order harmonics frequency range (MHz)
2187
2238
6330
6465
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1364
1426
2839
2901
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
618
697
3474
3581
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3568
3647
4949
5056
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
684
791
2093
2172
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
709
766
2100
2165
It can be seen from Table 6.1.24.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 12 may fall into the BS receive band of Band 21, while the 3rd IMD products caused by BS supporting CA of Band 4 and Band 12 may fall into the BS receive band of Bands 12, 13, 14, 17, 22, 28, 42, 43 and 44. Note that the calculation in Table 6.1.24.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 45 MHz DL frequency of Band 4 and the whole 17 MHz DL frequency of Band 12. If the BS is only transmitting an up to 20 MHz DL in Band 4 and an up to 10 MHz DL in Band 1 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of the Bands 12, 17, 22, 28, 42, 43 and 44 as shown in the last row in Table 6.1.24.1.2.1-1, and the 3rd IMD products will not fall into the BS own (up to 10 MHz) receive block within Band 12, and may only fall into the BS receive band of certain frequency range within Band 12 and Band 17 under the transmit configurations shown in Table 6.1.24.1.2.1-2 below.
Table 6.1.24.1.2.1-2: Band (4 + 12) BS transmit configurations with 3rd IMD within Bands 12 and 17 BS receive band
Band 4 DL channel bandwidth (MHz)
Band 12 DL channel bandwidth (MHz)
Lower edge of Band 12 DL frequency block (MHz)
Lower edge of IMD frequency limits (MHz)
15
5 or 10
729 – 730.9
714 – 715.9
20
5 or 10
729 – 735.9
709 – 715.9
It should be noted that Bands 21, 28 and 44 are not intended for use in the same geographical area as Bands 4 and 12. Therefore, the focus here will be on the IMD falling into Bands 12, 17, 22, 42 and 43.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 22, 42 or 43 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 4 and 12 BS transmitters do not share the same antenna with Band 22, 42 or 43 BS receiver.
On the other hand, it is recommended that Bands 4 and 12 BS transmitters should not share the same antenna with Band 22, 42 or 43 BS receiver, or Band 12 or 17 BS receiver for the affected frequency ranges if the aforementioned BS transmit configurations are used, in order to prevent BS receiver desensitization, unless the antenna path meets very stringent 3rd order PIM specification so that the PIM will not cause Band 12, 17, 22, 42 or 43BS receiver desensitization.
|
389f9b67c003a620147a83200e3331ae
|
36.851
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6.1.25 LTE Advanced Carrier Aggregation of Band 7 and Band 12
|
6.1.25.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.25.1.1 Channel bandwidths per operating band for CA
|
LTE inter-band carrier aggregation configuration CA_7A-12A shall be operated in E-UTRA CA band CA_7-12 as specified in table 6.1.25.1.1-1.
Table 6.1.25.1.1-1: CA_7-12 operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) operating band
Downlink (DL) operating band
BS receive / UE transmit
BS transmit / UE receive
FUL_low – FUL_high
FDL_low – FDL_high
CA_4-12
7
2500 MHz
–
2570 MHz
2620 MHz
–
2690 MHz
12
699 MHz
–
716 MHz
729 MHz
–
746 MHz
LTE inter-band carrier aggregation configuration CA_7A-12A shall be operated with E-UTRA channel bandwidths as specified in table 6.1.25.1.1-2
Table 6.1.25.1.1-2: CA_7A-12A channel bandwidths
E-UTRA CA configuration / Bandwidth combination set
Maximum aggregated bandwidth
[MHz]
Bandwidth combination set
E-UTRA CA Configuration
E-UTRA
Bands
1.4
MHz
3
MHz
5
MHz
10
MHz
15
MHz
20
MHz
CA_7A-12A
7
Yes
Yes
Yes
Yes
30
1
12
Yes
Yes
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389f9b67c003a620147a83200e3331ae
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36.851
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6.1.25.1.2 Co-existence studies for CA_7-12
| |
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.1.25.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 7 and Band 12 DL carriers can be calculated as shown in Table 6.1.25.1.2.1-1 below:
Table 6.1.25.1.2.1-1: Band 7 and Band 12 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
729
746
2620
2690
2nd order harmonics frequency range (MHz)
1458
1492
5240
5380
3rd order harmonics frequency range (MHz)
2187
2238
7860
8070
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1874
1961
3349
3436
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
1128
1232
4494
4651
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
4078
4182
5969
6126
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
659
816
2603
2707
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
709
766
2610
2700
It can be seen from Table 6.1.25.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 12 may fall into the BS receive band of Band 21, while the 2nd IMD products caused by BS supporting CA of Band 7 and Band 12 may fall into the BS receive band of Bands 1, 2, 22, 25, 33, 35, 36, 37, 39 and 42. In addition to this, 3rd order IMD products may fall in Bands 12, 13, 14, 17, 18, 26, 27, 28, 38, 41 and 44. Note that the calculation in Table 6.1.25.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 70 MHz DL frequency of Band 7 and the whole 17 MHz DL frequency of Band 12. If the BS is only transmitting up to 20 MHz DL in Band 7 and an up to 10 MHz DL in Band 12 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of the Bands 12, 17, 28, 38, 41 and 44 as shown in the last row in Table 6.1.25.1.2.1-1, and the 3rd IMD products will not fall into the BS own (up to 10 MHz) receive block within Band 12, and may only fall into the BS receive band of certain frequency range within Band 12 under the transmit configurations shown in Table 6.1.25.1.2.1-2 below.
Table 6.1.25.1.2.1-2: Band (7 + 12) BS transmit configurations with 3rd IMD within Bands 12 BS receive band
Band 7 DL channel bandwidth (MHz)
Band 12 DL channel bandwidth (MHz)
Lower edge of Band 12 DL frequency block (MHz)
Lower edge of IMD frequency limits (MHz)
15
5 or 10
729 – 730.9
714 – 715.9
20
5 or 10
729 – 735.9
709 – 715.9
It should be noted that Bands 1, 28 and 44 are not intended for use in the same geographical area as Bands 7 and 12. Also, bands 33, 35, 36, 37, 38 and 39 are not intended for use in the same geographical area as band 7 and 12. Therefore, the focus here will be on the IMD falling into Bands 2, 12, 17, 22 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 22 or 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 7 and 12 BS transmitters do not share the same antenna with Band 22 or 42 BS receiver.
In addition to this, it is recommended that Bands 7 and 12 BS transmitters should not share the same antenna with Band 26 BS receiver, or Band 12 BS receiver for the affected frequency ranges if the aforementioned BS transmit configurations are used, in order to prevent BS receiver desensitization, unless the antenna path meets very stringent 3rd order PIM specification so that the PIM will not cause Band 12, 17, 22 or 42 BS receiver desensitization.
6.1.25.1.3 ΔTIB,c and ΔRIB,c
For the UE which supports inter-band carrier aggregation configurations with uplink assigned to one E-UTRA band the ΔTIB,c is defined for applicable bands in Table 6.1.25.1.3-1.
Table 6.1.25.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_7A-12A
7
0.3
12
0.3
For the UE which supports inter-band carrier aggregation configuration in Table 6.1.25.1.1-2 with uplink in one E-UTRA band, the minimum requirement for reference sensitivity in Table 7.3.1-1 (TS 36.101) shall be increased by the amount given in ΔRIB,c in Table 6.1.25.1.3-2 for the applicable E-UTRA bands.
Table 6.1.25.1.3-2: ΔRIB,c
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_7A-12A
7
0
12
0
6.2 Class A2. Low-high band combination with harmonic relation between bands
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389f9b67c003a620147a83200e3331ae
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36.851
|
6.2.1 LTE Advanced Carrier Aggregation of Band 1 and Band 28 (1 UL)
|
CA_1A-28A is designed to operate in the operating bands defined in table 6.1.22-1.
Table 6.2.1-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) operating band
Downlink (DL) operating band
Duplex Mode
BS receive / UE transmit
BS transmit / UE receive
FUL_low – FUL_high
FDL_low – FDL_high
CA_1-28
1
1920 MHz
–
1980 MHz
2110 MHz
–
2170 MHz
FDD
28
703 MHz
–
748 MHz
758 MHz
–
803 MHz
6.2.1.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.2.1.1.1 Channel bandwidths per operating band for CA
|
Table 6.2.1.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_1A-28A
1
Yes
Yes
Yes
Yes
40
0
28
Yes
Yes
Yes
Yes
CA_1A-28A
1
Yes
Yes
20
1
28
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.2.1.1.2 Co-existence studies for 1UL/2DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 1 and Band 28 DL carriers can be calculated as shown in table 6.2.1.1.2.1-1 below:
Table 6.2.1.1.2-1: Band 1 and Band 28 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
758
803
2110
2170
2nd order harmonics frequency range (MHz)
1516
1606
4220
4340
3rd order harmonics frequency range (MHz)
2274
2409
6330
6510
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
1307
1412
2868
2973
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
504
654
3417
3582
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
3626
3776
4978
5143
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
698
863
2065
2215
3rd order IMD products (with maximum channel bandwidth)
(f1_low – f2_BWmax)
(f1_high + f2_BWmax)
(f2_low – f1_BWmax)
(f2_high + f1_BWmax)
IMD frequency limits (MHz)
738
823
2090
2190
It can be seen from table 6.2.1.1.2-1 that that the 3rd harmonics of BS transmitting in Bands 28 may fall into the BS receive band of Bands 30 and 40, while the 3rd IMD products supporting CA of Band 1 and Band 28 may fall into the BS receive band of Bands 5, 6, 12, 13, 14, 17, 18, 19, 20, 22, 26, 27, 28, 42, 43 and 44. Note that the calculation in table 6.2.1.1.2-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 1 and the whole 45 MHz DL frequency of Band 28. If the BS is only transmitting an up to 20 MHz DL in Band 1 and an up to 20 MHz DL in Band 28 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of the Bands 13, 14, 18, 22, 26, 27, 28, 42, 43 and 44 as shown in the last row in table 6.2.1.1.2-1. Moreover, the 3rd IMD products may only fall into the BS receive band of certain frequency range within Bands 18, 26, 27 and 28 under the transmit configurations shown, respectively, in tables 6.2.1.1.2-2, 6.2.1.1.2-3, 6.2.1.1.2-4 and 6.2.1.1.2-5 below. Note that the available frequency range for mobile cellular communications in Japan is 718 – 748 MHz for UL and 773 – 803 MHz for DL.
Table 6.2.1.1.2-2: Band (1 + 28) BS transmit configurations with 3rd IMD within Band 18 BS receive band
Band 28 DL channel bandwidth (MHz)
Higher edge of Band 28 DL frequency block (MHz)
Band 1 DL channel bandwidth (MHz)
Higher edge of IMD frequency limits (MHz)
5, 10, 15 or 20
800.1 – 803
15
815.1 – 818
5, 10, 15 or 20
795.1 – 803
20
815.1 – 823
Table 6.2.1.1.2-3: Band (1 + 28) BS transmit configurations with 3rd IMD within Band 26 BS receive band
Band 28 DL channel bandwidth (MHz)
Lower edge of Band 28 DL frequency block (MHz)
Band 1 DL channel bandwidth (MHz)
Higher edge of IMD frequency limits (MHz)
5, 10, 15 or 20
799.1 – 803
15
814.1 – 818
5, 10, 15 or 20
794.1 – 803
20
814.1 – 823
Table 6.2.1.1.2-4: Band (1 + 28) BS transmit configurations with 3rd IMD within Band 27 BS receive band
Band 28 DL channel bandwidth (MHz)
Higher edge of Band 28 DL frequency block (MHz)
Band 1 DL channel bandwidth (MHz)
Higher edge of IMD frequency limits (MHz)
5, 10, 15 or 20
792.1 – 803
15
807.1 – 818
5, 10, 15 or 20
787.1 – 803
20
807.1 – 823
Table 6.2.1.1.2-5: Band (1 + 28) BS transmit configurations with 3rd IMD within Band 28 BS receive band
Band 28 DL channel bandwidth (MHz)
Lower edge of Band 28 DL frequency block (MHz)
Band 1 DL channel bandwidth (MHz)
Lower edge of IMD frequency limits (MHz)
5, 10, 15 or 20
758 – 762.9
15
743 – 747.9
5, 10, 15 or 20
758 – 767.9
20
738 – 747.9
It should be noted that Bands 13, 14, 30, 40 and 43 are not intended for use in the same geographical area as Bands 1 and 28. Moreover, co-location of Band (1 + 28) transmitter and Band 44 transceiver implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the IMD falling into Bands 18, 22, 26, 27, 28 and 42.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, we expect the IMD interference generated within the Band 22 or 42 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 1 and 28 BS transmitters do not share the same antenna with Band 22 or 42 BS receiver.
On the other hand, it is recommended that Bands 1 and 28 BS transmitters should not share the same antenna with Band 22 or 42 BS receiver, or Band 18, 26, 27 or 28 BS receiver for the affected frequency ranges if the aforementioned BS transmit configurations are used, in order to prevent BS receiver desensitization, unless the antenna path meets very stringent 3rd order PIM specification so that the PIM will not cause Band 18, 22, 26, 27, 28 or 42 BS receiver desensitization.
6.2.1.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_1A-28A the ΔTIB,c is defined for applicable bands in table 6.2.1.1.3-1.
Table 6.2.1.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_1A-28A
1
0.3
28
0.6
For the UE which supports CA_1A-28A the ΔRIB is defined for applicable bands in table 6.2.1.1.3-2.
Table 6.2.1.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_1A-28A
1
0
28
0.2
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6.2.1.1.4 Maximum sensitivity reduction for Band 1
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When Band 1 DL is operated simultaneously with Band 28 UL there is a potential self-interference situation as the third harmonic of Band 28 UL will be on the same frequency range as the Band 1 DL. It is agreed that 3GPP will set the limit for this interference by specifying maximum sensitivity degradation (MSD) in TS 36.101 [4]. After intensive discussion in RAN4, required MSDs are specified in Table 6.2.1.1.4-1.
Table 6.2.1.1.4-1: Reference sensitivity for carrier aggregation QPSK PREFSENS, CA (exceptions) without HTF
Channel bandwidth
EUTRA CA Configuration
EUTRA band
1.4 MHz
(dBm)
3 MHz
(dBm)
5 MHz
(dBm)
10 MHz
(dBm)
15 MHz
(dBm)
20 MHz
(dBm)
Duplex mode
CA_1A-28A5,6
1
[-89.8]
[-89.4]
[-89]
[-88.7]
FDD
28
-98.3
-95.3
-93.5
-90.8
NOTE 1: The transmitter shall be set to PUMAX as defined in subclause 6.2.5A of TS36.101.
NOTE 2: Reference measurement channel is A.3.2 with one sided dynamic OCNG Pattern OP.1 FDD/TDD as described in Annex A.5.1.1/A.5.2.1
NOTE 3: The signal power is specified per port
NOTE 4: No requirements apply when there is at least one individual RE within the uplink transmission bandwidth of the low band for which the 2nd transmitter harmonic is within the downlink transmission bandwidth of the high band. The reference sensitivity is only verified when this is not the case (the requirements specified in clause 7.3.1 of TS36.101 apply).
NOTE 5: These requirements apply when there is at least one individual RE within the uplink transmission bandwidth of the low band for which the 3rd transmitter harmonic is within the downlink transmission bandwidth of the high band.
NOTE 6: The requirements should be verified for UL EARFCN of the low band (superscript LB) such that in MHz and with the carrier frequency of the high band in MHz and the channel bandwidth configured in the low band.
6.3 Class A3. Low-low or high-high band combinations
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6.3.1 LTE-Advanced Carrier Aggregation of Band 1 and Band 7 (1 UL)
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Table 6.3.1-1: Inter-band CA
E-UTRA CA Band
E-UTRA operating Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
UE transmit / BS receive
Channel BW MHz
UE receive / BS transmit
Channel BW MHz
FUL_low – FUL_high
FDL_low – FDL_high
CA_1-7
1
1920 MHz
–
1980 MHz
15
2110 MHz
–
2170 MHz
15
FDD
7
2500 MHz
–
2570 MHz
15, 20
2620 MHz
–
2690 MHz
15, 20
6.3.1.1 List of specific combination issues
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6.3.1.1.1 Channel bandwidths per operating band for CA
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Table 6.3.1.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_1A-7A
1
Yes
7
Yes
Yes
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6.3.1.1.2 Co-existence studies for 1UL/2DL
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Table 6.3.1.1.2-1 gives the intermodulation products for band 1 + band 7 CA with 2DLs. For the 3-tone IMD analysis the maximum transmission as defined in table 6.3.1.1.1-1 is considered. Three-tone third order IMD products will not fall into the BS own receive block if the frequency range as defined with the channel bandwidths given in table 6.3.1.1.1-1 are used for the more detailed IMD calculation.
Considering bands in the same geographical area we observe that the BS distortion could fall into the BS receive bands of band 3. With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters the IMDs generated within the band 3 receiver should be well below the receiver noise floor eliminating the possibility of receiver desensitization. Provided that the bands 1 and 7 BS transmitters should not share the same antenna with band 3 BS receiver.
Table 6.3.1.1.2-1: 2DLs B1 + B7 IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
2110
2170
2620
2690
2nd order harmonics frequency range (MHz)
4220 to 4340
5240 to 5380
3rd order harmonics frequency range (MHz)
6330 to 6510
7860 to 8070
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
450 to 580
4730 to 4860
Two-tone 3rd order IMD products
2*f1_low – f2_high
&
(2*f1_low + f2_low)
2*f1_high – f2_low
&
(2*f1_high + f2_high)
2*f2_low – f1_high
&
(2*f2_low + f1_low)
2* f2_high – f1_low
&
(2*f2_high + f1_high)
IMD frequency range (MHz)
1530 to 1720
6840 to 7030
3070 to 3270
7350 to 7550
Three-tone 3rd order IMD products
(f1_low –
max BW f2)
(f1_high +
max BW f2)
(f2_low –
max BW f1)
(f2_high +
max BW f1)
IMD frequency range (MHz)
2090 to 2190
2605 to 2705
Table 6.3.1.1.2-2 gives the intermodulation products for band 1+ band 7 CA with 1UL. None of the intermodulation products fall into the own and any other receive bands.
Table 6.3.1.1.2-2: 1UL B1 + B7 harmonic products
UE UL carriers
f1_low
f1_high
f2_low
f2_high
UL frequency (MHz)
1920
1980
2500
2570
2nd order harmonics frequency range (MHz)
3840 to 3960
5000 to 5140
3rd order harmonics frequency range (MHz)
5760 to 5940
7500 to 7710
6.3.1.1.3 ∆TIB and ∆RIB values
The reported additional IL (Insertion Loss) values, based on implementation/simulation data, under ETC (Extreme Temperature Conditions) for combining band 1 and band 7, for each of the Tx and Rx paths, are shown in table 6.3.1.1.3-1.
Table 6.3.1.1.3-1: IL values for band 1 + 7 diplexer and quadplexers (under ETC)
E-UTRA bands
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
1 Tx
0.4
0.7
0.4
1.2
0.85
1.1
1 Rx
0.37
0.7
0.2
1.4
0.98
0.7
7 Tx
0.63
1.2
0.7
1.2
1.02
1.2
7 Rx
0.58
1.2
0.4
0.6
0.84
0.8
For the reported additional IL values, the corresponding average additional IL values for the Tx and the Rx paths, from [2], are shown in table 6.3.1.1.3-2:
Table 6.3.1.1.3-2: Average Tx and Rx IL for combining band 1 and band 7 (under ETC)
Inter-band CA Configuration
E-UTRA Band
Tx IL [dB]
Rx IL [dB]
1
0.80
0.70
7
1.03
0.90
For two simultaneous DLs and one UL the TIB,c and RIB values, from [2], are shown in table 6.3.1.1.3-3, and in table 6.3.1.1.3-4:
Table 6.3.1.1.3-3: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_1A-7A
1
0.5
7
0.6
Table 6.3.1.1.3-4: ΔRIB,c
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_1A-7A
1
0.0
7
0.05
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6.3.2 LTE-Advanced Carrier Aggregation of Band 39 and Band 41
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Table 6.3.2-1: Inter-band CA
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_39-41
39
1880 MHz
–
1920 MHz
10, 15, 20
(note 1)
1880 MHz
–
1920 MHz
10, 15, 20
TDD
41
2496 MHz
–
2690 MHz
20 (note 1)
2496 MHz
–
2690 MHz
20
NOTE 1: The first part of the WI considers only one uplink component carrier to be used in any of the two frequency bands at any time.
6.3.2.1 List of specific combination issues
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6.3.2.1.1 Channel bandwidths per operating band for CA
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Table 6.3.2.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_39-41A
39
Yes
Yes
Yes
41
Yes
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6.3.2.1.2 Co-existence studies for 1UL/2DL
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Table 6.3.2.1.2-1 gives the intermodulation products for band 39 + band 41 CA with 2 DLs. For the 3-tone IMD analysis the maximum transmission as defined in table 6.3.2.1.1-1 is considered. None of the harmonics of one band fall into the receive band of the other. The intermodulation products generated by two operating bands do not impact the own receiver since TDD BS cannot transmit and receive simultaneously in a single band.
We have listed all the possible interference to other operating bands in table 6.3.2.1.2-2. It can be seen in the table that 2nd order harmonics may fall into BS receive band of band 43, two-tone 2nd order IMD products may fall into BS receive band of band 12, 13, 14,17, 27, 28, 44, two-tone 3rd order IMD products may fall into BS receive band of band 22 and band 42, and three-tone 3rd order IMD products caused by BS supporting carrier aggregation of band 39 and band 41 may fall into the BS receive band of band 1, 2, 7, 25, 33, 35, 36, 37, 38.
Currently Bands 1, 42 and 44 are used in the same geographical area as Bands 39 and 41. With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 1, 42 or 44 receiver would be well below the receiver noise floor, in order to avoid the possibility of receiver desensitization. Thus it is recommended that Bands 39 and 41 BS transmitters do not share the same antenna with Band 1, 42 or 44 BS receivers, unless the antenna path meets more stringent 2nd and 3rd order PIM specification so that the PIM will not cause Band 1, 42 or 44 BS receivers desensitization. Note that antenna sharing may be allowed as the state-of-the-art continues to evolve in the future.
Table 6.3.2.1.2-1: 2 DLs B39 + B41 harmonics and IMD products frequency limits
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
1880
1920
2496
2690
2nd order harmonics frequency range (MHz)
3760 to 3840
4992 to 5380
3rd order harmonics frequency range (MHz)
5640 to 5760
7488 to 8070
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
575 to 810
4376 to 4610
Two-tone 3rd order IMD products
2*f1_low – f2_high
2*f1_high – f2_low
2*f2_low – f1_high
2* f2_high – f1_low
IMD frequency range (MHz)
1070 to 1344
3072 to 3500
Three-tone 3rd order IMD products
f1_low –
max BW f2
f1_high +
max BW f2
f2_low –
max BW f1
f2_high +
max BW f1
IMD frequency range (MHz)
1860 to 1940
2476 to 2710
Table 6.3.2.1.2-2: possible interference to other bands
Victim Bands
Receiver frequency range (MHz)
Interference type
Interference frequency range (MHz)
Band 1
1920 to 1980
Three-tone 3rd order IMD products
1860 to 1940
Band 2
1850 to 1910
Three-tone 3rd order IMD products
1860 to 1940
Band 7
2500 to 2570
Three-tone 3rd order IMD products
2476 to 2710
Band 12
699 to 716
Two-tone 2nd order IMD products
576 to 810
Band 13
777 to 787
Two-tone 2nd order IMD products
576 to 810
Band 14
788 to 798
Two-tone 2nd order IMD products
576 to 810
Band 17
704 to 716
Two-tone 2nd order IMD products
576 to 810
Band 22
3410 to 3490
Two-tone 3rd order IMD products
3072 to 3500
Band 25
1850 to 1915
Three-tone 3rd order IMD products
1860 to 1940
Band 27
807 to 824
Two-tone 2nd order IMD products
576 to 810
Band 28
703 to 748
Two-tone 2nd order IMD products
576 to 810
Band 33
1900 to 1920
Three-tone 3rd order IMD products
1860 to 1940
Band 35
1850 to 1910
Three-tone 3rd order IMD products
1860 to 1940
Band 36
1930 to 1990
Three-tone 3rd order IMD products
1860 to 1940
Band 37
1910 to 1930
Three-tone 3rd order IMD products
1860 to 1940
Band 38
2570 to 2620
Three-tone 3rd order IMD products
2476 to 2710
Band 42
3400 to 3600
Two-tone 3rd order IMD products
3072 to 3500
Band 43
3600 to 3800
2nd order harmonics
3760 to 3840
Band 44
703 to 803
Two-tone 2nd order IMD products
576 to 810
Table 6.3.2.1.2-3 gives the harmonic products for band 39 + band 41 CA with 1 UL. None of the harmonic products fall into the own receive bands. For the UE, the distortion of band 39 could fall into the UE receive bands for band 43. As currently there is no deployment for band 39&41 and band 43 in the same geographical area, and a UE does not operate simultaneously in B39 + B41 and band 43, this should be not a problem in case the UE supports this band.
Table 6.3.2.1.2-3: 1 UL B39 + B41 harmonic products
UE UL carriers
f1_low
f1_high
f2_low
f2_high
UL frequency (MHz)
1880
1920
2496
2690
2nd order harmonics frequency range (MHz)
3760 to 3840
4992 to 5380
3rd order harmonics frequency range (MHz)
5640 to 5760
7488 to 8070
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6.3.2.1.3 UEs supporting or not supporting simultaneous reception and transmission
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According to TS 36.331[5], for inter-band TDD CA, there is an element simultaneous Rx-Tx in the IE UE-EUTRA-Capability described as following.
simultaneousRx-Tx
Indicates whether the UE supports simultaneous reception and transmission on different bands for each band combination listed in supportedBandCombination. This field is only applicable for inter-band TDD carrier aggregation.
According to this capability, two kinds of UEs can be considered for inter-band TDD carrier aggregation, i.e. the UE supporting simultaneous reception and transmission on different bands and the UE not supporting simultaneous reception and transmission on different bands. Accordingly, different UE reference architecture may be considered for UE requirement development depending on the need.
The focus of current TDD inter-band CA is 2DL+1UL not supporting simultaneous Tx/Rx. In this regard, the following reference UE architecture will be used as baseline for UE requirement development. The benefits of this architecture is that there would be no relaxation necessary for maximum output power which is critical for operation uplink coverage.
Figure 6.3.2.1.3-1: Reference UE architecture for CA_B39_B41 with 2DL+1UL
6.3.2.1.4 ΔTIB,c and ΔRIB,c values
The reported additional IL (Insertion Loss) values, based on implementation/simulation data, under ETC (Extreme Temperature Conditions) for combining band 39 and band 41, for each of the Rx paths, are shown in Table 6.3.2.1.4-1. There is no additional IL for the Tx paths of each band according to the Reference UE architecture in Figure 6.3.2.1.3-1.
Table 6.3.2.1.4-1: Rx IL values for band 39 + 41 diplexer (under ETC)
E-UTRA bands
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
IL (dB)
39 Rx
0.85
0.8
0.8
0.9
0.75
0.88
1.1
0.8
0.8
41 Rx
0.8
0.9
1.2
0.9
0.75
1.0
1.1
1.4
0.7
For the reported additional IL values, the corresponding average additional IL values for the Tx and the Rx paths, are shown in Table 6.3.2.1.4-2:
Table 6.3.2.1.4-2: Average Tx and Rx IL for combining band 39 and band 41 (under ETC)
Inter-band CA Configuration
E-UTRA Band
Tx IL [dB]
Rx IL [dB]
39
0
0.85
41
0
0.89
For TDD inter-band CA_B39_B41 UE supporting 2DL +1UL without simultaneous Rx/Tx, the TIB,c and RIB values are given in Table6.3.2.1.4-3/4.
Table 6.3.2.1.4-3: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_39A-41A
39
0
41
0
Table 6.3.2.1.4-4: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_39A-41A
39
0.2
41
0.2
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6.3.3 LTE-Advanced Carrier Aggregation of Band 8 and Band 27 (1 UL)
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Table 6.3.3-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_8-27
8
880 MHz
–
915 MHz
5, 10
925 MHz
–
960 MHz
5, 10
FDD
27
807 MHz
–
824 MHz
5, 10
852 MHz
–
869 MHz
5, 10
6.3.3.1 List of specific combination issues
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6.3.3.1.1 Channel bandwidths per operating band for CA
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Table 6.3.3.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_8A-27A
8
Yes
Yes
27
Yes
Yes
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6.3.3.1.2 Co-existence studies for CA_8-27
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As shown in table 6.3.3.1.2-1, the harmonic frequencies of Band 8 and Band 27 in UL are away from the receive bands of interest in the DL and therefore we can conclude that there is no issue on harmonic interference.
Table 6.3.3.1.2-1: Impact of UL/DL Harmonic Interference
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
DL Low Band Edge
DL High Band Edge
DL Low Band Edge
DL High Band Edge
8
880
915
925
960
1760
1830
2640
2745
1850
1920
1775
2880
27
807
824
852
869
1614
1648
2421
2472
1704
1738
2556
2607
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6.3.3.1.2.1 Co-existence studies for 1 UL/2 DL
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The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 8 and Band 27 DL carriers can be calculated as shown in Table 6.3.3.1.2.1-1 below:
Table 6.3.3.1.2.1-1: Band 8 and Band 27 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
925
960
852
869
2nd order harmonics frequency range (MHz)
1850
1920
1704
1738
3rd order harmonics frequency range (MHz)
2775
2880
2556
2607
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
56
108
1777
1829
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
981
1068
744
813
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
2702
2789
2629
2698
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
908
977
817
904
3rd order IMD products
(Considering Max BW)
(f1_low – max BW f2)
(f1_high + max BW f2)
(f2_low – max BW f1)
(f2_high + max BW f1)
IMD frequency limits (MHz)
915
970
842
879
It can be seen from Table 6.3.3.1.2.1-1 that the 2nd harmonics of BS transmitting in Band 8 may fall into the BS receive band of Bands 2, 25, 33, 35,37 and 39 and none of 3rd harmonics may fall into the any E-UTRA operating BS receive band. In addition 2nd harmonics of BS transmitting in Band 27 may fall into the BS receive band of Bands 3, 4 , 10 and 3rd harmonics may fall into BS receive band of Bands 7, 38 and 41.
Meanwhile the 2nd IMD products caused by BS supporting carrier aggregation of Band 8 and Band 27 may fall into the BS receive band of Band 3, 9 and 3rd IMD products may fall into the BS receive band of Band 5, 6, 8, 13, 14, 18, 19, 20, 26, 27, 28, 41 and 44. Note that the calculation in Table 6.3.3.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 35 MHz DL frequency of Band 8 and the whole 17 MHz DL frequency of Band 27.
If the BS is only transmitting an up to 10 MHz DL in Band 8 and 10 MHz in Band 27 as stated in the WIDs, the 3rd IMD products will not fall into the BS receive band of the Band 6, 8, or 18
It should be noted that Bands 2, 4, 10, 13, 14, 18, 19, 20, 25, 33, 35, 37, 38 and 39 are not intended for use in the same geographical area as Bands 8 and 27. Therefore, the focus here will be on the harmonics and IMD falling into Bands 3, 5, 7, 9, 26, 27, 28, 41 and 44. With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 3, 5, 7, 8, 9, 26, 27, 28, 41 or 44 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 8 and 27 BS transmitters do not share the same antenna with Band 3, 5, 7, 8, 9, 26, 27, 28, 41 or 44 BS receiver.
6.3.3.1.3 ∆TIB and ∆RIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 8 and Band 27.
Table 6.3.3.1.3-1: IB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_8A-27A
8
[FFS]
27
[FFS]
Table 6.3.3.1.3-2: RIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_8A-27A
8
[FFS]
27
[FFS]
|
389f9b67c003a620147a83200e3331ae
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36.851
|
6.3.4 LTE-Advanced Carrier Aggregation of Band 1 and Band 3
|
CA_1-3 is designed to operate in the operating bands defined in Table 6.3.4-1.
Table 6.3.4-1: Inter band CA
E-UTRA Operating Band
Uplink (UL) operating band BS receive
UE transmit
Downlink (DL) operating band
BS transmit
UE receive
Duplex Mode
FUL_low – FUL_high
FDL_low – FDL_high
1
1920 MHz
–
1980 MHz
2110 MHz
–
2170 MHz
FDD
3
1710 MHz
–
1785 MHz
1805 MHz
–
1880 MHz
FDD
6.3.4.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.4.1.1 Channel bandwidths per operating band for CA
|
Table 6.3.4.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_1A-3A
1
Yes
Yes
Yes
Yes
3
Yes
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.4.1.2 Co-existence studies for CA_1-3
|
Table 6.3.4.1.2-1 gives the harmonics and IMD products for band 1 + band 3 CA with 2DLs. It shows that the second harmonics may fall into BS receive band of Band 43, and no third harmonics will fall into any BS receive band specified by 3GPP. In addition, no second order intermodulation products will fall into any BS receive band. The third order intermodulation products may fall into the BS receive band of Band 2, 7, 11, 21, 24, 25, 35, 39, 40 and 41.
Note that Band 2, 25 and 35 are not intended for use in the same geographical area as Band 1 and Band 3. It is suggested BS transmitters supporting CA of Band 1 and Band 3 should not share the same antenna with Band 7, 11, 21, 24, 39, 40, 41 and 43 BS receiver, unless the antenna path meets very stringent third order PIM specification so that the PIM will not cause Band 7, 11, 21, 24, 39, 40, 41 and 43 BS receiver desensitization. Specific analysis on the harmonics and IMD products with consideration on the adopted bandwidth and the carrier places are needed if considering the shared antenna.
Table 6.3.4.1.2-1: 2DLs B1 + B3 Harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
2110
2170
1805
1880
2nd order harmonics frequency range (MHz)
4220 to 4340
3610 to 3760
3rd order harmonics frequency range (MHz)
6330 to 6510
5415 to 5640
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
230 to 365
3915 to 4050
Two-tone 3rd order IMD products
2*f1_low – f2_high
&(2*f1_low + f2_low)
2*f1_high – f2_low
& (2*f1_high + f2_high)
2*f2_low – f1_high
&(2*f2_low + f1_low)
2* f2_high – f1_low&
(2*f2_high + f1_high)
IMD frequency range (MHz)
2340 to 2535
6025 to 6220
1440 to 1650
5720 to 5930
Three-tone 3rd order IMD products
(f1_low – max BW f2)
(f1_high + max BW f2)
(f2_low – max BW f1)
(f2_high + max BW f1)
IMD frequency range (MHz)
2090 to 2190
1785 to 1900
Table 6.3.4.1.2-2 gives the harmonic products for band 1+ band 3 CA with 1UL. None of the harmonic products fall into the own and any other receive bands.
Table 6.3.4.1.2-2: 1UL B1 + B3 harmonic products
UE UL carriers
f1_low
f1_high
f2_low
f2_high
UL frequency (MHz)
1920
1980
1710
1785
2nd order harmonics frequency range (MHz)
3840 to 3960
3420 to 3570
3rd order harmonics frequency range (MHz)
5760 to 5940
5130 to 5355
6.3.4.1.3 ∆TIB and ∆RIB values
The Quadplexer data for CA_B1_B3 was summarized in following table 6.3.4.1.3-1.
Table 6.3.4.1.3-1: Quadplexer data from some companies
Additional IL
Isolation
B1 Tx
B1 Rx
B3 Tx
B3 Rx
B1 Tx to B1 Rx
B1 Tx to B3 Rx
B3 Tx to B3 Rx
B3 Tx to B1 Rx
R4-143259
1.4
1.1
0.7
0.9
No data
40
No data
No data
R4-143006
1.9
1.3
No data
No data
No data
50
No data
No data
0.8
0.9
1.2
1.9
No data
46
No data
No data
0.3
0.7
0.7
0.5
No data
40
No data
No data
R4-143958
0.7
0.7
0.5
0.8
60
60
60
60
0.5
0.3
0.5
0.5
50
50
50
50
0.3
0.5
0.2
0.5
52
50
50
50
0
0.1
0.2
0.5
52
50
50
50
R4-142947
0.5
0.3
0.5
0.5
55
50
50
50
Average
0.71
0.66
0.56
0.76
53.8
48.4
52
52
Median
0.5
0.7
0.5
0.5
52
50
50
50
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 1 and Band 3.
Table 6.3.4.1.3-2: IB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_1A-3A
1
0.3
3
0.3
Table 6.3.4.1.3-3: RIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_1A-3A
1
0
3
0
|
389f9b67c003a620147a83200e3331ae
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36.851
|
6.3.5 LTE-Advanced Carrier Aggregation of Band 7 and Band 8
|
CA_7A-8A is designed to operate in the operating bands defined in table 6.3.5-1.
Table 6.3.5-1: Inter band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_7-8
7
2500 MHz
–
2570 MHz
10, 15, 20
2620 MHz
–
2690 MHz
10, 15, 20
FDD
8
880 MHz
–
915 MHz
3, 5, 10
925 MHz
–
960 MHz
3, 5, 10
6.3.5.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.5.1.1 Channel bandwidths per operating band for CA
|
Table 6.3.5.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
Maximum aggregate bandwidth [MHz]
Bandwidth Combination Set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_7A-8A
7
Yes
Yes
Yes
30
0
8
Yes
Yes
Yes
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.5.1.2 Co-existence studies for CA_7-8
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 7 and Band 8 DL carriers can be calculated as shown in table 6.3.5.1.2-1 below:
Table 6.3.5.1.2-1: Co-existence studies for 1 UL/2 DL
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
925
960
2620
2690
2nd order harmonics frequency range (MHz)
1850 to 1920
5240 to 5380
3rd order harmonics frequency range (MHz)
2775 to 2880
7860 to 8070
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
1660 to 1765
3545 to 3650
Two-tone 3rd order IMD products
2*f1_low – f2_high
&
(2*f1_low + f2_low)
2*f1_high – f2_low
&
(2*f1_high + f2_high)
2*f2_low – f1_high
&
(2*f2_low + f1_low)
2* f2_high – f1_low
&
(2*f1_high + f2_high)
IMD frequency range (MHz)
700 to 840
4470 to 4610
4280 to 4455
6165 to 6340
Three-tone 3rd order IMD products
(f1_low –
max BW f2)
(f1_high +
max BW f2)
(f2_low –
max BW f1)
(f2_high +
max BW f1)
IMD frequency range (MHz)
905 to 980
2610 to 2700
As it can be seen from table 6.3.5.1.2-1, the 2nd order harmonics from BS transmitting in Band 8 may fall in the BS receive band of Bands 2, 25, 33, 35, 37, 39. Additionally 2nd order IMD products may fall into the BS receive band of Bands 3, 4, 9, 10, 24, 42 and 43. While 3rd order IMD products may fall into the BS receive band of Bands 5, 6, 12, 13, 14, 17, 18, 19, 20, 26, 27, 28, 38, 41 and 44.
Note that the calculation in table 6.3.5.1.2-1 (except the last row) assumes the BS is transmitting with the whole 70 MHz DL frequency of Band 7 and the whole 35 MHz DL frequency of Band 8. If the BS is only transmitting up to 20 MHz DL in Band 7 and up to 10 MHz DL in Band 8 as stated in the WID, then the 3rd IMD products may only fall into the BS receive band of certain frequency range within Bands 8, 38 and 41.
The transmit configurations of the BS transmitting in Bands 7+8 with 3rd IMD products into Band 8 receive band are:
Table 6.3.5.1.2-2: Band (7 + 8) BS transmit configurations with 3rd IMD within Bands 8 BS receive band (880-915MHz)
Band 8 DL channel bandwidth (MHz)
lower edge of Band 8 DL frequency block (MHz)
Band 7 DL channel bandwidth (MHz)
IMD frequency limits (MHz)
5
925 - 930
15
910 - 915
5
925 - 930
20
905 - 915
10
925 - 935
15
910 - 915
10
925 - 935
20
905 - 815
As it can be seen from table 6.3.5.1.2-2 when Band 7 uses 15/20MHz there may be IMD products falling into Band 8 receive band. In such cases, it could be necessary to avoid sharing the same RF path for both transmitter and receiver side, or avoid such configurations in the BS.
In table 6.3.5.1.2-3 the harmonic interference study is provided from UL perspective for Band 7 and 8. It can be seen that the harmonic frequencies fall in the UL and DL bands of Band 3. This scenario is already covered by current specifications and hence no further relaxation is required for that. It can also be seen that 3rd harmonic interference from UL Band 8 falls into Band 7 receiver band in a general case. However it is under discussion if current spectrum holdings can be taken into account, and be verified if there is no harmonic impact.
Table 6.3.5.1.2-3: Impact of UL Harmonic Interference
2nd Harmonic
3rd Harmonic
Band
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
UL Low Band Edge
UL High Band Edge
7
2500
2570
5000
5140
7500
7710
8
880
915
1760
1830
2640
2745
6.3.5.1.3 ∆TIB and ∆RIB values
Following relaxations are allowed for the UE which supports inter-band carrier aggregation of Band 7 and Band 8.
Table 6.3.5.1.3-1: IB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_7A-8A
7
0.3
8
0.6
Table 6.3.5.1.3-2: RIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_7A-8A
7
0
8
0.2
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.5.1.4 MSD
|
A part of the uplink of Band 8, specifically 880-897MHz (only first 17MHz) may create third order harmonics into part of Band 7 downlink, specifically 2640-2690MHz (only last 50MHz).
The specification of this band into 36.101 will consider the additional insertion losses of a low-high combination plus the additional trap filter to attenuate the harmonic distortion. Additionally for those frequencies that can create harmonic interference an exception to reference sensitivity (as derived through MSD) is created.
The uplink configuration is limited in such a way that the 3rd harmonic overlap is maximized on the SCC in the high band. However, at the same time, the uplink configuration should respect the limitations needed for reference sensitivity on the PCC since both PCC and SCC are tested simultaneously. In the case of Band 8, the uplink configuration is limited to 25 RB in Table 7.3.1-2 of 36.101. Thus, the upper limit for MSD testing should also be limited to 25 RB so that the conditions for reference sensitivity on the PCC can be maintained.
Table 6.3.5.1.5-2: Reference sensitivity for carrier aggregation QPSK PREFSENS, CA
Channel bandwidth
EUTRA CA Configuration
EUTRA band
1.4 MHz
(dBm)
3 MHz
(dBm)
5 MHz
(dBm)
10 MHz
(dBm)
15 MHz
(dBm)
20 MHz
(dBm)
Duplex mode
CA_7A-8A
7
-87.4
-87
-86.7
FDD
8
-99
-96.8
-93.8
NOTE 1: These requirements apply when there is at least one individual RE within the transmission bandwidth of the low band for which the 3rd harmonic is within transmission bandwidth of the high band. And this is applicable when Band 8 UL is confined between 880MHz and 897MHz and simultaneously Band 7 DL is confined within 2640MHz and 2690MHz. Otherwise this requirement does not apply. The requirements is verified for UL EARFCN of the low band (superscript LB) such that in MHz and with the carrier frequency of the high band in MHz and the channel bandwidth configured in the low band.
Table 6.3.5.1.5-3: Uplink configuration for the low band
E-UTRA Band / Channel bandwidth of the high band / NRB / Duplex mode
EUTRA CA Configuration
UL band
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
Duplex mode
CA_7A-8A
8
5
8
16
FDD
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.6 LTE Advanced Carrier Aggregation of Band 2 and Band 30
|
6.3.6.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.6.1.1 Channel bandwidths per operating band for CA
| |
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.6.1.2 Co-existence studies for CA_2-30
| |
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.6.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 2 and Band 30 DL carriers can be calculated as shown in Table 6.3.6.1.2.1-1 below:
Table 6.3.6.1.2.1-1: Band 2 and Band 30 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
1930
1990
2350
2360
2nd order harmonics frequency range (MHz)
3860
3980
4700
4720
3rd order harmonics frequency range (MHz)
5790
5970
7050
7080
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
360
430
4280
4350
3rd order IMD products
(f2_low – 2*f1_high)
|(2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
1500
1630
2710
2790
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
6210
6340
6630
6710
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
1920
2000
2290
2420
3rd order IMD products
(Considering Max BW)
(f1_low – max BW f2)
(f1_high + max BW f2)
(f2_low – max BW f1)
(f2_high + max BW f1)
IMD frequency limits (MHz)
1920
2000
2330
2380
It can be seen from Table 6.3.6.1.2.1-1 that the 2nd and 3rd harmonics as well as the 2nd IMD products of BS transmitting in Bands 2 and 30 will not fall into the BS receive band of any frequency band currently defined in 3GPP, but the 3rd IMD products supporting CA of Band 2 and Band 30 may fall into the BS receive band of Bands 1, 24, 30, 36, 37 and 40. Note that the calculation in Table 6.3.6.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 60 MHz DL frequency of Band 2 and the whole 10 MHz DL frequency of Band 30. If the BS is only transmitting an up to 20 MHz DL in Band 2 and an up to 10 MHz DL in Band 30 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of Bands 1, 24, 36, 37 and 40 as shown in the last row in Table 6.3.6.1.2.1-1.
It should be noted that Bands 1 and 40 are not intended for use in the same geographical area as Bands 2 and 30. Moreover, co-location of Band (2 + 30) transmitter and Band 36 or 37 transceiver implies FDD/TDD co-location on adjacent frequencies which requires the use of certain site-engineering solutions to avoid mutual interference. Therefore, the focus here will be on the harmonics and IMD falling into Band 24.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 24 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 2 and 30 BS transmitters do not share the same antenna with Band 24 BS receiver.
Therefore, it is recommended that Bands 2 and 30 BS transmitters should not share the same antenna with Band 24 BS receiver to prevent BS receiver desensitization, unless the antenna path meets very stringent 3rd order PIM specification so that the PIM will not cause Band 24 BS receiver desensitization.
6.3.6.1.3 ΔTIB,c and ΔRIB (1 UL)
The transmitter and receiver requirements for CA_2A-30A are based on a front-end reference architecture supporting multiplexing of Band 2, Band 4 and Band 30 (“hexplexer”) that in turn enables support of the band combinations Band 2 + Band 4, Band 2 + Band 30 and Band 4 + Band 30 in the same device. More details can be found in Clause 6.3.2 of [8].
For the UE which supports CA_2A-30A the ΔTIB,c is defined for applicable bands in Table 6.3.6.1.3-1 (see Table 6.3.2.2.1-1 in [8]).
Table 6.3.6.1.3-1: ΔTIB,c
E-UTRA CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_2A-30A
2
[0.5]
30
[0.3]
For the UE which supports CA_2A-30A the ΔRIB,c is defined for applicable bands in Table 6.3.6.1.3-2 (see Table 6.3.2.3.1-1 in [8]) .
Table 6.3.6.1.3-2: ΔRIB,c
E-UTRA CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_2A-30A
2
[0.4]
30
[0.5]
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.7 LTE Advanced Carrier Aggregation of Band 4 and Band 30
|
6.3.7.1 List of specific combination issues
|
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.7.1.1 Channel bandwidths per operating band for CA
| |
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.7.1.2 Co-existence studies for CA_4-30
| |
389f9b67c003a620147a83200e3331ae
|
36.851
|
6.3.7.1.2.1 Co-existence studies for 1 UL/2 DL
|
The 2nd and 3rd order harmonics and IMD products caused in the BS by transmitting of Band 4 and Band 30 DL carriers can be calculated as shown in Table 6.3.7.1.2.1-1 below:
Table 6.3.7.1.2.1-1: Band 4 and Band 30 DL harmonics and IMD products
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
2110
2155
2350
2360
2nd order harmonics frequency range (MHz)
4220
4310
4700
4720
3rd order harmonics frequency range (MHz)
6330
6465
7050
7080
2nd order IMD products
(f2_low – f1_high)
(f2_high – f1_low)
(f2_low + f1_low)
(f2_high + f1_high)
IMD frequency limits (MHz)
195
250
4460
4515
3rd order IMD products
(f2_low – 2*f1_high)
(f2_high – 2*f1_low)
(2*f2_low – f1_high)
(2*f2_high – f1_low)
IMD frequency limits (MHz)
1860
1960
2545
2610
3rd order IMD products
(2*f1_low + f2_low)
(2*f1_high + f2_high)
(2*f2_low + f1_low)
(2*f2_high + f1_high)
IMD frequency limits (MHz)
6570
6670
6810
6875
3rd order IMD products
(f1_low – f2_high + f2_low)
(f1_high + f2_high – f2_low)
(f2_low – f1_high + f1_low)
(f2_high + f1_high – f1_low)
IMD frequency limits (MHz)
2100
2165
2305
2405
3rd order IMD products
(Considering Max BW)
(f1_low – max BW f2)
(f1_high + max BW f2)
(f2_low – max BW f1)
(f2_high + max BW f1)
IMD frequency limits (MHz)
2100
2165
2330
2380
It can be seen from Table 6.3.7.1.2.1-1 that the 2nd and 3rd harmonics as well as the 2nd IMD products of BS transmitting in Bands 4 and 30 will not fall into the BS receive band of any frequency band currently defined in 3GPP, but the 3rd IMD products supporting CA of Band 4 and Band 30 may fall into the BS receive band of Bands 1, 2, 7, 25, 30, 33, 35, 36, 37, 38, 39, 40 and 41. Note that the calculation in Table 6.3.7.1.2.1-1 (except the last row) assumes the BS is transmitting with the whole 45 MHz DL frequency of Band 4 and the whole 10 MHz DL frequency of Band 30. If the BS is only transmitting an up to 20 MHz DL in Band 4 and an up to 10 MHz DL in Band 30 as stated in the WIDS, then the 3rd IMD products may only fall into the BS receive band of Bands 1, 2, 7, 25, 33, 35, 36, 37, 38, 39, 40 and 41 as shown in the last row in Table 6.3.7.1.2.1-1.
It should be noted that Bands 1, 7, 33, 38, 39 and 40 are not intended for use in the same geographical area as Bands 4 and 30. Therefore, the focus here will be on the harmonics and IMD falling into Bands 2, 25, 35, 36, 37 and 41.
With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 2, 25, 35, 36, 37 or 41 receiver would be well below the receiver noise floor eliminating the possibility of receiver desensitization, provided that Bands 4 and 30 BS transmitters do not share the same antenna with Band 2, 25, 35, 36, 37 or 41 receiver.
Therefore, it is recommended that Bands 4 and 30 BS transmitters should not share the same antenna with Band 2, 25, 35, 36, 37 or 41 BS receiver to prevent BS receiver desensitization, unless the antenna path meets very stringent 3rd order PIM specification so that the PIM will not cause Band 2, 25, 35, 36, 37 or 41 BS receiver desensitization.
6.3.7.1.3 ΔTIB,c and ΔRIB (1 UL)
Just as for CA_2A-30A (Clause 6.3.6.1.3), the transmitter and receiver requirements for CA_4A-30A are based on a front-end reference architecture supporting multiplexing of Band 2, Band 4 and Band 30 (“hexplexer”) that in turn enables support of the band combinations Band 2 + Band 4, Band 2 + Band 30 and Band 4 + Band 30 in the same device. More details can be found in Clause 6.3.2 of [8].
For the UE which supports CA_4A-30A the ΔTIB,c is defined for applicable bands in Table 6.3.7.1.3-1 (see Table 6.3.2.2.1-1 in [8]).
Table 6.3.7.1.3-1: ΔTIB,c
E-UTRA CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_4A-30A
4
[0.5]
30
[0.3]
For the UE which supports CA_4A-30A the ΔRIB,c is defined for applicable bands in Table 6.3.7.1.3-2 (see Table 6.3.2.3.1-1 in [8]).
Table 6.3.7.1.3-2: ΔRIB,c
E-UTRA CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_4A-30A
4
[0.4]
30
[0.5]
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6.3.8 LTE-Advanced Carrier Aggregation of Band 41 and Band 42
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Table 6.3.8-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_41-42
41
2496 MHz
–
2690 MHz
10, 15, 20
(note 1)
2496 MHz
–
2690 MHz
10, 15, 20
TDD
42
3400 MHz
–
3600 MHz
10, 15, 20 (note 1)
3400 MHz
–
3600 MHz
10, 15, 20
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.3.8.1 List of specific combination issues
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6.3.8.1.1 Channel bandwidths per operating band for CA
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Table 6.3.8.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
CA operating / channel bandwidth
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
CA_41A-42A
41
Yes
Yes
Yes
42
Yes
Yes
Yes
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6.3.8.1.2 Co-existence studies for 1UL/2DL
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Table 6.3.8.1.2-1 gives the intermodulation products for Band 41 + Band 42 CA with 2 DLs. None of the harmonics of one band fall into the receive band of the other. The intermodulation products generated by two operating bands do not impact the own receiver since TDD BS cannot transmit and receive simultaneously in a single band.
IMD products of Bands 41 and 42 could fall into RX frequency range of some operating bands. However, it could be hard for those low bands less than 1GHz to share the same antenna with Band 41 and Band 42. IMD products could fall into Bands 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 33, 35, 36, 37, 38, 39, 43 and 44, while Bands 1, 3, 5, 8, 9, 11, 18, 19, 21, 27, 28, 39, 43 or 44 could be used in the same geographical area (Region 3) as Bands 41 and 42. With the performances of the current BS antenna system, transmit and receive path components, amplifiers, pre-distortion algorithms and filters, it is expected that the IMD interference generated within the Band 1, 3, 5, 8, 9, 11, 18, 19, 21, 27, 28, 39, 43 or 44 receiver would be well below the receiver noise floor, in order to avoid the possibility of receiver desensitization. Thus it is recommended that Bands 41 and 42 BS transmitters do not share the same antenna with Band 1, 3, 5, 8, 9, 11, 18, 19, 21, 27, 28, 39, 43 or 44 BS receivers, unless the antenna path meets more stringent 3rd order PIM specification so that the PIM will not cause Band 1, 3, 5, 8, 9, 11, 18, 19, 21, 27, 28, 39, 43 or 44 BS receivers desensitization. Note that antenna sharing may be allowed as the state-of-the-art continues to evolve in the future.
Table 6.3.8.1.2-1: 2 DLs B41 + B42 harmonics and IMD products frequency limits
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
2496
2690
3400
3600
2nd order harmonics frequency range (MHz)
4992 to 5380
6800 to 7200
3rd order harmonics frequency range (MHz)
7488 to 8070
10200 to 10800
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
710 to 1104
5896 to 6290
Two-tone 3rd order IMD products
2*f1_low – f2_high
&(2*f1_low + f2_low)
2*f1_high – f2_low
& (2*f1_high + f2_high)
2*f2_low – f1_high
&(2*f2_low + f1_low)
2* f2_high – f1_low
(2*f2_high + f1_high)
IMD frequency range (MHz)
1392 to 1980
8392 to 8980
4110 to 4704
9296 to 9890
Three-tone 3rd order IMD products
f1_low –
max BW f2
f1_high +
max BW f2
f2_low –
max BW f1
f2_high +
max BW f1
IMD frequency range (MHz)
2476 to 2710
3380 to 3620
6.3.8.1.3 ΔTIB and ΔRIB values
For BS not supporting simultaneous Tx/Rx, only Rx will be affected by additional IL introduced by diplexer.
IL values for Band 41+Band 42 diplexer from different vendors are listed in the table below:
Table 6.3.8.1.3-1: IL values for Band 41 + Band 42 diplexer
Band
Vendor 1
Vendor 2
Vendor 3
Tx/Rx IL (dB)
Isolation (dB)
Tx/Rx IL (dB)
Isolation (dB)
Tx/Rx IL (dB)
Isolation (dB)
41
0.87, TYP
1.20, ETC
25, TYP
0.86, TYP
1.20, ETC
24.6, TYP
1.10, ETC
25, TYP
42
0.89, TYP
1.40, ETC
25, TYP
0.70, TYP
1.20, ETC
23.5, TYP
1.00, ETC
25, TYP
The corresponding average additional IL values for Tx and Rx are shown in Table 6.3.8.1.3-2:
Table 6.3.8.1.3-2: Average Tx and Rx IL for combining band 41 and band 42 (under ETC)
Inter-band CA Configuration
E-UTRA Band
Tx IL [dB]
Rx IL [dB]
41
0
1.17
42
0
1.20
For TDD inter-band CA_B41_B42 UE supporting 2DL +1UL without simultaneous Rx/Tx, the TIB,c and RIB,c values are given in Table 6.3.8.1.3-3 and Table 6.3.8.1.3-4.
Table 6.3.8.1.3-3: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_41A-42A
41
0
42
[0.5]
Table 6.3.8.1.3-4: ΔRIB,c
Inter-band CA Configuration
E-UTRA Band
ΔRIB,c [dB]
CA_41A-42A
41
[0.4]
42
[0.5]
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6.3.9 LTE Advanced Carrier Aggregation of Band 5 and Band 13
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CA_5-13 is designed to operate in the operating bands in table 6.3.9-1.
Table 6.3.9.-1: Inter-band CA operating bands
E-UTRA CA Band
E-UTRA Band
Uplink (UL) band
Downlink (DL) band
Duplex
mode
BS receive / UE transmit
Channel BW (MHz)
BS transmit / UE receive
Channel BW (MHz)
FUL_low – FUL_high
FDL_low – FDL_high
CA_5-13
5
824 MHz
–
849 MHz
5, 10
(Note 1)
869 MHz
–
894 MHz
5, 10
FDD
13
777 MHz
–
787 MHz
10
(Note 1)
746 MHz
–
756 MHz
10
NOTE 1: The WI considers only one uplink component carrier to be used in any of the two frequency bands at any time
6.3.9.1 List of specific combination issues
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6.3.9.1.1 Channel bandwidths per operating band for CA
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LTE inter-band carrier aggregation configuration CA_5A-13A shall be operated with E-UTRA channel bandwidths as specified in table 6.3.9.1.1-1
Table 6.3.9.1.1-1: Supported E-UTRA bandwidths per CA configuration for inter-band CA
E-UTRA CA configuration/Bandwidth combination set
E-UTRA CA Configuration
E-UTRA Bands
1.4 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
Maximum aggregated bandwidth [MHz]
Bandwidth combination set
CA_5A-13A
5
Yes
Yes
20
0
13
Yes
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6.3.9.1.2 Co-existence studies for CA_5-13
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Table 6.3.9.1.2-1 shows harmonics frequency limits intermodulation products frequency limits for CA of Band 5 and Band 13.
As shown in table 6.3.9.1.2-1, 2nd harmonics of BS transmitting in Band 5 may fall into the BS receive band of Bands 3, 4, 9 and 10; and the 3rd harmonics of Band 5 could fall into the BS receive band of Band 38, 41.
Table 6.3.9.1.2-1: DL intermodulation products frequency limits for CA of Band 5 and Band 13
BS DL carriers
f1_low
f1_high
f2_low
f2_high
DL frequency (MHz)
869
894
746
756
2nd order harmonics frequency range (MHz)
1738 to 1788
1492 to 1512
3rd order harmonics frequency range (MHz)
2607 to 2682
2238 to 2268
Two-tone 2nd order IMD products
f2_low – f1_high
f2_high – f1_low
f2_low + f1_low
f2_high + f1_high
IMD frequency range (MHz)
113 to 148
1615 to 1650
Two-tone 3rd order IMD products
2*f1_low – f2_high
&
(2*f1_low + f2_low)
2*f1_high – f2_low
&
(2*f1_high + f2_high)
2*f2_low – f1_high
&
(2*f2_low + f1_low)
2* f2_high – f1_low
&
(2*f2_high + f1_high)
IMD frequency range (MHz)
982 to 1042
2484 to 2544
598 to 643
2361 to 2406
Three-tone 3rd order IMD products
(f1_low –
max BW f2)
(f1_high +
max BW f2)
(f2_low –
max BW f1)
(f2_high +
max BW f1)
IMD frequency range (MHz)
859 to 904
736 to 766
It also can be seen that 2nd order intermodulation products may fall into BS receive band of Band 24. 3rd intermodulation products may fall to UL frequencies of Bands 7, 8, 20, 28, 40, 41 and 44.
It should be noted that Band 5 and Band 13 are not meant to be deployed together in the same geographic area as Bands 3, 8, 9, 20, 28, 38, 40 and 44. Therefore the focus here will be on the harmonics of Band 5 falling into Bands 4, 10 and 41, and IMD products falling into Band 7, 24 and 41.
It is recommended that Band 5 and Band 13 BS transmitters not share an antenna with Band 4, 7, 10, 24 or 41 BS receivers. However Band 4, 7, 10, 24 and 41 would use separate antennas from Band 5 and Band 13, due to that high/low bands use separate antennas at BS side. There is no need to address above issue in inter-band carrier aggregation context.
6.3.9.1.3 ΔTIB,c and ΔRIB (1 UL)
For the UE which supports CA_5A-13A the ΔTIB,c is defined for applicable bands in table 6.3.9.1.3-1.
Table 6.3.9.1.3-1: ΔTIB,c
Inter-band CA Configuration
E-UTRA Band
ΔTIB,c [dB]
CA_5A-13A
5
0.5
13
0.5
For the UE which supports CA_5A-13A the ΔRIB is defined for applicable bands in table 6.3.9.1.3-2.
Table 6.3.9.1.3-2: ΔRIB
Inter-band CA Configuration
E-UTRA Band
ΔRIB [dB]
CA_5A-13A
5
0
13
0
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