4G Frequency Bands
LTE has been developed to operate on paired spectrum for Frequency Division Duplex (FDD), and unpaired spectrum for Time Division Duplex (TDD).
For an LTE radio system to facilitate bidirectional communication, it is necessary to implement a duplex scheme so that a device may transmit and receive without collision. In order to achieve high data rates, LTE operates full duplex whereby both downlink (DL) and uplink (UL) communication takes place simultaneously by separating DL and UL traffic either by frequency (i.e., FDD), or time periods (i.e., TDD).
While less efficient and more electrically complex to deploy, FDD tends to be more commonly deployed by operators due to refarming of existing 3G spectrum arrangements. By comparison, deploying TDD requires less spectrum as well as eliminating then need for guard bands permitting a more efficient stacking of spectrum. UL/DL capacity can also be dynamically adjusted to match demand simply by devoting more airtime to one over the other. Jedoch, transmission timing must be synchronised between base stations, introducing complexity, along with guard periods being required between DL and UL subframes, which reduces capacity.
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FDD LTE Frequency Bands
The continuing evolution of carrier aggregation has resulted in several new bands added, including B29, B32, B67, and B69 used for downlink-only carrier aggregation, termed Supplemental DL bands[5]. Supplemental DL bands 252 und 255 have been included as part of the LTE-U expansion into unlicensed 5 GHz bands U-NII-1 and U-NII-3, respectively.
Release 16.0 in April 2019 saw the introduction of European 450 MHz LTE bands for the purposes of emergency services use during disaster relief.
The below table lists the 39 Frequency Division Duplex and Supplemental Downlink LTE bands, compiled from 3GPP 36.101 (Rel. 17.1) [June 2023]
| E-UTRA Band | Identifier | Uplink (FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | Downlink (FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | UL EARFCN | DL EARFCN | Channel Bandwidths (FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) |
|---|---|---|---|---|---|---|
| B1 (2100 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | IMT Core Band | 1920 – 1980 | 2110 – 2170 | 18000 – 18599 | 0 – 599 | 0.2, 5, 10, 15, 20 |
| B2 (1900 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | PCS 1900 | 1850 – 1910 | 1930 – 1990 | 18600 – 19199 | 600 – 1199 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B3 (1800 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 1800 | 1710 – 1785 | 1805 – 1880 | 19200 – 19949 | 1200 – 1949 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B4 (1700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | AWS 1700 | 1710 – 1755 | 2110 – 2155 | 19950 – 20399 | 1950 – 2399 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B5 (850 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 850 | 824 – 849 | 869 – 894 | 20400 – 20649 | 2400 – 2649 | 0.2, 1.4, 3, 5, 10 |
| B7 (2600 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | IMT Extension | 2500 – 2570 | 2620 – 2690 | 20750 – 21449 | 2750 – 3449 | 0.2, 5, 10, 15, 20 |
| B8 (900 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 900 | 880 – 915 | 925 – 960 | 21450 – 21799 | 3450 – 3799 | 0.2, 1.4, 3, 5, 10 |
| B9 (1800 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 1700 (Japan #2) | 1749.9 – 1784.9 | 1844.9 – 1879.9 | 21800 – 22149 | 3800 – 4149 | 5, 10, 15, 20 |
| B10 (1700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 3G Americas Extended AWS blocks A-I | 1710 – 1770 | 2110 – 2170 | 22150 – 22749 | 4150 – 4749 | 5, 10, 15, 20 |
| B11 (1500 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 1500 (Japan #3) | 1427.9 – 1452.9 | 1475.9 – 1500.9 | 22750 – 22949 | 4750 – 4949 | 5, 10 |
| B12 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | US 700 Lower A, B, C | 698 – 716 | 728 – 746 | 23010 – 23179 | 5010 – 5179 | 0.2, 1.4, 3, 5 |
| B13 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | US 700 Upper C | 777 – 787 | 746 – 756 | 23180 – 23279 | 5180 – 5279 | 0.2, 5, 10 |
| B14 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | US 700 Upper D | 788 – 798 | 758 – 768 | 23280 – 23379 | 5280 – 5379 | 5, 10 |
| B17 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | US 700 Lower B, C | 704 – 716 | 734 – 746 | 23730 – 23849 | 5730 – 5849 | 5, 10 |
| B18 (850 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 850 (Japan #4) | 815 – 830 | 860 – 875 | 23850 – 23999 | 5850 – 5999 | 0.2, 5, 10, 15 |
| B19 (850 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 850 (Japan #5) | 830 – 845 | 875 – 890 | 24000 – 24149 | 6000 – 6149 | 0.2, 5, 10, 15 |
| B20 (800 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | CEPT 800 | 832 – 862 | 791 – 821 | 24150 – 24449 | 6150 – 6449 | 0.2, 5, 10, 15, 20 |
| B21 (1500 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 1500 (Japan #6) | 1447.9 – 1462.9 | 1495.5 – 1510.9 | 24450 – 24599 | 6450 – 6599 | 0.2, 5, 10, 15 |
| B22 (3500 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | FDD 3500 | 3410 – 3500 | 3510 – 3600 | 24600 – 25399 | 6600 – 7399 | 5, 10, 15, 20 |
| B24 (1600 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | US L-Band | 1625.5 – 1660.5 | 1525 – 1559 | 25700 – 26039 | 7700 – 8039 | 5, 10 |
| B25 (1900 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | PCS 1900 g | 1850 – 1915 | 1930 – 1995 | 26040 – 26689 | 8040 – 8689 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B26 (850 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | E850 Upper | 814 – 849 | 859 – 894 | 26690 – 27039 | 8690 – 9039 | 0.2, 1.4, 3, 5, 10, 15 |
| B27 (850 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | E850 Lower LTE | 807 – 824 | 852 – 869 | 27040 – 27209 | 9040 – 9209 | 1.4, 3, 5 |
| B28 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | APT 700 | 703 – 748 | 758 – 803 | 27210 – 27659 | 9210 – 9659 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B30 (2300 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | LTE WCS | 2305 – 2315 | 2350 – 2360 | 27660 – 27710 | 9770 – 9869 | 5, 10 |
| B31 (450 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | LTE 450 Brasilien | 452.5 – 457.5 | 462.5 – 467.5 | 27760 – 27785 | 9870 – 9919 | 0.2, 1.4, 3, 5 |
| B65 (2100 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 2 GHz LTE | 1920 – 2010 | 2110 – 2200 | 131072 – 131971 | 65536 – 66435 | 1.4, 3, 5, 10, 15, 20 |
| B66 (1700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | AWS Extension | 1710 – 1780 | 2110 – 2200 | 131972 – 132671 | 66436 – 67335 | 1.4, 3, 5, 10, 15, 20 |
| B68 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | LTE 700 Arab Region | 698 – 728 | 753 – 783 | 132672 – 132971 | 67536 – 67835 | 5, 10, 15 |
| B70 (1700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | AWS-3/4 | 1695 – 1710 | 1995 – 2020 | 132972 – 133121 | 68336 – 68585 | 5, 10, 15, 20 |
| B71 (600 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | US 600 | 663 – 698 | 617 – 652 | 133122 – 133471 | 68586 – 68935 | 0.2, 5, 10, 15, 20 |
| B72 (450 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 450 EU BB-PPDR | 451 – 456 | 461 – 466 | 133472 – 133521 | 68936 – 68985 | 0.2, 1.4, 3, 5 |
| B73 (450 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 450 LTE APAC | 450 – 455 | 460 – 465 | 133522 – 133571 | 68986 – 69035 | 0.2, 1.4, 3, 5 |
| B74 (1500 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | FDD L-band | 1427 – 1470 | 1475 – 1518 | 133572 – 134001 | 69036 – 69465 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B85 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 700 a+ | 698 – 716 | 728 – 746 | 134002 – 134181 | 70366 – 70545 | 5, 10 |
| B87 (450 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | PPDR PMR/PMAR in EU | 410 – 415 | 420 – 425 | 134182 – 134231 | 70546 – 70595 | 0.2, 1.4, 3, 5 |
| B88 (450 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | PPDR PMR/PMAR in EU | 412 – 417 | 422 – 427 | 134231 – 134280 | 70596 – 70645 | 0.2, 1.4, 3, 5 |
| B103 (700 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | NB-IoT 700 | 787 – 788 | 757 – 758 | 134282 – 134291 | 70646 – 70655 | 0.2 |
| B106 (900 FWP Desktop GSM Festnetztelefon mit Hotline-Wahl) | 900 FDD | 896 – 901 | 935 – 940 | 134292 – 134341 | 70656 – 70705 | 1.4, 3 |
TDD LTE Frequency Bands
The increasing asymmetric demand for downlink data has also resulted in the introduction of Band 46, a downlink-only Supplemental DL band operating in the 5 GHz U-NII frequency range.
Band 47 has been introduced for applications such as Vehicle to Everything (V2X) communications, which is positioned in the U-NII-3 5 GHz unlicensed band. Cellular V2X (C-V2X) may require the use of unlicensed bands to solve regulatory issues related to LTE-Direct, where devices broadcast directly to nearby devices[6]. Like all unlicensed band LTE technologies, V2X operates Band 47 only in carrier aggregation with the operator’s licensed band.
The below table lists the 20 Time Division Duplex and Supplemental Downlink LTE bands, compiled from 3GPP 36.101 (Rel. 17.1) [June 2023]
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