LTE support two duplexing modes:
- TD-LTE : Time Divison Duplexing LTE.
- Both downlink and uplink transmission takes place at the same carrier frequency, unpaired spectrum, at different time slots.
- The UL and DL slots are isolated through gaurd period. One merit TD-LTE is UL and DL capacity can be changed dynamicallcay.
- No diplexer is required for TD-LTE, so cheaper UEs.
- FDD-LTE : Frequency Divisin Duplexing.
- In FDD operation two carrier frequencies are required, paired spectrum. One for uplink transmission(
) and other for downlink transmission (
). - UL and DL isolation through gaurd bands.
- In FDD operation two carrier frequencies are required, paired spectrum. One for uplink transmission(
The following LTE frequency band table is based on ETSI TS 136 101 V12.5.0(2014-11). The LTE/E-UTRA bands 1-32 are allocated to FDD-LTE and bands 33-44 are for TD-LTE bands. The initial choice TD-LTE is driven purely by spectrum availability.
| E-UTRA Band | Name / Freq Band (MHz) | Downlink (MHz) | Uplink (MHz) | BW | Duplex Mode | Duplex | Geo | ||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2100 | 2110 | 2170 | 1920 | 1980 | 60 | FDD | 190 | All |
| 2 | PCS-1900 | 1930 | 1990 | 1850 | 1910 | 60 | FDD | 80 | NAR |
| 3 | DCS-1800 | 1805 | 1880 | 1710 | 1785 | 75 | FDD | 95 | All |
| 4 | AWS 1 | 2110 | 2155 | 1710 | 1755 | 45 | FDD | 400 | NAR |
| 5 | GSM-850 | 869 | 894 | 824 | 849 | 25 | FDD | 45 | NAR |
| 6 | UMTS only | 875 | 885 | 830 | 840 | 10 | FDD | 45 | APAC |
| 7 | 2600 | 2620 | 2690 | 2500 | 2570 | 70 | FDD | 120 | EMEA |
| 8 | E-GSM-900 | 925 | 960 | 880 | 915 | 35 | FDD | 45 | All |
| 9 | 1800 | 1844.9 | 1879.9 | 1749.9 | 1784.9 | 35 | FDD | 95 | APAC |
| 10 | AWS 1+3 | 2110 | 2170 | 1710 | 1770 | 60 | FDD | 400 | NAR |
| 11 | 1500 Lower | 1475.9 | 1495.9 | 1427.9 | 1447.9 | 20 | FDD | 48 | Japan |
| 12 | 700 ac | 729 | 746 | 699 | 716 | 17 | FDD | 30 | NAR |
| 13 | 700 c | 746 | 756 | 777 | 787 | 10 | FDD | -31 | NAR |
| 14 | 700 PS | 758 | 768 | 788 | 798 | 10 | FDD | -30 | NAR |
| 15 | Reserved | Reserved | Reserved | Reserved | FDD | ||||
| 16 | Reserved | Reserved | Reserved | Reserved | FDD | ||||
| 17 | 700 bc | 734 | 746 | 704 | 716 | 12 | FDD | 30 | NAR |
| 18 | 800 Lower | 860 | 875 | 815 | 830 | 15 | FDD | 45 | Japan |
| 19 | 800 Upper | 875 | 890 | 830 | 845 | 15 | FDD | 45 | Japan |
| 20 | 800 DD | 791 | 821 | 832 | 862 | 30 | FDD | -41 | EMEA |
| 21 | 1500 Upper | 1495.9 | 1510.9 | 1447.9 | 1462.9 | 15 | FDD | 48 | Japan |
| 22 | 3500 | 3510 | 3590 | 3410 | 3490 | 80 | FDD | 100 | |
| 23 | 2000 S-band | 2180 | 2200 | 2000 | 2020 | 20 | FDD | 180 | NAR |
| 24 | 1600 L-band | 1525 | 1559 | 1626.5 | 1660.5 | 34 | FDD | -101.5 | NAR |
| 25 | 1900 + | 1930 | 1995 | 1850 | 1915 | 65 | FDD | 80 | NAR |
| 26 | 850 + | 859 | 894 | 814 | 849 | 35 | FDD | 45 | NAR |
| 27 | 800 SMR | 852 | 869 | 807 | 824 | 17 | FDD | 45 | NAR |
| 28 | 700 APT | 758 | 803 | 703 | 748 | 45 | FDD | 55 | APAC |
| 29 | 700 de | 717 | 728 | No uplink | No uplink | 11 | FDD | NAR | |
| 30 | 2300 WCS | 2350 | 2360 | 2305 | 2315 | 10 | FDD | 45 | NAR |
| 31 | 450 | 462.5 | 467.5 | 452.5 | 457.5 | 5 | FDD | 10 | CALA |
| 32 | 1500 L-band | 1452 | 1496 | No uplink | No uplink | 44 | FDD | EMEA | |
| 33 | TD 1900 | 1900 | 1920 | 20 | TDD | ||||
| 34 | TD 2000 | 2010 | 2025 | 15 | TDD | EMEA | |||
| 35 | TD PCS Lower | 1850 | 1910 | 60 | TDD | NAR | |||
| 36 | TD PCS Upper | 1930 | 1990 | 60 | TDD | NAR | |||
| 37 | TD PCS Center | 1910 | 1930 | 20 | TDD | NAR | |||
| 38 | TD 2600 | 2570 | 2620 | 50 | TDD | EMEA | |||
| 39 | TD 1900 + | 1880 | 1920 | 40 | TDD | China | |||
| 40 | TD 2300 | 2300 | 2400 | 100 | TDD | China | |||
| 41 | TD 2500 | 2496 | 2690 | 194 | TDD | All | |||
| 42 | TD 3500 | 3400 | 3600 | 200 | TDD | ||||
| 43 | TD 3700 | 3600 | 3800 | 200 | TDD | ||||
| 44 | TD 700 | 703 | 803 | 100 | TDD | APAC |