4G频带
LTE已开发用于在频划分双面的配对频谱上操作 (软驱), 和不成对的频谱用于时期双工 (测试驱动开发).
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., 软驱), or time periods (i.e., 测试驱动开发).
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. 然而, transmission timing must be synchronised between base stations, introducing complexity, 以及DL和UL子帧之间需要的警卫期, 这降低了容量.
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FDD LTE频带
The continuing evolution of carrier aggregation has resulted in several new bands added, 包括B29, B32, B67, and B69 used for downlink-only carrier aggregation, termed Supplemental DL bands[5]. Supplemental DL bands 252 和 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 (兆赫) | Downlink (兆赫) | UL EARFCN | DL earfcn | 频道带宽 (兆赫) |
|---|---|---|---|---|---|---|
| B1 (2100 兆赫) | IMT核心乐队 | 1920 – 1980 | 2110 – 2170 | 18000 – 18599 | 0 – 599 | 0.2, 5, 10, 15, 20 |
| B2 (1900 兆赫) | 件 1900 | 1850 – 1910 | 1930 – 1990 | 18600 – 19199 | 600 – 1199 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B3 (1800 兆赫) | 1800 | 1710 – 1785 | 1805 – 1880 | 19200 – 19949 | 1200 – 1949 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B4 (1700 兆赫) | AWS 1700 | 1710 – 1755 | 2110 – 2155 | 19950 – 20399 | 1950 – 2399 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B5 (850 兆赫) | 850 | 824 – 849 | 869 – 894 | 20400 – 20649 | 2400 – 2649 | 0.2, 1.4, 3, 5, 10 |
| B7 (2600 兆赫) | IMT扩展 | 2500 – 2570 | 2620 – 2690 | 20750 – 21449 | 2750 – 3449 | 0.2, 5, 10, 15, 20 |
| B8 (900 兆赫) | 900 | 880 – 915 | 925 – 960 | 21450 – 21799 | 3450 – 3799 | 0.2, 1.4, 3, 5, 10 |
| B9 (1800 兆赫) | 1700 (日本 #2) | 1749.9 – 1784.9 | 1844.9 – 1879.9 | 21800 – 22149 | 3800 – 4149 | 5, 10, 15, 20 |
| B10 (1700 兆赫) | 3G Americas扩展了AWS A-i | 1710 – 1770 | 2110 – 2170 | 22150 – 22749 | 4150 – 4749 | 5, 10, 15, 20 |
| B11 (1500 兆赫) | 1500 (日本 #3) | 1427.9 – 1452.9 | 1475.9 – 1500.9 | 22750 – 22949 | 4750 – 4949 | 5, 10 |
| B12 (700 兆赫) | 我们 700 较低a, 乙, C | 698 – 716 | 728 – 746 | 23010 – 23179 | 5010 – 5179 | 0.2, 1.4, 3, 5 |
| B13 (700 兆赫) | 我们 700 上c | 777 – 787 | 746 – 756 | 23180 – 23279 | 5180 – 5279 | 0.2, 5, 10 |
| B14 (700 兆赫) | 我们 700 上d | 788 – 798 | 758 – 768 | 23280 – 23379 | 5280 – 5379 | 5, 10 |
| B17 (700 兆赫) | 我们 700 下b, C | 704 – 716 | 734 – 746 | 23730 – 23849 | 5730 – 5849 | 5, 10 |
| B18 (850 兆赫) | 850 (日本 #4) | 815 – 830 | 860 – 875 | 23850 – 23999 | 5850 – 5999 | 0.2, 5, 10, 15 |
| B19 (850 兆赫) | 850 (日本 #5) | 830 – 845 | 875 – 890 | 24000 – 24149 | 6000 – 6149 | 0.2, 5, 10, 15 |
| B20 (800 兆赫) | cept 800 | 832 – 862 | 791 – 821 | 24150 – 24449 | 6150 – 6449 | 0.2, 5, 10, 15, 20 |
| B21 (1500 兆赫) | 1500 (日本 #6) | 1447.9 – 1462.9 | 1495.5 – 1510.9 | 24450 – 24599 | 6450 – 6599 | 0.2, 5, 10, 15 |
| B22 (3500 兆赫) | 软驱 3500 | 3410 – 3500 | 3510 – 3600 | 24600 – 25399 | 6600 – 7399 | 5, 10, 15, 20 |
| B24 (1600 兆赫) | 美国L波段 | 1625.5 – 1660.5 | 1525 – 1559 | 25700 – 26039 | 7700 – 8039 | 5, 10 |
| B25 (1900 兆赫) | 件 1900 G | 1850 – 1915 | 1930 – 1995 | 26040 – 26689 | 8040 – 8689 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B26 (850 兆赫) | E850上升器 | 814 – 849 | 859 – 894 | 26690 – 27039 | 8690 – 9039 | 0.2, 1.4, 3, 5, 10, 15 |
| B27 (850 兆赫) | E850 Lower LTE | 807 – 824 | 852 – 869 | 27040 – 27209 | 9040 – 9209 | 1.4, 3, 5 |
| B28 (700 兆赫) | 易于 700 | 703 – 748 | 758 – 803 | 27210 – 27659 | 9210 – 9659 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B30 (2300 兆赫) | LTE WCS | 2305 – 2315 | 2350 – 2360 | 27660 – 27710 | 9770 – 9869 | 5, 10 |
| B31 (450 兆赫) | 长期演进 450 巴西 | 452.5 – 457.5 | 462.5 – 467.5 | 27760 – 27785 | 9870 – 9919 | 0.2, 1.4, 3, 5 |
| B65 (2100 兆赫) | 2 GHz LTE | 1920 – 2010 | 2110 – 2200 | 131072 – 131971 | 65536 – 66435 | 1.4, 3, 5, 10, 15, 20 |
| B66 (1700 兆赫) | AWS扩展 | 1710 – 1780 | 2110 – 2200 | 131972 – 132671 | 66436 – 67335 | 1.4, 3, 5, 10, 15, 20 |
| B68 (700 兆赫) | 长期演进 700 阿拉伯地区 | 698 – 728 | 753 – 783 | 132672 – 132971 | 67536 – 67835 | 5, 10, 15 |
| B70 (1700 兆赫) | AWS-3/4 | 1695 – 1710 | 1995 – 2020 | 132972 – 133121 | 68336 – 68585 | 5, 10, 15, 20 |
| B71 (600 兆赫) | 我们 600 | 663 – 698 | 617 – 652 | 133122 – 133471 | 68586 – 68935 | 0.2, 5, 10, 15, 20 |
| B72 (450 兆赫) | 450 我bb-ppdr | 451 – 456 | 461 – 466 | 133472 – 133521 | 68936 – 68985 | 0.2, 1.4, 3, 5 |
| B73 (450 兆赫) | 450 LTE Apac | 450 – 455 | 460 – 465 | 133522 – 133571 | 68986 – 69035 | 0.2, 1.4, 3, 5 |
| B74 (1500 兆赫) | FDD L波段 | 1427 – 1470 | 1475 – 1518 | 133572 – 134001 | 69036 – 69465 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B85 (700 兆赫) | 700 A+ | 698 – 716 | 728 – 746 | 134002 – 134181 | 70366 – 70545 | 5, 10 |
| B87 (450 兆赫) | 欧盟的PPDR PMR/PMAR | 410 – 415 | 420 – 425 | 134182 – 134231 | 70546 – 70595 | 0.2, 1.4, 3, 5 |
| B88 (450 兆赫) | 欧盟的PPDR PMR/PMAR | 412 – 417 | 422 – 427 | 134231 – 134280 | 70596 – 70645 | 0.2, 1.4, 3, 5 |
| B103 (700 兆赫) | nb-iot 700 | 787 – 788 | 757 – 758 | 134282 – 134291 | 70646 – 70655 | 0.2 |
| B106 (900 兆赫) | 900 软驱 | 896 – 901 | 935 – 940 | 134292 – 134341 | 70656 – 70705 | 1.4, 3 |
TDD LTE频带
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.
乐队 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 时部复式和补充下行链路LTE频段, compiled from 3GPP 36.101 (Rel. 17.1) [June 2023]
| E-UTRA Band | Identifier | 频率 (兆赫) | earfcn | 频道带宽 (兆赫) |
|---|---|---|---|---|
| B33 (2100 兆赫) | 测试驱动开发 2000 降低 | 1900 – 1920 | 36000 – 36199 | 5, 10, 15, 20 |
| B34 (2100 兆赫) | 测试驱动开发 2000 上 | 2010 – 2025 | 36200 – 36349 | 5, 10, 15 |
| B35 (1900 兆赫) | 1900 | 1850 – 1910 | 36350 – 36949 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B36 (1900 兆赫) | 测试驱动开发 1900 | 1930 – 1990 | 36950 – 37549 | 0.2, 1.4, 3, 5, 10, 15, 20 |
| B37 (1900 兆赫) | PCS中心间隙 | 1910 – 1930 | 37550 – 37749 | 5, 10, 15, 20 |
| B38 (2600 兆赫) | IMT扩展差距 | 2570 – 2620 | 37750 – 38249 | 5, 10, 15, 20 |
| B39 (1900 兆赫) | 中国TDD 1900 | 1880 – 1920 | 38250 – 38649 | 5, 10, 15, 20 |
| B40 (2300 兆赫) | 测试驱动开发 2300 | 2300 – 2400 | 38650 – 39649 | 5, 10, 15, 20 |
| B41 (2500 兆赫) | 测试驱动开发 2500 | 2496 – 2690 | 39650 – 41589 | 5, 10, 15, 20 |
| B42 (3500 兆赫) | 测试驱动开发 3500 | 3400 – 3600 | 41590 – 43589 | 5, 10, 15, 20 |
| B43 (3700 兆赫) | 测试驱动开发 3700 | 3600 – 3800 | 43590 – 45589 | 5, 10, 15, 20 |
| B44 (700 兆赫) | 易于 700 测试驱动开发 | 703 – 803 | 45590 – 46589 | 3, 5, 10, 15, 20 |
| B45 (1500 兆赫) | 中国TDD 1400 | 1447 – 1467 | 46590 – 46789 | 5, 10, 15, 20 |
| B46 (5200 兆赫) | LAA 5200 | 5150 – 5925 | 46790 – 54539 | 10, 20 |
| B47 (5800 兆赫) | V2X 5800 | 5855 – 5925 | 54540 – 55239 | 10, 20 |
| B48 (3600 兆赫) | 美国CBR 3500 | 3550 – 3700 | 55240 – 56739 | 5, 10, 15, 20 |
| B50 (1500 兆赫) | TD 1500+ | 1432 – 1517 | 58240 – 59089 | 3, 5, 10, 15, 20 |
| B51 (1500 兆赫) | TD 1500- | 1427 – 1432 | 59090 – 59139 | 5 |
| B53 (2400 兆赫) | wifi上的TDD LTE | 2483.5 – 2495 | 60140 – 60254 | 1.4, 3, 5, 10 |
| B54 (1600 兆赫) | TD 1700 | 1670 – 1675 | 60255 – 60304 | 5 |
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