EARFCN

1. EARFCN:    

缩写:          E-UTRA Absolute Radio Frequency Channel Number, 

取值范围: 0 – 65535

EARFCN:LTE的载波频点号,FDD的EARFCN从0~35999, TDD的EARFCN从36000~65531。
计算公式:37750+(使用频率-2570)/0.1

 

TD-LTE的频点编号从36000开始,F_c代表载波中心频率(MHz),F_low代表频带内的起始频率,N_Offs代表上频带内的起始频点。

F_c=F_low + 0.1*(N_Earfcn – N_Offs)
例:假如某小区freq_info: 38700 则对应的F_c=2300 +0.1*(38700-38650)=2305MHz,然后通过MIB获取小区bandwidth

 

LTE主要分三个频段:D(室外)、E(室内)、F(室外)
E频段:Freq=2300+0.1*(EARFCN-38650);
D频段:Freq=2570+0.1*(EARFCN-37750);
F频段:Freq=1800+0.1*(EARFCN-38250);
其中Freq(MHZ)代表载波中心频率;
2300、2570、1880代表各频段内的中心起始频率,38650、37750、38250代表各频段内的起始EARFCN(频点)

目前国内使用的38频段,EARFCN的起始值为37750,频率的起始值为2.57GHz,每100kHz对应一个频点号。比如2.6GHz,对应的EARFCN就是37750+300=38050。

Table 5.7.3-1: E-UTRA channel numbers

 

E-UTRA Operating Band

Downlink

Uplink

FDL_low [MHz]

NOffs-DL

Range of NDL

FUL_low [MHz]

NOffs-UL

Range of NUL

1

2110

0

0 – 599

1920

18000

18000 – 18599

2

1930

600

600 - 1199

1850

18600

18600 – 19199

3

1805

1200

1200 – 1949

1710

19200

19200 – 19949

4

2110

1950

1950 – 2399

1710

19950

19950 – 20399

5

869

2400

2400 – 2649

824

20400

20400 – 20649

6

875

2650

2650 – 2749

830

20650

20650 – 20749

7

2620

2750

2750 – 3449

2500

20750

20750 – 21449

8

925

3450

3450 – 3799

880

21450

21450 – 21799

9

1844.9

3800

3800 – 4149

1749.9

21800

21800 – 22149

10

2110

4150

4150 – 4749

1710

22150

22150 – 22749

11

1475.9

4750

4750 – 4949

1427.9

22750

22750 – 22949

12

729

5010

5010 – 5179

699

23010

23010 – 23179

13

746

5180

5180 – 5279

777

23180

23180 – 23279

14

758

5280

5280 – 5379

788

23280

23280 – 23379

 

 

 

 

 

 

17

734

5730

5730 – 5849

704

23730

23730 – 23849

18

860

5850

5850 – 5999

815

23850

23850 – 23999

19

875

6000

6000 – 6149

830

24000

24000 – 24149

20

791

6150

6150 - 6449

832

24150

24150 - 24449

21

1495.9

6450

6450 – 6599

1447.9

24450

24450 – 24599

22

3510

6600

6600-7399

3410

24600

24600-25399

23

2180

7500

7500 – 7699

2000

25500

25500 – 25699

24

1525

7700

7700 – 8039

1626.5

25700

25700 – 26039

25

1930

8040

8040 - 8689

1850

26040

26040 - 26689

26

859

8690

8690 – 9039

814

26690

26690 - 27039

27

852

9040

9040 – 9209

807

27040

27040 – 27209

28

758

9210

9210 – 9659

703

27210

27210 – 27659

 

 

 

 

 

 

33

1900

36000

36000 – 36199

1900

36000

36000 – 36199

34

2010

36200

36200 – 36349

2010

36200

36200 – 36349

35

1850

36350

36350 – 36949

1850

36350

36350 – 36949

36

1930

36950

36950 – 37549

1930

36950

36950 – 37549

37

1910

37550

37550 – 37749

1910

37550

37550 – 37749

38

2570

37750

37750 – 38249

2570

37750

37750 – 38249

39

1880

38250

38250 – 38649

1880

38250

38250 – 38649

40

2300

38650

38650 – 39649

2300

38650

38650 – 39649

41

2496

39650

39650 – 41589

2496

39650

39650 – 41589

42

3400

41590

41590 – 43589

3400

41590

41590 – 43589

43

3600

43590

43590 – 45589

3600

43590

43590 – 45589

44

703

45590

45590 – 46589

703

45590

45590 – 46589

NOTE:      The channel numbers that designate carrier frequencies so close to the operating band edges that the carrier extends beyond the operating band edge shall not be used. This implies that the first 7, 15, 25, 50, 75 and 100 channel numbers at the lower operating band edge and the last 6, 14, 24, 49, 74 and 99 channel numbers at the upper operating band edge shall not be used for channel bandwidths of 1.4, 3, 5, 10, 15 and 20 MHz respective

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