一直以来频点、频率之间的换算都是个麻烦和疑惑人的问题,很多时候都是死记硬背的记下来,但是到了NR基本都不是整数的频率,所以就更加麻烦,再次我做一个协议的简单解读和excel公式的简单介绍。
根据R16版本的38.104协议,咱们可以得到如下内容。
把0-100000MHz分成三段如下
Table 5.4.2.1-1: NR-ARFCN parameters for the global frequency raster
Frequency range (MHz) |
ΔFGlobal (kHz) |
FREF-Offs (MHz) |
NREF-Offs |
Range of NREF |
0 – 3000 |
5 |
0 |
0 |
0 – 599999 |
3000 – 24250 |
15 |
3000 |
600000 |
600000 – 2016666 |
24250 – 100000 |
60 |
24250.08 |
2016667 |
2016667 – 3279165 |
其中FR1和FR2中每个频段的范围和频点间隔步进如下图所示
Table 5.4.2.3-1: Applicable NR-ARFCN per operating band in FR1
NR Operating band |
ΔFRaster (kHz) |
Uplink Range of NREF (First – <Step size> – Last) |
Downlink Range of NREF (First – <Step size> – Last) |
n1 |
100 |
384000 – <20> – 396000 |
422000 – <20> – 434000 |
n2 |
100 |
370000 – <20> – 382000 |
386000 – <20> – 398000 |
n3 |
100 |
342000 – <20> – 357000 |
361000 – <20> – 376000 |
n5 |
100 |
164800 – <20> – 169800 |
173800 – <20> – 178800 |
n7 |
100 |
500000 – <20> – 514000 |
524000 – <20> – 538000 |
n8 |
100 |
176000 – <20> – 183000 |
185000 – <20> – 192000 |
n12 |
100 |
139800 – <20> – 143200 |
145800 – <20> – 149200 |
n14 |
100 |
157600 – <20> –159600 |
151600 – <20> – 153600 |
n18 |
100 |
163000 – <20> – 166000 |
172000 – <20> – 175000 |
n20 |
100 |
166400 – <20> – 172400 |
158200 – <20> – 164200 |
n25 |
100 |
370000 – <20> – 383000 |
386000 – <20> – 399000 |
n28 |
100 |
140600 – <20> – 149600 |
151600 – <20> – 160600 |
n30 |
100 |
461000 – <20> – 463000 |
470000 – <20> – 472000 |
n34 |
100 |
402000 – <20> – 405000 |
402000 – <20> – 405000 |
n38 |
100 |
514000 – <20> – 524000 |
514000 – <20> – 524000 |
n39 |
100 |
376000 – <20> – 384000 |
376000 – <20> – 384000 |
n40 |
100 |
460000 – <20> – 480000 |
460000 – <20> – 480000 |
n41 |
15 |
499200 – <3> – 537999 |
499200 – <3> – 537999 |
30 |
499200 – <6> – 537996 |
499200 – <6> – 537996 |
|
n48 |
15 |
636667 – <1> – 646666 |
636667 – <1> – 646666 |
30 |
636668 – <2> – 646666 |
636668 – <2> – 646666 |
|
n50 |
100 |
286400 – <20> – 303400 |
286400 – <20> – 303400 |
n51 |
100 |
285400 – <20> – 286400 |
285400 – <20> – 286400 |
n65 |
100 |
384000 – <20> – 402000 |
422000 – <20> – 440000 |
n66 |
100 |
342000 – <20> – 356000 |
422000 – <20> – 440000 |
n70 |
100 |
339000 – <20> – 342000 |
399000 – <20> – 404000 |
n71 |
100 |
132600 – <20> – 139600 |
123400 – <20> – 130400 |
n74 |
100 |
285400 – <20> – 294000 |
295000 – <20> – 303600 |
n75 |
100 |
N/A |
286400 – <20> – 303400 |
n76 |
100 |
N/A |
285400 – <20> – 286400 |
n77 |
15 |
620000 – <1> – 680000 |
620000 – <1> – 680000 |
30 |
620000 – <2> – 680000 |
620000 – <2> – 680000 |
|
n78 |
15 |
620000 – <1> – 653333 |
620000 – <1> – 653333 |
30 |
620000 – <2> – 653332 |
620000 – <2> – 653332 |
|
n79 |
15 |
693334 – <1> – 733333 |
693334 – <1> – 733333 |
30 |
693334 – <2> – 733332 |
693334 – <2> – 733332 |
|
n80 |
100 |
342000 – <20> – 357000 |
N/A |
n81 |
100 |
176000 – <20> – 183000 |
N/A |
n82 |
100 |
166400 – <20> – 172400 |
N/A |
n83 |
100 |
140600 – <20> –149600 |
N/A |
n84 |
100 |
384000 – <20> – 396000 |
N/A |
n86 |
100 |
342000 – <20> – 356000 |
N/A |
[n90] |
15 |
499200 – <3> – 537999 |
499200 – <3> – 537999 |
30 |
499200 – <6> – 537996 |
499200 – <6> – 537996 |
|
100 |
499200 – <20> – 538000 |
499200 – <20> – 538000 |
Table 5.4.2.3-2: Applicable NR-ARFCN per operating band in FR2
NR Operating band |
ΔFRaster (kHz) |
Uplink and Downlink Range of NREF (First – <Step size> – Last) |
n257 |
60 |
2054166 – <1> – 2104165 |
120 |
2054167 – <2> – 2104165 |
|
n258 |
60 |
2016667 – <1> – 2070832 |
120 |
2016667 – <2> – 2070831 |
|
n260 |
60 |
2229166 – <1> – 2279165 |
120 |
2229167 – <2> – 2279165 |
|
n261 |
60 |
2070833 – <1> – 2084999 |
120 |
2070833 – <2> – 2084999 |
根据频点和绝对频率的换算公式FREF = FREF-Offs + ΔFGlobal (NREF – NREF-Offs),其中FREF是绝对频率,NREF就是咱们说的NR-ARFCN,FREF-Offs就是上表5.4.2.1-1中的第三列,ΔFGlobal上表5.4.2.1-1中的第二列,NREF-Offs上表5.4.2.1-1中的第四列。
举例计算:
此处咱们可以假设NR-ARFCN=520146,那么查表5.4.2.1-1可得FREF-Offs =0,ΔFGlobal =5,NREF-Offs =0;代入公式计算可知0+5*(520146-0)=2600730kHz=2600.73MHz
原文:https://www.cnblogs.com/10y-dreams/p/11728800.html