C-V2X 频点-频段简介

朱雀 2022-12-25 03:59 179阅读 0赞

# 1. 缩略语 #

1.B band 频段 一个频率的范围或者频谱的宽度

2.UL Uplink 上行链路

3.DL Downlink 下行链路

4.EARFCN E-UTRA Absolute Radio Frequency Channel Number 载波频点号

5. F U L F\_\{UL\} FUL Frequency Uplink 载频上行频率

6. N U L N\_\{UL\} NUL EARFCN Uplink 载频上行频点号

7. F D L F\_\{DL\} FDL Frequency Downlink 载频下行频率

8. N D L N\_\{DL\} NDL EARFCN Downlink 载频下行频点号

9. F D L \_ l o w F\_\{DL\_\\\_low\} FDL\_low 对应频段的最低下行频率

10. N O f f s \_ D L N\_\{Offs\\\_DL\} NOffs\_DL 对应频段的最高下行频点号

11. F U L \_ l o w F\_\{UL\_\\\_low\} FUL\_low 对应频段的最低上行频率

12. N O f f s \_ U L N\_\{Offs\\\_UL\} NOffs\_UL 对应频段的最高上行频点号

# 2.公式 #

1.下行 频点-频率转换  
 F D L = F D L \_ l o w + 0.1 ( N D L − N O f f s \_ D L ) F\_\{DL\}=F\_\{DL\_\\\_low\}+0.1\\left(N\_\{DL\}-N\_\{Offs\\\_DL\}\\right) FDL=FDL\_low\+0.1(NDL−NOffs\_DL)

2.上行 频点-频率转换  
 F U L = F U L \_ l o w + 0.1 ( N U L − N O f f s \_ U L ) F\_\{UL\}=F\_\{UL\_\\\_low\}+0.1\\left(N\_\{UL\}-N\_\{Offs\\\_UL\}\\right) FUL=FUL\_low\+0.1(NUL−NOffs\_UL)

# 3.各频段对应的频点 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODU0Mjkx_size_16_color_FFFFFF_t_70]

# 4. LTE频点/频率换算工具 V0.1 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODU0Mjkx_size_16_color_FFFFFF_t_70 1]  
计算步骤：

1.   N D L − N O f f s \_ D L N\_\{DL\}-N\_\{Offs\\\_DL\} NDL−NOffs\_DL \-> 55140 -54540 = 600
2.   0.1 ∗ ( N D L − N O f f s \_ D L ) 0.1\* (N\_\{DL\}-N\_\{Offs\\\_DL\}) 0.1∗(NDL−NOffs\_DL) \-> 0.1 \* ( 55140 -54540) = 60
3.   F D L = F D L \_ l o w + 0.1 ( N D L − N O f f s \_ D L ) F\_\{DL\}=F\_\{DL\_\\\_low\}+0.1\\left(N\_\{DL\}-N\_\{Offs\\\_DL\}\\right) FDL=FDL\_low\+0.1(NDL−NOffs\_DL) \- > 5855 + 60 = 5915
4.  即 55140 （频点） 对应 5915MHZ （频率）  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODU0Mjkx_size_16_color_FFFFFF_t_70 2]

# 5. 总结 #

首先考虑使用频带，其次频点与频段有对应关系，且C-V2X通信要求频点一致，带宽一致（10/20MHZ）

# 6. 参考文献 #

1.[EARFCN Frequency转换工具（含源码）][EARFCN Frequency]  
2.[LTE学习笔记：频带、信道带宽和频点号EARFCN][LTE_EARFCN]  
3.[5G NR Bands定义及频率-频点 Frequency-ARFCN计算 (在线工具)][5G NR Bands_-_ Frequency-ARFCN_]

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[EARFCN Frequency]: https://download.csdn.net/download/jianjianblog/9718026
[LTE_EARFCN]: https://blog.csdn.net/u010182186/article/details/90437571?utm_medium=distribute.pc_relevant.none-task-blog-searchFromBaidu-2.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-searchFromBaidu-2.control
[5G NR Bands_-_ Frequency-ARFCN_]: https://blog.csdn.net/zzeis/article/details/96307960?utm_medium=distribute.pc_relevant_download.none-task-blog-blogcommendfrombaidu-2.nonecase&depth_1-utm_source=distribute.pc_relevant_download.none-task-blog-blogcommendfrombaidu-2.nonecas