5G-频点频率换算
换算原理
NR-ARFCN和实际频点计算公式如下：
FREF = FREF-Offs +ΔFGlobal (NREF –NREF-Offs)
FREF_Shift = FREF + ΔShift , ΔShift=0kHz or 7.5kHz
栅格步长查询表：
NRB查询表：
GSCN计算公式：
各频段GSCN范围：
项目展示
通过中心频率计算频点：
通过中心频点计算频率：
项目代码
#5G各种带宽在不同Scs下的RB数
scs_15 = {'5':25,'10':52,'15':79,'20':106,'25':133
,'30':160,'40':216,'50':270}
scs_30 = {'5':11,'10':24,'15':38,'20':51,'25':65
,'30':78,'40':106,'50':133,'60':162
,'70':189,'80':217,'90':245,'100':273}
scs_60 = {'10':11,'15':18,'20':24,'25':31
,'30':38,'40':51,'50':65,'60':79
,'70':93,'80':107,'90':121,'100':135
,'200':264}
scs_120 ={'50':32,'100':66,'200':132,'400':264}
#---------------------GSCN输出----------------------
def gscn_print(Fref):
if Fref < 3000 and Fref > 0:
n = int((Fref-0.15)/1.2)
return 3*n
if Fref < 24250 and Fref > 0:
n = int((Fref-3000)/1.44)
return 7499+n
if Fref < 100000 and Fref > 0:
n = int((Fref-24250.08)/17.28)
return 22256+n
return 'NA'
#--------------------RB数据输出---------------------
def rb_print(scs,bandwidth):
if scs == 120:
return scs_120[bandwidth]
if scs == 60:
return scs_60[bandwidth]
if scs == 30:
return scs_30[bandwidth]
return scs_15[bandwidth]
#--------------------SSB频点输出--------------------
def ssb_print(Rb_number,Nref,scs,F_global):
if Rb_number % 2 == 0:
return Nref
else:
return Nref-(6*scs)/(F_global*10**3)
#-----------------中心频点步长输出------------------
def step_print(scs,band):
if band == 'Band-41':
if scs == 30:
return 6
else:
return 3
if band == 'Band-77' or band == 'Band-78' or band == 'Band-79':
if scs == 30:
return 2
else:
return 1
return 20
#---------------------Band输出----------------------
def Band_print(Nref):
if Nref > 402000 and Nref < 405000:
return 'Band-34'
if Nref > 514000 and Nref < 524000:
return 'Band-38'
if Nref > 376000 and Nref < 384000:
return 'Band-39'
if Nref > 460000 and Nref < 480000:
return 'Band-40'
if Nref > 499200 and Nref < 537999:
return 'Band-41'
if Nref > 285400 and Nref < 286400:
return 'Band-51'
if Nref > 42200 and Nref < 440000:
return 'Band-66'
if Nref > 399000 and Nref < 404000:
return 'Band-70'
if Nref > 123400 and Nref < 130400:
return 'Band-71'
if Nref > 286400 and Nref < 303400:
return 'Band-75'
if Nref > 285400 and Nref < 286400:
return 'Band-76'
if Nref > 620000 and Nref < 653333:
return 'Band-78'
if Nref > 620000 and Nref < 680000:
return 'Band-77'
if Nref > 693334 and Nref < 733333:
return 'Band-79'
if Nref > 422000 and Nref < 434000:
return 'Band-1'
if Nref > 386000 and Nref < 398000:
return 'Band-2'
if Nref > 361000 and Nref < 376000:
return 'Band-3'
if Nref > 173800 and Nref < 178800:
return 'Band-5'
if Nref > 524000 and Nref < 538000:
return 'Band-7'
if Nref > 185000 and Nref < 192000:
return 'Band-8'
if Nref > 145800 and Nref < 149200:
return 'Band-12'
if Nref > 158200 and Nref < 164200:
return 'Band-20'
if Nref > 386000 and Nref < 399000:
return 'Band-25'
if Nref > 151600 and Nref < 160600:
return 'Band-28'
return 'NA'
#---------------------频率转频点----------------------
def Nref_point():
#判断用户输入的中心频率是否合法
while True:
Fref = input('\n请输入中心频率:')
try:
if int(float(Fref)) > 0:
break
else:
print('不合规请重新输入')
except:
print('不合规请重新输入')
#判断用户输入的小区带宽是否合法
while True:
bandwidth = input('请输入小区带宽(单位MHz):')
if bandwidth.isdigit():
if int(bandwidth) in [5,15,20,25,30,40,50,60,70,80,90,100,200,400]:
break
else:
print('不合规请重新输入')
else:
print('不合规请重新输入')
#判断用户输入的子载波间隔是否合法
while True:
Scs = input('请输入子载波间隔(单位KHz):')
if Scs.isdigit():
if int(bandwidth) < 51 and int(Scs) == 15:
break
if int(bandwidth) < 101 and int(Scs) == 30:
break
if int(bandwidth) > 11 and int(bandwidth) < 101 and int(Scs) == 60:
break
if int(bandwidth) > 51 and int(bandwidth) <101 and int(Scs) == 120:
break
else:
print('不合规请重新输入')
else:
print('不合规请重新输入')
if int(Fref) < 100000:
F_global = 60*10**-3
Fref_offs = 24250
Nref_offs = 2016667
if int(Fref) < 24250:
F_global = 15*10**-3
Fref_offs = 3000
Nref_offs = 600000
if int(Fref) < 3000:
F_global = 5*10**-3
Fref_offs = 0
Nref_offs = 0
Nref = (int(Fref)-Fref_offs)/F_global+Nref_offs #中心频点计算
print(Nref)
Band = Band_print(Nref) #频带获取
print(Band)
Step_size = int(step_print(int(Scs),Band)) #频点栅格步长获取
print(Step_size)
#中心频点修正
while int(Nref) % Step_size != 0:
Nref+=1
Rb_number = rb_print(int(Scs),str(int(bandwidth))) #NRB数据获取
SSB_ref = ssb_print(Rb_number,Nref,int(Scs),F_global) #SSB频点获取
Gscn = gscn_print(int(Fref)) #GSCN获取
print('\n计算结果如下：')
print(' 中心频率：',Fref,'MHz')
print(' 小区带宽：',bandwidth,'MHz')
print(' 载波间隔：',Scs,'KHz')
print(' NRB个数：',Rb_number)
print(' 频点栅格：',int(F_global*10**3),'KHz')
print(' 中心频点:',int(Nref))
print(' SSB频点:',int(SSB_ref))
print(' GSCN频点:',Gscn)
print(' 小区频带:',Band)
print(' 频点步长:',Step_size)
#---------------------频点转频率----------------------
def Fref_point():
#判断用户输入的中心频点是否合法
while True:
Nref = input('\n请输入中心频点:')
if Nref.isdigit():
if int(Nref) > 0:
break
else:
print('不合规请重新输入')
else:
print('不合规请重新输入')
#判断用户输入的小区带宽是否合法
while True:
bandwidth = input('请输入小区带宽(单位MHz):')
if bandwidth.isdigit():
if int(bandwidth) in [5,15,20,25,30,40,50,60,70,80,90,100,200,400]:
break
else:
print('不合规请重新输入')
else:
print('不合规请重新输入')
#判断用户输入的子载波间隔是否合法
while True:
Scs = input('请输入子载波间隔(单位KHz):')
if Scs.isdigit():
if int(bandwidth) < 51 and int(Scs) == 15:
break
if int(bandwidth) < 101 and int(Scs) == 30:
break
if int(bandwidth) > 11 and int(bandwidth) < 101 and int(Scs) == 60:
break
if int(bandwidth) > 51 and int(bandwidth) <101 and int(Scs) == 120:
break
else:
print('不合规请重新输入')
else:
print('不合规请重新输入')
if int(Nref) < 3279167:
F_global = 60*10**-3
Fref_offs = 24250
Nref_offs = 2016667
if int(Nref) < 2016666:
F_global = 15*10**-3
Fref_offs = 3000
Nref_offs = 600000
if int(Nref) < 599999:
F_global = 5*10**-3
Fref_offs = 0
Nref_offs = 0
Band = Band_print(int(Nref)) #频带获取
Step_size = int(step_print(int(Scs),Band)) #频点栅格步长获取
Fref = int(Fref_offs + F_global*(int(Nref) - Nref_offs)) #中心频率计算
Rb_number = rb_print(int(Scs),str(int(bandwidth))) #NRB数据获取
SSB_ref = ssb_print(Rb_number,int(Nref),int(Scs),F_global) #SSB频点获取
Gscn = gscn_print(int(Fref)) #GSCN获取
print('\n计算结果如下：')
print(' 中心频率：',Fref,'MHz')
print(' 小区带宽：',bandwidth,'MHz')
print(' 载波间隔：',Scs,'KHz')
print(' NRB个数：',Rb_number)
print(' 频点栅格：',int(F_global*10**3),'KHz')
print(' 中心频点:',int(Nref))
print(' SSB频点:',int(SSB_ref))
print(' GSCN频点:',Gscn)
print(' 小区频带:',Band)
print(' 频点步长:',Step_size)
#-----------------------程序入口------------------------
if __name__ == '__main__':
print('5G子载波间隔与小区带宽对应规则：')
print(' 15KHz间隔:5M 10M 15M 20M 25M 30M 40M 50M')
print(' 30KHz间隔:5M 10M 15M 20M 25M 30M 40M 50M 60M 70M 80M 90M 100M')
print(' 60KHz间隔:10M 15M 20M 25M 30M 40M 50M 60M 70M 80M 90M 100M 200M')
print(' 120KHz间隔:50M 100M 200M 400M')
while True:
sele = input('\n请选择计算方式：1、频率转频点；2、频点转频率;3、退出程序:')
if sele.isdigit():
if int(sele) == 3:
print('\n欢迎再次使用！')
exit(0)
if int(sele) == 1:
Nref_point()
continue
if int(sele) == 2:
Fref_point()
continue
else:
print('输入有误请重新输入')
else:
print('输入有误请重新输入'网优苦短，我用Python
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原始发表：2019-12-16，如有侵权请联系 cloudcommunity@tencent.com 删除
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