中心频点计算公式_5G频点频率换算

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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'

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