Hello experts,
I’d like to resolve a doubt about DL modulation support.
Usually I see this: if a device supports DL 256QAM, that is true for all the radio bands supported by device.
So my question is: if a device supports DL256 QAM for Band1, will it be capable to support DL256QAM for all the others radio bands supported?
Is the DL256QAM support due to device hardware only? Or is there a case which a device supports DL256QAM on Band1 and DL64QAM on Band2?
Thanks for your time
Best regards
Hello @Nazar_Pole !
There is no clear answer.
Most likely, it is necessary to look at the description of each radio unit here, since there are radio units that do not support 256QAM at all or support it in various conditions.
Hello Nekto,
I imagined it was like this, but I wanted to be sure. So far I have seen that generally if a device supports 256QAM on one band it supports it on all bands.
Thanks
You have to look for something like this in UE capability information:
rf-Parameters-v1250
supportedBandListEUTRA-v1250
[0]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[1]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[2]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[3]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[4]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[5]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[6]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[7]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[8]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[9]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[10]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[11]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[12]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[13]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[14]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[15]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[16]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[17]
dl-256QAM-r12 : supported
[18]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[19]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
[20]
dl-256QAM-r12 : supported
ul-64QAM-r12 : supported
where those 21 are bands supported by UE:
rf-Parameters
supportedBandListEUTRA
[0]
bandEUTRA : 7
halfDuplex : false
[1]
bandEUTRA : 3
halfDuplex : false
[2]
bandEUTRA : 1
halfDuplex : false
[3]
bandEUTRA : 20
halfDuplex : false
[4]
bandEUTRA : 5
halfDuplex : false
[5]
bandEUTRA : 8
halfDuplex : false
[6]
bandEUTRA : 38
halfDuplex : false
[7]
bandEUTRA : 41
halfDuplex : false
[8]
bandEUTRA : 40
halfDuplex : false
[9]
bandEUTRA : 2
halfDuplex : false
[10]
bandEUTRA : 4
halfDuplex : false
[11]
bandEUTRA : 12
halfDuplex : false
[12]
bandEUTRA : 17
halfDuplex : false
[13]
bandEUTRA : 18
halfDuplex : false
[14]
bandEUTRA : 19
halfDuplex : false
[15]
bandEUTRA : 26
halfDuplex : false
[16]
bandEUTRA : 28
halfDuplex : false
[17]
bandEUTRA : 32
halfDuplex : false
[18]
bandEUTRA : 39
halfDuplex : false
[19]
bandEUTRA : 42
halfDuplex : false
[20]
bandEUTRA : 64
halfDuplex : false
Based on what i have observed so far, if a device supports 256QAM on one band. It usually support the same of all other supported band as no change in modulation coding technique happens with change in bands i guess.