256QAM Traffic Ratio formula

256qam traffic ratio network formula:
100*decode( (lcellt2.schdl_256qam_vol_pdsch_qpsk + lcellt2.schdl_256qam_vol_pdsch_16qam + lcellt2.schdl_256qam_vol_pdsch_64qam + lcellt2.schdl_256qam_vol_pdsch_256qam),0,null, (lcellt2.schdl_256qam_vol_pdsch_256qam) / (lcellt2.schdl_256qam_vol_pdsch_qpsk + lcellt2.schdl_256qam_vol_pdsch_16qam + lcellt2.schdl_256qam_vol_pdsch_64qam + lcellt2.schdl_256qam_vol_pdsch_256qam))

Vendor is Nokia.
Is this fine?
Anyone can explain the meaning of this formula?

I am checking %OF DL 256QAM samples, via counters um, and it shows <1%.

This counters only for capable 256qam UE supported, not for all UE.

It seems right, thanks.

Why 4G network wide 256qam modulation usage in DL is so low like less than 5%?

Due to 2 main reason:

  1. % of users supporting.
  2. High radio conditions prerequisite.
  1. Lots of UE support 256 QAM.
  2. RF conditions SINR depends on intersite distance.

Why MNO do not invest in more sites to increase capacity?
There’s a direct relation between SINR and intersite distance.
MNO keep adding layers on existing sites but they hardly deploy new sites.

Min CQI required 12 very difficult.
All 5G device by default support DL256QAM.

Mobile like in India we still have 64 QAM device a lot :grin:.

High investment. CAPEX, and OPEX too.

I agree with this @RFSpecialist, not always sector or carrier addition will play a role. Sometimes new site can be the requirement in high user area.

You can tweek some para for little more optimization.
Like DL256 qam time to trigger kind of supplier wise.

Like in India?
People pay approx 199 RS (or ~3 US dollars) for a month of usage.
So I guess the revenue is too low for companies to actually think about user experience…

Agreed. Not possible in India.
Maybe in other countries.

UE supporting LTE 256qam must be from cat 12.
In my network, about 20-30%.
Huawei has very few counter about UE category, while Nokia has many.

Yes, but 256 QAM % is less than 5%.

256qam traffic is so small.
<5% is normal.
Beside: percentage of UE supporting 256qam, SINR good to reach 256qam.
To schedule 256qam, it also depend on large-packet traffic.

To me is a clear indication of not enough sites and strong pollution and overlapping.

This is one reason.

When I see networks with more than 40% of the cells having more than 60-70 neighbours there’s clearly a problem.