256QAM DL samples low for B20 but good for B3

4G LTE
1

Hi Team,
We have been observing very less 256QAM DL samples in DT for L8(B20) whereas in same radio on Band 3 L1800 we have good 256QAM samples.

Any idea what could be the reason?

2

What are the kpis observed for both?

3

In KPis there’s 2.5% difference in overall usage.

4

No I mean radio conditions SINR, RSRQ?

5

For just 2.5% difference you should not be concerned.

6

In stats it’s not showing much of a difference.
But when we do Drive Test there are hardly any samples in L8.

Different handsets have been tried but results are still the same.

7

256 QAM is strictly depending on CQI reported by UE.

There are networks where 256QAM in DL is way over 40% in drivetest, for other networks is less than 10% 256QAM in drivetest. It depends on intersite distance and tilts.