Only half of Expected Throughput in 5G

5G NR
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1

Hi Experts,
I’m getting bad Tput in my 5G NR network and trying to understand the root cause for this.

I get bad Tput results with MCS 22, 3DL slots I expect to see 560 Mbps, actual is 250 Mbps at best.
With MCS 16, 1UL slots I expect to see 130 Mbps, actual is 60 Mbps at best.

I see in both cases half what’s expected.
What can be the reason for this?

2

What frame structure you used?
Have you used power back off?
What is your DL MIMO mode?
How much is CSI-RS periodicity?

3

Frame structure is 3DL slots, DL MIMO 2×2 , no CSI-RS periodicity.

4

Can you try with semi static frame structure, DL MIMO mode 4x4, 256 QAM DL modulation scheme, CSI-RS periodicity 320 slots?

5

There’s no CSI-RS periodicity.
MCS try with 22?
It’s cell test.

6

Then how UE sending csi report to gNB?

Ok. You mean it’s machine test.

Where did you configure MCS 22?

7

In Cell Configuration.

8

Which simulator used?