Is there any IE limiting the CSI reports UE can send?

Specs & Protocol Testing
1

Hi Experts,
Is there any IE limiting the CSI reports UE can send?
This is NSA scenario.
There are 8 FR2 NR cells and 3 cells configured for csi reporting.
CSI report received for cell1 and cell2 OR cell1 and cell3, but not cell1, cell2 and cell3.

2

I think report quantity is only IE need to configure per cell.
As it’s network driven and UE need to follow it.
So not seeing any limitation.

3

Read about this IE: simultaneousCSI-ReportsAllCC

Indicates whether the UE supports CSI report framework and the number of CSI report(s) which the UE can simultaneously process across all CCs. The CSI report comprises periodic, semi-persistent and aperiodic CSI and any latency classes and codebook types. The CSI report in simultaneousCSI-ReportsAllCC includes the beam report and CSI report. This parameter may further limit simultaneousCSI-ReportsPerCC in MIMO-ParametersPerBand and Phy-ParametersFRX-Diff for each band in a given band combination.

More details here:https://itectec.com/spec/5g-nr-ue-capability-parameters/

I checked one. UE Mate 40 pro of Huawei and is maximum 2:

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4

Moto EDGE is 4:

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If I’m not mistaken, the UE can be configured with more and be commanded via DCI of which will be effectively used.

5

Is it Periodic or periodic CSI?
UE Reports whatever is configured in the Report config.

6

It’s Periodic CSI.
This is NSA Scenario and has LTE cell + 8 FR2 NR cells.
Configured periodic CSI for all the 8 NR cells.
Currently only CSI is received for only 2 cells.
Not sure what is the issue here.

7

Couple of things you can check here:

  • Does UE report CSI RS for only particular cells or does UE reports for all cells but reports only 2 cells at a time?
  • Can you also check if UE has enough PUCCH resources to send all 8 CDI RS reports?
  • Is CSI rs reports configured over PUCCH or pusch?

Also if it’s PUCCH I think you need to configure PUCCH format3 with enough RBs to send all PUCCH reports.