Does any network uses CSI-RS for Layer3 Measurements instead of SSB?

5G NR
, ,
1

Hello Guys,
I have one question:
Does any network uses CSI-RS for Layer3 Measurements instead of SSB?
I mean CSI-RS is configured in MeasOject in NR cell…

4

If beam refinement is enabled, yes.

5

Yes, with beam refinement only we can use it.

6

Do you have any sample configuration of Measurement object configured with CSI-RS that you can share?

7

Which IE are you looking after?

8

CSI-RS-Resource-Mobility.

9

At least for the rrcReconfigurations I have, I don’t see this one.
Basically NW configures all nzp_CSI-RS and changes reportQuantity.

{
                              nzp-CSI-RS-ResourceId 49,
                              resourceMapping 
                              {
                                frequencyDomainAllocation row1 : '0001'B,
                                nrofPorts p1,
                                firstOFDMSymbolInTimeDomain 11,
                                cdm-Type noCDM,
                                density three : NULL,
                                freqBand 
                                {
                                  startingRB 36,
                                  nrofRBs 124
                                }
                              },
                              powerControlOffset 4,
                              powerControlOffsetSS db0,
                              scramblingID 891,
                              periodicityAndOffset slots40 : 1,
                              qcl-InfoPeriodicCSI-RS 3
                            }
                          },


csi-ReportConfigToAddModList 
                          {
                            {
                              reportConfigId 0,
                              resourcesForChannelMeasurement 0,
                              csi-IM-ResourcesForInterference 11,
                              reportConfigType periodic : 
                                {
                                  reportSlotConfig slots320 : 53,
                                  pucch-CSI-ResourceList 
                                  {
                                    {
                                      uplinkBandwidthPartId 1,
                                      pucch-Resource 21
                                    }
                                  }
                                },
                              reportQuantity cri-RI-PMI-CQI : NULL,

And changes reportQuantity to CRI-PMI-CQI instead of SSB-RSRP.

10

These messages are used for L1 Reports, but Network can also configure CSI-RS for L3-RRC Measurement reports.

11

I don’t see that on the LOGs I have.

12

Anyway, tThanks for looking.
I don’t think the Networks right now have deployed this option.

13

Maybe is this what you are looking for?

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image1042×699 97.7 KB

14

Csi-rs configured under MeasObject.

I am looking for this config:

image
image1600×1262 173 KB

15

@samohiuddin major OEMs use SSB only for initi cell acquisition , cell reselection and connected mode mobility scenarios. However, there is a provision in most of OEMs to have CSI-RS configured for connected mode based mobility through some configurable parameters but most of still follow SSB based measurements. But I heard Ericsson uses CSI-RS based measurements for connected based mobility in some markets.
Hope this helps. Thank you.

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