ANR in NSA 5G not working

Mobility
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20

This nr-cgi reporting can be 2 IEs:

  • nr-CGI-Reporting

    • Defines whether the UE supports acquisition of relevant information from a neighbouring intra-frequency or inter-frequency NR cell by reading the SI of the neighbouring cell and reporting the acquired information to the network as specified in TS 38.331 [9] when EN-DC is not configured.

  • nr-CGI-Reporting-ENDC

    • Defines whether the UE supports acquisition of relevant information from a neighbouring intra-frequency or inter-frequency NR cell by reading the SI of the neighbouring cell and reporting the acquired information to the network as specified in TS 38.331 [9] when the EN-DC is configured.
21

So, maybe the problem is the UE?

22

Please note for 4G end.
ie name eutra-cgi-reporting-endc-r15: supported
It’s used at 4G end to report 5G CGI.

23

I found only this:

... eutra-CGI-Reporting --- supported (0)
... nr-CGI-Reporting --- supported (0)
24

Yes, then you can use at 4G end.

25

In other UE (Motorola Edge) I found it:

... reportCGI-NR-NoEN-DC-r15 --- supported (0)

26

But it´s not the same.
You said “eutra-cgi-reporting-endc-r15”.
I found “eutra-cgi-reporting”.

27

In specs it’s showing endc-cgi-reporting-endc-r15.

28

But eutra-CGI-Reporting-ENDC IE is optional for UE right and used when DRX configurations are different between MN and SN.

29

Yes, right :+1:

30

Ericsson says reporting NCGI of NR cells, using long DRX cycle.
But anyone have any idea, which IE UE will use to report an unknown gnb in NCGI measurement report?
Is it nr-CGI-Reporting-ENDC or eutra-CGI-Reporting-ENDC?

31

It’s nr-CGI-Reporting-ENDC.
But how CGI could be reported without SIB1?
This is unclear for me.
In NSA only MIB is broadcasted, no other SIB is broadcasted.
I mean for 5G.

32

ENB sets up EN-DC X2 connection by using X2 TNL address discovery procedure as per Ericsson.
Through S1 interface which includes the IP address of the reported NCGI (missing gnb).

33

All that eNodeB and serving gnodeB knows is a 5G PCI.
There can be several gNodeBs with same PCI.
Without SIB1 and CGI reporting it cannot setup an X2.

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34

In NSA 5G sib1 is optional to configure, usually not configure to save radio resource.
For UE to read CGI, we must configure sib1.

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36

How UE reports NCGI without SIB1 in NSA?
I have not seen sib1 5G in any NSA log.
Only 5G MIB.

37

Because it’s usually not configured.

38

Which is the command to activate it for Huawei?

39

Sorry, I don’t have documentation, but you can find in Hedex.

40

This is what confused me…
How it is reporting and which IE is used to report this in NCGI MR?