Secondary RAT message usage report in ENDC

RAN
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1

Hi all,

In ENDC, there is a process message called Secondary RAT Message Usage Report. Could someone please explain it in detail? Specifically:

  • Is it mandatory or optional?
  • Where does it appear in the call flow?

Thank you in advance.

2

SRDUR (Secondary data usage report) is a optional procedure depends on gNB implementation.

This procedure will be enabled at NgB so that gNB should send the Data usage of an UE while release the UE.

3

The master eNodeB has parameters that can enable this procedure.

As per 3GPP, it measures UE data at the PDCP layer.

If someone could share a detailed flow or diagram, it would make it easier to understand where and how this procedure fits in.