How does gNB indicate session AMBR to UE?

[susbose10]

Hello Experts.

How does gNB indicate session AMBR to UE?

Any IEs?

Admin note: this post was updated with image below.

[pappu_kumar_Chaurash]

It can be seen in PDU establishment accept message.

[susbose10]

I see this in PDU session resource setup (AMF-> gNB)

50:DL and 50:UL

And will gNB indicate in reconfig?

[pappu_kumar_Chaurash]

No!

It won’t reflect in RRC reconfiguration message.

[susbose10]

My bad… it will be NAS message.

So who enforces UL PDU session AMBR?

[pappu_kumar_Chaurash]

Not sure… expecting some response from 5G core guys here in forum.

[susbose10]

Yes.

I want to understand… Will gNB have any role to play in UL PDU session AMBR?

As UE will receive the info as a NAS message…

[Manoj_deka]

I think UL PDU Session AMBR is defined in the SMF, no role of gNB.

[susbose10]

Thanks!

Even I think the same. This is my understanding based on spec.