In VoLTE, does SPS should be configured every time when QCI1 is establishing?

4G LTE
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1

Hi Experts,
In VoLTE, does SPS should be configured every time when QCI1 is establishing?
I know that SPS activation doesn’t have to happen but I’m asking for SPS config.

2

SPS is not mandatory for QCI1.

3

Yes, I understand that but with assumptions that is activated on the site.
I noticed on the last few DTs that SPS config is empty and earlier is worked fine with the same testing UE.
I think that is shouldn’t be some prerequisite for SPS config if everything is set properly so just to confirm that.

4

SPS is to save CCE resource, but not good for Voice Quality.
So I see all VoLTE logs not activated SPS.

5

Please check VoLTE drop as well parallel.
It might increase with SPS activation.

6

Not implemented in VoNR so far.
We do use UL prescheduling, though.
It’d be nice to have performance numbers from the field to understand how it’ll behave.

7

SPS was activated all the time and drop is fine.
Now the problem is that I don’t see SPS config in the DT, so trying to figure out if some bug in the eNB.