[srsran-users] Downlink Data Notification failure indication cause: 87

[Andrea Valori]

Pedro,

Thanks for your email.
I am not using srsue, but commercial modules (uBlox and Android mobile
phones), therefore I guess it is more difficult to track where the
hiccup is happening...

Anyway, I am adding the logs for eNB and EPC...

Regards,
Andrea

On Fri, 24 Jun 2022 at 14:18, Pedro Alvarez <pedro.alvarez at srs.io> wrote:

> Andrea --
>
> Generally speaking, the Downlink Data Notification failure is sent
> from the MME to the SPGW when paging fails.
> T_3413 is started by the MME when paging is sent, and if no service
> request is received before it expires, it will let the SPGW know of
> the failure.
>
> So my guess is that the UE did not receive the paging message.
> Could you just send the EPC, eNB and UE logs? The UE and eNB with RRC
> level at debug and MAC at info? EPC at info should suffice.
>
> Regards,
> Pedro
>
>
> On Fri, Jun 24, 2022 at 12:46 PM Andrea Valori <avalori at gmail.com> wrote:
> >
> > Sorry, I realised that the formatting goes lost when sending an email,
> making my previous message impossible to read. Here is a file more
> understandable (hopefully).
> >
> > Regards
> > _______________________________________________
> > srsran-users mailing list
> > srsran-users at lists.srsran.com
> > https://lists.srsran.com/mailman/listinfo/srsran-users
>
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