Retrieving SNR/SINR values for 3G connections.

[Paul Gildea]

Great, thanks Aleksander.

On 19 Oct 2017 13:46, "Aleksander Morgado" <aleksander at aleksander.es> wrote:

> On Thu, Oct 19, 2017 at 1:45 PM, Paul Gildea <gildeap at tcd.ie> wrote:
> > I want to query a modem (MC7455) and find out the SNR values
> periodically.
> > I've noticed that this information is only available while on LTE?
> >
>
> SNR is only defined for LTE signal in the QMI NAS specs, yes:
> https://cgit.freedesktop.org/libqmi/tree/data/qmi-service-nas.json#n3225
>
> >
> > To that end I noticed that both connections report SINR.  However the
> value
> > is always static (SINR (8): '9.0 dB'), is this a placeholder or does it
> > vary?
> >
>
> The modem reports "SINR Level 8" and we convert that to 9.0 dB (it's a
> direct mapping):
> https://cgit.freedesktop.org/libqmi/tree/src/qmicli/qmicli-nas.c#n216
>
> --
> Aleksander
> https://aleksander.es
>
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