5G connection establishment

[Sebastian Sjoholm]

Hi,

I don't have MM installed, but when using minicom on the AT port,

at+qeng="servingcell"
+QENG: "servingcell","NOCONN"
+QENG: "LTE","FDD",235,96,11A8801,270,225,1,5,5,D9,-75,-5,-52,24,-
+QENG:"NR5G-NSA",235,96,330,-64,345,-11
OK

Regards,
Sebastian


On Tue, Sep 29, 2020 at 7:47 PM Federico Murciano <
Federico.Murciano at dai-labor.de> wrote:

> Hi Reinhard,
>
> Thanks for your reply. I still get the same output:
>
> edge1 at dai-edge1:~$ sudo mmcli -m 1 '--command=at+qeng="servingcell"'
> error: command failed:
> 'GDBus.Error:org.freedesktop.ModemManager1.Error.Connection.NoCarrier: No
> carrier'
>
> edge1 at dai-edge1:~$ sudo mmcli -m 1 --command=at+qeng="servingcell"
> error: command failed:
> 'GDBus.Error:org.freedesktop.ModemManager1.Error.Connection.NoCarrier: No
> carrier'
>
>
> --
> Federico Murciano
> B.Sc. Telecommunications Engineer
> federico.murciano at dai-labor.de
> Tel. +49 (0) 30/314 -74 025
> Future in touch.
> DAI-Labor
> Technische Universität Berlin
> Fakultät IV – Elektrotechnik & Informatik Sekretariat TEL 14
> Ernst-Reuter-Platz 7
> 10587 Berlin, Germany
>
> www.dai-labor.de
>
> DAI-Labor - Distributed Artificial Intelligence Laboratory Chief Executive
> Director: Prof. Dr. Dr. h.c. Sahin Albayrak
>
> ________________________________________
> Von: ModemManager-devel <modemmanager-devel-bounces at lists.freedesktop.org>
> im Auftrag von Reinhard Speyerer <rspmn at arcor.de>
> Gesendet: Dienstag, 29. September 2020 19:00
> An: Federico Murciano
> Cc: modemmanager-devel at lists.freedesktop.org; Sebastian Sjöholm
> Betreff: Re: 5G connection establishment
>
> On Tue, Sep 29, 2020 at 02:40:31PM +0000, Federico Murciano wrote:
> > Si Sebastian,
> >
> > When I run the at+qeng=???servingcell??? command with mmcli as:
> >
> > sudo mmcli -m 0 --command=at+qeng=???servingcell???
> >
> > I get the following error:
> >
> > GDBus.Error:org.freedesktop.ModemManager1.Error.Connection.NoCarrier: No
> carrier'
> >
> > Do you know why am I getting it?
> >
> > Thank you!
> >
>
> Hi Federico,
> you have to take shell quoting into account:
>
> $ echo sudo mmcli -m 0 --command=at+qeng="servingcell"
> sudo mmcli -m 0 --command=at+qeng=servingcell
> $ echo sudo mmcli -m 0 '--command=at+qeng="servingcell"'
> sudo mmcli -m 0 --command=at+qeng="servingcell"
>
> Regards,
> Reinhard
>
> > --
> > Federico Murciano
> > B.Sc. Telecommunications Engineer
> > federico.murciano at dai-labor.de
> > Tel. +49 (0) 30/314 -74 025
> > Future in touch.
> > DAI-Labor
> > Technische Universität Berlin
> > Fakultät IV ??? Elektrotechnik & Informatik Sekretariat TEL 14
> Ernst-Reuter-Platz 7
> > 10587 Berlin, Germany
> >
> > www.dai-labor.de
> >
> > DAI-Labor - Distributed Artificial Intelligence Laboratory Chief
> Executive Director: Prof. Dr. Dr. h.c. Sahin Albayrak
> >
> > ________________________________________
> > Von: Sebastian Sjöholm <sebastian.sjoholm at gmail.com>
> > Gesendet: Dienstag, 29. September 2020 05:37
> > An: Nick B
> > Cc: Federico Murciano; modemmanager-devel at lists.freedesktop.org
> > Betreff: Re: 5G connection establishment
> >
> > Hi,
> >
> > When using NSA (ENDC) the anchor will always be LTE, so for the modem
> LTE will be the primary network.
> >
> > The NR will only be used for the user plane, and activated only during
> data session, but even during data session signalling (control plane) will
> be on LTE.
> >
> > Depending on network setup, the NR session will be disconnected right
> after the data session. At some it can be instant, other might have longer
> timeouts.
> >
> > On RM500 you can check with at+qeng=???servingcell??? and on SIM8200
> at+cpsi? to see if the additional NR cell is connected after or during data
> session.
> >
> > Regards,
> > Sebastian
> >
> > @Mobile
> >
> > > On 29 Sep 2020, at 00:21, Nick B <nickberry17 at icloud.com> wrote:
> > >
> > > ???Hey,
> > >
> > > Just for the record, I am having the excat same experience in
> Australia with at Quectel RM500Q-GL and SIMCOM SIM8200EA-M2.  Is there any
> debugging info that would be helpful?
> > >
> > > Best,
> > > Nick
> > > _______________________________________________
> > > ModemManager-devel mailing list
> > > ModemManager-devel at lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
> > _______________________________________________
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> > ModemManager-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
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