12 Feb
2020
12 Feb
'20
8:15 p.m.
Hello Sandi and Neels,
@Neels: :-) \o thanks.
@Sandi:
Thank you for the idea. I have changed the attenuation to oml, and I could observe the
following:
All Qcomm based devices now see the network and with a bit of luck they could register:
Xiaomi Mi5, Samsung A90 5G, iPhone X.
However any Exynos based device (S6, S7, S8) simply refuses to even detect the network.
Any time I put in a sysmocom SIM in a Qcomm based device it happily goes on the new
network. On the other hand if the same SIM card is plugged into an Exynos device it shows
No service and even with manual search it cannot detect the network.
I assume with other radio hardware (e.g. umTRX) there are no issues with Exynos devices,
so it is most probably the USRP not being good enough I think.
However if anybody has any other ideas I’d still be happy to get any feedback and try
things out :).
Cheers,
Domi
2020. febr. 12. dátummal, 14:20 időpontban Sandi
Suhendro <djks74(a)gmail.com> írta:
Dear Tomi,
have you try to set attenuation set to OML and osmo-trx?
osmotrx rx-gain 30
osmotrx tx-attenuation oml
Im not sure but I saw your attenuation is set. :-)
I think I face the problem before but using Motorola C115/117 cannot connect, but it was
resolved now long time ago with newer osmo-bts.
regards,
Sandi
On Wed, Feb 12, 2020 at 7:10 PM Neels Hofmeyr
<nhofmeyr(a)sysmocom.de> wrote:
On Wed, Feb 12, 2020 at 09:42:42AM +0100, Tomcsányi, Domonkos wrote:
--
Best Regards,
Sandi
p.s. It is simply awesome to experience the power
of opensource when dealing with 2G. Every step of the way above I was using software
created and shared by you guys. It is a great feeling, had to share it :-).
Thanks Domi!!
I hope someone has answers your questions, I don't but wanted to wave back
anyway \o_
~N