[srsran-users] srsUE unable to attach to USRP N210

[Johann T.]

Hi Andrei,

It won't work with N210 due to the fixed sample rate of 100 MHz, which is
not the multiple of the common LTE sampling rates. You would need B210 for
that.

Good luck!

Johann


On Tue, Feb 21, 2023 at 6:13 PM Andrew <at1288 at live.mdx.ac.uk> wrote:

> Hello!
>
> I have a major project for uni that requires me to create a phantom-cell
> 4G/5G network.
>
> The professor provided me with two N210 USRPs and managed to flash them
> both with the right firmware and both are detectable by pinging their ips.
>
> But when it comes to using SRS nothing works - srs won't attach to any of
> them. Yet, when running *sudo srsue *it appears as that it recognizes the
> USRP2/N-series but won't go any further.
>
> I am extremely newbie in this field, I have just some tiny linux
> experience and basic C programming skills.
>
> Please see attached the error
>
> [ERROR] [UHD RF] AssertionError: assertion failed:
>   internal is not a valid time source.
>   possible values are: [none, external, _external_, mimo].
>
>
> and
>
>
> Unable to open RF device 'file'
> /home/andrew/srsRAN/lib/src/phy/rf/rf_imp.c:149: Failed to open a RF
> frontend device. Please check the available srsRAN CMAKE options to verify
> what RF frontend devices have been detected in your system
> Error initializing radio.
>
>
> Please advise.
>
> Best regards,
>
> Andrei-Paul Tocu
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>
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