[srsran-users] SDR for 5G NSA

[Ralph A. Schmid, dk5ras]

It should be good for 61.44 MHz...

 

From: srsran-users [mailto:srsran-users-bounces at lists.srsran.com] On Behalf Of Liam Fruzyna
Sent: Monday, December 6, 2021 4:29 PM
To: Andre Puschmann <andre.puschmann at srs.io>
Cc: srsran-users at lists.srsran.com
Subject: Re: [srsran-users] SDR for 5G NSA

 

Thanks for the explanation Andre. I was able to borrow a B210 for testing and was also unable to find a suitable band combination for our UEs and the SDR. Unfortunately it seems the B210's 56 MHz of bandwidth is just a few MHz too thin for many of the interesting bands.

 

Liam 

 

On Thu, Dec 2, 2021 at 3:18 AM Andre Puschmann <andre.puschmann at srs.io <mailto:andre.puschmann at srs.io> > wrote:

Liam,

for 5G NSA to work with srsRAN, both the UE and the eNB, require a SDR 
with two independable tunable RF chains. See [1] for details on it.

This requirement stems from the fact that band combinations for NSA for 
commercial handsets are very restrictive. We couldn't find a combo that 
fits in the analog bandwidth of a dual-channel SDR with a combined LO 
for both chains, like the B210. If you can, it might be possible to use 
that for NSA with COTS phones.

Thanks
Andre


[1] 
https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.srsran.com_en_latest_app-5Fnotes_source_5g-5Fnsa-5Fcots_source_index.html <https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.srsran.com_en_latest_app-5Fnotes_source_5g-5Fnsa-5Fcots_source_index.html&d=DwIDaQ&c=q3cDpHe1hF8lXU5EFjNM_C93KOmcBXCBnhee2v6PYlc&r=AtSro4DufTwmBgpOjhWumn37K8fS9EEKqss-YAmIHNwGm_z8wdEhnuMVbP9ohTL0&m=eYNwZMbbnnVz8fPBycssdQY6htFlrXhDEiWux7nivimH_duDXjIrWuXpy2vi-1PT&s=oewBB79uebwJCQke8lKANLOC7EsQsCs7dsTOK6IQEYg&e=> &d=DwIDaQ&c=q3cDpHe1hF8lXU5EFjNM_C93KOmcBXCBnhee2v6PYlc&r=AtSro4DufTwmBgpOjhWumn37K8fS9EEKqss-YAmIHNwGm_z8wdEhnuMVbP9ohTL0&m=eYNwZMbbnnVz8fPBycssdQY6htFlrXhDEiWux7nivimH_duDXjIrWuXpy2vi-1PT&s=oewBB79uebwJCQke8lKANLOC7EsQsCs7dsTOK6IQEYg&e= 


On 1/12/21 18:30, Liam Fruzyna wrote:
> Greetings,
> 
> I have been successfully running the eNodeB with a USRP B200 mini, but 
> am looking to try 5G NSA which will require a more capable SDR. The wiki 
> recommends the X300 series. Has anybody tried it with a B210 or other 
> lower tier USRP?
> 
> Thanks,
> Liam
> 
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-- 
Andre Puschmann

Software Radio Systems (SRS)
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andre at srs.io <mailto:andre at srs.io> 

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