[srsran-users] srsUE not connecting to commercial eNB

[Robert Falkenberg]

Hi Anup,

maybe the commercial eNB provides some info about the reason of the 
failed PDN connectivity request in their logs?

Best regards,
Robert

On 29.08.22 10:57, Anup Bhattacharjee wrote:
> Good Morning All,
>
> _Background:_
> The UE is built in Release mode using commit 5275f3336 on branch master.
> SDR: B210.
> Computational Unit: NUC
>
> Antennas used: AntennaType1 
> <https://www.passion-radio.com/gsm/gsm-4g-3g-278.html>, AntennaType2 
> <https://nl.mouser.com/ProductDetail/960-TG.55.8113W>
>
> _Problem:_
> In my current project, I am trying to connect the srsUE to a 
> commercial eNB.
>
> I am able to connect (able to send data through iperf) the srsUE with 
> the srseNB(+srsEPC) in my lab settings (UE and eNB placed around 30-50 
> cm apart) using antennas and also with coaxial cables.
>
> But when I try to connect to the commercial eNB, after the srsUE sends 
> a "RRCConnectionSetupComplete, Attach request, PDN connectivity 
> request"  message it receives an "RRCConnectionRelease [cause=other]" 
> message. I am attaching the log and pcap file for the srsUE. I have 
> double-checked the settings on the ue.conf, they seem to be fine. COTS 
> UEs are able to connect to the commercial eNB using the same USIM 
> settings.
>
> In order to see that it is not an antenna issue I have done 
> experiments by being around 7-8 meters LOS, but the issue kept 
> repeating itself.
>
> I have changed the freq_offset in ue.conf so that: -1KHz<=CFO<=1KHz, 
> but the issue kept repeating itself.
>
> May I know if anyone else had similar issues, and how did you resolve 
> them? Or, if anyone has ideas of what I could do to debug this issue 
> better?
>
> Kind Regards,
>
> Anup Bhattacharjee
>
>
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> srsran-users at lists.srsran.com
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-- 


      RobertFalkenberg

Senior Engineer

Software Radio Systems

	

	
	

	

	robert at srs.io <mailto:robert at srs.io>

	www.srs.io <//www.srs.io>

	Dortmund, Germany




	
twitter <https://twitter.com/srssystems> 	
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