[srslte-users] how to ensure commercial ue online for a long time

[Andre Puschmann]

Hey,

your enb.log shows many lates, like this:

22:15:00.762348 [RF  ] [I] Late (detected in asynchronous thread)

This likely causes the UE to lose sync. You need to get rid off the
lates otherwise the UE can't maintain a stable connection. All DL and UL
transmission will fail as a consequence.

Try to turn of logs and PCAP writing if this isn't needed. Better to
rely on the stdout output for those kind of tests with low-power HW like
the Jetson.

Cheers
Andre

On 6/2/21 5:43, Jane Zhang wrote:
> Dear srsLTE team
> I run srsenb and srsepc on a machine( Jetson TX2). RF-end is LimeSDR
> USB. Then I use iphone with a programmable card connected to enb.  To
> confirm if it works well,  I use ping on both iphone and epc. It is ok.
> 
> The first test is:
> I did a test. when ue is near enb, when ue open an app to request audio
> from internet. The same as above, the signal became weak. Then the
> connection is broken. Attached the log files.  
> 
> The second test is:
> when ue is near enb ( the distance is 1 meter), it works well.  (command
> ping is ok. it last for a long time)
> when ue becomes far a little (3-4 meters), the connection is unstable. I
> saw the signal became weak. After 1 minute, the connection is broken. 
> 
> My question is how to maintain the connection is stable (without broken).
> 
> Could someone help?  Thank you so much!
> 
> 
> Jane
> 
> 
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