[srslte-users] USRP X300:RF getting stopped after few minutes of stack start

[Venu Vennapusa]

Hi Team,

Did anybody see the below "Underflow issue", if yes do we have any work around ?

I have 10G direct cable b/w USRP X300 and Host, hyperthreading disabled, still I see this issue. It is more frequent in case of 2 UEs.Seems like the issue is triggering during UE attach.'

Please let me know if you need any other information.
------DL------------------------------UL----------------------------------
rnti  cqi    ri   mcs  brate   bler   snr   phr   mcs  brate   bler    bsr
46   15.0     0  20.0    776     0%  13.6  40.0 10.00  81.1k     0%    0.0
46   15.0     0  20.0    776     0%  8.33  40.0  3.36  31.1k     0%    0.0
46   15.0     0  20.0    776     0%  7.68  40.0  2.48  25.1k     0%    0.0
46   15.0     0  20.0    776     0%  8.05  40.0  2.88  27.8k     0%    0.0
46   15.0     0  20.0    776     0%  8.22  40.0  3.20  30.0k     0%    0.0
46   8.76     0   0.0   0.0     0%  1.99  40.0  4.00  18.4k    78%    0.0
RF status: O=0, U=1, L=84067
46   4.36     0   0.0   0.0     0%  0.16   0.0  4.00   0.0   100%    0.0


Thanks and Regards,
Venu

From: Venu Vennapusa
Sent: Tuesday, June 11, 2019 7:31 PM
To: srslte-users <srslte-users-bounces at lists.softwareradiosystems.com>
Subject: USRP X300:RF getting stopped after few minutes of stack start

Hi,

I am observing an issue with USRP X300 RF, where the  TX is getting stopped after few minutes of stack start.

Step1: Run "sudo uhd_usrp_probe --args addr=192.168.10.2"   - Success

Step2: Start srslte stack ( sudo srsepc and sudo srsenb, which was working fine with USRP B210 boards) -- Success

After few minutes of running Step4, I see that that the board stopped transmitting (TX/RX RED led goes off ),  lot of ethernet drops have been observed on the interface which is connected to USRP X300.

Did anybody face this issue in the past ? Please have a look and let me know if you find any clue.

Thanks and Regards,
Venu
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