[srslte-users] Radio link failure with srsLTE on Nvidia Jetson TX2

[Xavier Arteaga]

Hi Sabur,
If I am not wrong, some ARM issues have been resolved in release 18.12. I
encourage you to try it. What errors do you have?

First of all, could you try to run a UHD benchmark?
(
https://kb.ettus.com/Verifying_the_Operation_of_the_USRP_Using_UHD_and_GNU_Radio#Benchmarking_your_system
).

You need to check simultaneous tx and rx. You will make sure the USRP
driver is not being a bottleneck.

Once you benchmarked UHD, you should benchmark srslte by running:
lib/src/phy/phch/test/pdsch_test -x single -m 28 -n 6
lib/src/phy/phch/test/pdsch_test -x single -m 28 -n 15
lib/src/phy/phch/test/pdsch_test -x single -m 28 -n 25
lib/src/phy/phch/test/pdsch_test -x single -m 28 -n 50
lib/src/phy/phch/test/pdsch_test -x single -m 28 -n 75
lib/src/phy/phch/test/pdsch_test -x single -m 28 -n 100
These commands measure CPU maximum throughput decoding for 6, 15, 25, 50,
75 and 100 PRB. You might not be able to attach to a cell if the processing
bit rate is lower than PHY bit rate.

Let me know how it goes.

Regards,
Xavier

On Thu, 31 Jan 2019 at 20:21, Sabur Hassan Baidya <sbaidya at uci.edu> wrote:

> Hi,
>
> I was trying to test the srsLTE on NVIDIA Jetson TX2 board with USRP B210
> radio interface. However, I have problems in installing the latest version
> of srsLTE and could not successfully install. As suggested in some thread
> that the latest version has some problems with ARM processors, I tried
> with  srsLTE-release_18_03_1 version and was able to successfully install
> on the Jetson board.
>
> However, when I start the EPC and ENB, I see only the TX radio active
> (with red light on) but not the RX. Then when I try to start a srsUE from
> another board, it does not connect as it does Random Access Transmission
> and occasionally prints : "Warning: Detected Radio-Link Failure". I tried
> disconnecting USRP and reconnecting but got same errors.
>
> But the same srsUE (on same board) works with a srsENB which runs on
> laptop running ubuntu and latest srsLTE code. On the laptop when I run EPC
> and ENB code, I can see both the TX and RX radio active with red and green
> lights on the USRP.
>
> Did someone try srsLTE on Jetson board and made it work successfully? Can
> someone please guide me to find out the problem and resolve.
>
> Thanks & Regards,
> Sabur
>
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