srsUE TDD

[improperaffo]

Dear all,
We are trying to use srsUE for testing the latency of our setup. We are mainly interested in band 78 (TDD), we know srsUE does not support 30 kHz scs and band 78 does not currently support 15 kHz scs, so we tried using band 41, yet we were not able to connect the UE to the gNB either.

Has anyone successfully connected srsUE to srs gNB in TDD mode?

Thanks

[herlesupreeth]

band 41 is also TDD and mainly 30khz SCS and srsUE does not support TDD in 5G SA

[rainey19]

I've used N41 with srsUE before, but only using ZMQ. Give me an hour or two and I can let you know how it works over RF.

[improperaffo]

Thank you. We are interested on ZMQ for now, could you share which configuration options you used?

[rainey19]

I've attached the configs I used.

Just realized it requires a code change. In the file lib/src/phy/common/phy_common_nr.c, make the change as follows

It's probably not the best way to make this change, but it will at least get you as far as msg3 in the RA procedure.

n41 configs.zip

[sachin4904]

Did this work with ZMQ? it got stuck at msg3 for me. @rainey19 @improperaffo

[pgawlowicz]

srsUE does not support TDD