Config for 30Mhz bw on 5G in gnb.yml about docker_open5gs

[herlesupreeth]

Well, if you are planning to use 30mhz BW then only BW config changes. The rest of the changes needed are based on radio head you use i.e. SDR or RU. If its a SDR which one? Based on that sampling rate needs to be set.

NOTE: If you are testing with COTS UE then ensure it supports 30mhz BW. Most phones dont support it when using TDD band

[b3c3ll]

@herlesupreeth
Yup, Its Usrp B210

One other question, is there possible to make VONR call?
i was able to have HD sign on phones but not the Call!

[herlesupreeth]

Ah, then you can set sampling rate in gnb config file as 34.56 (11.52 for 10mhz so its 11.52 * 3). Thats it.

Regarding VoNR calls, unfortunately not yet. The config files required for that is not yet made public by the developer. Will let you know once its out

[b3c3ll]

@herlesupreeth
The PRACH detector will not meet the performance requirements with the configuration {Format B4, ZCZ 0, SCS 30kHz, Rx ports 1}.
PRACH Format B4 with subcarrier spacing of 30kHz is not compatible with 34.56MHz sampling rate.
srsGNB ERROR: Invalid configuration detected

https://www.kamailio.org/docs/modules/5.8.x/modules/ims_qos.html
is this the thing for VONR (5.8.1)?
Thanks
Regards

[herlesupreeth]

For the PRACH error, can you try by setting sampling rate to 46.08?

Regarding the IMS, the link you posted is just one of the many modules used get the IMS working