UE could not detect SSB/MIB with 30MHz or 15 MHz cell , anyone try this option?

[liaiguo99]

UE could not detect SSB/MIB with 30MHz or 15 MHz cell although 30MHz and 15MHz could be configured at n28.
Our environment use SDR USRP.
And we do not observe issue with 100MHz configuration.

[robertfalkenberg]

I've successfully checked bandwidths {10,15,20,30}MHz with USRP B210 and Telit FN990A28 modem.

Perhaps your device does not support those bandwidths? You can check the UE capabilities from MAC pcap:

For example, the Telit does not support 25MHz.

[liaiguo99]

Thanks Robert's quick reply.
Our issue is that COTS UE could not search and detect SSB/MIB if we configure 15MHz/30MHz. But UEs successfully search/detect and also attach to srsRAN gNB with 10MHz and 20MHz and successful throughput. We check the UE capability report and do not observe any issue until now, we will further check both direction.
We doubt the issue probably is because srsRAN stack do not calculate central frequency ( or SSB ARFCN ) according to 3GPP spec?

We also observe other issues with 2/4 ports NZP CSI-RS support, SSB "ssb-PositionInBurst" configuration and "PUSCH DMRS group without data" issues.
Do you know whether commercial release ( or enterprise release) have more features or better support? We'd like to know what is the features list for commercial/enterprise release. Appreciate your help!