OAI nrUE: PUSCH DMRS STO suddenly got worse when 3rd-party gNB configured 2 NTN cells

Hi @sli

I tested NTN LEO using latest develop branch (2025.w31) with 3rd-party gNB and channel emulator today.

The gNB is configured with 2 NTN cells, but only cell 1 cable is connected, so we can consider no cell 2 signals for nrUE.

But still the SIB19 in cell 1 contains NTN-NeighCellConfig-r17 which contains ntn-Config-r17 and the ephemeris info for cell 2.

After connected to cell 1, I looked at gNB log, the PUSCH DMRS STO suddenly got worse from a few Ts to about 80 Ts after a while, which suggests the TA has some problem?

I also noticed many Decoding SI and Found SIB19 messages in UE log, which is strange, the previous UE log with single cell only has these messages once.

Could you please help check the UE log below:

ntn_2cell_dynamic_delay_doppler_ue_w31.log

Also uploaded gNB RRC messages in pcap format below:

nr_ntn_2cell.pcap

Thanks a lot!