5G NSA: cell configuration for Band n78

[MKSBarbosa]

Hello everyone, how are you?

I’m trying to deploy 5G NSA using the USRP N310 for UHD 3.15. I ran some tests using band 3, and in this case, the software ran normally; however, the phones I have available for testing don’t connect to this band. So, I tried switching to band 78 and encountered this error:

srsenb  | Built in Release mode using commit ec29b0c1f on branch HEAD.
srsenb  | 
srsenb  | ERROR: Coreset0 index=7 is not compatible with DL ARFCN 634240 in band 78
srsenb  | 
srsenb  | ERROR: Deriving SSB parameters
srsenb  | 
srsenb  | /srsRAN_4G/srsenb/src/enb_cfg_parser.cc:2171: Failed to derive NR cell params.
srsenb  | Error deriving NR cell parameters
srsenb  | Error processing arguments.

I tried changing the index to different values:

nr_cell_list =
(
  {
    rf_port = 1;
    cell_id = 0x02;
    tac = 0x0001;
    pci = 1;
    root_seq_idx = 204;
    coreset0_idx = 10;

    // TDD:
    dl_arfcn = 632628;
    band = 78;
  }
);

However, I keep getting other errors:

srsenb  | Built in Release mode using commit ec29b0c1f on branch HEAD.
srsenb  | 
srsenb  | /srsRAN_4G/lib/src/phy/common/phy_common_nr.c:704: Reserved case ssb_scs=30kHz, pdcch_scs=15kHz, idx=10
srsenb  | ERROR: Deriving parameters for coreset0: index=10, ssb_pointA_offset=4860 kHz
srsenb  | 
srsenb  | ERROR: Deriving SSB parameters
srsenb  | 
srsenb  | /srsRAN_4G/srsenb/src/enb_cfg_parser.cc:2171: Failed to derive NR cell params.
srsenb  | Error deriving NR cell parameters
srsenb  | Error processing arguments.

I found an issue from 2022 (#975) where it was reported that there was no support for TDD bands. Has this been added, or is it still an open problem?