[srsran-users] UE can't use band 20 in 5G SA mode

[wyhdll at 126.com]

[rat.eutra]
dl_earfcn = 2850
nof_carriers = 0 
[rat.nr]
bands = 20
nof_carriers = 1    // this value should be set zero，  to  enter SA mode ,as follow:

if (args.phy.nof_lte_carriers == 0) {
    // SA mode
std::unique_ptr<srsue::phy_nr_sa> nr_phy = std::unique_ptr<srsue::phy_nr_sa>(new srsue::phy_nr_sa("PHY-SA"));
    if (!nr_phy) {
      srsran::console("Error creating NR PHY instance.\n");
      return SRSRAN_ERROR;
    }

    // In SA mode, pass the NR SA phy to the radio
    if (lte_radio->init(args.rf, nr_phy.get())) {
      srsran::console("Error initializing radio.\n");
      return SRSRAN_ERROR;
    }
    if (nr_phy->init(phy_args_nr, lte_stack.get(), lte_radio.get())) {
      srsran::console("Error initializing PHY NR SA.\n");
      ret = SRSRAN_ERROR;
    }

    std::unique_ptr<srsue::dummy_phy> dummy_lte_phy = std::unique_ptr<srsue::dummy_phy>(new srsue::dummy_phy);
    if (!dummy_lte_phy) {
      srsran::console("Error creating dummy LTE PHY instance.\n");
      return SRSRAN_ERROR;
    }

    // In SA mode, pass NR PHY pointer to stack
    args.stack.sa_mode = true;
    if (lte_stack->init(args.stack, dummy_lte_phy.get(), nr_phy.get(), gw_ptr.get())) {
      srsran::console("Error initializing stack.\n");
      ret = SRSRAN_ERROR;
    }
    phy       = std::move(nr_phy);
    dummy_phy = std::move(dummy_lte_phy);
  } else {
    // LTE or NSA mode






wyhdll at 126.com
 
From: Seonwoo Lee
Date: 2022-06-06 22:00
To: srsran-users
Subject: [srsran-users] UE can't use band 20 in 5G SA mode
Hi everyone. I'm trying to use the latest srsRAN release that supports 5G in SA mode. I've been following the guide at https://docs.srsran.com/en/latest/app_notes/source/5g_sa_E2E/source/index.html. I want to use band 20, and I have been successful in tuning the gNB to band 20 by changing the rr.conf. But when I try to tell the UE to band 20, it just ignores it, and uses the default band 3 instead. I've got the following in ue.conf:

[rat.eutra]
dl_earfcn = 2850
nof_carriers = 0 
[rat.nr]
bands = 20
nof_carriers = 1 

Does anybody know why the UE ignores the band specified?
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