prevent the scheduler from allocating data on SCell UL if not supported by UE

lib/include/srsran/interfaces/enb_rrc_interface_types.h

@@ -66,6 +66,7 @@ struct cell_cfg_t {
   asn1::rrc::mob_ctrl_info_s::t304_e_ t304;
   std::vector<scell_cfg_t>            scell_list;
   rrc_meas_cfg_t                      meas_cfg;
+  bool                                barred;
 };
 
 typedef std::vector<cell_cfg_t> cell_list_t;

srsenb/hdr/stack/mac/sched_interface.h

@@ -140,6 +140,7 @@ public:
   struct ue_cfg_t {
     struct cc_cfg_t {
       bool            active               = false;
+      bool            ul_disabled          = false;
       uint32_t        enb_cc_idx           = 0; ///< eNB CC index
       srsran_dl_cfg_t dl_cfg               = {};
       uint32_t        aperiodic_cqi_period = 0; // if 0 is periodic CQI

srsenb/src/enb_cfg_parser.cc

@@ -1505,6 +1505,10 @@ static int parse_cell_list(all_args_t* args, rrc_cfg_t* rrc_cfg, Setting& root)
       HANDLEPARSERCODE(parse_meas_report_desc(&cell_cfg.meas_cfg, cellroot));
     }
 
+    if (cellroot.exists("barred") and cellroot["barred"]) {
+      cell_cfg.barred = true;
+    }
+
     if (cellroot.exists("scell_list")) {
       HANDLEPARSERCODE(parse_scell_list(cell_cfg, cellroot));
     }

srsenb/src/stack/mac/schedulers/sched_time_pf.cc

@@ -61,7 +61,10 @@ void sched_time_pf::new_tti(sched_ue_list& ue_db, sf_sched* tti_sched)
       dl_queue.push(&it->second);
     }
     if (it->second.ul_h != nullptr) {
-      ul_queue.push(&it->second);
+      // Allocate only if UL carrier is enabled
+      if (!u.second->get_ue_cfg().supported_cc_list[cc_cfg->enb_cc_idx].ul_disabled) {
+        ul_queue.push(&it->second);
+      }
     }
   }
 }

srsenb/src/stack/mac/schedulers/sched_time_rr.cc

@@ -121,6 +121,10 @@ void sched_time_rr::sched_ul_newtxs(sched_ue_list& ue_db, sf_sched* tti_sched, s
       iter = ue_db.begin(); // wrap around
     }
     sched_ue&           user = *iter->second;
+    // Allocate only if UL carrier is enabled
+    if (user.get_ue_cfg().supported_cc_list[cc_cfg->enb_cc_idx].ul_disabled) {
+      continue;
+    }
     const ul_harq_proc* h    = get_ul_newtx_harq(user, tti_sched);
     // Check if there is a empty harq
     if (h == nullptr) {

srsenb/src/stack/rrc/mac_controller.cc

@@ -457,9 +457,10 @@ void ue_cfg_apply_reconf_complete_updates(ue_cfg_t&                      ue_cfg,
       if (scell.scell_idx_r10 >= ue_cfg.supported_cc_list.size()) {
         ue_cfg.supported_cc_list.resize(scell.scell_idx_r10 + 1);
       }
-      auto& mac_scell      = ue_cfg.supported_cc_list[scell.scell_idx_r10];
+      auto& mac_scell       = ue_cfg.supported_cc_list[scell.scell_idx_r10];
-      mac_scell.active     = true;
+      mac_scell.active      = true;
-      mac_scell.enb_cc_idx = ue_cell_list.get_ue_cc_idx(scell.scell_idx_r10)->cell_common->enb_cc_idx;
+      mac_scell.ul_disabled = !scell.rr_cfg_common_scell_r10.ul_cfg_r10.ul_freq_info_r10.ul_carrier_freq_r10_present;
+      mac_scell.enb_cc_idx  = ue_cell_list.get_ue_cc_idx(scell.scell_idx_r10)->cell_common->enb_cc_idx;
 
       if (scell.rr_cfg_ded_scell_r10_present and scell.rr_cfg_ded_scell_r10.phys_cfg_ded_scell_r10_present and
           scell.rr_cfg_ded_scell_r10.phys_cfg_ded_scell_r10.ul_cfg_r10_present) {

srsenb/src/stack/rrc/rrc_cell_cfg.cc

@@ -44,6 +44,12 @@ enb_cell_common_list::enb_cell_common_list(const rrc_cfg_t& cfg_) : cfg(cfg_)
     // Update DL EARFCN
     new_cell->sib1.freq_band_ind = (uint8_t)srsran_band_get_band(new_cell->cell_cfg.dl_earfcn);
 
+    if (new_cell->cell_cfg.barred) {
+      cell_access->cell_barred.value = sib_type1_s::cell_access_related_info_s_::cell_barred_opts::barred;
+    } else {
+      cell_access->cell_barred.value = sib_type1_s::cell_access_related_info_s_::cell_barred_opts::not_barred;
+    }
+
     // Set Cell SIB2
     // update PRACH root seq index for this cell
     new_cell->sib2                                      = cfg.sibs[1].sib2();