Updated for multiple UEs CBRA procedure.

1. Added rnti filter for multiple UEs.
2. Adjusted mode offset for SA mode.

executables/nr-ue.c

@@ -492,6 +492,12 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
       nr_ue_ul_indication(&ul_info);
       check_nr_prach(mac, &ul_info, &prach_resources);
     }
+    if(IS_SOFTMODEM_NOS1 || get_softmodem_params()->sa) {
+      NR_UE_MAC_INST_t *mac = get_mac_inst(0);
+      protocol_ctxt_t ctxt;
+      PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, 0, ENB_FLAG_NO, mac->crnti, frame, slot, 0);
+      pdcp_run(&ctxt);
+    }
     process_queued_nr_nfapi_msgs(mac, sfn_slot);
     free(slot_ind);
     slot_ind = NULL;

executables/nr-uesoftmodem.c

@@ -458,7 +458,7 @@ int main( int argc, char **argv ) {
 
   init_NR_UE(1,rrc_config_path);
 
-  int mode_offset = get_softmodem_params()->nsa ? NUMBER_OF_UE_MAX : 0;
+  int mode_offset = get_softmodem_params()->nsa ? NUMBER_OF_UE_MAX : 1;
   uint16_t node_number = get_softmodem_params()->node_number;
   ue_id_g = (node_number == 0) ? 0 : node_number - 2;
   AssertFatal(ue_id_g >= 0, "UE id is expected to be nonnegative.\n");

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -599,6 +599,15 @@ int nr_ue_process_dci_indication_pdu(module_id_t module_id,int cc_id, int gNB_in
   NR_UE_MAC_INST_t *mac = get_mac_inst(module_id);
   dci_pdu_rel15_t *def_dci_pdu_rel15 = &mac->def_dci_pdu_rel15[dci->dci_format];
 
+  if (get_softmodem_params()->sa) {
+    if (((dci->rnti != 0xFFFF) && (mac->ra.ra_state <= GENERATE_PREAMBLE)) ||
+        ((dci->rnti != 0x10b) && (mac->ra.ra_state == WAIT_RAR)) ||
+        ((dci->rnti != mac->ra.t_crnti ) && (mac->ra.ra_state == WAIT_CONTENTION_RESOLUTION)) ||
+        ((dci->rnti != mac->crnti ) && (mac->ra.ra_state == RA_SUCCEEDED))) {
+      return -1;
+    }
+  }
+
   LOG_D(MAC,"Received dci indication (rnti %x,dci format %d,n_CCE %d,payloadSize %d,payload %llx)\n",
 	dci->rnti,dci->dci_format,dci->n_CCE,dci->payloadSize,*(unsigned long long*)dci->payloadBits);
   int8_t ret = nr_extract_dci_info(mac, dci->dci_format, dci->payloadSize, dci->rnti, (uint64_t *)dci->payloadBits, def_dci_pdu_rel15);
@@ -3795,6 +3804,11 @@ int nr_ue_process_rar(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t
 
   LOG_D(NR_MAC, "In %s:[%d.%d]: [UE %d][RAPROC] invoking MAC for received RAR (current preamble %d)\n", __FUNCTION__, frame, slot, mod_id, preamble_index);
 
+  if (ra->RA_RAPID_found == 1)
+  {
+    return -1;
+  }
+
   while (1) {
     n_subheaders++;
     if (rarh->T == 1) {

openair2/NR_UE_PHY_INTERFACE/NR_IF_Module.c

@@ -278,6 +278,12 @@ static bool is_my_dci(NR_UE_MAC_INST_t *mac, nfapi_nr_dl_dci_pdu_t *received_pdu
     {
         if (received_pdu->RNTI != mac->crnti && mac->ra.ra_state == RA_SUCCEEDED)
             return false;
+        if (received_pdu->RNTI != mac->ra.t_crnti && mac->ra.ra_state == WAIT_CONTENTION_RESOLUTION)
+            return false;
+        if (received_pdu->RNTI != 0x10b && mac->ra.ra_state == WAIT_RAR)
+            return false;
+        if (received_pdu->RNTI != 0xFFFF && mac->ra.ra_state <= GENERATE_PREAMBLE)
+            return false;
     }
     return true;
 }
@@ -316,7 +322,10 @@ static void copy_dl_tti_req_to_dl_info(nr_downlink_indication_t *dl_info, nfapi_
             uint16_t num_dcis = pdu_list->pdcch_pdu.pdcch_pdu_rel15.numDlDci;
             if (num_dcis > 0)
             {
-                dl_info->dci_ind = CALLOC(1, sizeof(fapi_nr_dci_indication_t));
+                if (!dl_info->dci_ind && !pdu_idx)
+                {
+                  dl_info->dci_ind = CALLOC(1, sizeof(fapi_nr_dci_indication_t));
+                }
                 dl_info->dci_ind->SFN = dl_tti_request->SFN;
                 dl_info->dci_ind->slot = dl_tti_request->Slot;
                 AssertFatal(num_dcis < sizeof(dl_info->dci_ind->dci_list) / sizeof(dl_info->dci_ind->dci_list[0]),
@@ -1044,6 +1053,10 @@ int nr_ue_dl_indication(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_
                                 dl_info->dci_ind->dci_list+i);
 
         fapi_nr_dci_indication_pdu_t *dci_index = dl_info->dci_ind->dci_list+i;
+        if (dci_index->dci_format == 7 && mac->ra.ra_state == RA_SUCCEEDED) {
+          LOG_D(NR_MAC, "We are filtering a UL_DCI to prevent it from being treated like a DL_DCI\n");
+          break;
+        }
         dci_pdu_rel15_t *def_dci_pdu_rel15 = &mac->def_dci_pdu_rel15[dci_index->dci_format];
         g_harq_pid = def_dci_pdu_rel15->harq_pid;
         LOG_D(NR_MAC, "Setting harq_pid = %d and dci_index = %d (based on format)\n", g_harq_pid, dci_index->dci_format);