Support for PUSCH config requests for multiple UL slots

openair2/LAYER2/NR_MAC_UE/mac_defs.h

@@ -247,7 +247,7 @@ typedef struct {
   uint8_t generate_nr_prach;
 
   ////	FAPI-like interface message
-  fapi_nr_ul_config_request_t ul_config_request;
+  fapi_nr_ul_config_request_t *ul_config_request;
   fapi_nr_dl_config_request_t dl_config_request;
 
   ///     Interface module instances

openair2/LAYER2/NR_MAC_UE/main_ue_nr.c

@@ -62,6 +62,17 @@ NR_UE_MAC_INST_t * nr_l2_init_ue(NR_UE_RRC_INST_t* rrc_inst)
     	  pdcp_layer_init();
     	  nr_DRB_preconfiguration();
       }
+
+      // Allocate memory for ul_config_request in the mac instance. This is now a pointer and will
+      // point to a list of structures (one for each UL slot) to store PUSCH scheduling parameters
+      // received from UL DCI.
+      if (nr_ue_mac_inst->scc) {
+        int num_slots_ul = nr_ue_mac_inst->scc->tdd_UL_DL_ConfigurationCommon->pattern1.nrofUplinkSlots;
+        if (nr_ue_mac_inst->scc->tdd_UL_DL_ConfigurationCommon->pattern1.nrofUplinkSymbols>0)
+          num_slots_ul++;
+        LOG_D(MAC, "Initializing ul_config_request. num_slots_ul = %d\n", num_slots_ul);
+        nr_ue_mac_inst->ul_config_request = (fapi_nr_ul_config_request_t *)calloc(num_slots_ul, sizeof(fapi_nr_ul_config_request_t));
+      }
     }
     else LOG_I(MAC,"Running without RRC instance\n");
 

openair2/NR_UE_PHY_INTERFACE/NR_IF_Module.c

@@ -135,7 +135,7 @@ int nr_ue_dl_indication(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_
   module_id_t module_id = dl_info->module_id;
   NR_UE_MAC_INST_t *mac = get_mac_inst(module_id);
   fapi_nr_dl_config_request_t *dl_config = &mac->dl_config_request;
-  fapi_nr_ul_config_request_t *ul_config = &mac->ul_config_request;
+  fapi_nr_ul_config_request_t *ul_config = &mac->ul_config_request[1];  // Temporary workaround
 
   if (!dl_info->dci_ind && !dl_info->rx_ind) {
     // UL indication to schedule DCI reception