PUSCH data filling from PHY to MAC:

- IP data were fetched and passed to MAC directly at the PHY layer
- random data was generated whenever there's no upcoming data.
- Therefore these functionalities are now moved to MAC and FAPI interfaces
- are used instead.

openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c

@@ -98,7 +98,7 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
                                uint8_t thread_id,
                                int gNB_id) {
 
-  uint32_t available_bits, TBS;
+  uint32_t available_bits;
   uint8_t mod_order, cwd_index, num_of_codewords, l;
   uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
   uint32_t ***pusch_dmrs;
@@ -111,7 +111,6 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
   int ap, start_symbol, Nid_cell, i;
   int sample_offsetF, N_RE_prime, N_PRB_oh;
   uint16_t ul_dmrs_symb_pos;
-  uint8_t data_existing =0;
   uint8_t L_ptrs, K_ptrs; // PTRS parameters
   uint16_t beta_ptrs; // PTRS parameter related to power control
   uint8_t no_data_in_dmrs = 1;
@@ -120,7 +119,6 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
   NR_UL_UE_HARQ_t *harq_process_ul_ue=NULL;
   NR_DL_FRAME_PARMS *frame_parms = &UE->frame_parms;
   NR_UE_PUSCH *pusch_ue = UE->pusch_vars[thread_id][gNB_id];
-  uint8_t ulsch_input_buffer[MAX_ULSCH_PAYLOAD_BYTES];
   // ptrs_UplinkConfig_t *ptrs_Uplink_Config = &UE->pusch_config.dmrs_UplinkConfig.ptrs_UplinkConfig;
 
   num_of_codewords = 1; // tmp assumption
@@ -174,55 +172,6 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
                                              0,
                                              harq_process_ul_ue->pusch_pdu.nrOfLayers);
 
-
-    uint8_t access_mode = SCHEDULED_ACCESS;
-
-    //-----------------------------------------------------//
-    // to be removed later when MAC is ready
-
-    if (harq_process_ul_ue != NULL){
-      TBS = harq_process_ul_ue->pusch_pdu.pusch_data.tb_size;
-      data_existing = 0;
-
-      if (IS_SOFTMODEM_NOS1){
-        data_existing = nr_ue_get_sdu(UE->Mod_id, UE->CC_id, frame,
-          slot, 0, ulsch_input_buffer, TBS/8, &access_mode);
-        //IP traffic to be transmitted
-        if(data_existing){
-          //harq_process_ul_ue->a = (unsigned char*)calloc(TBS/8, sizeof(unsigned char));
-          memcpy(harq_process_ul_ue->a, ulsch_input_buffer, TBS/8);
-        }
-      }
-      //Random traffic to be transmitted if there is no IP traffic available for this Tx opportunity
-      if (!IS_SOFTMODEM_NOS1 || !data_existing) {
-        //Use zeros for the header bytes in noS1 mode, in order to make sure that the LCID is not valid
-        //and block this traffic from being forwarded to the upper layers at the gNB
-        LOG_D(PHY, "Random data to be tranmsitted: \n");
-
-        //Give the first byte a dummy value (a value not corresponding to any valid LCID based on 38.321, Table 6.2.1-2)
-        //in order to distinguish the PHY random packets at the MAC layer of the gNB receiver from the normal packets that should
-        //have a valid LCID (nr_process_mac_pdu function)
-        harq_process_ul_ue->a[0] = 0x31;
-
-        for (i = 1; i < TBS / 8; i++) {
-          harq_process_ul_ue->a[i] = (unsigned char) rand();
-          //printf(" input encoder a[%d]=0x%02x\n",i,harq_process_ul_ue->a[i]);
-        }
-      }
-#ifdef DEBUG_MAC_PDU
-      LOG_I(PHY, "Printing MAC PDU to be encoded, TBS is: %d \n", TBS/8);
-      for (i = 0; i < TBS / 8; i++) {
-        printf("%02x",harq_process_ul_ue->a[i]);
-      }
-      printf("\n");
-#endif
-    } else {
-      LOG_E(PHY, "[phy_procedures_nrUE_TX] harq_process_ul_ue is NULL !!\n");
-      return;
-    }
-
-    //-----------------------------------------------------//
-
     /////////////////////////ULSCH coding/////////////////////////
     ///////////
 
@@ -473,7 +422,6 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
   ///////////
   ////////////////////////////////////////////////////////////////////////
 
-  LOG_D(PHY, "Is data existing ?: %d \n", data_existing);
 }
 
 

openair1/SCHED_NR_UE/fapi_nr_ue_l1.c

@@ -139,12 +139,32 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
           // pusch config pdu
           pusch_config_pdu = &ul_config->ul_config_list[i].pusch_config_pdu;
           current_harq_pid = pusch_config_pdu->pusch_data.harq_process_id;
-          nfapi_nr_ue_pusch_pdu_t *pusch_pdu = &ulsch0->harq_processes[current_harq_pid]->pusch_pdu;
+          NR_UL_UE_HARQ_t *harq_process_ul_ue = ulsch0->harq_processes[current_harq_pid];
 
-          memcpy(pusch_pdu, pusch_config_pdu, sizeof(nfapi_nr_ue_pusch_pdu_t));
+          if (harq_process_ul_ue){
+
+            nfapi_nr_ue_pusch_pdu_t *pusch_pdu = &harq_process_ul_ue->pusch_pdu;
+
+            memcpy(pusch_pdu, pusch_config_pdu, sizeof(nfapi_nr_ue_pusch_pdu_t));
+
+            ulsch0->f_pusch = pusch_config_pdu->absolute_delta_PUSCH;
+
+            if (scheduled_response->tx_request){
+              fapi_nr_tx_request_body_t *tx_req_body = scheduled_response->tx_request->tx_request_body;
+
+              //harq_process_ul_ue->a = (unsigned char*)calloc(TBS/8, sizeof(unsigned char));
+              memcpy(harq_process_ul_ue->a, tx_req_body->pdu, tx_req_body->pdu_length);
+
+              harq_process_ul_ue->status = ACTIVE;
+            }
+
+          } else {
+
+            LOG_E(PHY, "[phy_procedures_nrUE_TX] harq_process_ul_ue is NULL !!\n");
+            return -1;
+
+          }
 
-          ulsch0->f_pusch = pusch_config_pdu->absolute_delta_PUSCH;
-          ulsch0->harq_processes[current_harq_pid]->status = ACTIVE;
         break;
 
         case (FAPI_NR_UL_CONFIG_TYPE_PUCCH):
@@ -206,9 +226,6 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
     } else {
     }
 
-    if (scheduled_response->tx_request != NULL){
-    } else {
-    }
   }
 
   return 0;