Set flag to generate PRACH only on PRACH slot

openair1/PHY/defs_nr_UE.h

@@ -1009,8 +1009,6 @@ typedef struct {
   int dlsch_mtch_trials[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
   int current_dlsch_cqi[NUMBER_OF_CONNECTED_eNB_MAX];
   unsigned char first_run_timing_advance[NUMBER_OF_CONNECTED_eNB_MAX];
-  uint8_t               generate_prach;
-  uint8_t               generate_nr_prach;
   uint8_t               prach_cnt;
   uint8_t               prach_PreambleIndex;
   //  uint8_t               prach_timer;

openair1/PHY/defs_nr_common.h

@@ -246,6 +246,8 @@ typedef struct {
   uint16_t ra_RNTI;
   /// Pointer to Msg3 payload for UL-grant
   uint8_t *Msg3;
+  /// Flag for the Msg1 generation
+  uint8_t generate_nr_prach;
 } NR_PRACH_RESOURCES_t;
 
 typedef struct NR_DL_FRAME_PARMS NR_DL_FRAME_PARMS;

openair1/SCHED_NR_UE/phy_procedures_nr_ue.c

@@ -2270,7 +2270,7 @@ void phy_procedures_nrUE_TX(PHY_VARS_NR_UE *ue,
       nr_ue_prach_procedures(ue, proc, gNB_id, mode);
   }
   else {
-    ue->generate_nr_prach = 0;
+    ue->prach_resources[gNB_id]->generate_nr_prach = 0;
   }
 
   LOG_I(PHY,"****** end TX-Chain for AbsSubframe %d.%d ******\n", frame_tx, slot_tx);
@@ -4503,12 +4503,12 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_UE_TX_PRACH, VCD_FUNCTION_IN);
 
-  ue->generate_nr_prach = 0;
   if (ue->mac_enabled == 0){
     //    prach_resources->ra_PreambleIndex = preamble_tx;
     prach_resources->ra_TDD_map_index = 0;
     prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER = 10;
     prach_resources->ra_RNTI = 0x1234;
+    prach_resources->generate_nr_prach = 1;
   } else {
     // ask L2 for RACH transport
     if ((runmode != rx_calib_ue) && (runmode != rx_calib_ue_med) && (runmode != rx_calib_ue_byp) && (runmode != no_L2_connect) ) {
@@ -4523,9 +4523,8 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
     }
   }
 
-  if (ue->prach_resources[gNB_id] != NULL) {
+  if (ue->prach_resources[gNB_id] != NULL && prach_resources->generate_nr_prach == 1) {
 
-    ue->generate_nr_prach = 1;
     ue->prach_cnt = 0;
     pathloss = get_nr_PL(mod_id, ue->CC_id, gNB_id);
     LOG_D(PHY,"runmode %d\n",runmode);
@@ -4534,7 +4533,7 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
       ue->tx_power_dBm[nr_tti_tx] = prach_resources->ra_PREAMBLE_RECEIVED_TARGET_POWER + pathloss;
     }
 
-    LOG_I(PHY,"[UE %d][RAPROC] Frame %d, nr_tti_rx %d : Generating PRACH, preamble %d, PL %d, P0_PRACH %d, TARGET_RECEIVED_POWER %d dBm, RA-RNTI %d\n",
+    LOG_I(PHY,"[UE %d][RAPROC] Frame %d, nr_tti_tx %d : Generating PRACH, preamble %d, PL %d, P0_PRACH %d, TARGET_RECEIVED_POWER %d dBm, RA-RNTI %d\n",
       ue->Mod_id,
       frame_tx,
       nr_tti_tx,
@@ -4555,7 +4554,7 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
     #endif
 
     if ((runmode == calib_prach_tx) && (((proc->frame_tx&0xfffe)%100)==0))
-      LOG_D(PHY,"[UE %d][RAPROC] Frame %d, nr_tti_rx %d : PRACH TX power %d dBm, amp %d\n", ue->Mod_id,
+      LOG_D(PHY,"[UE %d][RAPROC] Frame %d, nr_tti_tx %d : PRACH TX power %d dBm, amp %d (%d)\n", ue->Mod_id,
         proc->frame_rx,
         proc->nr_tti_tx,
         ue->tx_power_dBm[nr_tti_tx],
@@ -4577,7 +4576,7 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
     if (ue->mac_enabled == 1)
       nr_Msg1_transmitted(ue->Mod_id, ue->CC_id, frame_tx, gNB_id);
 
-    LOG_I(PHY,"[UE %d][RAPROC] Frame %d, nr_tti_rx %d: Generating PRACH (gNB %d) preamble index %d for UL, TX power %d dBm (PL %d dB) \n",
+    LOG_I(PHY,"[UE %d][RAPROC] Frame %d, nr_tti_tx %d: Generating PRACH (gNB %d) preamble index %d for UL, TX power %d dBm (PL %d dB) \n",
       ue->Mod_id,
       frame_tx,
       nr_tti_tx,
@@ -4591,12 +4590,12 @@ void nr_ue_prach_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
   if (runmode == calib_prach_tx)
     ue->prach_resources[gNB_id] = NULL;
 
-  LOG_D(PHY,"[UE %d] frame %d nr_tti_rx %d : generate_nr_prach %d, prach_cnt %d\n", ue->Mod_id,frame_tx,nr_tti_tx, ue->generate_nr_prach, ue->prach_cnt);
+  LOG_D(PHY,"[UE %d] frame %d nr_tti_tx %d : generate_nr_prach %d, prach_cnt %d\n", ue->Mod_id, frame_tx, nr_tti_tx, ue->prach_resources[gNB_id]->generate_nr_prach, ue->prach_cnt);
 
   ue->prach_cnt++;
 
   if (ue->prach_cnt == 3)
-    ue->generate_nr_prach = 0;
+    prach_resources->generate_nr_prach = 0;
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_UE_TX_PRACH, VCD_FUNCTION_OUT);
 }

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c

@@ -906,12 +906,23 @@ int get_nr_prach_info_from_index(uint8_t index,
           if ( (table_6_3_3_2_4_prachConfig_Index[index][7] == 1) && (slot%2 == 0) )
             return 0; // no prach in even slots @ 120kHz for 1 prach per 60khz slot
         }
+        if (start_symbol != NULL && N_t_slot != NULL && N_dur != NULL && format != NULL){
           *start_symbol = table_6_3_3_2_4_prachConfig_Index[index][6];
           *N_t_slot = table_6_3_3_2_4_prachConfig_Index[index][8];
           *N_dur = table_6_3_3_2_4_prachConfig_Index[index][9];
           if (table_6_3_3_2_4_prachConfig_Index[index][1] != -1)
             format2 = (uint8_t) table_6_3_3_2_4_prachConfig_Index[index][1];
           *format = ((uint8_t) table_6_3_3_2_4_prachConfig_Index[index][0]) | (format2<<8);
+          LOG_D(MAC,"Frame %d slot %d: Getting PRACH info from index %d absoluteFrequencyPointA %u mu %u frame_type %u start_symbol %u N_t_slot %u N_dur %u \n", frame,
+            slot,
+            index,
+            pointa,
+            mu,
+            unpaired,
+            *start_symbol,
+            *N_t_slot,
+            *N_dur);
+        }
         return 1;
       }
       else
@@ -933,12 +944,23 @@ int get_nr_prach_info_from_index(uint8_t index,
             if ( (table_6_3_3_2_3_prachConfig_Index[index][6] == 1) && (slot%2 == 0) )
               return 0; // no prach in even slots @ 30kHz for 1 prach per subframe
           }
+          if (start_symbol != NULL && N_t_slot != NULL && N_dur != NULL && format != NULL){
             *start_symbol = table_6_3_3_2_3_prachConfig_Index[index][5];
             *N_t_slot = table_6_3_3_2_3_prachConfig_Index[index][7];
             *N_dur = table_6_3_3_2_3_prachConfig_Index[index][8];
             if (table_6_3_3_2_3_prachConfig_Index[index][1] != -1)
               format2 = (uint8_t) table_6_3_3_2_3_prachConfig_Index[index][1];
             *format = ((uint8_t) table_6_3_3_2_3_prachConfig_Index[index][0]) | (format2<<8);
+            LOG_D(MAC,"Frame %d slot %d: Getting PRACH info from index %d absoluteFrequencyPointA %u mu %u frame_type %u start_symbol %u N_t_slot %u N_dur %u \n", frame,
+              slot,
+              index,
+              pointa,
+              mu,
+              unpaired,
+              *start_symbol,
+              *N_t_slot,
+              *N_dur);
+          }
           return 1;
         }
         else
@@ -958,12 +980,23 @@ int get_nr_prach_info_from_index(uint8_t index,
             if ( (table_6_3_3_2_2_prachConfig_Index[index][6] == 1) && (slot%2 == 0) )
               return 0; // no prach in even slots @ 30kHz for 1 prach per subframe
           }
+          if (start_symbol != NULL && N_t_slot != NULL && N_dur != NULL && format != NULL){
             *start_symbol = table_6_3_3_2_2_prachConfig_Index[index][5];
             *N_t_slot = table_6_3_3_2_2_prachConfig_Index[index][7];
             *N_dur = table_6_3_3_2_2_prachConfig_Index[index][8];
             if (table_6_3_3_2_2_prachConfig_Index[index][1] != -1)
               format2 = (uint8_t) table_6_3_3_2_2_prachConfig_Index[index][1];
             *format = ((uint8_t) table_6_3_3_2_2_prachConfig_Index[index][0]) | (format2<<8);
+            LOG_D(MAC,"Frame %d slot %d: Getting PRACH info from index %d absoluteFrequencyPointA %u mu %u frame_type %u start_symbol %u N_t_slot %u N_dur %u \n", frame,
+              slot,
+              index,
+              pointa,
+              mu,
+              unpaired,
+              *start_symbol,
+              *N_t_slot,
+              *N_dur);
+          }
           return 1;
         }
         else
@@ -1039,6 +1072,7 @@ uint8_t compute_nr_root_seq(NR_RACH_ConfigCommon_t *rach_config,
     if (NCS == 0) return nb_preambles;
     else {
       r = L_ra/NCS;
+      printf(" found_sequences %u\n", (nb_preambles/r));
       return (nb_preambles/r);
     }
   }
@@ -1076,6 +1110,7 @@ uint8_t compute_nr_root_seq(NR_RACH_ConfigCommon_t *rach_config,
         AssertFatal(1==0,"Procedure to find nb of sequences for restricted type B not implemented yet");
       }
     }
+    printf(" found_sequences %u\n", found_sequences);
     return found_sequences;
   }
 }

openair2/LAYER2/NR_MAC_UE/nr_ra_procedures.c

@@ -333,11 +333,15 @@ void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
 
   NR_UE_MAC_INST_t *mac = get_mac_inst(mod_id);
   uint8_t lcid = UL_SCH_LCID_CCCH_MSG3, *mac_sdus, *payload, ra_ResponseWindow;
+  uint8_t config_index, mu;
+  int is_nr_prach_slot;
   uint16_t size_sdu = 0;
   unsigned short post_padding;
+  fapi_nr_config_request_t *cfg = &mac->phy_config.config_req;
   NR_ServingCellConfigCommon_t *scc = mac->scc;
   NR_RACH_ConfigCommon_t *setup = scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup;
   NR_RACH_ConfigGeneric_t *rach_ConfigGeneric = &setup->rach_ConfigGeneric;
+  NR_FrequencyInfoDL_t *frequencyInfoDL = scc->downlinkConfigCommon->frequencyInfoDL;
   // int32_t frame_diff = 0;
 
   uint8_t sdu_lcids[NB_RB_MAX] = {0};
@@ -350,6 +354,27 @@ void nr_ue_get_rach(NR_PRACH_RESOURCES_t *prach_resources,
 
     LOG_D(MAC, "nr_ue_get_rach, RA_active value: %d", mac->RA_active);
 
+    config_index = rach_ConfigGeneric->prach_ConfigurationIndex;
+    if (setup->msg1_SubcarrierSpacing)
+      mu = *setup->msg1_SubcarrierSpacing;
+    else
+      mu = frequencyInfoDL->scs_SpecificCarrierList.list.array[0]->subcarrierSpacing;
+
+    is_nr_prach_slot = get_nr_prach_info_from_index(config_index,
+                                                    (int)frame,
+                                                    (int)nr_tti_tx,
+                                                    frequencyInfoDL->absoluteFrequencyPointA,
+                                                    mu,
+                                                    cfg->cell_config.frame_duplex_type,
+                                                    NULL,
+                                                    NULL,
+                                                    NULL,
+                                                    NULL);
+    if (is_nr_prach_slot)
+      prach_resources->generate_nr_prach = 1;
+    else
+      prach_resources->generate_nr_prach = 0;
+
     AssertFatal(setup != NULL, "[UE %d] FATAL  nr_rach_ConfigCommon is NULL !!!\n", mod_id);
 
     if (mac->RA_active == 0) {