Block resources taken by PRACH

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c

@@ -377,6 +377,16 @@ void schedule_nr_prach(module_id_t module_idP, frame_t frameP, sub_frame_t slotP
           }
         }
       }
+
+      // block resources in vrb_map_UL
+      const NR_RACH_ConfigGeneric_t *rach_ConfigGeneric =
+          &scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->rach_ConfigGeneric;
+      const uint8_t mu_pusch =
+          scc->uplinkConfigCommon->frequencyInfoUL->scs_SpecificCarrierList.list.array[0]->subcarrierSpacing;
+      const int16_t N_RA_RB = get_N_RA_RB(cfg->prach_config.prach_sub_c_spacing.value, mu_pusch);
+      uint16_t *vrb_map_UL = &cc->vrb_map_UL[slotP * MAX_BWP_SIZE];
+      for (int i = 0; i < N_RA_RB * fdm; ++i)
+        vrb_map_UL[rach_ConfigGeneric->msg1_FrequencyStart + i] = 0xff; // all symbols
     }
   }
 }