fix on single beam transmission

openair1/PHY/INIT/nr_parms.c

@@ -245,6 +245,9 @@ int nr_init_frame_parms0(NR_DL_FRAME_PARMS *fp,
   else
     fp->Lmax = 64;
 
+  fp->N_ssb = 0;
+  for (int p=0; p<fp->Lmax; p++)
+    fp->N_ssb += ((fp->L_ssb >> p) & 0x01);
 
   return 0;
 }

openair1/PHY/defs_nr_common.h

@@ -319,6 +319,8 @@ typedef struct NR_DL_FRAME_PARMS {
   uint8_t Lmax;
   /// SS block pattern (max 64 ssb, each bit is on/off ssb)
   uint64_t L_ssb;
+  /// Total number of SSB transmitted
+  uint8_t N_ssb;
   /// PBCH polar encoder params
   t_nrPolar_params pbch_polar_params;
 

openair1/SCHED_NR/nr_ru_procedures.c

@@ -252,9 +252,14 @@ void nr_feptx_prec(RU_t *ru,int frame,int tti_tx) {
     
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC , 1);
 
-    memcpy((void*)ru->common.txdataF_BF[0],
-	   (void*)gNB->common_vars.txdataF[0],
-	   fp->samples_per_slot_wCP*sizeof(int32_t));
+    AssertFatal(fp->N_ssb==ru->nb_tx,"Attempting to transmit %d SSB while Nb_tx = %d",fp->N_ssb,ru->nb_tx);
+
+    for (int p=0; p<fp->Lmax; p++) {
+      if ((fp->L_ssb >> p) & 0x01)
+        memcpy((void*)ru->common.txdataF_BF[0],
+	       (void*)gNB->common_vars.txdataF[p],
+	       fp->samples_per_slot_wCP*sizeof(int32_t));
+    }
 
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_PREC , 0);
   }