add option sa for sib1 detection in initial sync

executables/nr-ue.c

@@ -221,7 +221,7 @@ static void UE_synch(void *arg) {
       double rx_gain_off = 0;
       nr_get_carrier_frequencies(&UE->frame_parms, &dl_carrier, &ul_carrier);
 
-      if (nr_initial_sync(&syncD->proc, UE, 2) == 0) {
+      if (nr_initial_sync(&syncD->proc, UE, 2, get_softmodem_params()->sa) == 0) {
         freq_offset = UE->common_vars.freq_offset; // frequency offset computed with pss in initial sync
         hw_slot_offset = ((UE->rx_offset<<1) / UE->frame_parms.samples_per_subframe * UE->frame_parms.slots_per_subframe) +
                          round((float)((UE->rx_offset<<1) % UE->frame_parms.samples_per_subframe)/UE->frame_parms.samples_per_slot0);

openair1/PHY/NR_UE_TRANSPORT/nr_initial_sync.c

@@ -202,7 +202,7 @@ int nr_pbch_detection(UE_nr_rxtx_proc_t * proc, PHY_VARS_NR_UE *ue, int pbch_ini
 char duplex_string[2][4] = {"FDD","TDD"};
 char prefix_string[2][9] = {"NORMAL","EXTENDED"};
 
-int nr_initial_sync(UE_nr_rxtx_proc_t *proc, PHY_VARS_NR_UE *ue, int n_frames)
+int nr_initial_sync(UE_nr_rxtx_proc_t *proc, PHY_VARS_NR_UE *ue, int n_frames, int sa)
 {
 
   int32_t sync_pos, sync_pos_frame; // k_ssb, N_ssb_crb, sync_pos2,
@@ -478,6 +478,10 @@ int nr_initial_sync(UE_nr_rxtx_proc_t *proc, PHY_VARS_NR_UE *ue, int n_frames)
 #endif
 #endif
 
+  }
+  // if stand alone and sync on ssb
+  if (sa==1 && ret==0) {
+
   }
 
   //  exit_fun("debug exit");

openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h

@@ -1452,7 +1452,8 @@ void generate_RIV_tables(void);
 */
 int nr_initial_sync(UE_nr_rxtx_proc_t *proc,
                     PHY_VARS_NR_UE *phy_vars_ue, 
-                    int n_frames);
+                    int n_frames,
+                    int sa);
 
 /*!
   \brief This function gets the carrier frequencies either from FP or command-line-set global variables, depending on the availability of the latter

openair1/SIMULATION/NR_PHY/pbchsim.c

@@ -682,7 +682,7 @@ int main(int argc, char **argv)
       }
       if (UE->is_synchronized == 0) {
 	UE_nr_rxtx_proc_t proc={0};
-	ret = nr_initial_sync(&proc, UE, 1);
+	ret = nr_initial_sync(&proc, UE, 1, 0);
 	printf("nr_initial_sync1 returns %d\n",ret);
 	if (ret<0) n_errors++;
       }