Payload check in pbchsim

openair1/PHY/NR_TRANSPORT/nr_pbch.c

@@ -277,7 +277,8 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
   else
     pbch->pbch_a |= ((config->sch_config.ssb_subcarrier_offset.value>>4)&1)<<29; //MSB of k_SSB (bit index 4)
 
-  LOG_I(PHY,"After extra byte: pbch_a = 0x%08x\n",pbch->pbch_a);
+  //LOG_I(PHY,"After extra byte: pbch_a = 0x%08x\n",pbch->pbch_a);
+  printf("After extra byte: pbch_a = 0x%08x\n",pbch->pbch_a);
 
     // Payload interleaving
   

openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c

@@ -36,7 +36,7 @@
 #include "PHY/LTE_REFSIG/lte_refsig.h"
 
 //#define DEBUG_PBCH 1
-#define DEBUG_PBCH_ENCODING
+//#define DEBUG_PBCH_ENCODING
 
 #ifdef OPENAIR2
 //#include "PHY_INTERFACE/defs.h"
@@ -508,7 +508,7 @@ unsigned char sign(int8_t x) {
 }
 */
 
-uint8_t pbch_deinterleaving_pattern[32] = {28,0,31,30,7,29,25,27,5,8,24,9,10,11,12,13,1,4,3,14,15,16,17,2,26,18,19,20,21,22,30,23};
+uint8_t pbch_deinterleaving_pattern[32] = {28,0,31,30,7,29,25,27,5,8,24,9,10,11,12,13,1,4,3,14,15,16,17,2,26,18,19,20,21,22,6,23};
 
 int nr_rx_pbch( PHY_VARS_NR_UE *ue,
 		UE_nr_rxtx_proc_t *proc,
@@ -673,16 +673,15 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
   M = (Lmax == 64)? (NR_POLAR_PBCH_PAYLOAD_BITS - 6) : (NR_POLAR_PBCH_PAYLOAD_BITS - 3);
   nushift = ((nr_ue_pbch_vars->pbch_a_prime>>24)&1) ^ (((nr_ue_pbch_vars->pbch_a_prime>>6)&1)<<1);
   nr_pbch_unscrambling(nr_ue_pbch_vars,frame_parms->Nid_cell,nushift,M,NR_POLAR_PBCH_PAYLOAD_BITS,1,unscrambling_mask);
-  printf("nushift %d sfn 3rd %d 2nd %d\n", nushift,((nr_ue_pbch_vars->pbch_a_prime>>6)&1), ((nr_ue_pbch_vars->pbch_a_prime>>24)&1) );
 
   //payload deinterleaving
   //uint32_t in=0;
   uint32_t out=0;
   for (int i=0; i<32; i++) {
     out |= ((nr_ue_pbch_vars->pbch_a_interleaved>>i)&1)<<(pbch_deinterleaving_pattern[i]);
-#ifdef DEBUG_PBCH
+//#ifdef DEBUG_PBCH
     printf("i %d in 0x%08x out 0x%08x ilv %d (in>>i)&1) 0x%08x\n", i, nr_ue_pbch_vars->pbch_a_interleaved, out, pbch_deinterleaving_pattern[i], (nr_ue_pbch_vars->pbch_a_interleaved>>i)&1);
-#endif
+//#endif
   }
 
  uint32_t payload = 0;

openair1/SIMULATION/NR_PHY/pbchsim.c

@@ -122,13 +122,13 @@ int main(int argc, char **argv)
   unsigned char frame_type = 0;
   unsigned char pbch_phase = 0;
 
-  int frame=0,subframe=0;
+  int frame=8,subframe=0;
   int frame_length_complex_samples;
   int frame_length_complex_samples_no_prefix;
   NR_DL_FRAME_PARMS *frame_parms;
   nfapi_nr_config_request_t *gNB_config;
 
-  int ret;
+  int ret, payload_ret=0;
   int run_initial_sync=0;
 
   int loglvl=OAILOG_WARNING;
@@ -570,9 +570,17 @@ int main(int argc, char **argv)
 	if (ret==0) {
 	  //UE->rx_ind.rx_indication_body->mib_pdu.ssb_index;  //not yet detected automatically
 	  //UE->rx_ind.rx_indication_body->mib_pdu.ssb_length; //Lmax, not yet detected automatically
-	  for (i=0;i<3;i++)
-	    printf("pdu byte %d gNB: 0x%02x UE: 0x%02x\n",i,((uint8_t*)&gNB->pbch.pbch_a)[i], UE->rx_ind.rx_indication_body->mib_pdu.pdu[i]);  
-	  printf("xtra byte gNB: 0x%02x UE: 0x%02x\n",((uint8_t*)&gNB->pbch.pbch_a)[3], UE->rx_ind.rx_indication_body->mib_pdu.additional_bits);
+    uint8_t gNB_xtra_byte=0;
+    for (int i=0; i<8; i++)
+      gNB_xtra_byte |= ((gNB->pbch.pbch_a>>(31-i))&1)<<(7-i);
+
+    payload_ret += (UE->rx_ind.rx_indication_body->mib_pdu.additional_bits == gNB_xtra_byte);
+	  for (i=0;i<3;i++){
+      payload_ret += (UE->rx_ind.rx_indication_body->mib_pdu.pdu[i] == gNB->pbch_pdu[2-i]);
+      //printf("pdu byte %d gNB: 0x%02x UE: 0x%02x\n",i,gNB->pbch_pdu[i], UE->rx_ind.rx_indication_body->mib_pdu.pdu[i]); 
+      } 
+	  //printf("xtra byte gNB: 0x%02x UE: 0x%02x\n",gNB_xtra_byte, UE->rx_ind.rx_indication_body->mib_pdu.additional_bits);
+    //printf("ret %d\n", payload_ret);
 	}
 
 	if (ret<0) n_errors++;
@@ -582,7 +590,12 @@ int main(int argc, char **argv)
     printf("SNR %f : n_errors (negative CRC) = %d/%d\n", SNR,n_errors,n_trials);
 
     if ((float)n_errors/(float)n_trials <= target_error_rate) {
+      if (payload_ret==4) {
+        printf("Payload OK\n");
         printf("PBCH test OK\n");
+      }
+      else
+        printf("Payload NOK\n");
       break;
     }