parallel architecture of 5G NR

cmake_targets/build_oai

@@ -661,7 +661,8 @@ function main() {
   if [ "$SIMUS_PHY" = "1" ] ; then
     echo_info "Compiling physical unitary tests simulators"
     # TODO: fix: dlsim_tm4 pucchsim prachsim pdcchsim pbchsim mbmssim
-    simlist="dlsim ulsim ldpctest polartest smallblocktest nr_pbchsim nr_dlschsim nr_ulschsim nr_dlsim nr_ulsim nr_pucchsim"
+	simlist="nr_dlsim "
+    #simlist="dlsim ulsim ldpctest polartest smallblocktest nr_pbchsim nr_dlschsim nr_ulschsim nr_dlsim nr_ulsim nr_pucchsim"
     for f in $simlist ; do
       compilations \
         phy_simulators $f \

openair1/PHY/NR_TRANSPORT/nr_dlsch.c

@@ -37,7 +37,7 @@
 #include "nr_dci.h"
 #include "nr_sch_dmrs.h"
 #include "PHY/MODULATION/nr_modulation.h"
-
+#define thread_for_scrambling_modulation
 //#define DEBUG_DLSCH
 //#define DEBUG_DLSCH_MAPPING
 
@@ -88,20 +88,23 @@ uint8_t nr_generate_pdsch(NR_gNB_DLSCH_t *dlsch,
   PHY_VARS_gNB *gNB = RC.gNB[0][0];
   NR_DL_gNB_HARQ_t *harq = dlsch->harq_processes[dci_alloc->harq_pid];
   nfapi_nr_dl_config_dlsch_pdu_rel15_t *rel15 = &harq->dlsch_pdu.dlsch_pdu_rel15;
-  //nfapi_nr_dl_config_pdcch_parameters_rel15_t pdcch_params = dci_alloc->pdcch_params;
-  //uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
+  nfapi_nr_dl_config_pdcch_parameters_rel15_t pdcch_params = dci_alloc->pdcch_params;
+  uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
   int16_t **mod_symbs = (int16_t**)dlsch->mod_symbs;
   int16_t **tx_layers = (int16_t**)dlsch->txdataF;
   int8_t Wf[2], Wt[2], l0, l_prime[2], delta;
   uint16_t nb_symbols = rel15->nb_mod_symbols;
-  //uint8_t Qm = rel15->modulation_order;
-  //uint32_t encoded_length = nb_symbols*Qm;
-  //printf("encoded_length = %d\n",encoded_length);
+  struct timespec tt1, tt2, tt3, tt4, tt5;
+  uint8_t Qm = rel15->modulation_order;
+  uint32_t encoded_length = nb_symbols*Qm;
+  gNB->complete_scrambling_and_modulation = 0;
   gNB->complete_scrambling = 0;
   gNB->complete_modulation = 0;
-  for(int q = 0 ;q<13;q++){
+  /*
+  for(int q = 0 ;q<NR_MAX_NB_CODEWORDS;q++){
 	gNB->q_scrambling[q] = 0;
   }
+  */
   /// CRC, coding, interleaving and rate matching
   AssertFatal(harq->pdu!=NULL,"harq->pdu is null\n");
   start_meas(dlsch_encoding_stats);
@@ -123,16 +126,34 @@ for (int i=0; i<encoded_length>>3; i++) {
 }
 printf("\n");
 #endif
+	long sum  = 0;
+#ifdef thread_for_scrambling_modulation
+//	for(int j = 0;j<100;j++){
+		gNB->complete_scrambling_and_modulation = 0;
+		gNB->complete_modulation = 0;
+		clock_gettime(CLOCK_REALTIME, &tt3);
+		//clock_gettime(CLOCK_REALTIME, &tt1);
+		//pthread_cond_signal(&gNB->thread_modulation.cond_tx);
+		for (int q=0; q<rel15->nb_codewords; q++)
+			pthread_cond_signal(&gNB->thread_scrambling[q].cond_tx);
+		//clock_gettime(CLOCK_REALTIME, &tt2);
+		//printf("pthread_cond_signal thread_scrambling [%d]  consumes %ld nanoseconds!\n",j,tt2.tv_nsec - tt1.tv_nsec);
+		//while(gNB->complete_modulation != 1);
+		//clock_gettime(CLOCK_REALTIME, &tt1);
+		while(gNB->complete_scrambling_and_modulation != 1);
+		//clock_gettime(CLOCK_REALTIME, &tt2);
+		//printf(" busy waiting for  [%d]  consumes %ld nanoseconds!\n",j,tt2.tv_nsec - tt1.tv_nsec);
+		clock_gettime(CLOCK_REALTIME, &tt4);
+		//usleep(100000);
+	//	printf("scrambling_proc[] for all consumes %ld nanoseconds!%%%%%%%%%%%%%%%\n",tt4.tv_nsec - tt3.tv_nsec);
+//		sum += (tt4.tv_nsec - tt3.tv_nsec);
+//	}
+//	printf("averge time = %ld\n",sum/100);
 	
-	pthread_cond_signal(&gNB->thread_modulation.cond_tx);
-	pthread_cond_signal(&gNB->thread_scrambling.cond_tx);
-	while(gNB->complete_scrambling != 1);
-	
-	while(gNB->complete_modulation != 1);
-	/*
+#else
   /// scrambling
   start_meas(dlsch_scrambling_stats);
-  printf("nb_codewords = %d encoded_length = %d\n",rel15->nb_codewords,encoded_length);
+  //printf("nb_codewords = %d encoded_length = %d\n",rel15->nb_codewords,encoded_length);
   for (int q=0; q<rel15->nb_codewords; q++)
     memset((void*)scrambled_output[q], 0, (encoded_length>>5)*sizeof(uint32_t));
   uint16_t n_RNTI = (pdcch_params.search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC)? \
@@ -174,8 +195,8 @@ for (int i=0; i<nb_symbols>>3; i++) {
   printf("\n");
 }
 #endif
-*/
 
+#endif
   /// Layer mapping
   nr_layer_mapping(mod_symbs,
                          rel15->nb_layers,

openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c

@@ -158,6 +158,9 @@ NR_gNB_DLSCH_t *new_gNB_dlsch(unsigned char Kmimo,
     for (int q=0; q<NR_MAX_NB_CODEWORDS; q++)
       dlsch->mod_symbs[q] = (int32_t *)malloc16(NR_MAX_PDSCH_ENCODED_LENGTH*sizeof(int32_t));
   
+    for (int q=0; q<NR_MAX_NB_CODEWORDS; q++)
+      dlsch->mod_symbs_test[q] = (int32_t *)malloc16(NR_MAX_PDSCH_ENCODED_LENGTH*sizeof(int32_t));
+
      dlsch->calib_dl_ch_estimates = (int32_t**)malloc16(64*sizeof(int32_t*));
      for (aa=0; aa<64; aa++) {
        dlsch->calib_dl_ch_estimates[aa] = (int32_t *)malloc16(OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES*sizeof(int32_t));
@@ -276,7 +279,16 @@ int nr_dlsch_encoding(unsigned char *a,
                       NR_gNB_DLSCH_t *dlsch,
                       NR_DL_FRAME_PARMS* frame_parms)
 {
-
+  PHY_VARS_gNB *gNB = RC.gNB[0][0];	
+  gNB->complete_encode[0] = 0;
+	gNB->complete_encode[1] = 0;
+	gNB->complete_encode[2] = 0;
+	gNB->complete_encode[3] = 0;
+	for (int t = 0; t < 4; t++){
+		pthread_cond_signal(&gNB->thread_encode[t].cond_encode);
+	}
+	while((gNB->complete_encode[0] != 1) || (gNB->complete_encode[1] != 1) || (gNB->complete_encode[2] != 1) || (gNB->complete_encode[3] != 1));
+  /*
   unsigned int G;
   unsigned int crc=1;
   uint8_t harq_pid = dlsch->harq_ids[frame&2][slot];
@@ -299,14 +311,14 @@ int nr_dlsch_encoding(unsigned char *a,
   uint16_t length_dmrs = 1;
   float Coderate = 0.0;
   uint8_t Nl = 4;
-
+  */
   /*
   uint8_t *channel_input[MAX_NUM_DLSCH_SEGMENTS]; //unsigned char
   for(j=0;j<MAX_NUM_DLSCH_SEGMENTS;j++) {
     channel_input[j] = (unsigned char *)malloc16(sizeof(unsigned char) * 68*384);
   }
   */
-  
+  /*
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_IN);
 
   A = rel15.transport_block_size;
@@ -320,6 +332,7 @@ int nr_dlsch_encoding(unsigned char *a,
 #ifdef DEBUG_DLSCH_CODING
   printf("encoding thinks this is a new packet \n");
 #endif
+*/
     /*
     int i;
     printf("dlsch (tx): \n");
@@ -327,7 +340,7 @@ int nr_dlsch_encoding(unsigned char *a,
       printf("%02x.",a[i]);
     printf("\n");
     */
-
+/*
     if (A > 3824) {
       // Add 24-bit crc (polynomial A) to payload
       crc = crc24a(a,A)>>8;
@@ -480,6 +493,6 @@ int nr_dlsch_encoding(unsigned char *a,
   }
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_ENCODING, VCD_FUNCTION_OUT);
-
+  */
   return 0;
 }

openair1/PHY/defs_gNB.h

@@ -133,6 +133,8 @@ typedef struct {
   int32_t *txdataF[NR_MAX_NB_LAYERS];
   /// Modulated symbols buffer
   int32_t *mod_symbs[NR_MAX_NB_CODEWORDS];
+  /// Modulated symbols buffer for test
+  int32_t *mod_symbs_test[NR_MAX_NB_CODEWORDS];
   /// beamforming weights for UE-spec transmission (antenna ports 5 or 7..14), for each codeword, maximum 4 layers?
   int32_t **ue_spec_bf_weights[NR_MAX_NB_LAYERS];
   /// dl channel estimates (estimated from ul channel estimates)
@@ -298,8 +300,21 @@ typedef struct{
 	//=====//
 	relaying_type_t r_type;
 	pthread_attr_t attr_scrambling;
+	int q_id;
 }scrambling_channel;
 
+typedef struct{
+	pthread_t pthread_encode;
+	pthread_cond_t cond_encode;
+	pthread_mutex_t mutex_encode;
+	pthread_attr_t attr_encode;
+	volatile int flag_wait;
+	int id;
+}dlsch_encoding_ISIP;
+
+typedef struct{
+	int seg;
+}ldpc_encoding_ISIP;
 typedef struct{
 	pthread_t pthread_modulation;
 	pthread_cond_t cond_tx;
@@ -847,12 +862,22 @@ typedef struct PHY_VARS_gNB_s {
   int32_t pusch_stats_bsr[NUMBER_OF_UE_MAX][10240];
   int32_t pusch_stats_BO[NUMBER_OF_UE_MAX][10240];
   
-  scrambling_channel thread_scrambling;
+  scrambling_channel thread_scrambling[NR_MAX_NB_CODEWORDS];
   modulation_channel thread_modulation;
-  volatile int complete_modulation;
-  volatile int complete_scrambling;
+  volatile uint8_t complete_modulation;
+  volatile uint8_t complete_scrambling;
+  volatile uint8_t complete_scrambling_and_modulation;
   uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
-  volatile int q_scrambling[13];
+  uint32_t scrambled_output_test[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
+  volatile int q_scrambling[NR_MAX_NB_CODEWORDS];
+  pthread_mutex_t complete_scrambling_modulation_mutex;
+  //**************************DLSCH ENCODING**************************//
+  dlsch_encoding_ISIP thread_encode[4];
+  ldpc_encoding_ISIP ldpc_encode;
+  
+  volatile uint8_t complete_encode[4];
+  
+  //**************************DLSCH ENCODING**************************//
 } PHY_VARS_gNB;
 
 #endif