PRB bundling

nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface.h

@@ -323,6 +323,17 @@ typedef enum {
   NFAPI_NR_PDSCH_RBG_CONFIG_TYPE2
 } nfapi_nr_pdsch_rbg_config_type_e;
 
+typedef enum {
+  NFAPI_NR_PRG_GRANULARITY_2=2,
+  NFAPI_NR_PRG_GRANULARITY_4=4,
+  NFAPI_NR_PRG_GRANULARITY_WIDEBAND
+} nfapi_nr_prg_granularity_e;
+
+typedef enum {
+  NFAPI_NR_PRB_BUNDLING_TYPE_STATIC=0,
+  NFAPI_NR_PRB_BUNDLING_TYPE_DYNAMIC
+} nfapi_nr_prb_bundling_type_e;
+
 // P7 Sub Structures
 
 typedef struct {

openair1/PHY/NR_TRANSPORT/nr_dlsch.c

@@ -29,3 +29,5 @@
 * \note
 * \warning
 */
+
+

openair1/PHY/NR_TRANSPORT/nr_dlsch.h

@@ -44,3 +44,5 @@ uint8_t nr_get_S(uint8_t row_idx, uint8_t CP, uint8_t time_alloc_type, uint8_t d
 void nr_get_rbg_parms(NR_BWP_PARMS* bwp, uint8_t config_type);
 
 void nr_get_rbg_list(uint32_t bitmap, uint8_t n_rbg, uint8_t* rbg_list);
+
+void nr_get_PRG_parms(NR_BWP_PARMS* bwp, NR_gNB_DCI_ALLOC_t dci_alloc, uint8_t prb_bundling_type);

openair1/PHY/NR_TRANSPORT/nr_dlsch_tools.c

@@ -191,7 +191,7 @@ void nr_get_rbg_parms(NR_BWP_PARMS* bwp, uint8_t config_type) {
   rbg_parms->P = get_RBG_size_P(bwp->N_RB, config_type);
   rbg_parms->start_size = rbg_parms->P - bwp->location%rbg_parms->P;
   rbg_parms->end_size = ((bwp->location + bwp->N_RB)%rbg_parms->P)? ((bwp->location + bwp->N_RB)%rbg_parms->P) : rbg_parms->P;
-  rbg_parms->N_RBG = (uint8_t)ceil( (bwp->N_RB + (bwp->location%rbg_parms->P))/rbg_parms->P);
+  rbg_parms->N_RBG = (uint8_t)ceil( (bwp->N_RB + (bwp->location%rbg_parms->P))/(float)rbg_parms->P);
   LOG_I(PHY, "RBG parameters for BWP %d location %d N_RB %d:\n", bwp->bwp_id, bwp->location, bwp->N_RB);
   LOG_I(PHY, "P %d\t start size %d\t endsize %d\t N_RBG %d\n", rbg_parms->P, rbg_parms->start_size, rbg_parms->end_size, rbg_parms->N_RBG);
 }
@@ -211,3 +211,26 @@ static inline uint16_t get_RIV(uint16_t rb_start, uint16_t L, uint16_t N_RB) {
   else
     return (N_RB*(N_RB-L+1) + (N_RB-1-rb_start));
 }
+
+  /// PRB bundling routines
+
+// Precoding granularity
+static inline uint8_t nr_get_P_prime(uint8_t rnti_type, uint8_t dci_format, uint8_t prb_bundling_type) {
+  if (dci_format == NFAPI_NR_DL_DCI_FORMAT_1_0)
+    return (NFAPI_NR_PRG_GRANULARITY_2);
+  else // NFAPI_NR_DL_DCI_FORMAT_1_1
+    return ((prb_bundling_type)?0:2);// incomplete for 1_1
+}
+
+void nr_get_PRG_parms(NR_BWP_PARMS* bwp, NR_gNB_DCI_ALLOC_t dci_alloc, uint8_t prb_bundling_type) {
+  nr_prg_parms_t* prg_parms = &bwp->prg_parms;
+
+  prg_parms->P_prime = nr_get_P_prime(dci_alloc.pdcch_params.rnti_type, dci_alloc.pdcch_params.dci_format, prb_bundling_type);
+  prg_parms->start_size = prg_parms->P_prime - bwp->location%prg_parms->P_prime;
+  prg_parms->end_size = (bwp->location + bwp->N_RB)%prg_parms->P_prime;
+  if (!prg_parms->end_size)
+    prg_parms->end_size = prg_parms->P_prime;
+  prg_parms->N_PRG = ceil((float)bwp->N_RB/prg_parms->P_prime);
+  LOG_I(PHY, "PRG parameters for BWP %d location %d N_RB %d:\n", bwp->bwp_id, bwp->location, bwp->N_RB);
+  LOG_I(PHY, "P_prime %d\t start size %d\t endsize %d\t N_PRG %d\n", prg_parms->P_prime, prg_parms->start_size, prg_parms->end_size, prg_parms->N_PRG);
+}

openair1/PHY/defs_nr_common.h

@@ -123,6 +123,17 @@ typedef struct {
   uint8_t N_RBG;
 }nr_rbg_parms_t;
 
+typedef struct {
+  /// Size of first PRG
+  uint8_t start_size;
+  /// Nominal size
+  uint8_t P_prime;
+  /// Size of last PRG
+  uint8_t end_size;
+  /// Number of PRG
+  uint8_t N_PRG;
+} nr_prg_parms_t;
+
 typedef struct NR_BWP_PARMS {
   /// BWP ID
   uint8_t bwp_id;
@@ -138,6 +149,8 @@ typedef struct NR_BWP_PARMS {
   uint8_t cyclic_prefix;
   /// RBG params
   nr_rbg_parms_t rbg_parms;
+  /// PRG params
+  nr_prg_parms_t prg_parms;
 } NR_BWP_PARMS;
 
 typedef struct {

openair1/SCHED_NR/nr_ru_procedures.c

@@ -101,8 +101,7 @@ void nr_feptx_ofdm_2thread(RU_t *ru) {
   // this copy should be done in the precoding thread (currently inactive)
   for (int aa=0;aa<ru->nb_tx;aa++)
     memcpy((void*)ru->common.txdataF_BF[aa],
-   (void*)&ru->gNB_list[0]->common_vars.txdataF[aa][subframe*fp->samples_per_subframe_wCP],
-   fp->samples_per_subframe_wCP*sizeof(int32_t));
+   (void*)ru->gNB_list[0]->common_vars.txdataF[aa],fp->samples_per_subframe_wCP*sizeof(int32_t));
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_RU_FEPTX_OFDM , 1 );
 

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -170,10 +170,8 @@ void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
   if (do_meas==1) start_meas(&gNB->phy_proc_tx);
 
   // clear the transmit data array for the current subframe
-  for (aa=0; aa<cfg->rf_config.tx_antenna_ports.value; aa++) {      
-    memset(&gNB->common_vars.txdataF[aa][subframe*fp->samples_per_subframe_wCP],
-	   0,fp->samples_per_subframe_wCP*sizeof(int32_t));
-  }
+  for (aa=0; aa<cfg->rf_config.tx_antenna_ports.value; aa++)
+    memset(&gNB->common_vars.txdataF[aa],0,fp->samples_per_subframe_wCP*sizeof(int32_t));
 
   if (nfapi_mode == 0 || nfapi_mode == 1) {
     nr_common_signal_procedures(gNB,frame, subframe);