PDSCH generation start

openair1/PHY/NR_TRANSPORT/nr_dci_tools.c

@@ -119,6 +119,8 @@ void nr_fill_dci_and_dlsch(PHY_VARS_gNB *gNB,
 	nfapi_nr_dl_config_dci_dl_pdu_rel15_t *pdu_rel15 = &pdu->dci_dl_pdu.dci_dl_pdu_rel15;
   nfapi_nr_dl_config_pdcch_parameters_rel15_t *params_rel15 = &pdu->dci_dl_pdu.pdcch_params_rel15;
 	nfapi_nr_config_request_t *cfg = &gNB->gNB_config;
+  NR_gNB_DLSCH_t *dlsch = &gNB->dlsch;
+  NR_DL_gNB_HARQ_t **harq = dlsch->harq_processes;
 
   uint16_t N_RB = fp->initial_bwp_dl.N_RB;
   uint16_t N_RB_UL = fp->initial_bwp_ul.N_RB;

openair1/PHY/NR_TRANSPORT/nr_dlsch.c

@@ -158,6 +158,42 @@ uint8_t nr_generate_pdsch(NR_gNB_DLSCH_t dlsch,
                           NR_DL_FRAME_PARMS frame_parms,
                           nfapi_nr_config_request_t config) {
 
+  NR_DL_gNB_HARQ_t *harq = dlsch.harq_processes[0];
+  uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH]={0};
+  uint16_t mod_symbs[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>1] = {0};
+  uint16_t tx_layers[NR_MAX_NB_LAYERS][NR_MAX_PDSCH_ENCODED_LENGTH>>1];
+
+  /// CRC, coding, interleaving and rate matching
+
+  /// scrambling
+  uint16_t n_RNTI = (pdcch_params.search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC)? ((pdcch_params.scrambling_id)?pdcch_params.rnti:0) : 0;
+  uint16_t Nid = (pdcch_params.search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC)? pdcch_params.scrambling_id : config.sch_config.physical_cell_id.value;
+  for (int q=0; q<harq->n_codewords; q++)
+    nr_pdsch_codeword_scrambling(harq->f,
+                         harq->TBS,
+                         q,
+                         Nid,
+                         n_RNTI,
+                         scrambled_output[q]);
+ 
+  /// Modulation
+  for (int q=0; q<harq->n_codewords; q++)
+    nr_pdsch_codeword_modulation(scrambled_output[q],
+                         harq->Qm,
+                         harq->TBS,
+                         mod_symbs[q]);
+
+  /// Layer mapping
+  nr_pdsch_layer_mapping(mod_symbs,
+                         harq->n_codewords,
+                         harq->Nl,
+                         n_symbs,
+                         tx_layers);
+
+  /// Antenna port mapping -- Not yet necessary
+
+  /// Resource mapping
+  
   
   return 0;
 }

openair1/PHY/defs_gNB.h

@@ -132,16 +132,26 @@ typedef struct {
   uint8_t first_layer;
   /// codeword this transport block is mapped to
   uint8_t codeword;
+  /// Number of codewords
+  uint8_t n_codewords;
 } NR_DL_gNB_HARQ_t;
 
 
 typedef struct {
 
-  /// Pointers to 8 HARQ processes for the DLSCH
-  NR_DL_gNB_HARQ_t *harq_processes[8];
+  /// Pointers to 16 HARQ processes for the DLSCH
+  NR_DL_gNB_HARQ_t *harq_processes[16];
   nfapi_nr_pdsch_time_domain_alloc_type_e time_alloc_type;
   uint8_t time_alloc_list_flag;
   uint8_t rbg_list[NR_MAX_NB_RBG];
+  /// Time domain allocation
+  uint8_t S;
+  uint8_t L;
+  /// Freq domain allocation
+  uint16_t rb_start;
+  uint16_t n_rb;
+  /// BWP index
+  uint8_t bwp_idx;
 
   /// TX buffers for UE-spec transmission (antenna ports 5 or 7..14, prior to precoding)
   int32_t *txdataF[8];

openair1/PHY/defs_nr_common.h

@@ -85,6 +85,7 @@
 #define NR_MAX_CSET_DURATION 3
 
 #define NR_MAX_NB_RBG 18
+#define NR_MAX_NB_LAYERS 8
 
 typedef enum {
   NR_MU_0=0,

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

@@ -70,8 +70,8 @@ void nr_schedule_css_dlsch_phytest(module_id_t   module_idP,
                                cfg->rf_config.dl_channel_bandwidth.value);
     memcpy((void*)params_rel15, (void*)&gNB->pdcch_type0_params, sizeof(nfapi_nr_dl_config_pdcch_parameters_rel15_t));
 
-    pdu_rel15->frequency_domain_assignment = 5;
-    pdu_rel15->time_domain_assignment = 3;
+    pdu_rel15->frequency_domain_assignment = get_RIV(0, 40, 106);
+    pdu_rel15->time_domain_assignment = get_SLIV(8, 14);
     pdu_rel15->vrb_to_prb_mapping = 1;
     pdu_rel15->mcs = 12;
     pdu_rel15->tb_scaling = 1;