partial fix for pdsch dmrs issue

decoding performance degraded. still some issue to be solved.

openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_decoding.c

@@ -267,7 +267,7 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
 
   uint8_t dmrs_Type = harq_process->dmrsConfigType;
   AssertFatal(dmrs_Type == 1 || dmrs_Type == 2,"Illegal dmrs_type %d\n",dmrs_Type);
-  uint8_t nb_re_dmrs = 12;//(dmrs_Type==1)?6:4;
+  uint8_t nb_re_dmrs = (dmrs_Type==1)?6:4; // should be changed based on MAC parameters
   uint16_t dmrs_length = get_num_dmrs(harq_process->dlDmrsSymbPos);
   AssertFatal(dmrs_length == 1 || dmrs_length == 2,"Illegal dmrs_length %d\n",dmrs_length);
 

openair1/SCHED_NR_UE/phy_procedures_nr_ue.c

@@ -3091,7 +3091,17 @@ void nr_ue_pdsch_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, int eNB
 		    dlsch0->current_harq_pid);
       else { // This is to adjust the llr offset in the case of skipping over a dmrs symbol (i.e. in case of no PDSCH REs in DMRS)
 	if      (pdsch == RA_PDSCH) ue->pdsch_vars_ra[eNB_id]->llr_offset[m]=ue->pdsch_vars_ra[eNB_id]->llr_offset[m-1];
-	else if (pdsch == PDSCH)    ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->llr_offset[m]=ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->llr_offset[m-1];
+	else if (pdsch == PDSCH)    nr_rx_pdsch(ue,
+                                  pdsch,
+                                  eNB_id,
+                                  eNB_id_i,
+                                  proc->frame_rx,
+                                  nr_tti_rx,  // nr_tti_rx,
+                                  m,
+                                  first_symbol_flag,
+                                  dual_stream_UE,
+                                  i_mod,
+                                  dlsch0->current_harq_pid);
 	else AssertFatal(1==0,"not RA_PDSCH or PDSCH\n");
       }
       if (pdsch == PDSCH)  LOG_D(PHY,"Done processing symbol %d : llr_offset %d\n",m,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->llr_offset[m]);

openair1/SIMULATION/NR_PHY/dlsim.c

@@ -736,7 +736,7 @@ int main(int argc, char **argv)
 
       NR_UE_DLSCH_t *dlsch0 = UE->dlsch[UE->current_thread_id[UE_proc.nr_tti_rx]][0][0];
 
-      int harq_pid = dlsch0->current_harq_pid;
+      int harq_pid = slot;
       NR_DL_UE_HARQ_t *UE_harq_process = dlsch0->harq_processes[harq_pid];
 
       NR_gNB_DLSCH_t *gNB_dlsch = gNB->dlsch[0][0];
@@ -752,10 +752,11 @@ int main(int argc, char **argv)
         memset(RC.nrmac[0]->cce_list[1][1],0,MAX_NUM_CCE*sizeof(int));
         clear_nr_nfapi_information(RC.nrmac[0], 0, frame, slot);
 
-        UE_list->UE_sched_ctrl[0].harq_processes[0].ndi = !(trial&1);
+        UE_list->UE_sched_ctrl[0].harq_processes[harq_pid].ndi = !(trial&1);
 
-        UE_list->UE_sched_ctrl[0].harq_processes[0].round = round;   
-        gNB->dlsch[0][0]->harq_processes[0]->round = round;
+        UE_list->UE_sched_ctrl[0].harq_processes[harq_pid].round = round;   
+        UE_list->UE_sched_ctrl[0].current_harq_pid = harq_pid;
+        gNB->dlsch[0][0]->harq_processes[harq_pid]->round = round;
       
         if (css_flag == 0) nr_schedule_uss_dlsch_phytest(0,frame,slot,&pucch_sched,&dlsch_config);
         else               nr_schedule_css_dlsch_phytest(0,frame,slot);

openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c

@@ -267,10 +267,7 @@ void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl
       rel15->coreset.scrambling_rnti = mac->t_crnti;
     } else {
       rel15->coreset.pdcch_dmrs_scrambling_id = *scc->physCellId;
-      if(mac->ra_state == WAIT_RAR)
-        rel15->coreset.scrambling_rnti = 0;
-      else
-        rel15->coreset.scrambling_rnti = rel15->rnti;
+      rel15->coreset.scrambling_rnti = 0;
     }
 
     if (add_dci){