new attempt to fix cdm both for sa and mimo

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -455,9 +455,7 @@ bool allocate_dl_retransmission(module_id_t module_id,
   int rbStart = NRRIV2PRBOFFSET(genericParameters->locationAndBandwidth, MAX_BWP_SIZE);
 
   NR_pdsch_semi_static_t *ps = &sched_ctrl->pdsch_semi_static;
-  const long f = sched_ctrl->search_space->searchSpaceType->choice.ue_Specific->dci_Formats;
-  const uint8_t num_dmrs_cdm_grps_no_data = sched_ctrl->active_bwp ? (f ? 1 : (ps->nrOfSymbols == 2 ? 1 : 2)) : (ps->nrOfSymbols == 2 ? 1 : 2);
-
+  const long f = sched_ctrl->active_bwp ? sched_ctrl->search_space->searchSpaceType->choice.ue_Specific->dci_Formats : 0;
   int rbSize = 0;
   const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id][slot] : 1;
   if (tda == retInfo->time_domain_allocation) {
@@ -476,9 +474,8 @@ bool allocate_dl_retransmission(module_id_t module_id,
     }
     /* check whether we need to switch the TDA allocation since the last
      * (re-)transmission */
-    if (ps->time_domain_allocation != tda || ps->numDmrsCdmGrpsNoData != num_dmrs_cdm_grps_no_data)
-      nr_set_pdsch_semi_static(
-          scc, UE_info->CellGroup[UE_id], sched_ctrl->active_bwp, tda, num_dmrs_cdm_grps_no_data, ps);
+    if (ps->time_domain_allocation != tda)
+      nr_set_pdsch_semi_static(scc, UE_info->CellGroup[UE_id], sched_ctrl->active_bwp, tda, f, ps);
   } else {
     /* the retransmission will use a different time domain allocation, check
      * that we have enough resources */
@@ -488,7 +485,7 @@ bool allocate_dl_retransmission(module_id_t module_id,
       rbSize++;
     NR_pdsch_semi_static_t temp_ps;
     temp_ps.nrOfLayers = 1;
-    nr_set_pdsch_semi_static(scc, UE_info->CellGroup[UE_id], sched_ctrl->active_bwp, tda, num_dmrs_cdm_grps_no_data, &temp_ps);
+    nr_set_pdsch_semi_static(scc, UE_info->CellGroup[UE_id], sched_ctrl->active_bwp, tda, f, &temp_ps);
     uint32_t new_tbs;
     uint16_t new_rbSize;
     bool success = nr_find_nb_rb(retInfo->Qm,
@@ -683,11 +680,9 @@ void pf_dl(module_id_t module_id,
     const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id][slot] : 1;
     NR_sched_pdsch_t *sched_pdsch = &sched_ctrl->sched_pdsch;
     NR_pdsch_semi_static_t *ps = &sched_ctrl->pdsch_semi_static;
-    const long f = sched_ctrl->search_space->searchSpaceType->choice.ue_Specific->dci_Formats;
-    const uint8_t num_dmrs_cdm_grps_no_data = sched_ctrl->active_bwp ? (f ? 1 : (ps->nrOfSymbols == 2 ? 1 : 2)) : (ps->nrOfSymbols == 2 ? 1 : 2);
-    if (ps->time_domain_allocation != tda || ps->numDmrsCdmGrpsNoData != num_dmrs_cdm_grps_no_data)
-      nr_set_pdsch_semi_static(
-          scc, UE_info->CellGroup[UE_id], sched_ctrl->active_bwp, tda, num_dmrs_cdm_grps_no_data, ps);
+    const long f = sched_ctrl->active_bwp ? sched_ctrl->search_space->searchSpaceType->choice.ue_Specific->dci_Formats : 0;
+    if (ps->time_domain_allocation != tda)
+      nr_set_pdsch_semi_static(scc, UE_info->CellGroup[UE_id], sched_ctrl->active_bwp, tda, f, ps);
     sched_pdsch->Qm = nr_get_Qm_dl(sched_pdsch->mcs, ps->mcsTableIdx);
     sched_pdsch->R = nr_get_code_rate_dl(sched_pdsch->mcs, ps->mcsTableIdx);
     sched_pdsch->pucch_allocation = alloc;

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

@@ -299,7 +299,7 @@ void nr_set_pdsch_semi_static(const NR_ServingCellConfigCommon_t *scc,
                               const NR_CellGroupConfig_t *secondaryCellGroup,
                               const NR_BWP_Downlink_t *bwp,
                               int tda,
-                              uint8_t num_dmrs_cdm_grps_no_data,
+                              const long dci_format,
                               NR_pdsch_semi_static_t *ps)
 {
   ps->time_domain_allocation = tda;
@@ -325,12 +325,13 @@ void nr_set_pdsch_semi_static(const NR_ServingCellConfigCommon_t *scc,
   }
   else ps->mcsTableIdx = 0;
 
-  set_dl_dmrs_ports(ps);
+  if(dci_format == 0) // format 1_0
+    ps->numDmrsCdmGrpsNoData = (ps->nrOfSymbols == 2 ? 1 : 2);
+  else
+    set_dl_dmrs_ports(ps);
   ps->dmrsConfigType = bwp!=NULL ? (bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1) : 0;
 
-  // if no data in dmrs cdm group is 1 only even REs have no data
-  // if no data in dmrs cdm group is 2 both odd and even REs have no data
-  ps->N_PRB_DMRS = num_dmrs_cdm_grps_no_data * (ps->dmrsConfigType == NFAPI_NR_DMRS_TYPE1 ? 6 : 4);
+  ps->N_PRB_DMRS = ps->numDmrsCdmGrpsNoData * (ps->dmrsConfigType == NFAPI_NR_DMRS_TYPE1 ? 6 : 4);
   ps->dl_dmrs_symb_pos = fill_dmrs_mask(bwp ? bwp->bwp_Dedicated->pdsch_Config->choice.setup : NULL, scc->dmrs_TypeA_Position, ps->nrOfSymbols, ps->startSymbolIndex, mapping_type);
   ps->N_DMRS_SLOT = get_num_dmrs(ps->dl_dmrs_symb_pos);
 }

openair2/LAYER2/NR_MAC_gNB/mac_proto.h

@@ -280,7 +280,7 @@ void nr_set_pdsch_semi_static(const NR_ServingCellConfigCommon_t *scc,
                               const NR_CellGroupConfig_t *secondaryCellGroup,
                               const NR_BWP_Downlink_t *bwp,
                               int tda,
-                              uint8_t num_dmrs_cdm_grps_no_data,
+                              const long dci_format,
                               NR_pdsch_semi_static_t *ps);
 
 void nr_set_pusch_semi_static(const NR_ServingCellConfigCommon_t *scc,