get nrOfLayers from DCI info at UE

openair1/SCHED_NR_UE/fapi_nr_ue_l1.c

@@ -122,7 +122,14 @@ int8_t nr_ue_scheduled_response(nr_scheduled_response_t *scheduled_response){
             dlsch0->g_pucch = dlsch_config_pdu->accumulated_delta_PUCCH;
             dlsch0_harq->harq_ack.pucch_resource_indicator = dlsch_config_pdu->pucch_resource_id;
             dlsch0_harq->harq_ack.slot_for_feedback_ack = (slot+dlsch_config_pdu->pdsch_to_harq_feedback_time_ind)%frame_parms.slots_per_frame;
-            dlsch0_harq->Nl=1;
+
+            //get nrOfLayers from DCI info
+            uint8_t Nl = 0;
+            for (i = 0; i < 12; i++) { // max 12 ports
+              if ((dlsch_config_pdu->dmrs_ports>>i)&0x01) Nl += 1;
+            }
+            dlsch0_harq->Nl = Nl;
+
             dlsch0_harq->mcs_table=dlsch_config_pdu->mcs_table;
             dlsch0_harq->harq_ack.rx_status = downlink_harq_process(dlsch0_harq, dlsch0->current_harq_pid, dlsch_config_pdu->ndi, dlsch0->rnti_type);
             if (dlsch0_harq->status != ACTIVE) {

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -698,7 +698,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
       dlsch_config_pdu_1_0->n_dmrs_cdm_groups = 1;
     else
       dlsch_config_pdu_1_0->n_dmrs_cdm_groups = 2;
-    dlsch_config_pdu_1_0->dmrs_ports = 0;
+    dlsch_config_pdu_1_0->dmrs_ports = 1; // only port 0 in case of DCI 1_0
     /* VRB_TO_PRB_MAPPING */
     dlsch_config_pdu_1_0->vrb_to_prb_mapping = (dci->vrb_to_prb_mapping.val == 0) ? vrb_to_prb_mapping_non_interleaved:vrb_to_prb_mapping_interleaved;
     /* MCS TABLE INDEX */