DL Post processor: distinguish tx/retx

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -573,6 +573,8 @@ void nr_schedule_ue_spec(module_id_t module_id,
     if (sched_ctrl->rbSize <= 0 && !get_softmodem_params()->phy_test)
       continue;
 
+    const rnti_t rnti = UE_info->rnti[UE_id];
+
     /* POST processing */
     struct NR_PDSCH_TimeDomainResourceAllocationList *tdaList =
       sched_ctrl->active_bwp->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
@@ -600,6 +602,67 @@ void nr_schedule_ue_spec(module_id_t module_id,
                        1 /* nrOfLayers */)
         >> 3;
 
+    const int current_harq_pid = sched_ctrl->current_harq_pid;
+    NR_UE_harq_t *harq = &sched_ctrl->harq_processes[current_harq_pid];
+    NR_sched_pucch *pucch = &sched_ctrl->sched_pucch[sched_ctrl->pucch_sched_idx];
+    harq->feedback_slot = pucch->ul_slot;
+    harq->is_waiting = 1;
+    UE_info->mac_stats[UE_id].dlsch_rounds[harq->round]++;
+
+    nfapi_nr_dl_tti_request_body_t *dl_req = &gNB_mac->DL_req[CC_id].dl_tti_request_body;
+    nr_fill_nfapi_dl_pdu(module_id,
+                         UE_id,
+                         sched_ctrl->active_bwp->bwp_Id,
+                         sched_ctrl->search_space,
+                         sched_ctrl->coreset,
+                         dl_req,
+                         pucch,
+                         1 /* nrOfLayers */,
+                         sched_ctrl->mcs,
+                         sched_ctrl->rbSize,
+                         sched_ctrl->rbStart,
+                         sched_ctrl->numDmrsCdmGrpsNoData,
+                         getDmrsConfigType(sched_ctrl->active_bwp),
+                         sched_ctrl->mcsTableIdx,
+                         nr_get_code_rate_dl(sched_ctrl->mcs, sched_ctrl->mcsTableIdx),
+                         nr_get_Qm_dl(sched_ctrl->mcs, sched_ctrl->mcsTableIdx),
+                         TBS,
+                         sched_ctrl->time_domain_allocation,
+                         startSymbolIndex,
+                         nrOfSymbols,
+                         sched_ctrl->aggregation_level,
+                         sched_ctrl->cce_index,
+                         current_harq_pid,
+                         harq->ndi,
+                         harq->round);
+
+    NR_UE_ret_info_t *retInfo = &sched_ctrl->retInfo[current_harq_pid];
+    if (harq->round != 0) { /* retransmission */
+      if (sched_ctrl->rbSize != retInfo->rbSize)
+        LOG_W(MAC,
+              "retransmission uses different rbSize (%d vs. orig %d)\n",
+              sched_ctrl->rbSize,
+              retInfo->rbSize);
+      if (sched_ctrl->time_domain_allocation != retInfo->time_domain_allocation)
+        LOG_W(MAC,
+              "retransmission uses different time_domain_allocation (%d vs. orig %d)\n",
+              sched_ctrl->time_domain_allocation,
+              retInfo->time_domain_allocation);
+      if (sched_ctrl->mcs != retInfo->mcs
+          || sched_ctrl->mcsTableIdx != retInfo->mcsTableIdx
+          || sched_ctrl->numDmrsCdmGrpsNoData != retInfo->numDmrsCdmGrpsNoData)
+        LOG_W(MAC,
+              "retransmission uses different table/MCS/numDmrsCdmGrpsNoData (%d/%d/%d vs. orig %d/%d/%d)\n",
+              sched_ctrl->mcsTableIdx,
+              sched_ctrl->mcs,
+              sched_ctrl->numDmrsCdmGrpsNoData,
+              retInfo->mcsTableIdx,
+              retInfo->mcs,
+              retInfo->numDmrsCdmGrpsNoData);
+      /* we do not have to do anything, since we do not require to get data
+       * from RLC, encode MAC CEs, or copy data to FAPI structures */
+      LOG_W(MAC, "%d.%2d retransmission UE %d/RNTI %04x\n", frame, slot, UE_id, rnti);
+    } else { /* initial transmission */
       /* Get RLC data TODO: remove random data retrieval */
       int header_length_total = 0;
       int header_length_last = 0;
@@ -608,7 +671,6 @@ void nr_schedule_ue_spec(module_id_t module_id,
       uint16_t sdu_lengths[NB_RB_MAX] = {0};
       uint8_t mac_sdus[MAX_NR_DLSCH_PAYLOAD_BYTES];
       unsigned char sdu_lcids[NB_RB_MAX] = {0};
-    const rnti_t rnti = UE_info->rnti[UE_id];
       const int lcid = DL_SCH_LCID_DTCH;
       if (sched_ctrl->num_total_bytes > 0) {
         LOG_D(MAC,
@@ -689,49 +751,14 @@ void nr_schedule_ue_spec(module_id_t module_id,
           gNB_mac->UE_info.DLSCH_pdu[0][0].payload[0][offset + j] = 0;
       }
 
-    const int current_harq_pid = sched_ctrl->current_harq_pid;
-    NR_UE_harq_t *harq = &sched_ctrl->harq_processes[current_harq_pid];
-    NR_sched_pucch *pucch = &sched_ctrl->sched_pucch[sched_ctrl->pucch_sched_idx];
-    harq->feedback_slot = pucch->ul_slot;
-    harq->is_waiting = 1;
-    UE_info->mac_stats[UE_id].dlsch_rounds[harq->round]++;
-    if (harq->round == 0)
       UE_info->mac_stats[UE_id].dlsch_total_bytes += TBS;
 
-    NR_UE_ret_info_t *retInfo = &sched_ctrl->retInfo[current_harq_pid];
       retInfo->rbSize = sched_ctrl->rbSize;
       retInfo->time_domain_allocation = sched_ctrl->time_domain_allocation;
       retInfo->mcsTableIdx = sched_ctrl->mcsTableIdx;
       retInfo->mcs = sched_ctrl->mcs;
       retInfo->numDmrsCdmGrpsNoData = sched_ctrl->numDmrsCdmGrpsNoData;
 
-    nfapi_nr_dl_tti_request_body_t *dl_req = &gNB_mac->DL_req[CC_id].dl_tti_request_body;
-    nr_fill_nfapi_dl_pdu(module_id,
-                         UE_id,
-                         sched_ctrl->active_bwp->bwp_Id,
-                         sched_ctrl->search_space,
-                         sched_ctrl->coreset,
-                         dl_req,
-                         pucch,
-                         1 /* nrOfLayers */,
-                         sched_ctrl->mcs,
-                         sched_ctrl->rbSize,
-                         sched_ctrl->rbStart,
-                         sched_ctrl->numDmrsCdmGrpsNoData,
-                         getDmrsConfigType(sched_ctrl->active_bwp),
-                         sched_ctrl->mcsTableIdx,
-                         nr_get_code_rate_dl(sched_ctrl->mcs, sched_ctrl->mcsTableIdx),
-                         nr_get_Qm_dl(sched_ctrl->mcs, sched_ctrl->mcsTableIdx),
-                         TBS,
-                         sched_ctrl->time_domain_allocation,
-                         startSymbolIndex,
-                         nrOfSymbols,
-                         sched_ctrl->aggregation_level,
-                         sched_ctrl->cce_index,
-                         current_harq_pid,
-                         harq->ndi,
-                         harq->round);
-
       nfapi_nr_pdu_t *tx_req = &gNB_mac->TX_req[CC_id].pdu_list[gNB_mac->TX_req[CC_id].Number_of_PDUs];
       configure_fapi_dl_Tx(module_id,
                            frame,
@@ -742,16 +769,19 @@ void nr_schedule_ue_spec(module_id_t module_id,
                            gNB_mac->pdu_index[CC_id]);
 
 #if defined(ENABLE_MAC_PAYLOAD_DEBUG)
-    if (frame%100 == 0){
+      if (frame%100 == 0) {
         LOG_I(MAC,
               "%d.%d, first 10 payload bytes, TBS size: %d \n",
               frame,
               slot,
               TBS);
-      for(int i = 0; i < 10; i++) {
-        LOG_I(MAC, "byte %d : %x\n", i,((uint8_t *)gNB_mac->UE_info.DLSCH_pdu[0][0].payload[0])[i]);
-      }
+        for(int i = 0; i < 10; i++)
+          LOG_I(MAC,
+                "byte %d: %x\n",
+                i,
+                ((uint8_t *)gNB_mac->UE_info.DLSCH_pdu[0][0].payload[0])[i]);
       }
 #endif
     }
+  }
 }