added missing file

openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/* \file nr_ue_dci_configuration.c
+ * \brief functions for generating dci search procedures based on RRC Serving Cell Group Configuration
+ * \author R. Knopp
+ * \date 2020
+ * \version 0.1
+ * \company Eurecom
+ * \email: knopp@eurecom.fr
+ * \note
+ * \warning
+ */
+
+#include "mac_proto.h"
+#include "mac_defs.h"
+#include "assertions.h"
+#include "LAYER2/NR_MAC_UE/mac_extern.h"
+#include "mac_defs.h"
+#include <stdio.h>
+
+#ifdef NR_PDCCH_DCI_TOOLS_DEBUG
+#define LOG_DCI_D(a...) printf("\t\t<-NR_PDCCH_DCI_TOOLS_DEBUG (nr_extract_dci_info) ->" a)
+#else 
+#define LOG_DCI_D(a...)
+#endif
+#define LOG_DCI_PARM(a...) LOG_D(PHY,"\t<-NR_PDCCH_DCI_TOOLS_DEBUG (nr_generate_ue_ul_dlsch_params_from_dci)" a)
+
+
+void fill_dci_search_candidates(NR_SearchSpace_t *ss,fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15) {
+
+  LOG_D(MAC,"Filling search candidates for DCI\n");
+  
+  rel15->number_of_candidates=1;
+  rel15->CCE[0]=0;
+  rel15->L[0]=4;
+}
+
+void ue_dci_configuration(NR_UE_MAC_INST_t *mac,fapi_nr_dl_config_request_t *dl_config,int frame,int slot) {
+
+  // check if DL slot
+  if (is_nr_DL_slot(mac->scc->tdd_UL_DL_ConfigurationCommon,slot)==1) {
+    
+    // get BWP 1, Coreset 0, SearchSpace 0  
+    if (mac->DLbwp[0]==NULL) {
+      AssertFatal(mac->scd->downlinkBWP_ToAddModList!=NULL,"downlinkBWP_ToAddModList is null\n");
+      AssertFatal(mac->scd->downlinkBWP_ToAddModList->list.count==1,"downlinkBWP_ToAddModList->list->count is %d\n",
+		  mac->scd->downlinkBWP_ToAddModList->list.count);
+      mac->DLbwp[0]      = mac->scd->downlinkBWP_ToAddModList->list.array[0];
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated!=NULL,"bwp_Dedicated is null\n");
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated->pdcch_Config!=NULL,"pdcch_Config is null\n");
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->controlResourceSetToAddModList!=NULL,"controlResourceSetToAddModList is null\n");
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->controlResourceSetToAddModList->list.count==1,"controlResourceSetToAddModList->list.count=%d\n",
+		  mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->controlResourceSetToAddModList->list.count);
+      mac->coreset[0][0] = mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->controlResourceSetToAddModList->list.array[0];
+      AssertFatal(mac->coreset[0][0]!=NULL,"coreset[0][0] is null\n");
+      
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList!=NULL,"searchPsacesToAddModList is null\n");
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList->list.count>0,
+		  "searchPsacesToAddModList is empty\n");
+      NR_SearchSpace_t *ss;
+      int ss_id=0;
+      AssertFatal(mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList->list.count<FAPI_NR_MAX_SS_PER_CORESET,
+		  "too many searchpaces per coreset %d\n",
+		  mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList->list.count);
+      for (int i=0;i<mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList->list.count;i++) {
+	ss=mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList->list.array[i];
+	AssertFatal(ss->controlResourceSetId != NULL,"ss->controlResourceSetId is null\n");
+	AssertFatal(ss->searchSpaceType != NULL,"ss->searchSpaceType is null\n");
+	AssertFatal(*ss->controlResourceSetId == mac->coreset[0][0]->controlResourceSetId,"ss->controlResourceSetId is unknown\n");
+	mac->SSpace[0][0][ss_id] = ss;
+	ss_id++;
+      }
+    }
+    if (mac->ULbwp[0]==NULL) {
+      AssertFatal(mac->scd->uplinkConfig->uplinkBWP_ToAddModList!=NULL,"uplinkBWP_ToAddModList is null\n");
+      AssertFatal(mac->scd->uplinkConfig->uplinkBWP_ToAddModList->list.count==1,"uplinkBWP_ToAddModList->list->count is %d\n",
+		  mac->scd->uplinkConfig->uplinkBWP_ToAddModList->list.count);
+      mac->ULbwp[0]      = mac->scd->uplinkConfig->uplinkBWP_ToAddModList->list.array[0];
+      AssertFatal(mac->ULbwp[0]->bwp_Dedicated!=NULL,"bwp_Dedicated is null\n");
+    }
+    // check search spaces
+	
+    int ss_id=0;
+    fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15;
+    int sps =mac->DLbwp[0]->bwp_Common->genericParameters.cyclicPrefix == NULL ? 14 : 12;
+    
+    while(mac->SSpace[0][0][ss_id]!=NULL && 
+	  ss_id < mac->DLbwp[0]->bwp_Dedicated->pdcch_Config->choice.setup->searchSpacesToAddModList->list.count) {
+      
+      AssertFatal(mac->SSpace[0][0][ss_id]->monitoringSymbolsWithinSlot!=NULL,"ss->monitoringSymbolsWithinSlot is null\n");
+      AssertFatal(mac->SSpace[0][0][ss_id]->monitoringSymbolsWithinSlot->buf!=NULL,"ss->monitoringSymbolsWithinSlot->buf is null\n");
+      
+      ss_id++;
+    }
+    if (mac->ra_state == WAIT_RAR) {
+      // check for RAR
+      rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15; 
+      rel15->rnti = 2;//get_RA_RNTI(mac,frame,slot);
+      dl_config->number_pdus = dl_config->number_pdus + 1;
+    }
+    else if (mac->ra_state == WAIT_CONTENTION_RESOLUTION) {
+      rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15; 
+      rel15->rnti = mac->t_crnti;
+      dl_config->number_pdus = dl_config->number_pdus + 1;
+    }
+    if (mac->crnti>0) {
+      rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15; 
+      rel15->rnti = mac->crnti;
+      rel15->BWPSize = NRRIV2BW(mac->DLbwp[0]->bwp_Common->genericParameters.locationAndBandwidth,275);
+      rel15->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[0]->bwp_Common->genericParameters.locationAndBandwidth,275);
+      rel15->SubcarrierSpacing = mac->DLbwp[0]->bwp_Common->genericParameters.subcarrierSpacing;
+      // get UE-specific search space
+      for (ss_id=0;ss_id<FAPI_NR_MAX_SS_PER_CORESET && mac->SSpace[0][0][ss_id]!=NULL;ss_id++) 
+	if (mac->SSpace[0][0][ss_id]->searchSpaceType->present == NR_SearchSpace__searchSpaceType_PR_ue_Specific) break;
+      AssertFatal(ss_id<FAPI_NR_MAX_SS_PER_CORESET,"couldn't find a UE-specific SS\n");
+      // for SPS=14 8 MSBs in positions 13 downto 6,  
+      uint16_t monitoringSymbolsWithinSlot = (mac->SSpace[0][0][ss_id]->monitoringSymbolsWithinSlot->buf[0]<<(sps-8)) | 
+	(mac->SSpace[0][0][ss_id]->monitoringSymbolsWithinSlot->buf[1]>>(16-sps));
+      
+      for (int i=0; i<sps; i++)
+	if ((monitoringSymbolsWithinSlot>>(sps-1-i))&1) {
+	  rel15->coreset.StartSymbolIndex=i;
+	  break;
+	}
+      rel15->coreset.duration = mac->coreset[0][0]->duration;
+      for (int i=0;i<6;i++)
+	rel15->coreset.frequency_domain_resource[i] = mac->coreset[0][0]->frequencyDomainResources.buf[i];
+      
+      rel15->coreset.CceRegMappingType = mac->coreset[0][0]->cce_REG_MappingType.present == NR_ControlResourceSet__cce_REG_MappingType_PR_interleaved?
+	FAPI_NR_CCE_REG_MAPPING_TYPE_INTERLEAVED : FAPI_NR_CCE_REG_MAPPING_TYPE_NON_INTERLEAVED;
+      if (rel15->coreset.CceRegMappingType == FAPI_NR_CCE_REG_MAPPING_TYPE_INTERLEAVED) {
+	rel15->coreset.RegBundleSize = (mac->coreset[0][0]->cce_REG_MappingType.choice.interleaved->reg_BundleSize == NR_ControlResourceSet__cce_REG_MappingType__interleaved__reg_BundleSize_n6) ? 6 : (2+mac->coreset[0][0]->cce_REG_MappingType.choice.interleaved->reg_BundleSize);
+	rel15->coreset.InterleaverSize = (mac->coreset[0][0]->cce_REG_MappingType.choice.interleaved->interleaverSize==NR_ControlResourceSet__cce_REG_MappingType__interleaved__interleaverSize_n6) ? 6 : (2+mac->coreset[0][0]->cce_REG_MappingType.choice.interleaved->interleaverSize);
+	AssertFatal(mac->scc->physCellId != NULL,"mac->scc->physCellId is null\n");
+	rel15->coreset.ShiftIndex = mac->coreset[0][0]->cce_REG_MappingType.choice.interleaved->shiftIndex != NULL ? *mac->coreset[0][0]->cce_REG_MappingType.choice.interleaved->shiftIndex : *mac->scc->physCellId;
+      }
+      else {
+	rel15->coreset.RegBundleSize = 0;
+	rel15->coreset.InterleaverSize = 0;
+	rel15->coreset.ShiftIndex = 0;
+      }
+      rel15->coreset.CoreSetType = 1;
+      rel15->coreset.precoder_granularity = mac->coreset[0][0]->precoderGranularity;
+      if (mac->coreset[0][0]->pdcch_DMRS_ScramblingID)
+	rel15->coreset.pdcch_dmrs_scrambling_id = *mac->coreset[0][0]->pdcch_DMRS_ScramblingID;
+      else
+	rel15->coreset.pdcch_dmrs_scrambling_id = *mac->scc->physCellId;
+      fill_dci_search_candidates(mac->SSpace[0][0][ss_id],rel15);
+      rel15->dci_format = NR_DL_DCI_FORMAT_1_0;
+      rel15->dci_length = nr_dci_size(rel15->dci_format,NR_RNTI_C,rel15->BWPSize);
+      dl_config->dl_config_list[dl_config->number_pdus].pdu_type = FAPI_NR_DL_CONFIG_TYPE_DCI;
+      dl_config->number_pdus = dl_config->number_pdus + 1;
+    }
+  }
+}
+
+
+
+