use BWP specific SS and coreset structures

openair2/LAYER2/NR_MAC_UE/config_ue.c

@@ -434,18 +434,6 @@ void config_common_ue(NR_UE_MAC_INST_t *mac,
   cfg->prach_config.ssb_per_rach = rach_ConfigCommon->ssb_perRACH_OccasionAndCB_PreamblesPerSSB->present-1;
 }
 
-/** \brief This function is relavant for the UE procedures for control. It loads the search spaces, the BWPs and the CORESETs into the MAC instance and
-    \brief performs assert checks on the relevant RRC configuration.
-    @param NR_UE_MAC_INST_t mac: pointer to local MAC instance
-    @returns void
-    */
-void config_control_ue(NR_UE_MAC_INST_t *mac)
-{
-  NR_ServingCellConfig_t *scd = mac->cg->spCellConfig->spCellConfigDedicated;
-  NR_BWP_Id_t dl_bwp_id = mac->current_DL_BWP.bwp_id;
-
-  configure_ss_coreset(mac, scd, dl_bwp_id);
-}
 
 NR_SearchSpace_t *get_common_search_space(struct NR_PDCCH_ConfigCommon__commonSearchSpaceList *commonSearchSpaceList,
                                           NR_UE_MAC_INST_t *mac,
@@ -465,9 +453,12 @@ NR_SearchSpace_t *get_common_search_space(struct NR_PDCCH_ConfigCommon__commonSe
   return css;
 }
 
-void configure_common_ss(NR_UE_MAC_INST_t *mac,
-                         NR_PDCCH_ConfigCommon_t *pdcch_ConfigCommon)
+void configure_ss_coreset(NR_UE_MAC_INST_t *mac,
+                          NR_PDCCH_ConfigCommon_t *pdcch_ConfigCommon,
+                          NR_PDCCH_Config_t *pdcch_Config)
 {
+
+  // configuration of search spaces
   if (pdcch_ConfigCommon) {
     mac->otherSI_SS = pdcch_ConfigCommon->searchSpaceOtherSystemInformation ?
                       get_common_search_space(pdcch_ConfigCommon->commonSearchSpaceList, mac,
@@ -482,75 +473,47 @@ void configure_common_ss(NR_UE_MAC_INST_t *mac,
                                              *pdcch_ConfigCommon->pagingSearchSpace) :
                      NULL;
   }
-}
-
-
-void configure_ss_coreset(NR_UE_MAC_INST_t *mac,
-                          NR_ServingCellConfig_t *scd,
-                          NR_BWP_Id_t dl_bwp_id)
-{
-  NR_BWP_DownlinkCommon_t *bwp_Common = get_bwp_downlink_common(mac, dl_bwp_id);
-  AssertFatal(bwp_Common != NULL, "bwp_Common is null\n");
-
-  NR_SetupRelease_PDCCH_ConfigCommon_t *pdcch_ConfigCommon = bwp_Common->pdcch_ConfigCommon;
-  AssertFatal(pdcch_ConfigCommon != NULL, "pdcch_ConfigCommon is null\n");
-
-  // configuring eventual common coreset
-  NR_ControlResourceSet_t *coreset = pdcch_ConfigCommon->choice.setup->commonControlResourceSet;
-  if (coreset)
-    mac->coreset[dl_bwp_id][coreset->controlResourceSetId - 1] = coreset;
-
-  NR_BWP_DownlinkDedicated_t *dl_bwp_Dedicated = dl_bwp_id>0 ? scd->downlinkBWP_ToAddModList->list.array[dl_bwp_id - 1]->bwp_Dedicated:
-                                                               scd->initialDownlinkBWP;
-
-  AssertFatal(dl_bwp_Dedicated != NULL, "dl_bwp_Dedicated is null\n");
-
-  NR_SetupRelease_PDCCH_Config_t *pdcch_Config = dl_bwp_Dedicated->pdcch_Config;
-  AssertFatal(pdcch_Config != NULL, "pdcch_Config is null\n");
-
-  struct NR_PDCCH_Config__controlResourceSetToAddModList *controlResourceSetToAddModList = pdcch_Config->choice.setup->controlResourceSetToAddModList;
-  AssertFatal(controlResourceSetToAddModList != NULL, "controlResourceSetToAddModList is null\n");
-
-  // configuring dedicated coreset
-  // In case network reconfigures control resource set with the same ControlResourceSetId as used for commonControlResourceSet configured via PDCCH-ConfigCommon,
-  // the configuration from PDCCH-Config always takes precedence
-  for (int i=0; i<controlResourceSetToAddModList->list.count; i++) {
-    coreset = controlResourceSetToAddModList->list.array[i];
-    mac->coreset[dl_bwp_id][coreset->controlResourceSetId - 1] = coreset;
+  if(pdcch_Config &&
+     pdcch_Config->searchSpacesToAddModList) {
+    int ss_configured = 0;
+    struct NR_PDCCH_Config__searchSpacesToAddModList *searchSpacesToAddModList = pdcch_Config->searchSpacesToAddModList;
+    for (int i = 0; i < searchSpacesToAddModList->list.count; i++) {
+      AssertFatal(ss_configured < FAPI_NR_MAX_SS, "Attempting to configure %d SS but only %d per BWP are allowed",
+                  ss_configured + 1, FAPI_NR_MAX_SS);
+      mac->BWP_searchspaces[ss_configured] = searchSpacesToAddModList->list.array[i];
+      ss_configured++;
+    }
+    for (int i = ss_configured; i < FAPI_NR_MAX_SS; i++)
+      mac->BWP_searchspaces[i] = NULL;
   }
 
-  struct NR_PDCCH_Config__searchSpacesToAddModList *searchSpacesToAddModList = pdcch_Config->choice.setup->searchSpacesToAddModList;
-  AssertFatal(searchSpacesToAddModList != NULL, "searchSpacesToAddModList is null\n");
-  AssertFatal(searchSpacesToAddModList->list.count > 0, "list of UE specifically configured Search Spaces is empty\n");
-  AssertFatal(searchSpacesToAddModList->list.count < FAPI_NR_MAX_SS_PER_BWP, "too many searchpaces per coreset %d\n", searchSpacesToAddModList->list.count);
-
-  // check available Search Spaces in the searchSpacesToAddModList and pass to MAC
-  // note: the network configures at most 10 Search Spaces per BWP per cell (including UE-specific and common Search Spaces).
-  for (int ss_id = 0; ss_id < searchSpacesToAddModList->list.count; ss_id++) {
-    NR_SearchSpace_t *ss = searchSpacesToAddModList->list.array[ss_id];
-    AssertFatal(ss->controlResourceSetId != NULL, "ss->controlResourceSetId is null\n");
-    AssertFatal(ss->searchSpaceType != NULL, "ss->searchSpaceType is null\n");
-    AssertFatal(ss->monitoringSymbolsWithinSlot != NULL, "NR_SearchSpace->monitoringSymbolsWithinSlot is null\n");
-    AssertFatal(ss->monitoringSymbolsWithinSlot->buf != NULL, "NR_SearchSpace->monitoringSymbolsWithinSlot->buf is null\n");
-    AssertFatal(ss->searchSpaceId <= FAPI_NR_MAX_SS, "Invalid searchSpaceId\n");
-    mac->SSpace[dl_bwp_id][ss->searchSpaceId - 1] = ss;
+  // configuration of coresets
+  int cset_configured = 0;
+  int common_cset_id = -1;
+  if (pdcch_ConfigCommon &&
+      pdcch_ConfigCommon->commonControlResourceSet) {
+    mac->BWP_coresets[cset_configured] = pdcch_ConfigCommon->commonControlResourceSet;
+    common_cset_id = pdcch_ConfigCommon->commonControlResourceSet->controlResourceSetId;
+    cset_configured++;
   }
-
-  struct NR_PDCCH_ConfigCommon__commonSearchSpaceList *commonSearchSpaceList = pdcch_ConfigCommon->choice.setup->commonSearchSpaceList;
-  AssertFatal(commonSearchSpaceList != NULL, "commonSearchSpaceList is null\n");
-  AssertFatal(commonSearchSpaceList->list.count > 0, "PDCCH CSS list has 0 elements\n");
-
-  // Check available CSSs in the commonSearchSpaceList (list of additional common search spaces)
-  // note: commonSearchSpaceList SIZE(1..4)
-  for (int css_id = 0; css_id < commonSearchSpaceList->list.count; css_id++) {
-    NR_SearchSpace_t *css = commonSearchSpaceList->list.array[css_id];
-    AssertFatal(css->controlResourceSetId != NULL, "ss->controlResourceSetId is null\n");
-    AssertFatal(css->searchSpaceType != NULL, "css->searchSpaceType is null\n");
-    AssertFatal(css->monitoringSymbolsWithinSlot != NULL, "css->monitoringSymbolsWithinSlot is null\n");
-    AssertFatal(css->monitoringSymbolsWithinSlot->buf != NULL, "css->monitoringSymbolsWithinSlot->buf is null\n");
-    AssertFatal(css->searchSpaceId <= FAPI_NR_MAX_SS, "Invalid searchSpaceId\n");
-    mac->SSpace[dl_bwp_id][css->searchSpaceId - 1] = css;
+  if(pdcch_Config &&
+     pdcch_Config->controlResourceSetToAddModList) {
+    struct NR_PDCCH_Config__controlResourceSetToAddModList *controlResourceSetToAddModList = pdcch_Config->controlResourceSetToAddModList;
+    for (int i = 0; i < controlResourceSetToAddModList->list.count; i++) {
+      AssertFatal(cset_configured < FAPI_NR_MAX_CORESET_PER_BWP, "Attempting to configure %d CORESET but only %d per BWP are allowed",
+                  cset_configured + 1, FAPI_NR_MAX_CORESET_PER_BWP);
+      // In case network reconfigures control resource set with the same ControlResourceSetId as used for commonControlResourceSet
+      // configured via PDCCH-ConfigCommon, the configuration from PDCCH-Config always takes precedence
+      if (controlResourceSetToAddModList->list.array[i]->controlResourceSetId == common_cset_id)
+        mac->BWP_coresets[0] = controlResourceSetToAddModList->list.array[i];
+      else {
+        mac->BWP_coresets[cset_configured] = controlResourceSetToAddModList->list.array[i];
+        cset_configured++;
+      }
+    }
   }
+  for (int i = cset_configured; i < FAPI_NR_MAX_CORESET_PER_BWP; i++)
+    mac->BWP_coresets[i] = NULL;
 }
 
 // todo handle mac_LogicalChannelConfig
@@ -602,7 +565,7 @@ void configure_current_BWP(NR_UE_MAC_INST_t *mac,
     if (bwp_ulcommon->rach_ConfigCommon)
       UL_BWP->rach_ConfigCommon = bwp_ulcommon->rach_ConfigCommon->choice.setup;
     if (bwp_dlcommon->pdcch_ConfigCommon)
-      configure_common_ss(mac, bwp_dlcommon->pdcch_ConfigCommon->choice.setup);
+      configure_ss_coreset(mac, bwp_dlcommon->pdcch_ConfigCommon->choice.setup, NULL);
   }
 
   if(cell_group_config) {
@@ -648,15 +611,19 @@ void configure_current_BWP(NR_UE_MAC_INST_t *mac,
         dl_genericParameters = bwp_downlink->bwp_Common->genericParameters;
         DL_BWP->pdsch_Config = bwp_downlink->bwp_Dedicated->pdsch_Config->choice.setup;
         DL_BWP->tdaList_Common = bwp_downlink->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
-        if (bwp_downlink->bwp_Common->pdcch_ConfigCommon)
-          configure_common_ss(mac, bwp_downlink->bwp_Common->pdcch_ConfigCommon->choice.setup);
+        configure_ss_coreset(mac,
+                             bwp_downlink->bwp_Common->pdcch_ConfigCommon ? bwp_downlink->bwp_Common->pdcch_ConfigCommon->choice.setup : NULL,
+                             bwp_downlink->bwp_Dedicated->pdcch_Config ? bwp_downlink->bwp_Dedicated->pdcch_Config->choice.setup : NULL);
+
       }
       else {
         dl_genericParameters = bwp_dlcommon->genericParameters;
         DL_BWP->pdsch_Config = spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup;
         DL_BWP->tdaList_Common = bwp_dlcommon->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
-        if (bwp_dlcommon->pdcch_ConfigCommon)
-          configure_common_ss(mac, bwp_dlcommon->pdcch_ConfigCommon->choice.setup);
+        configure_ss_coreset(mac,
+                             bwp_dlcommon->pdcch_ConfigCommon ? bwp_dlcommon->pdcch_ConfigCommon->choice.setup : NULL,
+                             spCellConfigDedicated->initialDownlinkBWP->pdcch_Config ? spCellConfigDedicated->initialDownlinkBWP->pdcch_Config->choice.setup : NULL);
+
       }
 
       UL_BWP->msg3_DeltaPreamble = bwp_ulcommon->pusch_ConfigCommon->choice.setup->msg3_DeltaPreamble;
@@ -783,7 +750,6 @@ void nr_rrc_mac_config_req_mcg(module_id_t module_id,
         mac->scheduling_info.retxBSR_SF);
 
   configure_current_BWP(mac, NULL, cell_group_config);
-  config_control_ue(mac);
 
   RA_config_t *ra = &mac->ra;
   if (cell_group_config->spCellConfig && cell_group_config->spCellConfig->reconfigurationWithSync) {
@@ -845,7 +811,6 @@ void nr_rrc_mac_config_req_scg(module_id_t module_id,
     LOG_I(MAC,"Configuring CRNTI %x\n",mac->crnti);
   }
   configure_current_BWP(mac, NULL, scell_group_config);
-  config_control_ue(mac);
   // Setup the SSB to Rach Occasions mapping according to the config
   build_ssb_to_ro_map(mac);
 }

openair2/LAYER2/NR_MAC_UE/mac_defs.h

@@ -409,11 +409,13 @@ typedef struct {
   NR_UE_UL_BWP_t current_UL_BWP;
   NR_UL_TIME_ALIGNMENT_t ul_time_alignment;
 
-  NR_ControlResourceSet_t *coreset[MAX_NUM_BWP_UE][FAPI_NR_MAX_CORESET_PER_BWP];
-  NR_SearchSpace_t *SSpace[MAX_NUM_BWP_UE][FAPI_NR_MAX_SS];
   NR_SearchSpace_t *otherSI_SS;
   NR_SearchSpace_t *ra_SS;
   NR_SearchSpace_t *paging_SS;
+  NR_ControlResourceSet_t *BWP_coresets[FAPI_NR_MAX_CORESET_PER_BWP];
+  NR_ControlResourceSet_t *coreset0;
+  NR_SearchSpace_t *BWP_searchspaces[FAPI_NR_MAX_SS];
+  NR_SearchSpace_t *search_space_zero;
 
   bool phy_config_request_sent;
   frame_type_t frame_type;
@@ -467,8 +469,6 @@ typedef struct {
   uint8_t PHR_reporting_active;
 
   NR_Type0_PDCCH_CSS_config_t type0_PDCCH_CSS_config;
-  NR_SearchSpace_t *search_space_zero;
-  NR_ControlResourceSet_t *coreset0;
   frequency_range_t frequency_range;
   uint16_t nr_band;
   uint8_t ssb_subcarrier_offset;

openair2/LAYER2/NR_MAC_UE/mac_proto.h

@@ -250,11 +250,10 @@ int nr_write_ce_ulsch_pdu(uint8_t *mac_ce,
                           NR_BSR_LONG  *long_bsr);
 
 void config_dci_pdu(NR_UE_MAC_INST_t *mac,
-                    fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15,
                     fapi_nr_dl_config_request_t *dl_config,
                     int rnti_type,
                     int slot,
-                    int ss_id);
+                    NR_SearchSpace_t *ss);
 
 void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl_config, frame_t frame, int slot);
 
@@ -429,10 +428,6 @@ void build_ssb_to_ro_map(NR_UE_MAC_INST_t *mac);
 
 void ue_init_config_request(NR_UE_MAC_INST_t *mac, int scs);
 
-void configure_ss_coreset(NR_UE_MAC_INST_t *mac,
-                          NR_ServingCellConfig_t *scd,
-                          NR_BWP_Id_t dl_bwp_id);
-
 static uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
                                    nr_dci_format_t dci_format,
                                    uint8_t dci_size,

openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c

@@ -83,12 +83,26 @@ void fill_dci_search_candidates(NR_SearchSpace_t *ss,
   }
 }
 
+NR_ControlResourceSet_t *ue_get_coreset(NR_UE_MAC_INST_t *mac, int coreset_id)
+{
+  NR_ControlResourceSet_t *coreset = NULL;
+  for (int i = 0; i < FAPI_NR_MAX_CORESET_PER_BWP; i++) {
+    if (mac->BWP_coresets[i] != NULL &&
+        mac->BWP_coresets[i]->controlResourceSetId == coreset_id) {
+      coreset = mac->BWP_coresets[i];
+      break;
+    }
+  }
+  AssertFatal(coreset, "Couldn't find coreset with id %d\n", coreset_id);
+  return coreset;
+}
+
+
 void config_dci_pdu(NR_UE_MAC_INST_t *mac,
-                    fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15,
                     fapi_nr_dl_config_request_t *dl_config,
                     int rnti_type,
                     int slot,
-                    int ss_id)
+                    NR_SearchSpace_t *ss)
 {
 
   uint16_t monitoringSymbolsWithinSlot = 0;
@@ -98,33 +112,16 @@ void config_dci_pdu(NR_UE_MAC_INST_t *mac,
   NR_UE_UL_BWP_t *current_UL_BWP = &mac->current_UL_BWP;
   NR_BWP_Id_t dl_bwp_id = current_DL_BWP ? current_DL_BWP->bwp_id : 0;
 
-  NR_SearchSpace_t *ss;
-  NR_ControlResourceSet_t *coreset;
-  if(ss_id>=0) {
-    if (rnti_type == NR_RNTI_TC || rnti_type == NR_RNTI_RA) {
-      ss = mac->ra_SS;
-      AssertFatal(mac->ra_SS->searchSpaceId == ss_id,
-                  "Search Space id %d does not correspond to the one in ra_ss %ld for RA procedures\n",
-                  ss_id, mac->ra_SS->searchSpaceId);
-    }
-    else
-      ss = mac->SSpace[dl_bwp_id][ss_id-1];
-  }
-  else
-    ss = mac->search_space_zero;
-
-  uint8_t coreset_id = *ss->controlResourceSetId;
+  fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15;
 
+  int coreset_id = *ss->controlResourceSetId;
+  NR_ControlResourceSet_t *coreset;
   if(coreset_id > 0) {
-    coreset = mac->coreset[dl_bwp_id][coreset_id - 1];
+    coreset = ue_get_coreset(mac, coreset_id);
     rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG;
   } else {
     coreset = mac->coreset0;
-    if(rnti_type == NR_RNTI_SI) {
-      rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_MIB_SIB1;
-    } else {
-      rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG_CSET_0;
-    }
+    rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_MIB_SIB1;
   }
 
   rel15->coreset.duration = coreset->duration;
@@ -293,9 +290,8 @@ void config_dci_pdu(NR_UE_MAC_INST_t *mac,
 void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl_config, frame_t frame, int slot) {
 
   RA_config_t *ra = &mac->ra;
-  int ss_id;
-
   uint8_t bwp_id = mac->current_DL_BWP.bwp_id;
+
   NR_ServingCellConfig_t *scd = mac->cg->spCellConfig->spCellConfigDedicated;
   NR_BWP_DownlinkDedicated_t *bwpd = bwp_id > 0 ? scd->downlinkBWP_ToAddModList->list.array[bwp_id - 1]->bwp_Dedicated:
                                                   scd->initialDownlinkBWP;
@@ -305,16 +301,14 @@ void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl
 
   // loop over all available SS for bwp_id
   if (bwpd) {
-      for (ss_id = 1; ss_id <= FAPI_NR_MAX_SS; ss_id++){
+      for (int ss_id = 0; ss_id < FAPI_NR_MAX_SS; ss_id++){
 
-        if(mac->SSpace[bwp_id][ss_id-1]==NULL) {
+        if(mac->BWP_searchspaces[ss_id]==NULL) {
           continue;
         }
 
 	LOG_D(NR_MAC, "[DCI_CONFIG] ss_id %d\n",ss_id);
-	NR_SearchSpace_t *ss = mac->SSpace[bwp_id][ss_id-1];
-        AssertFatal(ss_id == ss->searchSpaceId,"SS IDs don't correspond\n");
-	fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15;
+	NR_SearchSpace_t *ss = mac->BWP_searchspaces[ss_id];
 	NR_SetupRelease_PDCCH_ConfigCommon_t *pdcch_ConfigCommon = bwp_Common->pdcch_ConfigCommon;
 	struct NR_PhysicalCellGroupConfig *phy_cgc = mac->cg->physicalCellGroupConfig;
 	switch (ss->searchSpaceType->present){
@@ -329,14 +323,14 @@ void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl
 		case WAIT_RAR:
 		  LOG_D(NR_MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type1-PDCCH common random access search space (RA-Msg2)\n");
 		  if (get_softmodem_params()->sa) {
-		    config_dci_pdu(mac, rel15, dl_config, NR_RNTI_RA, slot, -1);
+		    config_dci_pdu(mac, dl_config, NR_RNTI_RA, slot, mac->ra_SS);
 		  } else {
-		    config_dci_pdu(mac, rel15, dl_config, NR_RNTI_RA, slot, ss_id);
+		    config_dci_pdu(mac, dl_config, NR_RNTI_RA, slot, ss);
 		  }
 		  break;
 		case WAIT_CONTENTION_RESOLUTION:
 		  LOG_D(NR_MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type1-PDCCH common random access search space (RA-Msg4)\n");
-		  config_dci_pdu(mac, rel15, dl_config, NR_RNTI_TC, slot, -1);
+		  config_dci_pdu(mac, dl_config, NR_RNTI_TC, slot, mac->ra_SS);
 		  break;
 		default:
 		  break;
@@ -404,7 +398,7 @@ void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl
               mac->crnti > 0) {
 	      // Monitors DCI 01 and 11 scrambled with C-RNTI, or CS-RNTI(s), or SP-CSI-RNTI
             LOG_D(NR_MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in the user specific search space\n");
-            config_dci_pdu(mac, rel15, dl_config, NR_RNTI_C, slot, ss_id);
+            config_dci_pdu(mac, dl_config, NR_RNTI_C, slot, ss);
 
 //#ifdef DEBUG_DCI
 		LOG_D(NR_MAC, "[DCI_CONFIG] ss %d ue_Specific %p searchSpaceType->present %d dci_Formats %d\n",

openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c

@@ -978,9 +978,8 @@ void nr_ue_dl_scheduler(nr_downlink_indication_t *dl_info)
     if (mac->ra.ra_state >= WAIT_RAR) {
       if(mac->ul_time_alignment.ta_apply)
         schedule_ta_command(dl_config, &mac->ul_time_alignment);
-      fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15;
-      config_dci_pdu(mac, rel15, dl_config, mac->ra.ra_state == WAIT_RAR ? NR_RNTI_RA : NR_RNTI_TC , rx_slot, mac->ra_SS->searchSpaceId);
-      LOG_D(MAC,"mac->cg %p: Calling fill_scheduled_response rnti %x, type0_pdcch, num_pdus %d\n",mac->cg,rel15->rnti,dl_config->number_pdus);
+      config_dci_pdu(mac, dl_config, mac->ra.ra_state == WAIT_RAR ? NR_RNTI_RA : NR_RNTI_TC , rx_slot, mac->ra_SS);
+      LOG_D(MAC,"mac->cg %p: Calling fill_scheduled_response for type0_pdcch, num_pdus %d\n", mac->cg, dl_config->number_pdus);
       fill_scheduled_response(&scheduled_response, dl_config, NULL, NULL, mod_id, cc_id, rx_frame, rx_slot, dl_info->phy_data);
       if(mac->if_module != NULL && mac->if_module->scheduled_response != NULL)
         mac->if_module->scheduled_response(&scheduled_response);
@@ -2622,18 +2621,18 @@ void nr_ue_sib1_scheduler(module_id_t module_idP,
     frame_s = 0; // same frame as ssb
     slot_s = mac->type0_PDCCH_CSS_config.n_c;
   }
-  fapi_nr_dl_config_request_t *dl_config = &mac->dl_config_request[0]; // Take the first dl_config_request for SIB1
-  fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15;
-
-  if(mac->search_space_zero == NULL) mac->search_space_zero=calloc(1,sizeof(*mac->search_space_zero));
-  if(mac->coreset0 == NULL) mac->coreset0 = calloc(1,sizeof(*mac->coreset0));
 
+  if(mac->search_space_zero == NULL)
+    mac->search_space_zero=calloc(1,sizeof(*mac->search_space_zero));
+  if(mac->coreset0 == NULL)
+    mac->coreset0 = calloc(1,sizeof(*mac->coreset0));
   fill_coresetZero(mac->coreset0, &mac->type0_PDCCH_CSS_config);
   fill_searchSpaceZero(mac->search_space_zero, &mac->type0_PDCCH_CSS_config);
-  rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15;
-  config_dci_pdu(mac, rel15, dl_config, NR_RNTI_SI, slot_s, -1);
 
-  LOG_D(MAC,"Calling fill_scheduled_response, type0_pdcch, num_pdus %d\n",dl_config->number_pdus);
+  fapi_nr_dl_config_request_t *dl_config = &mac->dl_config_request[0]; // Take the first dl_config_request for SIB1
+  config_dci_pdu(mac, dl_config, NR_RNTI_SI, slot_s, mac->search_space_zero);
+
+  LOG_D(MAC,"Calling fill_scheduled_response, type0_pdcch, num_pdus %d\n", dl_config->number_pdus);
   fill_scheduled_response(&scheduled_response, dl_config, NULL, NULL, module_idP, cc_id, frame_s, slot_s, phy_data);
 
   if (dl_config->number_pdus) {