diff --git a/openair1/SCHED_NR_UE/phy_procedures_nr_ue.c b/openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
index bf39d092bf65c08f525eb5d5a6b02b791f53db08..af429480e0705b32c845318cfceb426d9cf914e8 100644
--- a/openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
+++ b/openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
@@ -1178,23 +1178,23 @@ void nr_ue_dlsch_procedures(PHY_VARS_NR_UE *ue,
         const double N_TA_max = Ta_max * bw_scaling * tc_factor;
 
         NR_UE_MAC_INST_t *mac = get_mac_inst(0);
-        NR_BWP_Id_t ul_bwp = mac->UL_BWP_Id;
-        NR_BWP_Id_t dl_bwp = mac->DL_BWP_Id;
+        NR_BWP_Id_t dl_bwp = (mac->DL_BWP_Id == 0)?  1 : mac->DL_BWP_Id ; 
+        NR_BWP_Id_t ul_bwp= (mac->UL_BWP_Id == 0)?  1 : mac->UL_BWP_Id ;
 
         NR_PUSCH_TimeDomainResourceAllocationList_t *pusch_TimeDomainAllocationList = NULL;
-        if (mac->ULbwp[ul_bwp] &&
-            mac->ULbwp[ul_bwp]->bwp_Dedicated &&
-            mac->ULbwp[ul_bwp]->bwp_Dedicated->pusch_Config &&
-            mac->ULbwp[ul_bwp]->bwp_Dedicated->pusch_Config->choice.setup &&
-            mac->ULbwp[ul_bwp]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList) {
-          pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList->choice.setup;
+        if (mac->ULbwp[ul_bwp-1] &&
+            mac->ULbwp[ul_bwp-1]->bwp_Dedicated &&
+            mac->ULbwp[ul_bwp-1]->bwp_Dedicated->pusch_Config &&
+            mac->ULbwp[ul_bwp-1]->bwp_Dedicated->pusch_Config->choice.setup &&
+            mac->ULbwp[ul_bwp-1]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList) {
+          pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp-1]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList->choice.setup;
         }
-        else if (mac->ULbwp[ul_bwp] &&
-                 mac->ULbwp[ul_bwp]->bwp_Common &&
-                 mac->ULbwp[ul_bwp]->bwp_Common->pusch_ConfigCommon &&
-                 mac->ULbwp[ul_bwp]->bwp_Common->pusch_ConfigCommon->choice.setup &&
-                 mac->ULbwp[ul_bwp]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
-          pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
+        else if (mac->ULbwp[ul_bwp-1] &&
+                 mac->ULbwp[ul_bwp-1]->bwp_Common &&
+                 mac->ULbwp[ul_bwp-1]->bwp_Common->pusch_ConfigCommon &&
+                 mac->ULbwp[ul_bwp-1]->bwp_Common->pusch_ConfigCommon->choice.setup &&
+                 mac->ULbwp[ul_bwp-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
+          pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
         }
         else if (mac->scc_SIB &&
                  mac->scc_SIB->uplinkConfigCommon &&
@@ -1205,12 +1205,12 @@ void nr_ue_dlsch_procedures(PHY_VARS_NR_UE *ue,
         }
         long mapping_type_ul = pusch_TimeDomainAllocationList ? pusch_TimeDomainAllocationList->list.array[0]->mappingType : NR_PUSCH_TimeDomainResourceAllocation__mappingType_typeA;
 
-        NR_PDSCH_Config_t *pdsch_Config = (mac->DLbwp[dl_bwp] && mac->DLbwp[dl_bwp]->bwp_Dedicated->pdsch_Config->choice.setup) ? mac->DLbwp[dl_bwp]->bwp_Dedicated->pdsch_Config->choice.setup : NULL;
+        NR_PDSCH_Config_t *pdsch_Config = (mac->DLbwp[dl_bwp-1] && mac->DLbwp[dl_bwp-1]->bwp_Dedicated->pdsch_Config->choice.setup) ? mac->DLbwp[dl_bwp-1]->bwp_Dedicated->pdsch_Config->choice.setup : NULL;
         NR_PDSCH_TimeDomainResourceAllocationList_t *pdsch_TimeDomainAllocationList = NULL;
-        if (mac->DLbwp[dl_bwp] && mac->DLbwp[dl_bwp]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
+        if (mac->DLbwp[dl_bwp-1] && mac->DLbwp[dl_bwp-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
           pdsch_TimeDomainAllocationList = pdsch_Config->pdsch_TimeDomainAllocationList->choice.setup;
-        else if (mac->DLbwp[dl_bwp] && mac->DLbwp[dl_bwp]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
-          pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
+        else if (mac->DLbwp[dl_bwp-1] && mac->DLbwp[dl_bwp-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
+          pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
         else if (mac->scc_SIB && mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup)
           pdsch_TimeDomainAllocationList = mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
         long mapping_type_dl = pdsch_TimeDomainAllocationList ? pdsch_TimeDomainAllocationList->list.array[0]->mappingType : NR_PDSCH_TimeDomainResourceAllocation__mappingType_typeA;
diff --git a/openair1/SCHED_NR_UE/pucch_uci_ue_nr.c b/openair1/SCHED_NR_UE/pucch_uci_ue_nr.c
index 8a62802f358c67fd129334233f4d6d7f06fc6b50..468f4716a91d26371867a8cac5d350fe830562e2 100644
--- a/openair1/SCHED_NR_UE/pucch_uci_ue_nr.c
+++ b/openair1/SCHED_NR_UE/pucch_uci_ue_nr.c
@@ -504,7 +504,7 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
       if (pucch_resource_set != MAX_NB_OF_PUCCH_RESOURCE_SETS) {
         pucch_resource_indicator = 0;
         /* get the first resource of the set */
-        pucch_resource_id = mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[pucch_resource_set]->resourceList.list.array[pucch_resource_indicator][0];
+        pucch_resource_id = mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[pucch_resource_set]->resourceList.list.array[pucch_resource_indicator][0];
       }
       else {
         LOG_W(PHY,"PUCCH no resource set found for CSI at line %d in function %s of file %s \n", LINE_FILE , __func__, FILE_NAME);
@@ -616,13 +616,13 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
       }
       NR_PUCCH_Config_t *pucch_Config;
       if (bwp_id>0 &&
-          mac->ULbwp[bwp_id] &&
-          mac->ULbwp[bwp_id]->bwp_Dedicated &&
-          mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config &&
-          mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup) {
-        pucch_Config =  mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup;
-        BWPsize  =  NRRIV2BW(mac->ULbwp[bwp_id]->bwp_Common->genericParameters.locationAndBandwidth,MAX_BWP_SIZE);
-        BWPstart =  NRRIV2PRBOFFSET(mac->ULbwp[bwp_id]->bwp_Common->genericParameters.locationAndBandwidth,MAX_BWP_SIZE);
+          mac->ULbwp[bwp_id-1] &&
+          mac->ULbwp[bwp_id-1]->bwp_Dedicated &&
+          mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config &&
+          mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup) {
+        pucch_Config =  mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup;
+        BWPsize  =  NRRIV2BW(mac->ULbwp[bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth,MAX_BWP_SIZE);
+        BWPstart =  NRRIV2PRBOFFSET(mac->ULbwp[bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth,MAX_BWP_SIZE);
       }
       else if (bwp_id==0 &&
                mac->cg &&
@@ -654,12 +654,12 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
       m_0 = get_ics_pucch(pucch_resource, format);
       AssertFatal(m_0 >= 0, "Invalid m_0\n");
       if (format == pucch_format3_nr) {
-        if (mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format3->choice.setup->additionalDMRS[0] == 1) {
+        if (mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format3->choice.setup->additionalDMRS[0] == 1) {
           index_additional_dmrs = I_PUCCH_ADDITIONAL_DMRS;
         }
       }
       else if (format == pucch_format4_nr) {
-        if (mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format4->choice.setup->additionalDMRS[0] == 1) {
+        if (mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format4->choice.setup->additionalDMRS[0] == 1) {
           index_additional_dmrs = I_PUCCH_ADDITIONAL_DMRS;
         }
       }
@@ -707,7 +707,7 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
     case pucch_format3_nr:
     {
       nb_of_prbs = pucch_resource->format.choice.format3->nrofPRBs;
-      //if (mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format3->choice.setup->pi2BPSK[0] == 1) {
+      //if (mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format3->choice.setup->pi2BPSK[0] == 1) {
       //  Q_m = BITS_PER_SYMBOL_BPSK; /* set bpsk modulation type with 1 bit per modulation symbol */
       //}
       N_sc_ctrl_RB = N_SC_RB;
@@ -716,7 +716,7 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
     }
     case pucch_format4_nr:
     {
-      //if (mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format4->choice.setup->pi2BPSK[0] == 1) {
+      //if (mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format4->choice.setup->pi2BPSK[0] == 1) {
       //  Q_m = BITS_PER_SYMBOL_BPSK; /* set bpsk modulation type with 1 bit per modulation symbol */
       //}
       nb_symbols = nb_symbols_excluding_dmrs[nb_symbols_total-4][index_additional_dmrs][index_hopping];
@@ -733,10 +733,10 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
   /* drop CSI report if simultaneous HARQ-ACK/SR and periodic/semi-periodic CSI cannot be transmitted at the same time */
   if (format !=  pucch_format0_nr) {
 
-    if (mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format1 != NULL) {
-      //max_code_rate = code_rate_r_time_100[mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format1->choice.setup->maxCodeRate[0]]; /* it is code rate * 10 */
+    if (mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format1 != NULL) {
+      //max_code_rate = code_rate_r_time_100[mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format1->choice.setup->maxCodeRate[0]]; /* it is code rate * 10 */
 
-      if ((O_ACK != 0) && (mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->format1->choice.setup->simultaneousHARQ_ACK_CSI[0] == 0)) {
+      if ((O_ACK != 0) && (mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->format1->choice.setup->simultaneousHARQ_ACK_CSI[0] == 0)) {
         N_UCI = N_UCI - O_CSI;
         O_CSI = cqi_status = ri_status = 0;
         csi_payload = 0; /* csi should be dropped in this case */
@@ -861,11 +861,11 @@ bool pucch_procedures_ue_nr(PHY_VARS_NR_UE *ue, uint8_t gNB_id, UE_nr_rxtx_proc_
   switch(format) {
     case pucch_format0_nr:
     {
-      int pucch_GroupHopping = mac->ULbwp[bwp_id] ?
-            mac->ULbwp[bwp_id]->bwp_Common->pucch_ConfigCommon->choice.setup->pucch_GroupHopping:
+      int pucch_GroupHopping = mac->ULbwp[bwp_id-1] ?
+            mac->ULbwp[bwp_id-1]->bwp_Common->pucch_ConfigCommon->choice.setup->pucch_GroupHopping:
             mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pucch_ConfigCommon->choice.setup->pucch_GroupHopping;
-      int hoppingId = mac->ULbwp[bwp_id] ?
-            mac->ULbwp[bwp_id]->bwp_Common->pucch_ConfigCommon->choice.setup->hoppingId[0]:
+      int hoppingId = mac->ULbwp[bwp_id-1] ?
+            mac->ULbwp[bwp_id-1]->bwp_Common->pucch_ConfigCommon->choice.setup->hoppingId[0]:
             (mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pucch_ConfigCommon->choice.setup->hoppingId?
              mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pucch_ConfigCommon->choice.setup->hoppingId[0]:
              mac->physCellId);
@@ -991,14 +991,13 @@ uint8_t get_downlink_ack(PHY_VARS_NR_UE *ue, uint8_t gNB_id,  UE_nr_rxtx_proc_t
   int N_m_c_rx = 0;
   int V_DAI_m_DL = 0;
   NR_UE_MAC_INST_t *mac = get_mac_inst(0);
-  NR_BWP_Id_t dl_bwp_id = mac->DL_BWP_Id; 
+  NR_BWP_Id_t dl_bwp_id = (mac->DL_BWP_Id == 0 ) ? 1: mac->DL_BWP_Id ;
 
-
-  if (mac->DLbwp[dl_bwp_id] &&
-      mac->DLbwp[dl_bwp_id]->bwp_Dedicated &&
-      mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config &&
-      mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup &&
-      mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->maxNrofCodeWordsScheduledByDCI[0] == 2) {
+  if (mac->DLbwp[dl_bwp_id-1] &&
+      mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated &&
+      mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config &&
+      mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup &&
+      mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->maxNrofCodeWordsScheduledByDCI[0] == 2) {
     two_transport_blocks = TRUE;
     number_of_code_word = 2;
   }
@@ -1078,7 +1077,7 @@ uint8_t get_downlink_ack(PHY_VARS_NR_UE *ue, uint8_t gNB_id,  UE_nr_rxtx_proc_t
    if (mac->cg != NULL &&
        mac->cg->physicalCellGroupConfig != NULL &&
        mac->cg->physicalCellGroupConfig->harq_ACK_SpatialBundlingPUCCH != NULL) {
-     int N_TB_max_DL = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->maxNrofCodeWordsScheduledByDCI[0];
+     int N_TB_max_DL = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->maxNrofCodeWordsScheduledByDCI[0];
      *n_HARQ_ACK = (((V_DAI_m_DL - U_DAI_c)%4) * N_TB_max_DL) + N_m_c_rx + N_SPS_c;
      NR_TST_PHY_PRINTF("PUCCH power n(%d) = ( V(%d) - U(%d) )mod4 * N_TB(%d) + N(%d) \n", *n_HARQ_ACK, V_DAI_m_DL, U_DAI_c, N_TB_max_DL, N_m_c_rx);
    }
@@ -1202,12 +1201,12 @@ boolean_t select_pucch_resource(PHY_VARS_NR_UE *ue, NR_UE_MAC_INST_t *mac, uint8
        mac->cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP->pucch_Config->choice.setup &&
        mac->cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP->pucch_Config->choice.setup->resourceSetToAddModList &&
        mac->cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP->pucch_Config->choice.setup->resourceSetToAddModList->list.array[0] == NULL) ||
-      (mac->ULbwp[bwp_id] &&
-       mac->ULbwp[bwp_id]->bwp_Dedicated &&
-       mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config &&
-       mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup &&
-       mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList &&
-       mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[0] == NULL)
+      (mac->ULbwp[bwp_id-1] &&
+       mac->ULbwp[bwp_id-1]->bwp_Dedicated &&
+       mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config &&
+       mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup &&
+       mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList &&
+       mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[0] == NULL)
       ){
 
     /* No resource set has been already configured so pucch_configCommon from Sib1 should be used in this case */
@@ -1275,10 +1274,10 @@ boolean_t select_pucch_resource(PHY_VARS_NR_UE *ue, NR_UE_MAC_INST_t *mac, uint8
         // Verify that the value of pucch_resource_indicator is valid
         struct NR_PUCCH_Config__resourceSetToAddModList *resourceSetToAddModList = NULL;
 	      struct NR_PUCCH_Config__resourceToAddModList *resourceToAddModList = NULL;
-        if (bwp_id > 0 && mac->ULbwp[bwp_id]) {
-           AssertFatal(mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList!=NULL,"mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList is null\n");
-           resourceSetToAddModList = mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList;
-           resourceToAddModList = mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceToAddModList;
+        if (bwp_id > 0 && mac->ULbwp[bwp_id-1]) {
+           AssertFatal(mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList!=NULL,"mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList is null\n");
+           resourceSetToAddModList = mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList;
+           resourceToAddModList = mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceToAddModList;
         } else if (bwp_id == 0 && mac->cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP->pucch_Config->choice.setup->resourceSetToAddModList!=NULL) {
 	        resourceSetToAddModList = mac->cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP->pucch_Config->choice.setup->resourceSetToAddModList;
           resourceToAddModList = mac->cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP->pucch_Config->choice.setup->resourceToAddModList;
@@ -1378,7 +1377,7 @@ boolean_t select_pucch_resource(PHY_VARS_NR_UE *ue, NR_UE_MAC_INST_t *mac, uint8
 int find_pucch_resource_set(NR_UE_MAC_INST_t *mac, uint8_t gNB_id, int uci_size)
 {
   int pucch_resource_set_id = 0;
-  NR_BWP_Id_t bwp_id = mac->DL_BWP_Id;
+  NR_BWP_Id_t bwp_id =  mac->DL_BWP_Id;
 
   //long *pucch_max_pl_bits = NULL;
 
@@ -1392,12 +1391,12 @@ int find_pucch_resource_set(NR_UE_MAC_INST_t *mac, uint8_t gNB_id, int uci_size)
   /* look for the first resource set which supports uci_size number of bits for payload */
   while (pucch_resource_set_id < MAX_NB_OF_PUCCH_RESOURCE_SETS) {
     if ((bwp_id>0 &&
-         mac->ULbwp[bwp_id] &&
-         mac->ULbwp[bwp_id]->bwp_Dedicated &&
-         mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config &&
-         mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup &&
-         mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList &&
-         mac->ULbwp[bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[pucch_resource_set_id] != NULL) ||
+         mac->ULbwp[bwp_id-1] &&
+         mac->ULbwp[bwp_id-1]->bwp_Dedicated &&
+         mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config &&
+         mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup &&
+         mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList &&
+         mac->ULbwp[bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[pucch_resource_set_id] != NULL) ||
         (bwp_id==0 &&
          mac->cg &&
          mac->cg->spCellConfig &&
diff --git a/openair2/LAYER2/NR_MAC_UE/config_ue.c b/openair2/LAYER2/NR_MAC_UE/config_ue.c
index 5f9dae6e6add144a0d4decd9aead5366376af126..c77d72e9e7d2d82f0dddbcb2a25dd04cb437b769 100755
--- a/openair2/LAYER2/NR_MAC_UE/config_ue.c
+++ b/openair2/LAYER2/NR_MAC_UE/config_ue.c
@@ -639,14 +639,14 @@ void config_control_ue(NR_UE_MAC_INST_t *mac){
 
   // check pdcch_Config, pdcch_ConfigCommon and DL BWP
   // Check dedicated UL BWP and pass to MAC
-  for (int num_BWP = 1; num_BWP < MAX_NUM_BWP ;num_BWP++)
+  for (int num_BWP = 0; num_BWP < MAX_NUM_BWP ;num_BWP++)
   {
-    mac->DLbwp[num_BWP] = scd->downlinkBWP_ToAddModList->list.array[num_BWP-1];
-    mac->ULbwp[num_BWP] = uplinkBWP_ToAddModList->list.array[num_BWP-1];
+    mac->DLbwp[num_BWP] = scd->downlinkBWP_ToAddModList->list.array[num_BWP];
+    mac->ULbwp[num_BWP] = uplinkBWP_ToAddModList->list.array[num_BWP];
   }
-  mac->coreset[dl_bwp_id][coreset_id - 1] = controlResourceSetToAddModList->list.array[0];
+  mac->coreset[dl_bwp_id-1][coreset_id - 1] = controlResourceSetToAddModList->list.array[0];
   
-  AssertFatal(mac->ULbwp[ul_bwp_id]->bwp_Dedicated != NULL, "UL bwp_Dedicated is null\n");
+  AssertFatal(mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated != NULL, "UL bwp_Dedicated is null\n");
 
   // 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).
@@ -654,10 +654,10 @@ void config_control_ue(NR_UE_MAC_INST_t *mac){
     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->controlResourceSetId == mac->coreset[dl_bwp_id][coreset_id - 1]->controlResourceSetId, "ss->controlResourceSetId is unknown\n");
+    AssertFatal(*ss->controlResourceSetId == mac->coreset[dl_bwp_id-1][coreset_id - 1]->controlResourceSetId, "ss->controlResourceSetId is unknown\n");
     AssertFatal(ss->monitoringSymbolsWithinSlot != NULL, "NR_SearchSpace->monitoringSymbolsWithinSlot is null\n");
     AssertFatal(ss->monitoringSymbolsWithinSlot->buf != NULL, "NR_SearchSpace->monitoringSymbolsWithinSlot->buf is null\n");
-    mac->SSpace[dl_bwp_id][0][ss_id] = ss;
+    mac->SSpace[dl_bwp_id-1][0][ss_id] = ss;
   }
 
   // Check available CSSs in the commonSearchSpaceList (list of additional common search spaces)
@@ -665,11 +665,11 @@ void config_control_ue(NR_UE_MAC_INST_t *mac){
   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->controlResourceSetId == mac->coreset[dl_bwp_id][coreset_id - 1]->controlResourceSetId, "ss->controlResourceSetId is unknown\n");
+    AssertFatal(*css->controlResourceSetId == mac->coreset[dl_bwp_id-1][coreset_id - 1]->controlResourceSetId, "ss->controlResourceSetId is unknown\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");
-    mac->SSpace[dl_bwp_id][coreset_id -1][ss_id] = css;
+    mac->SSpace[dl_bwp_id-1][coreset_id -1][ss_id] = css;
     ss_id++;
   }
 
diff --git a/openair2/LAYER2/NR_MAC_UE/mac_defs.h b/openair2/LAYER2/NR_MAC_UE/mac_defs.h
index 3347ddf19cb87dd6ed613dde408f55e52bbe5a96..6bab72a5a9840831504fecc84ff728cb7e52f9a5 100755
--- a/openair2/LAYER2/NR_MAC_UE/mac_defs.h
+++ b/openair2/LAYER2/NR_MAC_UE/mac_defs.h
@@ -74,7 +74,7 @@
 // ==========
 
 #define NB_NR_UE_MAC_INST 1
-#define MAX_NUM_BWP       5
+#define MAX_NUM_BWP       4
 #define NUM_SLOT_FRAME    10
 
 /*!\brief value for indicating BSR Timer is not running */
diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
index edc22c69721105cc327e60c36aac9902a4a2222d..af500bc31b68e2785237d76c333e97b0754eeb62 100644
--- a/openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
+++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
@@ -84,14 +84,14 @@ void config_dci_pdu(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_dci_dl_pdu_rel15_t
     initialDownlinkBWP =  scc!=NULL ? scc->downlinkConfigCommon->initialDownlinkBWP : &scc_SIB->downlinkConfigCommon.initialDownlinkBWP;
     initialUplinkBWP = scc!=NULL ? scc->uplinkConfigCommon->initialUplinkBWP : &scc_SIB->uplinkConfigCommon->initialUplinkBWP;
 
-    bwp_Common = dl_bwp_id>0 ? mac->DLbwp[dl_bwp_id]->bwp_Common : NULL;
+    bwp_Common = dl_bwp_id>0 ? mac->DLbwp[dl_bwp_id-1]->bwp_Common : NULL;
   }
 
   NR_SearchSpace_t *ss;
   NR_ControlResourceSet_t *coreset;
   if(ss_id>=0) {
-    ss = mac->SSpace[dl_bwp_id][coreset_id - 1][ss_id];
-    coreset = mac->coreset[dl_bwp_id][coreset_id - 1];
+    ss = mac->SSpace[dl_bwp_id-1][coreset_id - 1][ss_id];
+    coreset = mac->coreset[dl_bwp_id-1][coreset_id - 1];
     rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG;
   } else {
     ss = mac->search_space_zero;
@@ -244,19 +244,19 @@ void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl
   RA_config_t *ra = &mac->ra;
   int ss_id;
 
-  NR_BWP_Id_t bwp_id = (mac->cg) ? mac->DL_BWP_Id : 0;
+  NR_BWP_Id_t bwp_id = (mac->cg) ? ((mac->DL_BWP_Id == 0 ) ? 1: mac->DL_BWP_Id ): 0;
   uint8_t coreset_id = (mac->cg) ? 1 : 0;
   //NR_ServingCellConfig_t *scd = mac->scg->spCellConfig->spCellConfigDedicated;
-  NR_BWP_Downlink_t *bwp = (mac->cg) ? mac->DLbwp[bwp_id] : NULL;
+  NR_BWP_Downlink_t *bwp = (mac->cg) ? mac->DLbwp[bwp_id-1] : NULL;
 
   LOG_D(MAC, "[DCI_CONFIG] ra_rnti %p (%x) crnti %p (%x) t_crnti %p (%x)\n", &ra->ra_rnti, ra->ra_rnti, &mac->crnti, mac->crnti, &ra->t_crnti, ra->t_crnti);
 
   if (mac->cg) { // do this only after we have a Master or Secondary Cell group
     // loop over all available SS for BWP ID 1, CORESET ID 1
     if (bwp) {
-      for (ss_id = 0; ss_id < FAPI_NR_MAX_SS_PER_CORESET && mac->SSpace[bwp_id][coreset_id - 1][ss_id] != NULL; ss_id++){
+      for (ss_id = 0; ss_id < FAPI_NR_MAX_SS_PER_CORESET && mac->SSpace[bwp_id-1][coreset_id - 1][ss_id] != NULL; ss_id++){
 	LOG_D(MAC, "[DCI_CONFIG] ss_id %d\n",ss_id);
-	NR_SearchSpace_t *ss = mac->SSpace[bwp_id][coreset_id - 1][ss_id];
+	NR_SearchSpace_t *ss = mac->SSpace[bwp_id-1][coreset_id - 1][ss_id];
 	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_BWP_DownlinkCommon_t *bwp_Common = bwp->bwp_Common;
 	NR_SetupRelease_PDCCH_ConfigCommon_t *pdcch_ConfigCommon = bwp_Common->pdcch_ConfigCommon;
diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
index f490a819cb1d77bfb2feb5ef3bb390e7fd470ccb..7bc02b90a8a35ce443276031679aea11afb087fd 100644
--- a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
@@ -280,8 +280,8 @@ int8_t nr_ue_process_dci_time_dom_resource_assignment(NR_UE_MAC_INST_t *mac,
   uint8_t sliv_S=0;
   uint8_t sliv_L=0;
   uint8_t mu_pusch = 1;
-  NR_BWP_Id_t dl_bwp_id = mac->DL_BWP_Id; 
-  NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id;
+  NR_BWP_Id_t dl_bwp_id = (mac->DL_BWP_Id == 0)?  1 : mac->DL_BWP_Id ; 
+  NR_BWP_Id_t ul_bwp_id = (mac->UL_BWP_Id == 0)?  1 : mac->UL_BWP_Id ;
 
   // definition table j Table 6.1.2.1.1-4
   uint8_t j = (mu_pusch==3)?3:(mu_pusch==2)?2:1;
@@ -327,13 +327,13 @@ int8_t nr_ue_process_dci_time_dom_resource_assignment(NR_UE_MAC_INST_t *mac,
    */
   if(dlsch_config_pdu != NULL){
     NR_PDSCH_TimeDomainResourceAllocationList_t *pdsch_TimeDomainAllocationList = NULL;
-    if (mac->DLbwp[dl_bwp_id] &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
-      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
-    else if (mac->DLbwp[dl_bwp_id] && mac->DLbwp[dl_bwp_id]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
-      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
+    if (mac->DLbwp[dl_bwp_id-1] &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
+      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
+    else if (mac->DLbwp[dl_bwp_id-1] && mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
+      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
     else if (mac->scc_SIB && mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup)
       pdsch_TimeDomainAllocationList = mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
 
@@ -386,19 +386,19 @@ int8_t nr_ue_process_dci_time_dom_resource_assignment(NR_UE_MAC_INST_t *mac,
 	 */
   if(pusch_config_pdu != NULL){
     NR_PUSCH_TimeDomainResourceAllocationList_t *pusch_TimeDomainAllocationList = NULL;
-    if (mac->ULbwp[ul_bwp_id] &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList) {
-      pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList->choice.setup;
+    if (mac->ULbwp[ul_bwp_id-1] &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList) {
+      pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup->pusch_TimeDomainAllocationList->choice.setup;
     }
-    else if (mac->ULbwp[ul_bwp_id] &&
-      mac->ULbwp[ul_bwp_id]->bwp_Common &&
-      mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon &&
-      mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup &&
-      mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
-      pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
+    else if (mac->ULbwp[ul_bwp_id-1] &&
+      mac->ULbwp[ul_bwp_id-1]->bwp_Common &&
+      mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon &&
+      mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup &&
+      mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
+      pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
     }
     else pusch_TimeDomainAllocationList = mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
 
@@ -459,11 +459,12 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
   RA_config_t *ra = &mac->ra;
   fapi_nr_dl_config_request_t *dl_config = &mac->dl_config_request;
   uint8_t is_Msg3 = 0;
-  NR_BWP_Id_t dl_bwp_id = mac->DL_BWP_Id; 
-  NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id;
+  NR_BWP_Id_t dl_bwp_id = (mac->DL_BWP_Id == 0)?  1 : mac->DL_BWP_Id ; 
+  NR_BWP_Id_t ul_bwp_id = (mac->UL_BWP_Id == 0)?  1 : mac->UL_BWP_Id ;
 
   uint16_t n_RB_DLBWP;
-  if (mac->DLbwp[dl_bwp_id]) n_RB_DLBWP = NRRIV2BW(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+  
+  if (mac->DLbwp[dl_bwp_id-1]) n_RB_DLBWP = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
   else if (mac->scc_SIB) n_RB_DLBWP =  NRRIV2BW(mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.genericParameters.locationAndBandwidth,MAX_BWP_SIZE);
   else n_RB_DLBWP = mac->type0_PDCCH_CSS_config.num_rbs;
 
@@ -629,7 +630,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
 
     dl_config->dl_config_list[dl_config->number_pdus].dlsch_config_pdu.rnti = rnti;
     fapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch_config_pdu_1_0 = &dl_config->dl_config_list[dl_config->number_pdus].dlsch_config_pdu.dlsch_config_rel15;
-    NR_PDSCH_Config_t *pdsch_config= (mac->DLbwp[dl_bwp_id]) ? mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup : NULL;
+    NR_PDSCH_Config_t *pdsch_config = (mac->DLbwp[dl_bwp_id-1]) ? mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup : NULL;
     uint16_t BWPSize = n_RB_DLBWP;
 
     if(rnti == SI_RNTI) {
@@ -655,15 +656,15 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
           dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
         }
         if (!get_softmodem_params()->sa) { // NSA mode is not using the Initial BWP
-          dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-          pdsch_config = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup;
+          dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+          pdsch_config = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup;
           BWPSize = dlsch_config_pdu_1_0->BWPSize;
         }
-      } else if (mac->DLbwp[dl_bwp_id]) {
-        dlsch_config_pdu_1_0->BWPSize = NRRIV2BW(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-        dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-        dlsch_config_pdu_1_0->SubcarrierSpacing = mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.subcarrierSpacing;
-        pdsch_config = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup;
+      } else if (mac->DLbwp[dl_bwp_id-1]) {
+        dlsch_config_pdu_1_0->BWPSize = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+        dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+        dlsch_config_pdu_1_0->SubcarrierSpacing = mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.subcarrierSpacing;
+        pdsch_config = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup;
       } else if (mac->scc_SIB) {
         dlsch_config_pdu_1_0->BWPSize = NRRIV2BW(mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
         dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
@@ -685,13 +686,13 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     }
 
     NR_PDSCH_TimeDomainResourceAllocationList_t *pdsch_TimeDomainAllocationList = NULL;
-    if (mac->DLbwp[dl_bwp_id] &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
-      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
-    else if (mac->DLbwp[dl_bwp_id] && mac->DLbwp[dl_bwp_id]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
-      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
+    if (mac->DLbwp[dl_bwp_id-1] &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
+      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
+    else if (mac->DLbwp[dl_bwp_id-1] && mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
+      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
     else if (mac->scc_SIB && mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup)
       pdsch_TimeDomainAllocationList = mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
 
@@ -703,7 +704,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
                                                          dlsch_config_pdu_1_0->number_symbols,
                                                          dlsch_config_pdu_1_0->start_symbol,
                                                          mappingtype);
-    dlsch_config_pdu_1_0->dmrsConfigType = (mac->DLbwp[dl_bwp_id] != NULL) ? (mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1) : 0;
+    dlsch_config_pdu_1_0->dmrsConfigType = (mac->DLbwp[dl_bwp_id-1] != NULL) ? (mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1) : 0;
     /* number of DM-RS CDM groups without data according to subclause 5.1.6.2 of 3GPP TS 38.214 version 15.9.0 Release 15 */
     if (dlsch_config_pdu_1_0->number_symbols == 2)
       dlsch_config_pdu_1_0->n_dmrs_cdm_groups = 1;
@@ -752,14 +753,14 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     dlsch_config_pdu_1_0->pucch_resource_id = dci->pucch_resource_indicator;
     // Sanity check for pucch_resource_indicator value received to check for false DCI.
     valid = 0;
-    if (mac->ULbwp[ul_bwp_id] &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup&&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList) {
-      pucch_res_set_cnt = mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.count;
+    if (mac->ULbwp[ul_bwp_id-1] &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup&&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList) {
+      pucch_res_set_cnt = mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.count;
       for (int id = 0; id < pucch_res_set_cnt; id++) {
-	      if (dlsch_config_pdu_1_0->pucch_resource_id < mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[id]->resourceList.list.count) {
+	      if (dlsch_config_pdu_1_0->pucch_resource_id < mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[id]->resourceList.list.count) {
 	        valid = 1;
 	        break;
 	      }
@@ -855,16 +856,16 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
 
     config_bwp_ue(mac, &dci->bwp_indicator.val, &dci_format);
     
-    NR_PDSCH_Config_t *pdsch_config=mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup;
+    NR_PDSCH_Config_t *pdsch_config=mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup;
 
     dl_config->dl_config_list[dl_config->number_pdus].pdu_type = FAPI_NR_DL_CONFIG_TYPE_DLSCH;
     dl_config->dl_config_list[dl_config->number_pdus].dlsch_config_pdu.rnti = rnti;
 
     fapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch_config_pdu_1_1 = &dl_config->dl_config_list[dl_config->number_pdus].dlsch_config_pdu.dlsch_config_rel15;
 
-    dlsch_config_pdu_1_1->BWPSize = NRRIV2BW(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-    dlsch_config_pdu_1_1->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-    dlsch_config_pdu_1_1->SubcarrierSpacing = mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.subcarrierSpacing;
+    dlsch_config_pdu_1_1->BWPSize = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+    dlsch_config_pdu_1_1->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+    dlsch_config_pdu_1_1->SubcarrierSpacing = mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.subcarrierSpacing;
 
     /* IDENTIFIER_DCI_FORMATS */
     /* CARRIER_IND */
@@ -882,13 +883,13 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     }
 
     NR_PDSCH_TimeDomainResourceAllocationList_t *pdsch_TimeDomainAllocationList = NULL;
-    if (mac->DLbwp[dl_bwp_id] &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config &&
-        mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
-      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
-    else if (mac->DLbwp[dl_bwp_id] && mac->DLbwp[dl_bwp_id]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
-      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
+    if (mac->DLbwp[dl_bwp_id-1] &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config &&
+        mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
+      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
+    else if (mac->DLbwp[dl_bwp_id-1] && mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
+      pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
     else if (mac->scc_SIB && mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup)
       pdsch_TimeDomainAllocationList = mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
 
@@ -900,7 +901,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
 							 dlsch_config_pdu_1_1->number_symbols,
                dlsch_config_pdu_1_1->start_symbol,
                mappingtype);
-    dlsch_config_pdu_1_1->dmrsConfigType = mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? NFAPI_NR_DMRS_TYPE1 : NFAPI_NR_DMRS_TYPE2;
+    dlsch_config_pdu_1_1->dmrsConfigType = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? NFAPI_NR_DMRS_TYPE1 : NFAPI_NR_DMRS_TYPE2;
     /* TODO: fix number of DM-RS CDM groups without data according to subclause 5.1.6.2 of 3GPP TS 38.214,
              using tables 7.3.1.2.2-1, 7.3.1.2.2-2, 7.3.1.2.2-3, 7.3.1.2.2-4 of 3GPP TS 38.212 */
     dlsch_config_pdu_1_1->n_dmrs_cdm_groups = 1;
@@ -949,9 +950,9 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     dlsch_config_pdu_1_1->pucch_resource_id = dci->pucch_resource_indicator;
     // Sanity check for pucch_resource_indicator value received to check for false DCI.
     valid = 0;
-    pucch_res_set_cnt = mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.count;
+    pucch_res_set_cnt = mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.count;
     for (int id = 0; id < pucch_res_set_cnt; id++) {
-      if (dlsch_config_pdu_1_1->pucch_resource_id < mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[id]->resourceList.list.count) {
+      if (dlsch_config_pdu_1_1->pucch_resource_id < mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->resourceSetToAddModList->list.array[id]->resourceList.list.count) {
         valid = 1;
         break;
       }
@@ -965,7 +966,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     // according to TS 38.213 Table 9.2.3-1
     
     dlsch_config_pdu_1_1->pdsch_to_harq_feedback_time_ind =
-      mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pucch_Config->choice.setup->dl_DataToUL_ACK->list.array[dci->pdsch_to_harq_feedback_timing_indicator.val][0];
+      mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pucch_Config->choice.setup->dl_DataToUL_ACK->list.array[dci->pdsch_to_harq_feedback_timing_indicator.val][0];
 
     /* ANTENNA_PORTS */
     uint8_t n_codewords = 1; // FIXME!!!
@@ -1077,8 +1078,8 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     /* TODO same calculation for MCS table as done in UL */
     dlsch_config_pdu_1_1->mcs_table = (pdsch_config->mcs_Table) ? (*pdsch_config->mcs_Table + 1) : 0;
     /*PTRS configuration */
-    if(mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS != NULL) {
-      valid_ptrs_setup = set_dl_ptrs_values(mac->DLbwp[dl_bwp_id]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup,
+    if(mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS != NULL) {
+      valid_ptrs_setup = set_dl_ptrs_values(mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS->choice.setup,
                                             dlsch_config_pdu_1_1->number_rbs, dlsch_config_pdu_1_1->mcs, dlsch_config_pdu_1_1->mcs_table,
                                             &dlsch_config_pdu_1_1->PTRSFreqDensity,&dlsch_config_pdu_1_1->PTRSTimeDensity,
                                             &dlsch_config_pdu_1_1->PTRSPortIndex,&dlsch_config_pdu_1_1->nEpreRatioOfPDSCHToPTRS,
@@ -1169,14 +1170,14 @@ void nr_ue_send_sdu(nr_downlink_indication_t *dl_info, NR_UL_TIME_ALIGNMENT_t *u
 int get_n_rb(NR_UE_MAC_INST_t *mac, int rnti_type){
 
   int N_RB = 0, start_RB;
-  NR_BWP_Id_t dl_bwp_id = mac->DL_BWP_Id;
+  NR_BWP_Id_t dl_bwp_id = (mac->DL_BWP_Id == 0)?  1 : mac->DL_BWP_Id ; 
   switch(rnti_type) {
     case NR_RNTI_RA:
     case NR_RNTI_TC:
     case NR_RNTI_P: {
-      if (mac->DLbwp[dl_bwp_id]->bwp_Common->pdcch_ConfigCommon->choice.setup->controlResourceSetZero) {
+      if (mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdcch_ConfigCommon->choice.setup->controlResourceSetZero) {
         uint8_t coreset_id = 0; // assuming controlResourceSetId is 0 for controlResourceSetZero
-        NR_ControlResourceSet_t *coreset = mac->coreset[dl_bwp_id][coreset_id];
+        NR_ControlResourceSet_t *coreset = mac->coreset[dl_bwp_id-1][coreset_id];
         get_coreset_rballoc(coreset->frequencyDomainResources.buf,&N_RB,&start_RB);
       } else {
         N_RB = NRRIV2BW(mac->scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
@@ -1187,7 +1188,7 @@ int get_n_rb(NR_UE_MAC_INST_t *mac, int rnti_type){
       N_RB = mac->type0_PDCCH_CSS_config.num_rbs;
       break;
     case NR_RNTI_C:
-      N_RB = NRRIV2BW(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+      N_RB = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
       break;
   }
   return N_RB;
@@ -1206,14 +1207,15 @@ uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
   int fsize = 0;
 
   int rnti_type = get_rnti_type(mac, rnti);
-  NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id; 
-  NR_BWP_Id_t dl_bwp_id = mac->DL_BWP_Id; 
+  NR_BWP_Id_t dl_bwp_id = (mac->DL_BWP_Id == 0)?  1 : mac->DL_BWP_Id ; 
+  NR_BWP_Id_t ul_bwp_id = (mac->UL_BWP_Id == 0)?  1 : mac->UL_BWP_Id ;
+
 
   int N_RB_UL = 0;
   if(mac->scc_SIB) {
     N_RB_UL = NRRIV2BW(mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-  } else if(mac->ULbwp[ul_bwp_id]) {
-    N_RB_UL = NRRIV2BW(mac->ULbwp[ul_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+  } else if(mac->ULbwp[ul_bwp_id-1]) {
+    N_RB_UL = NRRIV2BW(mac->ULbwp[ul_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
   } else if(mac->scc) {
     N_RB_UL = NRRIV2BW(mac->scc->uplinkConfigCommon->initialUplinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
   }
@@ -1278,7 +1280,7 @@ uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
 #endif
 
       // check BWP id
-      if (mac->DLbwp[dl_bwp_id]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+      if (mac->DLbwp[dl_bwp_id-1]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
       else         N_RB=NRRIV2BW(mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
 
       // Freq domain assignment (275rb >> fsize = 16)
@@ -1461,7 +1463,7 @@ uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
     case NR_RNTI_TC:
 
       // check BWP id
-      if (mac->DLbwp[dl_bwp_id]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+      if (mac->DLbwp[dl_bwp_id-1]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
       else         N_RB=NRRIV2BW(mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
 
       // indicating a DL DCI format - 1 bit
@@ -1536,7 +1538,7 @@ uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
     break;
   
   case NR_UL_DCI_FORMAT_0_0:
-    if (mac->ULbwp[ul_bwp_id]) N_RB_UL=NRRIV2BW(mac->ULbwp[ul_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+    if (mac->ULbwp[ul_bwp_id-1]) N_RB_UL=NRRIV2BW(mac->ULbwp[ul_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
     else         N_RB_UL=NRRIV2BW(mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
 
     switch(rnti_type)
diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
index bf192a5c6b31da9a63a4aa02ffb94832f4443cb9..0d092c84c41b024ad6442ad564d4332ec4141e37 100644
--- a/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
+++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
@@ -97,17 +97,17 @@ long get_k2(NR_UE_MAC_INST_t *mac, uint8_t time_domain_ind) {
 
   NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id;
   // Get K2 from RRC configuration
-  NR_PUSCH_Config_t *pusch_config=mac->ULbwp[ul_bwp_id] ? mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup : NULL;
+  NR_PUSCH_Config_t *pusch_config=mac->ULbwp[ul_bwp_id-1] ? mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup : NULL;
   NR_PUSCH_TimeDomainResourceAllocationList_t *pusch_TimeDomainAllocationList = NULL;
   if (pusch_config && pusch_config->pusch_TimeDomainAllocationList) {
     pusch_TimeDomainAllocationList = pusch_config->pusch_TimeDomainAllocationList->choice.setup;
   }
-  else if (mac->ULbwp[ul_bwp_id] &&
-	   mac->ULbwp[ul_bwp_id]->bwp_Common&&
-	   mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon&&
-	   mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup &&
-	   mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
-    pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
+  else if (mac->ULbwp[ul_bwp_id-1] &&
+	   mac->ULbwp[ul_bwp_id-1]->bwp_Common&&
+	   mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon&&
+	   mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup &&
+	   mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
+    pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
   }
   else if (mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList)
     pusch_TimeDomainAllocationList=mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
@@ -148,8 +148,8 @@ fapi_nr_ul_config_request_t *get_ul_config_request(NR_UE_MAC_INST_t *mac, int sl
   // Calculate the index of the UL slot in mac->ul_config_request list. This is
   // based on the TDD pattern (slot configuration period) and number of UL+mixed
   // slots in the period. TS 38.213 Sec 11.1
-  int mu = mac->ULbwp[ul_bwp_id] ?
-    mac->ULbwp[ul_bwp_id]->bwp_Common->genericParameters.subcarrierSpacing :
+  int mu = mac->ULbwp[ul_bwp_id-1] ?
+    mac->ULbwp[ul_bwp_id-1]->bwp_Common->genericParameters.subcarrierSpacing :
     mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.genericParameters.subcarrierSpacing;
   NR_TDD_UL_DL_Pattern_t *tdd_pattern = &tdd_config->pattern1;
   const int num_slots_per_tdd = nr_slots_per_frame[mu] >> (7 - tdd_pattern->dl_UL_TransmissionPeriodicity);
@@ -168,7 +168,7 @@ void ul_layers_config(NR_UE_MAC_INST_t * mac, nfapi_nr_ue_pusch_pdu_t *pusch_con
 
   NR_ServingCellConfigCommon_t *scc = mac->scc;
   NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id;
-  NR_PUSCH_Config_t *pusch_Config = mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup;
+  NR_PUSCH_Config_t *pusch_Config = mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup;
 
   long	transformPrecoder;
   if (pusch_Config->transformPrecoder)
@@ -308,7 +308,7 @@ void ul_ports_config(NR_UE_MAC_INST_t * mac, nfapi_nr_ue_pusch_pdu_t *pusch_conf
   uint8_t rank = 0; // We need to initialize rank FIXME!!!
   NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id;
   NR_ServingCellConfigCommon_t *scc = mac->scc;
-  NR_PUSCH_Config_t *pusch_Config = mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup;
+  NR_PUSCH_Config_t *pusch_Config = mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup;
 
   long	transformPrecoder;
   if (pusch_Config->transformPrecoder)
@@ -530,7 +530,7 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
   if (rar_grant) {
 
     // Note: for Msg3 or MsgA PUSCH transmission the N_PRB_oh is always set to 0
-    NR_BWP_Uplink_t *ubwp = mac->ULbwp[ul_bwp_id];
+    NR_BWP_Uplink_t *ubwp = mac->ULbwp[ul_bwp_id-1];
     NR_BWP_UplinkDedicated_t *ibwp;
     int scs,abwp_start,abwp_size,startSymbolAndLength,mappingtype;
     NR_PUSCH_Config_t *pusch_Config=NULL;
@@ -635,9 +635,9 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
     int target_ss;
     bool valid_ptrs_setup = 0;
     uint16_t n_RB_ULBWP;
-    if (mac->ULbwp[ul_bwp_id] && mac->ULbwp[ul_bwp_id]->bwp_Common) {
-      n_RB_ULBWP = NRRIV2BW(mac->ULbwp[ul_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
-      pusch_config_pdu->bwp_start = NRRIV2PRBOFFSET(mac->ULbwp[ul_bwp_id]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+    if (mac->ULbwp[ul_bwp_id-1] && mac->ULbwp[ul_bwp_id-1]->bwp_Common) {
+      n_RB_ULBWP = NRRIV2BW(mac->ULbwp[ul_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+      pusch_config_pdu->bwp_start = NRRIV2PRBOFFSET(mac->ULbwp[ul_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
     }
     else {
       pusch_config_pdu->bwp_start = NRRIV2PRBOFFSET(mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
@@ -646,7 +646,7 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
 
     pusch_config_pdu->bwp_size = n_RB_ULBWP;
 
-    NR_PUSCH_Config_t *pusch_Config = mac->ULbwp[ul_bwp_id] ? mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup : NULL;
+    NR_PUSCH_Config_t *pusch_Config = mac->ULbwp[ul_bwp_id-1] ? mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup : NULL;
 
     // Basic sanity check for MCS value to check for a false or erroneous DCI
     if (dci->mcs > 28) {
@@ -685,12 +685,12 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
     if (pusch_Config && pusch_Config->pusch_TimeDomainAllocationList) {
       pusch_TimeDomainAllocationList = pusch_Config->pusch_TimeDomainAllocationList->choice.setup;
     }
-    else if (mac->ULbwp[ul_bwp_id] &&
-             mac->ULbwp[ul_bwp_id]->bwp_Common&&
-             mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon&&
-             mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup &&
-             mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
-      pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
+    else if (mac->ULbwp[ul_bwp_id-1] &&
+             mac->ULbwp[ul_bwp_id-1]->bwp_Common&&
+             mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon&&
+             mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup &&
+             mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList) {
+      pusch_TimeDomainAllocationList = mac->ULbwp[ul_bwp_id-1]->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
     }
     else if (mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList)
       pusch_TimeDomainAllocationList=mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
@@ -785,9 +785,9 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
 
     /* DMRS */
     l_prime_mask = get_l_prime(pusch_config_pdu->nr_of_symbols, mappingtype, add_pos, dmrslength, pusch_config_pdu->start_symbol_index, mac->scc ? mac->scc->dmrs_TypeA_Position : mac->mib->dmrs_TypeA_Position);
-    if ((mac->ULbwp[ul_bwp_id] && pusch_config_pdu->transform_precoding == transform_precoder_disabled))
+    if ((mac->ULbwp[ul_bwp_id-1] && pusch_config_pdu->transform_precoding == transform_precoder_disabled))
       pusch_config_pdu->num_dmrs_cdm_grps_no_data = 1;
-    else if (*dci_format == NR_UL_DCI_FORMAT_0_0 || (mac->ULbwp[ul_bwp_id] && pusch_config_pdu->transform_precoding == transform_precoder_enabled))
+    else if (*dci_format == NR_UL_DCI_FORMAT_0_0 || (mac->ULbwp[ul_bwp_id-1] && pusch_config_pdu->transform_precoding == transform_precoder_enabled))
       pusch_config_pdu->num_dmrs_cdm_grps_no_data = 2;
 
     // Num PRB Overhead from PUSCH-ServingCellConfig
@@ -802,16 +802,16 @@ int nr_config_pusch_pdu(NR_UE_MAC_INST_t *mac,
     else N_PRB_oh = 0;
 
     /* PTRS */
-    if (mac->ULbwp[ul_bwp_id] &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB &&
-        mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup->phaseTrackingRS) {
+    if (mac->ULbwp[ul_bwp_id-1] &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB &&
+        mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup->phaseTrackingRS) {
       if (pusch_config_pdu->transform_precoding == transform_precoder_disabled) {
         nfapi_nr_ue_ptrs_ports_t ptrs_ports_list;
         pusch_config_pdu->pusch_ptrs.ptrs_ports_list = &ptrs_ports_list;
-        valid_ptrs_setup = set_ul_ptrs_values(mac->ULbwp[ul_bwp_id]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup->phaseTrackingRS->choice.setup,
+        valid_ptrs_setup = set_ul_ptrs_values(mac->ULbwp[ul_bwp_id-1]->bwp_Dedicated->pusch_Config->choice.setup->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup->phaseTrackingRS->choice.setup,
                                               pusch_config_pdu->rb_size, pusch_config_pdu->mcs_index, pusch_config_pdu->mcs_table,
                                               &pusch_config_pdu->pusch_ptrs.ptrs_freq_density,&pusch_config_pdu->pusch_ptrs.ptrs_time_density,
                                               &pusch_config_pdu->pusch_ptrs.ptrs_ports_list->ptrs_re_offset,&pusch_config_pdu->pusch_ptrs.num_ptrs_ports,
@@ -1122,7 +1122,7 @@ int nr_ue_pusch_scheduler(NR_UE_MAC_INST_t *mac,
 
   int delta = 0;
   NR_BWP_Id_t ul_bwp_id = mac->UL_BWP_Id;
-  NR_BWP_Uplink_t *ubwp = mac->ULbwp[ul_bwp_id];
+  NR_BWP_Uplink_t *ubwp = mac->ULbwp[ul_bwp_id-1];
 
   // Get the numerology to calculate the Tx frame and slot
   int mu = ubwp ?
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
index a0df119c1c7241ffc1f71493a937548411acae89..078cabc5cebc0d2e37ca6bf7cb31f659566a5924 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
@@ -380,7 +380,7 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
   }
 
   memset(RC.nrmac[module_idP]->cce_list[0][0],0,MAX_NUM_CCE*sizeof(int)); // coreset0
-  for(int i_bwp = 1; i_bwp < MAX_NUM_BWP; i_bwp++)
+  for(int i_bwp = 0; i_bwp < MAX_NUM_BWP; i_bwp++)
     memset(RC.nrmac[module_idP]->cce_list[i_bwp][1],0,MAX_NUM_CCE*sizeof(int)); // coresetid i
     
   NR_UE_info_t *UE_info = &RC.nrmac[module_idP]->UE_info;
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
index 8158e5fcca2b3c70b967db2c740a88dc9a3d5a2e..d1680f08985ffd75175f2c73d7233332eb56048c 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
@@ -988,7 +988,7 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
     // important if we have multiple RAs, and the DLSCH has to reuse them, so we need to mark them
     const int bwpid = bwp ? bwp->bwp_Id : 0;
     const int coresetid = coreset->controlResourceSetId;
-    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu_rel15 = nr_mac->pdcch_pdu_idx[CC_id][bwpid][coresetid];
+    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu_rel15 = nr_mac->pdcch_pdu_idx[CC_id][bwpid-1][coresetid];
     if (!pdcch_pdu_rel15) {
       nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdcch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
       memset(dl_tti_pdcch_pdu, 0, sizeof(nfapi_nr_dl_tti_request_pdu_t));
@@ -997,7 +997,7 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
       dl_req->nPDUs += 1;
       pdcch_pdu_rel15 = &dl_tti_pdcch_pdu->pdcch_pdu.pdcch_pdu_rel15;
       nr_configure_pdcch(pdcch_pdu_rel15, ss, coreset, scc, bwp);
-      nr_mac->pdcch_pdu_idx[CC_id][bwpid][coresetid] = pdcch_pdu_rel15;
+      nr_mac->pdcch_pdu_idx[CC_id][bwpid-1][coresetid] = pdcch_pdu_rel15;
     }
 
     nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdsch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
@@ -1335,9 +1335,9 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
 
     // look up the PDCCH PDU for this CC, BWP, and CORESET. If it does not exist, create it. This is especially
     // important if we have multiple RAs, and the DLSCH has to reuse them, so we need to mark them
-    const int bwpid = bwp ? bwp->bwp_Id : 0;
+    const int bwpid = bwp ? bwp->bwp_Id : 1;
     const int coresetid = coreset->controlResourceSetId;
-    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu_rel15 = nr_mac->pdcch_pdu_idx[CC_id][bwpid][coresetid];
+    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu_rel15 = nr_mac->pdcch_pdu_idx[CC_id][bwpid-1][coresetid];
     if (!pdcch_pdu_rel15) {
       nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdcch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
       memset(dl_tti_pdcch_pdu, 0, sizeof(nfapi_nr_dl_tti_request_pdu_t));
@@ -1346,7 +1346,7 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
       dl_req->nPDUs += 1;
       pdcch_pdu_rel15 = &dl_tti_pdcch_pdu->pdcch_pdu.pdcch_pdu_rel15;
       nr_configure_pdcch(pdcch_pdu_rel15, ss, coreset, scc, bwp);
-      nr_mac->pdcch_pdu_idx[CC_id][bwpid][coresetid] = pdcch_pdu_rel15;
+      nr_mac->pdcch_pdu_idx[CC_id][bwpid-1][coresetid] = pdcch_pdu_rel15;
     }
 
     nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdsch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
@@ -1459,7 +1459,7 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
                        NR_DL_DCI_FORMAT_1_0,
                        NR_RNTI_TC,
                        pdsch_pdu_rel15->BWPSize,
-                       bwpid);
+                       (bwpid-1));
 
     // Add padding header and zero rest out if there is space left
     if (mac_pdu_length < harq->tb_size) {
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
index 93d2e959ddf4857935edd61e98b407aa25fc724e..caf1735cb38db5c9d5fbb11342f362eed68318de 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c
@@ -60,8 +60,8 @@ static int loop_dcch_dtch = DL_SCH_LCID_DTCH;
 void calculate_preferred_dl_tda(module_id_t module_id, const NR_BWP_Downlink_t *bwp)
 {
   gNB_MAC_INST *nrmac = RC.nrmac[module_id];
-  const int bwp_id = bwp ? bwp->bwp_Id : 0;
-  if (nrmac->preferred_dl_tda[bwp_id])
+  const int bwp_id = bwp ? bwp->bwp_Id : 1;
+  if (nrmac->preferred_dl_tda[bwp_id-1])
     return;
 
   /* there is a mixed slot only when in TDD */
@@ -120,17 +120,17 @@ void calculate_preferred_dl_tda(module_id_t module_id, const NR_BWP_Downlink_t *
 
   const uint8_t slots_per_frame[5] = {10, 20, 40, 80, 160};
   const int n = slots_per_frame[*scc->ssbSubcarrierSpacing];
-  nrmac->preferred_dl_tda[bwp_id] = malloc(n * sizeof(*nrmac->preferred_dl_tda[bwp_id]));
+  nrmac->preferred_dl_tda[bwp_id-1] = malloc(n * sizeof(*nrmac->preferred_dl_tda[bwp_id-1]));
 
   const int nr_mix_slots = tdd ? tdd->nrofDownlinkSymbols != 0 || tdd->nrofUplinkSymbols != 0 : 0;
   const int nr_slots_period = tdd ? tdd->nrofDownlinkSlots + tdd->nrofUplinkSlots + nr_mix_slots : n;
   for (int i = 0; i < n; ++i) {
-    nrmac->preferred_dl_tda[bwp_id][i] = -1;
+    nrmac->preferred_dl_tda[bwp_id-1][i] = -1;
     if (!tdd || i % nr_slots_period < tdd->nrofDownlinkSlots)
-      nrmac->preferred_dl_tda[bwp_id][i] = 0;
+      nrmac->preferred_dl_tda[bwp_id-1][i] = 0;
     else if (tdd && nr_mix_slots && i % nr_slots_period == tdd->nrofDownlinkSlots)
-      nrmac->preferred_dl_tda[bwp_id][i] = tdaMi;
-    LOG_I(MAC, "slot %d preferred_dl_tda %d\n", i, nrmac->preferred_dl_tda[bwp_id][i]);
+      nrmac->preferred_dl_tda[bwp_id-1][i] = tdaMi;
+    LOG_I(MAC, "slot %d preferred_dl_tda %d\n", i, nrmac->preferred_dl_tda[bwp_id-1][i]);
   }
 }
 
@@ -458,7 +458,7 @@ bool allocate_dl_retransmission(module_id_t module_id,
   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);
 
   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;
+  const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id-1][slot] : 1;
   if (tda == retInfo->time_domain_allocation) {
     /* Check that there are enough resources for retransmission */
     while (rbSize < retInfo->rbSize) {
@@ -531,7 +531,7 @@ bool allocate_dl_retransmission(module_id_t module_id,
           slot);
     int cid = sched_ctrl->coreset->controlResourceSetId;
     UE_info->num_pdcch_cand[UE_id][cid]--;
-    int *cce_list = RC.nrmac[module_id]->cce_list[sched_ctrl->active_bwp->bwp_Id][cid];
+    int *cce_list = RC.nrmac[module_id]->cce_list[sched_ctrl->active_bwp->bwp_Id-1][cid];
     for (int i = 0; i < sched_ctrl->aggregation_level; i++)
       cce_list[sched_ctrl->cce_index + i] = 0;
     return false;
@@ -634,7 +634,7 @@ void pf_dl(module_id_t module_id,
     *p = -1;
 
     NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
-    int bwp_Id = sched_ctrl->active_bwp ? sched_ctrl->active_bwp->bwp_Id : 0;
+    int bwp_Id = sched_ctrl->active_bwp ? sched_ctrl->active_bwp->bwp_Id : 1;
     const uint16_t rnti = UE_info->rnti[UE_id];
     NR_BWP_t *genericParameters = sched_ctrl->active_bwp ?
       &sched_ctrl->active_bwp->bwp_Common->genericParameters:
@@ -666,7 +666,7 @@ void pf_dl(module_id_t module_id,
             slot);
       int cid = sched_ctrl->coreset->controlResourceSetId;
       UE_info->num_pdcch_cand[UE_id][cid]--;
-      int *cce_list = mac->cce_list[bwp_Id][cid];
+      int *cce_list = mac->cce_list[bwp_Id-1][cid];
       for (int i = 0; i < sched_ctrl->aggregation_level; i++)
         cce_list[sched_ctrl->cce_index + i] = 0;
       return;
@@ -679,7 +679,7 @@ void pf_dl(module_id_t module_id,
       max_rbSize++;
 
     /* MCS has been set above */
-    const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id][slot] : 1;
+    const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id-1][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;
@@ -877,9 +877,9 @@ void nr_schedule_ue_spec(module_id_t module_id,
 
     /* look up the PDCCH PDU for this CC, BWP, and CORESET. If it does not
      * exist, create it */
-    const int bwpid = bwp ? bwp->bwp_Id : 0;
+    const int bwpid = bwp ? bwp->bwp_Id : 1;
     const int coresetid = bwp ? sched_ctrl->coreset->controlResourceSetId : gNB_mac->sched_ctrlCommon->coreset->controlResourceSetId;
-    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu = gNB_mac->pdcch_pdu_idx[CC_id][bwpid][coresetid];
+    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu = gNB_mac->pdcch_pdu_idx[CC_id][bwpid-1][coresetid];
     if (!pdcch_pdu) {
       nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdcch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
       memset(dl_tti_pdcch_pdu, 0, sizeof(nfapi_nr_dl_tti_request_pdu_t));
@@ -891,7 +891,7 @@ void nr_schedule_ue_spec(module_id_t module_id,
       NR_SearchSpace_t *ss = bwp ? sched_ctrl->search_space:gNB_mac->sched_ctrlCommon->search_space;
       NR_ControlResourceSet_t *coreset = bwp? sched_ctrl->coreset:gNB_mac->sched_ctrlCommon->coreset;
       nr_configure_pdcch(pdcch_pdu, ss, coreset, scc, bwp);
-      gNB_mac->pdcch_pdu_idx[CC_id][bwpid][coresetid] = pdcch_pdu;
+      gNB_mac->pdcch_pdu_idx[CC_id][bwpid-1][coresetid] = pdcch_pdu;
     }
 
     nfapi_nr_dl_tti_request_pdu_t *dl_tti_pdsch_pdu = &dl_req->dl_tti_pdu_list[dl_req->nPDUs];
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c
index 50a0b241b66080cab7a4b49099dd53eb55499a64..7a824eaec0816b048236f4f7c20bebdcef1e7f74 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c
@@ -354,7 +354,7 @@ void nr_preprocessor_phytest(module_id_t module_id,
           frame,
           slot);
     UE_info->num_pdcch_cand[UE_id][cid]--;
-    int *cce_list = RC.nrmac[module_id]->cce_list[sched_ctrl->active_bwp->bwp_Id][cid];
+    int *cce_list = RC.nrmac[module_id]->cce_list[sched_ctrl->active_bwp->bwp_Id-1][cid];
     for (int i = 0; i < sched_ctrl->aggregation_level; i++)
       cce_list[sched_ctrl->cce_index + i] = 0;
     return;
@@ -369,7 +369,7 @@ void nr_preprocessor_phytest(module_id_t module_id,
   sched_pdsch->pucch_allocation = alloc;
   sched_pdsch->rbStart = rbStart;
   sched_pdsch->rbSize = rbSize;
-  const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id][slot] : 1;
+  const int tda = sched_ctrl->active_bwp ? RC.nrmac[module_id]->preferred_dl_tda[sched_ctrl->active_bwp->bwp_Id-1][slot] : 1;
   const uint8_t num_dmrs_cdm_grps_no_data = 1;
   if (ps->time_domain_allocation != tda || ps->numDmrsCdmGrpsNoData != num_dmrs_cdm_grps_no_data)
     nr_set_pdsch_semi_static(
@@ -422,7 +422,7 @@ bool nr_ul_preprocessor_phytest(module_id_t module_id, frame_t frame, sub_frame_
 
   NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
 
-  const int tda = sched_ctrl->active_ubwp ? RC.nrmac[module_id]->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id][slot] : 1;
+  const int tda = sched_ctrl->active_ubwp ? RC.nrmac[module_id]->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id-1][slot] : 1;
   if (tda < 0)
     return false;
   const struct NR_PUSCH_TimeDomainResourceAllocationList *tdaList =
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
index 832ee27283f5ffa6aeb2cb8423d17f50b4c90e37..0452c658d8581254c1ab096f9536a6f68af83128 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
@@ -188,7 +188,7 @@ int allocate_nr_CCEs(gNB_MAC_INST *nr_mac,
   if(bwp == NULL || bwp->bwp_Id == 0) {
     cce_list = nr_mac->cce_list[0][0];
   } else {
-    cce_list = nr_mac->cce_list[bwp->bwp_Id][coreset_id];
+    cce_list = nr_mac->cce_list[bwp->bwp_Id-1][coreset_id];
   }
 
   int n_rb=0;
diff --git a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
index 17c7bb92eba7a683ea431f627a91c3a984809dd0..597ef741f01d1b3f384d82a2ec37a908606b9d89 100644
--- a/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
+++ b/openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
@@ -67,7 +67,7 @@ void calculate_preferred_ul_tda(module_id_t module_id, const NR_BWP_Uplink_t *ub
 {
   gNB_MAC_INST *nrmac = RC.nrmac[module_id];
   const int bwp_id = ubwp->bwp_Id;
-  if (nrmac->preferred_ul_tda[bwp_id])
+  if (nrmac->preferred_ul_tda[bwp_id-1])
     return;
 
   /* there is a mixed slot only when in TDD */
@@ -153,18 +153,18 @@ void calculate_preferred_ul_tda(module_id_t module_id, const NR_BWP_Uplink_t *ub
 
   const uint8_t slots_per_frame[5] = {10, 20, 40, 80, 160};
   const int n = slots_per_frame[*scc->ssbSubcarrierSpacing];
-  nrmac->preferred_ul_tda[bwp_id] = malloc(n * sizeof(*nrmac->preferred_ul_tda[bwp_id]));
+  nrmac->preferred_ul_tda[bwp_id-1] = malloc(n * sizeof(*nrmac->preferred_ul_tda[bwp_id-1]));
 
   const int nr_mix_slots = tdd ? tdd->nrofDownlinkSymbols != 0 || tdd->nrofUplinkSymbols != 0 : 0;
   const int nr_slots_period = tdd ? tdd->nrofDownlinkSlots + tdd->nrofUplinkSlots + nr_mix_slots : n;
   for (int slot = 0; slot < n; ++slot) {
     const int sched_slot = (slot + k2) % n;
-    nrmac->preferred_ul_tda[bwp_id][slot] = -1;
+    nrmac->preferred_ul_tda[bwp_id-1][slot] = -1;
     if (!tdd || sched_slot % nr_slots_period >= tdd->nrofDownlinkSlots + nr_mix_slots)
-      nrmac->preferred_ul_tda[bwp_id][slot] = 0;
+      nrmac->preferred_ul_tda[bwp_id-1][slot] = 0;
     else if (tdd && nr_mix_slots && sched_slot % nr_slots_period == tdd->nrofDownlinkSlots)
-      nrmac->preferred_ul_tda[bwp_id][slot] = tdaMi;
-    LOG_I(MAC, "DL slot %d UL slot %d preferred_ul_tda %d\n", slot, sched_slot, nrmac->preferred_ul_tda[bwp_id][slot]);
+      nrmac->preferred_ul_tda[bwp_id-1][slot] = tdaMi;
+    LOG_I(MAC, "DL slot %d UL slot %d preferred_ul_tda %d\n", slot, sched_slot, nrmac->preferred_ul_tda[bwp_id-1][slot]);
   }
 
   if (k2 < tdd->nrofUplinkSlots)
@@ -853,7 +853,7 @@ bool allocate_ul_retransmission(module_id_t module_id,
   const uint16_t bwpSize = NRRIV2BW(genericParameters->locationAndBandwidth, MAX_BWP_SIZE);
 
   const uint8_t num_dmrs_cdm_grps_no_data = sched_ctrl->active_bwp ? 1 : 2;
-  const int tda = sched_ctrl->active_ubwp ? RC.nrmac[module_id]->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id][slot] : 0;
+  const int tda = sched_ctrl->active_ubwp ? RC.nrmac[module_id]->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id-1][slot] : 0;
   LOG_D(NR_MAC,"retInfo->time_domain_allocation = %d, tda = %d\n", retInfo->time_domain_allocation, tda);
   if (tda == retInfo->time_domain_allocation) {
     /* Check the resource is enough for retransmission */
@@ -1046,7 +1046,7 @@ void pf_ul(module_id_t module_id,
       const uint8_t num_dmrs_cdm_grps_no_data = sched_ctrl->active_ubwp ? 1 : 2;
       const long f = sched_ctrl->search_space->searchSpaceType->choice.ue_Specific->dci_Formats;
       const int dci_format = sched_ctrl->active_ubwp ? (f ? NR_UL_DCI_FORMAT_0_1 : NR_UL_DCI_FORMAT_0_0) : NR_UL_DCI_FORMAT_0_0;
-      const int tda = sched_ctrl->active_ubwp ? nrmac->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id][slot] : 0;
+      const int tda = sched_ctrl->active_ubwp ? nrmac->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id-1][slot] : 0;
       if (ps->time_domain_allocation != tda
           || ps->dci_format != dci_format
           || ps->num_dmrs_cdm_grps_no_data != num_dmrs_cdm_grps_no_data)
@@ -1142,7 +1142,7 @@ void pf_ul(module_id_t module_id,
     const uint8_t num_dmrs_cdm_grps_no_data = sched_ctrl->active_ubwp ? 1 : 2;
     const long f = sched_ctrl->search_space->searchSpaceType->choice.ue_Specific->dci_Formats;
     const int dci_format = sched_ctrl->active_ubwp ? (f ? NR_UL_DCI_FORMAT_0_1 : NR_UL_DCI_FORMAT_0_0) : NR_UL_DCI_FORMAT_0_0;
-    const int tda = sched_ctrl->active_ubwp ? nrmac->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id][slot] : 0;
+    const int tda = sched_ctrl->active_ubwp ? nrmac->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id-1][slot] : 0;
     if (ps->time_domain_allocation != tda
         || ps->dci_format != dci_format
         || ps->num_dmrs_cdm_grps_no_data != num_dmrs_cdm_grps_no_data)
@@ -1192,7 +1192,7 @@ bool nr_fr1_ulsch_preprocessor(module_id_t module_id, frame_t frame, sub_frame_t
    * schedule now (slot + k2 is not UL slot) */
   int UE_id = UE_info->list.head;
   NR_UE_sched_ctrl_t *sched_ctrl = &UE_info->UE_sched_ctrl[UE_id];
-  const int tda = sched_ctrl->active_ubwp ? nr_mac->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id][slot] : 0;
+  const int tda = sched_ctrl->active_ubwp ? nr_mac->preferred_ul_tda[sched_ctrl->active_ubwp->bwp_Id-1][slot] : 0;
   if (tda < 0)
     return false;
   int K2 = get_K2(scc, sched_ctrl->active_ubwp, tda, mu);
@@ -1543,11 +1543,11 @@ void nr_schedule_ulsch(module_id_t module_id, frame_t frame, sub_frame_t slot)
 
     /* look up the PDCCH PDU for this BWP and CORESET. If it does not exist,
      * create it */
-    const int bwpid = sched_ctrl->active_bwp ? sched_ctrl->active_bwp->bwp_Id : 0;
+    const int bwpid = sched_ctrl->active_bwp ? sched_ctrl->active_bwp->bwp_Id : 1;
     NR_SearchSpace_t *ss = sched_ctrl->active_bwp ? sched_ctrl->search_space: RC.nrmac[module_id]->sched_ctrlCommon->search_space;
     NR_ControlResourceSet_t *coreset = sched_ctrl->active_bwp? sched_ctrl->coreset: RC.nrmac[module_id]->sched_ctrlCommon->coreset;
     const int coresetid = coreset->controlResourceSetId;
-    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu = pdcch_pdu_bwp_coreset[bwpid][coresetid];
+    nfapi_nr_dl_tti_pdcch_pdu_rel15_t *pdcch_pdu = pdcch_pdu_bwp_coreset[bwpid-1][coresetid];
     if (!pdcch_pdu) {
       nfapi_nr_ul_dci_request_pdus_t *ul_dci_request_pdu = &ul_dci_req->ul_dci_pdu_list[ul_dci_req->numPdus];
       memset(ul_dci_request_pdu, 0, sizeof(nfapi_nr_ul_dci_request_pdus_t));
@@ -1556,7 +1556,7 @@ void nr_schedule_ulsch(module_id_t module_id, frame_t frame, sub_frame_t slot)
       pdcch_pdu = &ul_dci_request_pdu->pdcch_pdu.pdcch_pdu_rel15;
       ul_dci_req->numPdus += 1;
       nr_configure_pdcch(pdcch_pdu, ss, coreset, scc, sched_ctrl->active_bwp);
-      pdcch_pdu_bwp_coreset[bwpid][coresetid] = pdcch_pdu;
+      pdcch_pdu_bwp_coreset[bwpid-1][coresetid] = pdcch_pdu;
     }
 
     LOG_D(NR_MAC,"Configuring ULDCI/PDCCH in %d.%d\n", frame,slot);
@@ -1603,7 +1603,7 @@ void nr_schedule_ulsch(module_id_t module_id, frame_t frame, sub_frame_t slot)
                        ps->dci_format,
                        rnti_types[0],
                        pusch_pdu->bwp_size,
-                       bwpid);
+                      sched_ctrl->active_bwp? bwpid: 0);
 
     memset(sched_pusch, 0, sizeof(*sched_pusch));
   }
diff --git a/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h b/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
index ec98e61060e5b6655ee5ccf50b80454adf93bb37..362ebf28ef6ad22e69f245561081a7b3db3fe123 100644
--- a/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
+++ b/openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
@@ -72,7 +72,7 @@
 
 
 /* Defs */
-#define MAX_NUM_BWP 5
+#define MAX_NUM_BWP 4
 #define MAX_NUM_CORESET 2
 #define MAX_NUM_CCE 90
 #define MAX_HARQ_ROUNDS 4