Merge remote-tracking branch 'origin/add-dmrs-test' into NR_MCS_BLER

openair1/PHY/NR_TRANSPORT/nr_dlsch.c

@@ -159,7 +159,7 @@ uint8_t nr_generate_pdsch(PHY_VARS_gNB *gNB,
     uint16_t nb_re = ((12*rel15->NrOfSymbols)-nb_re_dmrs*dmrs_len-xOverhead)*rel15->rbSize*rel15->nrOfLayers;
     uint8_t Qm = rel15->qamModOrder[0];
     uint32_t encoded_length = nb_re*Qm;
-    int16_t mod_dmrs[14][n_dmrs<<1] __attribute__ ((aligned(16)));
+    int16_t mod_dmrs[14][n_dmrs*4] __attribute__ ((aligned(16)));
 
     /* PTRS */
     uint16_t beta_ptrs = 1;

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c

@@ -2166,8 +2166,8 @@ int get_num_dmrs(uint16_t dmrs_mask ) {
   return(num_dmrs);
 }
 /* returns the total DMRS symbols in a slot*/
-uint8_t get_num_dmrs_symbols(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols){
-  return get_num_dmrs(fill_dmrs_mask(pdsch_Config,dmrs_TypeA_Position,NrOfSymbols));
+uint8_t get_num_dmrs_symbols(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols,int startSymbol){
+  return get_num_dmrs(fill_dmrs_mask(pdsch_Config,dmrs_TypeA_Position,NrOfSymbols,startSymbol));
 }
 
 // Table 5.1.2.2.1-1 38.214
@@ -2806,9 +2806,10 @@ int is_nr_UL_slot(NR_ServingCellConfigCommon_t *scc, slot_t slot, lte_frame_type
   else return(slot_in_period >= slots1+scc->tdd_UL_DL_ConfigurationCommon->pattern2->nrofDownlinkSlots ? 1 : 0);    
 }
 
-int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols) {
+int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols,int startSymbol) {
 
   int l0;
+  int ld = NrOfSymbols;
   if (dmrs_TypeA_Position == NR_ServingCellConfigCommon__dmrs_TypeA_Position_pos2) l0=2;
   else if (dmrs_TypeA_Position == NR_ServingCellConfigCommon__dmrs_TypeA_Position_pos3) l0=3;
   else AssertFatal(1==0,"Illegal dmrs_TypeA_Position %d\n",(int)dmrs_TypeA_Position);
@@ -2819,8 +2820,9 @@ int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,i
     if (pdsch_Config->dmrs_DownlinkForPDSCH_MappingTypeA &&
 	pdsch_Config->dmrs_DownlinkForPDSCH_MappingTypeA->present == NR_SetupRelease_DMRS_DownlinkConfig_PR_setup) {
       // Relative to start of slot
+      ld += startSymbol;
       NR_DMRS_DownlinkConfig_t *dmrs_config = (NR_DMRS_DownlinkConfig_t *)pdsch_Config->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup;
-      AssertFatal(NrOfSymbols>1 && NrOfSymbols < 15,"Illegal NrOfSymbols %d\n",NrOfSymbols);
+      AssertFatal(ld>1 && ld < 15,"Illegal l_d %d\n",ld);
       int pos2=0;
       if (dmrs_config->maxLength == NULL) {
 	// this is Table 7.4.1.1.2-3: PDSCH DM-RS positions l for single-symbol DM-RS
@@ -2829,7 +2831,7 @@ int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,i
 	  return(1<<l0);
 	
 	
-	switch (NrOfSymbols) {
+	switch (ld) {
 	case 2 :
 	case 3 :
 	case 4 :
@@ -2870,10 +2872,10 @@ int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,i
       }
       else {
 	// Table 7.4.1.1.2-4: PDSCH DM-RS positions l for double-symbol DM-RS.
-	AssertFatal(NrOfSymbols>3,"Illegal NrOfSymbols %d for len2 DMRS\n",NrOfSymbols);
-	if (NrOfSymbols < 10) return(1<<l0);
-	if (NrOfSymbols < 13 && *dmrs_config->dmrs_AdditionalPosition==NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0) return(1<<l0);
-	if (NrOfSymbols < 13 && *dmrs_config->dmrs_AdditionalPosition!=NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0) return(1<<l0 | 1<<8);
+	AssertFatal(ld>3,"Illegal l_d %d for len2 DMRS\n",ld);
+	if (ld < 10) return(1<<l0);
+	if (ld < 13 && *dmrs_config->dmrs_AdditionalPosition==NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0) return(1<<l0);
+	if (ld < 13 && *dmrs_config->dmrs_AdditionalPosition!=NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0) return(1<<l0 | 1<<8);
 	if (*dmrs_config->dmrs_AdditionalPosition!=NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0) return(1<<l0);
 	if (*dmrs_config->dmrs_AdditionalPosition!=NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos1) return(1<<l0 | 1<<10);
         if (*dmrs_config->dmrs_AdditionalPosition==NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0) return(1<<l0);

openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.h

@@ -47,7 +47,7 @@ uint64_t from_nrarfcn(int nr_bandP, uint8_t scs_index, uint32_t dl_nrarfcn);
 
 uint32_t to_nrarfcn(int nr_bandP, uint64_t dl_CarrierFreq, uint8_t scs_index, uint32_t bw);
 
-int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols);
+int16_t fill_dmrs_mask(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols,int startSymbol);
 
 int is_nr_DL_slot(NR_ServingCellConfigCommon_t *scc,slot_t slotP);
 
@@ -152,7 +152,7 @@ bool set_ul_ptrs_values(NR_PTRS_UplinkConfig_t *ul_ptrs_config,
                         uint8_t *K_ptrs, uint8_t *L_ptrs,
                         uint8_t *reOffset, uint8_t *maxNumPorts, uint8_t *ulPower,
                         uint8_t NrOfSymbols);
-uint8_t get_num_dmrs_symbols(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols);
+uint8_t get_num_dmrs_symbols(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols,int startSymbol);
 
 /* \brief Set the transform precoding according to 6.1.3 of 3GPP TS 38.214 version 16.3.0 Release 16
 @param    *pusch_config,   pointer to pusch config

openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c

@@ -704,7 +704,8 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     /* dmrs symbol positions*/
     dlsch_config_pdu_1_0->dlDmrsSymbPos = fill_dmrs_mask(pdsch_config,
 							 mac->scc->dmrs_TypeA_Position,
-               dlsch_config_pdu_1_0->start_symbol+dlsch_config_pdu_1_0->number_symbols);
+               dlsch_config_pdu_1_0->number_symbols,
+               dlsch_config_pdu_1_0->start_symbol);
     dlsch_config_pdu_1_0->dmrsConfigType = mac->DLbwp[0]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1;
     /* 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)
@@ -869,7 +870,8 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     /* dmrs symbol positions*/
     dlsch_config_pdu_1_1->dlDmrsSymbPos = fill_dmrs_mask(pdsch_config,
 							 mac->scc->dmrs_TypeA_Position,
-							 dlsch_config_pdu_1_1->number_symbols);
+							 dlsch_config_pdu_1_1->number_symbols,
+               dlsch_config_pdu_1_1->start_symbol);
     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 ? 0 : 1;
     /* 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 */

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_bch.c

@@ -370,7 +370,7 @@ void schedule_control_sib1(module_id_t module_id,
 
   // Calculate number of PRB_DMRS
   uint8_t N_PRB_DMRS = gNB_mac->sched_ctrlCommon->pdsch_semi_static.numDmrsCdmGrpsNoData * 6;
-  uint16_t dlDmrsSymbPos = fill_dmrs_mask(gNB_mac->sched_ctrlCommon->active_bwp->bwp_Dedicated->pdsch_Config->choice.setup, gNB_mac->common_channels->ServingCellConfigCommon->dmrs_TypeA_Position, startSymbolIndex+nrOfSymbols);
+  uint16_t dlDmrsSymbPos = fill_dmrs_mask(gNB_mac->sched_ctrlCommon->active_bwp->bwp_Dedicated->pdsch_Config->choice.setup, gNB_mac->common_channels->ServingCellConfigCommon->dmrs_TypeA_Position, nrOfSymbols, startSymbolIndex);
   uint16_t dmrs_length = get_num_dmrs(dlDmrsSymbPos);
 
   int rbSize = 0;
@@ -477,7 +477,7 @@ void nr_fill_nfapi_dl_sib1_pdu(int Mod_idP,
   pdsch_pdu_rel15->StartSymbolIndex = StartSymbolIndex;
   pdsch_pdu_rel15->NrOfSymbols = NrOfSymbols;
 
-  pdsch_pdu_rel15->dlDmrsSymbPos = fill_dmrs_mask(bwp->bwp_Dedicated->pdsch_Config->choice.setup, scc->dmrs_TypeA_Position, pdsch_pdu_rel15->StartSymbolIndex+pdsch_pdu_rel15->NrOfSymbols);
+  pdsch_pdu_rel15->dlDmrsSymbPos = fill_dmrs_mask(bwp->bwp_Dedicated->pdsch_Config->choice.setup, scc->dmrs_TypeA_Position, pdsch_pdu_rel15->NrOfSymbols, pdsch_pdu_rel15->StartSymbolIndex);
 
   LOG_D(MAC,"dlDmrsSymbPos = 0x%x\n", pdsch_pdu_rel15->dlDmrsSymbPos);
 
@@ -603,7 +603,7 @@ void schedule_nr_sib1(module_id_t module_idP, frame_t frameP, sub_frame_t slotP)
       // Calculate number of PRB_DMRS
       uint8_t N_PRB_DMRS = gNB_mac->sched_ctrlCommon->pdsch_semi_static.numDmrsCdmGrpsNoData * 6;
       uint16_t dlDmrsSymbPos = fill_dmrs_mask(gNB_mac->sched_ctrlCommon->active_bwp->bwp_Dedicated->pdsch_Config->choice.setup,
-                                              gNB_mac->common_channels->ServingCellConfigCommon->dmrs_TypeA_Position, startSymbolIndex+nrOfSymbols);
+                                              gNB_mac->common_channels->ServingCellConfigCommon->dmrs_TypeA_Position, startSymbolIndex, nrOfSymbols);
       uint16_t dmrs_length = get_num_dmrs(dlDmrsSymbPos);
 
       const uint32_t TBS = nr_compute_tbs(nr_get_Qm_dl(gNB_mac->sched_ctrlCommon->sched_pdsch.mcs, gNB_mac->sched_ctrlCommon->pdsch_semi_static.mcsTableIdx),

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -378,6 +378,33 @@ int nr_write_ce_dlsch_pdu(module_id_t module_idP,
   return offset;
 }
 
+void getStartNrOfSymbols(NR_BWP_Downlink_t *bwp, int tda, int *startSymbol, int *nrOfSymbols) {
+  struct NR_PDSCH_TimeDomainResourceAllocationList *tdaList =
+    bwp->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
+  AssertFatal(tda < tdaList->list.count,
+              "time_domain_allocation %d>=%d\n",
+              tda,
+              tdaList->list.count);
+
+  const int startSymbolAndLength = tdaList->list.array[tda]->startSymbolAndLength;
+  SLIV2SL(startSymbolAndLength, startSymbol, nrOfSymbols);
+}
+
+nfapi_nr_dmrs_type_e getDmrsConfigType(NR_BWP_Downlink_t *bwp) {
+  return bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1;
+}
+
+uint8_t getN_PRB_DMRS(NR_BWP_Downlink_t *bwp, int numDmrsCdmGrpsNoData) {
+  const nfapi_nr_dmrs_type_e dmrsConfigType = getDmrsConfigType(bwp);
+  if (dmrsConfigType == NFAPI_NR_DMRS_TYPE1) {
+    // if no data in dmrs cdm group is 1 only even REs have no data
+    // if no data in dmrs cdm group is 2 both odd and even REs have no data
+    return numDmrsCdmGrpsNoData * 6;
+  } else {
+    return numDmrsCdmGrpsNoData * 4;
+  }
+}
+
 #define BLER_UPDATE_FRAME 10
 #define BLER_TARGET 0.10f
 #define BLER_THRESHOLD 0.03f

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

@@ -164,7 +164,8 @@ void nr_schedule_css_dlsch_phytest(module_id_t   module_idP,
     pdsch_pdu_rel15->NrOfSymbols      = NrOfSymbols;
     pdsch_pdu_rel15->dlDmrsSymbPos = fill_dmrs_mask(NULL,
 						    scc->dmrs_TypeA_Position,
-						    NrOfSymbols);
+						    NrOfSymbols,
+                StartSymbolIndex);
 
     /*
     AssertFatal(k0==0,"k0 is not zero for Initial DL BWP TimeDomain Alloc\n");

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

@@ -290,10 +290,14 @@ void nr_set_pdsch_semi_static(const NR_ServingCellConfigCommon_t *scc,
   // if no data in dmrs cdm group is 1 only even REs have no data
   // if no data in dmrs cdm group is 2 both odd and even REs have no data
   ps->N_PRB_DMRS = num_dmrs_cdm_grps_no_data * (ps->dmrsConfigType == NFAPI_NR_DMRS_TYPE1 ? 6 : 4);
-  ps->N_DMRS_SLOT =
-      get_num_dmrs_symbols(bwp->bwp_Dedicated->pdsch_Config->choice.setup, scc->dmrs_TypeA_Position, ps->nrOfSymbols);
-  ps->dl_dmrs_symb_pos =
-      fill_dmrs_mask(bwp->bwp_Dedicated->pdsch_Config->choice.setup, scc->dmrs_TypeA_Position, ps->nrOfSymbols);
+  ps->N_DMRS_SLOT = get_num_dmrs_symbols(bwp->bwp_Dedicated->pdsch_Config->choice.setup,
+                                         scc->dmrs_TypeA_Position,
+                                         ps->nrOfSymbols,
+                                         ps->startSymbolIndex);
+  ps->dl_dmrs_symb_pos = fill_dmrs_mask(bwp->bwp_Dedicated->pdsch_Config->choice.setup,
+                                        scc->dmrs_TypeA_Position,
+                                        ps->nrOfSymbols,
+                                        ps->startSymbolIndex);
 }
 
 void nr_set_pusch_semi_static(const NR_ServingCellConfigCommon_t *scc,

openair2/RRC/NR/rrc_gNB_reconfig.c

@@ -71,8 +71,8 @@ void fill_default_initialDownlinkBWP(NR_BWP_Downlink_t *bwp, NR_ServingCellConfi
   bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->scramblingID0=NULL;
   bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->scramblingID1=NULL;
   bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS=NULL;
-  bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition));
-  *bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0;
+  bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NULL; //calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition));
+  //*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos1;
 }
 
 void fill_default_coresetZero(NR_ControlResourceSet_t *coreset0, NR_ServingCellConfigCommon_t *servingcellconfigcommon) {
@@ -299,8 +299,8 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->scramblingID1=NULL;
  secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS=NULL;
 
- secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = calloc(1,sizeof(*secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition));
- *secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0;
+ secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NULL; //calloc(1,sizeof(*secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition));
+ //*secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos1;
 
 
  secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->tci_StatesToAddModList=calloc(1,sizeof(*secondaryCellGroup->spCellConfig->spCellConfigDedicated->initialDownlinkBWP->pdsch_Config->choice.setup->tci_StatesToAddModList));
@@ -646,8 +646,8 @@ void fill_default_secondaryCellGroup(NR_ServingCellConfigCommon_t *servingcellco
  if (!servingcellconfigdedicated) {
    bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->phaseTrackingRS=NULL;
  }
- bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition));
- *bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos0;
+ bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NULL; //calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition));
+ //*bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_AdditionalPosition = NR_DMRS_DownlinkConfig__dmrs_AdditionalPosition_pos1;
 
  bwp->bwp_Dedicated->pdsch_Config->choice.setup->tci_StatesToAddModList=calloc(1,sizeof(*bwp->bwp_Dedicated->pdsch_Config->choice.setup->tci_StatesToAddModList));
 

targets/PROJECTS/GENERIC-LTE-EPC/CONF/testing_gnb.conf

@@ -249,7 +249,7 @@ RUs = (
          max_pdschReferenceSignalPower = -27;
          max_rxgain                    = 114;
          eNB_instances  = [0];
-         clock_src = "external";
+         #clock_src = "external";
     }
 );