diff --git a/openair1/SCHED/phy_procedures_lte_eNb.c b/openair1/SCHED/phy_procedures_lte_eNb.c
index 50fd920262..52e4090f81 100644
--- a/openair1/SCHED/phy_procedures_lte_eNb.c
+++ b/openair1/SCHED/phy_procedures_lte_eNb.c
@@ -2817,7 +2817,14 @@ void phy_procedures_eNB_common_RX(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc){
   const int frame        = proc->frame_rx;
   int offset             = (eNB->single_thread_flag==1) ? 0 : (subframe&1);
 
-  if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) return;
+  if ((fp->frame_type == TDD) && (subframe_select(fp,subframe)!=SF_UL)) {
+
+    if (eNB->node_function == NGFI_RRU_IF4p5) {
+      /// **** in TDD during DL send_IF4 of ULTICK to RCC **** ///
+      send_IF4p5(eNB, proc->frame_rx, proc->subframe_rx, IF4p5_PULTICK, 0);
+    }    
+    return;
+  }
 
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_ENB+offset, proc->frame_rx );
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_SUBFRAME_NUMBER_RX0_ENB+offset, proc->subframe_rx );
diff --git a/targets/RT/USER/lte-enb.c b/targets/RT/USER/lte-enb.c
index 5d0cfaee82..0b0324a176 100644
--- a/targets/RT/USER/lte-enb.c
+++ b/targets/RT/USER/lte-enb.c
@@ -1024,10 +1024,18 @@ void rx_fh_if4p5(PHY_VARS_eNB *eNB,int *frame,int *subframe) {
 
     //proc->frame_rx = (proc->frame_rx + proc->frame_offset)&1023;
     if (packet_type == IF4p5_PULFFT) {
-      LOG_D(PHY,"rx_fh:if4p5: frame %d, subframe %d, PULFFT symbol %d\n",f,sf,symbol_number);
+      LOG_D(PHY,"rx_fh_if4p5: frame %d, subframe %d, PULFFT symbol %d\n",f,sf,symbol_number);
 
       proc->symbol_mask[sf] = proc->symbol_mask[sf] | (1<<symbol_number);
-    } else if (packet_type == IF4p5_PRACH) {
+    } 
+    else if (packet_type == IF4p5_PULTICK) {
+      if (f!=*frame)
+	LOG_E(PHY,"rx_fh_if4p5: PULTICK received frame %d != expected %d\n",f,*frame);
+      if (sf!=*subframe)
+	LOG_E(PHY,"rx_fh_if4p5: PULTICK received subframe %d != expected %d\n",sf,*subframe);
+      break;
+    }
+    else if (packet_type == IF4p5_PRACH) {
       LOG_D(PHY,"rx_fh:if4p5: frame %d, subframe %d, PRACH\n",f,sf);
       // wakeup prach processing
       if (eNB->do_prach) eNB->do_prach(eNB,f,sf);