diff --git a/lib/include/srslte/interfaces/ue_interfaces.h b/lib/include/srslte/interfaces/ue_interfaces.h
index 9a4ab6e06..57c3e3d24 100644
--- a/lib/include/srslte/interfaces/ue_interfaces.h
+++ b/lib/include/srslte/interfaces/ue_interfaces.h
@@ -338,6 +338,7 @@ public:
     uint32_t pid;
     uint16_t rnti;
     bool     is_sps_release;
+    uint32_t tti;
   } mac_grant_dl_t;
 
   typedef struct {
@@ -346,6 +347,7 @@ public:
     uint16_t rnti;
     bool     phich_available;
     bool     hi_value;
+    uint32_t tti_tx;
   } mac_grant_ul_t;
 
   typedef struct {
diff --git a/srsue/hdr/stack/mac/proc_ra.h b/srsue/hdr/stack/mac/proc_ra.h
index 955634714..b4ca0af2b 100644
--- a/srsue/hdr/stack/mac/proc_ra.h
+++ b/srsue/hdr/stack/mac/proc_ra.h
@@ -93,7 +93,7 @@ public:
   void pdcch_to_crnti(bool is_new_uplink_transmission);
   void timer_expired(uint32_t timer_id);
   void new_grant_dl(mac_interface_phy_lte::mac_grant_dl_t grant, mac_interface_phy_lte::tb_action_dl_t* action);
-  void tb_decoded_ok();
+  void tb_decoded_ok(const uint32_t tti);
 
   void start_noncont(uint32_t preamble_index, uint32_t prach_mask);
   bool contention_resolution_id_received(uint64_t uecri);
diff --git a/srsue/src/phy/cc_worker.cc b/srsue/src/phy/cc_worker.cc
index 6df4b19c9..2c8da3889 100644
--- a/srsue/src/phy/cc_worker.cc
+++ b/srsue/src/phy/cc_worker.cc
@@ -342,6 +342,7 @@ void cc_worker::dl_phy_to_mac_grant(srslte_pdsch_grant_t*
   /* Fill MAC dci structure */
   mac_grant->pid  = dl_dci->pid;
   mac_grant->rnti = dl_dci->rnti;
+  mac_grant->tti  = CURRENT_TTI;
 
   for (int i = 0; i < SRSLTE_MAX_CODEWORDS; i++) {
     mac_grant->tb[i].ndi         = dl_dci->tb[i].ndi;
@@ -711,6 +712,7 @@ void cc_worker::ul_phy_to_mac_grant(srslte_pusch_grant_t*
   mac_grant->tb.tbs         = phy_grant->tb.tbs / (uint32_t)8;
   mac_grant->tb.rv          = phy_grant->tb.rv;
   mac_grant->pid            = pid;
+  mac_grant->tti_tx         = CURRENT_TTI_TX;
 }
 
 int cc_worker::decode_pdcch_ul()
diff --git a/srsue/src/stack/mac/dl_harq.cc b/srsue/src/stack/mac/dl_harq.cc
index c60196f61..26d0698d0 100644
--- a/srsue/src/stack/mac/dl_harq.cc
+++ b/srsue/src/stack/mac/dl_harq.cc
@@ -345,13 +345,14 @@ void dl_harq_entity::dl_harq_process::dl_tb_process::tb_decoded(mac_interface_ph
     if (ack) {
       if (is_bcch) {
         if (harq_entity->pcap) {
-          harq_entity->pcap->write_dl_sirnti(payload_buffer_ptr, cur_grant.tb[tid].tbs, ack, 0);
+          harq_entity->pcap->write_dl_sirnti(payload_buffer_ptr, cur_grant.tb[tid].tbs, ack, cur_grant.tti);
         }
         Debug("Delivering PDU=%d bytes to Dissassemble and Demux unit (BCCH)\n", cur_grant.tb[tid].tbs);
         harq_entity->demux_unit->push_pdu_bcch(payload_buffer_ptr, cur_grant.tb[tid].tbs);
       } else {
         if (harq_entity->pcap) {
-          harq_entity->pcap->write_dl_crnti(payload_buffer_ptr, cur_grant.tb[tid].tbs, cur_grant.rnti, ack, 0);
+          harq_entity->pcap->write_dl_crnti(
+              payload_buffer_ptr, cur_grant.tb[tid].tbs, cur_grant.rnti, ack, cur_grant.tti);
         }
         if (cur_grant.rnti == harq_entity->rntis->temp_rnti) {
           Debug("Delivering PDU=%d bytes to Dissassemble and Demux unit (Temporal C-RNTI)\n", cur_grant.tb[tid].tbs);
diff --git a/srsue/src/stack/mac/mac.cc b/srsue/src/stack/mac/mac.cc
index 455746fe8..8b6b7fb0d 100644
--- a/srsue/src/stack/mac/mac.cc
+++ b/srsue/src/stack/mac/mac.cc
@@ -407,14 +407,14 @@ void mac::tb_decoded(uint32_t cc_idx, mac_grant_dl_t grant, bool ack[SRSLTE_MAX_
 {
   if (SRSLTE_RNTI_ISRAR(grant.rnti)) {
     if (ack[0]) {
-      ra_procedure.tb_decoded_ok();
+      ra_procedure.tb_decoded_ok(grant.tti);
     }
   } else if (grant.rnti == SRSLTE_PRNTI) {
     // Send PCH payload to RLC
     rlc_h->write_pdu_pcch(pch_payload_buffer, grant.tb[0].tbs);
 
     if (pcap) {
-      pcap->write_dl_pch(pch_payload_buffer, grant.tb[0].tbs, true, phy_h->get_current_tti());
+      pcap->write_dl_pch(pch_payload_buffer, grant.tb[0].tbs, true, grant.tti);
     }
   } else {
 
diff --git a/srsue/src/stack/mac/proc_ra.cc b/srsue/src/stack/mac/proc_ra.cc
index 3b97ff0e7..acadef930 100644
--- a/srsue/src/stack/mac/proc_ra.cc
+++ b/srsue/src/stack/mac/proc_ra.cc
@@ -164,7 +164,6 @@ void ra_proc::step(uint32_t tti_)
  */
 void ra_proc::state_pdcch_setup()
 {
-
   phy_interface_mac_lte::prach_info_t info = phy_h->prach_get_info();
   if (info.is_transmitted) {
     ra_tti  = info.tti_ra;
@@ -393,9 +392,10 @@ void ra_proc::new_grant_dl(mac_interface_phy_lte::mac_grant_dl_t grant, mac_inte
 /* Called upon the successful decoding of a TB addressed to RA-RNTI.
  * Processes the reception of a RAR as defined in 5.1.4
  */
-void ra_proc::tb_decoded_ok() {
+void ra_proc::tb_decoded_ok(const uint32_t tti)
+{
   if (pcap) {
-    pcap->write_dl_ranti(rar_pdu_buffer, rar_grant_nbytes, ra_rnti, true, 0);
+    pcap->write_dl_ranti(rar_pdu_buffer, rar_grant_nbytes, ra_rnti, true, tti);
   }
   
   rDebug("RAR decoded successfully TBS=%d\n", rar_grant_nbytes);
diff --git a/srsue/src/stack/mac/ul_harq.cc b/srsue/src/stack/mac/ul_harq.cc
index 5ef991afc..5202dcf03 100644
--- a/srsue/src/stack/mac/ul_harq.cc
+++ b/srsue/src/stack/mac/ul_harq.cc
@@ -286,7 +286,7 @@ void ul_harq_entity::ul_harq_process::new_grant_ul(mac_interface_phy_lte::mac_gr
       } else {
         rnti = harq_entity->rntis->crnti;
       }
-      harq_entity->pcap->write_ul_crnti(pdu_ptr, grant.tb.tbs, rnti, get_nof_retx(), 0);
+      harq_entity->pcap->write_ul_crnti(pdu_ptr, grant.tb.tbs, rnti, get_nof_retx(), grant.tti_tx);
     }
   } else if (has_grant()) {
     // Non-Adaptive Re-Tx