diff --git a/lib/include/srsran/mac/pdu_queue.h b/lib/include/srsran/mac/pdu_queue.h
index 424c505b0..00aa3cde7 100644
--- a/lib/include/srsran/mac/pdu_queue.h
+++ b/lib/include/srsran/mac/pdu_queue.h
@@ -30,7 +30,7 @@ public:
   class process_callback
   {
   public:
-    virtual void process_pdu(uint8_t* buff, uint32_t len, channel_t channel, int ul_nof_prbs = -1) = 0;
+    virtual void process_pdu(uint8_t* buff, uint32_t len, uint32_t ue_cc_idx, channel_t channel, int ul_nof_prbs = -1) = 0;
   };
 
   pdu_queue(srslog::basic_logger& logger) : pool(DEFAULT_POOL_SIZE), callback(NULL), logger(logger) {}
@@ -38,7 +38,7 @@ public:
 
   uint8_t* request(uint32_t len);
   void     deallocate(const uint8_t* pdu);
-  void     push(const uint8_t* ptr, uint32_t len, channel_t channel = DCH, int ul_nof_prbs = -1);
+  void     push(const uint8_t* ptr, uint32_t len, uint32_t ue_cc_idx, channel_t channel = DCH, int ul_nof_prbs = -1);
 
   bool process_pdus();
 
@@ -51,6 +51,7 @@ private:
   typedef struct {
     uint8_t   ptr[MAX_PDU_LEN];
     uint32_t  len;
+    uint32_t  ue_cc_idx;
     channel_t channel;
     int       grant_nof_prbs;
 #ifdef SRSRAN_BUFFER_POOL_LOG_ENABLED
diff --git a/lib/src/mac/pdu_queue.cc b/lib/src/mac/pdu_queue.cc
index cc4481234..e80b0b89e 100644
--- a/lib/src/mac/pdu_queue.cc
+++ b/lib/src/mac/pdu_queue.cc
@@ -50,15 +50,16 @@ void pdu_queue::deallocate(const uint8_t* pdu)
 }
 
 /* Demultiplexing of logical channels and dissassemble of MAC CE
- * This function enqueues the packet and returns quicly because ACK
+ * This function enqueues the packet and returns quickly because ACK
  * deadline is important here.
  */
-void pdu_queue::push(const uint8_t* ptr, uint32_t len, channel_t channel, int grant_nof_prbs)
+void pdu_queue::push(const uint8_t* ptr, uint32_t len, uint32_t ue_cc_idx, channel_t channel, int grant_nof_prbs)
 {
   if (ptr) {
     pdu_t* pdu          = (pdu_t*)ptr;
     pdu->len            = len;
     pdu->channel        = channel;
+    pdu->ue_cc_idx      = ue_cc_idx;
     pdu->grant_nof_prbs = grant_nof_prbs;
     if (!pdu_q.try_push(pdu)) {
       logger.warning("Error pushing pdu: queue is full");
@@ -75,7 +76,7 @@ bool pdu_queue::process_pdus()
   pdu_t*   pdu;
   while (pdu_q.try_pop(pdu)) {
     if (callback) {
-      callback->process_pdu(pdu->ptr, pdu->len, pdu->channel, pdu->grant_nof_prbs);
+      callback->process_pdu(pdu->ptr, pdu->len, pdu->ue_cc_idx, pdu->channel, pdu->grant_nof_prbs);
     }
     cnt++;
     have_data = true;
diff --git a/srsenb/hdr/stack/mac/ue.h b/srsenb/hdr/stack/mac/ue.h
index 77d7354a5..cb7a21164 100644
--- a/srsenb/hdr/stack/mac/ue.h
+++ b/srsenb/hdr/stack/mac/ue.h
@@ -160,7 +160,7 @@ public:
   srsran_softbuffer_rx_t* get_rx_softbuffer(uint32_t enb_cc_idx, uint32_t tti);
 
   uint8_t*                     request_buffer(uint32_t tti, uint32_t enb_cc_idx, uint32_t len);
-  void                         process_pdu(srsran::unique_byte_buffer_t pdu, uint32_t grant_nof_prbs);
+  void                         process_pdu(srsran::unique_byte_buffer_t pdu, uint32_t ue_cc_idx, uint32_t grant_nof_prbs);
   srsran::unique_byte_buffer_t release_pdu(uint32_t tti, uint32_t enb_cc_idx);
   void                         clear_old_buffers(uint32_t tti);
 
diff --git a/srsenb/src/stack/mac/mac.cc b/srsenb/src/stack/mac/mac.cc
index 144e2dd5b..430f7e493 100644
--- a/srsenb/src/stack/mac/mac.cc
+++ b/srsenb/src/stack/mac/mac.cc
@@ -331,10 +331,10 @@ int mac::push_pdu(uint32_t tti_rx,
                   tti_rx,
                   nof_bytes,
                   (int)pdu->size());
-    auto process_pdu_task = [this, rnti, ul_nof_prbs](srsran::unique_byte_buffer_t& pdu) {
+    auto process_pdu_task = [this, rnti, enb_cc_idx, ul_nof_prbs](srsran::unique_byte_buffer_t& pdu) {
       srsran::rwlock_read_guard lock(rwlock);
       if (check_ue_active(rnti)) {
-        ue_db[rnti]->process_pdu(std::move(pdu), ul_nof_prbs);
+        ue_db[rnti]->process_pdu(std::move(pdu), enb_cc_idx, ul_nof_prbs);
       } else {
         logger.debug("Discarding PDU rnti=0x%x", rnti);
       }
diff --git a/srsenb/src/stack/mac/ue.cc b/srsenb/src/stack/mac/ue.cc
index 0772a1491..4a54a7294 100644
--- a/srsenb/src/stack/mac/ue.cc
+++ b/srsenb/src/stack/mac/ue.cc
@@ -287,7 +287,7 @@ uint32_t ue::set_ta(int ta_)
   return nof_cmd;
 }
 
-void ue::process_pdu(srsran::unique_byte_buffer_t pdu, uint32_t grant_nof_prbs)
+void ue::process_pdu(srsran::unique_byte_buffer_t pdu, uint32_t ue_cc_idx, uint32_t grant_nof_prbs)
 {
   // Unpack ULSCH MAC PDU
   mac_msg_ul.init_rx(pdu->size(), true);
@@ -300,11 +300,11 @@ void ue::process_pdu(srsran::unique_byte_buffer_t pdu, uint32_t grant_nof_prbs)
   }
 
   if (pcap != nullptr) {
-    pcap->write_ul_crnti(pdu->data(), pdu->size(), rnti, true, last_tti, UL_CC_IDX);
+    pcap->write_ul_crnti(pdu->data(), pdu->size(), rnti, true, last_tti, ue_cc_idx);
   }
 
   if (pcap_net != nullptr) {
-    pcap_net->write_ul_crnti(pdu->data(), pdu->size(), rnti, true, last_tti, UL_CC_IDX);
+    pcap_net->write_ul_crnti(pdu->data(), pdu->size(), rnti, true, last_tti, ue_cc_idx);
   }
 
   uint32_t lcid_most_data = 0;
diff --git a/srsue/hdr/stack/mac/demux.h b/srsue/hdr/stack/mac/demux.h
index b010252c9..cf30a4c32 100644
--- a/srsue/hdr/stack/mac/demux.h
+++ b/srsue/hdr/stack/mac/demux.h
@@ -56,7 +56,7 @@ public:
 
   bool get_uecrid_successful();
 
-  void process_pdu(uint8_t* pdu, uint32_t nof_bytes, srsran::pdu_queue::channel_t channel, int ul_nof_prbs);
+  void process_pdu(uint8_t* pdu, uint32_t nof_bytes, uint32_t cc_idx, srsran::pdu_queue::channel_t channel, int ul_nof_prbs);
   void mch_start_rx(uint32_t lcid);
 
 private:
diff --git a/srsue/src/stack/mac/demux.cc b/srsue/src/stack/mac/demux.cc
index eeff692b0..3a2d74a65 100644
--- a/srsue/src/stack/mac/demux.cc
+++ b/srsue/src/stack/mac/demux.cc
@@ -123,7 +123,7 @@ void demux::push_pdu(uint8_t* buff, uint32_t nof_bytes, uint32_t tti)
   // Process Real-Time PDUs
   process_sch_pdu_rt(buff, nof_bytes, tti);
 
-  return pdus.push(buff, nof_bytes, srsran::pdu_queue::DCH);
+  return pdus.push(buff, nof_bytes, 0, srsran::pdu_queue::DCH);
 }
 
 /* Demultiplexing of MAC PDU associated with SI-RNTI. The PDU passes through
@@ -147,7 +147,7 @@ bool demux::process_pdus()
   return pdus.process_pdus();
 }
 
-void demux::process_pdu(uint8_t* mac_pdu, uint32_t nof_bytes, srsran::pdu_queue::channel_t channel, int ul_nof_prbs)
+void demux::process_pdu(uint8_t* mac_pdu, uint32_t nof_bytes, uint32_t cc_idx, srsran::pdu_queue::channel_t channel, int ul_nof_prbs)
 {
   Debug("Processing MAC PDU channel %d", channel);
   switch (channel) {