diff --git a/src/lte/model/rr-ff-mac-scheduler.cc b/src/lte/model/rr-ff-mac-scheduler.cc
index ba0738c4d..1e17aeec6 100644
--- a/src/lte/model/rr-ff-mac-scheduler.cc
+++ b/src/lte/model/rr-ff-mac-scheduler.cc
@@ -321,7 +321,7 @@ RrFfMacScheduler::DoSchedDlRlcBufferReq (const struct FfMacSchedSapProvider::Sch
 {
   NS_LOG_FUNCTION (this << params.m_rnti << (uint32_t) params.m_logicalChannelIdentity);
   // API generated by RLC for updating RLC parameters on a LC (tx and retx queues)
-  std::vector<FfMacSchedSapProvider::SchedDlRlcBufferReqParameters>::iterator it;
+  std::list<FfMacSchedSapProvider::SchedDlRlcBufferReqParameters>::iterator it;
   bool newLc = true;
   for (it = m_rlcBufferReq.begin (); it != m_rlcBufferReq.end (); it++)
     {
@@ -375,6 +375,12 @@ RrFfMacScheduler::GetRbgSize (int dlbandwidth)
   return (-1);
 }
 
+bool
+RrFfMacScheduler::SortRlcBufferReq (FfMacSchedSapProvider::SchedDlRlcBufferReqParameters i,FfMacSchedSapProvider::SchedDlRlcBufferReqParameters j)
+{
+  return (i.m_rnti<j.m_rnti);
+}
+
 
 void
 RrFfMacScheduler::DoSchedDlTriggerReq (const struct FfMacSchedSapProvider::SchedDlTriggerReqParameters& params)
@@ -385,7 +391,8 @@ RrFfMacScheduler::DoSchedDlTriggerReq (const struct FfMacSchedSapProvider::Sched
   RefreshDlCqiMaps ();
 
   // Get the actual active flows (queue!=0)
-  std::vector<FfMacSchedSapProvider::SchedDlRlcBufferReqParameters>::iterator it;
+  std::list<FfMacSchedSapProvider::SchedDlRlcBufferReqParameters>::iterator it;
+  m_rlcBufferReq.sort (SortRlcBufferReq);
   int nflows = 0;
   std::map <uint16_t,uint8_t> lcActivesPerRnti;
   std::map <uint16_t,uint8_t>::iterator itLcRnti;
diff --git a/src/lte/model/rr-ff-mac-scheduler.h b/src/lte/model/rr-ff-mac-scheduler.h
index 1d2807143..ca2d16d05 100644
--- a/src/lte/model/rr-ff-mac-scheduler.h
+++ b/src/lte/model/rr-ff-mac-scheduler.h
@@ -119,13 +119,15 @@ private:
 
   int GetRbgSize (int dlbandwidth);
   
+  static bool SortRlcBufferReq (FfMacSchedSapProvider::SchedDlRlcBufferReqParameters i,FfMacSchedSapProvider::SchedDlRlcBufferReqParameters j);
+  
   void RefreshDlCqiMaps(void);
   void RefreshUlCqiMaps(void);
 
   /*
    * Vectors of UE's RLC info
   */
-  std::vector <FfMacSchedSapProvider::SchedDlRlcBufferReqParameters> m_rlcBufferReq;
+  std::list <FfMacSchedSapProvider::SchedDlRlcBufferReqParameters> m_rlcBufferReq;
 
   /*
   * Map of UE's DL CQI P01 received