diff --git a/src/lte/model/lte-enb-mac.cc b/src/lte/model/lte-enb-mac.cc
index d232e3178..e4b070fb2 100644
--- a/src/lte/model/lte-enb-mac.cc
+++ b/src/lte/model/lte-enb-mac.cc
@@ -431,6 +431,7 @@ LteEnbMac::DoSubframeIndication (uint32_t frameNo, uint32_t subframeNo)
 
   // Get downlink transmission opportunities
   FfMacSchedSapProvider::SchedDlTriggerReqParameters params;  // to be filled
+  params.m_sfnSf = ((0xFF & frameNo) << 4) | (0xF & subframeNo);
   m_schedSapProvider->SchedDlTriggerReq (params);
 
 
diff --git a/src/lte/test/lte-test-rr-ff-mac-scheduler.cc b/src/lte/test/lte-test-rr-ff-mac-scheduler.cc
index 1648d95de..a80759bf2 100644
--- a/src/lte/test/lte-test-rr-ff-mac-scheduler.cc
+++ b/src/lte/test/lte-test-rr-ff-mac-scheduler.cc
@@ -114,7 +114,7 @@ LenaRrFfMacSchedulerTestCase::DoRun (void)
   NodeContainer enbNodes;
   NodeContainer ueNodes;
   enbNodes.Create (1);
-  m_nUser = 8;
+  m_nUser = 6;
   ueNodes.Create (m_nUser);
   
   // Install Mobility Model
@@ -144,7 +144,7 @@ LenaRrFfMacSchedulerTestCase::DoRun (void)
   mm->SetPosition (Vector (m_dist, 0.0, 0.0));
   
   lena->EnableRlcTraces ();
-  double simulationTime = 0.020;
+  double simulationTime = 0.040;
   Simulator::Stop (Seconds (simulationTime));
   
   Ptr<RlcStatsCalculator> rlcStats = lena->GetRlcStats ();
diff --git a/src/lte/test/lte-test-rr-ff-mac-scheduler.h b/src/lte/test/lte-test-rr-ff-mac-scheduler.h
index a4a7d906d..ddbc4769d 100644
--- a/src/lte/test/lte-test-rr-ff-mac-scheduler.h
+++ b/src/lte/test/lte-test-rr-ff-mac-scheduler.h
@@ -40,11 +40,16 @@ using namespace ns3;
 class LenaRrFfMacSchedulerTestCase : public TestCase
 {
   public:
-    LenaRrFfMacSchedulerTestCase ();
+    LenaRrFfMacSchedulerTestCase (uint16_t nUser, uint16_t nLc, uint16_t dist, double thrRef);
     virtual ~LenaRrFfMacSchedulerTestCase ();
 
   private:
     virtual void DoRun (void);
+    uint16_t m_nUser;
+    uint16_t m_nLc;
+    uint16_t m_dist;
+    double m_thrRef;
+    
 };