diff -r 4dc5c9d91cf2 src/lte/model/lte-rlc-am.cc
--- a/src/lte/model/lte-rlc-am.cc       Thu Oct 06 22:55:29 2016 -0700
+++ b/src/lte/model/lte-rlc-am.cc       Thu Oct 20 15:04:42 2016 +0000
@@ -1099,6 +1099,7 @@
           
         } // loop over SN : VT(A) <= SN < ACK SN
       
+      DoReportBufferStatus();
       return;
 
     }
@@ -1612,17 +1613,10 @@
       r.statusPduSize = 0;
     }
 
-  if ( r.txQueueSize != 0 || r.retxQueueSize != 0 || r.statusPduSize != 0 )
-    {
-      NS_LOG_INFO ("Send ReportBufferStatus: " << r.txQueueSize << ", " << r.txQueueHolDelay << ", " 
-                                               << r.retxQueueSize << ", " << r.retxQueueHolDelay << ", " 
-                                               << r.statusPduSize);
-      m_macSapProvider->ReportBufferStatus (r);
-    }
-  else
-    {
-      NS_LOG_INFO ("ReportBufferStatus don't needed");
-    }
+    NS_LOG_INFO ("Send ReportBufferStatus: " << r.txQueueSize << ", " << r.txQueueHolDelay << ", " 
+                                             << r.retxQueueSize << ", " << r.retxQueueHolDelay << ", " 
+                                             << r.statusPduSize);
+    m_macSapProvider->ReportBufferStatus (r);
 }