diff --git a/utils/stats/stats-tree.h b/utils/stats/stats-tree.h
new file mode 100644
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--- /dev/null
+++ b/utils/stats/stats-tree.h
@@ -0,0 +1,92 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef STATS_TREE_H
+#define STATS_TREE_H
+
+#include "../trie/trie.h"
+#include "load-stats-node.h"
+#include "ns3/ndn-name-components.h"
+#include "ns3/ptr.h"
+
+namespace ns3 {
+namespace ndn {
+namespace ndnSIM {
+
+class StatsTree
+{
+public:
+  typedef trie< NameComponents,
+                non_pointer_traits< LoadStatsNode >, void* > tree_type;
+  
+  StatsTree ();
+
+  void
+  Step ();
+  
+  void
+  NewPitEntry (const NameComponents &key);
+
+  void
+  Incoming (const NameComponents &key, Ptr<Face> face);
+
+  void
+  Outgoing (const NameComponents &key, Ptr<Face> face);
+
+  void
+  Satisfy (const NameComponents &key);
+
+  void
+  Timeout (const NameComponents &key);
+
+  void
+  Rx (const NameComponents &key, Ptr<Face> face, uint32_t amount);
+
+  void
+  Tx (const NameComponents &key, Ptr<Face> face, uint32_t amount);
+
+  // const LoadStatsNode &
+  // Get (const NameComponents &key) const;
+  const LoadStatsNode &
+  operator [] (const NameComponents &key) const;
+
+  void
+  RemoveFace (Ptr<Face> face);
+  
+private:
+  const LoadStatsNode &
+  WalkLeftRightRoot (tree_type *node);
+
+  
+private:
+  tree_type m_tree;
+
+  friend std::ostream &
+  operator << (std::ostream &os, const StatsTree &tree);
+};
+
+std::ostream &
+operator << (std::ostream &os, const StatsTree &tree);
+
+} // namespace ndnSIM
+} // namespace ndn
+} // namespace ns3
+
+#endif // STATS_TREE_H