--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/wifi/model/ampdu-tag.h	Wed Jan 28 10:11:32 2015 -0800
@@ -0,0 +1,82 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013
+ *
+ * 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: Ghada Badawy <gbadawy@gmail.com>
+ */
+#ifndef AMPDU_TAG_H
+#define AMPDU_TAG_H
+
+#include "ns3/packet.h"
+
+namespace ns3 {
+
+class Tag;
+
+/**
+ * \ingroup wifi
+ *
+ * The aim of the AmpduTag is to provide means for a MAC to specify that a packet includes A-MPDU
+ * since this is done in HT-SIG and there is no HT-SIG representation in ns-3
+ */
+class AmpduTag : public Tag
+{
+public:
+  static TypeId GetTypeId (void);
+  virtual TypeId GetInstanceTypeId (void) const;
+
+  /**
+   * Create a AmpduTag with the default =0 no Ampdu
+   */
+  AmpduTag ();
+  /**
+   * Set m_ampdu to 1.
+   */
+  void SetAmpdu (bool supported);
+  /**
+   * \param noofmpdus the number of MPDUs
+   *
+   * Set the number of MPDUs in the A-MPDU.
+   */
+  void SetNoOfMpdus (uint8_t noofmpdus);
+
+  virtual void Serialize (TagBuffer i) const;
+  virtual void Deserialize (TagBuffer i);
+  virtual uint32_t GetSerializedSize () const;
+  virtual void Print (std::ostream &os) const;
+
+  /**
+   * \return true if it is an A-MPDU,
+   *         false otherwise.
+   *
+   * Returns m_ampdu
+   */
+  bool GetAmpdu (void) const;
+  /**
+   * \return the number of MPDUs in an A-MPDU
+   *
+   * Returns the number of MPDUs in an A-MPDU
+   */
+  uint8_t GetNoOfMpdus (void) const;
+
+private:
+  uint8_t m_ampdu;     //!< Flag whether it is an A-MPDU
+  uint8_t m_noOfMpdus; //!< number of MPDUs in the A-MPDU
+};
+
+} // namespace ns3
+
+#endif /* AMPDU_TAG_H */