--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/wifi/model/ideal-wifi-manager.h	Fri Mar 04 01:26:54 2011 +0000
@@ -0,0 +1,85 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2006 INRIA
+ *
+ * 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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
+ */
+#ifndef IDEAL_WIFI_MANAGER_H
+#define IDEAL_WIFI_MANAGER_H
+
+#include <stdint.h>
+#include <vector>
+#include "wifi-mode.h"
+#include "wifi-remote-station-manager.h"
+
+namespace ns3 {
+
+/**
+ * \brief Ideal rate control algorithm
+ *
+ * This class implements an 'ideal' rate control algorithm
+ * similar to RBAR in spirit (see <i>A rate-adaptive MAC
+ * protocol for multihop wireless networks</i> by G. Holland,
+ * N. Vaidya, and P. Bahl.): every station keeps track of the
+ * snr of every packet received and sends back this snr to the
+ * original transmitter by an out-of-band mechanism. Each 
+ * transmitter keeps track of the last snr sent back by a receiver
+ * and uses it to pick a transmission mode based on a set
+ * of snr thresholds built from a target ber and transmission 
+ * mode-specific snr/ber curves.
+ */
+class IdealWifiManager : public WifiRemoteStationManager 
+{
+public:
+  static TypeId GetTypeId (void);
+  IdealWifiManager ();
+  virtual ~IdealWifiManager ();
+
+  virtual void SetupPhy (Ptr<WifiPhy> phy);
+
+private:
+  // overriden from base class
+  virtual WifiRemoteStation *DoCreateStation (void) const;
+  virtual void DoReportRxOk (WifiRemoteStation *station, 
+                             double rxSnr, WifiMode txMode);
+  virtual void DoReportRtsFailed (WifiRemoteStation *station);
+  virtual void DoReportDataFailed (WifiRemoteStation *station);
+  virtual void DoReportRtsOk (WifiRemoteStation *station,
+                              double ctsSnr, WifiMode ctsMode, double rtsSnr);
+  virtual void DoReportDataOk (WifiRemoteStation *station,
+                               double ackSnr, WifiMode ackMode, double dataSnr);
+  virtual void DoReportFinalRtsFailed (WifiRemoteStation *station);
+  virtual void DoReportFinalDataFailed (WifiRemoteStation *station);
+  virtual WifiMode DoGetDataMode (WifiRemoteStation *station, uint32_t size);
+  virtual WifiMode DoGetRtsMode (WifiRemoteStation *station);
+  virtual bool IsLowLatency (void) const;
+
+  // return the min snr needed to successfully transmit
+  // data with this mode at the specified ber.
+  double GetSnrThreshold (WifiMode mode) const;
+  void AddModeSnrThreshold (WifiMode mode, double ber);
+
+  typedef std::vector<std::pair<double,WifiMode> > Thresholds;
+
+  double m_ber;
+  Thresholds m_thresholds;
+  double m_minSnr;
+  double m_maxSnr;
+};
+
+} // namespace ns3
+
+#endif /* IDEAL_WIFI_MANAGER_H */