--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/devices/wifi/yans-wifi-channel.h	Wed Jun 11 16:19:28 2008 -0700
@@ -0,0 +1,120 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2006,2007 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 YANS_WIFI_CHANNEL_H
+#define YANS_WIFI_CHANNEL_H
+
+#include <vector>
+#include <stdint.h>
+#include "ns3/packet.h"
+#include "wifi-channel.h"
+#include "wifi-mode.h"
+#include "wifi-preamble.h"
+
+namespace ns3 {
+
+class NetDevice;
+class WifiNetDevice;
+class PropagationLossModel;
+class PropagationDelayModel;
+class YansWifiPhy;
+
+/**
+ * \brief A Yans wifi channel
+ *
+ * This wifi channel implements the propagation model described in
+ * "Yet Another Network Simulator", (http://cutebugs.net/files/wns2-yans.pdf).
+ *
+ * This class is expected to be used in tandem with the ns3::YansWifiPhy 
+ * class and contains a ns3::PropagationLossModel and a ns3::PropagationDelayModel.
+ * By default, no propagation models are set so, it is the caller's responsability
+ * to set them before using the channel.
+ */
+class YansWifiChannel : public WifiChannel
+{
+public:
+  static TypeId GetTypeId (void);
+
+  YansWifiChannel ();
+  virtual ~YansWifiChannel ();
+
+  /**
+   * \returns the number of network interfaces connected to 
+   *          this channel.
+   *
+   * Overriden from the NetDevice base class.
+   */
+  virtual uint32_t GetNDevices (void) const;
+
+  /**
+   * \param i index of the requested network interface.
+   * \returns the requested network interfaces connected to 
+   *          this channel.
+   *
+   * Overriden from the NetDevice base class.
+   * Indexes start at 0 and end at n-1.
+   */
+  virtual Ptr<NetDevice> GetDevice (uint32_t i) const;
+
+  virtual Ptr<WifiPhy> CreatePhy (Ptr<WifiNetDevice> device,
+                                  Ptr<Object> mobility,
+                                  UnsafeAttributeList list);
+
+  /**
+   * \param loss the new propagation loss model.
+   */
+  void SetPropagationLossModel (Ptr<PropagationLossModel> loss);
+  /**
+   * \param delay the new propagation delay model.
+   */
+  void SetPropagationDelayModel (Ptr<PropagationDelayModel> delay);
+
+  /**
+   * \param sender the device from which the packet is originating.
+   * \param packet the packet to send
+   * \param txPowerDbm the tx power associated to the packet
+   * \param wifiMode the tx mode associated to the packet
+   * \param preamble the preamble associated to the packet
+   *
+   * This method should not be invoked by normal users. It is 
+   * currently invoked only from WifiPhy::Send.
+   */
+  void Send (Ptr<YansWifiPhy> sender, Ptr<const Packet> packet, double txPowerDbm,
+             WifiMode wifiMode, WifiPreamble preamble) const;
+
+private:
+  struct Item {
+    Ptr<WifiNetDevice> device;
+    Ptr<YansWifiPhy> phy;
+    Ptr<Object> mobility;
+  };
+  typedef std::vector<struct Item> DeviceList;
+  void Receive (uint32_t i, Ptr<Packet> packet, double rxPowerDbm,
+                WifiMode txMode, WifiPreamble preamble) const;
+
+
+  DeviceList m_deviceList;
+  Ptr<PropagationLossModel> m_loss;
+  Ptr<PropagationDelayModel> m_delay;
+};
+
+} // namespace ns3
+
+
+#endif /* YANS_WIFI_CHANNEL_H */