--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/devices/wifi/wifi-channel.cc	Fri Aug 24 16:27:59 2007 +0200
@@ -0,0 +1,82 @@
+/* -*-  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>
+ */
+#include "ns3/packet.h"
+#include "ns3/simulator.h"
+#include "ns3/mobility-model.h"
+#include "ns3/net-device.h"
+#include "ns3/node.h"
+#include "wifi-channel.h"
+#include "propagation-loss-model.h"
+#include "propagation-delay-model.h"
+
+
+namespace ns3 {
+
+WifiChannel::WifiChannel ()
+{}
+WifiChannel::~WifiChannel ()
+{}
+
+void 
+WifiChannel::Add (Ptr<NetDevice> device,  ReceiveCallback callback)
+{
+  m_deviceList.push_back (std::make_pair (device, callback));
+}
+void 
+WifiChannel::Send (Ptr<NetDevice> sender, const Packet &packet, double txPowerDbm,
+                   uint64_t wifiMode) const
+{
+  Ptr<MobilityModel> senderMobility = sender->GetNode ()->QueryInterface<MobilityModel> (MobilityModel::iid);
+  uint32_t j = 0;
+  for (DeviceList::const_iterator i = m_deviceList.begin (); i != m_deviceList.end (); i++)
+    {
+      if (sender != i->first)
+        {
+          Ptr<MobilityModel> receiverMobility = i->first->GetNode ()->QueryInterface<MobilityModel> (MobilityModel::iid);
+          double distance = senderMobility->GetDistanceFrom (receiverMobility);
+          Time delay = m_delay->GetDelay (distance);
+          double rxPowerDbm = m_loss->GetRxPower (txPowerDbm, distance);
+          Simulator::Schedule (delay, &WifiChannel::Receive, this, 
+                               j, packet, rxPowerDbm, wifiMode);
+        }
+      j++;
+    }
+}
+
+void
+WifiChannel::Receive (uint32_t i,
+                      const Packet &packet, double rxPowerDbm,
+                      uint64_t wifiMode) const
+{
+  m_deviceList[i].second (packet, rxPowerDbm, wifiMode);
+}
+
+uint32_t 
+WifiChannel::GetNDevices (void) const
+{
+  return m_deviceList.size ();
+}
+Ptr<NetDevice> 
+WifiChannel::GetDevice (uint32_t i) const
+{
+  return m_deviceList[i].first;
+}
+
+} // namespace ns3