７月２１日に受け取ったソースコード raw socketを使うようにして待ち行列のサイズを小さくしパケット損失が正しく起こるようにした。

collision_sample.cc

/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2009 The Boeing Company
 *
 * 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
 *
 */

#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/mobility-module.h"
#include "ns3/config-store-module.h"
#include "ns3/wifi-module.h"
#include "ns3/internet-module.h"
#include "ns3/propagation-module.h"
#include "ns3/olsr-helper.h"

NS_LOG_COMPONENT_DEFINE ("CollisionSample");

using namespace ns3;

void ReceivePacket (Ptr<Socket> socket)
{
  NS_LOG_UNCOND ("Received one packet!");
}

static void GenerateTraffic (Ptr<Socket> socket, uint32_t pktSize,
                             uint32_t pktCount, Time pktInterval )
{
  if (pktCount > 0)
    {
      socket->Send (Create<Packet> (pktSize));
      Simulator::Schedule (pktInterval, &GenerateTraffic,
                           socket, pktSize,pktCount-1, pktInterval);
    }
  else
    {
      socket->Close ();
    }
}

void myRxOkCallback(Ptr<Packet> p, double snr, WifiMode mode, enum WifiPreamble preamble){
  NS_LOG_UNCOND("myRxOkCallback, snr=" << snr);
}

void myRxErrorCallback(Ptr<const Packet> packet, double snr) {
  NS_LOG_UNCOND("myRxErrorCallback, snr=" << snr);
}


int main (int argc, char *argv[])
{
  //LogComponentEnableAll(LOG_ALL);
  std::string phyMode ("DsssRate1Mbps");
  double rss = -80;  // -dBm
  double Prss = -80;
  //double Irss = -95;
  uint32_t packetSize = 1000; // bytes
  uint32_t numPackets = 1;
  uint32_t numPackets3 = 1;
  double interval = 0.1; // seconds
  bool verbose = false;
  double offset = 91;

  CommandLine cmd;

  cmd.AddValue ("phyMode", "Wifi Phy mode", phyMode);
  cmd.AddValue ("rss", "received signal strength", rss);
  cmd.AddValue ("packetSize", "size of application packet sent", packetSize);
  cmd.AddValue ("numPackets", "number of packets generated", numPackets);
  cmd.AddValue ("interval", "interval (seconds) between packets", interval);
  cmd.AddValue ("verbose", "turn on all WifiNetDevice log components", verbose);

  cmd.Parse (argc, argv);
  // Convert to time object
  Time interPacketInterval = Seconds (interval);

  // disable fragmentation for frames below 2200 bytes
  Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue ("2200"));
  // turn off RTS/CTS for frames below 2200 bytes
  Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue ("2200"));
  // Fix non-unicast data rate to be the same as that of unicast
  Config::SetDefault ("ns3::WifiRemoteStationManager::NonUnicastMode",
                      StringValue (phyMode));

  NodeContainer c;
  c.Create (3);

  // The below set of helpers will help us to put together the wifi NICs we want
  WifiHelper wifi_helper;
  if (verbose)
    {
      wifi_helper.EnableLogComponents ();  // Turn on all Wifi logging
    }
  wifi_helper.SetStandard (WIFI_PHY_STANDARD_80211b);


  // 2. Place nodes somehow, this is required by every wireless simulation
  for (size_t i = 0; i < 3; ++i)
    {
      c.Get (i)->AggregateObject (CreateObject<ConstantPositionMobilityModel> ());
    }

  YansWifiPhyHelper wifiPhy =  YansWifiPhyHelper::Default ();
  // set it to zero; otherwise, gain will be added
  wifiPhy.Set ("RxGain", DoubleValue (0) );
  //この閾値より大きいと受信可能
  wifiPhy.Set ("CcaMode1Threshold", DoubleValue (0.0) );

  // 4. Create & setup wifi channel
  YansWifiChannelHelper wifiChannel;
  wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
  wifiChannel.AddPropagationLoss ("ns3::LogDistancePropagationLossModel");
  wifiPhy.SetChannel (wifiChannel.Create ());

  // 5. Install wireless devices

  NqosWifiMacHelper wifiMac = NqosWifiMacHelper::Default ();
  wifiMac.SetType ("ns3::AdhocWifiMac"); // use ad-hoc MAC
  //NetDeviceContainer devices = wifi_helper.Install (wifiPhy, wifiMac, c);
  wifi_helper.SetStandard (WIFI_PHY_STANDARD_80211b);
  wifi_helper.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
                                "DataMode",StringValue (phyMode),
                                "ControlMode",StringValue (phyMode));

  NetDeviceContainer devices;

  Ptr<YansWifiChannel> p_yans_wifi_channel = wifiChannel.Create();

  for (unsigned j = 0; j < 3; j++) {
    Ptr<Node> node =  c.Get(j);
    Ptr<WifiNetDevice> device = CreateObject<WifiNetDevice>();

    ObjectFactory nqos_wifi_mac_factory = ObjectFactory();
    nqos_wifi_mac_factory.SetTypeId("ns3::AdhocWifiMac");
    nqos_wifi_mac_factory.Set("QosSupported", BooleanValue(false));
    Ptr<WifiMac> p_wifi_mac = nqos_wifi_mac_factory.Create<WifiMac>();
    p_wifi_mac->ConfigureStandard(WIFI_PHY_STANDARD_80211b);

    ObjectFactory error_rate_model_factory = ObjectFactory();
    error_rate_model_factory.SetTypeId("ns3::NistErrorRateModel");
    Ptr<ErrorRateModel> p_error_rate_model = error_rate_model_factory.Create<ErrorRateModel>();

    ObjectFactory yans_wifi_phy_factory = ObjectFactory();
    yans_wifi_phy_factory.SetTypeId("ns3::YansWifiPhy");
    yans_wifi_phy_factory.Set ("RxGain", DoubleValue (0) );
    yans_wifi_phy_factory.Set ("CcaMode1Threshold", DoubleValue (0.0) );
#if 0
    yans_wifi_phy_factory.Set ("EnergyDetectionThreshold", DoubleValue (0.0) );
#endif
    yans_wifi_phy_factory.Set ("TxGain", DoubleValue (offset + Prss) );
    Ptr<YansWifiPhy> p_yans_wifi_phy = yans_wifi_phy_factory.Create<YansWifiPhy>();
    p_yans_wifi_phy->SetErrorRateModel(p_error_rate_model);
    p_yans_wifi_phy->SetChannel(p_yans_wifi_channel);
    p_yans_wifi_phy->SetMobility(node);
    p_yans_wifi_phy->SetDevice(device);
    p_yans_wifi_phy->ConfigureStandard(WIFI_PHY_STANDARD_80211b);
    p_yans_wifi_phy->SetReceiveOkCallback(MakeCallback (&myRxOkCallback));
    p_yans_wifi_phy->SetReceiveErrorCallback(MakeCallback (&myRxErrorCallback));

    ObjectFactory station_manager = ObjectFactory();
    station_manager.SetTypeId("ns3::ConstantRateWifiManager");
    station_manager.Set("DataMode", StringValue(phyMode));
    station_manager.Set("ControlMode", StringValue(phyMode));
    Ptr<WifiRemoteStationManager> manager = station_manager.Create<WifiRemoteStationManager>();

    device->SetMac(p_wifi_mac);
    device->SetPhy(p_yans_wifi_phy);
    device->SetRemoteStationManager(manager);

    node->AddDevice(device);
    devices.Add(device);
  }

  // Note that with FixedRssLossModel, the positions below are not
  // used for received signal strength.
  MobilityHelper mobility;
  Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
  positionAlloc->Add (Vector (0.0, 0.0, 0.0));
  positionAlloc->Add (Vector (1.0, 0.0, 0.0));
  positionAlloc->Add (Vector (2.0, 0.0, 0.0));
  positionAlloc->Add (Vector (3.0, 0.0, 0.0));
  mobility.SetPositionAllocator (positionAlloc);
  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
  mobility.Install (c);

  InternetStackHelper internet;
  internet.Install (c);

  Ipv4AddressHelper ipv4;
  NS_LOG_INFO ("Assign IP Addresses.");
  ipv4.SetBase ("10.1.1.0", "255.255.255.0");
  Ipv4InterfaceContainer i = ipv4.Assign (devices);

  TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
  Ptr<Socket> recvSink = Socket::CreateSocket (c.Get (1), tid);
  InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 80);
  recvSink->Bind (local);
  recvSink->SetRecvCallback (MakeCallback (&ReceivePacket));

  Ptr<Socket> source = Socket::CreateSocket (c.Get (0), tid);
  InetSocketAddress remote = InetSocketAddress (Ipv4Address ("255.255.255.255"), 80);
  source->SetAllowBroadcast (true);
  source->Connect (remote);

  Ptr<Socket> source3 = Socket::CreateSocket (c.Get (2), tid);
  InetSocketAddress remote3 = InetSocketAddress (Ipv4Address ("255.255.255.255"), 80);
  source3->SetAllowBroadcast (true);
  source3->Connect (remote3);


  // Tracing
  wifiPhy.EnablePcap ("collision-sample", devices);

  // Output what we are doing
  NS_LOG_UNCOND ("Testing " << numPackets  << " packets sent with receiver rss " << rss );
  Simulator::ScheduleWithContext (source->GetNode ()->GetId (),
                                  Seconds (2.1), &GenerateTraffic,
                                  source, packetSize, numPackets, interPacketInterval);

  Simulator::ScheduleWithContext (source->GetNode ()->GetId (),
                                  Seconds (2.1), &GenerateTraffic,
                                  source, packetSize, numPackets3, interPacketInterval);

 #if 0
  Simulator::ScheduleWithContext (source3->GetNode ()->GetId (),
                                  Seconds (3), &GenerateTraffic,
                                  source3, packetSize, numPackets3, interPacketInterval);
  Simulator::ScheduleWithContext (source3->GetNode ()->GetId (),
                                  Seconds (2.2), &GenerateTraffic,
                                  source3, packetSize, numPackets3, interPacketInterval);
#endif

  Simulator::Run ();
  Simulator::Destroy ();

  return 0;
}