NS3 IEEE802.11AC simulator

vht.cc

/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2015 SEBASTIEN DERONNE
 *
 * 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: Sebastien Deronne <[email protected]>
 */

#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/applications-module.h"
#include "ns3/wifi-module.h"
#include "ns3/mobility-module.h"
#include "ns3/ipv4-global-routing-helper.h"
#include "ns3/internet-module.h"

// This is a simple example in order to show how to configure an IEEE 802.11ac Wi-Fi network.
//
// It ouputs the UDP or TCP goodput for every VHT bitrate value, which depends on the MCS value (0 to 9, where 9 is
// forbidden when the channel width is 20 MHz), the channel width (20, 40, 80 or 160 MHz) and the guard interval (long
// or short). The PHY bitrate is constant over all the simulation run. The user can also specify the distance between
// the access point and the station: the larger the distance the smaller the goodput.
//
// The simulation assumes a single station in an infrastructure network:
//
//  STA     AP
//    *     *
//    |     |
//   n1     n2
//
//Packets in this simulation aren't marked with a QosTag so they are considered
//belonging to BestEffort Access Class (AC_BE).

using namespace ns3;

NS_LOG_COMPONENT_DEFINE ("vht");

int main (int argc, char *argv[])
{
  bool udp = true;
  double simulationTime = 1.2; //seconds
  double distance = 1.0; //meters
  bool pcap=false;
  bool measure=false;
  int STmcs=0;
  int i;
  int j=40;
  int k=0;
  int chwidth=40;
  CommandLine cmd;
  cmd.AddValue ("distance", "Distance in meters between the station and the access point", distance);
  cmd.AddValue ("simulationTime", "Simulation time in seconds", simulationTime);
  cmd.AddValue ("udp", "UDP if set to 1, TCP otherwise", udp);
  cmd.AddValue ("pcap", "Active PCAP", pcap);
  cmd.AddValue ("STmcs", "STmcs ", STmcs);
  cmd.AddValue ("chwidth", "Channel Width ", chwidth);
  cmd.AddValue ("measure", "Display measure column ", measure);
  cmd.Parse (argc,argv);
  j=chwidth;
  if(measure){
   std::cout << "MCS value" << "\t\t" << "Channel width" << "\t\t" << "short GI" << "\t\t" << "Throughput" << '\n';
  }
  i=STmcs;
  uint32_t payloadSize; //1500 byte IP packet
  if (udp)
    {
      payloadSize = 1472; //bytes
    }
  else
    {
      payloadSize = 1448; //bytes
      Config::SetDefault ("ns3::TcpSocket::SegmentSize", UintegerValue (payloadSize));
    }

  NodeContainer wifiStaNode;
  wifiStaNode.Create (1);
  NodeContainer wifiApNode;
  wifiApNode.Create (1);

  YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
  YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
  phy.SetChannel (channel.Create ());

  // Set guard interval
  phy.Set ("ShortGuardEnabled", BooleanValue (k));

  WifiHelper wifi;
  wifi.SetStandard (WIFI_PHY_STANDARD_80211ac);
  WifiMacHelper mac;

  std::ostringstream oss;
  oss << "VhtMcs" << i;
  wifi.SetRemoteStationManager ("ns3::MinstrelHtWifiManager");

  Ssid ssid = Ssid ("ns3-80211ac");

  mac.SetType ("ns3::StaWifiMac",
               "Ssid", SsidValue (ssid),
               "ActiveProbing", BooleanValue (false));

  NetDeviceContainer staDevice;
  staDevice = wifi.Install (phy, mac, wifiStaNode);

  mac.SetType ("ns3::ApWifiMac",
               "Ssid", SsidValue (ssid));

  NetDeviceContainer apDevice;
  apDevice = wifi.Install (phy, mac, wifiApNode);

  // Set channel width
  Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", UintegerValue (j));

  // mobility.
  MobilityHelper mobility;
  Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();

  positionAlloc->Add (Vector (0.0, 0.0, 0.0));
  positionAlloc->Add (Vector (distance, 0.0, 0.0));
  mobility.SetPositionAllocator (positionAlloc);

  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");

  mobility.Install (wifiApNode);
  mobility.Install (wifiStaNode);

  /* Internet stack*/
  InternetStackHelper stack;
  stack.Install (wifiApNode);
  stack.Install (wifiStaNode);

  Ipv4AddressHelper address;

  address.SetBase ("192.168.1.0", "255.255.255.0");
  Ipv4InterfaceContainer staNodeInterface;
  Ipv4InterfaceContainer apNodeInterface;

  staNodeInterface = address.Assign (staDevice);
  apNodeInterface = address.Assign (apDevice);

  /* Setting applications */
  ApplicationContainer serverApp, sinkApp;
  if (udp)
    {
      //UDP flow
      UdpServerHelper myServer (9);
      serverApp = myServer.Install (wifiStaNode.Get (0));
      serverApp.Start (Seconds (0.0));
      serverApp.Stop (Seconds (simulationTime + 1));

      UdpClientHelper myClient (staNodeInterface.GetAddress (0), 9);
      myClient.SetAttribute ("MaxPackets", UintegerValue (4294967295u));
      myClient.SetAttribute ("Interval", TimeValue (Time ("0.00001"))); //packets/s
      myClient.SetAttribute ("PacketSize", UintegerValue (payloadSize));

      ApplicationContainer clientApp = myClient.Install (wifiApNode.Get (0));
      clientApp.Start (Seconds (1.0));
      clientApp.Stop (Seconds (simulationTime + 1));
    }
  else
    {
      //TCP flow
      uint16_t port = 50000;
      Address apLocalAddress (InetSocketAddress (Ipv4Address::GetAny (), port));
      PacketSinkHelper packetSinkHelper ("ns3::TcpSocketFactory", apLocalAddress);
      sinkApp = packetSinkHelper.Install (wifiStaNode.Get (0));

      sinkApp.Start (Seconds (0.0));
      sinkApp.Stop (Seconds (simulationTime + 1));

      OnOffHelper onoff ("ns3::TcpSocketFactory",Ipv4Address::GetAny ());
      onoff.SetAttribute ("OnTime",  StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
      onoff.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
      onoff.SetAttribute ("PacketSize", UintegerValue (payloadSize));
      onoff.SetAttribute ("DataRate", DataRateValue (1000000000)); //bit/s
      ApplicationContainer apps;

      AddressValue remoteAddress (InetSocketAddress (staNodeInterface.GetAddress (0), port));
      onoff.SetAttribute ("Remote", remoteAddress);
      apps.Add (onoff.Install (wifiApNode.Get (0)));
      apps.Start (Seconds (1.0));
      apps.Stop (Seconds (simulationTime + 1));
    }
  if (pcap)
    {
   phy.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO);
   phy.EnablePcap ("vht", wifiStaNode);
    }

  Ipv4GlobalRoutingHelper::PopulateRoutingTables ();

  Simulator::Stop (Seconds (simulationTime + 1));
  Simulator::Run ();
  Simulator::Destroy ();

  if(measure) {
   double throughput = 0;
   if (udp)
    {
      //UDP
      uint32_t totalPacketsThrough = DynamicCast<UdpServer> (serverApp.Get (0))->GetReceived ();
      throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0); //Mbit/s
     }
    else
     {
      //TCP
      uint32_t totalPacketsThrough = DynamicCast<PacketSink> (sinkApp.Get (0))->GetTotalRx ();
      throughput = totalPacketsThrough * 8 / (simulationTime * 1000000.0); //Mbit/s
     }
    std::cout << i << "\t\t\t" << j << " MHz\t\t\t" << k << "\t\t\t" << throughput << " Mbit/s" << std::endl;
   }else{
    std::cout << "MCS : "<<i <<", BW : " << j <<std::endl;
   }
  return 0;
}