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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2009 MIRKO BANCHI
*
* 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
*
* Authors: Mirko Banchi <mk.banchi@gmail.com>
* Sebastien Deronne <sebastien.deronne@gmail.com>
*/
#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 802.11n Wi-Fi network.
//
// It ouputs the UDP or TCP goodput for every VHT bitrate value, which depends on the MCS value (0 to 7), the
// channel width (20 or 40 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 ("ht-wifi-network");
int main (int argc, char *argv[])
{
bool udp = true;
double simulationTime = 10; //seconds
double distance = 1.0; //meters
double frequency = 5.0; //whether 2.4 or 5.0 GHz
CommandLine cmd;
cmd.AddValue ("frequency", "Whether working in the 2.4 or 5.0 GHz band (other values gets rejected)", frequency);
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.Parse (argc,argv);
std::cout << "MCS value" << "\t\t" << "Channel width" << "\t\t" << "short GI" << "\t\t" << "Throughput" << '\n';
for (int i = 0; i <= 7; i++) //MCS
{
for (int j = 20; j <= 40; ) //channel width
{
for (int k = 0; k < 2; k++) //GI: 0 and 1
{
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));
WifiMacHelper mac;
WifiHelper wifi;
if (frequency == 5.0)
{
wifi.SetStandard (WIFI_PHY_STANDARD_80211n_5GHZ);
}
else if (frequency == 2.4)
{
wifi.SetStandard (WIFI_PHY_STANDARD_80211n_2_4GHZ);
Config::SetDefault ("ns3::LogDistancePropagationLossModel::ReferenceLoss", DoubleValue (40.046));
}
else
{
std::cout<<"Wrong frequency value!"<<std::endl;
return 0;
}
std::ostringstream oss;
oss << "HtMcs" << i;
wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager","DataMode", StringValue (oss.str ()),
"ControlMode", StringValue (oss.str ()));
Ssid ssid = Ssid ("ns3-80211n");
mac.SetType ("ns3::StaWifiMac",
"Ssid", SsidValue (ssid));
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));
}
Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
Simulator::Stop (Seconds (simulationTime + 1));
Simulator::Run ();
Simulator::Destroy ();
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;
}
j *= 2;
}
}
return 0;
}
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