181 lines
7.0 KiB
C++
181 lines
7.0 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2015
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Sebastien Deronne <sebastien.deronne@gmail.com>
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*/
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#include "ns3/command-line.h"
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#include "ns3/config.h"
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#include "ns3/uinteger.h"
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#include "ns3/double.h"
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#include "ns3/string.h"
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#include "ns3/log.h"
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#include "ns3/yans-wifi-helper.h"
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#include "ns3/ssid.h"
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#include "ns3/mobility-helper.h"
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#include "ns3/ipv4-address-helper.h"
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#include "ns3/yans-wifi-channel.h"
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#include "ns3/mobility-model.h"
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#include "ns3/internet-stack-helper.h"
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#include "ns3/udp-client-server-helper.h"
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#include "ns3/ipv4-global-routing-helper.h"
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// This example shows how to set Wi-Fi timing parameters through WifiMac attributes.
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//
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// Example: set slot time to 20 microseconds, while keeping other values as defined in the simulation script:
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//
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// ./waf --run "wifi-timing-attributes --slot=20"
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//
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// Network topology:
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//
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// Wifi 192.168.1.0
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//
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// AP
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// * *
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// | |
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// n1 n2
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE ("wifi-timing-attributes");
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int main (int argc, char *argv[])
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{
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uint32_t slot = 9; //slot time in microseconds
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uint32_t sifs = 10; //SIFS duration in microseconds
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uint32_t ackTimeout = 88; //ACK timeout duration in microseconds
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uint32_t ctsTimeout = 88; //CTS timeout duration in microseconds
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uint32_t rifs = 2; //RIFS duration in microseconds
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uint32_t basicBlockAckTimeout = 286; //Basic Block ACK timeout duration in microseconds
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uint32_t compressedBlockAckTimeout = 112; //Compressed Block ACK timeout duration in microseconds
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double simulationTime = 10; //simulation time in seconds
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CommandLine cmd;
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cmd.AddValue ("slot", "Slot time in microseconds", slot);
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cmd.AddValue ("sifs", "SIFS duration in microseconds", sifs);
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cmd.AddValue ("ackTimeout", "ACK timeout duration in microseconds", ackTimeout);
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cmd.AddValue ("ctsTimeout", "CTS timeout duration in microseconds", ctsTimeout);
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cmd.AddValue ("rifs", "RIFS duration in microseconds", rifs);
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cmd.AddValue ("basicBlockAckTimeoutTimeout", "Basic Block ACK timeout duration in microseconds", basicBlockAckTimeout);
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cmd.AddValue ("compressedBlockAckTimeoutTimeout", "Compressed Block ACK timeout duration in microseconds", compressedBlockAckTimeout);
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cmd.AddValue ("simulationTime", "Simulation time in seconds", simulationTime);
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cmd.Parse (argc,argv);
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//Since default reference loss is defined for 5 GHz, it needs to be changed when operating at 2.4 GHz
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Config::SetDefault ("ns3::LogDistancePropagationLossModel::ReferenceLoss", DoubleValue (40.046));
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//Create nodes
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NodeContainer wifiStaNode;
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wifiStaNode.Create (1);
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NodeContainer wifiApNode;
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wifiApNode.Create (1);
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//Create wireless channel
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YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
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YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
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phy.SetChannel (channel.Create ());
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//Default IEEE 802.11n (2.4 GHz)
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WifiHelper wifi;
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wifi.SetStandard (WIFI_PHY_STANDARD_80211n_2_4GHZ);
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wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
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"DataMode", StringValue ("HtMcs7"),
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"ControlMode", StringValue ("HtMcs0"));
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WifiMacHelper mac;
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//Install PHY and MAC
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Ssid ssid = Ssid ("ns3-wifi");
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mac.SetType ("ns3::StaWifiMac",
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"Ssid", SsidValue (ssid));
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NetDeviceContainer staDevice;
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staDevice = wifi.Install (phy, mac, wifiStaNode);
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mac.SetType ("ns3::ApWifiMac",
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"Ssid", SsidValue (ssid));
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NetDeviceContainer apDevice;
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apDevice = wifi.Install (phy, mac, wifiApNode);
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//Once install is done, we overwrite the standard timing values
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/Slot", TimeValue (MicroSeconds (slot)));
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/Sifs", TimeValue (MicroSeconds (sifs)));
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/AckTimeout", TimeValue (MicroSeconds (ackTimeout)));
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/CtsTimeout", TimeValue (MicroSeconds (ctsTimeout)));
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/Rifs", TimeValue (MicroSeconds (rifs)));
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/BasicBlockAckTimeout", TimeValue (MicroSeconds (basicBlockAckTimeout)));
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Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Mac/CompressedBlockAckTimeout", TimeValue (MicroSeconds (compressedBlockAckTimeout)));
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//Mobility
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MobilityHelper mobility;
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Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
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positionAlloc->Add (Vector (0.0, 0.0, 0.0));
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positionAlloc->Add (Vector (1.0, 0.0, 0.0));
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mobility.SetPositionAllocator (positionAlloc);
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mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
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mobility.Install (wifiApNode);
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mobility.Install (wifiStaNode);
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//Internet stack
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InternetStackHelper stack;
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stack.Install (wifiApNode);
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stack.Install (wifiStaNode);
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Ipv4AddressHelper address;
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address.SetBase ("192.168.1.0", "255.255.255.0");
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Ipv4InterfaceContainer staNodeInterface;
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Ipv4InterfaceContainer apNodeInterface;
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staNodeInterface = address.Assign (staDevice);
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apNodeInterface = address.Assign (apDevice);
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//Setting applications
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uint16_t port = 9;
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UdpServerHelper server (port);
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ApplicationContainer serverApp = server.Install (wifiStaNode.Get (0));
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serverApp.Start (Seconds (0.0));
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serverApp.Stop (Seconds (simulationTime + 1));
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UdpClientHelper client (staNodeInterface.GetAddress (0), port);
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client.SetAttribute ("MaxPackets", UintegerValue (4294967295u));
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client.SetAttribute ("Interval", TimeValue (Time ("0.00002"))); //packets/s
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client.SetAttribute ("PacketSize", UintegerValue (1472)); //bytes
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ApplicationContainer clientApp = client.Install (wifiApNode.Get (0));
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clientApp.Start (Seconds (1.0));
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clientApp.Stop (Seconds (simulationTime + 1));
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//Populate routing table
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Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
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//Set simulation time and launch simulation
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Simulator::Stop (Seconds (simulationTime + 1));
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Simulator::Run ();
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//Get and print results
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uint64_t totalPacketsThrough = DynamicCast<UdpServer> (serverApp.Get (0))->GetReceived ();
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double throughput = totalPacketsThrough * 1472 * 8 / (simulationTime * 1000000.0); //Mbit/s
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std::cout << "Throughput: " << throughput << " Mbit/s" << std::endl;
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Simulator::Destroy ();
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return 0;
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}
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