/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */ /* * Copyright (c) 2017 * * 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 */ #include "ns3/core-module.h" #include "ns3/applications-module.h" #include "ns3/wifi-module.h" #include "ns3/mobility-module.h" #include "ns3/internet-module.h" // This is an example to show how to configure an IEEE 802.11 Wi-Fi // network where the AP and the station use different 802.11 standards. // // It outputs the throughput for a given configuration: user can specify // the 802.11 versions for the AT and the station as well as their rate // adaptation algorithms. It also allows to decide whether the station, // the AP or both has/have traffic to send. // // Example for an IEEE 802.11ac station sending traffic to an 802.11a AP using Ideal rate adaptation algorithm: // ./waf --run "wifi-backward-compatibility --apVersion=80211a --staVersion=80211ac --staRaa=Ideal" using namespace ns3; NS_LOG_COMPONENT_DEFINE ("wifi-backward-compatibility"); WifiPhyStandard ConvertStringToStandard (std::string version) { WifiPhyStandard standard; if (version == "80211a") { standard = WIFI_PHY_STANDARD_80211a; } else if (version == "80211b") { standard = WIFI_PHY_STANDARD_80211b; } else if (version == "80211g") { standard = WIFI_PHY_STANDARD_80211g; } else if (version == "80211_10MHZ") { standard = WIFI_PHY_STANDARD_80211_10MHZ; } else if (version == "80211_5MHZ") { standard = WIFI_PHY_STANDARD_80211_5MHZ; } else if (version == "holland") { standard = WIFI_PHY_STANDARD_holland; } else if (version == "80211n_2_4GHZ") { standard = WIFI_PHY_STANDARD_80211n_2_4GHZ; } else if (version == "80211n_5GHZ") { standard = WIFI_PHY_STANDARD_80211n_5GHZ; } else if (version == "80211ac") { standard = WIFI_PHY_STANDARD_80211ac; } else { standard = WIFI_PHY_STANDARD_UNSPECIFIED; } return standard; } int main (int argc, char *argv[]) { uint32_t payloadSize = 1472; //bytes double simulationTime = 10; //seconds std::string apVersion = "80211a"; std::string staVersion = "80211n_5GHZ"; std::string apRaa = "Minstrel"; std::string staRaa = "MinstrelHt"; bool apHasTraffic = false; bool staHasTraffic = true; CommandLine cmd; cmd.AddValue ("simulationTime", "Simulation time in seconds", simulationTime); cmd.AddValue ("apVersion", "The standard version used by the AP: 80211a, 80211b, 80211g, 80211_10MHZ, 80211_5MHZ, holland, 80211n_2_4GHZ, 80211n_5GHZ or 80211ac", apVersion); cmd.AddValue ("staVersion", "The standard version used by the station: 80211a, 80211b, 80211g, 80211_10MHZ, 80211_5MHZ, holland, 80211n_2_4GHZ, 80211n_5GHZ or 80211ac", staVersion); cmd.AddValue ("apRaa", "Rate adaptation algorithm used by the AP", apRaa); cmd.AddValue ("staRaa", "Rate adaptation algorithm used by the station", staRaa); cmd.AddValue ("apHasTraffic", "Enable/disable traffic on the AP", apHasTraffic); cmd.AddValue ("staHasTraffic", "Enable/disable traffic on the station", staHasTraffic); cmd.Parse (argc,argv); NodeContainer wifiStaNode; wifiStaNode.Create (1); NodeContainer wifiApNode; wifiApNode.Create (1); YansWifiChannelHelper channel = YansWifiChannelHelper::Default (); YansWifiPhyHelper phy = YansWifiPhyHelper::Default (); phy.SetChannel (channel.Create ()); WifiMacHelper mac; WifiHelper wifi; Ssid ssid = Ssid ("ns3"); wifi.SetStandard (ConvertStringToStandard (staVersion)); wifi.SetRemoteStationManager ("ns3::" + staRaa + "WifiManager"); mac.SetType ("ns3::StaWifiMac", "Ssid", SsidValue (ssid)); NetDeviceContainer staDevice; staDevice = wifi.Install (phy, mac, wifiStaNode); wifi.SetStandard (ConvertStringToStandard (apVersion)); wifi.SetRemoteStationManager ("ns3::" + apRaa + "WifiManager"); mac.SetType ("ns3::ApWifiMac", "Ssid", SsidValue (ssid)); NetDeviceContainer apDevice; apDevice = wifi.Install (phy, mac, wifiApNode); //Workaround needed as long as we do not fully support channel bonding if (staVersion == "80211ac") { Config::Set ("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", UintegerValue (20)); Config::Set ("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/Phy/Frequency", UintegerValue (5180)); } if (apVersion == "80211ac") { Config::Set ("/NodeList/1/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", UintegerValue (20)); Config::Set ("/NodeList/1/DeviceList/*/$ns3::WifiNetDevice/Phy/Frequency", UintegerValue (5180)); } MobilityHelper mobility; Ptr positionAlloc = CreateObject (); positionAlloc->Add (Vector (0.0, 0.0, 0.0)); positionAlloc->Add (Vector (5.0, 0.0, 0.0)); mobility.SetPositionAllocator (positionAlloc); mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel"); mobility.Install (wifiApNode); mobility.Install (wifiStaNode); 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); UdpServerHelper apServer (9); ApplicationContainer apServerApp = apServer.Install (wifiApNode.Get (0)); apServerApp.Start (Seconds (0.0)); apServerApp.Stop (Seconds (simulationTime + 1)); UdpServerHelper staServer (5001); ApplicationContainer staServerApp = staServer.Install (wifiStaNode.Get (0)); staServerApp.Start (Seconds (0.0)); staServerApp.Stop (Seconds (simulationTime + 1)); if (apHasTraffic) { UdpClientHelper apClient (staNodeInterface.GetAddress (0), 5001); apClient.SetAttribute ("MaxPackets", UintegerValue (4294967295u)); apClient.SetAttribute ("Interval", TimeValue (Time ("0.00001"))); //packets/s apClient.SetAttribute ("PacketSize", UintegerValue (payloadSize)); //bytes ApplicationContainer apClientApp = apClient.Install (wifiApNode.Get (0)); apClientApp.Start (Seconds (1.0)); apClientApp.Stop (Seconds (simulationTime + 1)); } if (staHasTraffic) { UdpClientHelper staClient (apNodeInterface.GetAddress (0), 9); staClient.SetAttribute ("MaxPackets", UintegerValue (4294967295u)); staClient.SetAttribute ("Interval", TimeValue (Time ("0.00001"))); //packets/s staClient.SetAttribute ("PacketSize", UintegerValue (payloadSize)); //bytes ApplicationContainer staClientApp = staClient.Install (wifiStaNode.Get (0)); staClientApp.Start (Seconds (1.0)); staClientApp.Stop (Seconds (simulationTime + 1)); } Ipv4GlobalRoutingHelper::PopulateRoutingTables (); Simulator::Stop (Seconds (simulationTime + 1)); Simulator::Run (); Simulator::Destroy (); uint64_t rxBytes; double throughput; if (apHasTraffic) { rxBytes = payloadSize * DynamicCast (staServerApp.Get (0))->GetReceived (); throughput = (rxBytes * 8) / (simulationTime * 1000000.0); //Mbit/s std::cout << "AP Throughput: " << throughput << " Mbit/s" << std::endl; if (throughput == 0) { NS_LOG_ERROR ("No traffic received!"); exit (1); } } if (staHasTraffic) { rxBytes = payloadSize * DynamicCast (apServerApp.Get (0))->GetReceived (); throughput = (rxBytes * 8) / (simulationTime * 1000000.0); //Mbit/s std::cout << "STA Throughput: " << throughput << " Mbit/s" << std::endl; if (throughput == 0) { NS_LOG_ERROR ("No traffic received!"); exit (1); } } return 0; }