624 lines
21 KiB
C++
624 lines
21 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2009 MIRKO BANCHI
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* Copyright (c) 2015 University of Washington
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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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* Authors: Mirko Banchi <mk.banchi@gmail.com>
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* Sebastien Deronne <sebastien.deronne@gmail.com>
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* Tom Henderson <tomhend@u.washington.edu>
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*
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* Adapted from ht-wifi-network.cc example
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*/
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#include <iomanip>
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#include "ns3/core-module.h"
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#include "ns3/applications-module.h"
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#include "ns3/wifi-module.h"
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#include "ns3/mobility-module.h"
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#include "ns3/spectrum-module.h"
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#include "ns3/internet-module.h"
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// This is a simple example of an IEEE 802.11n Wi-Fi network with a
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// non-Wi-Fi interferer. It is an adaptation of the wifi-spectrum-per-example
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//
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// Unless the --waveformPower argument is passed, it will behave like
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// wifi-spectrum-per-example. Adding --waveformPower=value for values
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// greater than 0.0001 will result in frame losses beyond those that
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// result from the normal SNR based on distance path loss.
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//
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// If YansWifiPhy is selected as the wifiType, --waveformPower will have
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// no effect.
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//
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// Network topology:
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//
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// Wi-Fi 192.168.1.0
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//
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// STA AP
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// * <-- distance --> *
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// | |
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// n1 n2
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//
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// Users may vary the following command-line arguments in addition to the
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// attributes, global values, and default values typically available:
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//
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// --simulationTime: Simulation time in seconds [10]
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// --udp: UDP if set to 1, TCP otherwise [true]
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// --distance: meters separation between nodes [50]
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// --index: restrict index to single value between 0 and 31 [256]
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// --wifiType: select ns3::SpectrumWifiPhy or ns3::YansWifiPhy [ns3::SpectrumWifiPhy]
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// --errorModelType: select ns3::NistErrorRateModel or ns3::YansErrorRateModel [ns3::NistErrorRateModel]
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// --enablePcap: enable pcap output [false]
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// --waveformPower: Waveform power [0]
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//
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// By default, the program will step through 32 index values, corresponding
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// to the following MCS, channel width, and guard interval combinations:
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// index 0-7: MCS 0-7, long guard interval, 20 MHz channel
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// index 8-15: MCS 0-7, short guard interval, 20 MHz channel
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// index 16-23: MCS 0-7, long guard interval, 40 MHz channel
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// index 24-31: MCS 0-7, short guard interval, 40 MHz channel
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// and send 1000 UDP packets using each MCS, using the SpectrumWifiPhy and the
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// NistErrorRateModel, at a distance of 50 meters. The program outputs
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// results such as:
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//
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// wifiType: ns3::SpectrumWifiPhy distance: 50m; sent: 1000
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// index MCS Rate (Mb/s) Tput (Mb/s) Received Signal (dBm) Noise (dBm) SNR (dB)
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// 0 0 6.5 0.7776 1000 -77.6633 -100.966 23.3027
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// 1 1 13 0.7776 1000 -77.6633 -100.966 23.3027
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// 2 2 19.5 0.7776 1000 -77.6633 -100.966 23.3027
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// 3 3 26 0.7776 1000 -77.6633 -100.966 23.3027
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// ...
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//
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// When UDP is used, the throughput will always be 0.7776 Mb/s since the
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// traffic generator does not attempt to match the maximum Phy data rate
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// but instead sends at a constant rate. When TCP is used, the TCP flow
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// will exhibit different throughput depending on the index.
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using namespace ns3;
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// Global variables for use in callbacks.
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double g_signalDbmAvg;
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double g_noiseDbmAvg;
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uint32_t g_samples;
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uint16_t g_channelNumber;
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void MonitorSniffRx (Ptr<const Packet> packet, uint16_t channelFreqMhz,
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uint16_t channelNumber, WifiTxVector txVector,
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MpduInfo aMpdu, SignalNoiseDbm signalNoise)
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{
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g_samples++;
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g_signalDbmAvg += ((signalNoise.signal - g_signalDbmAvg) / g_samples);
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g_noiseDbmAvg += ((signalNoise.noise - g_noiseDbmAvg) / g_samples);
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g_channelNumber = channelNumber;
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}
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NS_LOG_COMPONENT_DEFINE ("WifiSpectrumPerInterference");
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Ptr<SpectrumModel> SpectrumModelWifi5180MHz;
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class static_SpectrumModelWifi5180MHz_initializer
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{
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public:
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static_SpectrumModelWifi5180MHz_initializer ()
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{
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BandInfo bandInfo;
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bandInfo.fc = 5180e6;
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bandInfo.fl = 5180e6 - 10e6;
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bandInfo.fh = 5180e6 + 10e6;
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Bands bands;
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bands.push_back (bandInfo);
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SpectrumModelWifi5180MHz = Create<SpectrumModel> (bands);
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}
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} static_SpectrumModelWifi5180MHz_initializer_instance;
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int main (int argc, char *argv[])
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{
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bool udp = true;
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double distance = 50;
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double simulationTime = 10; //seconds
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uint16_t index = 256;
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std::string wifiType = "ns3::SpectrumWifiPhy";
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std::string errorModelType = "ns3::NistErrorRateModel";
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bool enablePcap = false;
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const uint32_t tcpPacketSize = 1448;
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double waveformPower = 0;
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CommandLine cmd;
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cmd.AddValue ("simulationTime", "Simulation time in seconds", simulationTime);
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cmd.AddValue ("udp", "UDP if set to 1, TCP otherwise", udp);
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cmd.AddValue ("distance", "meters separation between nodes", distance);
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cmd.AddValue ("index", "restrict index to single value between 0 and 31", index);
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cmd.AddValue ("wifiType", "select ns3::SpectrumWifiPhy or ns3::YansWifiPhy", wifiType);
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cmd.AddValue ("errorModelType", "select ns3::NistErrorRateModel or ns3::YansErrorRateModel", errorModelType);
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cmd.AddValue ("enablePcap", "enable pcap output", enablePcap);
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cmd.AddValue ("waveformPower", "Waveform power", waveformPower);
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cmd.Parse (argc,argv);
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uint16_t startIndex = 0;
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uint16_t stopIndex = 31;
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if (index < 32)
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{
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startIndex = index;
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stopIndex = index;
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}
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std::cout << "wifiType: " << wifiType << " distance: " << distance << "m; sent: 1000 TxPower: 16 dBm (40 mW)" << std::endl;
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std::cout << std::setw (5) << "index" <<
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std::setw (6) << "MCS" <<
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std::setw (12) << "Rate (Mb/s)" <<
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std::setw (12) << "Tput (Mb/s)" <<
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std::setw (10) << "Received " <<
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std::setw (12) << "Signal (dBm)" <<
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std::setw (12) << "Noi+Inf(dBm)" <<
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std::setw (10) << "SNR (dB)" <<
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std::endl;
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for (uint16_t i = startIndex; i <= stopIndex; i++)
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{
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uint32_t payloadSize;
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if (udp)
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{
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payloadSize = 972; // 1000 bytes IPv4
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}
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else
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{
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payloadSize = 1448; // 1500 bytes IPv6
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Config::SetDefault ("ns3::TcpSocket::SegmentSize", UintegerValue (payloadSize));
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}
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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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NodeContainer interferingNode;
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interferingNode.Create (1);
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YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
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SpectrumWifiPhyHelper spectrumPhy = SpectrumWifiPhyHelper::Default ();
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Ptr<MultiModelSpectrumChannel> spectrumChannel;
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if (wifiType == "ns3::YansWifiPhy")
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{
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YansWifiChannelHelper channel;
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channel.AddPropagationLoss ("ns3::FriisPropagationLossModel");
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channel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
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phy.SetChannel (channel.Create ());
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phy.Set ("Frequency", UintegerValue (5180));
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if (i <= 7)
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{
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phy.Set ("ShortGuardEnabled", BooleanValue (false));
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phy.Set ("ChannelWidth", UintegerValue (20));
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}
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else if (i > 7 && i <= 15)
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{
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phy.Set ("ShortGuardEnabled", BooleanValue (true));
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phy.Set ("ChannelWidth", UintegerValue (20));
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}
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else if (i > 15 && i <= 23)
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{
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phy.Set ("ShortGuardEnabled", BooleanValue (false));
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phy.Set ("ChannelWidth", UintegerValue (40));
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}
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else
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{
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phy.Set ("ShortGuardEnabled", BooleanValue (true));
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phy.Set ("ChannelWidth", UintegerValue (40));
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}
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}
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else if (wifiType == "ns3::SpectrumWifiPhy")
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{
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//Bug 2460: CcaMode1Threshold default should be set to -62 dBm when using Spectrum
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Config::SetDefault ("ns3::WifiPhy::CcaMode1Threshold", DoubleValue (-62.0));
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spectrumChannel
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= CreateObject<MultiModelSpectrumChannel> ();
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Ptr<FriisPropagationLossModel> lossModel
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= CreateObject<FriisPropagationLossModel> ();
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spectrumChannel->AddPropagationLossModel (lossModel);
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Ptr<ConstantSpeedPropagationDelayModel> delayModel
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= CreateObject<ConstantSpeedPropagationDelayModel> ();
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spectrumChannel->SetPropagationDelayModel (delayModel);
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spectrumPhy.SetChannel (spectrumChannel);
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spectrumPhy.SetErrorRateModel (errorModelType);
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spectrumPhy.Set ("Frequency", UintegerValue (5180)); // channel 36 at 20 MHz
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if (i <= 7)
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{
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spectrumPhy.Set ("ShortGuardEnabled", BooleanValue (false));
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spectrumPhy.Set ("ChannelWidth", UintegerValue (20));
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}
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else if (i > 7 && i <= 15)
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{
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spectrumPhy.Set ("ShortGuardEnabled", BooleanValue (true));
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spectrumPhy.Set ("ChannelWidth", UintegerValue (20));
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}
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else if (i > 15 && i <= 23)
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{
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spectrumPhy.Set ("ShortGuardEnabled", BooleanValue (false));
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spectrumPhy.Set ("ChannelWidth", UintegerValue (40));
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}
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else
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{
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spectrumPhy.Set ("ShortGuardEnabled", BooleanValue (true));
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spectrumPhy.Set ("ChannelWidth", UintegerValue (40));
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}
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}
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else
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{
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NS_FATAL_ERROR ("Unsupported WiFi type " << wifiType);
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}
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WifiHelper wifi;
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wifi.SetStandard (WIFI_PHY_STANDARD_80211n_5GHZ);
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WifiMacHelper mac;
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Ssid ssid = Ssid ("ns380211n");
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double datarate = 0;
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StringValue DataRate;
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if (i == 0)
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{
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DataRate = StringValue ("HtMcs0");
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datarate = 6.5;
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}
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else if (i == 1)
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{
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DataRate = StringValue ("HtMcs1");
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datarate = 13;
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}
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else if (i == 2)
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{
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DataRate = StringValue ("HtMcs2");
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datarate = 19.5;
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}
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else if (i == 3)
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{
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DataRate = StringValue ("HtMcs3");
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datarate = 26;
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}
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else if (i == 4)
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{
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DataRate = StringValue ("HtMcs4");
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datarate = 39;
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}
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else if (i == 5)
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{
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DataRate = StringValue ("HtMcs5");
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datarate = 52;
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}
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else if (i == 6)
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{
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DataRate = StringValue ("HtMcs6");
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datarate = 58.5;
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}
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else if (i == 7)
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{
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DataRate = StringValue ("HtMcs7");
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datarate = 65;
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}
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else if (i == 8)
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{
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DataRate = StringValue ("HtMcs0");
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datarate = 7.2;
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}
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else if (i == 9)
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{
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DataRate = StringValue ("HtMcs1");
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datarate = 14.4;
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}
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else if (i == 10)
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{
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DataRate = StringValue ("HtMcs2");
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datarate = 21.7;
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}
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else if (i == 11)
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{
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DataRate = StringValue ("HtMcs3");
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datarate = 28.9;
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}
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else if (i == 12)
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{
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DataRate = StringValue ("HtMcs4");
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datarate = 43.3;
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}
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else if (i == 13)
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{
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DataRate = StringValue ("HtMcs5");
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datarate = 57.8;
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}
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else if (i == 14)
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{
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DataRate = StringValue ("HtMcs6");
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datarate = 65;
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}
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else if (i == 15)
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{
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DataRate = StringValue ("HtMcs7");
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datarate = 72.2;
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}
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else if (i == 16)
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{
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DataRate = StringValue ("HtMcs0");
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datarate = 13.5;
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}
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else if (i == 17)
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{
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DataRate = StringValue ("HtMcs1");
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datarate = 27;
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}
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else if (i == 18)
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{
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DataRate = StringValue ("HtMcs2");
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datarate = 40.5;
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}
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else if (i == 19)
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{
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DataRate = StringValue ("HtMcs3");
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datarate = 54;
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}
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else if (i == 20)
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{
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DataRate = StringValue ("HtMcs4");
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datarate = 81;
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}
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else if (i == 21)
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{
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DataRate = StringValue ("HtMcs5");
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datarate = 108;
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}
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else if (i == 22)
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{
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DataRate = StringValue ("HtMcs6");
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datarate = 121.5;
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}
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else if (i == 23)
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{
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DataRate = StringValue ("HtMcs7");
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datarate = 135;
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}
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else if (i == 24)
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{
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DataRate = StringValue ("HtMcs0");
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datarate = 15;
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}
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else if (i == 25)
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{
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DataRate = StringValue ("HtMcs1");
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datarate = 30;
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}
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else if (i == 26)
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{
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DataRate = StringValue ("HtMcs2");
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datarate = 45;
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}
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else if (i == 27)
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{
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DataRate = StringValue ("HtMcs3");
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datarate = 60;
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}
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else if (i == 28)
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{
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DataRate = StringValue ("HtMcs4");
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datarate = 90;
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}
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else if (i == 29)
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{
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DataRate = StringValue ("HtMcs5");
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datarate = 120;
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}
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else if (i == 30)
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{
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DataRate = StringValue ("HtMcs6");
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datarate = 135;
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}
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else
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{
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DataRate = StringValue ("HtMcs7");
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datarate = 150;
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}
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wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager","DataMode", DataRate,
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"ControlMode", DataRate);
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NetDeviceContainer staDevice;
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NetDeviceContainer apDevice;
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if (wifiType == "ns3::YansWifiPhy")
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{
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mac.SetType ("ns3::StaWifiMac",
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"Ssid", SsidValue (ssid),
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"ActiveProbing", BooleanValue (false));
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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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apDevice = wifi.Install (phy, mac, wifiApNode);
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}
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else if (wifiType == "ns3::SpectrumWifiPhy")
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{
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mac.SetType ("ns3::StaWifiMac",
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"Ssid", SsidValue (ssid),
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"ActiveProbing", BooleanValue (false));
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staDevice = wifi.Install (spectrumPhy, mac, wifiStaNode);
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mac.SetType ("ns3::ApWifiMac",
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"Ssid", SsidValue (ssid));
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apDevice = wifi.Install (spectrumPhy, mac, wifiApNode);
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}
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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 (distance, 0.0, 0.0));
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positionAlloc->Add (Vector (distance, distance, 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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mobility.Install (interferingNode);
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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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ApplicationContainer serverApp, sinkApp;
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if (udp)
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{
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//UDP flow
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UdpServerHelper myServer (9);
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serverApp = myServer.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 myClient (staNodeInterface.GetAddress (0), 9);
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myClient.SetAttribute ("MaxPackets", UintegerValue (1000));
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myClient.SetAttribute ("Interval", TimeValue (MilliSeconds (5)));
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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));
|
|
}
|
|
// Configure waveform generator
|
|
|
|
Ptr<SpectrumValue> wgPsd = Create<SpectrumValue> (SpectrumModelWifi5180MHz);
|
|
*wgPsd = waveformPower / (100 * 180000);
|
|
NS_LOG_INFO ("wgPsd : " << *wgPsd << " integrated power: " << Integral (*(GetPointer (wgPsd))));
|
|
|
|
if (wifiType == "ns3::SpectrumWifiPhy")
|
|
{
|
|
WaveformGeneratorHelper waveformGeneratorHelper;
|
|
waveformGeneratorHelper.SetChannel (spectrumChannel);
|
|
waveformGeneratorHelper.SetTxPowerSpectralDensity (wgPsd);
|
|
|
|
waveformGeneratorHelper.SetPhyAttribute ("Period", TimeValue (Seconds (0.0007)));
|
|
waveformGeneratorHelper.SetPhyAttribute ("DutyCycle", DoubleValue (1));
|
|
NetDeviceContainer waveformGeneratorDevices = waveformGeneratorHelper.Install (interferingNode);
|
|
|
|
Simulator::Schedule (Seconds (0.002), &WaveformGenerator::Start,
|
|
waveformGeneratorDevices.Get (0)->GetObject<NonCommunicatingNetDevice> ()->GetPhy ()->GetObject<WaveformGenerator> ());
|
|
}
|
|
|
|
Config::ConnectWithoutContext ("/NodeList/0/DeviceList/*/Phy/MonitorSnifferRx", MakeCallback (&MonitorSniffRx));
|
|
|
|
if (enablePcap)
|
|
{
|
|
std::stringstream ss;
|
|
ss << "wifi-spectrum-per-example-" << i;
|
|
phy.EnablePcap (ss.str (), apDevice);
|
|
}
|
|
g_signalDbmAvg = 0;
|
|
g_noiseDbmAvg = 0;
|
|
g_samples = 0;
|
|
g_channelNumber = 0;
|
|
|
|
// Make sure we are tuned to 5180 MHz; if not, the example will
|
|
// not work properly
|
|
Ptr<NetDevice> staDevicePtr = staDevice.Get (0);
|
|
Ptr<WifiNetDevice> wifiStaDevicePtr = staDevicePtr->GetObject <WifiNetDevice> ();
|
|
UintegerValue val;
|
|
wifiStaDevicePtr->GetPhy ()->GetAttribute ("Frequency", val);
|
|
if (val.Get () != 5180)
|
|
{
|
|
NS_FATAL_ERROR ("Error: Wi-Fi nodes must be tuned to 5180 MHz to match the waveform generator");
|
|
}
|
|
|
|
Simulator::Stop (Seconds (simulationTime + 1));
|
|
Simulator::Run ();
|
|
|
|
double throughput = 0;
|
|
uint32_t totalPacketsThrough = 0;
|
|
if (udp)
|
|
{
|
|
//UDP
|
|
totalPacketsThrough = DynamicCast<UdpServer> (serverApp.Get (0))->GetReceived ();
|
|
throughput = totalPacketsThrough * payloadSize * 8 / (simulationTime * 1000000.0); //Mbit/s
|
|
}
|
|
else
|
|
{
|
|
//TCP
|
|
uint32_t totalBytesRx = DynamicCast<PacketSink> (sinkApp.Get (0))->GetTotalRx ();
|
|
totalPacketsThrough = totalBytesRx / tcpPacketSize;
|
|
throughput = totalBytesRx * 8 / (simulationTime * 1000000.0); //Mbit/s
|
|
}
|
|
std::cout << std::setw (5) << i <<
|
|
std::setw (6) << (i % 8) <<
|
|
std::setw (10) << datarate <<
|
|
std::setw (12) << throughput <<
|
|
std::setw (8) << totalPacketsThrough;
|
|
if (totalPacketsThrough > 0)
|
|
{
|
|
std::cout << std::setw (12) << g_signalDbmAvg <<
|
|
std::setw (12) << g_noiseDbmAvg <<
|
|
std::setw (12) << (g_signalDbmAvg - g_noiseDbmAvg) <<
|
|
std::endl;
|
|
}
|
|
else
|
|
{
|
|
std::cout << std::setw (12) << "N/A" <<
|
|
std::setw (12) << "N/A" <<
|
|
std::setw (12) << "N/A" <<
|
|
std::endl;
|
|
}
|
|
Simulator::Destroy ();
|
|
}
|
|
return 0;
|
|
}
|