ec4007ca27
Compilers shouldn't warn on unused static inline function and just don't emit code for them in optimized builds. Also debugging-only functions don't pollute symbol tables.
271 lines
10 KiB
C++
271 lines
10 KiB
C++
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2009 The Boeing Company
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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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*/
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//
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// This script configures three nodes on an 802.11b physical layer, with
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// 802.11b NICs in adhoc mode. There is a transmitter, receiver, and
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// interferer. The transmitter sends one packet to the receiver and
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// the receiver receives it with a certain configurable RSS (by default,
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// -80 dBm). The interferer does not do carrier sense and also sends
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// the packet to interfere with the primary packet. The channel model
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// is clear channel.
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//
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// Therefore, at the receiver, the reception looks like this:
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//
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// ------------------time---------------->
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// t0
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//
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// |------------------------------------|
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// | |
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// | primary received frame (time t0) |
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// | |
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// |------------------------------------|
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//
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//
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// t1
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// |-----------------------------------|
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// | |
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// | interfering frame (time t1) |
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// | |
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// |-----------------------------------|
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//
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// The orientation is:
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// n2 ---------> n0 <---------- n1
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// interferer receiver transmitter
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//
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// The configurable parameters are:
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// - Prss (primary rss) (-80 dBm default)
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// - Irss (interfering rss) (-95 dBm default)
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// - delta (microseconds, (t1-t0), may be negative, default 0)
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// - PpacketSize (primary packet size) (bytes, default 1000)
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// - IpacketSize (interferer packet size) (bytes, default 1000)
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//
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// For instance, for this configuration, the interfering frame arrives
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// at -90 dBm with a time offset of 3.2 microseconds:
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//
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// ./waf --run "wifi-simple-interference --Irss=-90 --delta=3.2"
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//
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// Note that all ns-3 attributes (not just the ones exposed in the below
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// script) can be changed at command line; see the documentation.
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//
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// This script can also be helpful to put the Wifi layer into verbose
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// logging mode; this command will turn on all wifi logging:
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//
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// ./waf --run "wifi-simple-interference --verbose=1"
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//
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// When you are done, you will notice a pcap trace file in your directory.
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// If you have tcpdump installed, you can try this:
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//
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// tcpdump -r wifi-simple-interference-0-0.pcap -nn -tt
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// reading from file wifi-simple-interference-0-0.pcap, link-type IEEE802_11_RADIO (802.11 plus BSD radio information header)
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// 10.008704 10008704us tsft 1.0 Mb/s 2437 MHz (0x00c0) -80dB signal -98dB noise IP 10.1.1.2.49153 > 10.1.1.255.80: UDP, length 1000
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//
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// Next, try this command and look at the tcpdump-- you should see two packets
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// that are no longer interfering:
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// ./waf --run "wifi-simple-interference --delta=30000"
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#include "ns3/core-module.h"
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#include "ns3/network-module.h"
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#include "ns3/mobility-module.h"
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#include "ns3/config-store-module.h"
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#include "ns3/wifi-module.h"
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#include "ns3/internet-module.h"
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#include <iostream>
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#include <fstream>
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#include <vector>
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#include <string>
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NS_LOG_COMPONENT_DEFINE ("WifiSimpleInterference");
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using namespace ns3;
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static inline std::string PrintReceivedPacket (Ptr<Socket> socket)
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{
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Address addr;
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socket->GetSockName (addr);
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InetSocketAddress iaddr = InetSocketAddress::ConvertFrom (addr);
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std::ostringstream oss;
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oss << "Received one packet! Socket: " << iaddr.GetIpv4 () << " port: " << iaddr.GetPort ();
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return oss.str ();
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}
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static void ReceivePacket (Ptr<Socket> socket)
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{
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NS_LOG_UNCOND (PrintReceivedPacket (socket));
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}
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static void GenerateTraffic (Ptr<Socket> socket, uint32_t pktSize,
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uint32_t pktCount, Time pktInterval )
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{
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if (pktCount > 0)
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{
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socket->Send (Create<Packet> (pktSize));
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Simulator::Schedule (pktInterval, &GenerateTraffic,
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socket, pktSize,pktCount-1, pktInterval);
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}
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else
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{
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socket->Close ();
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}
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}
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int main (int argc, char *argv[])
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{
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// LogComponentEnable ("InterferenceHelper", LOG_LEVEL_ALL);
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std::string phyMode ("DsssRate1Mbps");
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double Prss = -80; // -dBm
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double Irss = -95; // -dBm
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double delta = 0; // microseconds
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uint32_t PpacketSize = 1000; // bytes
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uint32_t IpacketSize = 1000; // bytes
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bool verbose = false;
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// these are not command line arguments for this version
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uint32_t numPackets = 1;
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double interval = 1.0; // seconds
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double startTime = 10.0; // seconds
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double distanceToRx = 100.0; // meters
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double offset = 91; // This is a magic number used to set the
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// transmit power, based on other configuration
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CommandLine cmd;
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cmd.AddValue ("phyMode", "Wifi Phy mode", phyMode);
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cmd.AddValue ("Prss", "Intended primary received signal strength (dBm)", Prss);
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cmd.AddValue ("Irss", "Intended interfering received signal strength (dBm)", Irss);
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cmd.AddValue ("delta", "time offset (microseconds) for interfering signal", delta);
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cmd.AddValue ("PpacketSize", "size of application packet sent", PpacketSize);
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cmd.AddValue ("IpacketSize", "size of interfering packet sent", IpacketSize);
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cmd.AddValue ("verbose", "turn on all WifiNetDevice log components", verbose);
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cmd.Parse (argc, argv);
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// Convert to time object
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Time interPacketInterval = Seconds (interval);
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// disable fragmentation for frames below 2200 bytes
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Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue ("2200"));
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// turn off RTS/CTS for frames below 2200 bytes
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Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue ("2200"));
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// Fix non-unicast data rate to be the same as that of unicast
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Config::SetDefault ("ns3::WifiRemoteStationManager::NonUnicastMode",
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StringValue (phyMode));
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NodeContainer c;
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c.Create (3);
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// The below set of helpers will help us to put together the wifi NICs we want
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WifiHelper wifi;
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if (verbose)
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{
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wifi.EnableLogComponents (); // Turn on all Wifi logging
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}
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wifi.SetStandard (WIFI_PHY_STANDARD_80211b);
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YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();
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// set it to zero; otherwise, gain will be added
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wifiPhy.Set ("RxGain", DoubleValue (0) );
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wifiPhy.Set ("CcaMode1Threshold", DoubleValue (0.0) );
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// ns-3 supports RadioTap and Prism tracing extensions for 802.11b
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wifiPhy.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO);
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YansWifiChannelHelper wifiChannel;
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wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
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wifiChannel.AddPropagationLoss ("ns3::LogDistancePropagationLossModel");
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wifiPhy.SetChannel (wifiChannel.Create ());
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// Add a non-QoS upper mac, and disable rate control
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NqosWifiMacHelper wifiMac = NqosWifiMacHelper::Default ();
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wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
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"DataMode",StringValue (phyMode),
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"ControlMode",StringValue (phyMode));
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// Set it to adhoc mode
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wifiMac.SetType ("ns3::AdhocWifiMac");
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NetDeviceContainer devices = wifi.Install (wifiPhy, wifiMac, c.Get (0));
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// This will disable these sending devices from detecting a signal
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// so that they do not backoff
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wifiPhy.Set ("EnergyDetectionThreshold", DoubleValue (0.0) );
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wifiPhy.Set ("TxGain", DoubleValue (offset + Prss) );
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devices.Add (wifi.Install (wifiPhy, wifiMac, c.Get (1)));
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wifiPhy.Set ("TxGain", DoubleValue (offset + Irss) );
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devices.Add (wifi.Install (wifiPhy, wifiMac, c.Get (2)));
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// Note that with FixedRssLossModel, the positions below are not
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// used for received signal strength.
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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 (distanceToRx, 0.0, 0.0));
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positionAlloc->Add (Vector (-1*distanceToRx, 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 (c);
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InternetStackHelper internet;
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internet.Install (c);
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Ipv4AddressHelper ipv4;
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NS_LOG_INFO ("Assign IP Addresses.");
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ipv4.SetBase ("10.1.1.0", "255.255.255.0");
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Ipv4InterfaceContainer i = ipv4.Assign (devices);
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TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
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Ptr<Socket> recvSink = Socket::CreateSocket (c.Get (0), tid);
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InetSocketAddress local = InetSocketAddress (Ipv4Address ("10.1.1.1"), 80);
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recvSink->Bind (local);
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recvSink->SetRecvCallback (MakeCallback (&ReceivePacket));
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Ptr<Socket> source = Socket::CreateSocket (c.Get (1), tid);
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InetSocketAddress remote = InetSocketAddress (Ipv4Address ("255.255.255.255"), 80);
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source->SetAllowBroadcast (true);
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source->Connect (remote);
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// Interferer will send to a different port; we will not see a
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// "Received packet" message
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Ptr<Socket> interferer = Socket::CreateSocket (c.Get (2), tid);
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InetSocketAddress interferingAddr = InetSocketAddress (Ipv4Address ("255.255.255.255"), 49000);
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interferer->SetAllowBroadcast (true);
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interferer->Connect (interferingAddr);
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// Tracing
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wifiPhy.EnablePcap ("wifi-simple-interference", devices.Get (0));
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// Output what we are doing
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NS_LOG_UNCOND ("Primary packet RSS=" << Prss << " dBm and interferer RSS=" << Irss << " dBm at time offset=" << delta << " ms");
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Simulator::ScheduleWithContext (source->GetNode ()->GetId (),
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Seconds (startTime), &GenerateTraffic,
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source, PpacketSize, numPackets, interPacketInterval);
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Simulator::ScheduleWithContext (interferer->GetNode ()->GetId (),
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Seconds (startTime + delta/1000000.0), &GenerateTraffic,
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interferer, IpacketSize, numPackets, interPacketInterval);
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Simulator::Run ();
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Simulator::Destroy ();
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return 0;
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}
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