--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/wifi/examples/wifi-phy-test.cc Tue Jul 05 09:06:45 2011 -0700
@@ -0,0 +1,455 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2005,2006 INRIA
+ *
+ * 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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
+ */
+#include "ns3/wifi-net-device.h"
+#include "ns3/yans-wifi-channel.h"
+#include "ns3/yans-wifi-phy.h"
+#include "ns3/propagation-loss-model.h"
+#include "ns3/propagation-delay-model.h"
+#include "ns3/error-rate-model.h"
+#include "ns3/yans-error-rate-model.h"
+#include "ns3/ptr.h"
+#include "ns3/mobility-model.h"
+#include "ns3/constant-position-mobility-model.h"
+#include "ns3/vector.h"
+#include "ns3/packet.h"
+#include "ns3/simulator.h"
+#include "ns3/nstime.h"
+#include "ns3/command-line.h"
+#include "ns3/flow-id-tag.h"
+
+using namespace ns3;
+
+class PsrExperiment
+{
+public:
+ struct Input
+ {
+ Input ();
+ double distance;
+ std::string txMode;
+ uint8_t txPowerLevel;
+ uint32_t packetSize;
+ uint32_t nPackets;
+ };
+ struct Output
+ {
+ uint32_t received;
+ };
+ PsrExperiment ();
+
+ struct PsrExperiment::Output Run (struct PsrExperiment::Input input);
+
+private:
+ void Send (void);
+ void Receive (Ptr<Packet> p, double snr, WifiMode mode, enum WifiPreamble preamble);
+ Ptr<WifiPhy> m_tx;
+ struct Input m_input;
+ struct Output m_output;
+};
+
+void
+PsrExperiment::Send (void)
+{
+ Ptr<Packet> p = Create<Packet> (m_input.packetSize);
+ WifiMode mode = WifiMode (m_input.txMode);
+ m_tx->SendPacket (p, mode, WIFI_PREAMBLE_SHORT, m_input.txPowerLevel);
+}
+
+void
+PsrExperiment::Receive (Ptr<Packet> p, double snr, WifiMode mode, enum WifiPreamble preamble)
+{
+ m_output.received++;
+}
+
+PsrExperiment::PsrExperiment ()
+{
+}
+PsrExperiment::Input::Input ()
+ : distance (5.0),
+ txMode ("OfdmRate6Mbps"),
+ txPowerLevel (0),
+ packetSize (2304),
+ nPackets (400)
+{
+}
+
+struct PsrExperiment::Output
+PsrExperiment::Run (struct PsrExperiment::Input input)
+{
+ m_output.received = 0;
+ m_input = input;
+
+ Ptr<MobilityModel> posTx = CreateObject<ConstantPositionMobilityModel> ();
+ posTx->SetPosition (Vector (0.0, 0.0, 0.0));
+ Ptr<MobilityModel> posRx = CreateObject<ConstantPositionMobilityModel> ();
+ posRx->SetPosition (Vector (m_input.distance, 0.0, 0.0));
+
+ Ptr<YansWifiChannel> channel = CreateObject<YansWifiChannel> ();
+ channel->SetPropagationDelayModel (CreateObject<ConstantSpeedPropagationDelayModel> ());
+ Ptr<LogDistancePropagationLossModel> log = CreateObject<LogDistancePropagationLossModel> ();
+ channel->SetPropagationLossModel (log);
+
+ Ptr<YansWifiPhy> tx = CreateObject<YansWifiPhy> ();
+ Ptr<YansWifiPhy> rx = CreateObject<YansWifiPhy> ();
+ Ptr<ErrorRateModel> error = CreateObject<YansErrorRateModel> ();
+ tx->SetErrorRateModel (error);
+ rx->SetErrorRateModel (error);
+ tx->SetChannel (channel);
+ rx->SetChannel (channel);
+ tx->SetMobility (posTx);
+ rx->SetMobility (posRx);
+
+ rx->SetReceiveOkCallback (MakeCallback (&PsrExperiment::Receive, this));
+
+ for (uint32_t i = 0; i < m_input.nPackets; ++i)
+ {
+ Simulator::Schedule (Seconds (i), &PsrExperiment::Send, this);
+ }
+ m_tx = tx;
+ Simulator::Run ();
+ return m_output;
+}
+
+
+class CollisionExperiment
+{
+public:
+ struct Input
+ {
+ Input ();
+ Time interval;
+ double xA;
+ double xB;
+ std::string txModeA;
+ std::string txModeB;
+ uint8_t txPowerLevelA;
+ uint8_t txPowerLevelB;
+ uint32_t packetSizeA;
+ uint32_t packetSizeB;
+ uint32_t nPackets;
+ };
+ struct Output
+ {
+ uint32_t receivedA;
+ uint32_t receivedB;
+ };
+ CollisionExperiment ();
+
+ struct CollisionExperiment::Output Run (struct CollisionExperiment::Input input);
+private:
+ void SendA (void) const;
+ void SendB (void) const;
+ void Receive (Ptr<Packet> p, double snr, WifiMode mode, enum WifiPreamble preamble);
+ Ptr<WifiPhy> m_txA;
+ Ptr<WifiPhy> m_txB;
+ uint32_t m_flowIdA;
+ uint32_t m_flowIdB;
+ struct Input m_input;
+ struct Output m_output;
+};
+
+void
+CollisionExperiment::SendA (void) const
+{
+ Ptr<Packet> p = Create<Packet> (m_input.packetSizeA);
+ p->AddByteTag (FlowIdTag (m_flowIdA));
+ m_txA->SendPacket (p, WifiMode (m_input.txModeA),
+ WIFI_PREAMBLE_SHORT, m_input.txPowerLevelA);
+}
+
+void
+CollisionExperiment::SendB (void) const
+{
+ Ptr<Packet> p = Create<Packet> (m_input.packetSizeB);
+ p->AddByteTag (FlowIdTag (m_flowIdB));
+ m_txB->SendPacket (p, WifiMode (m_input.txModeB),
+ WIFI_PREAMBLE_SHORT, m_input.txPowerLevelB);
+}
+
+void
+CollisionExperiment::Receive (Ptr<Packet> p, double snr, WifiMode mode, enum WifiPreamble preamble)
+{
+ FlowIdTag tag;
+ p->FindFirstMatchingByteTag (tag);
+ if (tag.GetFlowId () == m_flowIdA)
+ {
+ m_output.receivedA++;
+ }
+ else if (tag.GetFlowId () == m_flowIdB)
+ {
+ m_output.receivedB++;
+ }
+}
+
+CollisionExperiment::CollisionExperiment ()
+{
+}
+CollisionExperiment::Input::Input ()
+ : interval (MicroSeconds (0)),
+ xA (-5),
+ xB (5),
+ txModeA ("OfdmRate6Mbps"),
+ txModeB ("OfdmRate6Mbps"),
+ txPowerLevelA (0),
+ txPowerLevelB (0),
+ packetSizeA (2304),
+ packetSizeB (2304),
+ nPackets (400)
+{
+}
+
+struct CollisionExperiment::Output
+CollisionExperiment::Run (struct CollisionExperiment::Input input)
+{
+ m_output.receivedA = 0;
+ m_output.receivedB = 0;
+ m_input = input;
+
+ m_flowIdA = FlowIdTag::AllocateFlowId ();
+ m_flowIdB = FlowIdTag::AllocateFlowId ();
+
+ Ptr<YansWifiChannel> channel = CreateObject<YansWifiChannel> ();
+ channel->SetPropagationDelayModel (CreateObject<ConstantSpeedPropagationDelayModel> ());
+ Ptr<LogDistancePropagationLossModel> log = CreateObject<LogDistancePropagationLossModel> ();
+ channel->SetPropagationLossModel (log);
+
+ Ptr<MobilityModel> posTxA = CreateObject<ConstantPositionMobilityModel> ();
+ posTxA->SetPosition (Vector (input.xA, 0.0, 0.0));
+ Ptr<MobilityModel> posTxB = CreateObject<ConstantPositionMobilityModel> ();
+ posTxB->SetPosition (Vector (input.xB, 0.0, 0.0));
+ Ptr<MobilityModel> posRx = CreateObject<ConstantPositionMobilityModel> ();
+ posRx->SetPosition (Vector (0, 0.0, 0.0));
+
+ Ptr<YansWifiPhy> txA = CreateObject<YansWifiPhy> ();
+ Ptr<YansWifiPhy> txB = CreateObject<YansWifiPhy> ();
+ Ptr<YansWifiPhy> rx = CreateObject<YansWifiPhy> ();
+
+ Ptr<ErrorRateModel> error = CreateObject<YansErrorRateModel> ();
+ txA->SetErrorRateModel (error);
+ txB->SetErrorRateModel (error);
+ rx->SetErrorRateModel (error);
+ txA->SetChannel (channel);
+ txB->SetChannel (channel);
+ rx->SetChannel (channel);
+ txA->SetMobility (posTxA);
+ txB->SetMobility (posTxB);
+ rx->SetMobility (posRx);
+
+
+ rx->SetReceiveOkCallback (MakeCallback (&CollisionExperiment::Receive, this));
+
+ for (uint32_t i = 0; i < m_input.nPackets; ++i)
+ {
+ Simulator::Schedule (Seconds (i), &CollisionExperiment::SendA, this);
+ }
+ for (uint32_t i = 0; i < m_input.nPackets; ++i)
+ {
+ Simulator::Schedule (Seconds (i) + m_input.interval, &CollisionExperiment::SendB, this);
+ }
+ m_txA = txA;
+ m_txB = txB;
+ Simulator::Run ();
+ return m_output;
+}
+
+
+static void PrintPsr (int argc, char *argv[])
+{
+ PsrExperiment experiment;
+ struct PsrExperiment::Input input;
+
+ CommandLine cmd;
+ cmd.AddValue ("Distance", "The distance between two phys", input.distance);
+ cmd.AddValue ("PacketSize", "The size of each packet sent", input.packetSize);
+ cmd.AddValue ("TxMode", "The mode to use to send each packet", input.txMode);
+ cmd.AddValue ("NPackets", "The number of packets to send", input.nPackets);
+ cmd.AddValue ("TxPowerLevel", "The power level index to use to send each packet", input.txPowerLevel);
+ cmd.Parse (argc, argv);
+
+ struct PsrExperiment::Output output;
+ output = experiment.Run (input);
+
+ double psr = output.received;
+ psr /= input.nPackets;
+
+ std::cout << psr << std::endl;
+}
+
+double CalcPsr (struct PsrExperiment::Output output, struct PsrExperiment::Input input)
+{
+ double psr = output.received;
+ psr /= input.nPackets;
+ return psr;
+}
+
+static void PrintPsrVsDistance (int argc, char *argv[])
+{
+ struct PsrExperiment::Input input;
+ CommandLine cmd;
+ cmd.AddValue ("TxPowerLevel", "The power level index to use to send each packet", input.txPowerLevel);
+ cmd.AddValue ("TxMode", "The mode to use to send each packet", input.txMode);
+ cmd.AddValue ("NPackets", "The number of packets to send", input.nPackets);
+ cmd.AddValue ("PacketSize", "The size of each packet sent", input.packetSize);
+ cmd.Parse (argc, argv);
+ for (input.distance = 1.0; input.distance < 165; input.distance += 2.0)
+ {
+ std::cout << input.distance;
+ PsrExperiment experiment;
+ struct PsrExperiment::Output output;
+
+ input.txMode = "OfdmRate6Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate9Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate12Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate18Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate24Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate36Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate48Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ input.txMode = "OfdmRate54Mbps";
+ output = experiment.Run (input);
+ std::cout << " " << CalcPsr (output, input);
+
+ std::cout << std::endl;
+ }
+}
+
+static void PrintSizeVsRange (int argc, char *argv[])
+{
+ double targetPsr = 0.05;
+ struct PsrExperiment::Input input;
+ CommandLine cmd;
+ cmd.AddValue ("TxPowerLevel", "The power level index to use to send each packet", input.txPowerLevel);
+ cmd.AddValue ("TxMode", "The mode to use to send each packet", input.txMode);
+ cmd.AddValue ("NPackets", "The number of packets to send", input.nPackets);
+ cmd.AddValue ("TargetPsr", "The psr needed to assume that we are within range", targetPsr);
+ cmd.Parse (argc, argv);
+ for (input.packetSize = 10; input.packetSize < 3000; input.packetSize += 40)
+ {
+ double precision = 0.1;
+ double low = 1.0;
+ double high = 200.0;
+ while (high - low > precision)
+ {
+ double middle = low + (high - low) / 2;
+ struct PsrExperiment::Output output;
+ PsrExperiment experiment;
+ input.distance = middle;
+ output = experiment.Run (input);
+ double psr = CalcPsr (output, input);
+ if (psr >= targetPsr)
+ {
+ low = middle;
+ }
+ else
+ {
+ high = middle;
+ }
+ }
+ std::cout << input.packetSize << " " << input.distance << std::endl;
+ }
+}
+
+static void PrintPsrVsCollisionInterval (int argc, char *argv[])
+{
+ CollisionExperiment::Input input;
+ input.nPackets = 100;
+ CommandLine cmd;
+ cmd.AddValue ("NPackets", "The number of packets to send for each transmitter", input.nPackets);
+ cmd.AddValue ("xA", "the position of transmitter A", input.xA);
+ cmd.AddValue ("xB", "the position of transmitter B", input.xB);
+ for (uint32_t i = 0; i < 100; i += 1)
+ {
+ CollisionExperiment experiment;
+ CollisionExperiment::Output output;
+ input.interval = MicroSeconds (i);
+ output = experiment.Run (input);
+ double perA = (output.receivedA + 0.0) / (input.nPackets + 0.0);
+ double perB = (output.receivedB + 0.0) / (input.nPackets + 0.0);
+ std::cout << i << " " << perA << " " << perB << std::endl;
+ }
+ for (uint32_t i = 100; i < 4000; i += 50)
+ {
+ CollisionExperiment experiment;
+ CollisionExperiment::Output output;
+ input.interval = MicroSeconds (i);
+ output = experiment.Run (input);
+ double perA = (output.receivedA + 0.0) / (input.nPackets + 0.0);
+ double perB = (output.receivedB + 0.0) / (input.nPackets + 0.0);
+ std::cout << i << " " << perA << " " << perB << std::endl;
+ }
+}
+
+
+
+int main (int argc, char *argv[])
+{
+ if (argc <= 1)
+ {
+ std::cout << "Available experiments: "
+ << "Psr "
+ << "SizeVsRange "
+ << "PsrVsDistance "
+ << "PsrVsCollisionInterval "
+ << std::endl;
+ return -1;
+ }
+ std::string type = argv[1];
+ argc--;
+ argv[1] = argv[0];
+ argv++;
+ if (type == "Psr")
+ {
+ PrintPsr (argc, argv);
+ }
+ else if (type == "SizeVsRange")
+ {
+ PrintSizeVsRange (argc, argv);
+ }
+ else if (type == "PsrVsDistance")
+ {
+ PrintPsrVsDistance (argc, argv);
+ }
+ else if (type == "PsrVsCollisionInterval")
+ {
+ PrintPsrVsCollisionInterval (argc, argv);
+ }
+
+ return 0;
+}