--- a/src/devices/wifi/wifi-phy-test.cc Wed Jun 11 10:02:09 2008 -0700
+++ b/src/devices/wifi/wifi-phy-test.cc Wed Jun 11 10:57:42 2008 -0700
@@ -10,6 +10,7 @@
#include "ns3/simulator.h"
#include "ns3/nstime.h"
#include "ns3/command-line.h"
+#include "ns3/flow-id-tag.h"
using namespace ns3;
@@ -18,6 +19,7 @@
public:
struct Input
{
+ Input ();
double distance;
std::string txMode;
uint8_t txPowerLevel;
@@ -30,13 +32,10 @@
};
PsrExperiment ();
- static struct PsrExperiment::Input GetDefaultInput (void);
-
struct PsrExperiment::Output Run (struct PsrExperiment::Input input);
private:
void Send (void);
- typedef Callback<void,Ptr<Packet>, double, WifiMode, enum WifiPreamble> SyncOkCallback;
void Receive (Ptr<Packet> p, double snr, WifiMode mode, enum WifiPreamble preamble);
Ptr<WifiPhy> m_tx;
struct Input m_input;
@@ -59,17 +58,13 @@
PsrExperiment::PsrExperiment ()
{}
-struct PsrExperiment::Input
-PsrExperiment::GetDefaultInput (void)
-{
- struct PsrExperiment::Input input;
- input.distance = 5.0;
- input.packetSize = 2304;
- input.nPackets = 400;
- input.txPowerLevel = 0;
- input.txMode = "wifia-6mbs";
- return input;
-}
+PsrExperiment::Input::Input ()
+ : distance (5.0),
+ txMode ("wifia-6mbs"),
+ txPowerLevel (0),
+ packetSize (2304),
+ nPackets (400)
+{}
struct PsrExperiment::Output
PsrExperiment::Run (struct PsrExperiment::Input input)
@@ -106,10 +101,146 @@
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->AddTag (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->AddTag (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->FindFirstMatchingTag (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 ("wifia-6mbs"),
+ txModeB ("wifia-6mbs"),
+ 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<MobilityModel> posTxA = CreateObject<StaticMobilityModel> ();
+ posTxA->SetPosition (Vector (input.xA, 0.0, 0.0));
+ Ptr<MobilityModel> posTxB = CreateObject<StaticMobilityModel> ();
+ posTxB->SetPosition (Vector (input.xB, 0.0, 0.0));
+ Ptr<MobilityModel> posRx = CreateObject<StaticMobilityModel> ();
+ posRx->SetPosition (Vector (0, 0.0, 0.0));
+
+ Ptr<WifiPhy> txA = CreateObject<WifiPhy> ();
+ Ptr<WifiPhy> txB = CreateObject<WifiPhy> ();
+ Ptr<WifiPhy> rx = CreateObject<WifiPhy> ();
+ rx->SetReceiveOkCallback (MakeCallback (&CollisionExperiment::Receive, this));
+
+ Ptr<WifiChannel> channel = CreateObject<WifiChannel> ();
+ channel->SetPropagationDelayModel (CreateObject<ConstantSpeedPropagationDelayModel> ());
+ Ptr<LogDistancePropagationLossModel> log = CreateObject<LogDistancePropagationLossModel> ();
+ log->SetReferenceModel (CreateObject<FriisPropagationLossModel> ());
+ channel->SetPropagationLossModel (log);
+
+ channel->Add (0, txA, posTxA);
+ channel->Add (0, txB, posTxB);
+ channel->Add (0, rx, posRx);
+ txA->SetChannel (channel);
+ txB->SetChannel (channel);
+ rx->SetChannel (channel);
+
+ 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 = experiment.GetDefaultInput ();
+ struct PsrExperiment::Input input;
CommandLine cmd;
cmd.AddValue ("Distance", "The distance between two phys", input.distance);
@@ -137,7 +268,7 @@
static void PrintPsrVsDistance (int argc, char *argv[])
{
- struct PsrExperiment::Input input = PsrExperiment::GetDefaultInput ();
+ 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);
@@ -189,7 +320,7 @@
static void PrintSizeVsRange (int argc, char *argv[])
{
double targetPsr = 0.05;
- struct PsrExperiment::Input input = PsrExperiment::GetDefaultInput ();
+ 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);
@@ -222,6 +353,36 @@
}
}
+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[])
@@ -232,6 +393,7 @@
<< "Psr "
<< "SizeVsRange "
<< "PsrVsDistance "
+ << "PsrVsCollisionInterval "
<< std::endl;
return -1;
}
@@ -251,6 +413,10 @@
{
PrintPsrVsDistance (argc, argv);
}
+ else if (type == "PsrVsCollisionInterval")
+ {
+ PrintPsrVsCollisionInterval (argc, argv);
+ }
return 0;
}