A Discrete-Event Network Simulator
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wifi-ap.cc
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1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2005,2006,2007 INRIA
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 
21 
22 #include "ns3/core-module.h"
23 #include "ns3/network-module.h"
24 #include "ns3/applications-module.h"
25 #include "ns3/mobility-module.h"
26 #include "ns3/config-store-module.h"
27 #include "ns3/wifi-module.h"
28 #include "ns3/athstats-helper.h"
29 
30 #include <iostream>
31 
32 using namespace ns3;
33 
34 static bool g_verbose = true;
35 
36 void
37 DevTxTrace (std::string context, Ptr<const Packet> p)
38 {
39  if (g_verbose)
40  {
41  std::cout << " TX p: " << *p << std::endl;
42  }
43 }
44 void
45 DevRxTrace (std::string context, Ptr<const Packet> p)
46 {
47  if (g_verbose)
48  {
49  std::cout << " RX p: " << *p << std::endl;
50  }
51 }
52 void
53 PhyRxOkTrace (std::string context, Ptr<const Packet> packet, double snr, WifiMode mode, enum WifiPreamble preamble)
54 {
55  if (g_verbose)
56  {
57  std::cout << "PHYRXOK mode=" << mode << " snr=" << snr << " " << *packet << std::endl;
58  }
59 }
60 void
61 PhyRxErrorTrace (std::string context, Ptr<const Packet> packet, double snr)
62 {
63  if (g_verbose)
64  {
65  std::cout << "PHYRXERROR snr=" << snr << " " << *packet << std::endl;
66  }
67 }
68 void
69 PhyTxTrace (std::string context, Ptr<const Packet> packet, WifiMode mode, WifiPreamble preamble, uint8_t txPower)
70 {
71  if (g_verbose)
72  {
73  std::cout << "PHYTX mode=" << mode << " " << *packet << std::endl;
74  }
75 }
76 void
77 PhyStateTrace (std::string context, Time start, Time duration, enum WifiPhy::State state)
78 {
79  if (g_verbose)
80  {
81  std::cout << " state=" << state << " start=" << start << " duration=" << duration << std::endl;
82  }
83 }
84 
85 static void
86 SetPosition (Ptr<Node> node, Vector position)
87 {
88  Ptr<MobilityModel> mobility = node->GetObject<MobilityModel> ();
89  mobility->SetPosition (position);
90 }
91 
92 static Vector
94 {
95  Ptr<MobilityModel> mobility = node->GetObject<MobilityModel> ();
96  return mobility->GetPosition ();
97 }
98 
99 static void
101 {
102  Vector pos = GetPosition (node);
103  pos.x += 5.0;
104  if (pos.x >= 210.0)
105  {
106  return;
107  }
108  SetPosition (node, pos);
109 
110  if (g_verbose)
111  {
112  //std::cout << "x="<<pos.x << std::endl;
113  }
114  Simulator::Schedule (Seconds (1.0), &AdvancePosition, node);
115 }
116 
117 int main (int argc, char *argv[])
118 {
119  CommandLine cmd;
120  cmd.AddValue ("verbose", "Print trace information if true", g_verbose);
121 
122  cmd.Parse (argc, argv);
123 
125 
126  // enable rts cts all the time.
127  Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue ("0"));
128  // disable fragmentation
129  Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue ("2200"));
130 
132  MobilityHelper mobility;
133  NodeContainer stas;
134  NodeContainer ap;
135  NetDeviceContainer staDevs;
136  PacketSocketHelper packetSocket;
137 
138  stas.Create (2);
139  ap.Create (1);
140 
141  // give packet socket powers to nodes.
142  packetSocket.Install (stas);
143  packetSocket.Install (ap);
144 
148  wifiPhy.SetChannel (wifiChannel.Create ());
149  Ssid ssid = Ssid ("wifi-default");
150  wifi.SetRemoteStationManager ("ns3::ArfWifiManager");
151  // setup stas.
152  wifiMac.SetType ("ns3::StaWifiMac",
153  "Ssid", SsidValue (ssid),
154  "ActiveProbing", BooleanValue (false));
155  staDevs = wifi.Install (wifiPhy, wifiMac, stas);
156  // setup ap.
157  wifiMac.SetType ("ns3::ApWifiMac",
158  "Ssid", SsidValue (ssid));
159  wifi.Install (wifiPhy, wifiMac, ap);
160 
161  // mobility.
162  mobility.Install (stas);
163  mobility.Install (ap);
164 
165  Simulator::Schedule (Seconds (1.0), &AdvancePosition, ap.Get (0));
166 
167  PacketSocketAddress socket;
168  socket.SetSingleDevice (staDevs.Get (0)->GetIfIndex ());
169  socket.SetPhysicalAddress (staDevs.Get (1)->GetAddress ());
170  socket.SetProtocol (1);
171 
172  OnOffHelper onoff ("ns3::PacketSocketFactory", Address (socket));
173  onoff.SetConstantRate (DataRate ("500kb/s"));
174 
175  ApplicationContainer apps = onoff.Install (stas.Get (0));
176  apps.Start (Seconds (0.5));
177  apps.Stop (Seconds (43.0));
178 
179  Simulator::Stop (Seconds (44.0));
180 
181  Config::Connect ("/NodeList/*/DeviceList/*/Mac/MacTx", MakeCallback (&DevTxTrace));
182  Config::Connect ("/NodeList/*/DeviceList/*/Mac/MacRx", MakeCallback (&DevRxTrace));
183  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/RxOk", MakeCallback (&PhyRxOkTrace));
184  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/RxError", MakeCallback (&PhyRxErrorTrace));
185  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/Tx", MakeCallback (&PhyTxTrace));
186  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/State", MakeCallback (&PhyStateTrace));
187 
188  AthstatsHelper athstats;
189  athstats.EnableAthstats ("athstats-sta", stas);
190  athstats.EnableAthstats ("athstats-ap", ap);
191 
192  Simulator::Run ();
193 
195 
196  return 0;
197 }