A Discrete-Event Network Simulator
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simple-wifi-frame-aggregation.cc
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1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2009 MIRKO BANCHI
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: Mirko Banchi <mk.banchi@gmail.com>
19  */
20 #include "ns3/core-module.h"
21 #include "ns3/network-module.h"
22 #include "ns3/applications-module.h"
23 #include "ns3/wifi-module.h"
24 #include "ns3/mobility-module.h"
25 #include "ns3/ipv4-global-routing-helper.h"
26 #include "ns3/internet-module.h"
27 
28 //This is a simple example in order to show how 802.11n frame aggregation feature (A-MSDU) works.
29 //
30 //Network topology:
31 //
32 // Wifi 192.168.1.0
33 //
34 // AP
35 // * * *
36 // | | |
37 // n1 n2 n3
38 //
39 //Packets in this simulation aren't marked with a QosTag so they are considered
40 //belonging to BestEffort Access Class (AC_BE).
41 
42 using namespace ns3;
43 
44 NS_LOG_COMPONENT_DEFINE ("SimpleWifiFrameAggregation");
45 
46 int main (int argc, char *argv[])
47 {
48  //LogComponentEnable ("EdcaTxopN", LOG_LEVEL_DEBUG);
49  LogComponentEnable ("MsduAggregator", LOG_LEVEL_INFO);
50  LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);
51  LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);
52 
53  uint32_t nWifi = 1;
54  CommandLine cmd;
55  cmd.AddValue ("nWifi", "Number of wifi STA devices", nWifi);
56  cmd.Parse (argc,argv);
57 
58  NodeContainer wifiNodes;
59  wifiNodes.Create (2);
60  NodeContainer wifiApNode;
61  wifiApNode.Create (1);
62 
63  YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
64  YansWifiPhyHelper phy = YansWifiPhyHelper::Default ();
65  phy.SetChannel (channel.Create ());
66 
67  WifiHelper wifi = WifiHelper::Default ();
68  QosWifiMacHelper mac = QosWifiMacHelper::Default ();
69  wifi.SetRemoteStationManager ("ns3::AarfWifiManager", "FragmentationThreshold", UintegerValue (2500));
70 
71  Ssid ssid = Ssid ("ns-3-802.11n");
72  mac.SetType ("ns3::StaWifiMac",
73  "Ssid", SsidValue (ssid),
74  "ActiveProbing", BooleanValue (false));
75  mac.SetMsduAggregatorForAc (AC_BE, "ns3::MsduStandardAggregator",
76  "MaxAmsduSize", UintegerValue (3839));
77 
78  NetDeviceContainer staDevices;
79  staDevices = wifi.Install (phy, mac, wifiNodes);
80 
81  mac.SetType ("ns3::ApWifiMac",
82  "Ssid", SsidValue (ssid));
83  mac.SetMsduAggregatorForAc (AC_BE, "ns3::MsduStandardAggregator",
84  "MaxAmsduSize", UintegerValue (7935));
85 
86  NetDeviceContainer apDevice;
87  apDevice = wifi.Install (phy, mac, wifiApNode);
88 
89  /* Setting mobility model */
90  MobilityHelper mobility;
91 
92  mobility.SetPositionAllocator ("ns3::GridPositionAllocator",
93  "MinX", DoubleValue (0.0),
94  "MinY", DoubleValue (0.0),
95  "DeltaX", DoubleValue (5.0),
96  "DeltaY", DoubleValue (10.0),
97  "GridWidth", UintegerValue (3),
98  "LayoutType", StringValue ("RowFirst"));
99 
100  mobility.SetMobilityModel ("ns3::RandomWalk2dMobilityModel",
101  "Bounds", RectangleValue (Rectangle (-50, 50, -50, 50)));
102  mobility.Install (wifiNodes);
103 
104  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
105  mobility.Install (wifiApNode);
106 
107  /* Internet stack*/
108  InternetStackHelper stack;
109  stack.Install (wifiApNode);
110  stack.Install (wifiNodes);
111 
112  Ipv4AddressHelper address;
113 
114  address.SetBase ("192.168.1.0", "255.255.255.0");
115  Ipv4InterfaceContainer wifiNodesInterfaces;
116  Ipv4InterfaceContainer apNodeInterface;
117 
118  wifiNodesInterfaces = address.Assign (staDevices);
119  apNodeInterface = address.Assign (apDevice);
120 
121  /* Setting applications */
122  UdpEchoServerHelper echoServer (9);
123 
124  ApplicationContainer serverApps = echoServer.Install (wifiNodes.Get (1));
125  serverApps.Start (Seconds (1.0));
126  serverApps.Stop (Seconds (10.0));
127 
128  UdpEchoClientHelper echoClient (wifiNodesInterfaces.GetAddress (1), 9);
129  echoClient.SetAttribute ("MaxPackets", UintegerValue (3));
130  echoClient.SetAttribute ("Interval", TimeValue (Seconds (0.000001)));
131  echoClient.SetAttribute ("PacketSize", UintegerValue (1500));
132 
133  ApplicationContainer clientApps =
134  echoClient.Install (wifiNodes.Get (0));
135  clientApps.Start (Seconds (2.0));
136  clientApps.Stop (Seconds (10.0));
137 
138  Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
139 
140  Simulator::Stop (Seconds (10.0));
141 
142  phy.EnablePcap ("test-802.11n",
143  wifiNodes.Get (nWifi - 1)->GetId (), 0);
144 
145  Simulator::Run ();
146  Simulator::Destroy ();
147 
148  return 0;
149 }