A Discrete-Event Network Simulator
API
wifi-timing-attributes.cc
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1/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2015
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: Sebastien Deronne <sebastien.deronne@gmail.com>
19 */
20
21#include "ns3/command-line.h"
22#include "ns3/config.h"
23#include "ns3/uinteger.h"
24#include "ns3/double.h"
25#include "ns3/string.h"
26#include "ns3/log.h"
27#include "ns3/yans-wifi-helper.h"
28#include "ns3/ssid.h"
29#include "ns3/mobility-helper.h"
30#include "ns3/ipv4-address-helper.h"
31#include "ns3/yans-wifi-channel.h"
32#include "ns3/mobility-model.h"
33#include "ns3/internet-stack-helper.h"
34#include "ns3/udp-client-server-helper.h"
35#include "ns3/ipv4-global-routing-helper.h"
36
37// This example shows how to set Wi-Fi timing parameters through WifiMac attributes.
38//
39// Example: set slot time to 20 microseconds, while keeping other values as defined in the simulation script:
40//
41// ./ns3 run "wifi-timing-attributes --slot=20"
42//
43// Network topology:
44//
45// Wifi 192.168.1.0
46//
47// AP
48// * *
49// | |
50// n1 n2
51
52using namespace ns3;
53
54NS_LOG_COMPONENT_DEFINE ("wifi-timing-attributes");
55
56int main (int argc, char *argv[])
57{
58 uint32_t slot = 9; //slot time in microseconds
59 uint32_t sifs = 10; //SIFS duration in microseconds
60 uint32_t pifs = 19; //PIFS duration in microseconds
61 double simulationTime = 10; //simulation time in seconds
62
63 CommandLine cmd (__FILE__);
64 cmd.AddValue ("slot", "Slot time in microseconds", slot);
65 cmd.AddValue ("sifs", "SIFS duration in microseconds", sifs);
66 cmd.AddValue ("pifs", "PIFS duration in microseconds", pifs);
67 cmd.AddValue ("simulationTime", "Simulation time in seconds", simulationTime);
68 cmd.Parse (argc,argv);
69
70 //Since default reference loss is defined for 5 GHz, it needs to be changed when operating at 2.4 GHz
71 Config::SetDefault ("ns3::LogDistancePropagationLossModel::ReferenceLoss", DoubleValue (40.046));
72
73 //Create nodes
74 NodeContainer wifiStaNode;
75 wifiStaNode.Create (1);
77 wifiApNode.Create (1);
78
79 //Create wireless channel
80 YansWifiChannelHelper channel = YansWifiChannelHelper::Default ();
82 phy.SetChannel (channel.Create ());
83
84 //Default IEEE 802.11n (2.4 GHz)
86 wifi.SetStandard (WIFI_STANDARD_80211n);
87 wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
88 "DataMode", StringValue ("HtMcs7"),
89 "ControlMode", StringValue ("HtMcs0"));
91
92 //Install PHY and MAC
93 Ssid ssid = Ssid ("ns3-wifi");
94 mac.SetType ("ns3::StaWifiMac",
95 "Ssid", SsidValue (ssid));
96
97 NetDeviceContainer staDevice;
98 staDevice = wifi.Install (phy, mac, wifiStaNode);
99
100 mac.SetType ("ns3::ApWifiMac",
101 "Ssid", SsidValue (ssid));
102
103 NetDeviceContainer apDevice;
104 apDevice = wifi.Install (phy, mac, wifiApNode);
105
106 //Once install is done, we overwrite the standard timing values
107 Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/Slot", TimeValue (MicroSeconds (slot)));
108 Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/Sifs", TimeValue (MicroSeconds (sifs)));
109 Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/Pifs", TimeValue (MicroSeconds (pifs)));
110
111 //Mobility
113 Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
114
115 positionAlloc->Add (Vector (0.0, 0.0, 0.0));
116 positionAlloc->Add (Vector (1.0, 0.0, 0.0));
117 mobility.SetPositionAllocator (positionAlloc);
118
119 mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
120
121 mobility.Install (wifiApNode);
122 mobility.Install (wifiStaNode);
123
124 //Internet stack
126 stack.Install (wifiApNode);
127 stack.Install (wifiStaNode);
128
130
131 address.SetBase ("192.168.1.0", "255.255.255.0");
132 Ipv4InterfaceContainer staNodeInterface;
133 Ipv4InterfaceContainer apNodeInterface;
134
135 staNodeInterface = address.Assign (staDevice);
136 apNodeInterface = address.Assign (apDevice);
137
138 //Setting applications
139 uint16_t port = 9;
140 UdpServerHelper server (port);
141 ApplicationContainer serverApp = server.Install (wifiStaNode.Get (0));
142 serverApp.Start (Seconds (0.0));
143 serverApp.Stop (Seconds (simulationTime + 1));
144
145 UdpClientHelper client (staNodeInterface.GetAddress (0), port);
146 client.SetAttribute ("MaxPackets", UintegerValue (4294967295u));
147 client.SetAttribute ("Interval", TimeValue (Time ("0.0001"))); //packets/s
148 client.SetAttribute ("PacketSize", UintegerValue (1472)); //bytes
149
150 ApplicationContainer clientApp = client.Install (wifiApNode.Get (0));
151 clientApp.Start (Seconds (1.0));
152 clientApp.Stop (Seconds (simulationTime + 1));
153
154 //Populate routing table
155 Ipv4GlobalRoutingHelper::PopulateRoutingTables ();
156
157 //Set simulation time and launch simulation
158 Simulator::Stop (Seconds (simulationTime + 1));
159 Simulator::Run ();
160
161 //Get and print results
162 uint64_t totalPacketsThrough = DynamicCast<UdpServer> (serverApp.Get (0))->GetReceived ();
163 double throughput = totalPacketsThrough * 1472 * 8 / (simulationTime * 1000000.0); //Mbit/s
164 std::cout << "Throughput: " << throughput << " Mbit/s" << std::endl;
165
166 Simulator::Destroy ();
167 return 0;
168}
holds a vector of ns3::Application pointers.
Ptr< Application > Get(uint32_t i) const
Get the Ptr<Application> stored in this container at a given index.
void Start(Time start)
Arrange for all of the Applications in this container to Start() at the Time given as a parameter.
void Stop(Time stop)
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
Parse command-line arguments.
Definition: command-line.h:229
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition: double.h:41
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
holds a vector of std::pair of Ptr<Ipv4> and interface index.
Ipv4Address GetAddress(uint32_t i, uint32_t j=0) const
Helper class used to assign positions and mobility models to nodes.
holds a vector of ns3::NetDevice pointers
keep track of a set of node pointers.
void Create(uint32_t n)
Create n nodes and append pointers to them to the end of this NodeContainer.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
Smart pointer class similar to boost::intrusive_ptr.
Definition: ptr.h:74
The IEEE 802.11 SSID Information Element.
Definition: ssid.h:36
AttributeValue implementation for Ssid.
Hold variables of type string.
Definition: string.h:41
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:103
AttributeValue implementation for Time.
Definition: nstime.h:1308
Create a client application which sends UDP packets carrying a 32bit sequence number and a 64 bit tim...
Create a server application which waits for input UDP packets and uses the information carried into t...
Hold an unsigned integer type.
Definition: uinteger.h:44
Vector3D Vector
Vector alias typedef for compatibility with mobility models.
Definition: vector.h:324
helps to create WifiNetDevice objects
Definition: wifi-helper.h:323
create MAC layers for a ns3::WifiNetDevice.
manage and create wifi channel objects for the YANS model.
Make it easy to create and manage PHY objects for the YANS model.
uint16_t port
Definition: dsdv-manet.cc:45
void SetDefault(std::string name, const AttributeValue &value)
Definition: config.cc:849
void Set(std::string path, const AttributeValue &value)
Definition: config.cc:839
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:205
Time MicroSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition: nstime.h:1260
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1244
@ WIFI_STANDARD_80211n
address
Definition: first.py:44
stack
Definition: first.py:41
Every class exported by the ns3 library is enclosed in the ns3 namespace.
cmd
Definition: second.py:35
ssid
Definition: third.py:97
channel
Definition: third.py:92
mac
Definition: third.py:96
wifi
Definition: third.py:99
wifiApNode
Definition: third.py:90
mobility
Definition: third.py:107
phy
Definition: third.py:93