A Discrete-Event Network Simulator
API
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wifi-backward-compatibility.cc
Go to the documentation of this file.
1/*
2 * Copyright (c) 2017
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 * Author: Sebastien Deronne <sebastien.deronne@gmail.com>
7 */
8
9#include "ns3/attribute-container.h"
10#include "ns3/boolean.h"
11#include "ns3/command-line.h"
12#include "ns3/config.h"
13#include "ns3/enum.h"
14#include "ns3/internet-stack-helper.h"
15#include "ns3/ipv4-address-helper.h"
16#include "ns3/ipv4-global-routing-helper.h"
17#include "ns3/log.h"
18#include "ns3/mobility-helper.h"
19#include "ns3/packet-sink-helper.h"
20#include "ns3/ssid.h"
21#include "ns3/tuple.h"
22#include "ns3/udp-client-server-helper.h"
23#include "ns3/udp-server.h"
24#include "ns3/uinteger.h"
25#include "ns3/yans-wifi-channel.h"
26#include "ns3/yans-wifi-helper.h"
27
28// This is an example to show how to configure an IEEE 802.11 Wi-Fi
29// network where the AP and the station use different 802.11 standards.
30//
31// It outputs the throughput for a given configuration: user can specify
32// the 802.11 versions for the AP and the station as well as their rate
33// adaptation algorithms. It also allows to decide whether the station,
34// the AP or both has/have traffic to send.
35//
36// Example for an IEEE 802.11ac station sending traffic to an 802.11a AP using Ideal rate adaptation
37// algorithm:
38// ./ns3 run "wifi-backward-compatibility --apVersion=80211a --staVersion=80211ac --staRaa=Ideal"
39
40using namespace ns3;
41
42NS_LOG_COMPONENT_DEFINE("wifi-backward-compatibility");
43
44/**
45 * Convert a string (e.g., "80211a") to a pair {WifiStandard, WifiPhyBand}
46 *
47 * \param version The WiFi standard version.
48 * \return a pair of WifiStandard, WifiPhyBand
49 */
50std::pair<WifiStandard, WifiPhyBand>
52{
55 if (version == "80211a")
56 {
57 standard = WIFI_STANDARD_80211a;
58 band = WIFI_PHY_BAND_5GHZ;
59 }
60 else if (version == "80211b")
61 {
62 standard = WIFI_STANDARD_80211b;
64 }
65 else if (version == "80211g")
66 {
67 standard = WIFI_STANDARD_80211g;
69 }
70 else if (version == "80211p")
71 {
72 standard = WIFI_STANDARD_80211p;
73 band = WIFI_PHY_BAND_5GHZ;
74 }
75 else if (version == "80211n_2_4GHZ")
76 {
77 standard = WIFI_STANDARD_80211n;
79 }
80 else if (version == "80211n_5GHZ")
81 {
82 standard = WIFI_STANDARD_80211n;
83 band = WIFI_PHY_BAND_5GHZ;
84 }
85 else if (version == "80211ac")
86 {
87 standard = WIFI_STANDARD_80211ac;
88 band = WIFI_PHY_BAND_5GHZ;
89 }
90 else if (version == "80211ax_2_4GHZ")
91 {
92 standard = WIFI_STANDARD_80211ax;
94 }
95 else if (version == "80211ax_5GHZ")
96 {
97 standard = WIFI_STANDARD_80211ax;
98 band = WIFI_PHY_BAND_5GHZ;
99 }
100 return {standard, band};
101}
102
103int
104main(int argc, char* argv[])
105{
106 uint32_t payloadSize{1472}; // bytes
107 Time simulationTime{"10s"};
108 std::string apVersion{"80211a"};
109 std::string staVersion{"80211n_5GHZ"};
110 std::string apRaa{"Minstrel"};
111 std::string staRaa{"MinstrelHt"};
112 bool apHasTraffic{false};
113 bool staHasTraffic{true};
114
115 CommandLine cmd(__FILE__);
116 cmd.AddValue("simulationTime", "Simulation time", simulationTime);
117 cmd.AddValue("apVersion",
118 "The standard version used by the AP: 80211a, 80211b, 80211g, 80211p, "
119 "80211n_2_4GHZ, 80211n_5GHZ, 80211ac, 80211ax_2_4GHZ or 80211ax_5GHZ",
120 apVersion);
121 cmd.AddValue("staVersion",
122 "The standard version used by the station: 80211a, 80211b, 80211g, 80211_10MHZ, "
123 "80211_5MHZ, 80211n_2_4GHZ, 80211n_5GHZ, 80211ac, 80211ax_2_4GHZ or 80211ax_5GHZ",
124 staVersion);
125 cmd.AddValue("apRaa", "Rate adaptation algorithm used by the AP", apRaa);
126 cmd.AddValue("staRaa", "Rate adaptation algorithm used by the station", staRaa);
127 cmd.AddValue("apHasTraffic", "Enable/disable traffic on the AP", apHasTraffic);
128 cmd.AddValue("staHasTraffic", "Enable/disable traffic on the station", staHasTraffic);
129 cmd.Parse(argc, argv);
130
131 NodeContainer wifiStaNode;
132 wifiStaNode.Create(1);
134 wifiApNode.Create(1);
135
138 phy.SetChannel(channel.Create());
139
142 Ssid ssid = Ssid("ns3");
145 ';'>
146 channelValue;
147
148 const auto& [staStandard, staBand] = ConvertStringToStandardAndBand(staVersion);
149 wifi.SetStandard(staStandard);
150 wifi.SetRemoteStationManager("ns3::" + staRaa + "WifiManager");
151
152 mac.SetType("ns3::StaWifiMac", "QosSupported", BooleanValue(true), "Ssid", SsidValue(ssid));
153
154 // Workaround needed as long as we do not fully support channel bonding
155 uint16_t width = (staVersion == "80211ac" ? 20 : 0);
156 channelValue.Set(WifiPhy::ChannelSegments{{0, width, staBand, 0}});
157 phy.Set("ChannelSettings", channelValue);
158
159 NetDeviceContainer staDevice;
160 staDevice = wifi.Install(phy, mac, wifiStaNode);
161
162 const auto& [apStandard, apBand] = ConvertStringToStandardAndBand(apVersion);
163 wifi.SetStandard(apStandard);
164 wifi.SetRemoteStationManager("ns3::" + apRaa + "WifiManager");
165
166 mac.SetType("ns3::ApWifiMac", "QosSupported", BooleanValue(true), "Ssid", SsidValue(ssid));
167
168 // Workaround needed as long as we do not fully support channel bonding
169 width = (apVersion == "80211ac" ? 20 : 0);
170 channelValue.Set(WifiPhy::ChannelSegments{{0, width, apBand, 0}});
171 phy.Set("ChannelSettings", channelValue);
172
173 NetDeviceContainer apDevice;
174 apDevice = wifi.Install(phy, mac, wifiApNode);
175
178 positionAlloc->Add(Vector(0.0, 0.0, 0.0));
179 positionAlloc->Add(Vector(5.0, 0.0, 0.0));
180 mobility.SetPositionAllocator(positionAlloc);
181 mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
182 mobility.Install(wifiApNode);
183 mobility.Install(wifiStaNode);
184
186 stack.Install(wifiApNode);
187 stack.Install(wifiStaNode);
188
190 address.SetBase("192.168.1.0", "255.255.255.0");
191 Ipv4InterfaceContainer staNodeInterface;
192 Ipv4InterfaceContainer apNodeInterface;
193
194 staNodeInterface = address.Assign(staDevice);
195 apNodeInterface = address.Assign(apDevice);
196
197 UdpServerHelper apServer(9);
198 ApplicationContainer apServerApp = apServer.Install(wifiApNode.Get(0));
199 apServerApp.Start(Seconds(0.0));
200 apServerApp.Stop(simulationTime + Seconds(1.0));
201
202 UdpServerHelper staServer(5001);
203 ApplicationContainer staServerApp = staServer.Install(wifiStaNode.Get(0));
204 staServerApp.Start(Seconds(0.0));
205 staServerApp.Stop(simulationTime + Seconds(1.0));
206
207 if (apHasTraffic)
208 {
209 UdpClientHelper apClient(staNodeInterface.GetAddress(0), 5001);
210 apClient.SetAttribute("MaxPackets", UintegerValue(4294967295U));
211 apClient.SetAttribute("Interval", TimeValue(Time("0.00001"))); // packets/s
212 apClient.SetAttribute("PacketSize", UintegerValue(payloadSize)); // bytes
213 ApplicationContainer apClientApp = apClient.Install(wifiApNode.Get(0));
214 apClientApp.Start(Seconds(1.0));
215 apClientApp.Stop(simulationTime + Seconds(1.0));
216 }
217
218 if (staHasTraffic)
219 {
220 UdpClientHelper staClient(apNodeInterface.GetAddress(0), 9);
221 staClient.SetAttribute("MaxPackets", UintegerValue(4294967295U));
222 staClient.SetAttribute("Interval", TimeValue(Time("0.00001"))); // packets/s
223 staClient.SetAttribute("PacketSize", UintegerValue(payloadSize)); // bytes
224 ApplicationContainer staClientApp = staClient.Install(wifiStaNode.Get(0));
225 staClientApp.Start(Seconds(1.0));
226 staClientApp.Stop(simulationTime + Seconds(1.0));
227 }
228
230
231 Simulator::Stop(simulationTime + Seconds(1.0));
233
234 double rxBytes;
235 double throughput;
236 bool error = false;
237 if (apHasTraffic)
238 {
239 rxBytes = payloadSize * DynamicCast<UdpServer>(staServerApp.Get(0))->GetReceived();
240 throughput = (rxBytes * 8) / simulationTime.GetMicroSeconds(); // Mbit/s
241 std::cout << "AP Throughput: " << throughput << " Mbit/s" << std::endl;
242 if (throughput == 0)
243 {
244 error = true;
245 }
246 }
247 if (staHasTraffic)
248 {
249 rxBytes = payloadSize * DynamicCast<UdpServer>(apServerApp.Get(0))->GetReceived();
250 throughput = (rxBytes * 8) / simulationTime.GetMicroSeconds(); // Mbit/s
251 std::cout << "STA Throughput: " << throughput << " Mbit/s" << std::endl;
252 if (throughput == 0)
253 {
254 error = true;
255 }
256 }
257
259
260 if (error)
261 {
262 NS_LOG_ERROR("No traffic received!");
263 exit(1);
264 }
265
266 return 0;
267}
holds a vector of ns3::Application pointers.
void Start(Time start) const
Start all of the Applications in this container at the start time given as a parameter.
Ptr< Application > Get(uint32_t i) const
Get the Ptr<Application> stored in this container at a given index.
void Stop(Time stop) const
Arrange for all of the Applications in this container to Stop() at the Time given as a parameter.
A container for one type of attribute.
void Set(const T &c)
Copy items from container c.
Parse command-line arguments.
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
static void PopulateRoutingTables()
Build a routing database and initialize the routing tables of the nodes in the simulation.
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.
static void Destroy()
Execute the events scheduled with ScheduleDestroy().
Definition simulator.cc:131
static void Run()
Run the simulation.
Definition simulator.cc:167
static void Stop()
Tell the Simulator the calling event should be the last one executed.
Definition simulator.cc:175
The IEEE 802.11 SSID Information Element.
Definition ssid.h:25
Simulation virtual time values and global simulation resolution.
Definition nstime.h:94
AttributeValue implementation for Tuple.
Definition tuple.h:67
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:34
helps to create WifiNetDevice objects
create MAC layers for a ns3::WifiNetDevice.
std::vector< ChannelTuple > ChannelSegments
segments identifying an operating channel
Definition wifi-phy.h:925
manage and create wifi channel objects for the YANS model.
static YansWifiChannelHelper Default()
Create a channel helper in a default working state.
Make it easy to create and manage PHY objects for the YANS model.
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
Definition log.h:243
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition log.h:191
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition object.h:619
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition nstime.h:1308
WifiStandard
Identifies the IEEE 802.11 specifications that a Wifi device can be configured to use.
WifiPhyBand
Identifies the PHY band.
@ WIFI_STANDARD_80211a
@ WIFI_STANDARD_80211p
@ WIFI_STANDARD_80211n
@ WIFI_STANDARD_80211g
@ WIFI_STANDARD_80211ax
@ WIFI_STANDARD_80211ac
@ WIFI_STANDARD_80211b
@ WIFI_PHY_BAND_2_4GHZ
The 2.4 GHz band.
@ WIFI_PHY_BAND_5GHZ
The 5 GHz band.
address
Definition first.py:36
stack
Definition first.py:33
Every class exported by the ns3 library is enclosed in the ns3 namespace.
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
Definition ptr.h:580
ssid
Definition third.py:82
channel
Definition third.py:77
mac
Definition third.py:81
wifi
Definition third.py:84
wifiApNode
Definition third.py:75
mobility
Definition third.py:92
phy
Definition third.py:78
std::ofstream throughput
std::pair< WifiStandard, WifiPhyBand > ConvertStringToStandardAndBand(std::string version)
Convert a string (e.g., "80211a") to a pair {WifiStandard, WifiPhyBand}.