A Discrete-Event Network Simulator
API
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wifi-he-network.cc
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1/*
2 * Copyright (c) 2016 SEBASTIEN DERONNE
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/double.h"
14#include "ns3/enum.h"
15#include "ns3/he-phy.h"
16#include "ns3/internet-stack-helper.h"
17#include "ns3/ipv4-address-helper.h"
18#include "ns3/ipv4-global-routing-helper.h"
19#include "ns3/log.h"
20#include "ns3/mobility-helper.h"
21#include "ns3/multi-model-spectrum-channel.h"
22#include "ns3/neighbor-cache-helper.h"
23#include "ns3/on-off-helper.h"
24#include "ns3/packet-sink-helper.h"
25#include "ns3/packet-sink.h"
26#include "ns3/spectrum-wifi-helper.h"
27#include "ns3/ssid.h"
28#include "ns3/string.h"
29#include "ns3/udp-client-server-helper.h"
30#include "ns3/udp-server.h"
31#include "ns3/uinteger.h"
32#include "ns3/wifi-acknowledgment.h"
33#include "ns3/wifi-static-setup-helper.h"
34#include "ns3/yans-wifi-channel.h"
35#include "ns3/yans-wifi-helper.h"
36
37#include <algorithm>
38#include <functional>
39
40// This is a simple example in order to show how to configure an IEEE 802.11ax Wi-Fi network.
41//
42// It outputs the UDP or TCP goodput for every HE MCS value, which depends on the MCS value (0 to
43// 11), the channel width (20, 40, 80 or 160 MHz) and the guard interval (800ns, 1600ns or 3200ns).
44// The PHY bitrate is constant over all the simulation run. The user can also specify the distance
45// between the access point and the station: the larger the distance the smaller the goodput.
46//
47// The simulation assumes a configurable number of stations in an infrastructure network:
48//
49// STA AP
50// * *
51// | |
52// n1 n2
53//
54// Packets in this simulation belong to BestEffort Access Class (AC_BE).
55// By selecting an acknowledgment sequence for DL MU PPDUs, it is possible to aggregate a
56// Round Robin scheduler to the AP, so that DL MU PPDUs are sent by the AP via DL OFDMA.
57
58using namespace ns3;
59
60NS_LOG_COMPONENT_DEFINE("he-wifi-network");
61
62int
63main(int argc, char* argv[])
64{
65 bool udp{true};
66 bool downlink{true};
67 bool useRts{false};
68 bool use80Plus80{false};
69 bool useExtendedBlockAck{false};
70 Time simulationTime{"10s"};
71 bool staticSetup{true};
72 auto clientAppStartTime = Seconds(1);
73 meter_u distance{1.0};
74 double frequency{5}; // whether 2.4, 5 or 6 GHz
75 std::size_t nStations{1};
76 std::string dlAckSeqType{"NO-OFDMA"};
77 bool enableUlOfdma{false};
78 bool enableBsrp{false};
79 std::string mcsStr;
80 std::vector<uint64_t> mcsValues;
81 int channelWidth{-1}; // in MHz, -1 indicates an unset value
82 int guardInterval{-1}; // in nanoseconds, -1 indicates an unset value
83 uint32_t payloadSize =
84 700; // must fit in the max TX duration when transmitting at MCS 0 over an RU of 26 tones
85 std::string phyModel{"Yans"};
86 double minExpectedThroughput{0.0};
87 double maxExpectedThroughput{0.0};
88 Time accessReqInterval{0};
89
90 CommandLine cmd(__FILE__);
91 cmd.AddValue("staticSetup",
92 "Whether devices are configured using the static setup helper",
93 staticSetup);
94 cmd.AddValue("frequency",
95 "Whether working in the 2.4, 5 or 6 GHz band (other values gets rejected)",
96 frequency);
97 cmd.AddValue("distance",
98 "Distance in meters between the station and the access point",
99 distance);
100 cmd.AddValue("simulationTime", "Simulation time", simulationTime);
101 cmd.AddValue("udp", "UDP if set to 1, TCP otherwise", udp);
102 cmd.AddValue("downlink",
103 "Generate downlink flows if set to 1, uplink flows otherwise",
104 downlink);
105 cmd.AddValue("useRts", "Enable/disable RTS/CTS", useRts);
106 cmd.AddValue("use80Plus80", "Enable/disable use of 80+80 MHz", use80Plus80);
107 cmd.AddValue("useExtendedBlockAck", "Enable/disable use of extended BACK", useExtendedBlockAck);
108 cmd.AddValue("nStations", "Number of non-AP HE stations", nStations);
109 cmd.AddValue("dlAckType",
110 "Ack sequence type for DL OFDMA (NO-OFDMA, ACK-SU-FORMAT, MU-BAR, AGGR-MU-BAR)",
111 dlAckSeqType);
112 cmd.AddValue("enableUlOfdma",
113 "Enable UL OFDMA (useful if DL OFDMA is enabled and TCP is used)",
114 enableUlOfdma);
115 cmd.AddValue("enableBsrp",
116 "Enable BSRP (useful if DL and UL OFDMA are enabled and TCP is used)",
117 enableBsrp);
118 cmd.AddValue(
119 "muSchedAccessReqInterval",
120 "Duration of the interval between two requests for channel access made by the MU scheduler",
121 accessReqInterval);
122 cmd.AddValue(
123 "mcs",
124 "list of comma separated MCS values to test; if unset, all MCS values (0-11) are tested",
125 mcsStr);
126 cmd.AddValue("channelWidth",
127 "if set, limit testing to a specific channel width expressed in MHz (20, 40, 80 "
128 "or 160 MHz)",
129 channelWidth);
130 cmd.AddValue("guardInterval",
131 "if set, limit testing to a specific guard interval duration expressed in "
132 "nanoseconds (800, 1600 or 3200 ns)",
133 guardInterval);
134 cmd.AddValue("payloadSize", "The application payload size in bytes", payloadSize);
135 cmd.AddValue("phyModel",
136 "PHY model to use when OFDMA is disabled (Yans or Spectrum). If 80+80 MHz or "
137 "OFDMA is enabled "
138 "then Spectrum is automatically selected",
139 phyModel);
140 cmd.AddValue("minExpectedThroughput",
141 "if set, simulation fails if the lowest throughput is below this value",
142 minExpectedThroughput);
143 cmd.AddValue("maxExpectedThroughput",
144 "if set, simulation fails if the highest throughput is above this value",
145 maxExpectedThroughput);
146 cmd.Parse(argc, argv);
147
148 if (useRts)
149 {
150 Config::SetDefault("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue("0"));
151 Config::SetDefault("ns3::WifiDefaultProtectionManager::EnableMuRts", BooleanValue(true));
152 }
153
154 if (dlAckSeqType == "ACK-SU-FORMAT")
155 {
156 Config::SetDefault("ns3::WifiDefaultAckManager::DlMuAckSequenceType",
158 }
159 else if (dlAckSeqType == "MU-BAR")
160 {
161 Config::SetDefault("ns3::WifiDefaultAckManager::DlMuAckSequenceType",
163 }
164 else if (dlAckSeqType == "AGGR-MU-BAR")
165 {
166 Config::SetDefault("ns3::WifiDefaultAckManager::DlMuAckSequenceType",
168 }
169 else if (dlAckSeqType != "NO-OFDMA")
170 {
171 NS_ABORT_MSG("Invalid DL ack sequence type (must be NO-OFDMA, ACK-SU-FORMAT, MU-BAR or "
172 "AGGR-MU-BAR)");
173 }
174
175 if (phyModel != "Yans" && phyModel != "Spectrum")
176 {
177 NS_ABORT_MSG("Invalid PHY model (must be Yans or Spectrum)");
178 }
179 if (use80Plus80 || (dlAckSeqType != "NO-OFDMA"))
180 {
181 // SpectrumWifiPhy is required for 80+80 MHz and OFDMA
182 phyModel = "Spectrum";
183 }
184
185 double prevThroughput[12] = {0};
186
187 std::cout << "MCS value"
188 << "\t\t"
189 << "Channel width"
190 << "\t\t"
191 << "GI"
192 << "\t\t\t"
193 << "Throughput" << '\n';
194 uint8_t minMcs = 0;
195 uint8_t maxMcs = 11;
196
197 if (mcsStr.empty())
198 {
199 for (uint8_t mcs = minMcs; mcs <= maxMcs; ++mcs)
200 {
201 mcsValues.push_back(mcs);
202 }
203 }
204 else
205 {
206 AttributeContainerValue<UintegerValue, ',', std::vector> attr;
208 checker->SetItemChecker(MakeUintegerChecker<uint8_t>());
209 attr.DeserializeFromString(mcsStr, checker);
210 mcsValues = attr.Get();
211 std::sort(mcsValues.begin(), mcsValues.end());
212 }
213
214 int minChannelWidth = 20;
215 int maxChannelWidth = frequency == 2.4 ? 40 : 160;
216 if ((channelWidth != -1) &&
217 ((channelWidth < minChannelWidth) || (channelWidth > maxChannelWidth)))
218 {
219 NS_FATAL_ERROR("Invalid channel width: " << channelWidth << " MHz");
220 }
221 if (channelWidth >= minChannelWidth && channelWidth <= maxChannelWidth)
222 {
223 minChannelWidth = channelWidth;
224 maxChannelWidth = channelWidth;
225 }
226 int minGi = enableUlOfdma ? 1600 : 800;
227 int maxGi = 3200;
228 if (guardInterval >= minGi && guardInterval <= maxGi)
229 {
230 minGi = guardInterval;
231 maxGi = guardInterval;
232 }
233
234 for (const auto mcs : mcsValues)
235 {
236 uint8_t index = 0;
237 double previous = 0;
238 for (int width = minChannelWidth; width <= maxChannelWidth; width *= 2) // MHz
239 {
240 const auto is80Plus80 = (use80Plus80 && (width == 160));
241 const std::string widthStr = is80Plus80 ? "80+80" : std::to_string(width);
242 const auto segmentWidthStr = is80Plus80 ? "80" : widthStr;
243 for (int gi = maxGi; gi >= minGi; gi /= 2) // Nanoseconds
244 {
245 if (!udp)
246 {
247 Config::SetDefault("ns3::TcpSocket::SegmentSize", UintegerValue(payloadSize));
248 }
249
251 wifiStaNodes.Create(nStations);
253 wifiApNode.Create(1);
254
255 NetDeviceContainer apDevice;
259 std::string channelStr("{0, " + segmentWidthStr + ", ");
260 StringValue ctrlRate;
261 auto nonHtRefRateMbps = HePhy::GetNonHtReferenceRate(mcs) / 1e6;
262
263 std::ostringstream ossDataMode;
264 ossDataMode << "HeMcs" << mcs;
265
266 if (frequency == 6)
267 {
268 ctrlRate = StringValue(ossDataMode.str());
269 channelStr += "BAND_6GHZ, 0}";
270 Config::SetDefault("ns3::LogDistancePropagationLossModel::ReferenceLoss",
271 DoubleValue(48));
272 }
273 else if (frequency == 5)
274 {
275 std::ostringstream ossControlMode;
276 ossControlMode << "OfdmRate" << nonHtRefRateMbps << "Mbps";
277 ctrlRate = StringValue(ossControlMode.str());
278 channelStr += "BAND_5GHZ, 0}";
279 }
280 else if (frequency == 2.4)
281 {
282 std::ostringstream ossControlMode;
283 ossControlMode << "ErpOfdmRate" << nonHtRefRateMbps << "Mbps";
284 ctrlRate = StringValue(ossControlMode.str());
285 channelStr += "BAND_2_4GHZ, 0}";
286 Config::SetDefault("ns3::LogDistancePropagationLossModel::ReferenceLoss",
287 DoubleValue(40));
288 }
289 else
290 {
291 NS_FATAL_ERROR("Wrong frequency value!");
292 }
293
294 if (is80Plus80)
295 {
296 channelStr += std::string(";") + channelStr;
297 }
298
299 wifi.SetStandard(WIFI_STANDARD_80211ax);
300 wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
301 "DataMode",
302 StringValue(ossDataMode.str()),
303 "ControlMode",
304 ctrlRate);
305 // Set guard interval
306 wifi.ConfigHeOptions("GuardInterval", TimeValue(NanoSeconds(gi)));
307
308 Ssid ssid = Ssid("ns3-80211ax");
309
310 if (phyModel == "Spectrum")
311 {
312 auto spectrumChannel = CreateObject<MultiModelSpectrumChannel>();
313
315 spectrumChannel->AddPropagationLossModel(lossModel);
316
318 phy.SetPcapDataLinkType(WifiPhyHelper::DLT_IEEE802_11_RADIO);
319 phy.SetChannel(spectrumChannel);
320
321 mac.SetType("ns3::StaWifiMac",
322 "Ssid",
323 SsidValue(ssid),
324 "MpduBufferSize",
325 UintegerValue(useExtendedBlockAck ? 256 : 64));
326 phy.Set("ChannelSettings", StringValue(channelStr));
327 staDevices = wifi.Install(phy, mac, wifiStaNodes);
328
329 if (dlAckSeqType != "NO-OFDMA")
330 {
331 mac.SetMultiUserScheduler("ns3::RrMultiUserScheduler",
332 "EnableUlOfdma",
333 BooleanValue(enableUlOfdma),
334 "EnableBsrp",
335 BooleanValue(enableBsrp),
336 "AccessReqInterval",
337 TimeValue(accessReqInterval));
338 }
339 mac.SetType("ns3::ApWifiMac",
340 "EnableBeaconJitter",
341 BooleanValue(false),
342 "BeaconGeneration",
343 BooleanValue(!staticSetup),
344 "Ssid",
345 SsidValue(ssid));
346 apDevice = wifi.Install(phy, mac, wifiApNode);
347 }
348 else
349 {
352 phy.SetPcapDataLinkType(WifiPhyHelper::DLT_IEEE802_11_RADIO);
353 phy.SetChannel(channel.Create());
354
355 mac.SetType("ns3::StaWifiMac",
356 "Ssid",
357 SsidValue(ssid),
358 "MpduBufferSize",
359 UintegerValue(useExtendedBlockAck ? 256 : 64));
360 phy.Set("ChannelSettings", StringValue(channelStr));
361 staDevices = wifi.Install(phy, mac, wifiStaNodes);
362
363 mac.SetType("ns3::ApWifiMac",
364 "EnableBeaconJitter",
365 BooleanValue(false),
366 "Ssid",
367 SsidValue(ssid));
368 apDevice = wifi.Install(phy, mac, wifiApNode);
369 }
370
371 int64_t streamNumber = 150;
372 streamNumber += WifiHelper::AssignStreams(apDevice, streamNumber);
373 streamNumber += WifiHelper::AssignStreams(staDevices, streamNumber);
374
375 // mobility.
378
379 positionAlloc->Add(Vector(0.0, 0.0, 0.0));
380 positionAlloc->Add(Vector(distance, 0.0, 0.0));
381 mobility.SetPositionAllocator(positionAlloc);
382
383 mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
384
385 mobility.Install(wifiApNode);
386 mobility.Install(wifiStaNodes);
387
388 if (staticSetup)
389 {
390 /* static setup of association and BA agreements */
391 auto apDev = DynamicCast<WifiNetDevice>(apDevice.Get(0));
392 NS_ASSERT(apDev);
394 WifiStaticSetupHelper::SetStaticBlockAck(apDev, staDevices, {0});
395 clientAppStartTime = MilliSeconds(1);
396 }
397
398 /* Internet stack*/
400 stack.Install(wifiApNode);
401 stack.Install(wifiStaNodes);
402 streamNumber += stack.AssignStreams(wifiApNode, streamNumber);
403 streamNumber += stack.AssignStreams(wifiStaNodes, streamNumber);
404
406 address.SetBase("192.168.1.0", "255.255.255.0");
407 Ipv4InterfaceContainer staNodeInterfaces;
408 Ipv4InterfaceContainer apNodeInterface;
409
410 staNodeInterfaces = address.Assign(staDevices);
411 apNodeInterface = address.Assign(apDevice);
412
413 if (staticSetup)
414 {
415 /* static setup of ARP cache */
416 NeighborCacheHelper nbCache;
417 nbCache.PopulateNeighborCache();
418 }
419
420 /* Setting applications */
421 ApplicationContainer serverApp;
422 auto serverNodes = downlink ? std::ref(wifiStaNodes) : std::ref(wifiApNode);
424 NodeContainer clientNodes;
425 for (std::size_t i = 0; i < nStations; i++)
426 {
427 serverInterfaces.Add(downlink ? staNodeInterfaces.Get(i)
428 : apNodeInterface.Get(0));
429 clientNodes.Add(downlink ? wifiApNode.Get(0) : wifiStaNodes.Get(i));
430 }
431
432 const auto maxLoad =
433 HePhy::GetDataRate(mcs, MHz_u{static_cast<double>(width)}, NanoSeconds(gi), 1) /
434 nStations;
435 if (udp)
436 {
437 // UDP flow
438 uint16_t port = 9;
440 serverApp = server.Install(serverNodes.get());
441 streamNumber += server.AssignStreams(serverNodes.get(), streamNumber);
442
443 serverApp.Start(Seconds(0));
444 serverApp.Stop(simulationTime + clientAppStartTime);
445 const auto packetInterval = payloadSize * 8.0 / maxLoad;
446
447 for (std::size_t i = 0; i < nStations; i++)
448 {
450 client.SetAttribute("MaxPackets", UintegerValue(4294967295U));
451 client.SetAttribute("Interval", TimeValue(Seconds(packetInterval)));
452 client.SetAttribute("PacketSize", UintegerValue(payloadSize));
453 ApplicationContainer clientApp = client.Install(clientNodes.Get(i));
454 streamNumber += client.AssignStreams(clientNodes.Get(i), streamNumber);
455
456 clientApp.Start(clientAppStartTime);
457 clientApp.Stop(simulationTime + clientAppStartTime);
458 }
459 }
460 else
461 {
462 // TCP flow
463 uint16_t port = 50000;
465 PacketSinkHelper packetSinkHelper("ns3::TcpSocketFactory", localAddress);
466 serverApp = packetSinkHelper.Install(serverNodes.get());
467 streamNumber += packetSinkHelper.AssignStreams(serverNodes.get(), streamNumber);
468
469 serverApp.Start(Seconds(0));
470 serverApp.Stop(simulationTime + clientAppStartTime);
471
472 for (std::size_t i = 0; i < nStations; i++)
473 {
474 OnOffHelper onoff("ns3::TcpSocketFactory", Ipv4Address::GetAny());
475 onoff.SetAttribute("OnTime",
476 StringValue("ns3::ConstantRandomVariable[Constant=1]"));
477 onoff.SetAttribute("OffTime",
478 StringValue("ns3::ConstantRandomVariable[Constant=0]"));
479 onoff.SetAttribute("PacketSize", UintegerValue(payloadSize));
480 onoff.SetAttribute("DataRate", DataRateValue(maxLoad));
482 InetSocketAddress(serverInterfaces.GetAddress(i), port));
483 onoff.SetAttribute("Remote", remoteAddress);
484 ApplicationContainer clientApp = onoff.Install(clientNodes.Get(i));
485 streamNumber += onoff.AssignStreams(clientNodes.Get(i), streamNumber);
486
487 clientApp.Start(clientAppStartTime);
488 clientApp.Stop(simulationTime + clientAppStartTime);
489 }
490 }
491
493
494 Simulator::Stop(simulationTime + clientAppStartTime);
496
497 // When multiple stations are used, there are chances that association requests
498 // collide and hence the throughput may be lower than expected. Therefore, we relax
499 // the check that the throughput cannot decrease by introducing a scaling factor (or
500 // tolerance)
501 auto tolerance = 0.10;
502 auto rxBytes = 0.0;
503 if (udp)
504 {
505 for (uint32_t i = 0; i < serverApp.GetN(); i++)
506 {
507 rxBytes +=
508 payloadSize * DynamicCast<UdpServer>(serverApp.Get(i))->GetReceived();
509 }
510 }
511 else
512 {
513 for (uint32_t i = 0; i < serverApp.GetN(); i++)
514 {
515 rxBytes += DynamicCast<PacketSink>(serverApp.Get(i))->GetTotalRx();
516 }
517 }
518 auto throughput = (rxBytes * 8) / simulationTime.GetMicroSeconds(); // Mbit/s
519
521
522 std::cout << +mcs << "\t\t\t" << widthStr << " MHz\t\t"
523 << (widthStr.size() > 3 ? "" : "\t") << gi << " ns\t\t\t" << throughput
524 << " Mbit/s" << std::endl;
525
526 // test first element
527 if (mcs == minMcs && width == 20 && gi == 3200)
528 {
529 if (throughput * (1 + tolerance) < minExpectedThroughput)
530 {
531 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
532 exit(1);
533 }
534 }
535 // test last element
536 if (mcs == maxMcs && width == maxChannelWidth && gi == 800)
537 {
538 if (maxExpectedThroughput > 0 &&
539 throughput > maxExpectedThroughput * (1 + tolerance))
540 {
541 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
542 exit(1);
543 }
544 }
545 // Skip comparisons with previous cases if more than one stations are present
546 // because, e.g., random collisions in the establishment of Block Ack agreements
547 // have an impact on throughput
548 if (nStations == 1)
549 {
550 // test previous throughput is smaller (for the same mcs)
551 if (throughput * (1 + tolerance) > previous)
552 {
553 previous = throughput;
554 }
555 else if (throughput > 0)
556 {
557 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
558 exit(1);
559 }
560 // test previous throughput is smaller (for the same channel width and GI)
561 if (throughput * (1 + tolerance) > prevThroughput[index])
562 {
563 prevThroughput[index] = throughput;
564 }
565 else if (throughput > 0)
566 {
567 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
568 exit(1);
569 }
570 }
571 index++;
572 }
573 }
574 }
575 return 0;
576}
a polymophic address class
Definition address.h:90
AttributeValue implementation for Address.
Definition address.h:275
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.
uint32_t GetN() const
Get the number of Ptr<Application> stored in this container.
A container for one type of attribute.
AttributeValue implementation for Boolean.
Definition boolean.h:26
Parse command-line arguments.
AttributeValue implementation for DataRate.
Definition data-rate.h:285
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition double.h:31
Hold variables of type enum.
Definition enum.h:52
static uint64_t GetDataRate(uint8_t mcsValue, MHz_u channelWidth, Time guardInterval, uint8_t nss)
Return the data rate corresponding to the supplied HE MCS index, channel width, guard interval,...
Definition he-phy.cc:1685
static uint64_t GetNonHtReferenceRate(uint8_t mcsValue)
Calculate the rate in bps of the non-HT Reference Rate corresponding to the supplied HE MCS index.
Definition he-phy.cc:1729
an Inet address class
aggregate IP/TCP/UDP functionality to existing Nodes.
A helper class to make life easier while doing simple IPv4 address assignment in scripts.
static Ipv4Address GetAny()
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.
std::pair< Ptr< Ipv4 >, uint32_t > Get(uint32_t i) const
Get the std::pair of an Ptr<Ipv4> and interface stored at the location specified by the index.
Helper class used to assign positions and mobility models to nodes.
A helper class to populate neighbor cache.
void PopulateNeighborCache()
Populate neighbor ARP and NDISC caches for all devices.
holds a vector of ns3::NetDevice pointers
Ptr< NetDevice > Get(uint32_t i) const
Get the Ptr<NetDevice> stored in this container at a given index.
keep track of a set of node pointers.
void Add(const NodeContainer &nc)
Append the contents of another NodeContainer to the end of this container.
Ptr< Node > Get(uint32_t i) const
Get the Ptr<Node> stored in this container at a given index.
A helper to make it easier to instantiate an ns3::OnOffApplication on a set of nodes.
A helper to make it easier to instantiate an ns3::PacketSinkApplication on a set of nodes.
Smart pointer class similar to boost::intrusive_ptr.
Definition ptr.h:67
static EventId Schedule(const Time &delay, FUNC f, Ts &&... args)
Schedule an event to expire after delay.
Definition simulator.h:561
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
Make it easy to create and manage PHY objects for the spectrum model.
The IEEE 802.11 SSID Information Element.
Definition ssid.h:25
AttributeValue implementation for Ssid.
Definition ssid.h:85
Hold variables of type string.
Definition string.h:45
Simulation virtual time values and global simulation resolution.
Definition nstime.h:96
AttributeValue implementation for Time.
Definition nstime.h:1456
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
static int64_t AssignStreams(NetDeviceContainer c, int64_t stream)
Assign a fixed random variable stream number to the random variables used by the PHY and MAC aspects ...
create MAC layers for a ns3::WifiNetDevice.
@ DLT_IEEE802_11_RADIO
Include Radiotap link layer information.
static void SetStaticAssociation(Ptr< WifiNetDevice > bssDev, const NetDeviceContainer &clientDevs)
Bypass static capabilities exchange for input devices.
static void SetStaticBlockAck(Ptr< WifiNetDevice > apDev, const NetDeviceContainer &clientDevs, const std::set< tid_t > &tids, std::optional< Mac48Address > gcrGroupAddr=std::nullopt)
Bypass ADDBA Request-Response exchange sequence between AP and STAs for given TIDs.
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.
uint16_t port
Definition dsdv-manet.cc:33
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition assert.h:55
Ptr< AttributeChecker > MakeAttributeContainerChecker()
Make uninitialized AttributeContainerChecker using explicit types.
Ptr< const AttributeChecker > MakeUintegerChecker()
Definition uinteger.h:85
void SetDefault(std::string name, const AttributeValue &value)
Definition config.cc:886
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
#define NS_ABORT_MSG(msg)
Unconditional abnormal program termination with a message.
Definition abort.h:38
#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 NanoSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition nstime.h:1405
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition nstime.h:1369
Time MilliSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition nstime.h:1381
@ WIFI_STANDARD_80211ax
address
Definition first.py:36
stack
Definition first.py:33
Every class exported by the ns3 library is enclosed in the ns3 namespace.
double MHz_u
MHz weak type.
Definition wifi-units.h:31
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
Definition ptr.h:585
double meter_u
meter weak type
Definition wifi-units.h:32
STL namespace.
staDevices
Definition third.py:87
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
wifiStaNodes
Definition third.py:73
phy
Definition third.py:78
std::ofstream throughput