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/on-off-helper.h"
23#include "ns3/packet-sink-helper.h"
24#include "ns3/packet-sink.h"
25#include "ns3/spectrum-wifi-helper.h"
26#include "ns3/ssid.h"
27#include "ns3/string.h"
28#include "ns3/udp-client-server-helper.h"
29#include "ns3/udp-server.h"
30#include "ns3/uinteger.h"
31#include "ns3/wifi-acknowledgment.h"
32#include "ns3/yans-wifi-channel.h"
33#include "ns3/yans-wifi-helper.h"
34
35#include <algorithm>
36#include <functional>
37
38// This is a simple example in order to show how to configure an IEEE 802.11ax Wi-Fi network.
39//
40// It outputs the UDP or TCP goodput for every HE MCS value, which depends on the MCS value (0 to
41// 11), the channel width (20, 40, 80 or 160 MHz) and the guard interval (800ns, 1600ns or 3200ns).
42// The PHY bitrate is constant over all the simulation run. The user can also specify the distance
43// between the access point and the station: the larger the distance the smaller the goodput.
44//
45// The simulation assumes a configurable number of stations in an infrastructure network:
46//
47// STA AP
48// * *
49// | |
50// n1 n2
51//
52// Packets in this simulation belong to BestEffort Access Class (AC_BE).
53// By selecting an acknowledgment sequence for DL MU PPDUs, it is possible to aggregate a
54// Round Robin scheduler to the AP, so that DL MU PPDUs are sent by the AP via DL OFDMA.
55
56using namespace ns3;
57
58NS_LOG_COMPONENT_DEFINE("he-wifi-network");
59
60int
61main(int argc, char* argv[])
62{
63 bool udp{true};
64 bool downlink{true};
65 bool useRts{false};
66 bool use80Plus80{false};
67 bool useExtendedBlockAck{false};
68 Time simulationTime{"10s"};
69 meter_u distance{1.0};
70 double frequency{5}; // whether 2.4, 5 or 6 GHz
71 std::size_t nStations{1};
72 std::string dlAckSeqType{"NO-OFDMA"};
73 bool enableUlOfdma{false};
74 bool enableBsrp{false};
75 std::string mcsStr;
76 std::vector<uint64_t> mcsValues;
77 int channelWidth{-1}; // in MHz, -1 indicates an unset value
78 int guardInterval{-1}; // in nanoseconds, -1 indicates an unset value
79 uint32_t payloadSize =
80 700; // must fit in the max TX duration when transmitting at MCS 0 over an RU of 26 tones
81 std::string phyModel{"Yans"};
82 double minExpectedThroughput{0.0};
83 double maxExpectedThroughput{0.0};
84 Time accessReqInterval{0};
85
86 CommandLine cmd(__FILE__);
87 cmd.AddValue("frequency",
88 "Whether working in the 2.4, 5 or 6 GHz band (other values gets rejected)",
89 frequency);
90 cmd.AddValue("distance",
91 "Distance in meters between the station and the access point",
92 distance);
93 cmd.AddValue("simulationTime", "Simulation time", simulationTime);
94 cmd.AddValue("udp", "UDP if set to 1, TCP otherwise", udp);
95 cmd.AddValue("downlink",
96 "Generate downlink flows if set to 1, uplink flows otherwise",
97 downlink);
98 cmd.AddValue("useRts", "Enable/disable RTS/CTS", useRts);
99 cmd.AddValue("use80Plus80", "Enable/disable use of 80+80 MHz", use80Plus80);
100 cmd.AddValue("useExtendedBlockAck", "Enable/disable use of extended BACK", useExtendedBlockAck);
101 cmd.AddValue("nStations", "Number of non-AP HE stations", nStations);
102 cmd.AddValue("dlAckType",
103 "Ack sequence type for DL OFDMA (NO-OFDMA, ACK-SU-FORMAT, MU-BAR, AGGR-MU-BAR)",
104 dlAckSeqType);
105 cmd.AddValue("enableUlOfdma",
106 "Enable UL OFDMA (useful if DL OFDMA is enabled and TCP is used)",
107 enableUlOfdma);
108 cmd.AddValue("enableBsrp",
109 "Enable BSRP (useful if DL and UL OFDMA are enabled and TCP is used)",
110 enableBsrp);
111 cmd.AddValue(
112 "muSchedAccessReqInterval",
113 "Duration of the interval between two requests for channel access made by the MU scheduler",
114 accessReqInterval);
115 cmd.AddValue(
116 "mcs",
117 "list of comma separated MCS values to test; if unset, all MCS values (0-11) are tested",
118 mcsStr);
119 cmd.AddValue("channelWidth",
120 "if set, limit testing to a specific channel width expressed in MHz (20, 40, 80 "
121 "or 160 MHz)",
122 channelWidth);
123 cmd.AddValue("guardInterval",
124 "if set, limit testing to a specific guard interval duration expressed in "
125 "nanoseconds (800, 1600 or 3200 ns)",
126 guardInterval);
127 cmd.AddValue("payloadSize", "The application payload size in bytes", payloadSize);
128 cmd.AddValue("phyModel",
129 "PHY model to use when OFDMA is disabled (Yans or Spectrum). If 80+80 MHz or "
130 "OFDMA is enabled "
131 "then Spectrum is automatically selected",
132 phyModel);
133 cmd.AddValue("minExpectedThroughput",
134 "if set, simulation fails if the lowest throughput is below this value",
135 minExpectedThroughput);
136 cmd.AddValue("maxExpectedThroughput",
137 "if set, simulation fails if the highest throughput is above this value",
138 maxExpectedThroughput);
139 cmd.Parse(argc, argv);
140
141 if (useRts)
142 {
143 Config::SetDefault("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue("0"));
144 Config::SetDefault("ns3::WifiDefaultProtectionManager::EnableMuRts", BooleanValue(true));
145 }
146
147 if (dlAckSeqType == "ACK-SU-FORMAT")
148 {
149 Config::SetDefault("ns3::WifiDefaultAckManager::DlMuAckSequenceType",
151 }
152 else if (dlAckSeqType == "MU-BAR")
153 {
154 Config::SetDefault("ns3::WifiDefaultAckManager::DlMuAckSequenceType",
156 }
157 else if (dlAckSeqType == "AGGR-MU-BAR")
158 {
159 Config::SetDefault("ns3::WifiDefaultAckManager::DlMuAckSequenceType",
161 }
162 else if (dlAckSeqType != "NO-OFDMA")
163 {
164 NS_ABORT_MSG("Invalid DL ack sequence type (must be NO-OFDMA, ACK-SU-FORMAT, MU-BAR or "
165 "AGGR-MU-BAR)");
166 }
167
168 if (phyModel != "Yans" && phyModel != "Spectrum")
169 {
170 NS_ABORT_MSG("Invalid PHY model (must be Yans or Spectrum)");
171 }
172 if (use80Plus80 || (dlAckSeqType != "NO-OFDMA"))
173 {
174 // SpectrumWifiPhy is required for 80+80 MHz and OFDMA
175 phyModel = "Spectrum";
176 }
177
178 double prevThroughput[12] = {0};
179
180 std::cout << "MCS value"
181 << "\t\t"
182 << "Channel width"
183 << "\t\t"
184 << "GI"
185 << "\t\t\t"
186 << "Throughput" << '\n';
187 uint8_t minMcs = 0;
188 uint8_t maxMcs = 11;
189
190 if (mcsStr.empty())
191 {
192 for (uint8_t mcs = minMcs; mcs <= maxMcs; ++mcs)
193 {
194 mcsValues.push_back(mcs);
195 }
196 }
197 else
198 {
199 AttributeContainerValue<UintegerValue, ',', std::vector> attr;
201 checker->SetItemChecker(MakeUintegerChecker<uint8_t>());
202 attr.DeserializeFromString(mcsStr, checker);
203 mcsValues = attr.Get();
204 std::sort(mcsValues.begin(), mcsValues.end());
205 }
206
207 int minChannelWidth = 20;
208 int maxChannelWidth = frequency == 2.4 ? 40 : 160;
209 if ((channelWidth != -1) &&
210 ((channelWidth < minChannelWidth) || (channelWidth > maxChannelWidth)))
211 {
212 NS_FATAL_ERROR("Invalid channel width: " << channelWidth << " MHz");
213 }
214 if (channelWidth >= minChannelWidth && channelWidth <= maxChannelWidth)
215 {
216 minChannelWidth = channelWidth;
217 maxChannelWidth = channelWidth;
218 }
219 int minGi = enableUlOfdma ? 1600 : 800;
220 int maxGi = 3200;
221 if (guardInterval >= minGi && guardInterval <= maxGi)
222 {
223 minGi = guardInterval;
224 maxGi = guardInterval;
225 }
226
227 for (const auto mcs : mcsValues)
228 {
229 uint8_t index = 0;
230 double previous = 0;
231 for (int width = minChannelWidth; width <= maxChannelWidth; width *= 2) // MHz
232 {
233 const auto is80Plus80 = (use80Plus80 && (width == 160));
234 const std::string widthStr = is80Plus80 ? "80+80" : std::to_string(width);
235 const auto segmentWidthStr = is80Plus80 ? "80" : widthStr;
236 for (int gi = maxGi; gi >= minGi; gi /= 2) // Nanoseconds
237 {
238 if (!udp)
239 {
240 Config::SetDefault("ns3::TcpSocket::SegmentSize", UintegerValue(payloadSize));
241 }
242
244 wifiStaNodes.Create(nStations);
246 wifiApNode.Create(1);
247
248 NetDeviceContainer apDevice;
252 std::string channelStr("{0, " + segmentWidthStr + ", ");
253 StringValue ctrlRate;
254 auto nonHtRefRateMbps = HePhy::GetNonHtReferenceRate(mcs) / 1e6;
255
256 std::ostringstream ossDataMode;
257 ossDataMode << "HeMcs" << mcs;
258
259 if (frequency == 6)
260 {
261 ctrlRate = StringValue(ossDataMode.str());
262 channelStr += "BAND_6GHZ, 0}";
263 Config::SetDefault("ns3::LogDistancePropagationLossModel::ReferenceLoss",
264 DoubleValue(48));
265 }
266 else if (frequency == 5)
267 {
268 std::ostringstream ossControlMode;
269 ossControlMode << "OfdmRate" << nonHtRefRateMbps << "Mbps";
270 ctrlRate = StringValue(ossControlMode.str());
271 channelStr += "BAND_5GHZ, 0}";
272 }
273 else if (frequency == 2.4)
274 {
275 std::ostringstream ossControlMode;
276 ossControlMode << "ErpOfdmRate" << nonHtRefRateMbps << "Mbps";
277 ctrlRate = StringValue(ossControlMode.str());
278 channelStr += "BAND_2_4GHZ, 0}";
279 Config::SetDefault("ns3::LogDistancePropagationLossModel::ReferenceLoss",
280 DoubleValue(40));
281 }
282 else
283 {
284 NS_FATAL_ERROR("Wrong frequency value!");
285 }
286
287 if (is80Plus80)
288 {
289 channelStr += std::string(";") + channelStr;
290 }
291
292 wifi.SetStandard(WIFI_STANDARD_80211ax);
293 wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
294 "DataMode",
295 StringValue(ossDataMode.str()),
296 "ControlMode",
297 ctrlRate);
298 // Set guard interval
299 wifi.ConfigHeOptions("GuardInterval", TimeValue(NanoSeconds(gi)));
300
301 Ssid ssid = Ssid("ns3-80211ax");
302
303 if (phyModel == "Spectrum")
304 {
305 auto spectrumChannel = CreateObject<MultiModelSpectrumChannel>();
306
308 spectrumChannel->AddPropagationLossModel(lossModel);
309
311 phy.SetPcapDataLinkType(WifiPhyHelper::DLT_IEEE802_11_RADIO);
312 phy.SetChannel(spectrumChannel);
313
314 mac.SetType("ns3::StaWifiMac",
315 "Ssid",
316 SsidValue(ssid),
317 "MpduBufferSize",
318 UintegerValue(useExtendedBlockAck ? 256 : 64));
319 phy.Set("ChannelSettings", StringValue(channelStr));
320 staDevices = wifi.Install(phy, mac, wifiStaNodes);
321
322 if (dlAckSeqType != "NO-OFDMA")
323 {
324 mac.SetMultiUserScheduler("ns3::RrMultiUserScheduler",
325 "EnableUlOfdma",
326 BooleanValue(enableUlOfdma),
327 "EnableBsrp",
328 BooleanValue(enableBsrp),
329 "AccessReqInterval",
330 TimeValue(accessReqInterval));
331 }
332 mac.SetType("ns3::ApWifiMac",
333 "EnableBeaconJitter",
334 BooleanValue(false),
335 "Ssid",
336 SsidValue(ssid));
337 apDevice = wifi.Install(phy, mac, wifiApNode);
338 }
339 else
340 {
343 phy.SetPcapDataLinkType(WifiPhyHelper::DLT_IEEE802_11_RADIO);
344 phy.SetChannel(channel.Create());
345
346 mac.SetType("ns3::StaWifiMac",
347 "Ssid",
348 SsidValue(ssid),
349 "MpduBufferSize",
350 UintegerValue(useExtendedBlockAck ? 256 : 64));
351 phy.Set("ChannelSettings", StringValue(channelStr));
352 staDevices = wifi.Install(phy, mac, wifiStaNodes);
353
354 mac.SetType("ns3::ApWifiMac",
355 "EnableBeaconJitter",
356 BooleanValue(false),
357 "Ssid",
358 SsidValue(ssid));
359 apDevice = wifi.Install(phy, mac, wifiApNode);
360 }
361
362 int64_t streamNumber = 150;
363 streamNumber += WifiHelper::AssignStreams(apDevice, streamNumber);
364 streamNumber += WifiHelper::AssignStreams(staDevices, streamNumber);
365
366 // mobility.
369
370 positionAlloc->Add(Vector(0.0, 0.0, 0.0));
371 positionAlloc->Add(Vector(distance, 0.0, 0.0));
372 mobility.SetPositionAllocator(positionAlloc);
373
374 mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
375
376 mobility.Install(wifiApNode);
377 mobility.Install(wifiStaNodes);
378
379 /* Internet stack*/
381 stack.Install(wifiApNode);
382 stack.Install(wifiStaNodes);
383 streamNumber += stack.AssignStreams(wifiApNode, streamNumber);
384 streamNumber += stack.AssignStreams(wifiStaNodes, streamNumber);
385
387 address.SetBase("192.168.1.0", "255.255.255.0");
388 Ipv4InterfaceContainer staNodeInterfaces;
389 Ipv4InterfaceContainer apNodeInterface;
390
391 staNodeInterfaces = address.Assign(staDevices);
392 apNodeInterface = address.Assign(apDevice);
393
394 /* Setting applications */
395 ApplicationContainer serverApp;
396 auto serverNodes = downlink ? std::ref(wifiStaNodes) : std::ref(wifiApNode);
398 NodeContainer clientNodes;
399 for (std::size_t i = 0; i < nStations; i++)
400 {
401 serverInterfaces.Add(downlink ? staNodeInterfaces.Get(i)
402 : apNodeInterface.Get(0));
403 clientNodes.Add(downlink ? wifiApNode.Get(0) : wifiStaNodes.Get(i));
404 }
405
406 const auto maxLoad =
407 HePhy::GetDataRate(mcs, MHz_u{static_cast<double>(width)}, NanoSeconds(gi), 1) /
408 nStations;
409 if (udp)
410 {
411 // UDP flow
412 uint16_t port = 9;
414 serverApp = server.Install(serverNodes.get());
415 streamNumber += server.AssignStreams(serverNodes.get(), streamNumber);
416
417 serverApp.Start(Seconds(0));
418 serverApp.Stop(simulationTime + Seconds(1));
419 const auto packetInterval = payloadSize * 8.0 / maxLoad;
420
421 for (std::size_t i = 0; i < nStations; i++)
422 {
424 client.SetAttribute("MaxPackets", UintegerValue(4294967295U));
425 client.SetAttribute("Interval", TimeValue(Seconds(packetInterval)));
426 client.SetAttribute("PacketSize", UintegerValue(payloadSize));
427 ApplicationContainer clientApp = client.Install(clientNodes.Get(i));
428 streamNumber += client.AssignStreams(clientNodes.Get(i), streamNumber);
429
430 clientApp.Start(Seconds(1));
431 clientApp.Stop(simulationTime + Seconds(1));
432 }
433 }
434 else
435 {
436 // TCP flow
437 uint16_t port = 50000;
439 PacketSinkHelper packetSinkHelper("ns3::TcpSocketFactory", localAddress);
440 serverApp = packetSinkHelper.Install(serverNodes.get());
441 streamNumber += packetSinkHelper.AssignStreams(serverNodes.get(), streamNumber);
442
443 serverApp.Start(Seconds(0));
444 serverApp.Stop(simulationTime + Seconds(1));
445
446 for (std::size_t i = 0; i < nStations; i++)
447 {
448 OnOffHelper onoff("ns3::TcpSocketFactory", Ipv4Address::GetAny());
449 onoff.SetAttribute("OnTime",
450 StringValue("ns3::ConstantRandomVariable[Constant=1]"));
451 onoff.SetAttribute("OffTime",
452 StringValue("ns3::ConstantRandomVariable[Constant=0]"));
453 onoff.SetAttribute("PacketSize", UintegerValue(payloadSize));
454 onoff.SetAttribute("DataRate", DataRateValue(maxLoad));
456 InetSocketAddress(serverInterfaces.GetAddress(i), port));
457 onoff.SetAttribute("Remote", remoteAddress);
458 ApplicationContainer clientApp = onoff.Install(clientNodes.Get(i));
459 streamNumber += onoff.AssignStreams(clientNodes.Get(i), streamNumber);
460
461 clientApp.Start(Seconds(1));
462 clientApp.Stop(simulationTime + Seconds(1));
463 }
464 }
465
467
468 Simulator::Stop(simulationTime + Seconds(1));
470
471 // When multiple stations are used, there are chances that association requests
472 // collide and hence the throughput may be lower than expected. Therefore, we relax
473 // the check that the throughput cannot decrease by introducing a scaling factor (or
474 // tolerance)
475 auto tolerance = 0.10;
476 auto rxBytes = 0.0;
477 if (udp)
478 {
479 for (uint32_t i = 0; i < serverApp.GetN(); i++)
480 {
481 rxBytes +=
482 payloadSize * DynamicCast<UdpServer>(serverApp.Get(i))->GetReceived();
483 }
484 }
485 else
486 {
487 for (uint32_t i = 0; i < serverApp.GetN(); i++)
488 {
489 rxBytes += DynamicCast<PacketSink>(serverApp.Get(i))->GetTotalRx();
490 }
491 }
492 auto throughput = (rxBytes * 8) / simulationTime.GetMicroSeconds(); // Mbit/s
493
495
496 std::cout << +mcs << "\t\t\t" << widthStr << " MHz\t\t"
497 << (widthStr.size() > 3 ? "" : "\t") << gi << " ns\t\t\t" << throughput
498 << " Mbit/s" << std::endl;
499
500 // test first element
501 if (mcs == minMcs && width == 20 && gi == 3200)
502 {
503 if (throughput * (1 + tolerance) < minExpectedThroughput)
504 {
505 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
506 exit(1);
507 }
508 }
509 // test last element
510 if (mcs == maxMcs && width == maxChannelWidth && gi == 800)
511 {
512 if (maxExpectedThroughput > 0 &&
513 throughput > maxExpectedThroughput * (1 + tolerance))
514 {
515 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
516 exit(1);
517 }
518 }
519 // Skip comparisons with previous cases if more than one stations are present
520 // because, e.g., random collisions in the establishment of Block Ack agreements
521 // have an impact on throughput
522 if (nStations == 1)
523 {
524 // test previous throughput is smaller (for the same mcs)
525 if (throughput * (1 + tolerance) > previous)
526 {
527 previous = throughput;
528 }
529 else if (throughput > 0)
530 {
531 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
532 exit(1);
533 }
534 // test previous throughput is smaller (for the same channel width and GI)
535 if (throughput * (1 + tolerance) > prevThroughput[index])
536 {
537 prevThroughput[index] = throughput;
538 }
539 else if (throughput > 0)
540 {
541 NS_LOG_ERROR("Obtained throughput " << throughput << " is not expected!");
542 exit(1);
543 }
544 }
545 index++;
546 }
547 }
548 }
549 return 0;
550}
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:1683
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:1727
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.
holds a vector of ns3::NetDevice pointers
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.
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:94
AttributeValue implementation for Time.
Definition nstime.h:1432
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 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
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:1381
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition nstime.h:1345
@ 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.
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
Definition ptr.h:580
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