A Discrete-Event Network Simulator
API
Loading...
Searching...
No Matches
wifi-emlsr-link-switch-test.cc
Go to the documentation of this file.
1/*
2 * Copyright (c) 2023 Universita' degli Studi di Napoli Federico II
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 * Author: Stefano Avallone <stavallo@unina.it>
7 */
8
9#include "wifi-emlsr-link-switch-test.h"
10
11#include "ns3/advanced-emlsr-manager.h"
12#include "ns3/boolean.h"
13#include "ns3/config.h"
14#include "ns3/eht-configuration.h"
15#include "ns3/eht-frame-exchange-manager.h"
16#include "ns3/interference-helper.h"
17#include "ns3/log.h"
18#include "ns3/mgt-action-headers.h"
19#include "ns3/multi-model-spectrum-channel.h"
20#include "ns3/pointer.h"
21#include "ns3/qos-txop.h"
22#include "ns3/simulator.h"
23#include "ns3/spectrum-wifi-phy.h"
24#include "ns3/string.h"
25#include "ns3/wifi-net-device.h"
26#include "ns3/wifi-spectrum-phy-interface.h"
27
28#include <algorithm>
29#include <functional>
30#include <iomanip>
31
32using namespace ns3;
33
34NS_LOG_COMPONENT_DEFINE("WifiEmlsrLinkSwitchTest");
35
36EmlsrLinkSwitchTest::EmlsrLinkSwitchTest(const Params& params)
37 : EmlsrOperationsTestBase(
38 std::string("Check EMLSR link switching (switchAuxPhy=") +
39 std::to_string(params.switchAuxPhy) + ", resetCamStateAndInterruptSwitch=" +
40 std::to_string(params.resetCamStateAndInterruptSwitch) +
41 ", auxPhyMaxChWidth=" + std::to_string(params.auxPhyMaxChWidth) + "MHz )"),
42 m_switchAuxPhy(params.switchAuxPhy),
43 m_resetCamStateAndInterruptSwitch(params.resetCamStateAndInterruptSwitch),
44 m_auxPhyMaxChWidth(params.auxPhyMaxChWidth),
45 m_countQoSframes(0),
46 m_countIcfFrames(0),
47 m_countRtsFrames(0),
48 m_txPsdusPos(0)
49{
50 m_nEmlsrStations = 1;
51 m_nNonEmlsrStations = 0;
52 m_linksToEnableEmlsrOn = {0, 1, 2}; // enable EMLSR on all links right after association
53 m_mainPhyId = 1;
54 m_establishBaDl = {0};
55 m_duration = Seconds(1.0);
56 // when aux PHYs do not switch link, the main PHY switches back to its previous link after
57 // a TXOP, hence the transition delay must exceed the channel switch delay (default: 250us)
58 m_transitionDelay = {MicroSeconds(128)};
59}
60
61void
62EmlsrLinkSwitchTest::Transmit(Ptr<WifiMac> mac,
63 uint8_t phyId,
64 WifiConstPsduMap psduMap,
65 WifiTxVector txVector,
66 double txPowerW)
67{
68 EmlsrOperationsTestBase::Transmit(mac, phyId, psduMap, txVector, txPowerW);
69 auto linkId = m_txPsdus.back().linkId;
70
71 auto psdu = psduMap.begin()->second;
72 auto nodeId = mac->GetDevice()->GetNode()->GetId();
73
74 switch (psdu->GetHeader(0).GetType())
75 {
76 case WIFI_MAC_MGT_ASSOCIATION_REQUEST:
77 NS_ASSERT_MSG(nodeId > 0, "APs do not send AssocReq frames");
78 NS_TEST_EXPECT_MSG_EQ(+linkId, +m_mainPhyId, "AssocReq not sent by the main PHY");
79 break;
80
81 case WIFI_MAC_MGT_ACTION: {
82 auto [category, action] = WifiActionHeader::Peek(psdu->GetPayload(0));
83
84 if (nodeId == 1 && category == WifiActionHeader::PROTECTED_EHT &&
85 action.protectedEhtAction ==
86 WifiActionHeader::PROTECTED_EHT_EML_OPERATING_MODE_NOTIFICATION)
87 {
88 // the EMLSR client is starting the transmission of the EML OMN frame;
89 // temporarily block transmissions of QoS data frames from the AP MLD to the
90 // non-AP MLD on all the links but the one used for ML setup, so that we know
91 // that the first QoS data frame is sent on the link of the main PHY
92 std::set<uint8_t> linksToBlock;
93 for (uint8_t id = 0; id < m_apMac->GetNLinks(); id++)
94 {
95 if (id != m_mainPhyId)
96 {
97 linksToBlock.insert(id);
98 }
99 }
100 m_apMac->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
101 AC_BE,
102 {WIFI_QOSDATA_QUEUE},
103 m_staMacs[0]->GetAddress(),
104 m_apMac->GetAddress(),
105 {0},
106 linksToBlock);
107 }
108 }
109 break;
110
111 case WIFI_MAC_CTL_TRIGGER:
112 CheckInitialControlFrame(psduMap, txVector, linkId);
113 break;
114
115 case WIFI_MAC_QOSDATA:
116 CheckQosFrames(psduMap, txVector, linkId);
117 break;
118
119 case WIFI_MAC_CTL_RTS:
120 CheckRtsFrame(psduMap, txVector, linkId);
121 break;
122
123 default:;
124 }
125}
126
127void
128EmlsrLinkSwitchTest::DoSetup()
129{
130 Config::SetDefault("ns3::DefaultEmlsrManager::SwitchAuxPhy", BooleanValue(m_switchAuxPhy));
131 Config::SetDefault("ns3::EmlsrManager::ResetCamState",
132 BooleanValue(m_resetCamStateAndInterruptSwitch));
133 Config::SetDefault("ns3::AdvancedEmlsrManager::InterruptSwitch",
134 BooleanValue(m_resetCamStateAndInterruptSwitch));
135 Config::SetDefault("ns3::EmlsrManager::AuxPhyChannelWidth", UintegerValue(m_auxPhyMaxChWidth));
136 Config::SetDefault("ns3::WifiPhy::ChannelSwitchDelay", TimeValue(MicroSeconds(45)));
137
138 EmlsrOperationsTestBase::DoSetup();
139
140 m_errorModel = CreateObject<ListErrorModel>();
141 for (std::size_t linkId = 0; linkId < m_apMac->GetNLinks(); ++linkId)
142 {
143 m_apMac->GetWifiPhy(linkId)->SetPostReceptionErrorModel(m_errorModel);
144 }
145
146 // use channels of different widths
147 for (auto mac : std::initializer_list<Ptr<WifiMac>>{m_apMac, m_staMacs[0]})
148 {
149 mac->GetWifiPhy(0)->SetOperatingChannel(
150 WifiPhy::ChannelTuple{4, 40, WIFI_PHY_BAND_2_4GHZ, 1});
151 mac->GetWifiPhy(1)->SetOperatingChannel(
152 WifiPhy::ChannelTuple{58, 80, WIFI_PHY_BAND_5GHZ, 3});
153 mac->GetWifiPhy(2)->SetOperatingChannel(
154 WifiPhy::ChannelTuple{79, 160, WIFI_PHY_BAND_6GHZ, 7});
155 }
156}
157
158void
168
169void
170EmlsrLinkSwitchTest::CheckQosFrames(const WifiConstPsduMap& psduMap,
171 const WifiTxVector& txVector,
172 uint8_t linkId)
173{
174 m_countQoSframes++;
175
176 switch (m_countQoSframes)
177 {
178 case 1:
179 // unblock transmissions on all links
180 m_apMac->GetMacQueueScheduler()->UnblockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
181 AC_BE,
182 {WIFI_QOSDATA_QUEUE},
183 m_staMacs[0]->GetAddress(),
184 m_apMac->GetAddress(),
185 {0},
186 {0, 1, 2});
187 // block transmissions on the link used for ML setup
188 m_apMac->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
189 AC_BE,
190 {WIFI_QOSDATA_QUEUE},
191 m_staMacs[0]->GetAddress(),
192 m_apMac->GetAddress(),
193 {0},
194 {m_mainPhyId});
195 // generate a new data packet, which will be sent on a link other than the one
196 // used for ML setup, hence triggering a link switching on the EMLSR client
197 m_apMac->GetDevice()->GetNode()->AddApplication(GetApplication(DOWNLINK, 0, 2, 1000));
198 break;
199 case 2:
200 // block transmission on the link used to send this QoS data frame
201 m_apMac->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
202 AC_BE,
203 {WIFI_QOSDATA_QUEUE},
204 m_staMacs[0]->GetAddress(),
205 m_apMac->GetAddress(),
206 {0},
207 {linkId});
208 // generate a new data packet, which will be sent on the link that has not been used
209 // so far, hence triggering another link switching on the EMLSR client
210 m_apMac->GetDevice()->GetNode()->AddApplication(GetApplication(DOWNLINK, 0, 2, 1000));
211 break;
212 case 3:
213 // block transmission on the link used to send this QoS data frame
214 m_apMac->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
215 AC_BE,
216 {WIFI_QOSDATA_QUEUE},
217 m_staMacs[0]->GetAddress(),
218 m_apMac->GetAddress(),
219 {0},
220 {linkId});
221 // unblock transmissions on the link used for ML setup
222 m_apMac->GetMacQueueScheduler()->UnblockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
223 AC_BE,
224 {WIFI_QOSDATA_QUEUE},
225 m_staMacs[0]->GetAddress(),
226 m_apMac->GetAddress(),
227 {0},
228 {m_mainPhyId});
229 // generate a new data packet, which will be sent again on the link used for ML setup,
230 // hence triggering yet another link switching on the EMLSR client
231 m_apMac->GetDevice()->GetNode()->AddApplication(GetApplication(DOWNLINK, 0, 2, 1000));
232 break;
233 case 4:
234 // block transmissions on all links at non-AP MLD side
235 m_staMacs[0]->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
236 AC_BE,
237 {WIFI_QOSDATA_QUEUE},
238 m_apMac->GetAddress(),
239 m_staMacs[0]->GetAddress(),
240 {0},
241 {0, 1, 2});
242 // unblock transmissions on the link used for ML setup (non-AP MLD side)
243 m_staMacs[0]->GetMacQueueScheduler()->UnblockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
244 AC_BE,
245 {WIFI_QOSDATA_QUEUE},
246 m_apMac->GetAddress(),
247 m_staMacs[0]->GetAddress(),
248 {0},
249 {m_mainPhyId});
250 // trigger establishment of BA agreement with AP as recipient
251 m_staMacs[0]->GetDevice()->GetNode()->AddApplication(GetApplication(UPLINK, 0, 4, 1000));
252 break;
253 case 5:
254 // unblock transmissions on all links at non-AP MLD side
255 m_staMacs[0]->GetMacQueueScheduler()->UnblockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
256 AC_BE,
257 {WIFI_QOSDATA_QUEUE},
258 m_apMac->GetAddress(),
259 m_staMacs[0]->GetAddress(),
260 {0},
261 {0, 1, 2});
262 // block transmissions on the link used for ML setup (non-AP MLD side)
263 m_staMacs[0]->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
264 AC_BE,
265 {WIFI_QOSDATA_QUEUE},
266 m_apMac->GetAddress(),
267 m_staMacs[0]->GetAddress(),
268 {0},
269 {m_mainPhyId});
270 // generate a new data packet, which will be sent on a link other than the one
271 // used for ML setup, hence triggering a link switching on the EMLSR client
272 m_staMacs[0]->GetDevice()->GetNode()->AddApplication(GetApplication(UPLINK, 0, 2, 1000));
273 break;
274 }
275}
276
277/**
278 * AUX PHY switching enabled (X = channel switch delay)
279 *
280 * |--------- aux PHY A ---------|------ main PHY ------|-------------- aux PHY B -------------
281 * ┌───┐ ┌───┐
282 * │ICF│ │QoS│
283 * ──────────────────────────┴───┴┬───┬┴───┴┬──┬────────────────────────────────────────────────
284 * [link 0] │CTS│ │BA│
285 * └───┘ └──┘
286 *
287 *
288 * |--------- main PHY ----------|------------------ aux PHY A ----------------|--- main PHY ---
289 * ┌───┐ ┌───┐ ┌───┐ ┌───┐
290 * │ICF│ │QoS│ │ICF│ │QoS│
291 * ───┴───┴┬───┬┴───┴┬──┬──────────────────────────────────────────────────┴───┴┬───┬┴───┴┬──┬──
292 * [link 1]│CTS│ │BA│ │CTS│ │BA│
293 * └───┘ └──┘ └───┘ └──┘
294 *
295 *
296 * |--------------------- aux PHY B --------------------|------ main PHY ------|-- aux PHY A ---
297 * ┌───┐ ┌───┐
298 * │ICF│ │QoS│
299 * ─────────────────────────────────────────────────┴───┴┬───┬┴───┴┬──┬─────────────────────────
300 * [link 2] │CTS│ │BA│
301 * └───┘ └──┘
302 *
303 * ... continued ...
304 *
305 * |----------------------------------------- aux PHY B ---------------------------------------
306 * ─────────────────────────────────────────────────────────────────────────────────────────────
307 * [link 0]
308 *
309 * |--------- main PHY ----------|X|X|------------------------ aux PHY A ----------------------
310 * ┌───┐
311 * │ACK│
312 * ──────────┬───┬┴───┴────────────────────────────────────────────────────────────────────────
313 * [link 1] │QoS│
314 * └───┘
315 *
316 * |-------- aux PHY A ----------|X|---------------------- main PHY ---------------------------
317 * ┌──┐
318 * │BA│
319 * ────────────────────────┬───X──────┬───┬┴──┴────────────────────────────────────────────────
320 * [link 2] │RTS│ │QoS│
321 * └───┘ └───┘
322 ************************************************************************************************
323 *
324 * AUX PHY switching disabled (X = channel switch delay)
325 *
326 * |------------------------------------------ aux PHY A ---------------------------------------
327 * |-- main PHY --|X|
328 * ┌───┐ ┌───┐
329 * │ICF│ │QoS│
330 * ──────────────────────────┴───┴┬───┬┴───┴┬──┬────────────────────────────────────────────────
331 * [link 0] │CTS│ │BA│
332 * └───┘ └──┘
333 *
334 * |-main|
335 * |--------- main PHY ----------| |-PHY-| |------ main PHY ------
336 * ┌───┐ ┌───┐ ┌───┐ ┌───┐
337 * │ICF│ │QoS│ │ICF│ │QoS│
338 * ───┴───┴┬───┬┴───┴┬──┬──────────────────────────────────────────────────┴───┴┬───┬┴───┴┬──┬──
339 * [link 1]│CTS│ │BA│ │CTS│ │BA│
340 * └───┘ └──┘ └───┘ └──┘
341 *
342 *
343 * |------------------------------------------ aux PHY B ---------------------------------------
344 * |-- main PHY --|X|
345 * ┌───┐ ┌───┐
346 * │ICF│ │QoS│
347 * ─────────────────────────────────────────────────┴───┴┬───┬┴───┴┬──┬─────────────────────────
348 * [link 2] │CTS│ │BA│
349 * └───┘ └──┘
350 *
351 * ... continued ...
352 *
353 * |----------------------------------------- aux PHY A ---------------------------------------
354 * ─────────────────────────────────────────────────────────────────────────────────────────────
355 * [link 0]
356 *
357 * |-------- main PHY --------| |--- main PHY ---|
358 * ┌───┐
359 * │ACK│
360 * ──────────┬───┬┴───┴────────────────────────────────────────────────────────────────────────
361 * [link 1] │QoS│
362 * └───┘
363 *
364 * |------------------------------------------ aux PHY B --------------------------------------
365 * |X||X| |X|-------------- main PHY --------------
366 * ┌───┐ ┌──┐
367 * │CTS│ │BA│
368 * ────────────────────────┬───X───────────────┬───┬┴───┴┬───┬┴──┴─────────────────────────────
369 * [link 2] │RTS│ │RTS│ │QoS│
370 * └───┘ └───┘ └───┘
371 *
372 */
373
374void
375EmlsrLinkSwitchTest::CheckInitialControlFrame(const WifiConstPsduMap& psduMap,
376 const WifiTxVector& txVector,
377 uint8_t linkId)
378{
379 if (++m_countIcfFrames == 1)
380 {
381 m_txPsdusPos = m_txPsdus.size() - 1;
382 }
383
384 // the first ICF is sent to protect ADDBA_REQ for DL BA agreement, then one ICF is sent before
385 // each of the 4 DL QoS Data frames; finally, another ICF is sent before the ADDBA_RESP for UL
386 // BA agreement. Hence, at any time the number of ICF sent is always greater than or equal to
387 // the number of QoS data frames sent.
388 NS_TEST_EXPECT_MSG_GT_OR_EQ(m_countIcfFrames, m_countQoSframes, "Unexpected number of ICFs");
389
390 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
391 auto phyRecvIcf = m_staMacs[0]->GetWifiPhy(linkId); // PHY receiving the ICF
392
393 auto currMainPhyLinkId = m_staMacs[0]->GetLinkForPhy(mainPhy);
394 NS_TEST_ASSERT_MSG_EQ(currMainPhyLinkId.has_value(),
395 true,
396 "Didn't find the link on which the Main PHY is operating");
397 NS_TEST_ASSERT_MSG_NE(phyRecvIcf,
398 nullptr,
399 "No PHY on the link where ICF " << m_countQoSframes << " was sent");
400
401 if (phyRecvIcf != mainPhy)
402 {
403 NS_TEST_EXPECT_MSG_LT_OR_EQ(
404 phyRecvIcf->GetChannelWidth(),
405 m_auxPhyMaxChWidth,
406 "Aux PHY that received ICF "
407 << m_countQoSframes << " is operating on a channel whose width exceeds the limit");
408 }
409
410 // the first two ICFs (before ADDBA_REQ and before first DL QoS Data) and the ICF before the
411 // ADDBA_RESP are received by the main PHY. If aux PHYs do not switch links, the ICF before
412 // the last DL QoS Data is also received by the main PHY
413 NS_TEST_EXPECT_MSG_EQ((phyRecvIcf == mainPhy),
414 (m_countIcfFrames == 1 || m_countIcfFrames == 2 ||
415 (!m_switchAuxPhy && m_countIcfFrames == 5) || m_countIcfFrames == 6),
416 "Expecting that the ICF was received by the main PHY");
417
418 // if aux PHYs do not switch links, the main PHY is operating on its original link when
419 // the transmission of an ICF starts
420 NS_TEST_EXPECT_MSG_EQ(m_switchAuxPhy || currMainPhyLinkId == m_mainPhyId,
421 true,
422 "Main PHY is operating on an unexpected link ("
423 << +currMainPhyLinkId.value() << ", expected " << +m_mainPhyId
424 << ")");
425
426 auto txDuration =
427 WifiPhy::CalculateTxDuration(psduMap, txVector, m_apMac->GetWifiPhy(linkId)->GetPhyBand());
428
429 // check that PHYs are operating on the expected link after the reception of the ICF
430 Simulator::Schedule(txDuration + NanoSeconds(1), [=, this]() {
431 // the main PHY must be operating on the link where ICF was sent
432 NS_TEST_EXPECT_MSG_EQ(m_staMacs[0]->GetWifiPhy(linkId),
433 mainPhy,
434 "PHY operating on link where ICF was sent is not the main PHY");
435
436 // the behavior of Aux PHYs depends on whether they switch channel or not
437 if (m_switchAuxPhy)
438 {
439 if (mainPhy != phyRecvIcf)
440 {
441 NS_TEST_EXPECT_MSG_EQ(phyRecvIcf->IsStateSwitching(),
442 true,
443 "Aux PHY expected to switch channel");
444 }
445 Simulator::Schedule(phyRecvIcf->GetChannelSwitchDelay(), [=, this]() {
446 NS_TEST_EXPECT_MSG_EQ(m_staMacs[0]->GetWifiPhy(*currMainPhyLinkId),
447 phyRecvIcf,
448 "The Aux PHY that received the ICF is expected to operate "
449 "on the link where Main PHY was before switching channel");
450 });
451 }
452 else
453 {
454 NS_TEST_EXPECT_MSG_EQ(phyRecvIcf->IsStateSwitching(),
455 false,
456 "Aux PHY is not expected to switch channel");
457 NS_TEST_EXPECT_MSG_EQ(phyRecvIcf->GetPhyBand(),
458 mainPhy->GetPhyBand(),
459 "The Aux PHY that received the ICF is expected to operate "
460 "on the same band as the Main PHY");
461 }
462 });
463}
464
465void
466EmlsrLinkSwitchTest::CheckRtsFrame(const WifiConstPsduMap& psduMap,
467 const WifiTxVector& txVector,
468 uint8_t linkId)
469{
470 // corrupt the first RTS frame (sent by the EMLSR client)
471 if (++m_countRtsFrames == 1)
472 {
473 auto psdu = psduMap.begin()->second;
474 m_errorModel->SetList({psdu->GetPacket()->GetUid()});
475
476 // check that when CTS timeout occurs, the main PHY is switching
477 Simulator::Schedule(
478 m_staMacs[0]->GetFrameExchangeManager(linkId)->GetWifiTxTimer().GetDelayLeft() -
479 TimeStep(1),
480 [=, this]() {
481 // store the time to complete the current channel switch at CTS timeout
482 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
483 auto toCurrSwitchEnd = mainPhy->GetDelayUntilIdle() + TimeStep(1);
484
485 Simulator::Schedule(TimeStep(1), [=, this]() {
486 NS_TEST_EXPECT_MSG_EQ(mainPhy->IsStateSwitching(),
487 true,
488 "Main PHY expected to be in SWITCHING state instead of "
489 << mainPhy->GetState()->GetState());
490
491 // If main PHY channel switch can be interrupted, the main PHY should be back
492 // operating on the preferred link after a channel switch delay. Otherwise, it
493 // will be operating on the preferred link, if SwitchAuxPhy is false, or on the
494 // link used to send the RTS, if SwitchAuxPhy is true, after the remaining
495 // channel switching time plus the channel switch delay.
496 auto newLinkId = (m_resetCamStateAndInterruptSwitch || !m_switchAuxPhy)
497 ? m_mainPhyId
498 : linkId;
499 auto delayLeft = m_resetCamStateAndInterruptSwitch
500 ? Time{0}
501 : toCurrSwitchEnd; // time to complete current switch
502 if (m_resetCamStateAndInterruptSwitch || !m_switchAuxPhy)
503 {
504 // add the time to perform another channel switch
505 delayLeft += mainPhy->GetChannelSwitchDelay();
506 }
507
508 auto totalSwitchDelay =
509 delayLeft + (mainPhy->GetChannelSwitchDelay() - toCurrSwitchEnd);
510
511 Simulator::Schedule(delayLeft - TimeStep(1), [=, this]() {
512 // check if the MSD timer was running on the link left by the main PHY
513 // before completing channel switch
514 bool msdWasRunning = m_staMacs[0]
515 ->GetEmlsrManager()
516 ->GetElapsedMediumSyncDelayTimer(m_mainPhyId)
517 .has_value();
518
519 Simulator::Schedule(TimeStep(2), [=, this]() {
520 auto id = m_staMacs[0]->GetLinkForPhy(mainPhy);
521 NS_TEST_EXPECT_MSG_EQ(id.has_value(),
522 true,
523 "Expected main PHY to operate on a link");
524 NS_TEST_EXPECT_MSG_EQ(*id,
525 newLinkId,
526 "Main PHY is operating on an unexpected link");
527 const auto startMsd = (totalSwitchDelay > MEDIUM_SYNC_THRESHOLD);
528 const auto msdIsRunning = msdWasRunning || startMsd;
529 CheckMsdTimerRunning(
530 m_staMacs[0],
531 m_mainPhyId,
532 msdIsRunning,
533 std::string("because total switch delay was ") +
534 std::to_string(totalSwitchDelay.GetNanoSeconds()) + "ns");
535 });
536 });
537 });
538 });
539 }
540 // block transmissions on all other links at non-AP MLD side
541 std::set<uint8_t> links{0, 1, 2};
542 links.erase(linkId);
543 m_staMacs[0]->GetMacQueueScheduler()->BlockQueues(WifiQueueBlockedReason::TID_NOT_MAPPED,
544 AC_BE,
545 {WIFI_QOSDATA_QUEUE},
546 m_apMac->GetAddress(),
547 m_staMacs[0]->GetAddress(),
548 {0},
549 links);
550}
551
552void
553EmlsrLinkSwitchTest::CheckResults()
554{
555 NS_TEST_ASSERT_MSG_NE(m_txPsdusPos, 0, "BA agreement establishment not completed");
556
557 // Expected frame exchanges after ML setup and EML OMN exchange:
558 // 1. (DL) ICF + CTS + ADDBA_REQ + ACK
559 // 2. (UL) ADDBA_RESP + ACK
560 // 3. (DL) ICF + CTS + DATA + BA
561 // 4. (DL) ICF + CTS + DATA + BA
562 // 5. (DL) ICF + CTS + DATA + BA
563 // 6. (DL) ICF + CTS + DATA + BA
564 // 7. (UL) ADDBA_REQ + ACK
565 // 8. (DL) ICF + CTS + ADDBA_RESP + ACK
566 // 9. (UL) DATA + BA
567 // 10. (UL) RTS - CTS timeout
568 // 11. (UL) (RTS + CTS + ) DATA + BA
569
570 // frame exchange 11 is protected if SwitchAuxPhy is false or (SwitchAuxPhy is true and) the
571 // main PHY switch can be interrupted
572 bool fe11protected = !m_switchAuxPhy || m_resetCamStateAndInterruptSwitch;
573
574 NS_TEST_EXPECT_MSG_EQ(m_countIcfFrames, 6, "Unexpected number of ICFs sent");
575
576 // frame exchanges without RTS because the EMLSR client sent the initial frame through main PHY
577 const std::size_t nFrameExchNoRts = fe11protected ? 3 : 4;
578
579 const std::size_t nFrameExchWithRts = fe11protected ? 1 : 0;
580
581 NS_TEST_ASSERT_MSG_GT_OR_EQ(m_txPsdus.size(),
582 m_txPsdusPos +
583 m_countIcfFrames * 4 + /* frames in frame exchange with ICF */
584 nFrameExchNoRts * 2 + /* frames in frame exchange without RTS */
585 nFrameExchWithRts * 4 + /* frames in frame exchange with RTS */
586 1, /* corrupted RTS */
587 "Insufficient number of TX PSDUs");
588
589 // m_txPsdusPos points to the first ICF
590 auto psduIt = std::next(m_txPsdus.cbegin(), m_txPsdusPos);
591
592 // lambda to increase psduIt while skipping Beacon frames
593 auto nextPsdu = [&]() {
594 do
595 {
596 ++psduIt;
597 } while (psduIt != m_txPsdus.cend() &&
598 psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsBeacon());
599 };
600
601 const std::size_t nFrameExchanges =
602 m_countIcfFrames + nFrameExchNoRts + nFrameExchWithRts + 1 /* corrupted RTS */;
603
604 for (std::size_t i = 1; i <= nFrameExchanges; ++i)
605 {
606 if (i == 1 || (i >= 3 && i <= 6) || i == 8 || i == 10 || (i == 11 && fe11protected))
607 {
608 // frame exchanges with protection
609 NS_TEST_EXPECT_MSG_EQ((psduIt->psduMap.size() == 1 &&
610 (i < 9 ? psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsTrigger()
611 : psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsRts())),
612 true,
613 "Expected a Trigger Frame (ICF)");
614 nextPsdu();
615 if (i == 10)
616 {
617 continue; // corrupted RTS
618 }
619 NS_TEST_EXPECT_MSG_EQ((psduIt->psduMap.size() == 1 &&
620 psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsCts()),
621 true,
622 "Expected a CTS");
623 nextPsdu();
624 }
625
626 if (i == 1 || i == 2 || i == 7 || i == 8) // frame exchanges with ADDBA REQ/RESP frames
627 {
628 NS_TEST_EXPECT_MSG_EQ((psduIt->psduMap.size() == 1 &&
629 psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsMgt()),
630 true,
631 "Expected a management frame");
632 nextPsdu();
633 NS_TEST_EXPECT_MSG_EQ((psduIt->psduMap.size() == 1 &&
634 psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsAck()),
635 true,
636 "Expected a Normal Ack");
637 }
638 else
639 {
640 NS_TEST_EXPECT_MSG_EQ((psduIt->psduMap.size() == 1 &&
641 psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsQosData()),
642 true,
643 "Expected a QoS Data frame");
644 nextPsdu();
645 NS_TEST_EXPECT_MSG_EQ((psduIt->psduMap.size() == 1 &&
646 psduIt->psduMap.at(SU_STA_ID)->GetHeader(0).IsBlockAck()),
647 true,
648 "Expected a BlockAck");
649 }
650 nextPsdu();
651 }
652}
653
654EmlsrCcaBusyTest::EmlsrCcaBusyTest(MHz_u auxPhyMaxChWidth)
655 : EmlsrOperationsTestBase(std::string("Check EMLSR link switching (auxPhyMaxChWidth=") +
656 std::to_string(auxPhyMaxChWidth) + "MHz )"),
657 m_auxPhyMaxChWidth(auxPhyMaxChWidth),
658 m_channelSwitchDelay(MicroSeconds(75)),
659 m_currMainPhyLinkId(0),
660 m_nextMainPhyLinkId(0)
661{
662 m_nEmlsrStations = 1;
663 m_nNonEmlsrStations = 1;
664 m_linksToEnableEmlsrOn = {0, 1, 2}; // enable EMLSR on all links right after association
665 m_mainPhyId = 1;
666 m_establishBaUl = {0};
667 m_duration = Seconds(1.0);
668 m_transitionDelay = {MicroSeconds(128)};
669}
670
671void
679
680void
681EmlsrCcaBusyTest::DoSetup()
682{
683 Config::SetDefault("ns3::DefaultEmlsrManager::SwitchAuxPhy", BooleanValue(true));
684 Config::SetDefault("ns3::EmlsrManager::AuxPhyChannelWidth", UintegerValue(m_auxPhyMaxChWidth));
685 Config::SetDefault("ns3::EmlsrManager::AuxPhyMaxModClass", StringValue("EHT"));
686 Config::SetDefault("ns3::WifiPhy::ChannelSwitchDelay", TimeValue(m_channelSwitchDelay));
687
688 EmlsrOperationsTestBase::DoSetup();
689
690 // use channels of different widths
691 for (auto mac : std::initializer_list<Ptr<WifiMac>>{m_apMac, m_staMacs[0], m_staMacs[1]})
692 {
693 mac->GetWifiPhy(0)->SetOperatingChannel(
694 WifiPhy::ChannelTuple{4, 40, WIFI_PHY_BAND_2_4GHZ, 0});
695 mac->GetWifiPhy(1)->SetOperatingChannel(
696 WifiPhy::ChannelTuple{58, 80, WIFI_PHY_BAND_5GHZ, 0});
697 mac->GetWifiPhy(2)->SetOperatingChannel(
698 WifiPhy::ChannelTuple{79, 160, WIFI_PHY_BAND_6GHZ, 0});
699 }
700}
701
702void
703EmlsrCcaBusyTest::TransmitPacketToAp(uint8_t linkId)
704{
705 m_staMacs[1]->GetDevice()->GetNode()->AddApplication(GetApplication(UPLINK, 1, 1, 2000));
706
707 // force the transmission of the packet to happen now on the given link.
708 // Multiple ScheduleNow calls are needed because Node::AddApplication() schedules a call to
709 // Application::Initialize(), which schedules a call to Application::StartApplication(), which
710 // schedules a call to PacketSocketClient::Send(), which finally generates the packet
711 Simulator::ScheduleNow([=, this]() {
712 Simulator::ScheduleNow([=, this]() {
713 Simulator::ScheduleNow([=, this]() {
714 m_staMacs[1]->GetFrameExchangeManager(linkId)->StartTransmission(
715 m_staMacs[1]->GetQosTxop(AC_BE),
716 m_staMacs[1]->GetWifiPhy(linkId)->GetChannelWidth());
717 });
718 });
719 });
720
721 // check that the other MLD started transmitting on the correct link
722 Simulator::Schedule(TimeStep(1), [=, this]() {
723 NS_TEST_EXPECT_MSG_EQ(m_staMacs[1]->GetWifiPhy(linkId)->IsStateTx(),
724 true,
725 "At time " << Simulator::Now().As(Time::NS)
726 << ", other MLD did not start transmitting on link "
727 << +linkId);
728 });
729}
730
731void
732EmlsrCcaBusyTest::StartTraffic()
733{
734 auto currMainPhyLinkId = m_staMacs[0]->GetLinkForPhy(m_mainPhyId);
735 NS_TEST_ASSERT_MSG_EQ(currMainPhyLinkId.has_value(),
736 true,
737 "Main PHY is not operating on any link");
738 m_currMainPhyLinkId = *currMainPhyLinkId;
739 m_nextMainPhyLinkId = (m_currMainPhyLinkId + 1) % 2;
740
741 // request the main PHY to switch to another link
742 m_staMacs[0]->GetEmlsrManager()->SwitchMainPhy(
743 m_nextMainPhyLinkId,
744 false,
745 EmlsrManager::DONT_REQUEST_ACCESS,
746 EmlsrDlTxopIcfReceivedByAuxPhyTrace{}); // trace info not used
747
748 // the other MLD transmits a packet to the AP
749 TransmitPacketToAp(m_nextMainPhyLinkId);
750
751 // schedule another packet transmission slightly (10 us) before the end of aux PHY switch
752 Simulator::Schedule(m_channelSwitchDelay - MicroSeconds(10),
753 &EmlsrCcaBusyTest::TransmitPacketToAp,
754 this,
755 m_currMainPhyLinkId);
756
757 // first checkpoint is after that the preamble of the PPDU has been received
758 Simulator::Schedule(MicroSeconds(8), &EmlsrCcaBusyTest::CheckPoint1, this);
759}
760
761/**
762 * ┌───────────────┐
763 * [link X] │ other to AP │CP3
764 * ──────────────────────────────┴───────────────┴──────────────────────────────────────────────
765 * |------ main PHY ------| |------------------- aux PHY ---------------------
766 * .\_ _/
767 * . \_ _/
768 * . \_ _/
769 * . \_ _/
770 * [link Y] . CP1 \/ CP2
771 * .┌───────────────┐
772 * .│ other to AP │
773 * ─────────────────────────┴───────────────┴────────────────────────────────────────────────────
774 * |------------ aux PHY ----------|---------------------- main PHY ----------------------------
775 *
776 */
777
778void
779EmlsrCcaBusyTest::CheckPoint1()
780{
781 // first checkpoint is after that the preamble of the first PPDU has been received
782 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
783
784 // 1. Main PHY is switching
785 NS_TEST_EXPECT_MSG_EQ(mainPhy->IsStateSwitching(), true, "Main PHY is not switching");
786
787 auto auxPhy = m_staMacs[0]->GetWifiPhy(m_nextMainPhyLinkId);
788 NS_TEST_EXPECT_MSG_NE(mainPhy, auxPhy, "Main PHY is operating on an unexpected link");
789
790 // 2. Aux PHY is receiving the PHY header
791 NS_TEST_EXPECT_MSG_EQ(auxPhy->GetInfoIfRxingPhyHeader().has_value(),
792 true,
793 "Aux PHY is not receiving a PHY header");
794
795 // 3. Main PHY dropped the preamble because it is switching
796 NS_TEST_EXPECT_MSG_EQ(mainPhy->GetInfoIfRxingPhyHeader().has_value(),
797 false,
798 "Main PHY is receiving a PHY header");
799
800 // 4. Channel access manager on destination link (Y) has been notified of CCA busy, but not
801 // until the end of transmission (main PHY dropped the preamble and notified CCA busy until
802 // end of transmission but the channel access manager on link Y does not yet have a listener
803 // attached to the main PHY; aux PHY notified CCA busy until the end of the PHY header field
804 // being received)
805 const auto caManager = m_staMacs[0]->GetChannelAccessManager(m_nextMainPhyLinkId);
806 const auto endTxTime = m_staMacs[1]->GetChannelAccessManager(m_nextMainPhyLinkId)->m_lastTxEnd;
807 NS_TEST_ASSERT_MSG_EQ(caManager->m_lastBusyEnd.contains(WIFI_CHANLIST_PRIMARY),
808 true,
809 "No CCA information for primary20 channel");
810 NS_TEST_EXPECT_MSG_GT_OR_EQ(
811 caManager->m_lastBusyEnd[WIFI_CHANLIST_PRIMARY],
812 Simulator::Now(),
813 "ChannelAccessManager on destination link not notified of CCA busy");
814 NS_TEST_EXPECT_MSG_LT(
815 caManager->m_lastBusyEnd[WIFI_CHANLIST_PRIMARY],
816 endTxTime,
817 "ChannelAccessManager on destination link notified of CCA busy until end of transmission");
818
819 // second checkpoint is after that the main PHY completed the link switch
820 Simulator::Schedule(mainPhy->GetDelayUntilIdle() + TimeStep(1),
821 &EmlsrCcaBusyTest::CheckPoint2,
822 this);
823}
824
825void
826EmlsrCcaBusyTest::CheckPoint2()
827{
828 // second checkpoint is after that the main PHY completed the link switch. The channel access
829 // manager on destination link (Y) is expected to be notified by the main PHY that medium is
830 // busy until the end of the ongoing transmission
831 const auto caManager = m_staMacs[0]->GetChannelAccessManager(m_nextMainPhyLinkId);
832 const auto endTxTime = m_staMacs[1]->GetChannelAccessManager(m_nextMainPhyLinkId)->m_lastTxEnd;
833 NS_TEST_ASSERT_MSG_EQ(caManager->m_lastBusyEnd.contains(WIFI_CHANLIST_PRIMARY),
834 true,
835 "No CCA information for primary20 channel");
836 NS_TEST_EXPECT_MSG_GT_OR_EQ(
837 caManager->m_lastBusyEnd[WIFI_CHANLIST_PRIMARY],
838 Simulator::Now(),
839 "ChannelAccessManager on destination link not notified of CCA busy");
840 NS_TEST_EXPECT_MSG_GT_OR_EQ(caManager->m_lastBusyEnd[WIFI_CHANLIST_PRIMARY],
841 endTxTime,
842 "ChannelAccessManager on destination link not notified of CCA busy "
843 "until end of transmission");
844
845 // third checkpoint is after that the aux PHY completed the link switch
846 Simulator::Schedule(m_channelSwitchDelay, &EmlsrCcaBusyTest::CheckPoint3, this);
847}
848
849void
850EmlsrCcaBusyTest::CheckPoint3()
851{
852 // third checkpoint is after that the aux PHY completed the link switch. The channel access
853 // manager on source link (X) is expected to be notified by the aux PHY that medium is
854 // busy until the end of the ongoing transmission (even if the aux PHY was not listening to
855 // link X when transmission started, its interface on link X recorded the transmission)
856 const auto caManager = m_staMacs[0]->GetChannelAccessManager(m_currMainPhyLinkId);
857 const auto endTxTime = m_staMacs[1]->GetChannelAccessManager(m_currMainPhyLinkId)->m_lastTxEnd;
858 NS_TEST_ASSERT_MSG_EQ(caManager->m_lastBusyEnd.contains(WIFI_CHANLIST_PRIMARY),
859 true,
860 "No CCA information for primary20 channel");
861 NS_TEST_EXPECT_MSG_GT_OR_EQ(caManager->m_lastBusyEnd[WIFI_CHANLIST_PRIMARY],
862 Simulator::Now(),
863 "ChannelAccessManager on source link not notified of CCA busy");
864 NS_TEST_EXPECT_MSG_GT_OR_EQ(caManager->m_lastBusyEnd[WIFI_CHANLIST_PRIMARY],
865 endTxTime,
866 "ChannelAccessManager on source link not notified of CCA busy "
867 "until end of transmission");
868}
869
870SingleLinkEmlsrTest::SingleLinkEmlsrTest(bool switchAuxPhy, bool auxPhyTxCapable)
871 : EmlsrOperationsTestBase(
872 "Check EMLSR single link operation (switchAuxPhy=" + std::to_string(switchAuxPhy) +
873 ", auxPhyTxCapable=" + std::to_string(auxPhyTxCapable) + ")"),
874 m_switchAuxPhy(switchAuxPhy),
875 m_auxPhyTxCapable(auxPhyTxCapable)
876{
877 m_mainPhyId = 0;
878 m_linksToEnableEmlsrOn = {m_mainPhyId};
879 m_nPhysPerEmlsrDevice = 1;
880 m_nEmlsrStations = 1;
881 m_nNonEmlsrStations = 0;
882
883 // channel switch delay will be also set to 64 us
884 m_paddingDelay = {MicroSeconds(64)};
885 m_transitionDelay = {MicroSeconds(64)};
886 m_establishBaDl = {0};
887 m_establishBaUl = {0};
888 m_duration = Seconds(0.5);
889}
890
891void
892SingleLinkEmlsrTest::DoSetup()
893{
894 Config::SetDefault("ns3::WifiPhy::ChannelSwitchDelay", TimeValue(MicroSeconds(64)));
895 Config::SetDefault("ns3::DefaultEmlsrManager::SwitchAuxPhy", BooleanValue(m_switchAuxPhy));
896 Config::SetDefault("ns3::EmlsrManager::AuxPhyTxCapable", BooleanValue(m_auxPhyTxCapable));
897
898 EmlsrOperationsTestBase::DoSetup();
899}
900
901void
902SingleLinkEmlsrTest::Transmit(Ptr<WifiMac> mac,
903 uint8_t phyId,
904 WifiConstPsduMap psduMap,
905 WifiTxVector txVector,
906 double txPowerW)
907{
908 EmlsrOperationsTestBase::Transmit(mac, phyId, psduMap, txVector, txPowerW);
909
910 const auto psdu = psduMap.cbegin()->second;
911 const auto& hdr = psdu->GetHeader(0);
912
913 // nothing to do in case of Beacon and CF-End frames
914 if (hdr.IsBeacon() || hdr.IsCfEnd())
915 {
916 return;
917 }
918
919 auto linkId = mac->GetLinkForPhy(phyId);
920 NS_TEST_ASSERT_MSG_EQ(linkId.has_value(),
921 true,
922 "PHY " << +phyId << " is not operating on any link");
923 NS_TEST_EXPECT_MSG_EQ(+linkId.value(), 0, "TX occurred on unexpected link " << +linkId.value());
924
925 if (m_eventIt != m_events.cend())
926 {
927 // check that the expected frame is being transmitted
928 NS_TEST_EXPECT_MSG_EQ(m_eventIt->hdrType,
929 hdr.GetType(),
930 "Unexpected MAC header type for frame #"
931 << std::distance(m_events.cbegin(), m_eventIt));
932 // perform actions/checks, if any
933 if (m_eventIt->func)
934 {
935 m_eventIt->func(psdu, txVector);
936 }
937
938 ++m_eventIt;
939 }
940}
941
942void
943SingleLinkEmlsrTest::DoRun()
944{
945 // lambda to check that AP MLD started the transition delay timer after the TX/RX of given frame
946 auto checkTransDelay = [this](Ptr<const WifiPsdu> psdu,
947 const WifiTxVector& txVector,
948 bool testUnblockedForOtherReasons,
949 const std::string& frameStr) {
950 const auto txDuration = WifiPhy::CalculateTxDuration(psdu->GetSize(),
951 txVector,
952 m_apMac->GetWifiPhy(0)->GetPhyBand());
953 Simulator::Schedule(txDuration + MicroSeconds(1), /* to account for propagation delay */
954 &SingleLinkEmlsrTest::CheckBlockedLink,
955 this,
956 m_apMac,
957 m_staMacs[0]->GetAddress(),
958 0,
959 WifiQueueBlockedReason::WAITING_EMLSR_TRANSITION_DELAY,
960 true,
961 "Checking that AP MLD blocked transmissions to single link EMLSR "
962 "client after " +
963 frameStr,
964 testUnblockedForOtherReasons);
965 };
966
967 // expected sequence of transmitted frames
968 m_events.emplace_back(WIFI_MAC_MGT_ASSOCIATION_REQUEST);
969 m_events.emplace_back(WIFI_MAC_CTL_ACK);
970 m_events.emplace_back(WIFI_MAC_MGT_ASSOCIATION_RESPONSE);
971 m_events.emplace_back(WIFI_MAC_CTL_ACK);
972
973 // EML OMN sent by EMLSR client
974 m_events.emplace_back(WIFI_MAC_MGT_ACTION,
975 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
976 // check that the address of the EMLSR client is seen as an MLD
977 // address
978 NS_TEST_EXPECT_MSG_EQ(
979 m_apMac->GetWifiRemoteStationManager(0)
980 ->GetMldAddress(m_staMacs[0]->GetAddress())
981 .has_value(),
982 true,
983 "Expected the EMLSR client address to be seen as an MLD address");
984 });
985 m_events.emplace_back(WIFI_MAC_CTL_ACK);
986 // EML OMN sent by AP MLD, protected by ICF
987 m_events.emplace_back(WIFI_MAC_CTL_TRIGGER);
988 m_events.emplace_back(WIFI_MAC_CTL_CTS);
989 m_events.emplace_back(WIFI_MAC_MGT_ACTION);
990 m_events.emplace_back(WIFI_MAC_CTL_ACK,
991 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
992 // check that EMLSR mode has been enabled on link 0 of EMLSR client
993 NS_TEST_EXPECT_MSG_EQ(
994 m_staMacs[0]->IsEmlsrLink(0),
995 true,
996 "Expected EMLSR mode to be enabled on link 0 of EMLSR client");
997 });
998
999 // Establishment of BA agreement for downlink direction
1000
1001 // ADDBA REQUEST sent by AP MLD (protected by ICF)
1002 m_events.emplace_back(WIFI_MAC_CTL_TRIGGER);
1003 m_events.emplace_back(WIFI_MAC_CTL_CTS);
1004 m_events.emplace_back(WIFI_MAC_MGT_ACTION);
1005 m_events.emplace_back(WIFI_MAC_CTL_ACK,
1006 [=](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
1007 // check that transition delay is started after reception of Ack
1008 checkTransDelay(psdu, txVector, false, "DL ADDBA REQUEST");
1009 });
1010
1011 // ADDBA RESPONSE sent by EMLSR client (no RTS because it is sent by main PHY)
1012 m_events.emplace_back(WIFI_MAC_MGT_ACTION);
1013 m_events.emplace_back(WIFI_MAC_CTL_ACK,
1014 [=](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
1015 // check that transition delay is started after reception of Ack
1016 checkTransDelay(psdu, txVector, true, "DL ADDBA RESPONSE");
1017 });
1018
1019 // Downlink QoS data frame that triggered BA agreement establishment
1020 m_events.emplace_back(WIFI_MAC_CTL_TRIGGER);
1021 m_events.emplace_back(WIFI_MAC_CTL_CTS);
1022 m_events.emplace_back(WIFI_MAC_QOSDATA);
1023 m_events.emplace_back(WIFI_MAC_CTL_BACKRESP,
1024 [=](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
1025 // check that transition delay is started after reception of BlockAck
1026 checkTransDelay(psdu, txVector, true, "DL QoS Data");
1027 });
1028
1029 // Establishment of BA agreement for uplink direction
1030
1031 // ADDBA REQUEST sent by EMLSR client (no RTS because it is sent by main PHY)
1032 m_events.emplace_back(WIFI_MAC_MGT_ACTION);
1033 m_events.emplace_back(WIFI_MAC_CTL_ACK,
1034 [=](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
1035 // check that transition delay is started after reception of Ack
1036 checkTransDelay(psdu, txVector, false, "UL ADDBA REQUEST");
1037 });
1038 // ADDBA RESPONSE sent by AP MLD (protected by ICF)
1039 m_events.emplace_back(WIFI_MAC_CTL_TRIGGER);
1040 m_events.emplace_back(WIFI_MAC_CTL_CTS);
1041 m_events.emplace_back(WIFI_MAC_MGT_ACTION);
1042 m_events.emplace_back(WIFI_MAC_CTL_ACK,
1043 [=](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
1044 // check that transition delay is started after reception of Ack
1045 checkTransDelay(psdu, txVector, true, "UL ADDBA RESPONSE");
1046 });
1047
1048 // Uplink QoS data frame that triggered BA agreement establishment
1049 m_events.emplace_back(WIFI_MAC_QOSDATA);
1050 m_events.emplace_back(WIFI_MAC_CTL_BACKRESP,
1051 [=](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) {
1052 // check that transition delay is started after reception of BlockAck
1053 checkTransDelay(psdu, txVector, true, "UL QoS Data");
1054 });
1055
1056 m_eventIt = m_events.cbegin();
1057
1058 Simulator::Stop(m_duration);
1059 Simulator::Run();
1060
1061 NS_TEST_EXPECT_MSG_EQ((m_eventIt == m_events.cend()), true, "Not all events took place");
1062
1063 Simulator::Destroy();
1064}
1065
1066EmlsrIcfSentDuringMainPhySwitchTest::EmlsrIcfSentDuringMainPhySwitchTest()
1067 : EmlsrOperationsTestBase("Check ICF reception while main PHY is switching")
1068{
1069 m_mainPhyId = 0;
1070 m_linksToEnableEmlsrOn = {0, 1, 2};
1071 m_nEmlsrStations = 1;
1072 m_nNonEmlsrStations = 0;
1073
1074 // channel switch delay will be also set to 64 us
1075 m_paddingDelay = {MicroSeconds(128)};
1076 m_transitionDelay = {MicroSeconds(64)};
1077 m_establishBaDl = {0, 3};
1078 m_establishBaUl = {0, 3};
1079 m_duration = Seconds(0.5);
1080}
1081
1082void
1083EmlsrIcfSentDuringMainPhySwitchTest::DoSetup()
1084{
1085 // channel switch delay will be modified during test scenarios
1086 Config::SetDefault("ns3::WifiPhy::ChannelSwitchDelay", TimeValue(MicroSeconds(64)));
1087 Config::SetDefault("ns3::WifiPhy::NotifyMacHdrRxEnd", BooleanValue(true));
1088 Config::SetDefault("ns3::DefaultEmlsrManager::SwitchAuxPhy", BooleanValue(false));
1089 Config::SetDefault("ns3::EmlsrManager::AuxPhyTxCapable", BooleanValue(false));
1090 // AP MLD transmits both TID 0 and TID 3 on link 1
1091 Config::SetDefault("ns3::EhtConfiguration::TidToLinkMappingDl", StringValue("0,3 1"));
1092 // EMLSR client transmits TID 0 on link 1 and TID 3 on link 2
1093 Config::SetDefault("ns3::EhtConfiguration::TidToLinkMappingUl",
1094 StringValue("0 1; 3 " + std::to_string(m_linkIdForTid3)));
1095
1096 EmlsrOperationsTestBase::DoSetup();
1097
1098 m_staMacs[0]->TraceConnectWithoutContext(
1099 "EmlsrLinkSwitch",
1100 MakeCallback(&EmlsrIcfSentDuringMainPhySwitchTest::EmlsrLinkSwitchCb, this));
1101
1102 for (uint8_t i = 0; i < m_staMacs[0]->GetDevice()->GetNPhys(); ++i)
1103 {
1104 m_bands.at(i) = m_staMacs[0]->GetDevice()->GetPhy(i)->GetBand(MHz_u{20}, 0);
1105 }
1106}
1107
1108void
1109EmlsrIcfSentDuringMainPhySwitchTest::GenerateNoiseOnAllLinks(Ptr<WifiMac> mac, Time duration)
1110{
1111 for (const auto linkId : mac->GetLinkIds())
1112 {
1113 auto phy = DynamicCast<SpectrumWifiPhy>(mac->GetWifiPhy(linkId));
1114 NS_TEST_ASSERT_MSG_NE(phy, nullptr, "No PHY on link " << +linkId);
1115 const auto txPower = phy->GetPower(1) + phy->GetTxGain();
1116
1117 auto psd = Create<SpectrumValue>(phy->GetCurrentInterface()->GetRxSpectrumModel());
1118 *psd = txPower;
1119
1120 auto spectrumSignalParams = Create<SpectrumSignalParameters>();
1121 spectrumSignalParams->duration = duration;
1122 spectrumSignalParams->txPhy = phy->GetCurrentInterface();
1123 spectrumSignalParams->txAntenna = phy->GetAntenna();
1124 spectrumSignalParams->psd = psd;
1125
1126 phy->StartRx(spectrumSignalParams, phy->GetCurrentInterface());
1127 }
1128}
1129
1130void
1131EmlsrIcfSentDuringMainPhySwitchTest::CheckInDeviceInterference(const std::string& frameTypeStr,
1132 uint8_t linkId,
1133 Time duration)
1134{
1135 for (const auto& phy : m_staMacs[0]->GetDevice()->GetPhys())
1136 {
1137 // ignore the PHY that is transmitting
1138 if (m_staMacs[0]->GetLinkForPhy(phy) == linkId)
1139 {
1140 continue;
1141 }
1142
1143 PointerValue ptr;
1144 phy->GetAttribute("InterferenceHelper", ptr);
1145 auto interferenceHelper = ptr.Get<InterferenceHelper>();
1146
1147 // we need to check that all the PHY interfaces recorded the in-device interference,
1148 // hence we consider a 20 MHz sub-band of the frequency channels of all the links
1149 for (uint8_t i = 0; i < m_staMacs[0]->GetNLinks(); ++i)
1150 {
1151 auto energyDuration =
1152 interferenceHelper->GetEnergyDuration(DbmToW(phy->GetCcaEdThreshold()),
1153 m_bands.at(i));
1154
1155 NS_TEST_EXPECT_MSG_EQ(
1156 energyDuration,
1157 duration,
1158 m_testStr << ", " << frameTypeStr << ": Unexpected energy duration for PHY "
1159 << +phy->GetPhyId() << " in the band corresponding to link " << +i);
1160 }
1161 }
1162}
1163
1164void
1165EmlsrIcfSentDuringMainPhySwitchTest::Transmit(Ptr<WifiMac> mac,
1166 uint8_t phyId,
1167 WifiConstPsduMap psduMap,
1168 WifiTxVector txVector,
1169 double txPowerW)
1170{
1171 EmlsrOperationsTestBase::Transmit(mac, phyId, psduMap, txVector, txPowerW);
1172
1173 const auto psdu = psduMap.cbegin()->second;
1174 const auto& hdr = psdu->GetHeader(0);
1175
1176 // nothing to do before setup is completed
1177 if (!m_setupDone)
1178 {
1179 return;
1180 }
1181
1182 auto linkId = mac->GetLinkForPhy(phyId);
1183 NS_TEST_ASSERT_MSG_EQ(linkId.has_value(),
1184 true,
1185 "PHY " << +phyId << " is not operating on any link");
1186
1187 if (!m_events.empty())
1188 {
1189 // check that the expected frame is being transmitted
1190 NS_TEST_EXPECT_MSG_EQ(m_events.front().hdrType,
1191 hdr.GetType(),
1192 "Unexpected MAC header type for frame #" << ++m_processedEvents);
1193 // perform actions/checks, if any
1194 if (m_events.front().func)
1195 {
1196 m_events.front().func(psdu, txVector, linkId.value());
1197 }
1198
1199 m_events.pop_front();
1200 }
1201}
1202
1203void
1209
1210void
1211EmlsrIcfSentDuringMainPhySwitchTest::DoRun()
1212{
1213 Simulator::Stop(m_duration);
1214 Simulator::Run();
1215
1216 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
1217
1218 Simulator::Destroy();
1219}
1220
1221void
1222EmlsrIcfSentDuringMainPhySwitchTest::EmlsrLinkSwitchCb(uint8_t linkId,
1223 Ptr<WifiPhy> phy,
1224 bool connected)
1225{
1226 if (!m_setupDone)
1227 {
1228 return;
1229 }
1230
1231 if (!connected)
1232 {
1233 const auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
1234 NS_LOG_DEBUG("Main PHY leaving link " << +linkId << ", switch delay "
1235 << mainPhy->GetChannelSwitchDelay().As(Time::US)
1236 << "\n");
1237 m_switchFrom = MainPhySwitchInfo{Simulator::Now(), linkId};
1238 m_switchTo.reset();
1239 }
1240 else
1241 {
1242 NS_LOG_DEBUG((phy->GetPhyId() == m_mainPhyId ? "Main" : "Aux")
1243 << " PHY connected to link " << +linkId << "\n");
1244 if (phy->GetPhyId() == m_mainPhyId)
1245 {
1246 m_switchTo = MainPhySwitchInfo{Simulator::Now(), linkId};
1247 m_switchFrom.reset();
1248 }
1249 }
1250}
1251
1252void
1253EmlsrIcfSentDuringMainPhySwitchTest::RunOne()
1254{
1255 const auto useMacHdrInfo = ((m_testIndex & 0b001) != 0);
1256 const auto interruptSwitch = ((m_testIndex & 0b010) != 0);
1257 const auto switchToOtherLink = ((m_testIndex & 0b100) != 0);
1258
1259 const auto keepMainPhyAfterDlTxop = useMacHdrInfo;
1260
1261 m_staMacs[0]->GetEmlsrManager()->SetAttribute("UseNotifiedMacHdr", BooleanValue(useMacHdrInfo));
1262 auto advEmlsrMgr = DynamicCast<AdvancedEmlsrManager>(m_staMacs[0]->GetEmlsrManager());
1263 NS_TEST_ASSERT_MSG_NE(advEmlsrMgr, nullptr, "Advanced EMLSR Manager required");
1264 advEmlsrMgr->SetAttribute("InterruptSwitch", BooleanValue(interruptSwitch));
1265 advEmlsrMgr->SetAttribute("KeepMainPhyAfterDlTxop", BooleanValue(keepMainPhyAfterDlTxop));
1266
1267 m_testStr = "SwitchToOtherLink=" + std::to_string(switchToOtherLink) +
1268 ", InterruptSwitch=" + std::to_string(interruptSwitch) +
1269 ", UseMacHdrInfo=" + std::to_string(useMacHdrInfo) +
1270 ", KeepMainPhyAfterDlTxop=" + std::to_string(keepMainPhyAfterDlTxop) +
1271 ", ChannelSwitchDurationIdx=" + std::to_string(m_csdIndex);
1272 NS_LOG_INFO("Starting test: " << m_testStr << "\n");
1273
1274 // generate noise on all the links of the AP MLD and the EMLSR client, so as to align the EDCA
1275 // backoff boundaries
1276 Simulator::Schedule(MilliSeconds(3), [=, this]() {
1277 GenerateNoiseOnAllLinks(m_apMac, MicroSeconds(500));
1278 GenerateNoiseOnAllLinks(m_staMacs[0], MicroSeconds(500));
1279 });
1280
1281 // wait some more time to ensure that backoffs count down to zero and then generate a packet
1282 // at the AP MLD and a packet at the EMLSR client. AP MLD and EMLSR client are expected to get
1283 // access at the same time because backoff counter is zero and EDCA boundaries are aligned
1284 Simulator::Schedule(MilliSeconds(5), [=, this]() {
1285 uint8_t prio = (switchToOtherLink ? 3 : 0);
1286 m_apMac->GetDevice()->GetNode()->AddApplication(GetApplication(DOWNLINK, 0, 1, 500, prio));
1287 m_staMacs[0]->GetDevice()->GetNode()->AddApplication(
1288 GetApplication(UPLINK, 0, 1, 500, prio));
1289 });
1290
1291 m_switchFrom.reset();
1292 m_switchTo.reset();
1293
1294 m_events.emplace_back(
1295 WIFI_MAC_CTL_TRIGGER,
1296 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1297 const auto phyHdrDuration = WifiPhy::CalculatePhyPreambleAndHeaderDuration(txVector);
1298 const auto txDuration =
1299 WifiPhy::CalculateTxDuration(psdu,
1300 txVector,
1301 m_apMac->GetWifiPhy(linkId)->GetPhyBand());
1302 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
1303
1304 // compute channel switch delay based on the scenario to test
1305 Time channelSwitchDelay{0};
1306 const auto margin = MicroSeconds(2);
1307
1308 switch (m_csdIndex)
1309 {
1310 case DURING_PREAMBLE_DETECTION:
1311 channelSwitchDelay = MicroSeconds(1);
1312 break;
1313 case BEFORE_PHY_HDR_END:
1314 channelSwitchDelay = phyHdrDuration - margin;
1315 break;
1316 case BEFORE_MAC_HDR_END:
1317 channelSwitchDelay = phyHdrDuration + margin;
1318 break;
1319 case BEFORE_MAC_PAYLOAD_END:
1320 channelSwitchDelay = txDuration - m_paddingDelay.at(0) - margin;
1321 break;
1322 case BEFORE_PADDING_END:
1323 channelSwitchDelay = txDuration - m_paddingDelay.at(0) + margin;
1324 break;
1325 default:;
1326 }
1327
1328 NS_TEST_ASSERT_MSG_EQ(channelSwitchDelay.IsStrictlyPositive(),
1329 true,
1330 m_testStr << ": Channel switch delay is not strictly positive ("
1331 << channelSwitchDelay.As(Time::US) << ")");
1332 NS_TEST_ASSERT_MSG_LT(channelSwitchDelay,
1333 m_paddingDelay.at(0),
1334 m_testStr
1335 << ": Channel switch delay is greater than padding delay");
1336 // set channel switch delay
1337 mainPhy->SetAttribute("ChannelSwitchDelay", TimeValue(channelSwitchDelay));
1338
1339 const auto startTx = Simulator::Now();
1340
1341 // check that main PHY has started switching
1342 Simulator::ScheduleNow([=, this]() {
1343 NS_TEST_ASSERT_MSG_EQ(m_switchFrom.has_value(),
1344 true,
1345 m_testStr << ": Main PHY did not start switching");
1346 NS_TEST_EXPECT_MSG_EQ(+m_switchFrom->linkId,
1347 +m_mainPhyId,
1348 m_testStr << ": Main PHY did not left the preferred link");
1349 NS_TEST_EXPECT_MSG_EQ(m_switchFrom->time,
1350 startTx,
1351 m_testStr
1352 << ": Main PHY did not start switching at ICF TX start");
1353 });
1354
1355 // check what happens after channel switch is completed
1356 Simulator::Schedule(channelSwitchDelay + TimeStep(1), [=, this]() {
1357 // sanity check that the channel switch delay was computed correctly
1358 auto auxPhy = m_staMacs[0]->GetWifiPhy(linkId);
1359 auto fem = m_staMacs[0]->GetFrameExchangeManager(linkId);
1360 switch (m_csdIndex)
1361 {
1362 case BEFORE_PADDING_END:
1363 NS_TEST_EXPECT_MSG_GT(
1364 Simulator::Now(),
1365 startTx + txDuration - m_paddingDelay.at(0),
1366 m_testStr << ": Channel switch terminated before padding start");
1367 [[fallthrough]];
1368 case BEFORE_MAC_PAYLOAD_END:
1369 if (useMacHdrInfo)
1370 {
1371 NS_TEST_EXPECT_MSG_EQ(fem->GetReceivedMacHdr().has_value(),
1372 true,
1373 m_testStr << ": Channel switch terminated before "
1374 "MAC header info is received");
1375 }
1376 [[fallthrough]];
1377 case BEFORE_MAC_HDR_END:
1378 NS_TEST_EXPECT_MSG_EQ(fem->GetOngoingRxInfo().has_value(),
1379 true,
1380 m_testStr << ": Channel switch terminated before "
1381 "receiving RXSTART indication");
1382 break;
1383 case BEFORE_PHY_HDR_END:
1384 NS_TEST_EXPECT_MSG_EQ(auxPhy->GetInfoIfRxingPhyHeader().has_value(),
1385 true,
1386 m_testStr << ": Expected to be receiving the PHY header");
1387 break;
1388 case DURING_PREAMBLE_DETECTION:
1389 NS_TEST_EXPECT_MSG_EQ(auxPhy->GetTimeToPreambleDetectionEnd().has_value(),
1390 true,
1391 m_testStr
1392 << ": Expected to be in preamble detection period");
1393 default:
1394 NS_ABORT_MSG("Unexpected channel switch duration index");
1395 }
1396
1397 // if the main PHY switched to the same link on which the ICF is being received,
1398 // connecting the main PHY to the link is postponed until the end of the ICF, hence
1399 // the main PHY is not operating on any link at this time;
1400 // if the main PHY switched to another link, it was connected to that link but
1401 // the UL TXOP did not start because, at the end of the NAV and CCA busy in the last
1402 // PIFS check, it was detected that a frame which could be an ICF was being received
1403 // on another link)
1404 NS_TEST_EXPECT_MSG_EQ(m_staMacs[0]->GetLinkForPhy(m_mainPhyId).has_value(),
1405 switchToOtherLink,
1406 m_testStr
1407 << ": Main PHY not expected to be connected to a link");
1408
1409 if (switchToOtherLink)
1410 {
1411 NS_TEST_EXPECT_MSG_EQ(
1412 +m_staMacs[0]->GetLinkForPhy(m_mainPhyId).value(),
1413 +m_linkIdForTid3,
1414 m_testStr << ": Main PHY did not left the link on which TID 3 is mapped");
1415 }
1416 });
1417
1418 // check what happens when the ICF ends
1419 Simulator::Schedule(txDuration + TimeStep(1), [=, this]() {
1420 // if the main PHY switched to the same link on which the ICF has been received,
1421 // it has now been connected to that link; if the main PHY switched to another
1422 // link and there was not enough time for the main PHY to start switching to the
1423 // link on which the ICF has been received at the start of the padding, the ICF
1424 // has been dropped and the main PHY stayed on the preferred link
1425
1426 const auto id = m_staMacs[0]->GetLinkForPhy(m_mainPhyId);
1427 NS_TEST_EXPECT_MSG_EQ(id.has_value(),
1428 true,
1429 m_testStr << ": Main PHY expected to be connected to a link");
1430 NS_TEST_EXPECT_MSG_EQ(+id.value(),
1431 +linkId,
1432 m_testStr << ": Main PHY connected to an unexpected link");
1433
1434 NS_TEST_ASSERT_MSG_EQ(m_switchTo.has_value(),
1435 true,
1436 m_testStr << ": Main PHY was not connected to a link");
1437 NS_TEST_EXPECT_MSG_EQ(+m_switchTo->linkId,
1438 +linkId,
1439 m_testStr
1440 << ": Main PHY was not connected to the expected link");
1441 NS_TEST_EXPECT_MSG_EQ(m_switchTo->time,
1442 Simulator::Now() - TimeStep(1),
1443 m_testStr << ": Main PHY was not connected at ICF TX end");
1444 });
1445 });
1446
1447 m_events.emplace_back(
1448 WIFI_MAC_CTL_CTS,
1449 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1450 const auto id = m_staMacs[0]->GetLinkForPhy(m_mainPhyId);
1451 NS_TEST_EXPECT_MSG_EQ(id.has_value(),
1452 true,
1453 m_testStr << ": Main PHY expected to be connected to a link");
1454 NS_TEST_EXPECT_MSG_EQ(+id.value(),
1455 +linkId,
1456 m_testStr
1457 << ": Main PHY expected to be connected to same link as ICF");
1458 Simulator::ScheduleNow([=, this]() {
1459 NS_TEST_EXPECT_MSG_EQ(m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId)->IsStateTx(),
1460 true,
1461 m_testStr << ": Main PHY expected to be transmitting");
1462 });
1463
1464 const auto txDuration =
1465 WifiPhy::CalculateTxDuration(psdu,
1466 txVector,
1467 m_staMacs[0]->GetWifiPhy(linkId)->GetPhyBand());
1468
1469 Simulator::ScheduleNow([=, this]() {
1470 CheckInDeviceInterference(m_testStr + ", CTS", linkId, txDuration);
1471 });
1472 });
1473
1474 m_events.emplace_back(WIFI_MAC_QOSDATA);
1475 m_events.emplace_back(
1476 WIFI_MAC_CTL_ACK,
1477 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1478 const auto txDuration =
1479 WifiPhy::CalculateTxDuration(psdu,
1480 txVector,
1481 m_staMacs[0]->GetWifiPhy(linkId)->GetPhyBand());
1482
1483 Simulator::ScheduleNow([=, this]() {
1484 CheckInDeviceInterference(m_testStr + ", ACK", linkId, txDuration);
1485 });
1486 // check the KeepMainPhyAfterDlTxop attribute
1487 Simulator::Schedule(txDuration + TimeStep(1), [=, this]() {
1488 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
1489 auto shouldSwitch = (!keepMainPhyAfterDlTxop || switchToOtherLink);
1490 NS_TEST_EXPECT_MSG_EQ(mainPhy->IsStateSwitching(),
1491 shouldSwitch,
1492 m_testStr << ": Main PHY should "
1493 << (shouldSwitch ? "" : "not")
1494 << " be switching back after DL TXOP end");
1495 });
1496 });
1497
1498 // Uplink TXOP
1499 m_events.emplace_back(
1500 WIFI_MAC_QOSDATA,
1501 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1502 const auto txDuration =
1503 WifiPhy::CalculateTxDuration(psdu,
1504 txVector,
1505 m_staMacs[0]->GetWifiPhy(linkId)->GetPhyBand());
1506
1507 Simulator::ScheduleNow([=, this]() {
1508 CheckInDeviceInterference(m_testStr + ", QoS Data", linkId, txDuration);
1509 });
1510 });
1511
1512 m_events.emplace_back(
1513 WIFI_MAC_CTL_ACK,
1514 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1515 const auto txDuration =
1516 WifiPhy::CalculateTxDuration(psdu,
1517 txVector,
1518 m_staMacs[0]->GetWifiPhy(linkId)->GetPhyBand());
1519 // check that main PHY switches back after UL TXOP
1520 Simulator::Schedule(txDuration + TimeStep(1), [=, this]() {
1521 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
1522 NS_TEST_EXPECT_MSG_EQ(
1523 mainPhy->IsStateSwitching(),
1524 true,
1525 m_testStr << ": Main PHY should be switching back after UL TXOP end");
1526 });
1527 // Continue with the next test scenario
1528 Simulator::Schedule(MilliSeconds(2), [=, this]() {
1529 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
1530 m_csdIndex = static_cast<ChannelSwitchEnd>(static_cast<uint8_t>(m_csdIndex) + 1);
1531 if (m_csdIndex == CSD_COUNT)
1532 {
1533 ++m_testIndex;
1534 m_csdIndex = BEFORE_PHY_HDR_END;
1535 }
1536
1537 if (m_testIndex < 8)
1538 {
1539 RunOne();
1540 }
1541 });
1542 });
1543}
1544
1545EmlsrSwitchMainPhyBackTest::EmlsrSwitchMainPhyBackTest()
1546 : EmlsrOperationsTestBase("Check handling of the switch main PHY back timer")
1547{
1548 m_mainPhyId = 2;
1549 m_linksToEnableEmlsrOn = {0, 1, 2};
1550 m_nEmlsrStations = 1;
1551 m_nNonEmlsrStations = 0;
1552
1553 // channel switch delay will be also set to 64 us
1554 m_paddingDelay = {MicroSeconds(64)};
1555 m_transitionDelay = {MicroSeconds(64)};
1556 m_establishBaDl = {0};
1557 m_establishBaUl = {0, 4};
1558 m_duration = Seconds(0.5);
1559}
1560
1561void
1562EmlsrSwitchMainPhyBackTest::DoSetup()
1563{
1564 Config::SetDefault("ns3::WifiPhy::ChannelSwitchDelay", TimeValue(MicroSeconds(64)));
1565 Config::SetDefault("ns3::WifiPhy::NotifyMacHdrRxEnd", BooleanValue(true));
1566 Config::SetDefault("ns3::DefaultEmlsrManager::SwitchAuxPhy", BooleanValue(false));
1567 Config::SetDefault("ns3::EmlsrManager::AuxPhyTxCapable", BooleanValue(false));
1568 // Use only link 1 for DL and UL traffic
1569 std::string mapping =
1570 "0 " + std::to_string(m_linkIdForTid0) + "; 4 " + std::to_string(m_linkIdForTid4);
1571 Config::SetDefault("ns3::EhtConfiguration::TidToLinkMappingDl", StringValue(mapping));
1572 Config::SetDefault("ns3::EhtConfiguration::TidToLinkMappingUl", StringValue(mapping));
1573 Config::SetDefault("ns3::EmlsrManager::AuxPhyMaxModClass", StringValue("HT"));
1574 Config::SetDefault("ns3::AdvancedEmlsrManager::UseAuxPhyCca", BooleanValue(true));
1575
1576 EmlsrOperationsTestBase::DoSetup();
1577
1578 WifiMacHeader hdr(WIFI_MAC_QOSDATA);
1579 hdr.SetAddr1(Mac48Address::GetBroadcast());
1580 hdr.SetAddr2(m_apMac->GetFrameExchangeManager(m_linkIdForTid0)->GetAddress());
1581 hdr.SetAddr3(m_apMac->GetAddress());
1582 hdr.SetDsFrom();
1583 hdr.SetDsNotTo();
1584 hdr.SetQosTid(0);
1585
1586 m_bcastFrame = Create<WifiMpdu>(Create<Packet>(1000), hdr);
1587}
1588
1589void
1590EmlsrSwitchMainPhyBackTest::Transmit(Ptr<WifiMac> mac,
1591 uint8_t phyId,
1592 WifiConstPsduMap psduMap,
1593 WifiTxVector txVector,
1594 double txPowerW)
1595{
1596 EmlsrOperationsTestBase::Transmit(mac, phyId, psduMap, txVector, txPowerW);
1597
1598 const auto psdu = psduMap.cbegin()->second;
1599 const auto& hdr = psdu->GetHeader(0);
1600
1601 // nothing to do before setup is completed
1602 if (!m_setupDone)
1603 {
1604 return;
1605 }
1606
1607 auto linkId = mac->GetLinkForPhy(phyId);
1608 NS_TEST_ASSERT_MSG_EQ(linkId.has_value(),
1609 true,
1610 "PHY " << +phyId << " is not operating on any link");
1611
1612 if (!m_events.empty())
1613 {
1614 // check that the expected frame is being transmitted
1615 NS_TEST_EXPECT_MSG_EQ(m_events.front().hdrType,
1616 hdr.GetType(),
1617 "Unexpected MAC header type for frame #" << ++m_processedEvents);
1618 // perform actions/checks, if any
1619 if (m_events.front().func)
1620 {
1621 m_events.front().func(psdu, txVector, linkId.value());
1622 }
1623
1624 m_events.pop_front();
1625 }
1626}
1627
1628void
1634
1635void
1636EmlsrSwitchMainPhyBackTest::DoRun()
1637{
1638 Simulator::Stop(m_duration);
1639 Simulator::Run();
1640
1641 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
1642
1643 Simulator::Destroy();
1644}
1645
1646void
1647EmlsrSwitchMainPhyBackTest::MainPhySwitchInfoCallback(std::size_t index,
1648 const EmlsrMainPhySwitchTrace& info)
1649{
1650 EmlsrOperationsTestBase::MainPhySwitchInfoCallback(index, info);
1651
1652 if (!m_setupDone)
1653 {
1654 return;
1655 }
1656
1657 if (!m_dlPktDone && info.GetName() == "UlTxopAuxPhyNotTxCapable")
1658 {
1659 NS_LOG_INFO("Main PHY starts switching\n");
1660 const auto delay =
1661 static_cast<TestScenario>(m_testIndex) <= RXSTART_WHILE_SWITCH_INTERRUPT
1662 ? Time{0}
1663 : MicroSeconds(30); // greater than duration of PHY header of non-HT PPDU
1664 Simulator::Schedule(delay,
1665 [=, this]() { m_apMac->GetQosTxop(AC_BE)->Queue(m_bcastFrame); });
1666 return;
1667 }
1668
1669 // lambda to generate a frame with TID 4 and to handle the corresponding frames
1670 auto genTid4Frame = [=, this]() {
1671 m_dlPktDone = true;
1672
1673 // in 5 microseconds, while still switching, generate a packet with TID 4, which causes a
1674 // channel access request on link 0; if switching can be interrupted, the main PHY starts
1675 // switching to link 0 as soon as channel access is gained on link 0
1676 Simulator::Schedule(MicroSeconds(5), [=, this]() {
1677 m_staMacs[0]->GetDevice()->GetNode()->AddApplication(
1678 GetApplication(UPLINK, 0, 1, 500, 4));
1679 // channel access can be obtained within a slot due to slot alignment
1680 Simulator::Schedule(
1681 m_apMac->GetWifiPhy(m_linkIdForTid4)->GetSlot() + TimeStep(1),
1682 [=, this]() {
1683 auto advEmlsrMgr =
1684 DynamicCast<AdvancedEmlsrManager>(m_staMacs[0]->GetEmlsrManager());
1685
1686 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_mainPhySwitchInfo.disconnected,
1687 true,
1688 "Expected the main PHY to be switching");
1689 NS_TEST_EXPECT_MSG_EQ(
1690 +advEmlsrMgr->m_mainPhySwitchInfo.to,
1691 +(advEmlsrMgr->m_interruptSwitching ? m_linkIdForTid4 : m_mainPhyId),
1692 "Test index " << +m_testIndex << ": Main PHY is switching to wrong link");
1693 });
1694 });
1695 InsertEventsForQosTid4();
1696 };
1697
1698 if (m_expectedMainPhySwitchBackTime == Simulator::Now() &&
1699 info.GetName() == "TxopNotGainedOnAuxPhyLink")
1700 {
1701 NS_LOG_INFO("Main PHY switches back\n");
1702
1703 const auto& traceInfo = static_cast<const EmlsrSwitchMainPhyBackTrace&>(info);
1704
1705 switch (static_cast<TestScenario>(m_testIndex))
1706 {
1707 case RXSTART_WHILE_SWITCH_NO_INTERRUPT:
1708 case RXSTART_WHILE_SWITCH_INTERRUPT:
1709 NS_TEST_EXPECT_MSG_EQ((traceInfo.elapsed.IsStrictlyPositive() &&
1710 traceInfo.elapsed < m_switchMainPhyBackDelay),
1711 true,
1712 "Unexpected value for the elapsed field");
1713 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.has_value(),
1714 true,
1715 "earlySwitchReason should hold a value");
1716 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.value(),
1717 WifiExpectedAccessReason::RX_END,
1718 "Unexpected earlySwitchReason value");
1719 NS_TEST_EXPECT_MSG_EQ(traceInfo.isSwitching, true, "Unexpected value for isSwitching");
1720 break;
1721
1722 case RXSTART_AFTER_SWITCH_HT_PPDU:
1723 NS_TEST_EXPECT_MSG_EQ((traceInfo.elapsed.IsStrictlyPositive() &&
1724 traceInfo.elapsed < m_switchMainPhyBackDelay),
1725 true,
1726 "Unexpected value for the elapsed field");
1727 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.has_value(),
1728 true,
1729 "earlySwitchReason should hold a value");
1730 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.value(),
1731 WifiExpectedAccessReason::BUSY_END,
1732 "Unexpected earlySwitchReason value");
1733 NS_TEST_EXPECT_MSG_EQ(traceInfo.isSwitching, false, "Unexpected value for isSwitching");
1734 break;
1735
1736 case NON_HT_PPDU_USE_MAC_HDR:
1737 NS_TEST_EXPECT_MSG_EQ((traceInfo.elapsed.IsStrictlyPositive() &&
1738 traceInfo.elapsed < m_switchMainPhyBackDelay),
1739 true,
1740 "Unexpected value for the elapsed field");
1741 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.has_value(),
1742 true,
1743 "earlySwitchReason should hold a value");
1744 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.value(),
1745 WifiExpectedAccessReason::RX_END,
1746 "Unexpected earlySwitchReason value");
1747 NS_TEST_EXPECT_MSG_EQ(traceInfo.isSwitching, false, "Unexpected value for isSwitching");
1748 break;
1749
1750 case LONG_SWITCH_BACK_DELAY_DONT_USE_MAC_HDR:
1751 NS_TEST_EXPECT_MSG_EQ((traceInfo.elapsed.IsStrictlyPositive() &&
1752 traceInfo.elapsed >= m_switchMainPhyBackDelay),
1753 true,
1754 "Unexpected value for the elapsed field");
1755 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.has_value(),
1756 true,
1757 "earlySwitchReason should hold a value");
1758 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.value(),
1759 WifiExpectedAccessReason::BACKOFF_END,
1760 "Unexpected earlySwitchReason value");
1761 NS_TEST_EXPECT_MSG_EQ(traceInfo.isSwitching, false, "Unexpected value for isSwitching");
1762 break;
1763
1764 case LONG_SWITCH_BACK_DELAY_USE_MAC_HDR:
1765 NS_TEST_EXPECT_MSG_EQ((traceInfo.elapsed.IsStrictlyPositive() &&
1766 traceInfo.elapsed < m_switchMainPhyBackDelay),
1767 true,
1768 "Unexpected value for the elapsed field");
1769 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.has_value(),
1770 true,
1771 "earlySwitchReason should hold a value");
1772 NS_TEST_EXPECT_MSG_EQ(traceInfo.earlySwitchReason.value(),
1773 WifiExpectedAccessReason::BACKOFF_END,
1774 "Unexpected earlySwitchReason value");
1775 NS_TEST_EXPECT_MSG_EQ(traceInfo.isSwitching, false, "Unexpected value for isSwitching");
1776 break;
1777
1778 default:
1779 NS_TEST_ASSERT_MSG_EQ(true, false, "Unexpected scenario: " << +m_testIndex);
1780 }
1781
1782 genTid4Frame();
1783 }
1784
1785 if (m_expectedMainPhySwitchBackTime == Simulator::Now() && info.GetName() == "TxopEnded")
1786 {
1787 NS_LOG_INFO("Main PHY switches back\n");
1788
1789 NS_TEST_EXPECT_MSG_EQ(+m_testIndex,
1790 +static_cast<uint8_t>(NON_HT_PPDU_DONT_USE_MAC_HDR),
1791 "Unexpected TxopEnded reason for switching main PHY back");
1792
1793 genTid4Frame();
1794 }
1795}
1796
1797void
1798EmlsrSwitchMainPhyBackTest::InsertEventsForQosTid4()
1799{
1800 const auto testIndex = static_cast<TestScenario>(m_testIndex);
1801 std::list<Events> events;
1802
1803 events.emplace_back(
1804 WIFI_MAC_QOSDATA,
1805 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1806 NS_TEST_EXPECT_MSG_EQ(+linkId,
1807 +m_linkIdForTid4,
1808 "Unicast frame with TID 4 transmitted on wrong link");
1809 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr1(),
1810 m_apMac->GetFrameExchangeManager(linkId)->GetAddress(),
1811 "Unexpected RA for the unicast frame with TID 4");
1812 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr2(),
1813 m_staMacs[0]->GetFrameExchangeManager(linkId)->GetAddress(),
1814 "Unexpected TA for the unicast frame with TID 4");
1815 NS_TEST_EXPECT_MSG_EQ(+(*psdu->GetTids().cbegin()),
1816 4,
1817 "Expected a unicast frame with TID 4");
1818 // if switching can be interrupted, the frame with TID 4 is transmitted as soon as
1819 // the main PHY completes the switching to link 0
1820 if (auto advEmlsrMgr =
1821 DynamicCast<AdvancedEmlsrManager>(m_staMacs[0]->GetEmlsrManager());
1822 advEmlsrMgr->m_interruptSwitching)
1823 {
1824 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
1825 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_mainPhySwitchInfo.start +
1826 mainPhy->GetChannelSwitchDelay(),
1827 Simulator::Now(),
1828 "Expected TX to start at main PHY switch end");
1829 }
1830 });
1831
1832 events.emplace_back(WIFI_MAC_CTL_ACK);
1833
1834 events.emplace_back(
1835 WIFI_MAC_CTL_END,
1836 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1837 if (testIndex == NON_HT_PPDU_DONT_USE_MAC_HDR)
1838 {
1839 Simulator::Schedule(MilliSeconds(2), [=, this]() {
1840 // check that trace infos have been received
1841 NS_TEST_EXPECT_MSG_EQ(m_dlPktDone,
1842 true,
1843 "Did not receive the expected trace infos");
1844 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
1845
1846 if (++m_testIndex < static_cast<uint8_t>(COUNT))
1847 {
1848 RunOne();
1849 }
1850 });
1851 }
1852 });
1853
1854 // In the NON_HT_PPDU_DONT_USE_MAC_HDR scenario, the main PHY does not switch back to the
1855 // preferred link after the transmission of the broadcast frame, so the QoS data frame with
1856 // TID 0 is transmitted (on link 1) before the QoS data frame with TID 4 (on link 0)
1857 const auto pos =
1858 (testIndex == NON_HT_PPDU_DONT_USE_MAC_HDR ? m_events.cend() : m_events.cbegin());
1859 m_events.splice(pos, events);
1860}
1861
1862void
1863EmlsrSwitchMainPhyBackTest::RunOne()
1864{
1865 const auto testIndex = static_cast<TestScenario>(m_testIndex);
1866
1867 const auto bcastTxVector =
1868 m_apMac->GetWifiRemoteStationManager(m_linkIdForTid0)
1869 ->GetGroupcastTxVector(m_bcastFrame->GetHeader(),
1870 m_apMac->GetWifiPhy(m_linkIdForTid0)->GetChannelWidth());
1871 const auto bcastTxDuration =
1872 WifiPhy::CalculateTxDuration(m_bcastFrame->GetSize(),
1873 bcastTxVector,
1874 m_apMac->GetWifiPhy(m_linkIdForTid0)->GetPhyBand());
1875
1876 const auto mode = (testIndex >= NON_HT_PPDU_DONT_USE_MAC_HDR ? OfdmPhy::GetOfdmRate6Mbps()
1877 : HtPhy::GetHtMcs0());
1878
1879 m_switchMainPhyBackDelay = bcastTxDuration;
1880 if (testIndex != LONG_SWITCH_BACK_DELAY_DONT_USE_MAC_HDR &&
1881 testIndex != LONG_SWITCH_BACK_DELAY_USE_MAC_HDR)
1882 {
1883 // make switch main PHY back delay at least two channel switch delays shorter than the
1884 // PPDU TX duration
1885 m_switchMainPhyBackDelay -= MicroSeconds(250);
1886 }
1887
1888 const auto interruptSwitch =
1889 (testIndex == RXSTART_WHILE_SWITCH_INTERRUPT || testIndex == NON_HT_PPDU_DONT_USE_MAC_HDR ||
1890 testIndex == LONG_SWITCH_BACK_DELAY_USE_MAC_HDR);
1891 const auto useMacHeader =
1892 (testIndex == NON_HT_PPDU_USE_MAC_HDR || testIndex == LONG_SWITCH_BACK_DELAY_USE_MAC_HDR);
1893
1894 m_apMac->GetWifiRemoteStationManager(m_linkIdForTid0)
1895 ->SetAttribute("NonUnicastMode", WifiModeValue(mode));
1896 m_staMacs[0]->GetEmlsrManager()->SetAttribute("SwitchMainPhyBackDelay",
1897 TimeValue(m_switchMainPhyBackDelay));
1898 m_staMacs[0]->GetEmlsrManager()->SetAttribute("InterruptSwitch", BooleanValue(interruptSwitch));
1899 m_staMacs[0]->GetEmlsrManager()->SetAttribute("UseNotifiedMacHdr", BooleanValue(useMacHeader));
1900 m_staMacs[0]->GetEmlsrManager()->SetAttribute("CheckAccessOnMainPhyLink", BooleanValue(false));
1901 // no in-device interference, just to avoid starting MSD timer causing RTS-CTS exchanges
1902 m_staMacs[0]->GetEmlsrManager()->SetAttribute("InDeviceInterference", BooleanValue(false));
1903
1904 NS_LOG_INFO("Starting test #" << +m_testIndex << "\n");
1905 m_dlPktDone = false;
1906
1907 // wait some more time to ensure that backoffs count down to zero and then generate a packet
1908 // at the EMLSR client. When notified of the main PHY switch, we decide when the AP MLD has to
1909 // transmit a broadcast frame
1910 Simulator::Schedule(MilliSeconds(5), [=, this]() {
1911 m_staMacs[0]->GetDevice()->GetNode()->AddApplication(GetApplication(UPLINK, 0, 1, 500));
1912 });
1913
1914 auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
1915 auto advEmlsrMgr = DynamicCast<AdvancedEmlsrManager>(m_staMacs[0]->GetEmlsrManager());
1916
1917 m_events.emplace_back(
1918 WIFI_MAC_QOSDATA,
1919 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
1920 const auto phyHdrDuration = WifiPhy::CalculatePhyPreambleAndHeaderDuration(txVector);
1921 const auto txDuration =
1922 WifiPhy::CalculateTxDuration(psdu,
1923 txVector,
1924 m_apMac->GetWifiPhy(linkId)->GetPhyBand());
1925 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr1(),
1926 Mac48Address::GetBroadcast(),
1927 "Expected a broadcast frame");
1928 NS_TEST_EXPECT_MSG_EQ(+linkId,
1929 +m_linkIdForTid0,
1930 "Broadcast frame transmitted on wrong link");
1931 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr2(),
1932 m_apMac->GetFrameExchangeManager(linkId)->GetAddress(),
1933 "Unexpected TA for the broadcast frame");
1934 NS_TEST_EXPECT_MSG_EQ(txVector.GetMode(), mode, "Unexpected WifiMode");
1935
1936 switch (testIndex)
1937 {
1938 case RXSTART_WHILE_SWITCH_NO_INTERRUPT:
1939 // main PHY is switching before the end of PHY header reception and
1940 // the switch main PHY back timer is running
1941 Simulator::Schedule(phyHdrDuration - TimeStep(1), [=, this]() {
1942 NS_TEST_EXPECT_MSG_EQ(
1943 mainPhy->GetState()->GetLastTime({WifiPhyState::SWITCHING}),
1944 Simulator::Now(),
1945 "Main PHY is not switching at the end of PHY header reception");
1946 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
1947 +m_linkIdForTid0,
1948 "Main PHY is switching to a wrong link");
1949 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
1950 true,
1951 "Main PHY switch back timer should be running");
1952 });
1953 // main PHY is still switching right after the end of PHY header reception, but
1954 // the switch main PHY back timer has been stopped
1955 Simulator::Schedule(phyHdrDuration + TimeStep(2), [=, this]() {
1956 NS_TEST_EXPECT_MSG_EQ(
1957 mainPhy->GetState()->GetLastTime({WifiPhyState::SWITCHING}),
1958 Simulator::Now(),
1959 "Main PHY is not switching at the end of PHY header reception");
1960 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
1961 +m_linkIdForTid0,
1962 "Main PHY is switching to a wrong link");
1963 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
1964 false,
1965 "Main PHY switch back timer should have been stopped");
1966 });
1967 // main PHY is expected to switch back when the ongoing switch terminates
1968 m_expectedMainPhySwitchBackTime = Simulator::Now() + mainPhy->GetDelayUntilIdle();
1969 break;
1970
1971 case RXSTART_WHILE_SWITCH_INTERRUPT:
1972 // main PHY is switching before the end of PHY header reception and
1973 // the switch main PHY back timer is running
1974 Simulator::Schedule(phyHdrDuration - TimeStep(1), [=, this]() {
1975 NS_TEST_EXPECT_MSG_EQ(
1976 mainPhy->GetState()->GetLastTime({WifiPhyState::SWITCHING}),
1977 Simulator::Now(),
1978 "Main PHY is not switching at the end of PHY header reception");
1979 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
1980 +m_linkIdForTid0,
1981 "Main PHY is switching to a wrong link");
1982 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
1983 true,
1984 "Main PHY switch back timer should be running");
1985 });
1986 // main PHY is switching back right after the end of PHY header reception, but
1987 // the switch main PHY back timer has been stopped
1988 Simulator::Schedule(phyHdrDuration + TimeStep(2), [=, this]() {
1989 NS_TEST_EXPECT_MSG_EQ(
1990 mainPhy->GetState()->GetLastTime({WifiPhyState::SWITCHING}),
1991 Simulator::Now(),
1992 "Main PHY is not switching at the end of PHY header reception");
1993 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
1994 +m_mainPhyId,
1995 "Main PHY is switching to a wrong link");
1996 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
1997 false,
1998 "Main PHY switch back timer should have been stopped");
1999 });
2000 // main PHY is expected to switch back when the reception of PHY header ends
2001 m_expectedMainPhySwitchBackTime = Simulator::Now() + phyHdrDuration + TimeStep(1);
2002 break;
2003
2004 case RXSTART_AFTER_SWITCH_HT_PPDU:
2005 // main PHY is switching back at the end of PHY header reception and
2006 // the switch main PHY back timer has been stopped
2007 Simulator::Schedule(phyHdrDuration, [=, this]() {
2008 NS_TEST_EXPECT_MSG_EQ(
2009 mainPhy->GetState()->GetLastTime({WifiPhyState::SWITCHING}),
2010 Simulator::Now(),
2011 "Main PHY is not switching at the end of PHY header reception");
2012 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
2013 +m_mainPhyId,
2014 "Main PHY is switching to a wrong link");
2015 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2016 false,
2017 "Main PHY switch back timer should have been stopped");
2018 });
2019 // main PHY is expected to switch back when the reception of PHY header ends
2020 m_expectedMainPhySwitchBackTime =
2021 Simulator::Now() + mainPhy->GetDelayUntilIdle() + TimeStep(1);
2022 break;
2023
2024 case NON_HT_PPDU_DONT_USE_MAC_HDR:
2025 // when the main PHY completes the channel switch, it is not connected to the aux
2026 // PHY link and the switch main PHY back timer is running
2027 Simulator::Schedule(mainPhy->GetDelayUntilIdle() + TimeStep(1), [=, this]() {
2028 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_mainPhySwitchInfo.disconnected,
2029 true,
2030 "Main PHY should be waiting to be connected to a link");
2031 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
2032 +m_linkIdForTid0,
2033 "Main PHY is waiting to be connected to a wrong link");
2034 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2035 true,
2036 "Main PHY switch back timer should be running");
2037 // when PIFS check is performed at the end of the main PHY switch, the medium
2038 // is found busy and a backoff value is generated; make sure that this value is
2039 // at most 2 to ensure the conditions expected by this scenario
2040 if (auto beTxop = m_staMacs[0]->GetQosTxop(AC_BE);
2041 beTxop->GetBackoffSlots(m_linkIdForTid0) > 2)
2042 {
2043 beTxop->StartBackoffNow(2, m_linkIdForTid0);
2044 m_staMacs[0]
2045 ->GetChannelAccessManager(m_linkIdForTid0)
2046 ->NotifyAckTimeoutResetNow(); // force restart access timeout
2047 }
2048 });
2049 // once the PPDU is received, the main PHY is connected to the aux PHY and the
2050 // switch main PHY back timer is still running
2051 Simulator::Schedule(txDuration + TimeStep(1), [=, this]() {
2052 NS_TEST_EXPECT_MSG_EQ(
2053 mainPhy->GetState()->IsStateSwitching(),
2054 false,
2055 "Main PHY should not be switching at the end of PPDU reception");
2056 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_mainPhySwitchInfo.disconnected,
2057 false,
2058 "Main PHY should have been connected to a link");
2059 NS_TEST_ASSERT_MSG_EQ(m_staMacs[0]->GetLinkForPhy(m_mainPhyId).has_value(),
2060 true,
2061 "Main PHY should have been connected to a link");
2062 NS_TEST_EXPECT_MSG_EQ(+m_staMacs[0]->GetLinkForPhy(m_mainPhyId).value(),
2063 +m_linkIdForTid0,
2064 "Main PHY is connected to a wrong link");
2065 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2066 true,
2067 "Main PHY switch back timer should be running");
2068 });
2069 break;
2070
2071 case NON_HT_PPDU_USE_MAC_HDR:
2072 case LONG_SWITCH_BACK_DELAY_USE_MAC_HDR:
2073 // when the main PHY completes the channel switch, it is not connected to the aux
2074 // PHY link and the switch main PHY back timer is running. The aux PHY is in RX
2075 // state and has MAC header info available
2076 Simulator::Schedule(mainPhy->GetDelayUntilIdle() + TimeStep(1), [=, this]() {
2077 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_mainPhySwitchInfo.disconnected,
2078 true,
2079 "Main PHY should be waiting to be connected to a link");
2080 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
2081 +m_linkIdForTid0,
2082 "Main PHY is waiting to be connected to a wrong link");
2083 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2084 true,
2085 "Main PHY switch back timer should be running");
2086 const auto auxPhy = m_staMacs[0]->GetDevice()->GetPhy(m_linkIdForTid0);
2087 NS_TEST_EXPECT_MSG_EQ(auxPhy->IsStateRx(),
2088 true,
2089 "Aux PHY should be in RX state");
2090 auto remTime = auxPhy->GetTimeToMacHdrEnd(SU_STA_ID);
2091 NS_TEST_ASSERT_MSG_EQ(remTime.has_value(),
2092 true,
2093 "No MAC header info available");
2094 if (testIndex == LONG_SWITCH_BACK_DELAY_USE_MAC_HDR)
2095 {
2096 // when PIFS check is performed at the end of the main PHY switch, the
2097 // medium is found busy and a backoff value is generated; make sure that
2098 // this value is at least 7 to ensure that the backoff timer is still
2099 // running when the switch main PHY back timer is expected to expire
2100 if (auto beTxop = m_staMacs[0]->GetQosTxop(AC_BE);
2101 beTxop->GetBackoffSlots(m_linkIdForTid0) <= 6)
2102 {
2103 beTxop->StartBackoffNow(7, m_linkIdForTid0);
2104 }
2105 }
2106 // main PHY is expected to switch back when the MAC header is received
2107 m_expectedMainPhySwitchBackTime = Simulator::Now() + remTime.value();
2108 // once the MAC header is received, the main PHY switches back and the
2109 // switch main PHY back timer is stopped
2110 Simulator::Schedule(remTime.value() + TimeStep(1), [=, this]() {
2111 NS_TEST_EXPECT_MSG_EQ(
2112 mainPhy->GetState()->IsStateSwitching(),
2113 true,
2114 "Main PHY should be switching after receiving the MAC header");
2115 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
2116 +m_mainPhyId,
2117 "Main PHY should be switching to the preferred link");
2118 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2119 false,
2120 "Main PHY switch back timer should not be running");
2121 });
2122 });
2123 break;
2124
2125 case LONG_SWITCH_BACK_DELAY_DONT_USE_MAC_HDR:
2126 // when the main PHY completes the channel switch, it is not connected to the aux
2127 // PHY link and the switch main PHY back timer is running
2128 Simulator::Schedule(mainPhy->GetDelayUntilIdle() + TimeStep(1), [=, this]() {
2129 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_mainPhySwitchInfo.disconnected,
2130 true,
2131 "Main PHY should be waiting to be connected to a link");
2132 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
2133 +m_linkIdForTid0,
2134 "Main PHY is waiting to be connected to a wrong link");
2135 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2136 true,
2137 "Main PHY switch back timer should be running");
2138 // when PIFS check is performed at the end of the main PHY switch, the medium
2139 // is found busy and a backoff value is generated; make sure that this value is
2140 // at least 7 to ensure that the backoff timer is still running when the switch
2141 // main PHY back timer is expected to expire
2142 if (auto beTxop = m_staMacs[0]->GetQosTxop(AC_BE);
2143 beTxop->GetBackoffSlots(m_linkIdForTid0) <= 6)
2144 {
2145 beTxop->StartBackoffNow(7, m_linkIdForTid0);
2146 }
2147 });
2148 // once the PPDU is received, the switch main PHY back timer is stopped and the
2149 // main PHY switches back to the preferred link
2150 Simulator::Schedule(txDuration + TimeStep(2), [=, this]() {
2151 NS_TEST_EXPECT_MSG_EQ(
2152 mainPhy->GetState()->IsStateSwitching(),
2153 true,
2154 "Main PHY should be switching at the end of PPDU reception");
2155 NS_TEST_EXPECT_MSG_EQ(+advEmlsrMgr->m_mainPhySwitchInfo.to,
2156 +m_mainPhyId,
2157 "Main PHY should be switching back to preferred link");
2158 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2159 false,
2160 "Main PHY switch back timer should be not running");
2161 });
2162 // main PHY is expected to switch back when the reception of PPDU ends
2163 m_expectedMainPhySwitchBackTime = Simulator::Now() + txDuration + TimeStep(1);
2164 break;
2165
2166 default:
2167 NS_TEST_ASSERT_MSG_EQ(true, false, "Unexpected scenario: " << +m_testIndex);
2168 }
2169 });
2170
2171 m_events.emplace_back(
2172 WIFI_MAC_QOSDATA,
2173 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
2174 NS_TEST_EXPECT_MSG_EQ(+linkId,
2175 +m_linkIdForTid0,
2176 "Unicast frame transmitted on wrong link");
2177 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr1(),
2178 m_apMac->GetFrameExchangeManager(linkId)->GetAddress(),
2179 "Unexpected RA for the unicast frame");
2180 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr2(),
2181 m_staMacs[0]->GetFrameExchangeManager(linkId)->GetAddress(),
2182 "Unexpected TA for the unicast frame");
2183
2184 if (testIndex == NON_HT_PPDU_DONT_USE_MAC_HDR)
2185 {
2186 Simulator::Schedule(TimeStep(1), [=, this]() {
2187 // UL TXOP started, main PHY switch back time was cancelled
2188 NS_TEST_EXPECT_MSG_EQ(advEmlsrMgr->m_switchMainPhyBackEvent.IsPending(),
2189 false,
2190 "Main PHY switch back timer should not be running");
2191 });
2192 }
2193 });
2194
2195 m_events.emplace_back(
2196 WIFI_MAC_CTL_ACK,
2197 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
2198 const auto txDuration =
2199 WifiPhy::CalculateTxDuration(psdu,
2200 txVector,
2201 m_apMac->GetWifiPhy(linkId)->GetPhyBand());
2202
2203 if (testIndex == NON_HT_PPDU_DONT_USE_MAC_HDR)
2204 {
2205 // main PHY is expected to switch back when the UL TXOP ends
2206 m_expectedMainPhySwitchBackTime = Simulator::Now() + txDuration;
2207 }
2208 else
2209 {
2210 Simulator::Schedule(MilliSeconds(2), [=, this]() {
2211 // check that trace infos have been received
2212 NS_TEST_EXPECT_MSG_EQ(m_dlPktDone,
2213 true,
2214 "Did not receive the expected trace infos");
2215 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
2216
2217 if (++m_testIndex < static_cast<uint8_t>(COUNT))
2218 {
2219 RunOne();
2220 }
2221 });
2222 }
2223 });
2224}
2225
2226EmlsrCheckNavAndCcaLastPifsTest::EmlsrCheckNavAndCcaLastPifsTest()
2227 : EmlsrOperationsTestBase("Verify operations during the NAV and CCA check in the last PIFS")
2228{
2229 m_mainPhyId = 1;
2230 m_linksToEnableEmlsrOn = {0, 1, 2};
2231 m_nEmlsrStations = 1;
2232 m_nNonEmlsrStations = 0;
2233
2234 m_paddingDelay = {MicroSeconds(64)};
2235 m_transitionDelay = {MicroSeconds(64)};
2236 m_establishBaDl = {};
2237 m_establishBaUl = {0};
2238 m_duration = Seconds(0.5);
2239}
2240
2241void
2242EmlsrCheckNavAndCcaLastPifsTest::DoSetup()
2243{
2244 Config::SetDefault("ns3::EmlsrManager::AuxPhyTxCapable", BooleanValue(false));
2245 Config::SetDefault("ns3::DefaultEmlsrManager::SwitchAuxPhy", BooleanValue(false));
2246 Config::SetDefault("ns3::ChannelAccessManager::NSlotsLeft", UintegerValue(m_nSlotsLeft));
2247 // Use only one link for DL and UL traffic
2248 std::string mapping = "0 " + std::to_string(m_linkIdForTid0);
2249 Config::SetDefault("ns3::EhtConfiguration::TidToLinkMappingDl", StringValue(mapping));
2250 Config::SetDefault("ns3::EhtConfiguration::TidToLinkMappingUl", StringValue(mapping));
2251 Config::SetDefault("ns3::AdvancedEmlsrManager::UseAuxPhyCca", BooleanValue(true));
2252 Config::SetDefault("ns3::EmlsrManager::AuxPhyChannelWidth", UintegerValue(20));
2253
2254 // use 40 MHz channels
2255 m_channelsStr = {"{3, 40, BAND_2_4GHZ, 0}"s,
2256 "{38, 40, BAND_5GHZ, 0}"s,
2257 "{3, 40, BAND_6GHZ, 0}"s};
2258
2259 EmlsrOperationsTestBase::DoSetup();
2260}
2261
2262void
2263EmlsrCheckNavAndCcaLastPifsTest::Transmit(Ptr<WifiMac> mac,
2264 uint8_t phyId,
2265 WifiConstPsduMap psduMap,
2266 WifiTxVector txVector,
2267 double txPowerW)
2268{
2269 EmlsrOperationsTestBase::Transmit(mac, phyId, psduMap, txVector, txPowerW);
2270
2271 const auto psdu = psduMap.cbegin()->second;
2272 const auto& hdr = psdu->GetHeader(0);
2273
2274 // nothing to do before setup is completed
2275 if (!m_setupDone)
2276 {
2277 return;
2278 }
2279
2280 auto linkId = mac->GetLinkForPhy(phyId);
2281 NS_TEST_ASSERT_MSG_EQ(linkId.has_value(),
2282 true,
2283 "PHY " << +phyId << " is not operating on any link");
2284
2285 if (!m_events.empty())
2286 {
2287 // check that the expected frame is being transmitted
2288 NS_TEST_EXPECT_MSG_EQ(m_events.front().hdrType,
2289 hdr.GetType(),
2290 "Unexpected MAC header type for frame #" << ++m_processedEvents);
2291 // perform actions/checks, if any
2292 if (m_events.front().func)
2293 {
2294 m_events.front().func(psdu, txVector, linkId.value());
2295 }
2296
2297 m_events.pop_front();
2298 }
2299}
2300
2301void
2302EmlsrCheckNavAndCcaLastPifsTest::StartTraffic()
2303{
2304 Simulator::Schedule(MilliSeconds(5), [=, this]() {
2305 m_setupDone = true;
2306 RunOne();
2307 });
2308}
2309
2310void
2311EmlsrCheckNavAndCcaLastPifsTest::DoRun()
2312{
2313 Simulator::Stop(m_duration);
2314 Simulator::Run();
2315
2316 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
2317
2318 Simulator::Destroy();
2319}
2320
2321void
2322EmlsrCheckNavAndCcaLastPifsTest::RunOne()
2323{
2324 const auto useAuxPhyCca = ((m_testIndex & 0x1) == 1);
2325 const auto scenario = static_cast<TestScenario>(m_testIndex >> 1);
2326
2327 // aux PHY operating on the link on which TID 0 is mapped
2328 const auto auxPhy = m_staMacs[0]->GetDevice()->GetPhy(m_linkIdForTid0);
2329 const auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);
2330 const auto slot = auxPhy->GetSlot();
2331 const auto pifs = auxPhy->GetSifs() + slot;
2332 const auto timeToBackoffEnd = slot * m_nSlotsLeft;
2333 NS_TEST_ASSERT_MSG_GT(timeToBackoffEnd, pifs + slot, "m_nSlotsLeft too small for this test");
2334
2335 const auto switchDelay =
2336 (scenario == BACKOFF_END_BEFORE_SWITCH_END
2337 ? timeToBackoffEnd + slot
2338 : (scenario == LESS_THAN_PIFS_UNTIL_BACKOFF_END ? timeToBackoffEnd - pifs + slot
2339 : timeToBackoffEnd - pifs - slot));
2340
2341 m_staMacs[0]->GetEmlsrManager()->SetAttribute("UseAuxPhyCca", BooleanValue(useAuxPhyCca));
2342 mainPhy->SetAttribute("ChannelSwitchDelay", TimeValue(switchDelay));
2343
2344 NS_LOG_INFO("Starting test #" << m_testIndex << "\n");
2345
2346 // the AP sends a broadcast frame on the link on which TID 0 is mapped
2347 WifiMacHeader hdr(WIFI_MAC_QOSDATA);
2348 hdr.SetAddr1(Mac48Address::GetBroadcast());
2349 hdr.SetAddr2(m_apMac->GetFrameExchangeManager(m_linkIdForTid0)->GetAddress());
2350 hdr.SetAddr3(m_apMac->GetAddress());
2351 hdr.SetDsFrom();
2352 hdr.SetDsNotTo();
2353 hdr.SetQosTid(0);
2354
2355 m_apMac->GetQosTxop(AC_BE)->Queue(Create<WifiMpdu>(Create<Packet>(1000), hdr));
2356
2357 m_events.emplace_back(
2358 WIFI_MAC_QOSDATA,
2359 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
2360 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr1(),
2361 Mac48Address::GetBroadcast(),
2362 "Expected a broadcast frame");
2363 NS_TEST_EXPECT_MSG_EQ(+linkId,
2364 +m_linkIdForTid0,
2365 "Broadcast frame transmitted on wrong link");
2366 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr2(),
2367 m_apMac->GetFrameExchangeManager(linkId)->GetAddress(),
2368 "Unexpected TA for the broadcast frame");
2369 const auto txDuration =
2370 WifiPhy::CalculateTxDuration(psdu,
2371 txVector,
2372 m_apMac->GetWifiPhy(linkId)->GetPhyBand());
2373 const auto emlsrBeEdca = m_staMacs[0]->GetQosTxop(AC_BE);
2374
2375 // generate a packet at the EMLSR client while the medium on the link on which TID 0
2376 // is mapped is still busy, so that a backoff value is generated. The backoff counter
2377 // is configured to be equal to the m_nSlotsLeft value
2378 Simulator::Schedule(txDuration - TimeStep(1), [=, this]() {
2379 emlsrBeEdca->StartBackoffNow(m_nSlotsLeft, m_linkIdForTid0);
2380 m_staMacs[0]->GetDevice()->GetNode()->AddApplication(
2381 GetApplication(UPLINK, 0, 1, 500));
2382 });
2383
2384 // given that the backoff counter equals m_nSlotsLeft, we expect that, an AIFS after the
2385 // end of the broadcast frame transmission, the NSlotsLeftAlert trace is fired and the
2386 // main PHY starts switching to the link on which TID 0 is mapped
2387 const auto aifs = auxPhy->GetSifs() + emlsrBeEdca->GetAifsn(m_linkIdForTid0) * slot;
2388 Simulator::Schedule(txDuration + aifs + TimeStep(1), [=, this]() {
2389 NS_TEST_EXPECT_MSG_EQ(mainPhy->IsStateSwitching(),
2390 true,
2391 "Expected the main PHY to be switching");
2392 NS_TEST_EXPECT_MSG_EQ(mainPhy->GetDelayUntilIdle(),
2393 switchDelay - TimeStep(1),
2394 "Unexpected end of main PHY channel switch");
2395
2396 const auto now = Simulator::Now();
2397 switch (scenario)
2398 {
2399 case BACKOFF_END_BEFORE_SWITCH_END:
2400 if (!useAuxPhyCca)
2401 {
2402 m_expectedTxStart = now + mainPhy->GetDelayUntilIdle() + pifs;
2403 m_expectedWidth = m_mainPhyWidth;
2404 }
2405 else
2406 {
2407 m_expectedTxStart = now + mainPhy->GetDelayUntilIdle();
2408 m_expectedWidth = m_auxPhyWidth;
2409 }
2410 break;
2411 case LESS_THAN_PIFS_UNTIL_BACKOFF_END:
2412 if (!useAuxPhyCca)
2413 {
2414 m_expectedTxStart = now + mainPhy->GetDelayUntilIdle() + pifs;
2415 m_expectedWidth = m_mainPhyWidth;
2416 }
2417 else
2418 {
2419 m_expectedTxStart = m_staMacs[0]
2420 ->GetChannelAccessManager(m_linkIdForTid0)
2421 ->GetBackoffEndFor(emlsrBeEdca);
2422 m_expectedWidth = m_auxPhyWidth;
2423 }
2424 break;
2425 case MORE_THAN_PIFS_UNTIL_BACKOFF_END:
2426 m_expectedTxStart = m_staMacs[0]
2427 ->GetChannelAccessManager(m_linkIdForTid0)
2428 ->GetBackoffEndFor(emlsrBeEdca);
2429 m_expectedWidth = m_mainPhyWidth;
2430 break;
2431 default:
2432 NS_ABORT_MSG("Unexpected scenario " << +static_cast<uint8_t>(scenario));
2433 }
2434 });
2435 });
2436
2437 m_events.emplace_back(
2438 WIFI_MAC_QOSDATA,
2439 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
2440 NS_TEST_EXPECT_MSG_EQ(+linkId,
2441 +m_linkIdForTid0,
2442 "Unicast frame transmitted on wrong link");
2443 NS_TEST_EXPECT_MSG_EQ(psdu->GetAddr2(),
2444 m_staMacs[0]->GetFrameExchangeManager(linkId)->GetAddress(),
2445 "Unexpected TA for the unicast frame");
2446 NS_TEST_EXPECT_MSG_EQ(m_expectedTxStart,
2447 Simulator::Now(),
2448 "Unexpected start TX time for unicast frame");
2449 NS_TEST_EXPECT_MSG_EQ(m_expectedWidth,
2450 txVector.GetChannelWidth(),
2451 "Unexpected channel width for the unicast frame");
2452 });
2453
2454 m_events.emplace_back(
2455 WIFI_MAC_CTL_ACK,
2456 [=, this](Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector, uint8_t linkId) {
2457 Simulator::Schedule(MilliSeconds(2), [=, this]() {
2458 NS_TEST_EXPECT_MSG_EQ(m_events.empty(), true, "Not all events took place");
2459
2460 if (++m_testIndex < static_cast<uint8_t>(COUNT) * 2)
2461 {
2462 RunOne();
2463 }
2464 });
2465 });
2466}
2467
2468WifiEmlsrLinkSwitchTestSuite::WifiEmlsrLinkSwitchTestSuite()
2469 : TestSuite("wifi-emlsr-link-switch", Type::UNIT)
2470{
2471 for (bool switchAuxPhy : {true, false})
2472 {
2473 for (bool resetCamStateAndInterruptSwitch : {true, false})
2474 {
2475 for (auto auxPhyMaxChWidth : {MHz_u{20}, MHz_u{40}, MHz_u{80}, MHz_u{160}})
2476 {
2477 AddTestCase(new EmlsrLinkSwitchTest(
2478 {switchAuxPhy, resetCamStateAndInterruptSwitch, auxPhyMaxChWidth}),
2479 TestCase::Duration::QUICK);
2480 }
2481 }
2482 }
2483
2484 AddTestCase(new EmlsrCheckNavAndCcaLastPifsTest(), TestCase::Duration::QUICK);
2485 AddTestCase(new EmlsrIcfSentDuringMainPhySwitchTest(), TestCase::Duration::QUICK);
2486 AddTestCase(new EmlsrSwitchMainPhyBackTest(), TestCase::Duration::QUICK);
2487
2488 AddTestCase(new EmlsrCcaBusyTest(MHz_u{20}), TestCase::Duration::QUICK);
2489 AddTestCase(new EmlsrCcaBusyTest(MHz_u{80}), TestCase::Duration::QUICK);
2490
2491 for (const auto switchAuxPhy : {true, false})
2492 {
2493 for (const auto auxPhyTxCapable : {true, false})
2494 {
2495 AddTestCase(new SingleLinkEmlsrTest(switchAuxPhy, auxPhyTxCapable),
2496 TestCase::Duration::QUICK);
2497 }
2498 }
2499}
2500
2501static WifiEmlsrLinkSwitchTestSuite g_wifiEmlsrLinkSwitchTestSuite; ///< the test suite
EmlsrCcaBusyTest
Test CCA busy notifications on EMLSR clients.
Definition wifi-emlsr-link-switch-test.h:157
EmlsrCcaBusyTest::DoSetup
void DoSetup() override
Implementation to do any local setup required for this TestCase.
Definition wifi-emlsr-link-switch-test.cc:681
EmlsrCcaBusyTest::m_nextMainPhyLinkId
uint8_t m_nextMainPhyLinkId
the ID of the link the main PHY switches to
Definition wifi-emlsr-link-switch-test.h:200
EmlsrCcaBusyTest::m_currMainPhyLinkId
uint8_t m_currMainPhyLinkId
the ID of the link the main PHY switches from
Definition wifi-emlsr-link-switch-test.h:199
EmlsrCcaBusyTest::StartTraffic
void StartTraffic() override
Start the generation of traffic (needs to be overridden)
Definition wifi-emlsr-link-switch-test.cc:732
EmlsrCcaBusyTest::m_auxPhyMaxChWidth
MHz_u m_auxPhyMaxChWidth
max channel width supported by aux PHYs
Definition wifi-emlsr-link-switch-test.h:197
EmlsrCcaBusyTest::TransmitPacketToAp
void TransmitPacketToAp(uint8_t linkId)
Make the other MLD transmit a packet to the AP on the given link.
Definition wifi-emlsr-link-switch-test.cc:703
EmlsrCcaBusyTest::DoRun
void DoRun() override
Implementation to actually run this TestCase.
Definition wifi-emlsr-link-switch-test.cc:672
EmlsrCcaBusyTest::m_channelSwitchDelay
Time m_channelSwitchDelay
the PHY channel switch delay
Definition wifi-emlsr-link-switch-test.h:198
EmlsrCcaBusyTest::CheckPoint1
void CheckPoint1()
Perform checks after that the preamble of the first PPDU has been received.
Definition wifi-emlsr-link-switch-test.cc:779
EmlsrCcaBusyTest::CheckPoint3
void CheckPoint3()
Perform checks after that the aux PHY completed the link switch.
Definition wifi-emlsr-link-switch-test.cc:850
EmlsrCcaBusyTest::EmlsrCcaBusyTest
EmlsrCcaBusyTest(MHz_u auxPhyMaxChWidth)
Constructor.
Definition wifi-emlsr-link-switch-test.cc:654
EmlsrCcaBusyTest::CheckPoint2
void CheckPoint2()
Perform checks after that the main PHY completed the link switch.
Definition wifi-emlsr-link-switch-test.cc:826
EmlsrCheckNavAndCcaLastPifsTest
Check NAV and CCA in the last PIFS test.
Definition wifi-emlsr-link-switch-test.h:615
EmlsrCheckNavAndCcaLastPifsTest::m_nSlotsLeft
const uint8_t m_nSlotsLeft
value for the CAM NSlotsLeft attribute
Definition wifi-emlsr-link-switch-test.h:672
EmlsrCheckNavAndCcaLastPifsTest::DoRun
void DoRun() override
Implementation to actually run this TestCase.
Definition wifi-emlsr-link-switch-test.cc:2311
EmlsrCheckNavAndCcaLastPifsTest::StartTraffic
void StartTraffic() override
Start the generation of traffic (needs to be overridden)
Definition wifi-emlsr-link-switch-test.cc:2302
EmlsrCheckNavAndCcaLastPifsTest::m_linkIdForTid0
const uint8_t m_linkIdForTid0
ID of the link on which TID 0 is mapped.
Definition wifi-emlsr-link-switch-test.h:671
EmlsrCheckNavAndCcaLastPifsTest::m_testIndex
std::size_t m_testIndex
index to iterate over test scenarios
Definition wifi-emlsr-link-switch-test.h:667
EmlsrCheckNavAndCcaLastPifsTest::Transmit
void Transmit(Ptr< WifiMac > mac, uint8_t phyId, WifiConstPsduMap psduMap, WifiTxVector txVector, double txPowerW) override
Callback invoked when a FEM passes PSDUs to the PHY.
Definition wifi-emlsr-link-switch-test.cc:2263
EmlsrCheckNavAndCcaLastPifsTest::TestScenario
TestScenario
Enumeration indicating the tested scenario.
Definition wifi-emlsr-link-switch-test.h:624
EmlsrCheckNavAndCcaLastPifsTest::m_setupDone
bool m_setupDone
whether association, BA, ... have been done
Definition wifi-emlsr-link-switch-test.h:668
EmlsrCheckNavAndCcaLastPifsTest::RunOne
void RunOne()
Runs a test case and invokes itself for the next test case.
Definition wifi-emlsr-link-switch-test.cc:2322
EmlsrCheckNavAndCcaLastPifsTest::m_expectedTxStart
Time m_expectedTxStart
expected start time for frame transmission
Definition wifi-emlsr-link-switch-test.h:675
EmlsrCheckNavAndCcaLastPifsTest::m_events
std::list< Events > m_events
list of events for a test run
Definition wifi-emlsr-link-switch-test.h:669
EmlsrCheckNavAndCcaLastPifsTest::m_expectedWidth
MHz_u m_expectedWidth
expected channel width for frame transmission
Definition wifi-emlsr-link-switch-test.h:676
EmlsrCheckNavAndCcaLastPifsTest::m_processedEvents
std::size_t m_processedEvents
number of processed events
Definition wifi-emlsr-link-switch-test.h:670
EmlsrCheckNavAndCcaLastPifsTest::m_auxPhyWidth
const MHz_u m_auxPhyWidth
aux PHY channel width
Definition wifi-emlsr-link-switch-test.h:674
EmlsrCheckNavAndCcaLastPifsTest::DoSetup
void DoSetup() override
Implementation to do any local setup required for this TestCase.
Definition wifi-emlsr-link-switch-test.cc:2242
EmlsrCheckNavAndCcaLastPifsTest::m_mainPhyWidth
const MHz_u m_mainPhyWidth
main PHY channel width
Definition wifi-emlsr-link-switch-test.h:673
EmlsrIcfSentDuringMainPhySwitchTest
Check ICF reception while main PHY is switching.
Definition wifi-emlsr-link-switch-test.h:323
EmlsrIcfSentDuringMainPhySwitchTest::m_csdIndex
ChannelSwitchEnd m_csdIndex
index to iterate over channel switch durations
Definition wifi-emlsr-link-switch-test.h:413
EmlsrIcfSentDuringMainPhySwitchTest::CheckInDeviceInterference
void CheckInDeviceInterference(const std::string &testStr, uint8_t linkId, Time duration)
Check that the in-device interference generated by a transmission of the given duration on the given ...
Definition wifi-emlsr-link-switch-test.cc:1131
EmlsrIcfSentDuringMainPhySwitchTest::m_linkIdForTid3
const uint8_t m_linkIdForTid3
ID of the link on which TID 3 is mapped.
Definition wifi-emlsr-link-switch-test.h:423
EmlsrIcfSentDuringMainPhySwitchTest::RunOne
void RunOne()
Runs a test case and invokes itself for the next test case.
Definition wifi-emlsr-link-switch-test.cc:1253
EmlsrIcfSentDuringMainPhySwitchTest::StartTraffic
void StartTraffic() override
Start the generation of traffic (needs to be overridden)
Definition wifi-emlsr-link-switch-test.cc:1204
EmlsrIcfSentDuringMainPhySwitchTest::m_setupDone
bool m_setupDone
whether association, BA, ... have been done
Definition wifi-emlsr-link-switch-test.h:417
EmlsrIcfSentDuringMainPhySwitchTest::m_bands
std::array< WifiSpectrumBandInfo, 3 > m_bands
bands of the 3 frequency channels
Definition wifi-emlsr-link-switch-test.h:420
EmlsrIcfSentDuringMainPhySwitchTest::DoRun
void DoRun() override
Implementation to actually run this TestCase.
Definition wifi-emlsr-link-switch-test.cc:1211
EmlsrIcfSentDuringMainPhySwitchTest::Transmit
void Transmit(Ptr< WifiMac > mac, uint8_t phyId, WifiConstPsduMap psduMap, WifiTxVector txVector, double txPowerW) override
Callback invoked when a FEM passes PSDUs to the PHY.
Definition wifi-emlsr-link-switch-test.cc:1165
EmlsrIcfSentDuringMainPhySwitchTest::m_testIndex
uint8_t m_testIndex
index to iterate over test scenarios
Definition wifi-emlsr-link-switch-test.h:415
EmlsrIcfSentDuringMainPhySwitchTest::GenerateNoiseOnAllLinks
void GenerateNoiseOnAllLinks(Ptr< WifiMac > mac, Time duration)
Generate noise on all the links of the given MAC for the given time duration.
Definition wifi-emlsr-link-switch-test.cc:1109
EmlsrIcfSentDuringMainPhySwitchTest::EmlsrLinkSwitchCb
void EmlsrLinkSwitchCb(uint8_t linkId, Ptr< WifiPhy > phy, bool connected)
Callback connected to the EmlsrLinkSwitch trace source of the StaWifiMac of the EMLSR client.
Definition wifi-emlsr-link-switch-test.cc:1222
EmlsrIcfSentDuringMainPhySwitchTest::m_processedEvents
std::size_t m_processedEvents
number of processed events
Definition wifi-emlsr-link-switch-test.h:422
EmlsrIcfSentDuringMainPhySwitchTest::m_switchFrom
std::optional< MainPhySwitchInfo > m_switchFrom
info for main PHY leaving a link
Definition wifi-emlsr-link-switch-test.h:418
EmlsrIcfSentDuringMainPhySwitchTest::m_events
std::list< Events > m_events
list of events for a test run
Definition wifi-emlsr-link-switch-test.h:421
EmlsrIcfSentDuringMainPhySwitchTest::ChannelSwitchEnd
ChannelSwitchEnd
Enumeration indicating the duration of a main PHY channel switch compared to the ICF fields.
Definition wifi-emlsr-link-switch-test.h:332
EmlsrIcfSentDuringMainPhySwitchTest::DoSetup
void DoSetup() override
Implementation to do any local setup required for this TestCase.
Definition wifi-emlsr-link-switch-test.cc:1083
EmlsrIcfSentDuringMainPhySwitchTest::m_switchTo
std::optional< MainPhySwitchInfo > m_switchTo
info for main PHY connected to a link
Definition wifi-emlsr-link-switch-test.h:419
EmlsrIcfSentDuringMainPhySwitchTest::m_testStr
std::string m_testStr
test scenario description
Definition wifi-emlsr-link-switch-test.h:416
EmlsrOperationsTestBase::MainPhySwitchInfoCallback
virtual void MainPhySwitchInfoCallback(std::size_t index, const EmlsrMainPhySwitchTrace &info)
Callback connected to the EMLSR Manager MainPhySwitch trace source.
Definition wifi-emlsr-test-base.cc:217
EmlsrOperationsTestBase::m_nNonEmlsrStations
std::size_t m_nNonEmlsrStations
number of stations to create that do not activate EMLSR
Definition wifi-emlsr-test-base.h:202
EmlsrOperationsTestBase::m_establishBaDl
std::vector< uint8_t > m_establishBaDl
the TIDs for which BA needs to be established with the AP as originator
Definition wifi-emlsr-test-base.h:209
EmlsrOperationsTestBase::CheckBlockedLink
void CheckBlockedLink(Ptr< WifiMac > mac, Mac48Address dest, uint8_t linkId, WifiQueueBlockedReason reason, bool blocked, std::string description, bool testUnblockedForOtherReasons=true)
Check whether QoS data unicast transmissions addressed to the given destination on the given link are...
Definition wifi-emlsr-test-base.cc:621
EmlsrOperationsTestBase::m_nEmlsrStations
std::size_t m_nEmlsrStations
number of stations to create that activate EMLSR
Definition wifi-emlsr-test-base.h:201
EmlsrOperationsTestBase::m_paddingDelay
std::vector< Time > m_paddingDelay
Padding Delay advertised by the non-AP MLD.
Definition wifi-emlsr-test-base.h:205
EmlsrOperationsTestBase::m_linksToEnableEmlsrOn
std::set< uint8_t > m_linksToEnableEmlsrOn
IDs of the links on which EMLSR mode has to be enabled.
Definition wifi-emlsr-test-base.h:198
EmlsrOperationsTestBase::m_apMac
Ptr< ApWifiMac > m_apMac
AP wifi MAC.
Definition wifi-emlsr-test-base.h:215
EmlsrOperationsTestBase::CheckMsdTimerRunning
void CheckMsdTimerRunning(Ptr< StaWifiMac > staMac, uint8_t linkId, bool isRunning, const std::string &msg)
Check whether the MediumSyncDelay timer is running on the given link of the given device.
Definition wifi-emlsr-test-base.cc:147
EmlsrOperationsTestBase::DoSetup
void DoSetup() override
Implementation to do any local setup required for this TestCase.
Definition wifi-emlsr-test-base.cc:261
EmlsrOperationsTestBase::m_mainPhyId
uint8_t m_mainPhyId
ID of the main PHY.
Definition wifi-emlsr-test-base.h:197
EmlsrOperationsTestBase::m_duration
Time m_duration
simulation duration
Definition wifi-emlsr-test-base.h:221
EmlsrOperationsTestBase::GetApplication
Ptr< PacketSocketClient > GetApplication(TrafficDirection dir, std::size_t staId, std::size_t count, std::size_t pktSize, uint8_t priority=0) const
Definition wifi-emlsr-test-base.cc:471
EmlsrOperationsTestBase::m_txPsdus
std::vector< FrameInfo > m_txPsdus
transmitted PSDUs
Definition wifi-emlsr-test-base.h:214
EmlsrOperationsTestBase::Transmit
virtual void Transmit(Ptr< WifiMac > mac, uint8_t phyId, WifiConstPsduMap psduMap, WifiTxVector txVector, double txPowerW)
Callback invoked when a FEM passes PSDUs to the PHY.
Definition wifi-emlsr-test-base.cc:52
EmlsrOperationsTestBase::m_transitionDelay
std::vector< Time > m_transitionDelay
Transition Delay advertised by the non-AP MLD.
Definition wifi-emlsr-test-base.h:207
EmlsrOperationsTestBase::m_channelsStr
std::array< std::string, 3 > m_channelsStr
array of strings defining the channels for the MLD links
Definition wifi-emlsr-test-base.h:185
EmlsrOperationsTestBase::m_staMacs
std::vector< Ptr< StaWifiMac > > m_staMacs
MACs of the non-AP MLDs.
Definition wifi-emlsr-test-base.h:216
EmlsrOperationsTestBase::m_nPhysPerEmlsrDevice
std::size_t m_nPhysPerEmlsrDevice
number of PHYs per EMLSR client
Definition wifi-emlsr-test-base.h:200
EmlsrOperationsTestBase::m_establishBaUl
std::vector< uint8_t > m_establishBaUl
the TIDs for which BA needs to be established with the AP as recipient
Definition wifi-emlsr-test-base.h:211
EmlsrOperationsTestBase::EmlsrOperationsTestBase
EmlsrOperationsTestBase(const std::string &name)
Constructor.
Definition wifi-emlsr-test-base.cc:46
EmlsrSwitchMainPhyBackTest
Switch main PHY back timer test.
Definition wifi-emlsr-link-switch-test.h:498
EmlsrSwitchMainPhyBackTest::DoRun
void DoRun() override
Implementation to actually run this TestCase.
Definition wifi-emlsr-link-switch-test.cc:1636
EmlsrSwitchMainPhyBackTest::m_linkIdForTid4
const uint8_t m_linkIdForTid4
ID of the link on which TID 4 is mapped.
Definition wifi-emlsr-link-switch-test.h:564
EmlsrSwitchMainPhyBackTest::m_bcastFrame
Ptr< WifiMpdu > m_bcastFrame
the broadcast frame sent by the AP MLD
Definition wifi-emlsr-link-switch-test.h:565
EmlsrSwitchMainPhyBackTest::InsertEventsForQosTid4
void InsertEventsForQosTid4()
Insert events corresponding to the UL TXOP to transmit the QoS Data frame with TID 4.
Definition wifi-emlsr-link-switch-test.cc:1798
EmlsrSwitchMainPhyBackTest::m_processedEvents
std::size_t m_processedEvents
number of processed events
Definition wifi-emlsr-link-switch-test.h:562
EmlsrSwitchMainPhyBackTest::MainPhySwitchInfoCallback
void MainPhySwitchInfoCallback(std::size_t index, const EmlsrMainPhySwitchTrace &info) override
Callback connected to the EMLSR Manager MainPhySwitch trace source.
Definition wifi-emlsr-link-switch-test.cc:1647
EmlsrSwitchMainPhyBackTest::m_dlPktDone
bool m_dlPktDone
whether the DL packet has been generated
Definition wifi-emlsr-link-switch-test.h:560
EmlsrSwitchMainPhyBackTest::m_setupDone
bool m_setupDone
whether association, BA, ... have been done
Definition wifi-emlsr-link-switch-test.h:559
EmlsrSwitchMainPhyBackTest::DoSetup
void DoSetup() override
Implementation to do any local setup required for this TestCase.
Definition wifi-emlsr-link-switch-test.cc:1562
EmlsrSwitchMainPhyBackTest::m_events
std::list< Events > m_events
list of events for a test run
Definition wifi-emlsr-link-switch-test.h:561
EmlsrSwitchMainPhyBackTest::m_expectedMainPhySwitchBackTime
Time m_expectedMainPhySwitchBackTime
expected main PHY switch back time
Definition wifi-emlsr-link-switch-test.h:567
EmlsrSwitchMainPhyBackTest::Transmit
void Transmit(Ptr< WifiMac > mac, uint8_t phyId, WifiConstPsduMap psduMap, WifiTxVector txVector, double txPowerW) override
Callback invoked when a FEM passes PSDUs to the PHY.
Definition wifi-emlsr-link-switch-test.cc:1590
EmlsrSwitchMainPhyBackTest::m_testIndex
uint8_t m_testIndex
index to iterate over test scenarios
Definition wifi-emlsr-link-switch-test.h:558
EmlsrSwitchMainPhyBackTest::RunOne
void RunOne()
Runs a test case and invokes itself for the next test case.
Definition wifi-emlsr-link-switch-test.cc:1863
EmlsrSwitchMainPhyBackTest::TestScenario
TestScenario
Enumeration indicating the tested scenario.
Definition wifi-emlsr-link-switch-test.h:507
EmlsrSwitchMainPhyBackTest::m_switchMainPhyBackDelay
Time m_switchMainPhyBackDelay
the switch main PHY back delay
Definition wifi-emlsr-link-switch-test.h:566
EmlsrSwitchMainPhyBackTest::StartTraffic
void StartTraffic() override
Start the generation of traffic (needs to be overridden)
Definition wifi-emlsr-link-switch-test.cc:1629
EmlsrSwitchMainPhyBackTest::m_linkIdForTid0
const uint8_t m_linkIdForTid0
ID of the link on which TID 0 is mapped.
Definition wifi-emlsr-link-switch-test.h:563
ns3::BooleanValue
AttributeValue implementation for Boolean.
Definition boolean.h:26
ns3::EmlsrManager::DONT_REQUEST_ACCESS
static constexpr bool DONT_REQUEST_ACCESS
do not request channel access when PHY switch ends
Definition emlsr-manager.h:418
ns3::HtPhy::GetHtMcs0
static WifiMode GetHtMcs0()
Return MCS 0 from HT MCS values.
ns3::InterferenceHelper
handles interference calculations
Definition interference-helper.h:131
ns3::Mac48Address::GetBroadcast
static Mac48Address GetBroadcast()
Definition mac48-address.cc:145
ns3::OfdmPhy::GetOfdmRate6Mbps
static WifiMode GetOfdmRate6Mbps()
Return a WifiMode for OFDM at 6 Mbps.
ns3::PointerValue
AttributeValue implementation for Pointer.
Definition pointer.h:37
ns3::PointerValue::Get
Ptr< T > Get() const
Definition pointer.h:223
ns3::Ptr
Smart pointer class similar to boost::intrusive_ptr.
Definition ptr.h:67
ns3::Simulator::Schedule
static EventId Schedule(const Time &delay, FUNC f, Ts &&... args)
Schedule an event to expire after delay.
Definition simulator.h:561
ns3::Simulator::Destroy
static void Destroy()
Execute the events scheduled with ScheduleDestroy().
Definition simulator.cc:131
ns3::Simulator::Now
static Time Now()
Return the current simulation virtual time.
Definition simulator.cc:197
ns3::Simulator::Run
static void Run()
Run the simulation.
Definition simulator.cc:167
ns3::Simulator::ScheduleNow
static EventId ScheduleNow(FUNC f, Ts &&... args)
Schedule an event to expire Now.
Definition simulator.h:595
ns3::Simulator::Stop
static void Stop()
Tell the Simulator the calling event should be the last one executed.
Definition simulator.cc:175
ns3::StringValue
Hold variables of type string.
Definition string.h:45
ns3::TestCase::AddTestCase
void AddTestCase(TestCase *testCase, Duration duration=Duration::QUICK)
Add an individual child TestCase to this test suite.
Definition test.cc:293
ns3::TestCase::Duration::QUICK
@ QUICK
Fast test.
Definition test.h:1054
ns3::TestSuite::Type
Type
Type of test.
Definition test.h:1257
ns3::TestSuite::Type::UNIT
@ UNIT
This test suite implements a Unit Test.
Definition test.h:1259
ns3::TestSuite::TestSuite
TestSuite(std::string name, Type type=Type::UNIT)
Construct a new test suite.
Definition test.cc:491
ns3::Time
Simulation virtual time values and global simulation resolution.
Definition nstime.h:96
ns3::Time::TimeStep
Time TimeStep(uint64_t ts)
Scheduler interface.
Definition nstime.h:1451
ns3::Time::US
@ US
microsecond
Definition nstime.h:109
ns3::Time::NS
@ NS
nanosecond
Definition nstime.h:110
ns3::TimeValue
AttributeValue implementation for Time.
Definition nstime.h:1456
ns3::UintegerValue
Hold an unsigned integer type.
Definition uinteger.h:34
ns3::WifiActionHeader::Peek
static std::pair< CategoryValue, ActionValue > Peek(Ptr< const Packet > pkt)
Peek an Action header from the given packet.
Definition mgt-action-headers.cc:495
ns3::WifiMacHeader
Implements the IEEE 802.11 MAC header.
Definition wifi-mac-header.h:87
ns3::WifiMacHeader::SetAddr1
void SetAddr1(Mac48Address address)
Fill the Address 1 field with the given address.
Definition wifi-mac-header.cc:80
ns3::WifiMacHeader::SetQosTid
void SetQosTid(uint8_t tid)
Set the TID for the QoS header.
Definition wifi-mac-header.cc:341
ns3::WifiMacHeader::SetDsFrom
void SetDsFrom()
Set the From DS bit in the Frame Control field.
Definition wifi-mac-header.cc:56
ns3::WifiMacHeader::SetAddr2
void SetAddr2(Mac48Address address)
Fill the Address 2 field with the given address.
Definition wifi-mac-header.cc:86
ns3::WifiMacHeader::SetAddr3
void SetAddr3(Mac48Address address)
Fill the Address 3 field with the given address.
Definition wifi-mac-header.cc:92
ns3::WifiMacHeader::SetDsNotTo
void SetDsNotTo()
Un-set the To DS bit in the Frame Control field.
Definition wifi-mac-header.cc:74
ns3::WifiModeValue
AttributeValue implementation for WifiMode.
Definition wifi-mode.h:244
ns3::WifiPhy::CalculateTxDuration
static Time CalculateTxDuration(uint32_t size, const WifiTxVector &txVector, WifiPhyBand band, uint16_t staId=SU_STA_ID)
Definition wifi-phy.cc:1568
ns3::WifiPhy::ChannelTuple
WifiChannelConfig::SegmentWithoutUnits ChannelTuple
kept for backward compatibility, can be deprecated when using strong types
Definition wifi-phy.h:949
ns3::WifiPhy::CalculatePhyPreambleAndHeaderDuration
static Time CalculatePhyPreambleAndHeaderDuration(const WifiTxVector &txVector)
Definition wifi-phy.cc:1561
ns3::WifiTxVector
This class mimics the TXVECTOR which is to be passed to the PHY in order to define the parameters whi...
Definition wifi-tx-vector.h:98
ns3::WifiTxVector::GetMode
WifiMode GetMode(uint16_t staId=SU_STA_ID) const
If this TX vector is associated with an SU PPDU, return the selected payload transmission mode.
Definition wifi-tx-vector.cc:124
ns3::WifiTxVector::GetChannelWidth
MHz_u GetChannelWidth() const
Definition wifi-tx-vector.cc:176
NS_ASSERT_MSG
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
Definition assert.h:75
ns3::Config::SetDefault
void SetDefault(std::string name, const AttributeValue &value)
Definition config.cc:886
NS_ABORT_MSG
#define NS_ABORT_MSG(msg)
Unconditional abnormal program termination with a message.
Definition abort.h:38
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition log.h:191
NS_LOG_DEBUG
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
Definition log.h:257
NS_LOG_INFO
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
Definition log.h:264
ns3::CreateObject
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition object.h:619
ns3::Create
Ptr< T > Create(Ts &&... args)
Create class instances by constructors with varying numbers of arguments and return them by Ptr.
Definition ptr.h:439
NS_TEST_EXPECT_MSG_GT_OR_EQ
#define NS_TEST_EXPECT_MSG_GT_OR_EQ(actual, limit, msg)
Test that an actual value is greater than or equal to limit and report if not.
Definition test.h:985
NS_TEST_ASSERT_MSG_LT
#define NS_TEST_ASSERT_MSG_LT(actual, limit, msg)
Test that an actual value is less than a limit and report and abort if not.
Definition test.h:698
NS_TEST_ASSERT_MSG_EQ
#define NS_TEST_ASSERT_MSG_EQ(actual, limit, msg)
Test that an actual and expected (limit) value are equal and report and abort if not.
Definition test.h:133
NS_TEST_EXPECT_MSG_LT_OR_EQ
#define NS_TEST_EXPECT_MSG_LT_OR_EQ(actual, limit, msg)
Test that an actual value is less than or equal to a limit and report if not.
Definition test.h:819
NS_TEST_EXPECT_MSG_LT
#define NS_TEST_EXPECT_MSG_LT(actual, limit, msg)
Test that an actual value is less than a limit and report if not.
Definition test.h:779
NS_TEST_EXPECT_MSG_GT
#define NS_TEST_EXPECT_MSG_GT(actual, limit, msg)
Test that an actual value is greater than a limit and report if not.
Definition test.h:945
NS_TEST_EXPECT_MSG_NE
#define NS_TEST_EXPECT_MSG_NE(actual, limit, msg)
Test that an actual and expected (limit) value are not equal and report if not.
Definition test.h:655
NS_TEST_EXPECT_MSG_EQ
#define NS_TEST_EXPECT_MSG_EQ(actual, limit, msg)
Test that an actual and expected (limit) value are equal and report if not.
Definition test.h:240
NS_TEST_ASSERT_MSG_NE
#define NS_TEST_ASSERT_MSG_NE(actual, limit, msg)
Test that an actual and expected (limit) value are not equal and report and abort if not.
Definition test.h:553
NS_TEST_ASSERT_MSG_GT
#define NS_TEST_ASSERT_MSG_GT(actual, limit, msg)
Test that an actual value is greater than a limit and report and abort if not.
Definition test.h:863
NS_TEST_ASSERT_MSG_GT_OR_EQ
#define NS_TEST_ASSERT_MSG_GT_OR_EQ(actual, limit, msg)
Test that an actual value is greater than or equal to a limit and report and abort if not.
Definition test.h:904
ns3::MicroSeconds
Time MicroSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition nstime.h:1393
ns3::NanoSeconds
Time NanoSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition nstime.h:1405
ns3::Seconds
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition nstime.h:1369
ns3::MilliSeconds
Time MilliSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition nstime.h:1381
ns3::WifiExpectedAccessReason::RX_END
@ RX_END
Definition channel-access-manager.h:50
ns3::WifiExpectedAccessReason::BUSY_END
@ BUSY_END
Definition channel-access-manager.h:51
ns3::WifiExpectedAccessReason::BACKOFF_END
@ BACKOFF_END
Definition channel-access-manager.h:60
ns3::WIFI_PHY_BAND_6GHZ
@ WIFI_PHY_BAND_6GHZ
The 6 GHz band.
Definition wifi-phy-band.h:28
ns3::WIFI_PHY_BAND_2_4GHZ
@ WIFI_PHY_BAND_2_4GHZ
The 2.4 GHz band.
Definition wifi-phy-band.h:24
ns3::WIFI_PHY_BAND_5GHZ
@ WIFI_PHY_BAND_5GHZ
The 5 GHz band.
Definition wifi-phy-band.h:26
ns3::WifiQueueBlockedReason::TID_NOT_MAPPED
@ TID_NOT_MAPPED
Definition wifi-mac-queue-scheduler.h:37
ns3::WifiQueueBlockedReason::WAITING_EMLSR_TRANSITION_DELAY
@ WAITING_EMLSR_TRANSITION_DELAY
Definition wifi-mac-queue-scheduler.h:36
ns3::WIFI_CHANLIST_PRIMARY
@ WIFI_CHANLIST_PRIMARY
Definition wifi-phy-common.h:513
ns3::AC_BE
@ AC_BE
Best Effort.
Definition qos-utils.h:65
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
ns3::MakeCallback
Callback< R, Args... > MakeCallback(R(T::*memPtr)(Args...), OBJ objPtr)
Build Callbacks for class method members which take varying numbers of arguments and potentially retu...
Definition callback.h:684
ns3::MHz_u
double MHz_u
MHz weak type.
Definition wifi-units.h:31
ns3::DynamicCast
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
Definition ptr.h:585
ns3::WIFI_MAC_CTL_TRIGGER
@ WIFI_MAC_CTL_TRIGGER
Definition wifi-mac-header.h:27
ns3::WIFI_MAC_CTL_RTS
@ WIFI_MAC_CTL_RTS
Definition wifi-mac-header.h:30
ns3::WIFI_MAC_CTL_CTS
@ WIFI_MAC_CTL_CTS
Definition wifi-mac-header.h:31
ns3::WIFI_MAC_MGT_ACTION
@ WIFI_MAC_MGT_ACTION
Definition wifi-mac-header.h:58
ns3::WIFI_MAC_MGT_ASSOCIATION_RESPONSE
@ WIFI_MAC_MGT_ASSOCIATION_RESPONSE
Definition wifi-mac-header.h:50
ns3::WIFI_MAC_CTL_ACK
@ WIFI_MAC_CTL_ACK
Definition wifi-mac-header.h:32
ns3::WIFI_MAC_MGT_ASSOCIATION_REQUEST
@ WIFI_MAC_MGT_ASSOCIATION_REQUEST
Definition wifi-mac-header.h:49
ns3::WIFI_MAC_CTL_BACKRESP
@ WIFI_MAC_CTL_BACKRESP
Definition wifi-mac-header.h:34
ns3::WIFI_MAC_CTL_END
@ WIFI_MAC_CTL_END
Definition wifi-mac-header.h:35
ns3::WIFI_MAC_QOSDATA
@ WIFI_MAC_QOSDATA
Definition wifi-mac-header.h:70
ns3::DbmToW
Watt_u DbmToW(dBm_u val)
Convert from dBm to Watts.
Definition wifi-utils.cc:32
ns3::MEDIUM_SYNC_THRESHOLD
const Time MEDIUM_SYNC_THRESHOLD
The aMediumSyncThreshold defined by Sec. 35.3.16.18.1 of 802.11be D4.0.
Definition wifi-standard-constants.cc:36
ns3::WifiConstPsduMap
std::unordered_map< uint16_t, Ptr< const WifiPsdu > > WifiConstPsduMap
Map of const PSDUs indexed by STA-ID.
Definition wifi-ppdu.h:38
ns3::SU_STA_ID
static constexpr uint16_t SU_STA_ID
STA_ID to identify a single user (SU)
Definition wifi-standard-constants.h:106
std
STL namespace.
ns3::EmlsrDlTxopIcfReceivedByAuxPhyTrace
Struct to trace that main PHY switched to start a DL TXOP after that an aux PHY received an ICF.
Definition emlsr-manager.h:713
ns3::EmlsrMainPhySwitchTrace
Base struct for EMLSR Main PHY switch traces.
Definition emlsr-manager.h:39
ns3::EmlsrMainPhySwitchTrace::GetName
virtual std::string_view GetName() const =0
ns3::EmlsrSwitchMainPhyBackTrace
Struct to trace that main PHY switched to leave a link on which an aux PHY was expected to gain a TXO...
Definition advanced-emlsr-manager.h:189