16#include "ns3/ap-wifi-mac.h"
18#include "ns3/mgt-action-headers.h"
19#include "ns3/spectrum-signal-parameters.h"
20#include "ns3/sta-wifi-mac.h"
21#include "ns3/wifi-mac-queue.h"
22#include "ns3/wifi-net-device.h"
23#include "ns3/wifi-spectrum-phy-interface.h"
27#undef NS_LOG_APPEND_CONTEXT
28#define NS_LOG_APPEND_CONTEXT WIFI_FEM_NS_LOG_APPEND_CONTEXT
56 static TypeId tid =
TypeId(
"ns3::EhtFrameExchangeManager")
58 .AddConstructor<EhtFrameExchangeManager>()
59 .SetGroupName(
"Wifi");
95 protectionManager->SetLinkId(linkId);
99 ackManager->SetLinkId(linkId);
113 !mpdu->GetHeader().IsQosData() ||
115 mpdu->GetHeader().GetAddr1().IsGroup() ||
122 auto& hdr = mpdu->GetHeader();
126 hdr.SetAddr1(*address);
134 if (hdr.IsQosAmsdu())
136 if (hdr.IsToDs() && !hdr.IsFromDs())
139 hdr.SetAddr3(hdr.GetAddr1());
141 else if (!hdr.IsToDs() && hdr.IsFromDs())
144 hdr.SetAddr3(hdr.GetAddr2());
158 return m_staMac->GetMacQueueScheduler()->GetAllQueuesBlockedOnLink(
172 for (uint8_t linkId = 0; linkId <
m_apMac->GetNLinks(); linkId++)
180 std::set<Mac48Address> emlsrClients;
185 if (ehtFem->m_ongoingTxopEnd.IsPending() && ehtFem->m_txopHolder &&
186 m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(
187 ehtFem->m_txopHolder.value()))
189 NS_LOG_DEBUG(
"Involved in UL TXOP: " << ehtFem->m_txopHolder.value());
190 emlsrClients.insert(ehtFem->m_txopHolder.value());
194 for (
const auto& address : ehtFem->m_protectedStas)
196 if (
m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(address))
199 emlsrClients.insert(address);
203 for (
const auto& address : emlsrClients)
206 m_mac->GetWifiRemoteStationManager(linkId)->GetMldAddress(address);
207 NS_ASSERT_MSG(mldAddress,
"MLD address not found for " << address);
220 "No mask for client " << *mldAddress <<
" on link " << +
m_linkId);
225 "Transmissions to " << *mldAddress <<
" on link " << +
m_linkId
226 <<
" are not blocked");
237 std::optional<Time> timeToCtsEnd;
244 NS_LOG_DEBUG(
"StartTransmission called while another EMLSR link is being used");
249 auto emlsrManager =
m_staMac->GetEmlsrManager();
251 if (
auto elapsed = emlsrManager->GetElapsedMediumSyncDelayTimer(
m_linkId);
252 elapsed && emlsrManager->MediumSyncDelayNTxopsExceeded(
m_linkId))
254 NS_LOG_DEBUG(
"No new TXOP attempts allowed while MediumSyncDelay is running");
258 emlsrManager->GetMediumSyncDuration() - *elapsed,
277 if (
const auto [startTxop, delay] = emlsrManager->GetDelayUntilAccessRequest(
283 if (delay.IsStrictlyPositive())
339 auto sigBMode = phy->GetSigBMode(txVector);
345 if (
m_apMac && psdu->GetHeader(0).IsTrigger())
357 for (uint8_t linkId = 0; linkId <
m_apMac->GetNLinks(); ++linkId)
360 m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*clientMld))
371 psdu->GetHeader(0).IsRts())
382 auto delay =
m_apMac->GetApEmlsrManager()->GetDelayOnTxPsduNotForEmlsr(psdu,
405 m_staMac->GetEmlsrManager()->GetInDeviceInterference())
408 m_staMac->GetEmlsrManager()->NotifyInDeviceInterferenceStart(
m_linkId, txDuration);
429 psduMap.cbegin()->second->GetPayload(0)->PeekHeader(trigger);
434 for (
const auto& client : recipients)
444 for (uint8_t linkId = 0; linkId <
m_apMac->GetNLinks(); ++linkId)
447 m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*clientMld))
449 m_mac->BlockUnicastTxOnLinks(
464 const auto psduMapIt = psduMap.find(aid);
465 const auto aidNotFoundAndNotTf = (psduMapIt == psduMap.cend()) && !
IsTrigger(psduMap);
467 const auto psdu = (psduMapIt != psduMap.cend() ? psduMapIt : psduMap.cbegin())->
second;
483 m_staMac->GetEmlsrManager()->GetInDeviceInterference())
486 m_staMac->GetEmlsrManager()->NotifyInDeviceInterferenceStart(
m_linkId, txDuration);
500 for (
const auto& phy :
m_staMac->GetDevice()->GetPhys())
506 if (
auto id =
m_staMac->GetLinkForPhy(phy);
509 const auto txPower = phy->GetPower(txVector.
GetTxPowerLevel()) + phy->GetTxGain();
533 for (
const auto& [range, interface] : rxPhy->GetSpectrumPhyInterfaces())
535 if (!interface->GetRxSpectrumModel())
547 spectrumSignalParams->duration = duration;
548 spectrumSignalParams->txPhy = txPhy->GetCurrentInterface();
549 spectrumSignalParams->txAntenna = txPhy->GetAntenna();
550 spectrumSignalParams->psd = psd;
552 rxPhy->StartRx(spectrumSignalParams, interface);
586 NS_ASSERT_MSG(mldAddress,
"MLD address not found for " << address);
588 std::set<uint8_t> linkIds{
m_linkId};
617 for (uint8_t linkId = 0; linkId <
m_apMac->GetNLinks(); ++linkId)
619 if (!
m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*mldAddress))
626 if (ehtFem->m_ongoingTxopEnd.IsPending() && ehtFem->m_txopHolder &&
627 m_mac->GetWifiRemoteStationManager(linkId)->GetMldAddress(*ehtFem->m_txopHolder) ==
630 NS_LOG_DEBUG(
"EMLSR client " << *mldAddress <<
" is the holder of an UL TXOP on link "
631 << +linkId <<
", do not unblock links");
635 if (linkId ==
m_linkId && !checkThisLink)
640 linkIds.insert(linkId);
643 m_apMac->GetWifiRemoteStationManager(linkId)->GetAffiliatedStaAddress(*mldAddress);
645 (ehtFem->m_sentRtsTo.contains(*linkAddr) || ehtFem->m_sentFrameTo.contains(*linkAddr) ||
646 ehtFem->m_protectedStas.contains(*linkAddr)))
649 <<
" has been sent an ICF, do not unblock links");
667 NS_ASSERT_MSG(mldAddress,
"MLD address not found for " << address);
670 auto blockLinks = [=,
this](
bool checkThisLink) {
673 NS_LOG_DEBUG(
"Could not unblock transmissions to " << address);
678 std::set<uint8_t> linkIds;
679 for (uint8_t linkId = 0; linkId <
m_mac->GetNLinks(); linkId++)
681 if (
m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*mldAddress))
683 linkIds.insert(linkId);
692 auto unblockLinks = [=,
this]() {
702 emlCapabilities->get().emlsrTransitionDelay);
704 endDelay.IsZero() ? unblockLinks()
717 delay.
IsZero() ? blockLinks(
false)
741 m_staMac->NotifySwitchingEmlsrLink(phy, linkId, delay);
758 const auto sequence =
m_txMiddle->GetNextSequenceNumberFor(&hdr);
767 packet->AddHeader(frame);
768 packet->AddHeader(actionHdr);
792 for (uint8_t linkId = 0; linkId <
m_mac->GetNLinks(); linkId++)
794 std::optional<Mac48Address> linkAddress;
796 (linkAddress =
m_mac->GetWifiRemoteStationManager(linkId)->GetAffiliatedStaAddress(
798 (optRssi =
m_mac->GetWifiRemoteStationManager(linkId)->GetMostRecentRssi(*linkAddress)))
820 uint8_t maxPaddingDelay = 0;
821 bool isUnprotectedEmlsrDst =
false;
823 for (
const auto& address : recipients)
831 isUnprotectedEmlsrDst =
true;
834 maxPaddingDelay = std::max(maxPaddingDelay, emlCapabilities->get().emlsrPaddingDelay);
837 if (isUnprotectedEmlsrDst)
846 if (maxPaddingDelay > 0)
850 std::size_t nDbps = rate / 1e6 * 4;
875 auto mainPhy =
m_staMac->GetDevice()->GetPhy(
m_staMac->GetEmlsrManager()->GetMainPhyId());
884 if (mainPhy->IsStateSwitching() ||
m_mac->GetLinkForPhy(mainPhy) !=
m_linkId)
886 NS_LOG_DEBUG(
"Main PHY is switching or operating on another link, abort ICF response");
925 for (
const auto& address : clients)
953 if (
const auto apEmlsrManager =
m_apMac->GetApEmlsrManager();
956 return apEmlsrManager->UpdateCwAfterFailedIcf();
970 if (
const auto apEmlsrManager =
m_apMac->GetApEmlsrManager();
973 return apEmlsrManager->ReportFailedIcf();
988 if (staMissedTbPpduFrom.size() != nSolicitedStations)
995 const auto apEmlsrManager =
m_apMac->GetApEmlsrManager();
996 const auto updateFailedCw =
997 crossLinkCollision && apEmlsrManager ? apEmlsrManager->UpdateCwAfterFailedIcf() :
true;
1003 std::size_t nSolicitedStations)
1009 if (staMissedTbPpduFrom.size() != nSolicitedStations)
1021 const std::set<Mac48Address>& staMissedResponseFrom)
const
1027 auto crossLinkCollision =
true;
1032 for (
const auto& address : staMissedResponseFrom)
1036 crossLinkCollision =
false;
1043 std::set<uint8_t> linkIds;
1044 for (uint8_t linkId = 0; linkId <
m_apMac->GetNLinks(); linkId++)
1046 if (
m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*mldAddress) &&
1049 linkIds.insert(linkId);
1053 if (std::any_of(linkIds.cbegin(),
1056 [=,
this](uint8_t
id) {
1057 auto ehtFem = StaticCast<EhtFrameExchangeManager>(
1058 m_mac->GetFrameExchangeManager(id));
1059 return ehtFem->m_ongoingTxopEnd.IsPending() && ehtFem->m_txopHolder &&
1060 m_mac->GetMldAddress(ehtFem->m_txopHolder.value()) == mldAddress;
1070 if (std::none_of(linkIds.cbegin(),
1074 [=,
this](uint8_t
id) {
1075 auto macHdr = m_mac->GetFrameExchangeManager(id)->GetReceivedMacHdr();
1076 if (!macHdr.has_value())
1080 auto addr2 = macHdr->get().GetAddr2();
1081 return m_mac->GetMldAddress(addr2) == mldAddress;
1084 crossLinkCollision =
false;
1088 return crossLinkCollision;
1100 if (m_apMac && GetWifiRemoteStationManager()->GetEmlsrEnabled(addr2))
1105 auto mldAddress = GetWifiRemoteStationManager()->GetMldAddress(addr2);
1106 NS_ASSERT_MSG(mldAddress,
"MLD address not found for " << addr2);
1108 for (uint8_t linkId = 0; linkId < m_apMac->GetNLinks(); ++linkId)
1110 if (linkId != m_linkId &&
1111 m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*mldAddress))
1116 m_apMac->GetMacQueueScheduler()->GetQueueLinkMask(
AC_BE, queueId, linkId);
1117 NS_ASSERT_MSG(mask,
"No mask for client " << *mldAddress <<
" on link " << +linkId);
1119 static_cast<std::size_t
>(WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK)))
1122 "Transmissions to " << *mldAddress <<
" on link " << +linkId
1123 <<
" are not blocked");
1126 m_mac->BlockUnicastTxOnLinks(WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK,
1134 HeFrameExchangeManager::SendCtsAfterRts(rtsHdr, rtsTxVector, rtsSnr);
1150 if (psdu->GetAddr1() == address)
1159 if (mpdu->GetHeader().IsTrigger())
1162 mpdu->GetPacket()->PeekHeader(trigger);
1172 if (psdu->GetHeader(0).IsCts())
1174 if (m_apMac && psdu->GetAddr1() == m_self)
1178 if (m_staMac && psdu->GetAddr1() == m_bssid)
1186 if (psdu->GetHeader(0).IsBlockAck())
1189 psdu->GetPayload(0)->PeekHeader(blockAck);
1204EhtFrameExchangeManager::TransmissionSucceeded()
1208 if (m_staMac && m_staMac->IsEmlsrLink(m_linkId) &&
1209 m_staMac->GetEmlsrManager()->GetElapsedMediumSyncDelayTimer(m_linkId))
1211 NS_LOG_DEBUG(
"Reset the counter of TXOP attempts allowed while "
1212 "MediumSyncDelay is running");
1213 m_staMac->GetEmlsrManager()->ResetMediumSyncDelayNTxops(m_linkId);
1216 HeFrameExchangeManager::TransmissionSucceeded();
1220EhtFrameExchangeManager::TransmissionFailed(
bool forceCurrentCw)
1224 if (m_staMac && m_staMac->IsEmlsrLink(m_linkId) &&
1225 m_staMac->GetEmlsrManager()->GetElapsedMediumSyncDelayTimer(m_linkId))
1227 NS_LOG_DEBUG(
"Decrement the remaining number of TXOP attempts allowed while "
1228 "MediumSyncDelay is running");
1229 m_staMac->GetEmlsrManager()->DecrementMediumSyncDelayNTxops(m_linkId);
1232 HeFrameExchangeManager::TransmissionFailed(forceCurrentCw);
1236EhtFrameExchangeManager::NotifyChannelReleased(
Ptr<Txop> txop)
1247 if (
const auto remTxNav = m_txNav - Simulator::Now(); remTxNav.IsStrictlyPositive())
1252 for (
const auto& address : m_protectedStas)
1254 if (GetWifiRemoteStationManager()->GetEmlsrEnabled(address))
1256 EmlsrSwitchToListening(address, delay);
1260 else if (m_staMac && m_staMac->IsEmlsrLink(m_linkId))
1263 auto edca = DynamicCast<QosTxop>(txop);
1267 m_staMac->GetEmlsrManager()->NotifyTxopEnd(m_linkId, edca);
1270 HeFrameExchangeManager::NotifyChannelReleased(txop);
1281 if (m_staMac && m_staMac->IsEmlsrLink(m_linkId) &&
1282 m_staMac->GetEmlsrManager()->GetElapsedMediumSyncDelayTimer(m_linkId))
1284 m_staMac->GetEmlsrManager()->CancelMediumSyncDelayTimer(m_linkId);
1296 for (
auto clientIt = m_protectedStas.begin(); clientIt != m_protectedStas.end();)
1305 if (GetWifiRemoteStationManager()->GetEmlsrEnabled(*clientIt) && !txVector.
IsUlMu() &&
1306 !m_txTimer.GetStasExpectedToRespond().contains(*clientIt))
1308 EmlsrSwitchToListening(*clientIt,
Seconds(0));
1310 clientIt = m_protectedStas.erase(clientIt);
1319 HeFrameExchangeManager::PreProcessFrame(psdu, txVector);
1327 HeFrameExchangeManager::PostProcessFrame(psdu, txVector);
1329 if (m_apMac && m_apMac->GetApEmlsrManager())
1331 m_apMac->GetApEmlsrManager()->NotifyPsduRxOk(m_linkId, psdu);
1334 if (m_apMac && m_txopHolder == psdu->GetAddr2() &&
1335 GetWifiRemoteStationManager()->GetEmlsrEnabled(*m_txopHolder))
1337 const auto unrespondedRts = (psdu->GetHeader(0).IsRts() && !m_sendCtsEvent.IsPending());
1339 if (!m_ongoingTxopEnd.IsPending() && !unrespondedRts)
1344 Simulator::ScheduleNow(&EhtFrameExchangeManager::TxopEnd,
this, m_txopHolder);
1347 UpdateTxopEndOnRxEnd(psdu->GetDuration());
1350 if (m_staMac && m_ongoingTxopEnd.IsPending())
1352 if (GetEmlsrSwitchToListening(psdu, m_staMac->GetAssociationId(), m_self))
1355 m_ongoingTxopEnd.Cancel();
1356 m_staMac->GetEmlsrManager()->NotifyTxopEnd(m_linkId);
1360 UpdateTxopEndOnRxEnd(psdu->GetDuration());
1364 if (m_staMac && m_dlTxopStart)
1368 m_ongoingTxopEnd.Cancel();
1369 NS_LOG_DEBUG(
"Expected TXOP end=" << (Simulator::Now() + m_phy->GetSifs()).As(Time::S));
1370 m_ongoingTxopEnd = Simulator::Schedule(m_phy->GetSifs() + TimeStep(1),
1371 &EhtFrameExchangeManager::TxopEnd,
1375 m_staMac->GetEmlsrManager()->NotifyDlTxopStart(m_linkId);
1376 m_dlTxopStart =
false;
1388 if (m_ongoingTxopEnd.IsPending())
1394 if (
auto holder = FindTxopHolder(hdr, txVector); holder != sender)
1396 NS_LOG_DEBUG(
"Sender (" << sender <<
") differs from the TXOP holder ("
1401 if (!GetWifiRemoteStationManager()->GetEmlsrEnabled(sender))
1403 NS_LOG_DEBUG(
"Sender (" << sender <<
") is not an EMLSR client");
1407 NS_LOG_DEBUG(
"EMLSR client " << sender <<
" is starting a TXOP");
1410 auto mldAddress = GetWifiRemoteStationManager()->GetMldAddress(sender);
1413 for (uint8_t linkId = 0; linkId < m_apMac->GetNLinks(); ++linkId)
1415 if (linkId != m_linkId &&
1416 m_mac->GetWifiRemoteStationManager(linkId)->GetEmlsrEnabled(*mldAddress))
1418 m_mac->BlockUnicastTxOnLinks(WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK,
1426 m_mac->GetWifiRemoteStationManager(linkId)->GetAffiliatedStaAddress(*mldAddress);
1429 StaticCast<EhtFrameExchangeManager>(m_mac->GetFrameExchangeManager(linkId));
1430 NS_LOG_DEBUG(
"Remove " << *linkAddr <<
" from protected STAs");
1431 ehtFem->m_protectedStas.erase(*linkAddr);
1432 ehtFem->m_sentRtsTo.erase(*linkAddr);
1433 ehtFem->m_sentFrameTo.erase(*linkAddr);
1440 m_mac->UnblockUnicastTxOnLinks(WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK,
1445 if (
auto it = m_transDelayTimer.find(*mldAddress);
1446 it != m_transDelayTimer.end() && it->second.IsPending())
1448 it->second.PeekEventImpl()->Invoke();
1449 it->second.Cancel();
1456EhtFrameExchangeManager::GetOngoingTxopEndEvent()
1458 return m_ongoingTxopEnd;
1466 if (m_apMac && m_apMac->GetApEmlsrManager())
1468 m_apMac->GetApEmlsrManager()->NotifyPsduRxError(m_linkId, psdu);
1478 NS_LOG_FUNCTION(
this << *mpdu << rxSignalInfo << txVector << inAmpdu);
1481 NS_ASSERT(mpdu->GetHeader().GetAddr1().IsGroup() || mpdu->GetHeader().GetAddr1() == m_self);
1483 const auto& hdr = mpdu->GetHeader();
1484 auto sender = hdr.GetAddr2();
1486 if (hdr.IsTrigger())
1494 mpdu->GetPacket()->PeekHeader(trigger);
1496 if (hdr.GetAddr1() != m_self &&
1497 (!hdr.GetAddr1().IsBroadcast() || !m_staMac->IsAssociated() ||
1504 if ((trigger.
IsMuRts() || trigger.
IsBsrp()) && !m_ongoingTxopEnd.IsPending() &&
1505 m_staMac->IsEmlsrLink(m_linkId))
1508 if (DropReceivedIcf())
1513 m_dlTxopStart =
true;
1516 else if (m_staMac && m_staMac->IsEmlsrLink(m_linkId) && !m_ongoingTxopEnd.IsPending() &&
1517 m_phy->GetPhyId() == m_staMac->GetEmlsrManager()->GetMainPhyId() &&
1518 (hdr.IsRts() || hdr.IsBlockAckReq() || (hdr.IsData() && hdr.GetAddr1() == m_self)))
1521 m_dlTxopStart =
true;
1524 if (!m_dlTxopStart && ShallDropReceivedMpdu(mpdu))
1530 HeFrameExchangeManager::ReceiveMpdu(mpdu, rxSignalInfo, txVector, inAmpdu);
1532 if (m_apMac && GetWifiRemoteStationManager()->GetEmlsrEnabled(sender))
1534 if (hdr.IsRts() && !m_sendCtsEvent.IsPending())
1537 EmlsrSwitchToListening(sender,
Time{0});
1543 CheckEmlsrClientStartingTxop(hdr, txVector);
1551 const std::vector<bool>& perMpduStatus)
1554 this << *psdu << rxSignalInfo << txVector << perMpduStatus.size()
1555 << std::all_of(perMpduStatus.begin(), perMpduStatus.end(), [](
bool v) { return v; }));
1557 const auto& hdr = psdu->GetHeader(0);
1558 if (m_staMac && m_staMac->IsEmlsrLink(m_linkId) && !m_ongoingTxopEnd.IsPending() &&
1559 m_phy->GetPhyId() == m_staMac->GetEmlsrManager()->GetMainPhyId() &&
1560 (hdr.IsData() && hdr.GetAddr1() == m_self))
1563 m_dlTxopStart =
true;
1566 if (!m_dlTxopStart && ShallDropReceivedMpdu(*psdu->begin()))
1571 HeFrameExchangeManager::EndReceiveAmpdu(psdu, rxSignalInfo, txVector, perMpduStatus);
1580 if (!m_staMac || !m_staMac->IsEmlsrLink(m_linkId))
1597 if (m_sendCtsEvent.IsPending())
1599 NS_LOG_DEBUG(
"Dropping " << *mpdu <<
" received when CTS is scheduled for TX on link "
1604 const auto& hdr = mpdu->GetHeader();
1614 if (hdr.IsMgt() || hdr.IsCts() || hdr.IsCfEnd() || (hdr.IsData() && hdr.GetAddr1().IsGroup()))
1620 if (m_mac->GetLinkForPhy(m_staMac->GetEmlsrManager()->GetMainPhyId()) != m_linkId)
1622 NS_LOG_DEBUG(
"Dropping " << *mpdu <<
" received by an aux PHY on link " << +m_linkId);
1627 if (!m_ongoingTxopEnd.IsPending() &&
1629 return m_mac->GetQosTxop(aciAcPair.first)->GetTxopStartTime(m_linkId).has_value();
1632 NS_LOG_DEBUG(
"Dropping " << *mpdu <<
" received by main PHY on link " << +m_linkId
1633 <<
" while no TXOP is ongoing");
1642EhtFrameExchangeManager::DropReceivedIcf()
1646 auto emlsrManager = m_staMac->GetEmlsrManager();
1649 if (UsingOtherEmlsrLink())
1653 auto apMldAddress = GetWifiRemoteStationManager()->GetMldAddress(m_bssid);
1654 NS_ASSERT_MSG(apMldAddress,
"MLD address not found for " << m_bssid);
1656 if (
auto it = std::find_if(
1657 m_staMac->GetLinkIds().cbegin(),
1658 m_staMac->GetLinkIds().cend(),
1660 [=,
this](uint8_t linkId) {
1662 StaticCast<EhtFrameExchangeManager>(m_mac->GetFrameExchangeManager(linkId));
1663 return linkId != m_linkId && m_staMac->IsEmlsrLink(linkId) &&
1664 ehtFem->m_ongoingTxopEnd.IsPending() && ehtFem->m_txopHolder &&
1665 m_mac->GetWifiRemoteStationManager(linkId)->GetMldAddress(
1666 *ehtFem->m_txopHolder) == apMldAddress;
1668 it != m_staMac->GetLinkIds().cend())
1674 StaticCast<EhtFrameExchangeManager>(m_mac->GetFrameExchangeManager(*it))
1675 ->m_ongoingTxopEnd.Cancel();
1679 m_staMac->UnblockTxOnLink({m_linkId}, WifiQueueBlockedReason::USING_OTHER_EMLSR_LINK);
1686 NS_LOG_DEBUG(
"Drop ICF because another EMLSR link is being used");
1687 m_icfDropCallback({WifiIcfDrop::USING_OTHER_LINK, m_linkId, m_bssid});
1711 else if (
auto mainPhy = m_staMac->GetDevice()->GetPhy(emlsrManager->GetMainPhyId());
1714 auto reason = emlsrManager->CheckMainPhyTakesOverDlTxop(m_linkId);
1716 if (reason.has_value())
1719 "Drop ICF due to not enough time for the main PHY to switch link; reason = "
1721 m_icfDropCallback({*reason, m_linkId, m_bssid});
1729EhtFrameExchangeManager::TxopEnd(
const std::optional<Mac48Address>& txopHolder)
1733 if (m_phy && m_phy->GetInfoIfRxingPhyHeader())
1739 NS_LOG_DEBUG(
"PHY is decoding the PHY header of PPDU, postpone TXOP end");
1741 &EhtFrameExchangeManager::TxopEnd,
1747 if (m_staMac && m_staMac->IsEmlsrLink(m_linkId))
1749 m_staMac->GetEmlsrManager()->NotifyTxopEnd(m_linkId);
1751 else if (m_apMac && txopHolder && GetWifiRemoteStationManager()->GetEmlsrEnabled(*txopHolder))
1754 EmlsrSwitchToListening(*txopHolder,
Seconds(0));
1759EhtFrameExchangeManager::UpdateTxopEndOnTxStart(
Time txDuration,
Time durationId)
1763 if (!m_ongoingTxopEnd.IsPending())
1769 m_ongoingTxopEnd.Cancel();
1772 if (m_txTimer.IsRunning())
1777 delay = m_txTimer.GetDelayLeft();
1779 else if (durationId <= m_phy->GetSifs())
1783 NS_LOG_DEBUG(
"Assume TXOP will end based on Duration/ID value");
1794 delay =
Min(delay, txDuration + durationId);
1797 NS_LOG_DEBUG(
"Expected TXOP end=" << (Simulator::Now() + delay).As(Time::S));
1799 Simulator::Schedule(delay, &EhtFrameExchangeManager::TxopEnd,
this, m_txopHolder);
1803EhtFrameExchangeManager::UpdateTxopEndOnRxStartIndication(
Time psduDuration)
1814 m_ongoingTxopEnd.Cancel();
1816 NS_LOG_DEBUG(
"Expected TXOP end=" << (Simulator::Now() + psduDuration).As(Time::S));
1817 m_ongoingTxopEnd = Simulator::Schedule(psduDuration +
NanoSeconds(1),
1818 &EhtFrameExchangeManager::TxopEnd,
1824EhtFrameExchangeManager::UpdateTxopEndOnRxEnd(
Time durationId)
1828 if (!m_ongoingTxopEnd.IsPending())
1834 m_ongoingTxopEnd.Cancel();
1838 if (durationId <= m_phy->GetSifs())
1840 NS_LOG_DEBUG(
"Assume TXOP ended based on Duration/ID value");
1841 TxopEnd(m_txopHolder);
1849 delay =
Min(delay, durationId);
1850 NS_LOG_DEBUG(
"Expected TXOP end=" << (Simulator::Now() + delay).As(Time::S));
1852 Simulator::Schedule(delay, &EhtFrameExchangeManager::TxopEnd,
this, m_txopHolder);
a polymophic address class
EhtFrameExchangeManager handles the frame exchange sequences for EHT stations.
void GenerateInDeviceInterferenceForAll(const Time &txDuration, const WifiTxVector &txVector)
Generate in-device interference caused by a transmission on this link for all the other PHYs of this ...
void ForwardPsduMapDown(WifiConstPsduMap psduMap, WifiTxVector &txVector) override
Forward a map of PSDUs down to the PHY layer.
void ReceivedQosNullAfterBsrpTf(Mac48Address sender) override
Perform the actions required when receiving QoS Null frame(s) from the given sender after a BSRP Trig...
void SetIcfPaddingAndTxVector(CtrlTriggerHeader &trigger, WifiTxVector &txVector) const
Set the padding and the TXVECTOR of the given Trigger Frame, in case it is an Initial Control Frame f...
bool UsingOtherEmlsrLink() const
void NavResetTimeout() override
Reset the NAV upon expiration of the NAV reset timer.
bool GetUpdateCwOnCtsTimeout() const override
void ForwardPsduDown(Ptr< const WifiPsdu > psdu, WifiTxVector &txVector) override
Forward a PSDU down to the PHY layer.
void EmlsrSwitchToListening(Mac48Address address, const Time &delay)
This method is intended to be called when an AP MLD detects that an EMLSR client previously involved ...
void BlockAcksInTbPpduTimeout(WifiPsduMap *psduMap, std::size_t nSolicitedStations) override
Take the necessary actions after that some BlockAck frames are missing in response to a DL MU PPDU.
void SendEmlOmn(const Mac48Address &dest, const MgtEmlOmn &frame)
Send an EML Operating Mode Notification frame to the given station.
Ptr< WifiMpdu > CreateAliasIfNeeded(Ptr< WifiMpdu > mpdu) const override
Create an alias of the given MPDU for transmission by this Frame Exchange Manager.
void ProtectionCompleted() override
Transmit prepared frame immediately, if no protection was used, or in a SIFS, if protection was compl...
void TbPpduTimeout(WifiPsduMap *psduMap, std::size_t nSolicitedStations) override
Take the necessary actions after that some TB PPDUs are missing in response to Trigger Frame.
bool GetReportRtsFailed() const override
void IntraBssNavResetTimeout() override
Reset the intra-BSS NAV upon expiration of the intra-BSS NAV reset timer.
void GenerateInDeviceInterference(Ptr< WifiPhy > phy, Time duration, Watt_u txPower)
Generate an in-device interference of the given power for the given duration for the given PHY.
void SendCtsAfterMuRts(const WifiMacHeader &muRtsHdr, const CtrlTriggerHeader &trigger, double muRtsSnr) override
Send CTS after receiving an MU-RTS.
void SwitchToListeningOrUnblockLinks(const std::set< Mac48Address > &clients)
For each EMLSR client in the given set of clients that did not respond to a frame requesting a respon...
EhtFrameExchangeManager()
bool IsCrossLinkCollision(const std::set< Mac48Address > &staMissedResponseFrom) const
Check whether all the stations that did not respond (to a certain frame) are EMLSR clients trying to ...
std::optional< dBm_u > GetMostRecentRssi(const Mac48Address &address) const override
Get the RSSI of the most recent packet received from the station having the given address.
bool EmlsrClientCannotRespondToIcf() const
bool GetEmlsrSwitchToListening(Ptr< const WifiPsdu > psdu, uint16_t aid, const Mac48Address &address) const
static TypeId GetTypeId()
Get the type ID.
void DoDispose() override
Destructor implementation.
std::unordered_map< Mac48Address, EventId, WifiAddressHash > m_transDelayTimer
MLD address-indexed map of transition delay timers.
void NotifyChannelReleased(Ptr< Txop > txop) override
Notify the given Txop that channel has been released.
EventId m_ongoingTxopEnd
event indicating the possible end of the current TXOP (of which we are not the holder)
void RxStartIndication(WifiTxVector txVector, Time psduDuration) override
void UpdateTxopEndOnTxStart(Time txDuration, Time durationId)
Update the TXOP end timer when starting a frame transmission.
void SendQosNullFramesInTbPpdu(const CtrlTriggerHeader &trigger, const WifiMacHeader &hdr) override
Send QoS Null frames in response to a Basic or BSRP Trigger Frame.
void UpdateTxopEndOnRxStartIndication(Time psduDuration)
Update the TXOP end timer when receiving a PHY-RXSTART.indication.
~EhtFrameExchangeManager() override
bool UnblockEmlsrLinksIfAllowed(Mac48Address address, bool checkThisLink)
Unblock transmissions on all the links of the given EMLSR client, provided that the latter is not inv...
void CtsAfterMuRtsTimeout(Ptr< WifiMpdu > muRts, const WifiTxVector &txVector) override
Called when no CTS frame is received after an MU-RTS.
void NotifySwitchingEmlsrLink(Ptr< WifiPhy > phy, uint8_t linkId, Time delay)
Notify that the given PHY will switch channel to operate on another EMLSR link after the given delay.
bool StartTransmission(Ptr< Txop > edca, MHz_u allowedWidth) override
Request the FrameExchangeManager to start a frame exchange sequence.
void SetLinkId(uint8_t linkId) override
Set the ID of the link this Frame Exchange Manager is associated with.
An identifier for simulation events.
void Cancel()
This method is syntactic sugar for the ns3::Simulator::Cancel method.
std::set< Mac48Address > m_sentRtsTo
the STA(s) which we sent an RTS to (waiting for CTS)
uint8_t m_linkId
the ID of the link this object is associated with
Ptr< WifiMac > m_mac
the MAC layer on this station
virtual void ResetPhy()
Remove WifiPhy associated with this FrameExchangeManager.
Ptr< WifiRemoteStationManager > GetWifiRemoteStationManager() const
Ptr< MacTxMiddle > m_txMiddle
the MAC TX Middle on this station
virtual bool GetReportRtsFailed() const
Mac48Address m_self
the MAC address of this device
WifiTxTimer m_txTimer
the timer set upon frame transmission
std::set< Mac48Address > m_protectedStas
STAs that have replied to an RTS in this TXOP.
Mac48Address GetAddress() const
Get the MAC address.
virtual void SetLinkId(uint8_t linkId)
Set the ID of the link this Frame Exchange Manager is associated with.
Ptr< WifiAckManager > GetAckManager() const
Get the Acknowledgment Manager used by this node.
Ptr< WifiProtectionManager > GetProtectionManager() const
Get the Protection Manager used by this node.
Ptr< WifiPhy > m_phy
the PHY layer on this station
Ptr< ApWifiMac > m_apMac
AP MAC layer pointer (null if not an AP)
Mac48Address m_bssid
BSSID address (Mac48Address)
virtual bool StartTransmission(Ptr< Txop > dcf, MHz_u allowedWidth)
Request the FrameExchangeManager to start a frame exchange sequence.
MHz_u m_allowedWidth
the allowed width for the current transmission
Ptr< StaWifiMac > m_staMac
STA MAC layer pointer (null if not a STA)
virtual bool GetUpdateCwOnCtsTimeout() const
HeFrameExchangeManager handles the frame exchange sequences for HE stations.
virtual void SendQosNullFramesInTbPpdu(const CtrlTriggerHeader &trigger, const WifiMacHeader &hdr)
Send QoS Null frames in response to a Basic or BSRP Trigger Frame.
void DoDispose() override
Destructor implementation.
virtual void IntraBssNavResetTimeout()
Reset the intra-BSS NAV upon expiration of the intra-BSS NAV reset timer.
virtual void ReceivedQosNullAfterBsrpTf(Mac48Address sender)
Perform the actions required when receiving QoS Null frame(s) from the given sender after a BSRP Trig...
void RxStartIndication(WifiTxVector txVector, Time psduDuration) override
virtual void CtsAfterMuRtsTimeout(Ptr< WifiMpdu > muRts, const WifiTxVector &txVector)
Called when no CTS frame is received after an MU-RTS.
void NavResetTimeout() override
Reset the NAV upon expiration of the NAV reset timer.
void ProtectionCompleted() override
Transmit prepared frame immediately, if no protection was used, or in a SIFS, if protection was compl...
virtual void SendCtsAfterMuRts(const WifiMacHeader &muRtsHdr, const CtrlTriggerHeader &trigger, double muRtsSnr)
Send CTS after receiving an MU-RTS.
virtual void BlockAcksInTbPpduTimeout(WifiPsduMap *psduMap, std::size_t nSolicitedStations)
Take the necessary actions after that some BlockAck frames are missing in response to a DL MU PPDU.
virtual void ForwardPsduMapDown(WifiConstPsduMap psduMap, WifiTxVector &txVector)
Forward a map of PSDUs down to the PHY layer.
std::set< Mac48Address > GetTfRecipients(const CtrlTriggerHeader &trigger) const
Get the (link) address of the non-AP stations solicited by the given Trigger Frame.
void DoTbPpduTimeout(WifiPsduMap *psduMap, std::size_t nSolicitedStations, bool updateFailedCw)
Take the necessary actions after that some TB PPDUs are missing in response to Trigger Frame.
virtual std::optional< dBm_u > GetMostRecentRssi(const Mac48Address &address) const
Get the RSSI of the most recent packet received from the station having the given address.
Ptr< MpduAggregator > m_mpduAggregator
A-MPDU aggregator.
virtual void ForwardPsduDown(Ptr< const WifiPsdu > psdu, WifiTxVector &txVector)
Forward a PSDU down to the PHY layer.
Ptr< MsduAggregator > m_msduAggregator
A-MSDU aggregator.
Implement the header for Action frames of type EML Operating Mode Notification.
Smart pointer class similar to boost::intrusive_ptr.
virtual Ptr< WifiMpdu > CreateAliasIfNeeded(Ptr< WifiMpdu > mpdu) const
Create an alias of the given MPDU for transmission by this Frame Exchange Manager.
static EventId Schedule(const Time &delay, FUNC f, Ts &&... args)
Schedule an event to expire after delay.
Simulation virtual time values and global simulation resolution.
TimeWithUnit As(const Unit unit=Time::AUTO) const
Attach a unit to a Time, to facilitate output in a specific unit.
bool IsStrictlyPositive() const
Exactly equivalent to t > 0.
bool IsZero() const
Exactly equivalent to t == 0.
void StartAccessAfterEvent(uint8_t linkId, bool hadFramesToTransmit, bool checkMediumBusy)
Request channel access on the given link after the occurrence of an event that possibly requires to g...
static constexpr bool DIDNT_HAVE_FRAMES_TO_TRANSMIT
no packet available for transmission was in the queue
static constexpr bool CHECK_MEDIUM_BUSY
generation of backoff (also) depends on the busy/idle state of the medium
static constexpr bool DONT_CHECK_MEDIUM_BUSY
generation of backoff is independent of the busy/idle state of the medium
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
uint64_t GetDataRate(MHz_u channelWidth, Time guardInterval, uint8_t nss) const
static Time CalculateTxDuration(uint32_t size, const WifiTxVector &txVector, WifiPhyBand band, uint16_t staId=SU_STA_ID)
WifiPhyBand GetPhyBand() const
Get the configured Wi-Fi band.
Ptr< PhyEntity > GetPhyEntity(WifiModulationClass modulation) const
Get the supported PHY entity corresponding to the modulation class.
const std::set< Mac48Address > & GetStasExpectedToRespond() const
This class mimics the TXVECTOR which is to be passed to the PHY in order to define the parameters whi...
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.
WifiPreamble GetPreambleType() const
void SetSigBMode(const WifiMode &mode)
Set the MCS used for SIG-B.
uint8_t GetTxPowerLevel() const
Declaration of ns3::EhtPhy class.
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
#define NS_ABORT_MSG_IF(cond, msg)
Abnormal program termination if a condition is true, with a message.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
#define NS_LOG_FUNCTION_NOARGS()
Output the name of the function.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Ptr< T > Create(Ts &&... args)
Create class instances by constructors with varying numbers of arguments and return them by Ptr.
Time MicroSeconds(uint64_t value)
Construct a Time in the indicated unit.
Time NanoSeconds(uint64_t value)
Construct a Time in the indicated unit.
Time Seconds(double value)
Construct a Time in the indicated unit.
@ WIFI_MOD_CLASS_EHT
EHT (Clause 36)
@ WAITING_EMLSR_TRANSITION_DELAY
Every class exported by the ns3 library is enclosed in the ns3 namespace.
U * PeekPointer(const Ptr< U > &p)
std:: tuple< WifiContainerQueueType, WifiReceiverAddressType, Mac48Address, std::optional< uint8_t > > WifiContainerQueueId
Tuple (queue type, receiver address type, Address, TID) identifying a container queue.
static constexpr uint8_t WAIT_FOR_RXSTART_DELAY_USEC
Additional time (exceeding 20 us) to wait for a PHY-RXSTART.indication when the PHY is decoding a PHY...
bool IsTrigger(const WifiPsduMap &psduMap)
Ptr< T1 > DynamicCast(const Ptr< T2 > &p)
Cast a Ptr.
std::unordered_map< uint16_t, Ptr< WifiPsdu > > WifiPsduMap
Map of PSDUs indexed by STA-ID.
const std::map< AcIndex, WifiAc > wifiAcList
Map containing the four ACs in increasing order of priority (according to Table 10-1 "UP-to-AC Mappin...
Watt_u DbmToW(dBm_u val)
Convert from dBm to Watts.
Ptr< T1 > StaticCast(const Ptr< T2 > &p)
Cast a Ptr.
std::unordered_map< uint16_t, Ptr< const WifiPsdu > > WifiConstPsduMap
Map of const PSDUs indexed by STA-ID.
const Time EMLSR_RX_PHY_START_DELAY
aRxPHYStartDelay value to use when waiting for a new frame in the context of EMLSR operations (Sec.
static Time DecodeEmlsrTransitionDelay(uint8_t value)
RxSignalInfo structure containing info on the received signal.