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wifi: Do not start switchMainPhyBack timer if aux PHYs switch link

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This commit is contained in:
Stefano Avallone
2024-12-02 16:17:45 +01:00
parent 03951a7211
commit 73752f2b90
1 changed files with 13 additions and 2 deletions
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15
src/wifi/model/eht/advanced-emlsr-manager.cc
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@@ -435,8 +435,10 @@ AdvancedEmlsrManager::CheckNavAndCcaLastPifs(Ptr<WifiPhy> phy, uint8_t linkId, P
}
else
{
// medium busy, check when access may be granted
if (!GetExpectedAccessWithinDelay(linkId,
// medium busy, check when access may be granted to determine whether to switch the
// main PHY back to the preferred link (if aux PHYs do not switch link)
if (!m_switchAuxPhy &&
!GetExpectedAccessWithinDelay(linkId,
m_switchMainPhyBackDelay + phy->GetChannelSwitchDelay()))
{
NS_LOG_DEBUG("No AC is expected to get backoff soon, switch main PHY back");
@@ -455,6 +457,11 @@ AdvancedEmlsrManager::CheckNavAndCcaLastPifs(Ptr<WifiPhy> phy, uint8_t linkId, P
Txop::DIDNT_HAVE_FRAMES_TO_TRANSMIT,
Txop::CHECK_MEDIUM_BUSY);
if (m_switchAuxPhy)
{
return;
}
// the main PHY must stay for some time on this link to check if it gets channel access.
// The timer is stopped if a DL or UL TXOP is started. When the timer expires, the main PHY
// switches back to the preferred link if SwitchAuxPhy is false
@@ -892,6 +899,10 @@ AdvancedEmlsrManager::SwitchMainPhyIfTxopToBeGainedByAuxPhy(uint8_t linkId,
linkId,
edca);
}
else if (m_switchAuxPhy)
{
return;
}
else if (!GetExpectedAccessWithinDelay(linkId,
accessDelay + m_switchMainPhyBackDelay +
mainPhy->GetChannelSwitchDelay()))