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wifi: Extend EMLSR test to check that Aux PHYs are put in sleep mode

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This commit is contained in:
Stefano Avallone
2023-09-26 20:32:48 +02:00
committed by Stefano Avallone
parent fafd2d9306
commit c1c65a168a
2 changed files with 102 additions and 4 deletions
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89
src/wifi/test/wifi-emlsr-test.cc
View File

@@ -2534,6 +2534,10 @@ EmlsrUlTxopTest::Transmit(Ptr<WifiMac> mac,
NS_TEST_EXPECT_MSG_EQ(+linkId, +m_mainPhyId, "AssocReq not sent by the main PHY");
break;
case WIFI_MAC_CTL_TRIGGER:
CheckInitialControlFrame(*psdu->begin(), txVector, linkId);
break;
case WIFI_MAC_CTL_RTS:
CheckRtsFrames(*psdu->begin(), txVector, linkId);
break;
@@ -2648,7 +2652,7 @@ EmlsrUlTxopTest::CheckQosFrames(const WifiConstPsduMap& psduMap,
false);
Simulator::Schedule(
txDuration + MicroSeconds(1) /* propagation delay */,
txDuration + MicroSeconds(MAX_PROPAGATION_DELAY_USEC),
[=, this]() {
CheckBlockedLink(
m_apMac,
@@ -2776,6 +2780,23 @@ EmlsrUlTxopTest::CheckBlockAck(const WifiConstPsduMap& psduMap,
auto txDuration =
WifiPhy::CalculateTxDuration(psduMap, txVector, m_apMac->GetWifiPhy(linkId)->GetPhyBand());
// in this test, BlockAck frames terminates TXOP. If a BlockAck frame is sent on an EMLSR link
// other than the main PHY link, it means that the aux PHY associated with that link is in
// sleep mode and it is resumed after the end of the BlockAck frame
if (linkId != m_mainPhyId && linkId != m_nonEmlsrLink)
{
Simulator::Schedule(txDuration - NanoSeconds(1), [=, this]() {
NS_TEST_EXPECT_MSG_EQ(m_staMacs[0]->GetDevice()->GetPhy(linkId)->IsStateSleep(),
true,
"Aux PHY on link " << +linkId << " not in sleep mode");
});
Simulator::Schedule(txDuration + NanoSeconds(1), [=, this]() {
NS_TEST_EXPECT_MSG_EQ(m_staMacs[0]->GetDevice()->GetPhy(linkId)->IsStateSleep(),
false,
"Aux PHY on link " << +linkId << " in sleep mode");
});
}
switch (m_countBlockAck)
{
case 1:
@@ -2880,6 +2901,33 @@ EmlsrUlTxopTest::CheckBlockAck(const WifiConstPsduMap& psduMap,
}
}
void
EmlsrUlTxopTest::CheckInitialControlFrame(Ptr<const WifiMpdu> mpdu,
const WifiTxVector& txVector,
uint8_t linkId)
{
CtrlTriggerHeader trigger;
mpdu->GetPacket()->PeekHeader(trigger);
if (!trigger.IsMuRts())
{
return;
}
if (linkId != m_mainPhyId && linkId != m_nonEmlsrLink)
{
// this is an ICF sent on an aux PHY link to start a DL TXOP. Given that aux PHYs do not
// switch channel, they are put in sleep mode while the main PHY is operating on their link
auto auxPhy = m_staMacs[0]->GetWifiPhy(linkId);
auto txDuration =
WifiPhy::CalculateTxDuration(mpdu->GetSize(), txVector, auxPhy->GetPhyBand());
Simulator::Schedule(txDuration + NanoSeconds(1), [=, this]() {
NS_TEST_EXPECT_MSG_EQ(auxPhy->IsStateSleep(),
true,
"Aux PHY on link " << +linkId << " not in sleep mode");
});
}
}
void
EmlsrUlTxopTest::CheckRtsFrames(Ptr<const WifiMpdu> mpdu,
const WifiTxVector& txVector,
@@ -2923,6 +2971,42 @@ EmlsrUlTxopTest::CheckCtsFrames(Ptr<const WifiMpdu> mpdu,
const WifiTxVector& txVector,
uint8_t linkId)
{
if (m_firstUlPktsGenTime.IsZero())
{
// this function only considers CTS frames sent after the first QoS data frame
return;
}
auto txDuration = WifiPhy::CalculateTxDuration(mpdu->GetSize(),
txVector,
m_apMac->GetWifiPhy(linkId)->GetPhyBand());
if (linkId != m_mainPhyId && linkId != m_nonEmlsrLink &&
mpdu->GetHeader().GetAddr1() == m_staMacs[0]->GetFrameExchangeManager(linkId)->GetAddress())
{
// this is a CTS sent to an aux PHY starting an UL TXOP. Given that aux PHYs do not
// switch channel, they are put in sleep mode when the main PHY starts operating on their
// link, which coincides with the end of CTS plus two propagation delays
auto auxPhy = m_staMacs[0]->GetWifiPhy(linkId);
Simulator::Schedule(txDuration, [=, this]() {
NS_TEST_EXPECT_MSG_EQ(auxPhy->IsStateSleep(),
false,
"Aux PHY on link " << +linkId << " already in sleep mode");
});
// if the CTS is corrupted, the TXOP ends and the aux PHY is not put to sleep
auto isStateSleep = !(m_corruptCts.has_value() && *m_corruptCts);
Simulator::Schedule(
txDuration + MicroSeconds(2 * MAX_PROPAGATION_DELAY_USEC) + NanoSeconds(1),
[=, this]() {
NS_TEST_EXPECT_MSG_EQ(auxPhy->IsStateSleep(),
isStateSleep,
"Aux PHY on link " << +linkId
<< (isStateSleep ? " not yet" : " already")
<< " in sleep mode");
});
}
if (m_corruptCts.has_value() && *m_corruptCts)
{
// corrupt reception at EMLSR client
@@ -2930,9 +3014,6 @@ EmlsrUlTxopTest::CheckCtsFrames(Ptr<const WifiMpdu> mpdu,
m_errorModel->SetList({mpdu->GetPacket()->GetUid()});
m_corruptCts = false;
auto txDuration = WifiPhy::CalculateTxDuration(mpdu->GetSize(),
txVector,
m_apMac->GetWifiPhy(linkId)->GetPhyBand());
// main PHY is about to complete channel switch when CTS ends
Simulator::Schedule(txDuration, [=, this]() {
const auto mainPhy = m_staMacs[0]->GetDevice()->GetPhy(m_mainPhyId);

17
src/wifi/test/wifi-emlsr-test.h
View File

@@ -517,6 +517,11 @@ class EmlsrDlTxopTest : public EmlsrOperationsTestBase
* not transmitted successfully. Specifically, we check that the main PHY is completing the
* channel switch when the (unsuccessful) reception of the CTS ends and that a new RTS/CTS
* exchange is carried out to protect the transmission of the last data frame.
* - While the main PHY is operating on the same link as an aux PHY (which does not switch
* channel), the aux PHY is put in sleep mode as soon as the main PHY starts operating on the
* link, stays in sleep mode until the TXOP ends and is resumed from sleep mode right after the
* end of the DL/UL TXOP.
*
*/
class EmlsrUlTxopTest : public EmlsrOperationsTestBase
{
@@ -571,6 +576,18 @@ class EmlsrUlTxopTest : public EmlsrOperationsTestBase
*/
void CheckRtsFrames(Ptr<const WifiMpdu> mpdu, const WifiTxVector& txVector, uint8_t linkId);
/**
* Check that appropriate actions are taken by the AP MLD transmitting an initial
* Control frame to an EMLSR client on the given link.
*
* \param mpdu the MPDU carrying the MU-RTS TF
* \param txVector the TXVECTOR used to send the PPDU
* \param linkId the ID of the given link
*/
void CheckInitialControlFrame(Ptr<const WifiMpdu> mpdu,
const WifiTxVector& txVector,
uint8_t linkId);
/**
* Check that appropriate actions are taken by the EMLSR client when receiving a CTS
* frame on the given link.