Test the transmission of DL frames to EMLSR clients. More...

#include "wifi-emlsr-test.h"

Inheritance diagram for EmlsrDlTxopTest:

Collaboration diagram for EmlsrDlTxopTest:

Classes
struct	Params
	Parameters for the EMLSR DL TXOP test. More...

Public Member Functions
	EmlsrDlTxopTest (const Params &params)
	Constructor.

	~EmlsrDlTxopTest () override=default

Public Member Functions inherited from EmlsrOperationsTestBase
	EmlsrOperationsTestBase (const std::string &name)
	Constructor.

	~EmlsrOperationsTestBase () override=default

Public Member Functions inherited from ns3::TestCase
	TestCase (const TestCase &)=delete

virtual	~TestCase ()
	Destructor.

std::string	GetName () const

TestCase &	operator= (const TestCase &)=delete

Protected Member Functions
void	CheckBlockAck (const WifiConstPsduMap &psduMap, const WifiTxVector &txVector, uint8_t phyId)
	Check that appropriate actions are taken by the AP MLD receiving a PPDU containing BlockAck frames from EMLSR clients on the given link.

void	CheckEmlNotificationFrame (Ptr< const WifiMpdu > mpdu, const WifiTxVector &txVector, uint8_t linkId)
	Check that appropriate actions are taken by the AP MLD transmitting an EML Operating Mode Notification response frame to an EMLSR client on the given link.

void	CheckInitialControlFrame (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.

void	CheckPmModeAfterAssociation (const Mac48Address &address)
	Check that the AP MLD considers the correct Power Management mode for the links setup with the given non-AP MLD.

void	CheckQosFrames (const WifiConstPsduMap &psduMap, const WifiTxVector &txVector, uint8_t linkId)
	Check that appropriate actions are taken by the AP MLD transmitting a PPDU containing QoS data frames to EMLSR clients on the given link.

void	CheckResults ()
	Check that the simulation produced the expected results.

void	DoRun () override
	Implementation to actually run this TestCase.

void	DoSetup () override
	Implementation to do any local setup required for this TestCase.

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.

Protected Member Functions inherited from EmlsrOperationsTestBase
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 blocked or unblocked for the given reason on the given device.

void	DoSetup () override
	Implementation to do any local setup required for this TestCase.

Ptr< PacketSocketClient >	GetApplication (TrafficDirection dir, std::size_t staId, std::size_t count, std::size_t pktSize) const

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.

Protected Member Functions inherited from ns3::TestCase
	TestCase (std::string name)
	Constructor.

void	AddTestCase (TestCase *testCase, Duration duration=Duration::QUICK)
	Add an individual child TestCase to this test suite.

TestCase *	GetParent () const
	Get the parent of this TestCase.

bool	IsStatusFailure () const
	Check if any tests failed.

bool	IsStatusSuccess () const
	Check if all tests passed.

void	SetDataDir (std::string directory)
	Set the data directory where reference trace files can be found.

void	ReportTestFailure (std::string cond, std::string actual, std::string limit, std::string message, std::string file, int32_t line)
	Log the failure of this TestCase.

bool	MustAssertOnFailure () const
	Check if this run should assert on failure.

bool	MustContinueOnFailure () const
	Check if this run should continue on failure.

std::string	CreateDataDirFilename (std::string filename)
	Construct the full path to a file in the data directory.

std::string	CreateTempDirFilename (std::string filename)
	Construct the full path to a file in a temporary directory.

Private Member Functions
void	EnableEmlsrMode ()
	Enable EMLSR mode on the next EMLSR client.

void	StartTraffic () override
	Start the generation of traffic (needs to be overridden)

Private Attributes
std::size_t	m_countBlockAck
	counter for BlockAck frames (transition delay test)

std::size_t	m_countQoSframes
	counter for QoS frames (transition delay test)

Time	m_emlsrEnabledTime
	when EMLSR mode has been enabled on all EMLSR clients

std::set< uint8_t >	m_emlsrLinks
	IDs of the links on which EMLSR mode has to be enabled.

Ptr< ListErrorModel >	m_errorModel
	error rate model to corrupt BlockAck at AP MLD

const Time	m_fe2to3delay
	time interval between 2nd and 3rd frame exchange sequences after the enablement of EMLSR mode

Additional Inherited Members
Public Types inherited from EmlsrOperationsTestBase
enum	TrafficDirection : uint8_t { DOWNLINK = 0 , UPLINK }
	Enumeration for traffic directions. More...

Public Types inherited from ns3::TestCase
enum class	Duration { QUICK = 1 , EXTENSIVE = 2 , TAKES_FOREVER = 3 }
	How long the test takes to execute. More...

using	instead = Duration

Static Public Attributes inherited from ns3::TestCase
static constexpr auto	EXTENSIVE = Duration::EXTENSIVE

static constexpr auto	QUICK = Duration::QUICK

static constexpr auto	TAKES_FOREVER

Protected Attributes inherited from EmlsrOperationsTestBase
Ptr< ApWifiMac >	m_apMac
	AP wifi MAC.

std::vector< PacketSocketAddress >	m_dlSockets
	packet socket address for DL traffic

Time	m_duration {0}
	simulation duration

bool	m_establishBaDl {false}
	whether BA needs to be established (for TID 0) with the AP as originator

bool	m_establishBaUl {false}
	whether BA needs to be established (for TID 0) with the AP as recipient

uint16_t	m_lastAid {0}
	AID of last associated station.

std::set< uint8_t >	m_linksToEnableEmlsrOn
	IDs of the links on which EMLSR mode has to be enabled.

uint8_t	m_mainPhyId {0}
	ID of the main PHY.

std::size_t	m_nEmlsrStations {1}
	number of stations to create that activate EMLSR

std::size_t	m_nNonEmlsrStations {0}
	number of stations to create that do not activate EMLSR

std::vector< Time >	m_paddingDelay
	Padding Delay advertised by the non-AP MLD.

std::vector< Ptr< StaWifiMac > >	m_staMacs
	MACs of the non-AP MLDs.

std::vector< Time >	m_transitionDelay
	Transition Delay advertised by the non-AP MLD.

Time	m_transitionTimeout {MicroSeconds(128)}
	Transition Timeout advertised by the AP MLD.

std::vector< FrameInfo >	m_txPsdus
	transmitted PSDUs

std::vector< PacketSocketAddress >	m_ulSockets
	packet socket address for UL traffic

Detailed Description

Test the transmission of DL frames to EMLSR clients.

This test considers an AP MLD and a configurable number of non-AP MLDs that support EMLSR and a configurable number of non-AP MLDs that do not support EMLSR. All MLDs have three setup links, while the set of EMLSR links for the EMLSR clients is configurable. Block ack agreements (for TID 0, with the AP MLD as originator) are established with all the non-AP MLDs before that EMLSR clients send the EML Operating Mode Notification frame to enable the EMLSR mode on their EMLSR links.

Before enabling EMLSR mode, it is checked that:

all EMLSR links (but the link used for ML setup) of the EMLSR clients are considered to be in power save mode and are blocked by the AP MLD; all the other links have transitioned to active mode and are not blocked
no MU-RTS Trigger Frame is sent as Initial control frame
In case of EMLSR clients having no link that is not an EMLSR link and is different than the link used for ML setup, the two A-MPDUs used to trigger BA establishment are transmitted one after another on the link used for ML setup. Otherwise, the two A-MPDUs are sent concurrently on two distinct links

After enabling EMLSR mode, it is checked that:

all EMLSR links of the EMLSR clients are considered to be in active mode and are not blocked by the AP MLD
If all setup links are EMLSR links, the first two frame exchanges are both protected by MU-RTS TF and occur one after another. Otherwise, one frame exchange occurs on the non-EMLSR link and is not protected by MU-RTS TF; the other frame exchange occurs on an EMLSR link and is protected by MU-RTS TF
the AP MLD blocks transmission on all other EMLSR links when sending an ICF to an EMLSR client
After completing a frame exchange with an EMLSR client, the AP MLD can start another frame exchange with that EMLSR client within the same TXOP (after a SIFS) without sending an ICF
During the transition delay, all EMLSR links are not used for DL transmissions
The padding added to Initial Control frames is the largest among all the EMLSR clients solicited by the ICF

After disabling EMLSR mode, it is checked that:

all EMLSR links (but the link used to exchange EML Notification frames) of the EMLSR clients are considered to be in power save mode and are blocked by the AP MLD
an MU-RTS Trigger Frame is sent by the AP MLD as ICF for sending the EML Notification response, unless the link used to exchange EML Notification frames is a non-EMLSR link
no MU-RTS Trigger Frame is used as ICF for QoS data frames
In case of EMLSR clients having no link that is not an EMLSR link and is different than the link used to exchange EML Notification frames, the two A-MPDUs are transmitted one after another on the link used to exchange EML Notification frames. Otherwise, the two A-MPDUs are sent concurrently on two distinct links

Definition at line 349 of file wifi-emlsr-test.h.

Constructor & Destructor Documentation

◆ EmlsrDlTxopTest()

EmlsrDlTxopTest::EmlsrDlTxopTest ( const Params & params )

Constructor.

Parameters

params parameters for the EMLSR DL TXOP test

Definition at line 700 of file wifi-emlsr-test.cc.

References EmlsrOperationsTestBase::m_duration, EmlsrOperationsTestBase::m_establishBaDl, EmlsrOperationsTestBase::m_linksToEnableEmlsrOn, EmlsrOperationsTestBase::m_mainPhyId, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_nNonEmlsrStations, EmlsrOperationsTestBase::m_paddingDelay, EmlsrOperationsTestBase::m_transitionDelay, EmlsrOperationsTestBase::m_transitionTimeout, NS_ABORT_MSG_IF, and ns3::Seconds().

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◆ ~EmlsrDlTxopTest()

EmlsrDlTxopTest::~EmlsrDlTxopTest ( )

overridedefault

Member Function Documentation

◆ CheckBlockAck()

void EmlsrDlTxopTest::CheckBlockAck	(	const WifiConstPsduMap &	psduMap,
		const WifiTxVector &	txVector,
		uint8_t	phyId
	)

protected

Check that appropriate actions are taken by the AP MLD receiving a PPDU containing BlockAck frames from EMLSR clients on the given link.

Parameters

psduMap	the PSDU carrying BlockAck frames
txVector	the TXVECTOR used to send the PPDU
phyId	the ID of the PHY transmitting the PSDU(s)

Definition at line 2036 of file wifi-emlsr-test.cc.

References ns3::WifiPhy::CalculateTxDuration(), EmlsrOperationsTestBase::CheckBlockedLink(), ns3::WifiMac::GetAddress(), ns3::Mac48Address::GetBroadcast(), ns3::WifiTxVector::GetChannelWidth(), ns3::WifiMac::GetNLinks(), ns3::EventId::GetUid(), ns3::WifiMac::GetWifiPhy(), ns3::WifiMac::GetWifiRemoteStationManager(), ns3::Time::IsZero(), EmlsrOperationsTestBase::m_apMac, m_countBlockAck, m_emlsrEnabledTime, m_emlsrLinks, m_errorModel, m_fe2to3delay, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_staMacs, EmlsrOperationsTestBase::m_transitionDelay, ns3::MicroSeconds(), ns3::Simulator::Now(), NS_TEST_ASSERT_MSG_EQ, ns3::Simulator::Schedule(), ns3::ListErrorModel::SetList(), and ns3::WIFI_MAC_CTL_END.

Referenced by Transmit().

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◆ CheckEmlNotificationFrame()

void EmlsrDlTxopTest::CheckEmlNotificationFrame	(	Ptr< const WifiMpdu >	mpdu,
		const WifiTxVector &	txVector,
		uint8_t	linkId
	)

protected

Check that appropriate actions are taken by the AP MLD transmitting an EML Operating Mode Notification response frame to an EMLSR client on the given link.

Parameters

mpdu	the MPDU carrying the EML Operating Mode Notification frame
txVector	the TXVECTOR used to send the PPDU
linkId	the ID of the given link

Definition at line 1616 of file wifi-emlsr-test.cc.

References ns3::WifiPhy::CalculateTxDuration(), ns3::GetAckSize(), ns3::WifiMac::GetWifiPhy(), EmlsrOperationsTestBase::m_apMac, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_staMacs, NS_TEST_ASSERT_MSG_EQ, ns3::WifiActionHeader::Remove(), and ns3::Simulator::Schedule().

Referenced by Transmit().

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◆ CheckInitialControlFrame()

void EmlsrDlTxopTest::CheckInitialControlFrame	(	Ptr< const WifiMpdu >	mpdu,
		const WifiTxVector &	txVector,
		uint8_t	linkId
	)

protected

Check that appropriate actions are taken by the AP MLD transmitting an initial Control frame to an EMLSR client on the given link.

Parameters

mpdu	the MPDU carrying the MU-RTS TF
txVector	the TXVECTOR used to send the PPDU
linkId	the ID of the given link

Definition at line 1709 of file wifi-emlsr-test.cc.

References ns3::WifiPhy::CalculateTxDuration(), EmlsrOperationsTestBase::CheckBlockedLink(), ns3::WifiMac::GetAddress(), ns3::WifiMode::GetDataRate(), ns3::ApWifiMac::GetMldOrLinkAddressByAid(), ns3::WifiTxVector::GetMode(), ns3::WifiMac::GetNLinks(), ns3::WifiPhy::GetPhyBand(), ns3::WifiTxVector::GetPreambleType(), ns3::WifiMac::GetWifiPhy(), ns3::WifiMac::GetWifiRemoteStationManager(), ns3::CtrlTriggerHeader::IsMuRts(), ns3::Time::IsStrictlyPositive(), EmlsrOperationsTestBase::m_apMac, m_emlsrEnabledTime, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_paddingDelay, EmlsrOperationsTestBase::m_staMacs, Max, ns3::NanoSeconds(), NS_TEST_ASSERT_MSG_EQ, NS_TEST_EXPECT_MSG_EQ, NS_TEST_EXPECT_MSG_LT, ns3::Simulator::Schedule(), ns3::CtrlTriggerHeader::SetPaddingSize(), ns3::Time::US, and ns3::WIFI_PREAMBLE_HT_MF.

Referenced by Transmit().

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◆ CheckPmModeAfterAssociation()

void EmlsrDlTxopTest::CheckPmModeAfterAssociation ( const Mac48Address & address )

protected

Check that the AP MLD considers the correct Power Management mode for the links setup with the given non-AP MLD.

This method is intended to be called shortly after ML setup.

Parameters

address a link address of the given non-AP MLD

Definition at line 1576 of file wifi-emlsr-test.cc.

References EmlsrOperationsTestBase::CheckBlockedLink(), ns3::WifiMac::GetNLinks(), ns3::WifiMac::GetWifiRemoteStationManager(), EmlsrOperationsTestBase::m_apMac, m_emlsrLinks, EmlsrOperationsTestBase::m_mainPhyId, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_nNonEmlsrStations, EmlsrOperationsTestBase::m_staMacs, NS_TEST_ASSERT_MSG_EQ, and NS_TEST_EXPECT_MSG_EQ.

Referenced by Transmit().

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◆ CheckQosFrames()

void EmlsrDlTxopTest::CheckQosFrames	(	const WifiConstPsduMap &	psduMap,
		const WifiTxVector &	txVector,
		uint8_t	linkId
	)

protected

Check that appropriate actions are taken by the AP MLD transmitting a PPDU containing QoS data frames to EMLSR clients on the given link.

Parameters

psduMap	the PSDU(s) carrying QoS data frames
txVector	the TXVECTOR used to send the PPDU
linkId	the ID of the given link

Definition at line 1831 of file wifi-emlsr-test.cc.

References ns3::Node::AddApplication(), ns3::WifiMac::BlockUnicastTxOnLinks(), ns3::WifiPhy::CalculateTxDuration(), EmlsrOperationsTestBase::CheckBlockedLink(), EmlsrOperationsTestBase::DOWNLINK, ns3::WifiMac::GetAddress(), EmlsrOperationsTestBase::GetApplication(), ns3::WifiMac::GetDevice(), ns3::WifiMac::GetNLinks(), ns3::WifiNetDevice::GetNode(), ns3::WifiPhy::GetPhyBand(), ns3::WifiMac::GetWifiPhy(), ns3::Time::IsZero(), EmlsrOperationsTestBase::m_apMac, m_countQoSframes, m_emlsrEnabledTime, m_emlsrLinks, m_fe2to3delay, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_staMacs, EmlsrOperationsTestBase::m_transitionDelay, ns3::MicroSeconds(), ns3::NanoSeconds(), ns3::Simulator::Now(), NS_TEST_EXPECT_MSG_EQ, ns3::Simulator::Schedule(), and ns3::WifiMac::UnblockUnicastTxOnLinks().

Referenced by Transmit().

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◆ CheckResults()

void EmlsrDlTxopTest::CheckResults ( )

protected

Check that the simulation produced the expected results.

Before enabling EMLSR mode, no MU-RTS TF should be sent. Four packets are generated after association to trigger the establishment of a Block Ack agreement. The TXOP Limit and the MCS are set such that two packets can be transmitted in a TXOP, hence we expect that the AP MLD sends two A-MPDUs to each non-AP MLD.

EMLSR client with EMLSR mode to be enabled on all links: after ML setup, all other links stay in power save mode, hence BA establishment occurs on the same link.

[link 0] ─────────────────────────────────────────────────────────────────────────── | power save mode

┌─────┐ ┌─────┐ ┌───┬───┐ ┌───┬───┐ ┌───┐ │Assoc│ │ADDBA│ ┌───┐ │QoS│QoS│ │QoS│QoS│ [link 1] │ACK│ │Resp │ │ Req │ │ACK│ │ 0 │ 1 │ │ 2 │ 3 │ ───┬─────┬┴───┴──┴─────┴┬───┬─┴─────┴┬───┬─┬─────┬┴───┴─┴───┴───┴┬──┬─┴───┴───┴┬──┬─── │Assoc│ │ACK│ │ACK│ │ADDBA│ │BA│ │BA│ │ Req │ └───┘ └───┘ │Resp │ └──┘ └──┘ └─────┘ └─────┘

[link 2] ─────────────────────────────────────────────────────────────────────────── | power save mode

EMLSR client with EMLSR mode to be enabled on not all the links: after ML setup, the other EMLSR links stay in power save mode, the non-EMLSR link (link 1) transitions to active mode.

                                        ┌─────┐                   ┌───┬───┐
                                 ┌───┐  │ADDBA│             ┌───┐ │QoS│QoS│

[link 0 - non EMLSR] │ACK│ │ Req │ │ACK│ │ 2 │ 3 │ ──────────────────────────────┬────┬┴───┴──┴─────┴┬───┬─┬─────┬┴───┴─┴───┴───┴┬──┬─ │Data│ │ACK│ │ADDBA│ │BA│ │Null│ └───┘ │Resp │ └──┘ └────┘ └─────┘ ┌─────┐ ┌───┬───┐ ┌───┐ │Assoc│ │QoS│QoS│ [link 1] │ACK│ │Resp │ │ 0 │ 1 │ ───┬─────┬┴───┴──┴─────┴┬───┬──────────────────────────────────┴───┴───┴┬──┬─────── │Assoc│ │ACK│ │BA│ │ Req │ └───┘ └──┘ └─────┘

[link 2] ─────────────────────────────────────────────────────────────────────────── | power save mode

Non-EMLSR client (not shown): after ML setup, all other links transition to active mode by sending a Data Null frame; QoS data frame exchanges occur on two links simultaneously.

If this is an EMLSR client and there is no setup link other than the one used to establish association that is not an EMLSR link, then the two A-MPDUs are sent one after another on the link used to establish association.

Otherwise, the two A-MPDUs can be sent concurrently on two distinct links (may be the link used to establish association and a non-EMLSR link).

After enabling EMLSR mode, MU-RTS TF should only be sent on EMLSR links. After the exchange of EML Operating Mode Notification frames, a number of packets are generated at the AP MLD to prepare two A-MPDUs for each non-AP MLD.

EMLSR client with EMLSR mode to be enabled on all links (A is the EMLSR client, B is the non-EMLSR client): ┌─────┬─────┐ │QoS 4│QoS 5│ │ to A│ to A│ ┌───┐ ├─────┼─────┤ │MU │ │QoS 4│QoS 5│ [link 0] │RTS│ │ to B│ to B│ ──────────────────────────┴───┴┬───┬┴─────┴─────┴┬──┬──────────── │CTS│ │BA│ ├───┤ ├──┤ │CTS│ │BA│ └───┘ └──┘ ┌───┐ ┌─────┬─────┐ ┌───┐ │EML│ │QoS 6│QoS 7│ [link 1] │ACK│ │OM │ │ to B│ to B│ ────┬───┬┴───┴──┴───┴┬───┬─┴─────┴─────┴┬──┬──────────────────────────────────── │EML│ │ACK│ │BA│ │OM │ └───┘ └──┘ └───┘ ┌───┐ ┌─────┬─────┐ │MU │ │QoS 6│QoS 7│ [link 2] │RTS│ │ to A│ to A│ ─────────────────────────────────────────────────────────┴───┴┬───┬┴─────┴─────┴┬──┬─ │CTS│ │BA│ └───┘ └──┘

EMLSR client with EMLSR mode to be enabled on not all the links (A is the EMLSR client, B is the non-EMLSR client): ┌─────┬─────┐ │QoS 4│QoS 5│ │ to A│ to A│ ├─────┼─────┤ │QoS 4│QoS 5│ [link 0 - non EMLSR] │ to B│ to B│ ───────────────────────────┴─────┴─────┴┬──┬─────────────────────────── │BA│ ├──┤ │BA│ └──┘ ┌─────┬─────┐ │QoS 6│QoS 7│ │ to A│ to A│ ┌───┐ ┌───┐ ├─────┼─────┤ ┌───┐ │EML│ │MU │ │QoS 6│QoS 7│ [link 1] │ACK│ │OM │ │RTS│ │ to B│ to B│ ────┬───┬┴───┴──┴───┴┬───┬─┴───┴┬───┬┴─────┴─────┴┬──┬──────────── │EML│ │ACK│ │CTS│ │BA│ │OM │ └───┘ ├───┤ ├──┤ └───┘ │CTS│ │BA│ └───┘ └──┘

[link 2] ────────────────────────────────────────────────────────────────────────────────

Store a QoS data frame or an MU-RTS TF followed by a QoS data frame

Let's focus on the first two frame exchanges for each EMLSR clients. If all setup links are EMLSR links, both frame exchanges are protected by MU-RTS TF and occur one after another. Otherwise, one frame exchange occurs on the non-EMLSR link and is not protected by MU-RTS TF; the other frame exchange occurs on an EMLSR link and is protected by MU-RTS TF.

A and B are two EMLSR clients. No ICF before the second QoS data frame because B has not switched to listening mode. ICF is sent before the third QoS data frame because A has switched to listening mode. C is a non-EMLSR client.

                   ┌─────┐          A switches to listening
                   │QoS x│          after transition delay
                   │ to A│          |
         ┌───┐     ├─────┤    ┌─────┐
         │MU │     │QoS x│    │QoS y│

[link 0] │RTS│ │ to B│ │ to B│ ────────────┴───┴┬───┬┴─────┴┬──┬┴─────┴┬──┬──────────── │CTS│ │BA│ │BA│ ├───┤ ├──┤ └──┘ │CTS│ │BA│ └───┘ └──┘ AP continues the TXOP A switches to listening after PIFS recovery after transition delay │ │ ┌─────┐ ┌───┐ ┌─────┐ │┌───┐ ┌───┐ │QoS z│ │MU │ │QoS x│ ││MU │ ┌───┐ │CF-│ [link 1] │ to C│ │RTS│ │ to A│ ││RTS│ │BAR│ │End│ ───────────────────────────────┴─────┴┬──┬┴───┴┬───┬┴─────┴┬──┬┴───┴┬───┬┴───┴┬──┬┴───┴─ │BA│ │CTS│ │BA│ │CTS│ │BA│ └──┘ └───┘ └──x └───┘ └──┘

After disabling EMLSR mode, no MU-RTS TF should be sent. After the exchange of EML Operating Mode Notification frames, a number of packets are generated at the AP MLD to prepare two A-MPDUs for each EMLSR client.

EMLSR client with EMLSR mode to be enabled on all links (A is the EMLSR client, B is the non-EMLSR client):

[link 0] | power save mode ──────────────────────────────────────────────────────── ┌─────┬─────┐ ┌──────┬──────┐ │QoS 8│QoS 9│ │QoS 10│QoS 11│ │ to A│ to A│ │ to A │ to A │ ┌───┐ ┌───┐ ├─────┼─────┤ ├──────┼──────┤ ┌───┐ │MU │ │EML│ │QoS 8│QoS 9│ │QoS 10│QoS 11│ [link 1] │ACK│ │RTS│ │OM │ │ to B│ to B│ │ to B │ to B │ ────┬───┬┴───┴──┴───┴┬───┬┴───┴┬───┬──┴─────┴─────┴┬──┬────┴──────┴──────┴┬──┬───── │EML│ │CTS│ │ACK│ │BA│ │BA│ │OM │ └───┘ └───┘ ├──┤ ├──┤ └───┘ │BA│ │BA│ └──┘ └──┘

[link 2] | power save mode ────────────────────────────────────────────────────────────────────────────

EMLSR client with EMLSR mode to be enabled on not all the links (A is the EMLSR client, B is the non-EMLSR client): ┌─────┬─────┐ │QoS 8│QoS 9│ │ to A│ to A│ ├─────┼─────┤ │QoS 8│QoS 9│ [link 0 - non EMLSR] │ to B│ to B│ ─────────────────────────────────────────┴─────┴─────┴┬──┬───────────── │BA│ ├──┤ │BA│ └──┘ ┌──────┬──────┐ │QoS 10│QoS 11│ │ to A │ to A │ ┌───┐ ┌───┐ ├──────┼──────┤ ┌───┐ │MU │ │EML│ │QoS 10│QoS 11│ [link 1] │ACK│ │RTS│ │OM │ │ to B │ to B │ ────┬───┬┴───┴──┴───┴┬───┬┴───┴┬───┬──┴──────┴──────┴┬──┬───── │EML│ │CTS│ │ACK│ │BA│ │OM │ └───┘ └───┘ ├──┤ └───┘ │BA│ └──┘

[link 2] | power save mode ────────────────────────────────────────────────────────────────────────────

Definition at line 888 of file wifi-emlsr-test.cc.

References ns3::WifiPhy::CalculateTxDuration(), ns3::CtrlTriggerHeader::IsMuRts(), ns3::IsTrigger(), EmlsrOperationsTestBase::m_mainPhyId, EmlsrOperationsTestBase::m_nEmlsrStations, EmlsrOperationsTestBase::m_nNonEmlsrStations, EmlsrOperationsTestBase::m_staMacs, EmlsrOperationsTestBase::m_txPsdus, NS_TEST_ASSERT_MSG_EQ, NS_TEST_EXPECT_MSG_EQ, NS_TEST_EXPECT_MSG_GT, and NS_TEST_EXPECT_MSG_LT.