This class is used to handle the timer that a station starts when transmitting a frame that solicits a response. More...

#include "wifi-tx-timer.h"

Collaboration diagram for ns3::WifiTxTimer:

Public Types
typedef Callback< void, uint8_t, Ptr< const WifiMpdu >, const WifiTxVector & >	MpduResponseTimeout
	MPDU response timeout callback typedef.

typedef Callback< void, uint8_t, WifiPsduMap , const std::set< Mac48Address > , std::size_t >	PsduMapResponseTimeout
	PSDU map response timeout callback typedef.

typedef Callback< void, uint8_t, Ptr< const WifiPsdu >, const WifiTxVector & >	PsduResponseTimeout
	PSDU response timeout callback typedef.

enum	Reason : uint8_t { NOT_RUNNING = 0 , WAIT_CTS , WAIT_NORMAL_ACK , WAIT_BLOCK_ACK , WAIT_CTS_AFTER_MU_RTS , WAIT_NORMAL_ACK_AFTER_DL_MU_PPDU , WAIT_BLOCK_ACKS_IN_TB_PPDU , WAIT_TB_PPDU_AFTER_BASIC_TF , WAIT_QOS_NULL_AFTER_BSRP_TF , WAIT_BLOCK_ACK_AFTER_TB_PPDU }
	The reason why the timer was started. More...

Public Member Functions
	WifiTxTimer ()
	Default constructor.

virtual	~WifiTxTimer ()

void	Cancel ()
	Cancel the timer.

Time	GetDelayLeft () const
	Get the remaining time until the timer will expire.

Reason	GetReason () const
	Get the reason why the timer was started.

std::string	GetReasonString (Reason reason) const
	Get a string associated with the given reason.

const std::set< Mac48Address > &	GetStasExpectedToRespond () const

void	GotResponseFrom (const Mac48Address &from)
	Notify that a response was got from the given station.

bool	IsRunning () const
	Return true if the timer is running.

void	Reschedule (const Time &delay)
	Reschedule the timer to time out the given amount of time from the moment this function is called.

template<typename MEM , typename OBJ , typename... Args>
void	Set (Reason reason, const Time &delay, const std::set< Mac48Address > &from, MEM mem_ptr, OBJ obj, Args... args)
	This method is called when a frame soliciting a response is transmitted.

void	SetMpduResponseTimeoutCallback (MpduResponseTimeout callback) const
	Set the callback to invoke when the TX timer following the transmission of an MPDU expires.

void	SetPsduMapResponseTimeoutCallback (PsduMapResponseTimeout callback) const
	Set the callback to invoke when the TX timer following the transmission of a PSDU map expires.

void	SetPsduResponseTimeoutCallback (PsduResponseTimeout callback) const
	Set the callback to invoke when the TX timer following the transmission of a PSDU expires.

Private Member Functions
void	Expire ()
	Internal callback invoked when the timer expires.

void	FeedTraceSource (Ptr< WifiMpdu > item, WifiTxVector txVector)
	This method is called when the timer expires to feed the MPDU response timeout callback.

void	FeedTraceSource (Ptr< WifiPsdu > psdu, WifiTxVector txVector)
	This method is called when the timer expires to feed the PSDU response timeout callback.

void	FeedTraceSource (WifiPsduMap *psduMap, std::size_t nTotalStations)
	This method is called when the timer expires to feed the PSDU map response timeout callback.

template<typename MEM , typename OBJ , typename... Args>
void	Timeout (MEM mem_ptr, OBJ obj, Args... args)
	This method is called when the timer expires.

Private Attributes
Time	m_end
	the absolute time when the timer will expire

Ptr< EventImpl >	m_impl
	the timer implementation, which contains the bound callback function and arguments

MpduResponseTimeout	m_mpduResponseTimeoutCallback
	the MPDU response timeout callback

PsduMapResponseTimeout	m_psduMapResponseTimeoutCallback
	the PSDU map response timeout callback

PsduResponseTimeout	m_psduResponseTimeoutCallback
	the PSDU response timeout callback

Reason	m_reason
	the reason why the timer was started

std::set< Mac48Address >	m_staExpectResponseFrom
	the set of stations we expect to receive a response from

EventId	m_timeoutEvent
	the timeout event after a missing response

Detailed Description

This class is used to handle the timer that a station starts when transmitting a frame that solicits a response.

The timeout can be rescheduled (multiple times) when the RXSTART.indication is received from the PHY.

Definition at line 37 of file wifi-tx-timer.h.

Member Typedef Documentation

◆ MpduResponseTimeout

typedef Callback<void, uint8_t, Ptr<const WifiMpdu>, const WifiTxVector&> ns3::WifiTxTimer::MpduResponseTimeout

MPDU response timeout callback typedef.

Definition at line 145 of file wifi-tx-timer.h.

◆ PsduMapResponseTimeout

typedef Callback<void, uint8_t, WifiPsduMap*, const std::set<Mac48Address>*, std::size_t> ns3::WifiTxTimer::PsduMapResponseTimeout

PSDU map response timeout callback typedef.

Definition at line 156 of file wifi-tx-timer.h.

◆ PsduResponseTimeout

typedef Callback<void, uint8_t, Ptr<const WifiPsdu>, const WifiTxVector&> ns3::WifiTxTimer::PsduResponseTimeout

PSDU response timeout callback typedef.

Definition at line 150 of file wifi-tx-timer.h.

Member Enumeration Documentation

◆ Reason

enum ns3::WifiTxTimer::Reason : uint8_t

The reason why the timer was started.

Enumerator
NOT_RUNNING
WAIT_CTS
WAIT_NORMAL_ACK
WAIT_BLOCK_ACK
WAIT_CTS_AFTER_MU_RTS
WAIT_NORMAL_ACK_AFTER_DL_MU_PPDU
WAIT_BLOCK_ACKS_IN_TB_PPDU
WAIT_TB_PPDU_AFTER_BASIC_TF
WAIT_QOS_NULL_AFTER_BSRP_TF
WAIT_BLOCK_ACK_AFTER_TB_PPDU

Definition at line 44 of file wifi-tx-timer.h.

Constructor & Destructor Documentation

◆ WifiTxTimer()

ns3::WifiTxTimer::WifiTxTimer ( )

Default constructor.

Definition at line 22 of file wifi-tx-timer.cc.

◆ ~WifiTxTimer()

ns3::WifiTxTimer::~WifiTxTimer ( )

virtual

Definition at line 30 of file wifi-tx-timer.cc.

References ns3::EventId::Cancel(), m_impl, and m_timeoutEvent.

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Member Function Documentation

◆ Cancel()

void ns3::WifiTxTimer::Cancel ( )

Cancel the timer.

Definition at line 116 of file wifi-tx-timer.cc.

References ns3::EventId::Cancel(), GetReasonString(), m_impl, m_reason, m_staExpectResponseFrom, m_timeoutEvent, and NS_LOG_FUNCTION.

Referenced by ns3::FrameExchangeManager::ReceivedNormalAck(), ns3::FrameExchangeManager::ReceiveMpdu(), ns3::HtFrameExchangeManager::ReceiveMpdu(), ns3::FrameExchangeManager::Reset(), ns3::FrameExchangeManager::StartTransmission(), and ns3::QosFrameExchangeManager::StartTransmission().

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◆ Expire()

void ns3::WifiTxTimer::Expire ( )

private

Internal callback invoked when the timer expires.

Definition at line 61 of file wifi-tx-timer.cc.

References Expire(), m_end, m_impl, m_timeoutEvent, ns3::Simulator::Now(), NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

Referenced by Expire(), Reschedule(), and Set().

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◆ FeedTraceSource() [1/3]

void ns3::WifiTxTimer::FeedTraceSource	(	Ptr< WifiMpdu >	item,
		WifiTxVector	txVector )

private

This method is called when the timer expires to feed the MPDU response timeout callback.

Parameters

item	the MPDU followed by no response
txVector	the TXVECTOR used to transmit the MPDU

Definition at line 149 of file wifi-tx-timer.cc.

References ns3::Callback< R, UArgs >::IsNull(), m_mpduResponseTimeoutCallback, and m_reason.

Referenced by Timeout().

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◆ FeedTraceSource() [2/3]

void ns3::WifiTxTimer::FeedTraceSource	(	Ptr< WifiPsdu >	psdu,
		WifiTxVector	txVector )

private

This method is called when the timer expires to feed the PSDU response timeout callback.

Parameters

psdu	the PSDU followed by no response
txVector	the TXVECTOR used to transmit the PSDU

Definition at line 164 of file wifi-tx-timer.cc.

References ns3::Callback< R, UArgs >::IsNull(), m_psduResponseTimeoutCallback, and m_reason.

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◆ FeedTraceSource() [3/3]

void ns3::WifiTxTimer::FeedTraceSource	(	WifiPsduMap *	psduMap,
		std::size_t	nTotalStations )

private

This method is called when the timer expires to feed the PSDU map response timeout callback.

Parameters

psduMap	the PSDU map for which not all responses were received
nTotalStations	the total number of expected responses

Definition at line 179 of file wifi-tx-timer.cc.

References ns3::Callback< R, UArgs >::IsNull(), m_psduMapResponseTimeoutCallback, m_reason, and m_staExpectResponseFrom.

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◆ GetDelayLeft()

Time ns3::WifiTxTimer::GetDelayLeft ( ) const

Get the remaining time until the timer will expire.

Returns: the remaining time until the timer will expire. If the timer is not running, this method returns zero.

Definition at line 137 of file wifi-tx-timer.cc.

References m_end, and ns3::Simulator::Now().

Referenced by ns3::EhtFrameExchangeManager::UpdateTxopEndOnTxStart().

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◆ GetReason()

WifiTxTimer::Reason ns3::WifiTxTimer::GetReason ( ) const

Get the reason why the timer was started.

Call this method only if the timer is running

Returns: the reason why the timer was started

Definition at line 77 of file wifi-tx-timer.cc.

References IsRunning(), m_reason, and NS_ASSERT.

Referenced by ns3::FrameExchangeManager::ReceiveMpdu(), and ns3::HtFrameExchangeManager::ReceiveMpdu().

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◆ GetReasonString()

std::string ns3::WifiTxTimer::GetReasonString ( Reason reason ) const

Get a string associated with the given reason.

Parameters

reason the given reason

Returns: a string associated with the given reason

Definition at line 84 of file wifi-tx-timer.cc.

References CASE_REASON, NOT_RUNNING, and NS_ABORT_MSG.

Referenced by Cancel(), and Reschedule().

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◆ GetStasExpectedToRespond()

const std::set< Mac48Address > & ns3::WifiTxTimer::GetStasExpectedToRespond ( ) const

Returns: the set of stations that are still expected to respond

Definition at line 131 of file wifi-tx-timer.cc.

References m_staExpectResponseFrom.

Referenced by ns3::EhtFrameExchangeManager::PreProcessFrame(), ns3::QosFrameExchangeManager::TransmissionFailed(), and ns3::HeFrameExchangeManager::TransmissionSucceeded().

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◆ GotResponseFrom()

void ns3::WifiTxTimer::GotResponseFrom ( const Mac48Address & from )

Notify that a response was got from the given station.

Parameters

from	the MAC address of the given station

Definition at line 125 of file wifi-tx-timer.cc.

References m_staExpectResponseFrom.

◆ IsRunning()

bool ns3::WifiTxTimer::IsRunning ( ) const

Return true if the timer is running.

Returns: true if the timer is running

Definition at line 110 of file wifi-tx-timer.cc.

References ns3::EventId::IsPending(), and m_timeoutEvent.

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◆ Reschedule()

void ns3::WifiTxTimer::Reschedule ( const Time & delay )

Reschedule the timer to time out the given amount of time from the moment this function is called.

Note that nothing is done if the timer is not running.

Parameters

delay the time to the expiration of the timer

Definition at line 37 of file wifi-tx-timer.cc.

References ns3::Time::As(), ns3::EventId::Cancel(), Expire(), GetReasonString(), ns3::EventId::IsPending(), m_end, m_reason, m_timeoutEvent, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Simulator::Schedule(), and ns3::Time::US.

Referenced by ns3::FrameExchangeManager::NotifySwitchingStartNow(), and ns3::FrameExchangeManager::RxStartIndication().

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◆ Set()

template<typename MEM , typename OBJ , typename... Args>

void ns3::WifiTxTimer::Set	(	Reason	reason,
		const Time &	delay,
		const std::set< Mac48Address > &	from,
		MEM	mem_ptr,
		OBJ	obj,
		Args...	args )

This method is called when a frame soliciting a response is transmitted.

This method starts a timer of the given duration and schedules a call to the given method in case the timer expires.

Template Parameters

MEM	[deduced] Class method function signature type
OBJ	[deduced] Class type of the object
Args	[deduced] Type template parameter pack

Parameters

reason	the reason why the timer was started
delay	the time to the expiration of the timer
from	the set of stations we expect to receive a response from
mem_ptr	Member method pointer to invoke
obj	The object on which to invoke the member method
args	The arguments to pass to the invoked method

Definition at line 257 of file wifi-tx-timer.h.

References Expire(), m_end, m_impl, m_reason, m_staExpectResponseFrom, m_timeoutEvent, ns3::MakeEvent(), ns3::Simulator::Now(), ns3::Simulator::Schedule(), and Timeout().

Referenced by ns3::FrameExchangeManager::SendMpdu(), ns3::HeFrameExchangeManager::SendMuRts(), ns3::HtFrameExchangeManager::SendPsdu(), ns3::HeFrameExchangeManager::SendPsduMap(), and ns3::FrameExchangeManager::SendRts().

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◆ SetMpduResponseTimeoutCallback()

void ns3::WifiTxTimer::SetMpduResponseTimeoutCallback ( MpduResponseTimeout callback ) const

Set the callback to invoke when the TX timer following the transmission of an MPDU expires.

Parameters

callback the callback to invoke when the TX timer following the transmission of an MPDU expires

Definition at line 143 of file wifi-tx-timer.cc.

References m_mpduResponseTimeoutCallback.

◆ SetPsduMapResponseTimeoutCallback()

void ns3::WifiTxTimer::SetPsduMapResponseTimeoutCallback ( PsduMapResponseTimeout callback ) const

Set the callback to invoke when the TX timer following the transmission of a PSDU map expires.

Parameters

callback the callback to invoke when the TX timer following the transmission of a PSDU map expires

Definition at line 173 of file wifi-tx-timer.cc.

References m_psduMapResponseTimeoutCallback.

◆ SetPsduResponseTimeoutCallback()

void ns3::WifiTxTimer::SetPsduResponseTimeoutCallback ( PsduResponseTimeout callback ) const

Set the callback to invoke when the TX timer following the transmission of a PSDU expires.

Parameters

callback the callback to invoke when the TX timer following the transmission of a PSDU expires

Definition at line 158 of file wifi-tx-timer.cc.

References m_psduResponseTimeoutCallback.

◆ Timeout()

template<typename MEM , typename OBJ , typename... Args>

void ns3::WifiTxTimer::Timeout	(	MEM	mem_ptr,
		OBJ	obj,
		Args...	args )

private

This method is called when the timer expires.

It invokes the callbacks and the method set by the user.

Template Parameters

MEM	[deduced] Class method function signature type
OBJ	[deduced] Class type of the object
Args	[deduced] Type template parameter pack

Parameters

mem_ptr	Member method pointer to invoke
obj	The object on which to invoke the member method
args	The arguments to pass to the invoked method

Definition at line 282 of file wifi-tx-timer.h.

References FeedTraceSource().

Referenced by Set().

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Member Data Documentation

◆ m_end

Time ns3::WifiTxTimer::m_end

private

the absolute time when the timer will expire

Definition at line 234 of file wifi-tx-timer.h.

Referenced by Expire(), GetDelayLeft(), Reschedule(), and Set().

◆ m_impl

Ptr<EventImpl> ns3::WifiTxTimer::m_impl

private

the timer implementation, which contains the bound callback function and arguments

Definition at line 232 of file wifi-tx-timer.h.

Referenced by ~WifiTxTimer(), Cancel(), Expire(), and Set().

◆ m_mpduResponseTimeoutCallback

MpduResponseTimeout ns3::WifiTxTimer::m_mpduResponseTimeoutCallback

mutableprivate

the MPDU response timeout callback

Definition at line 239 of file wifi-tx-timer.h.

Referenced by FeedTraceSource(), and SetMpduResponseTimeoutCallback().

◆ m_psduMapResponseTimeoutCallback

PsduMapResponseTimeout ns3::WifiTxTimer::m_psduMapResponseTimeoutCallback

mutableprivate

the PSDU map response timeout callback

Definition at line 243 of file wifi-tx-timer.h.

Referenced by FeedTraceSource(), and SetPsduMapResponseTimeoutCallback().

◆ m_psduResponseTimeoutCallback

PsduResponseTimeout ns3::WifiTxTimer::m_psduResponseTimeoutCallback

mutableprivate

the PSDU response timeout callback

Definition at line 241 of file wifi-tx-timer.h.

Referenced by FeedTraceSource(), and SetPsduResponseTimeoutCallback().

◆ m_reason

Reason ns3::WifiTxTimer::m_reason

private

the reason why the timer was started

Definition at line 231 of file wifi-tx-timer.h.

Referenced by Cancel(), FeedTraceSource(), FeedTraceSource(), FeedTraceSource(), GetReason(), Reschedule(), and Set().

◆ m_staExpectResponseFrom

std::set<Mac48Address> ns3::WifiTxTimer::m_staExpectResponseFrom

private

the set of stations we expect to receive a response from

Definition at line 236 of file wifi-tx-timer.h.

Referenced by Cancel(), FeedTraceSource(), GetStasExpectedToRespond(), GotResponseFrom(), and Set().

◆ m_timeoutEvent

EventId ns3::WifiTxTimer::m_timeoutEvent

private

the timeout event after a missing response

Definition at line 230 of file wifi-tx-timer.h.

Referenced by ~WifiTxTimer(), Cancel(), Expire(), IsRunning(), Reschedule(), and Set().

The documentation for this class was generated from the following files:

src/wifi/model/wifi-tx-timer.h
src/wifi/model/wifi-tx-timer.cc

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ MpduResponseTimeout

◆ PsduMapResponseTimeout

◆ PsduResponseTimeout

Member Enumeration Documentation

◆ Reason

Constructor & Destructor Documentation

◆ WifiTxTimer()

◆ ~WifiTxTimer()

Member Function Documentation

◆ Cancel()

◆ Expire()

◆ FeedTraceSource() [1/3]

◆ FeedTraceSource() [2/3]

◆ FeedTraceSource() [3/3]

◆ GetDelayLeft()

◆ GetReason()

◆ GetReasonString()

◆ GetStasExpectedToRespond()

◆ GotResponseFrom()

◆ IsRunning()

◆ Reschedule()

◆ Set()

◆ SetMpduResponseTimeoutCallback()

◆ SetPsduMapResponseTimeoutCallback()

◆ SetPsduResponseTimeoutCallback()

◆ Timeout()

Member Data Documentation

◆ m_end

◆ m_impl

◆ m_mpduResponseTimeoutCallback

◆ m_psduMapResponseTimeoutCallback

◆ m_psduResponseTimeoutCallback

◆ m_reason

◆ m_staExpectResponseFrom

◆ m_timeoutEvent