This objects implements the PHY state machine of the Wifi device. More...

#include <wifi-phy-state-helper.h>

Inheritance diagram for ns3::WifiPhyStateHelper:

Collaboration diagram for ns3::WifiPhyStateHelper:

Public Member Functions
	WifiPhyStateHelper ()

Time	GetDelayUntilIdle (void)
	Return the time before the state is back to IDLE. More...

Time	GetLastRxStartTime (void) const
	Return the time the last RX start. More...

enum WifiPhy::State	GetState (void)
	Return the current state of WifiPhy. More...

Time	GetStateDuration (void)
	Return the elapsed time of the current state. More...

bool	IsStateBusy (void)
	Check whether the current state is not IDLE. More...

bool	IsStateCcaBusy (void)
	Check whether the current state is CCA busy. More...

bool	IsStateIdle (void)
	Check whether the current state is IDLE. More...

bool	IsStateRx (void)
	Check whether the current state is RX. More...

bool	IsStateSwitching (void)
	Check whether the current state is SWITCHING. More...

bool	IsStateTx (void)
	Check whether the current state is TX. More...

void	RegisterListener (WifiPhyListener *listener)
	Register WifiPhyListener to this WifiPhyStateHelper. More...

void	SetReceiveErrorCallback (WifiPhy::RxErrorCallback callback)
	Set a callback for a failed reception. More...

void	SetReceiveOkCallback (WifiPhy::RxOkCallback callback)
	Set a callback for a successful reception. More...

void	SwitchFromRxEndError (Ptr< const Packet > packet, double snr)
	Switch from RX after the reception failed. More...

void	SwitchFromRxEndOk (Ptr< Packet > packet, double snr, WifiMode mode, enum WifiPreamble preamble)
	Switch from RX after the reception was successful. More...

void	SwitchMaybeToCcaBusy (Time duration)
	Switch to CCA busy. More...

void	SwitchToChannelSwitching (Time switchingDuration)
	Switch state to channel switching for the given duration. More...

void	SwitchToRx (Time rxDuration)
	Switch state to RX for the given duration. More...

void	SwitchToTx (Time txDuration, Ptr< const Packet > packet, WifiMode txMode, WifiPreamble preamble, uint8_t txPower)
	Switch state to TX for the given duration. More...

Public Member Functions inherited from ns3::Object
	Object ()

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

void	Dispose (void)
	Run the DoDispose methods of this object and all the objects aggregated to it. More...

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

template<typename T >
Ptr< T >	GetObject (void) const

template<typename T >
Ptr< T >	GetObject (TypeId tid) const

void	Initialize (void)
	This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...

uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...

void	Ref (void) const
	Increment the reference count. More...

void	Unref (void) const
	Decrement the reference count. More...

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...

void	GetAttribute (std::string name, AttributeValue &value) const

bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const

void	SetAttribute (std::string name, const AttributeValue &value)

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...

Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Public Attributes
TracedCallback< Time, Time, enum WifiPhy::State >	m_stateLogger

Private Types
typedef std::vector < WifiPhyListener * >	Listeners
	typedef for a list of WifiPhyListeners More...

Private Member Functions
void	DoSwitchFromRx (void)
	Switch the state from RX. More...

void	LogPreviousIdleAndCcaBusyStates (void)
	Log the ideal and CCA states. More...

void	NotifyMaybeCcaBusyStart (Time duration)
	Notify all WifiPhyListener that the CCA has started for the given duration. More...

void	NotifyRxEndError (void)
	Notify all WifiPhyListener that the reception was not successful. More...

void	NotifyRxEndOk (void)
	Notify all WifiPhyListener that the reception was successful. More...

void	NotifyRxStart (Time duration)
	Notify all WifiPhyListener that the reception has started for the given duration. More...

void	NotifySwitchingStart (Time duration)
	Notify all WifiPhyListener that we are switching channel with the given channel switching delay. More...

void	NotifyTxStart (Time duration)
	Notify all WifiPhyListener that the transmission has started for the given duration. More...

Private Attributes
Time	m_endCcaBusy

Time	m_endRx

Time	m_endSwitching

Time	m_endTx

Listeners	m_listeners

Time	m_previousStateChangeTime

WifiPhy::RxErrorCallback	m_rxErrorCallback

TracedCallback< Ptr< const Packet >, double >	m_rxErrorTrace

bool	m_rxing

WifiPhy::RxOkCallback	m_rxOkCallback

TracedCallback< Ptr< const Packet >, double, WifiMode, enum WifiPreamble >	m_rxOkTrace

Time	m_startCcaBusy

Time	m_startRx

Time	m_startSwitching

Time	m_startTx

TracedCallback< Ptr< const Packet >, WifiMode, WifiPreamble, uint8_t >	m_txTrace

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

virtual void	DoDispose (void)
	This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...

virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

virtual void	NotifyNewAggregate (void)
	This method is invoked whenever two sets of objects are aggregated together. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)

virtual void	NotifyConstructionCompleted (void)
	This method is invoked once all member attributes have been initialized. More...

Detailed Description

This objects implements the PHY state machine of the Wifi device.

Config Paths

ns3::WifiPhyStateHelper is accessible through the following paths with Config::Set and Config::Connect:

/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phy/$ns3::YansWifiPhy/State

No Attributes are defined for this type.

TraceSources

State: The state of the PHY layer
RxOk: A packet has been received successfully.
RxError: A packet has been received unsuccessfully.
Tx: Packet transmission is starting.

Definition at line 35 of file wifi-phy-state-helper.h.

Member Typedef Documentation

typedef std::vector<WifiPhyListener *> ns3::WifiPhyStateHelper::Listeners

private

typedef for a list of WifiPhyListeners

Definition at line 171 of file wifi-phy-state-helper.h.

Constructor & Destructor Documentation

ns3::WifiPhyStateHelper::WifiPhyStateHelper ( )

Definition at line 53 of file wifi-phy-state-helper.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::WifiPhyStateHelper::DoSwitchFromRx ( void )

private

Switch the state from RX.

Definition at line 393 of file wifi-phy-state-helper.cc.

References IsStateCcaBusy(), IsStateIdle(), IsStateRx(), m_previousStateChangeTime, m_rxing, m_startRx, m_stateLogger, ns3::Simulator::Now(), NS_ASSERT, and ns3::WifiPhy::RX.

Referenced by SwitchFromRxEndError(), and SwitchFromRxEndOk().

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Time ns3::WifiPhyStateHelper::GetDelayUntilIdle ( void )

Return the time before the state is back to IDLE.

Returns: the delay before the state is back to IDLE

Definition at line 124 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, GetState(), ns3::WifiPhy::IDLE, m_endCcaBusy, m_endRx, m_endSwitching, m_endTx, ns3::Max(), ns3::Simulator::Now(), NS_FATAL_ERROR, ns3::WifiPhy::RX, ns3::WifiPhy::SWITCHING, and ns3::WifiPhy::TX.

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Time ns3::WifiPhyStateHelper::GetLastRxStartTime ( void ) const

Return the time the last RX start.

Returns: the time the last RX start.

Definition at line 155 of file wifi-phy-state-helper.cc.

References m_startRx.

enum WifiPhy::State ns3::WifiPhyStateHelper::GetState ( void )

Return the current state of WifiPhy.

Returns: the current state of WifiPhy

Definition at line 161 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, ns3::WifiPhy::IDLE, m_endCcaBusy, m_endSwitching, m_endTx, m_rxing, ns3::Simulator::Now(), ns3::WifiPhy::RX, ns3::WifiPhy::SWITCHING, and ns3::WifiPhy::TX.

Referenced by GetDelayUntilIdle(), IsStateBusy(), IsStateCcaBusy(), IsStateIdle(), IsStateRx(), IsStateSwitching(), IsStateTx(), SwitchMaybeToCcaBusy(), SwitchToChannelSwitching(), SwitchToRx(), and SwitchToTx().

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Time ns3::WifiPhyStateHelper::GetStateDuration ( void )

Return the elapsed time of the current state.

Returns: the elapsed time of the current state

Definition at line 118 of file wifi-phy-state-helper.cc.

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

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TypeId ns3::WifiPhyStateHelper::GetTypeId ( void )

static

Definition at line 33 of file wifi-phy-state-helper.cc.

References m_rxErrorTrace, m_rxOkTrace, m_stateLogger, m_txTrace, ns3::MakeTraceSourceAccessor(), and ns3::TypeId::SetParent().

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bool ns3::WifiPhyStateHelper::IsStateBusy ( void )

Check whether the current state is not IDLE.

Returns: true if the current state is not IDLE, false otherwise

Definition at line 90 of file wifi-phy-state-helper.cc.

References GetState(), and ns3::WifiPhy::IDLE.

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bool ns3::WifiPhyStateHelper::IsStateCcaBusy ( void )

Check whether the current state is CCA busy.

Returns: true if the current state is CCA busy, false otherwise

Definition at line 95 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, and GetState().

Referenced by DoSwitchFromRx(), and SwitchToRx().

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bool ns3::WifiPhyStateHelper::IsStateIdle ( void )

Check whether the current state is IDLE.

Returns: true if the current state is IDLE, false otherwise

Definition at line 85 of file wifi-phy-state-helper.cc.

References GetState(), and ns3::WifiPhy::IDLE.

Referenced by DoSwitchFromRx(), and SwitchToRx().

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bool ns3::WifiPhyStateHelper::IsStateRx ( void )

Check whether the current state is RX.

Returns: true if the current state is RX, false otherwise

Definition at line 100 of file wifi-phy-state-helper.cc.

References GetState(), and ns3::WifiPhy::RX.

Referenced by DoSwitchFromRx(), and SwitchToRx().

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bool ns3::WifiPhyStateHelper::IsStateSwitching ( void )

Check whether the current state is SWITCHING.

Returns: true if the current state is SWITCHING, false otherwise

Definition at line 110 of file wifi-phy-state-helper.cc.

References GetState(), and ns3::WifiPhy::SWITCHING.

Referenced by SwitchToChannelSwitching().

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bool ns3::WifiPhyStateHelper::IsStateTx ( void )

Check whether the current state is TX.

Returns: true if the current state is TX, false otherwise

Definition at line 105 of file wifi-phy-state-helper.cc.

References GetState(), and ns3::WifiPhy::TX.

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void ns3::WifiPhyStateHelper::LogPreviousIdleAndCcaBusyStates ( void )

private

Log the ideal and CCA states.

Definition at line 236 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, ns3::WifiPhy::IDLE, m_endCcaBusy, m_endRx, m_endSwitching, m_endTx, m_startCcaBusy, m_stateLogger, ns3::Max(), ns3::Simulator::Now(), and NS_ASSERT.

Referenced by SwitchMaybeToCcaBusy(), SwitchToChannelSwitching(), SwitchToRx(), and SwitchToTx().

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void ns3::WifiPhyStateHelper::NotifyMaybeCcaBusyStart ( Time duration )

private

Notify all WifiPhyListener that the CCA has started for the given duration.

Parameters

duration the duration of the CCA state

Definition at line 219 of file wifi-phy-state-helper.cc.

References m_listeners.

Referenced by SwitchMaybeToCcaBusy().

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void ns3::WifiPhyStateHelper::NotifyRxEndError ( void )

private

Notify all WifiPhyListener that the reception was not successful.

Definition at line 211 of file wifi-phy-state-helper.cc.

References m_listeners.

Referenced by SwitchFromRxEndError().

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void ns3::WifiPhyStateHelper::NotifyRxEndOk ( void )

private

Notify all WifiPhyListener that the reception was successful.

Definition at line 203 of file wifi-phy-state-helper.cc.

References m_listeners.

Referenced by SwitchFromRxEndOk().

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void ns3::WifiPhyStateHelper::NotifyRxStart ( Time duration )

private

Notify all WifiPhyListener that the reception has started for the given duration.

Parameters

duration the duration of the reception

Definition at line 195 of file wifi-phy-state-helper.cc.

References m_listeners.

Referenced by SwitchToRx().

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void ns3::WifiPhyStateHelper::NotifySwitchingStart ( Time duration )

private

Notify all WifiPhyListener that we are switching channel with the given channel switching delay.

Parameters

duration the delay to switch the channel

Definition at line 227 of file wifi-phy-state-helper.cc.

References m_listeners.

Referenced by SwitchToChannelSwitching().

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void ns3::WifiPhyStateHelper::NotifyTxStart ( Time duration )

private

Notify all WifiPhyListener that the transmission has started for the given duration.

Parameters

duration the duration of the transmission

Definition at line 187 of file wifi-phy-state-helper.cc.

References m_listeners.

Referenced by SwitchToTx().

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void ns3::WifiPhyStateHelper::RegisterListener ( WifiPhyListener * listener )

Register WifiPhyListener to this WifiPhyStateHelper.

Parameters

listener

Definition at line 79 of file wifi-phy-state-helper.cc.

References m_listeners.

void ns3::WifiPhyStateHelper::SetReceiveErrorCallback ( WifiPhy::RxErrorCallback callback )

Set a callback for a failed reception.

Parameters

callback

Definition at line 74 of file wifi-phy-state-helper.cc.

References m_rxErrorCallback.

void ns3::WifiPhyStateHelper::SetReceiveOkCallback ( WifiPhy::RxOkCallback callback )

Set a callback for a successful reception.

Parameters

callback

Definition at line 69 of file wifi-phy-state-helper.cc.

References m_rxOkCallback.

void ns3::WifiPhyStateHelper::SwitchFromRxEndError	(	Ptr< const Packet >	packet,
		double	snr
	)

Switch from RX after the reception failed.

Parameters

packet	the packet that we failed to received
snr	the SNR of the received packet

Definition at line 381 of file wifi-phy-state-helper.cc.

References DoSwitchFromRx(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::IsNull(), m_rxErrorCallback, m_rxErrorTrace, and NotifyRxEndError().

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void ns3::WifiPhyStateHelper::SwitchFromRxEndOk	(	Ptr< Packet >	packet,
		double	snr,
		WifiMode	mode,
		enum WifiPreamble	preamble
	)

Switch from RX after the reception was successful.

Parameters

packet	the successfully received packet
snr	the SNR of the received packet
mode	the transmission mode of the packet
preamble	the preamble of the received packet

Definition at line 369 of file wifi-phy-state-helper.cc.

References DoSwitchFromRx(), ns3::Callback< R, T1, T2, T3, T4, T5, T6, T7, T8, T9 >::IsNull(), m_rxOkCallback, m_rxOkTrace, and NotifyRxEndOk().

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void ns3::WifiPhyStateHelper::SwitchMaybeToCcaBusy ( Time duration )

Switch to CCA busy.

Parameters

duration the duration of CCA busy state

Definition at line 406 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, GetState(), ns3::WifiPhy::IDLE, LogPreviousIdleAndCcaBusyStates(), m_endCcaBusy, m_startCcaBusy, NotifyMaybeCcaBusyStart(), ns3::Simulator::Now(), ns3::WifiPhy::RX, ns3::WifiPhy::SWITCHING, and ns3::WifiPhy::TX.

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void ns3::WifiPhyStateHelper::SwitchToChannelSwitching ( Time switchingDuration )

Switch state to channel switching for the given duration.

Parameters

switchingDuration the duration of required to switch the channel

Definition at line 325 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, GetState(), ns3::WifiPhy::IDLE, IsStateSwitching(), LogPreviousIdleAndCcaBusyStates(), m_endCcaBusy, m_endRx, m_endSwitching, m_endTx, m_previousStateChangeTime, m_rxing, m_startCcaBusy, m_startRx, m_startSwitching, m_stateLogger, ns3::Max(), NotifySwitchingStart(), ns3::Simulator::Now(), NS_ASSERT, NS_FATAL_ERROR, ns3::WifiPhy::RX, ns3::WifiPhy::SWITCHING, and ns3::WifiPhy::TX.

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void ns3::WifiPhyStateHelper::SwitchToRx ( Time rxDuration )

Switch state to RX for the given duration.

Parameters

rxDuration the duration of the RX

Definition at line 293 of file wifi-phy-state-helper.cc.

References ns3::WifiPhy::CCA_BUSY, GetState(), ns3::WifiPhy::IDLE, IsStateCcaBusy(), IsStateIdle(), IsStateRx(), LogPreviousIdleAndCcaBusyStates(), m_endRx, m_endSwitching, m_endTx, m_previousStateChangeTime, m_rxing, m_startCcaBusy, m_startRx, m_stateLogger, ns3::Max(), NotifyRxStart(), ns3::Simulator::Now(), NS_ASSERT, NS_FATAL_ERROR, ns3::WifiPhy::RX, ns3::WifiPhy::SWITCHING, and ns3::WifiPhy::TX.

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void ns3::WifiPhyStateHelper::SwitchToTx	(	Time	txDuration,
		Ptr< const Packet >	packet,
		WifiMode	txMode,
		WifiPreamble	preamble,
		uint8_t	txPower
	)

Switch state to TX for the given duration.

Parameters

txDuration	the duration of the TX
packet	the packet
txMode	the transmission mode of the packet
preamble	the preamble of the packet
txPower	the transmission power