handle RTS/CTS/DATA/ACK transactions. More...

#include "mac-low.h"

Inheritance diagram for ns3::MacLow:

Collaboration diagram for ns3::MacLow:

Classes
struct	Item
	A struct for packet, Wifi header, and timestamp.item structure. More...

Public Types
typedef Callback< void, Ptr< Packet >, const WifiMacHeader * >	MacLowRxCallback
	typedef for a callback for MacLowRx More...

Public Member Functions
	MacLow ()

virtual	~MacLow ()

Ptr< Packet >	AggregateToAmpdu (Ptr< const Packet > packet, const WifiMacHeader hdr)

Time	CalculateOverallTxFragmentTime (Ptr< const Packet > packet, const WifiMacHeader *hdr, const MacLowTransmissionParameters &params, uint32_t fragmentSize) const

Time	CalculateOverallTxTime (Ptr< const Packet > packet, const WifiMacHeader *hdr, const MacLowTransmissionParameters &params) const

Time	CalculateTransmissionTime (Ptr< const Packet > packet, const WifiMacHeader *hdr, const MacLowTransmissionParameters &parameters) const

void	CreateBlockAckAgreement (const MgtAddBaResponseHeader *respHdr, Mac48Address originator, uint16_t startingSeq)

void	DeaggregateAmpduAndReceive (Ptr< Packet > aggregatedPacket, double rxSnr, WifiTxVector txVector)

void	DestroyBlockAckAgreement (Mac48Address originator, uint8_t tid)

void	FlushAggregateQueue (uint8_t tid)
	This function is called to flush the aggregate queue, which is used for A-MPDU. More...

Time	GetAckTimeout (void) const
	Return ACK timeout of this MacLow. More...

Mac48Address	GetAddress (void) const
	Return the MAC address of this MacLow. More...

Time	GetBasicBlockAckTimeout () const
	Return Basic Block ACK timeout of this MacLow. More...

Mac48Address	GetBssid (void) const
	Return the Basic Service Set Identification. More...

Time	GetCompressedBlockAckTimeout () const
	Return Compressed Block ACK timeout of this MacLow. More...

Time	GetCtsTimeout (void) const
	Return CTS timeout of this MacLow. More...

bool	GetCtsToSelfSupported () const
	Return whether CTS-to-self capability is supported. More...

virtual WifiTxVector	GetDataTxVector (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
	Return a TXVECTOR for the DATA frame given the destination. More...

Ptr< WifiPhy >	GetPhy (void) const

Time	GetPifs (void) const
	Return PCF Interframe Space (PIFS) of this MacLow. More...

Time	GetRifs (void) const
	Return Reduced Interframe Space (RIFS) of this MacLow. More...

Time	GetSifs (void) const
	Return Short Interframe Space (SIFS) of this MacLow. More...

Time	GetSlotTime (void) const
	Return slot duration of this MacLow. More...

bool	IsPromisc (void) const
	Check if MacLow is operating in promiscuous mode. More...

void	NotifySleepNow (void)
	This method is typically invoked by the PhyMacLowListener to notify the MAC layer that the device has been put into sleep mode. More...

void	NotifySwitchingStartNow (Time duration)

void	ReceiveError (Ptr< Packet > packet, double rxSnr)

void	ReceiveOk (Ptr< Packet > packet, double rxSnr, WifiTxVector txVector, bool ampduSubframe)

void	RegisterDcf (Ptr< DcfManager > dcf)

void	RegisterEdcaForAc (AcIndex ac, Ptr< EdcaTxopN > edca)

void	ResetPhy (void)
	Remove WifiPhy associated with this MacLow. More...

void	SetAckTimeout (Time ackTimeout)
	Set ACK timeout of this MacLow. More...

void	SetAddress (Mac48Address ad)
	Set MAC address of this MacLow. More...

void	SetBasicBlockAckTimeout (Time blockAckTimeout)
	Set Basic Block ACK timeout of this MacLow. More...

void	SetBssid (Mac48Address ad)
	Set the Basic Service Set Identification. More...

void	SetCompressedBlockAckTimeout (Time blockAckTimeout)
	Set Compressed Block ACK timeout of this MacLow. More...

void	SetCtsTimeout (Time ctsTimeout)
	Set CTS timeout of this MacLow. More...

void	SetCtsToSelfSupported (bool enable)
	Enable or disable CTS-to-self capability. More...

void	SetPhy (const Ptr< WifiPhy > phy)
	Set up WifiPhy associated with this MacLow. More...

void	SetPifs (Time pifs)
	Set PCF Interframe Space (PIFS) of this MacLow. More...

void	SetPromisc (void)
	Enable promiscuous mode. More...

void	SetRifs (Time rifs)
	Set Reduced Interframe Space (RIFS) of this MacLow. More...

void	SetRxCallback (Callback< void, Ptr< Packet >, const WifiMacHeader * > callback)

void	SetSifs (Time sifs)
	Set Short Interframe Space (SIFS) of this MacLow. More...

void	SetSlotTime (Time slotTime)
	Set slot duration of this MacLow. More...

void	SetWifiRemoteStationManager (const Ptr< WifiRemoteStationManager > manager)
	Set up WifiRemoteStationManager associated with this MacLow. More...

virtual void	StartTransmission (Ptr< const Packet > packet, const WifiMacHeader *hdr, MacLowTransmissionParameters parameters, Ptr< DcaTxop > dca)

bool	StopMpduAggregation (Ptr< const Packet > peekedPacket, WifiMacHeader peekedHdr, Ptr< Packet > aggregatedPacket, uint16_t size) const

Public Member Functions inherited from ns3::Object
	Object ()
	Constructor. More...

virtual	~Object ()
	Destructor. More...

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together. More...

void	Dispose (void)
	Dispose of this Object. More...

AggregateIterator	GetAggregateIterator (void) const
	Get an iterator to the Objects aggregated to this one. More...

virtual TypeId	GetInstanceTypeId (void) const
	Get the most derived TypeId for this Object. More...

template<typename T >
Ptr< T >	GetObject (void) const
	Get a pointer to the requested aggregated Object. More...

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId. More...

void	Initialize (void)
	Invoke DoInitialize on all Objects aggregated to this one. More...

bool	IsInitialized (void) const
	Check if the object has been initialized. More...

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Default 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 operator. 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
	Get the value of an attribute, raising fatal errors if unsuccessful. More...

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising erros. More...

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful. More...

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors. More...

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context. More...

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context. More...

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context. More...

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context. More...

Static Public Member Functions
static TypeId	GetTypeId (void)
	Register this type. More...

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

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

Private Types
typedef std::pair< Mac48Address, uint8_t >	AgreementKey
	agreement key typedef More...

typedef std::map< AgreementKey, AgreementValue >	Agreements
	agreements More...

typedef std::map< AgreementKey, AgreementValue >::iterator	AgreementsI
	agreements iterator More...

typedef std::pair< BlockAckAgreement, std::list< BufferedPacket > >	AgreementValue
	agreement value typedef More...

typedef std::map< AgreementKey, BlockAckCache >	BlockAckCaches
	block ack caches typedef More...

typedef std::map< AgreementKey, BlockAckCache >::iterator	BlockAckCachesI
	block ack caches iterator typedef More...

typedef std::pair< Ptr< Packet >, WifiMacHeader >	BufferedPacket
	buffered packet typedef More...

typedef std::list< BufferedPacket >::iterator	BufferedPacketI
	buffered packet iterator typedef More...

typedef std::vector< Ptr< DcfManager > >	DcfManagers
	typedef for a list of DcfManager. More...

typedef std::vector< Ptr< DcfManager > >::const_iterator	DcfManagersCI
	typedef for an iterator for a list of DcfManager. More...

typedef struct Item	Item

typedef std::map< AcIndex, Ptr< EdcaTxopN > >	QueueEdcas
	EDCA queues typedef. More...

Private Member Functions
void	BlockAckTimeout (void)
	Event handler when block ACK timeout occurs. More...

void	CancelAllEvents (void)
	Cancel all scheduled events. More...

void	CtsTimeout (void)
	Event handler when CTS timeout occurs. More...

void	DoDispose (void)
	Destructor implementation. More...

void	DoNavResetNow (Time duration)
	Reset NAV with the given duration. More...

bool	DoNavStartNow (Time duration)
	Start NAV with the given duration. More...

void	EndTxNoAck (void)
	A transmission that does not require an ACK has completed. More...

void	FastAckFailedTimeout (void)
	Event handler when fast ACK timeout occurs (busy). More...

void	FastAckTimeout (void)
	Event handler when fast ACK timeout occurs (idle). More...

void	ForwardDown (Ptr< const Packet > packet, const WifiMacHeader *hdr, WifiTxVector txVector)
	Forward the packet down to WifiPhy for transmission. More...

Time	GetAckDuration (WifiTxVector ackTxVector) const
	Return the time required to transmit the ACK (including preamble and FCS). More...

Time	GetAckDuration (Mac48Address to, WifiTxVector dataTxVector) const
	Return the time required to transmit the ACK to the specified address given the TXVECTOR of the DATA (including preamble and FCS). More...

WifiTxVector	GetAckTxVector (Mac48Address to, WifiMode dataTxMode) const
	Return a TXVECTOR for the ACK frame given the destination and the mode of the DATA used by the sender. More...

WifiTxVector	GetAckTxVectorForData (Mac48Address to, WifiMode dataTxMode) const
	Return a TXVECTOR for the Block ACK frame given the destination and the mode of the DATA used by the sender. More...

Time	GetBlockAckDuration (Mac48Address to, WifiTxVector blockAckReqTxVector, BlockAckType type) const
	Return the time required to transmit the Block ACK to the specified address given the TXVECTOR of the BAR (including preamble and FCS). More...

WifiTxVector	GetBlockAckTxVector (Mac48Address to, WifiMode dataTxMode) const
	Return a TXVECTOR for the Block ACK frame given the destination and the mode of the DATA used by the sender. More...

Time	GetCtsDuration (WifiTxVector ctsTxVector) const
	Return the time required to transmit the CTS (including preamble and FCS). More...

Time	GetCtsDuration (Mac48Address to, WifiTxVector rtsTxVector) const
	Return the time required to transmit the CTS to the specified address given the TXVECTOR of the RTS (including preamble and FCS). More...

WifiTxVector	GetCtsToSelfTxVector (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
	Return a TXVECTOR for the CTS-to-self frame. More...

WifiTxVector	GetCtsTxVector (Mac48Address to, WifiMode rtsTxMode) const
	Return a TXVECTOR for the CTS frame given the destination and the mode of the RTS used by the sender. More...

WifiTxVector	GetCtsTxVectorForRts (Mac48Address to, WifiMode rtsTxMode) const
	Return a TXVECTOR for the CTS frame given the destination and the mode of the RTS used by the sender. More...

WifiTxVector	GetRtsTxVector (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
	Return a TXVECTOR for the RTS frame given the destination. More...

void	InsertInTxQueue (Ptr< const Packet > packet, const WifiMacHeader &hdr, Time tStamp, uint8_t tid)
	Insert in a temporary queue. More...

bool	IsAmpdu (Ptr< const Packet > packet, const WifiMacHeader hdr)
	Checks if the given packet will be aggregated to an A-MPDU or not. More...

bool	IsNavZero (void) const
	Check if NAV is zero. More...

void	NavCounterResetCtsMissed (Time rtsEndRxTime)
	Reset NAV after CTS was missed when the NAV was setted with RTS. More...

bool	NeedCtsToSelf (void) const
	Check if CTS-to-self mechanism should be used for the current packet. More...

bool	NeedRts (void) const
	Check if the current packet should be sent with a RTS protection. More...

void	NormalAckTimeout (void)
	Event handler when normal ACK timeout occurs. More...

void	NotifyAckTimeoutResetNow ()
	Notify DcfManager that ACK timer should be resetted. More...

void	NotifyAckTimeoutStartNow (Time duration)
	Notify DcfManager that ACK timer should be started for the given duration. More...

void	NotifyCtsTimeoutResetNow ()
	Notify DcfManager that CTS timer should be resetted. More...

void	NotifyCtsTimeoutStartNow (Time duration)
	Notify DcfManagerthat CTS timer should be started for the given duration. More...

void	NotifyNav (Ptr< const Packet > packet, const WifiMacHeader &hdr, WifiPreamble preamble)
	Notify NAV function. More...

Ptr< Packet >	PerformMsduAggregation (Ptr< const Packet > packet, WifiMacHeader hdr, Time tstamp, Ptr< Packet > currentAmpduPacket, uint16_t blockAckSize)
	Perform MSDU aggregation for a given MPDU in an A-MPDU. More...

bool	ReceiveMpdu (Ptr< Packet > packet, WifiMacHeader hdr)

void	RemovePhyMacLowListener (Ptr< WifiPhy > phy)
	Remove current WifiPhy listener for this MacLow. More...

void	ResetBlockAckInactivityTimerIfNeeded (BlockAckAgreement &agreement)
	Every time that a block ack request or a packet with ack policy equals to block ack are received, if a relative block ack agreement exists and the value of inactivity timeout is not 0, the timer is reset. More...

void	RxCompleteBufferedPacketsUntilFirstLost (Mac48Address originator, uint8_t tid)

void	RxCompleteBufferedPacketsWithSmallerSequence (uint16_t seq, Mac48Address originator, uint8_t tid)

void	SendAckAfterData (Mac48Address source, Time duration, WifiMode dataTxMode, double dataSnr)
	Send ACK after receiving DATA. More...

void	SendBlockAckAfterAmpdu (uint8_t tid, Mac48Address originator, Time duration, WifiTxVector blockAckReqTxVector, double rxSnr)
	Invoked after an A-MPDU has been received. More...

void	SendBlockAckAfterBlockAckRequest (const CtrlBAckRequestHeader reqHdr, Mac48Address originator, Time duration, WifiMode blockAckReqTxMode, double rxSnr)
	Invoked after that a block ack request has been received. More...

void	SendBlockAckResponse (const CtrlBAckResponseHeader *blockAck, Mac48Address originator, bool immediate, Time duration, WifiMode blockAckReqTxMode, double rxSnr)
	This method creates block ack frame with header equals to blockAck and start its transmission. More...

void	SendCtsAfterRts (Mac48Address source, Time duration, WifiTxVector rtsTxVector, double rtsSnr)
	Send CTS after receiving RTS. More...

void	SendCtsToSelf (void)
	Send CTS for a CTS-to-self mechanism. More...

void	SendDataAfterCts (Mac48Address source, Time duration)
	Send DATA after receiving CTS. More...

void	SendDataPacket (void)
	Send DATA packet, which can be DATA-ACK or RTS-CTS-DATA-ACK transaction. More...

void	SendMpdu (Ptr< const Packet > packet, WifiTxVector txVector, MpduType mpdutype)
	Forward the MPDU down to WifiPhy for transmission. More...

void	SendRtsForPacket (void)
	Send RTS to begin RTS-CTS-DATA-ACK transaction. More...

void	SetupPhyMacLowListener (const Ptr< WifiPhy > phy)
	Set up WifiPhy listener for this MacLow. More...

void	StartDataTxTimers (WifiTxVector dataTxVector)
	Start a DATA timer by scheduling appropriate ACK timeout. More...

bool	StoreMpduIfNeeded (Ptr< Packet > packet, WifiMacHeader hdr)

void	SuperFastAckTimeout (void)
	Event handler when super fast ACK timeout occurs. More...

void	WaitIfsAfterEndTxFragment (void)
	Event handler that is usually scheduled to fired at the appropriate time after completing transmissions. More...

void	WaitIfsAfterEndTxPacket (void)
	Event handler that is usually scheduled to fired at the appropriate time after sending a packet. More...

Static Private Member Functions
static void	AddWifiMacTrailer (Ptr< Packet > packet)
	Add FCS trailer to a packet. More...

static uint32_t	GetAckSize (void)
	Return the total ACK size (including FCS trailer). More...

static uint32_t	GetBlockAckSize (BlockAckType type)
	Return the total Block ACK size (including FCS trailer). More...

static uint32_t	GetCtsSize (void)
	Return the total CTS size (including FCS trailer). More...

static uint32_t	GetRtsSize (void)
	Return the total RTS size (including FCS trailer). More...

static uint32_t	GetSize (Ptr< const Packet > packet, const WifiMacHeader *hdr, bool isAmpdu)
	Return the total size of the packet after WifiMacHeader and FCS trailer have been added. More...

static bool	IsInWindow (uint16_t seq, uint16_t winstart, uint16_t winsize)

Private Attributes
Time	m_ackTimeout
	ACK timeout duration. More...

Ptr< WifiMacQueue >	m_aggregateQueue [8]
	Queues per TID used for MPDU aggregation. More...

bool	m_ampdu
	Flag if the current transmission involves an A-MPDU. More...

Agreements	m_bAckAgreements
	block ack agreements More...

BlockAckCaches	m_bAckCaches
	block ack caches More...

Time	m_basicBlockAckTimeout
	Basic block ACK timeout duration. More...

EventId	m_blockAckTimeoutEvent
	Block ACK timeout event. More...

Mac48Address	m_bssid
	BSSID address (Mac48Address) More...

Time	m_compressedBlockAckTimeout
	Compressed block ACK timeout duration. More...

Time	m_ctsTimeout
	CTS timeout duration. More...

EventId	m_ctsTimeoutEvent
	CTS timeout event. More...

bool	m_ctsToSelfSupported
	Flag whether CTS-to-self is supported. More...

Ptr< DcaTxop >	m_currentDca
	Current DCA. More...

WifiMacHeader	m_currentHdr
	Header of the current transmitted packet. More...

Ptr< Packet >	m_currentPacket
	Current packet transmitted/to be transmitted. More...

WifiTxVector	m_currentTxVector
	TXVECTOR used for the current packet transmission. More...

DcfManagers	m_dcfManagers
	List of DcfManager. More...

QueueEdcas	m_edca
	EDCA queues. More...

EventId	m_endTxNoAckEvent
	Event for finishing transmission that does not require ACK. More...

EventId	m_fastAckFailedTimeoutEvent
	Fast ACK failed timeout event. More...

EventId	m_fastAckTimeoutEvent
	Fast ACK timeout event. More...

Time	m_lastNavDuration
	The duration of the latest NAV. More...

Time	m_lastNavStart
	The time when the latest NAV started. More...

WifiMacHeader	m_lastReceivedHdr
	Header of the last received packet. More...

EventId	m_navCounterResetCtsMissed
	Event to reset NAV when CTS is not received. More...

EventId	m_normalAckTimeoutEvent
	Normal ACK timeout event. More...

Ptr< WifiPhy >	m_phy
	Pointer to WifiPhy (actually send/receives frames) More...

class PhyMacLowListener *	m_phyMacLowListener
	Listener needed to monitor when a channel switching occurs. More...

Time	m_pifs
	PCF Interframe Space (PIFS) duration. More...

bool	m_promisc
	Flag if the device is operating in promiscuous mode. More...

Time	m_rifs
	Reduced Interframe Space (RIFS) duration. More...

MacLowRxCallback	m_rxCallback
	Callback to pass packet up. More...

Mac48Address	m_self
	Address of this MacLow (Mac48Address) More...

EventId	m_sendAckEvent
	Event to send ACK. More...

EventId	m_sendCtsEvent
	Event to send CTS. More...

EventId	m_sendDataEvent
	Event to send DATA. More...

Time	m_sifs
	Short Interframe Space (SIFS) duration. More...

Time	m_slotTime
	Slot duration. More...

Ptr< WifiRemoteStationManager >	m_stationManager
	Pointer to WifiRemoteStationManager (rate control) More...

EventId	m_superFastAckTimeoutEvent
	Super fast ACK timeout event. More...

std::vector< Item >	m_txPackets [8]
	Contain temporary items to be sent with the next A-MPDU transmission for a given TID, once RTS/CTS exchange has succeeded. More...

MacLowTransmissionParameters	m_txParams
	Transmission parameters of the current packet. More...

EventId	m_waitIfsEvent
	Wait for IFS event. More...

Friends
class	::AmpduAggregationTest
	Allow test cases to access private members. More...

class	::TwoLevelAggregationTest
	Allow test cases to access private members. More...

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

virtual void	DoInitialize (void)
	Initialize() implementation. More...

virtual void	NotifyNewAggregate (void)
	Notify all Objects aggregated to this one of a new Object being aggregated. More...

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes. More...

virtual void	NotifyConstructionCompleted (void)
	Notifier called once the ObjectBase is fully constructed. More...

Related Functions inherited from ns3::ObjectBase
static TypeId	GetObjectIid (void)
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More...

Detailed Description

handle RTS/CTS/DATA/ACK transactions.

Introspection did not find any typical Config paths.

No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 18446744073709551615 bytes (on a 64-bit architecture).

Definition at line 244 of file mac-low.h.

Member Typedef Documentation

typedef std::pair<Mac48Address, uint8_t> ns3::MacLow::AgreementKey

private

agreement key typedef

Definition at line 1161 of file mac-low.h.

typedef std::map<AgreementKey, AgreementValue> ns3::MacLow::Agreements

private

agreements

Definition at line 1164 of file mac-low.h.

typedef std::map<AgreementKey, AgreementValue>::iterator ns3::MacLow::AgreementsI

private

agreements iterator

Definition at line 1165 of file mac-low.h.

typedef std::pair<BlockAckAgreement, std::list<BufferedPacket> > ns3::MacLow::AgreementValue

private

agreement value typedef

Definition at line 1162 of file mac-low.h.

typedef std::map<AgreementKey, BlockAckCache> ns3::MacLow::BlockAckCaches

private

block ack caches typedef

Definition at line 1167 of file mac-low.h.

typedef std::map<AgreementKey, BlockAckCache>::iterator ns3::MacLow::BlockAckCachesI

private

block ack caches iterator typedef

Definition at line 1168 of file mac-low.h.

typedef std::pair<Ptr<Packet>, WifiMacHeader> ns3::MacLow::BufferedPacket

private

buffered packet typedef

Definition at line 1158 of file mac-low.h.

typedef std::list<BufferedPacket>::iterator ns3::MacLow::BufferedPacketI

private

buffered packet iterator typedef

Definition at line 1159 of file mac-low.h.

typedef std::vector<Ptr<DcfManager> > ns3::MacLow::DcfManagers

private

typedef for a list of DcfManager.

Definition at line 1115 of file mac-low.h.

typedef std::vector<Ptr<DcfManager> >::const_iterator ns3::MacLow::DcfManagersCI

private

typedef for an iterator for a list of DcfManager.

Definition at line 1111 of file mac-low.h.

typedef struct Item ns3::MacLow::Item

private

Definition at line 1106 of file mac-low.h.

typedef Callback<void, Ptr<Packet>, const WifiMacHeader*> ns3::MacLow::MacLowRxCallback

typedef for a callback for MacLowRx

Definition at line 254 of file mac-low.h.

typedef std::map<AcIndex, Ptr<EdcaTxopN> > ns3::MacLow::QueueEdcas

private

EDCA queues typedef.

Definition at line 1173 of file mac-low.h.

Constructor & Destructor Documentation

ns3::MacLow::MacLow ( )

Definition at line 261 of file mac-low.cc.

References m_aggregateQueue, and NS_LOG_FUNCTION.

ns3::MacLow::~MacLow ( )

virtual

Definition at line 289 of file mac-low.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::MacLow::AddWifiMacTrailer ( Ptr< Packet > packet )

staticprivate

Add FCS trailer to a packet.

Parameters

packet

Definition at line 3095 of file mac-low.cc.

References ns3::Packet::AddTrailer().

Referenced by AggregateToAmpdu(), ForwardDown(), SendAckAfterData(), SendBlockAckResponse(), SendCtsAfterRts(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), and StartTransmission().

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Ptr< Packet > ns3::MacLow::AggregateToAmpdu	(	Ptr< const Packet >	packet,
		const WifiMacHeader	hdr
	)

Parameters

packet	the packet to be aggregated. If the aggregation is succesfull, it corresponds either to the first data packet that will be aggregated or to the BAR that will be piggybacked at the end of the A-MPDU.
hdr	the WifiMacHeader for the packet.

Returns: the A-MPDU packet if aggregation is successfull, the input packet otherwise

This function adds the packets that will be added to an A-MPDU to an aggregate queue

Todo:: We should also handle Ack and BlockAck

Definition at line 2697 of file mac-low.cc.

Referenced by IsAmpdu().

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void ns3::MacLow::BlockAckTimeout ( void )

private

Event handler when block ACK timeout occurs.

Definition at line 1652 of file mac-low.cc.

References FlushAggregateQueue(), ns3::GetTid(), m_aggregateQueue, m_ampdu, m_currentDca, m_currentHdr, m_currentPacket, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by StartDataTxTimers().

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Time ns3::MacLow::CalculateOverallTxFragmentTime	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		const MacLowTransmissionParameters &	params,
		uint32_t	fragmentSize
	)		const

Parameters

packet	to send (does not include the 802.11 MAC header and checksum)
hdr	header associated to the packet to send.
params	transmission parameters of packet.
fragmentSize	the packet fragment size

Returns: the transmission time that includes the time for the next packet transmission

This transmission time includes the time required for the next packet fragment transmission if one was selected.

Definition at line 1330 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), GetCtsDuration(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), GetRtsSize(), GetRtsTxVector(), GetSifs(), GetSize(), m_ampdu, m_phy, ns3::MacLowTransmissionParameters::MustSendRts(), ns3::MacLowTransmissionParameters::MustWaitAck(), and ns3::Seconds().

Referenced by ns3::EdcaTxopN::GetTxopFragmentSize().

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Time ns3::MacLow::CalculateOverallTxTime	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		const MacLowTransmissionParameters &	params
	)		const

Parameters

packet	to send (does not include the 802.11 MAC header and checksum)
hdr	header associated to the packet to send.
params	transmission parameters of packet.

Returns: the transmission time that includes the time for the next packet transmission

This transmission time includes the time required for the next packet transmission if one was selected.

Definition at line 1306 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), GetCtsDuration(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), GetRtsSize(), GetRtsTxVector(), GetSifs(), GetSize(), m_ampdu, m_phy, ns3::MacLowTransmissionParameters::MustSendRts(), ns3::MacLowTransmissionParameters::MustWaitAck(), and ns3::Seconds().

Referenced by CalculateTransmissionTime(), ns3::EdcaTxopN::HasTxop(), and ns3::EdcaTxopN::NeedFragmentation().

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Time ns3::MacLow::CalculateTransmissionTime	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		const MacLowTransmissionParameters &	parameters
	)		const

Parameters

packet	to send (does not include the 802.11 MAC header and checksum)
hdr	header associated to the packet to send.
parameters	transmission parameters of packet.

Returns: the transmission time that includes the time for the next packet transmission

This transmission time includes the time required for the next packet transmission if one was selected.

Definition at line 1356 of file mac-low.cc.

References CalculateOverallTxTime(), ns3::WifiPhy::CalculateTxDuration(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), ns3::MacLowTransmissionParameters::HasNextPacket(), and m_phy.

Referenced by ns3::WaveMacLow::StartTransmission().

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void ns3::MacLow::CancelAllEvents ( void )

private

Cancel all scheduled events.

Called before beginning a transmission or switching channel.

Definition at line 354 of file mac-low.cc.

References ns3::EventId::Cancel(), ns3::EventId::IsRunning(), m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_currentDca, m_endTxNoAckEvent, m_fastAckFailedTimeoutEvent, m_fastAckTimeoutEvent, m_normalAckTimeoutEvent, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_superFastAckTimeoutEvent, m_waitIfsEvent, and NS_LOG_FUNCTION.

Referenced by NotifySleepNow(), NotifySwitchingStartNow(), and StartTransmission().

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void ns3::MacLow::CreateBlockAckAgreement	(	const MgtAddBaResponseHeader *	respHdr,
		Mac48Address	originator,
		uint16_t	startingSeq
	)

Parameters

respHdr	Add block ack response from originator (action frame).
originator	Address of peer station involved in block ack mechanism.
startingSeq	Sequence number of the first MPDU of all packets for which block ack was negotiated.

This function is typically invoked only by ns3::RegularWifiMac when the STA (which may be non-AP in ESS, or in an IBSS) has received an ADDBA Request frame and is transmitting an ADDBA Response frame. At this point MacLow must allocate buffers to collect all correctly received packets belonging to the category for which Block Ack was negotiated.

Definition at line 2245 of file mac-low.cc.

Referenced by ns3::RegularWifiMac::SendAddBaResponse().

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void ns3::MacLow::CtsTimeout ( void )

private

Event handler when CTS timeout occurs.

Todo:: should check that there was no rx start before now. we should restart a new cts timeout now until the expected end of rx if there was a rx start before now.

Definition at line 1600 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), m_ampdu, m_currentDca, m_currentHdr, m_stationManager, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportRtsFailed().

Referenced by SendRtsForPacket().

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void ns3::MacLow::DeaggregateAmpduAndReceive	(	Ptr< Packet >	aggregatedPacket,
		double	rxSnr,
		WifiTxVector	txVector
	)

Parameters

aggregatedPacket	which is the current A-MPDU
rxSnr	snr of packet received
txVector	TXVECTOR of packet received

This function de-aggregates an A-MPDU and decide if each MPDU is received correctly or not

Definition at line 2572 of file mac-low.cc.

Referenced by SetPhy().

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void ns3::MacLow::DestroyBlockAckAgreement	(	Mac48Address	originator,
		uint8_t	tid
	)

Parameters

originator	Address of peer participating in Block Ack mechanism.
tid	TID for which Block Ack was created.

Checks if exists an established block ack agreement with originator for tid tid. If the agreement exists, tears down it. This function is typically invoked when a DELBA frame is received from originator.

Definition at line 2287 of file mac-low.cc.

References m_bAckAgreements, m_bAckCaches, NS_ASSERT, NS_LOG_FUNCTION, RxCompleteBufferedPacketsUntilFirstLost(), and RxCompleteBufferedPacketsWithSmallerSequence().

Referenced by ns3::EdcaTxopN::GotAck(), and ns3::RegularWifiMac::Receive().

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void ns3::MacLow::DoDispose ( void )

privatevirtual

Destructor implementation.

This method is called by Dispose() or by the Object's destructor, whichever comes first.

Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e, for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose() method.

It is safe to call GetObject() from within this method.

Reimplemented from ns3::Object.

Definition at line 325 of file mac-low.cc.

References ns3::EventId::Cancel(), m_aggregateQueue, m_ampdu, m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_endTxNoAckEvent, m_fastAckFailedTimeoutEvent, m_fastAckTimeoutEvent, m_normalAckTimeoutEvent, m_phy, m_phyMacLowListener, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_stationManager, m_superFastAckTimeoutEvent, m_waitIfsEvent, and NS_LOG_FUNCTION.

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void ns3::MacLow::DoNavResetNow ( Time duration )

private

Reset NAV with the given duration.

Parameters

duration

Definition at line 1422 of file mac-low.cc.

References m_dcfManagers, m_lastNavDuration, m_lastNavStart, and ns3::Simulator::Now().

Referenced by NavCounterResetCtsMissed(), and NotifyNav().

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bool ns3::MacLow::DoNavStartNow ( Time duration )

private

Start NAV with the given duration.

Parameters

duration the duration

Returns: true if NAV is resetted

Definition at line 1433 of file mac-low.cc.

References m_dcfManagers, m_lastNavDuration, m_lastNavStart, and ns3::Simulator::Now().

Referenced by NotifyNav().

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void ns3::MacLow::EndTxNoAck ( void )

private

A transmission that does not require an ACK has completed.

Definition at line 2115 of file mac-low.cc.

References m_currentDca.

Referenced by StartDataTxTimers().

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void ns3::MacLow::FastAckFailedTimeout ( void )

private

Event handler when fast ACK timeout occurs (busy).

Definition at line 2123 of file mac-low.cc.

References m_currentDca, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by ReceiveError().

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void ns3::MacLow::FastAckTimeout ( void )

private

Event handler when fast ACK timeout occurs (idle).

Definition at line 1634 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiPhy::IsStateIdle(), m_currentDca, m_currentHdr, m_phy, m_stationManager, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::FlushAggregateQueue ( uint8_t tid )

This function is called to flush the aggregate queue, which is used for A-MPDU.

Parameters

tid	the Traffic ID

Definition at line 3009 of file mac-low.cc.

References m_aggregateQueue, m_txPackets, and NS_LOG_DEBUG.

Referenced by AggregateToAmpdu(), BlockAckTimeout(), ns3::EdcaTxopN::MissedCts(), NormalAckTimeout(), and ReceiveOk().

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void ns3::MacLow::ForwardDown	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		WifiTxVector	txVector
	)

private

Forward the packet down to WifiPhy for transmission.

This is called for the entire A-MPDu when MPDU aggregation is used.

Parameters

packet	the packet
hdr	the header
txVector	the transmit vector

Definition at line 1487 of file mac-low.cc.

Referenced by SendAckAfterData(), SendBlockAckResponse(), SendCtsAfterRts(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), and SendRtsForPacket().

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Time ns3::MacLow::GetAckDuration ( WifiTxVector ackTxVector ) const

private

Return the time required to transmit the ACK (including preamble and FCS).

Parameters

ackTxVector

Returns: the time required to transmit the ACK (including preamble and FCS)

Definition at line 1201 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetAckSize(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), m_phy, NS_ASSERT, and ns3::WIFI_MOD_CLASS_HT.

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), GetAckDuration(), SendAckAfterData(), SendBlockAckResponse(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), and SendRtsForPacket().

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Time ns3::MacLow::GetAckDuration	(	Mac48Address	to,
		WifiTxVector	dataTxVector
	)		const

private

Return the time required to transmit the ACK to the specified address given the TXVECTOR of the DATA (including preamble and FCS).

Parameters

to
dataTxVector

Returns: the time required to transmit the ACK (including preamble and FCS)

Definition at line 1194 of file mac-low.cc.

References GetAckDuration(), GetAckTxVectorForData(), and ns3::WifiTxVector::GetMode().

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uint32_t ns3::MacLow::GetAckSize ( void )

staticprivate

Return the total ACK size (including FCS trailer).

Returns: the total ACK size

Definition at line 1156 of file mac-low.cc.

References ns3::WifiMacHeader::GetSize(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_ACK.

Referenced by GetAckDuration().

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Time ns3::MacLow::GetAckTimeout ( void ) const

Return ACK timeout of this MacLow.

Returns: ACK timeout

Definition at line 535 of file mac-low.cc.

References m_ackTimeout.

Referenced by ns3::RegularWifiMac::GetAckTimeout(), and StartDataTxTimers().

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WifiTxVector ns3::MacLow::GetAckTxVector	(	Mac48Address	to,
		WifiMode	dataTxMode
	)		const

private

Return a TXVECTOR for the ACK frame given the destination and the mode of the DATA used by the sender.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

to	the MAC address of the ACK receiver
dataTxMode	the mode of the DATA used by the sender

Returns: TXVECTOR for the ACK

Definition at line 1282 of file mac-low.cc.

References ns3::WifiRemoteStationManager::GetAckTxVector(), and m_stationManager.

Referenced by GetAckTxVectorForData(), and SendAckAfterData().

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WifiTxVector ns3::MacLow::GetAckTxVectorForData	(	Mac48Address	to,
		WifiMode	dataTxMode
	)		const

private

Return a TXVECTOR for the Block ACK frame given the destination and the mode of the DATA used by the sender.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

to	the MAC address of the Block ACK receiver
dataTxMode	the mode of the DATA used by the sender

Returns: TXVECTOR for the Block ACK

Definition at line 1300 of file mac-low.cc.

References GetAckTxVector().

Referenced by GetAckDuration().

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Mac48Address ns3::MacLow::GetAddress ( void ) const

Return the MAC address of this MacLow.

Returns: Mac48Address of this MacLow

Definition at line 529 of file mac-low.cc.

References m_self.

Referenced by ns3::StaWifiMac::Enqueue(), ns3::AdhocWifiMac::Enqueue(), ns3::MeshWifiInterfaceMac::Enqueue(), ns3::ApWifiMac::Enqueue(), ns3::RegularWifiMac::GetAddress(), ns3::EdcaTxopN::MissedAck(), ns3::EdcaTxopN::MissedBlockAck(), ns3::EdcaTxopN::MissedCts(), ns3::EdcaTxopN::SendAddBaRequest(), ns3::EdcaTxopN::SendBlockAckRequest(), SendBlockAckResponse(), and ns3::EdcaTxopN::SendDelbaFrame().

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Time ns3::MacLow::GetBasicBlockAckTimeout ( ) const

Return Basic Block ACK timeout of this MacLow.

Returns: Basic Block ACK timeout

Definition at line 541 of file mac-low.cc.

References m_basicBlockAckTimeout.

Referenced by ns3::RegularWifiMac::GetBasicBlockAckTimeout(), and StartDataTxTimers().

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Time ns3::MacLow::GetBlockAckDuration	(	Mac48Address	to,
		WifiTxVector	blockAckReqTxVector,
		BlockAckType	type
	)		const

private

Return the time required to transmit the Block ACK to the specified address given the TXVECTOR of the BAR (including preamble and FCS).

Parameters

to
blockAckReqTxVector
type	the Block ACK type

Returns: the time required to transmit the Block ACK (including preamble and FCS)

Definition at line 1208 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetBlockAckSize(), ns3::WifiPhy::GetFrequency(), and m_phy.

Referenced by SendBlockAckResponse(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), and SendRtsForPacket().

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uint32_t ns3::MacLow::GetBlockAckSize ( BlockAckType type )

staticprivate

Return the total Block ACK size (including FCS trailer).

Parameters

type	the Block ACK type

Returns: the total Block ACK size

Definition at line 1164 of file mac-low.cc.

References ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::CtrlBAckResponseHeader::GetSerializedSize(), ns3::WifiMacHeader::GetSize(), ns3::MULTI_TID_BLOCK_ACK, NS_ASSERT, ns3::WifiMacHeader::SetType(), ns3::CtrlBAckResponseHeader::SetType(), and ns3::WIFI_MAC_CTL_BACKRESP.

Referenced by GetBlockAckDuration().

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WifiTxVector ns3::MacLow::GetBlockAckTxVector	(	Mac48Address	to,
		WifiMode	dataTxMode
	)		const

private

Return a TXVECTOR for the Block ACK frame given the destination and the mode of the DATA used by the sender.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

to	the MAC address of the Block ACK receiver
dataTxMode	the mode of the DATA used by the sender

Returns: TXVECTOR for the Block ACK

Definition at line 1288 of file mac-low.cc.

References ns3::WifiRemoteStationManager::GetBlockAckTxVector(), and m_stationManager.

Referenced by SendBlockAckResponse(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), and SendRtsForPacket().

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Mac48Address ns3::MacLow::GetBssid ( void ) const

Return the Basic Service Set Identification.

Returns: BSSID

Definition at line 585 of file mac-low.cc.

References m_bssid.

Referenced by ns3::RegularWifiMac::GetBssid(), ns3::EdcaTxopN::MissedAck(), ns3::EdcaTxopN::MissedBlockAck(), ns3::EdcaTxopN::MissedCts(), ns3::EdcaTxopN::NotifyAccessGranted(), PerformMsduAggregation(), and ns3::EdcaTxopN::SendBlockAckRequest().

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Time ns3::MacLow::GetCompressedBlockAckTimeout ( ) const

Return Compressed Block ACK timeout of this MacLow.

Returns: Compressed Block ACK timeout

Definition at line 547 of file mac-low.cc.

References m_compressedBlockAckTimeout.

Referenced by ns3::RegularWifiMac::GetCompressedBlockAckTimeout(), and StartDataTxTimers().

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Time ns3::MacLow::GetCtsDuration ( WifiTxVector ctsTxVector ) const

private

Return the time required to transmit the CTS (including preamble and FCS).

Parameters

ctsTxVector

Returns: the time required to transmit the CTS (including preamble and FCS)

Definition at line 1225 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetCtsSize(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), m_phy, NS_ASSERT, and ns3::WIFI_MOD_CLASS_HT.

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), GetCtsDuration(), SendCtsAfterRts(), and SendRtsForPacket().

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Time ns3::MacLow::GetCtsDuration	(	Mac48Address	to,
		WifiTxVector	rtsTxVector
	)		const

private

Return the time required to transmit the CTS to the specified address given the TXVECTOR of the RTS (including preamble and FCS).

Parameters

to
rtsTxVector

Returns: the time required to transmit the CTS (including preamble and FCS)

Definition at line 1218 of file mac-low.cc.

References GetCtsDuration(), GetCtsTxVectorForRts(), and ns3::WifiTxVector::GetMode().

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uint32_t ns3::MacLow::GetCtsSize ( void )

staticprivate

Return the total CTS size (including FCS trailer).

Returns: the total CTS size

Definition at line 1232 of file mac-low.cc.

References ns3::WifiMacHeader::GetSize(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by GetCtsDuration(), and SendCtsToSelf().

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Time ns3::MacLow::GetCtsTimeout ( void ) const

Return CTS timeout of this MacLow.

Returns: CTS timeout

Definition at line 553 of file mac-low.cc.

References m_ctsTimeout.

Referenced by ns3::RegularWifiMac::GetCtsTimeout(), and SendRtsForPacket().

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bool ns3::MacLow::GetCtsToSelfSupported ( ) const

Return whether CTS-to-self capability is supported.

Returns: true if CTS-to-self is supported, false otherwise

Definition at line 481 of file mac-low.cc.

References m_ctsToSelfSupported.

Referenced by ns3::RegularWifiMac::GetCtsToSelfSupported().

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WifiTxVector ns3::MacLow::GetCtsToSelfTxVector	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr
	)		const

private

Return a TXVECTOR for the CTS-to-self frame.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

packet	the packet that requires CTS-to-self
hdr	the Wifi header of the packet

Returns: TXVECTOR for the CTS-to-self operation

Definition at line 1256 of file mac-low.cc.

References ns3::WifiRemoteStationManager::GetCtsToSelfTxVector(), and m_stationManager.

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WifiTxVector ns3::MacLow::GetCtsTxVector	(	Mac48Address	to,
		WifiMode	rtsTxMode
	)		const

private

Return a TXVECTOR for the CTS frame given the destination and the mode of the RTS used by the sender.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

to	the MAC address of the CTS receiver
rtsTxMode	the mode of the RTS used by the sender

Returns: TXVECTOR for the CTS

Definition at line 1276 of file mac-low.cc.

References ns3::WifiRemoteStationManager::GetCtsTxVector(), and m_stationManager.

Referenced by GetCtsTxVectorForRts(), and SendCtsAfterRts().

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WifiTxVector ns3::MacLow::GetCtsTxVectorForRts	(	Mac48Address	to,
		WifiMode	rtsTxMode
	)		const

private

Return a TXVECTOR for the CTS frame given the destination and the mode of the RTS used by the sender.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

to	the MAC address of the CTS receiver
rtsTxMode	the mode of the RTS used by the sender

Returns: TXVECTOR for the CTS

Definition at line 1294 of file mac-low.cc.

References GetCtsTxVector().

Referenced by GetCtsDuration().

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WifiTxVector ns3::MacLow::GetDataTxVector	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr
	)		const

virtual

Return a TXVECTOR for the DATA frame given the destination.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

packet	the packet being asked for TXVECTOR
hdr	the WifiMacHeader

Returns: TXVECTOR for the given packet

Reimplemented in ns3::WaveMacLow.

Definition at line 1269 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiRemoteStationManager::GetDataTxVector(), and m_stationManager.

Referenced by AggregateToAmpdu(), CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), CalculateTransmissionTime(), AmpduAggregationTest::DoRun(), TwoLevelAggregationTest::DoRun(), ns3::WaveMacLow::GetDataTxVector(), NeedCtsToSelf(), NeedRts(), ns3::EdcaTxopN::RestartAccessIfNeeded(), ns3::EdcaTxopN::StartAccessIfNeeded(), and StartTransmission().

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Ptr< WifiPhy > ns3::MacLow::GetPhy ( void ) const

Returns: current attached PHY device

Definition at line 430 of file mac-low.cc.

References m_phy.

Referenced by ns3::WaveMacLow::StartTransmission().

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Time ns3::MacLow::GetPifs ( void ) const

Return PCF Interframe Space (PIFS) of this MacLow.

Returns: PIFS

Definition at line 579 of file mac-low.cc.

References m_pifs.

Referenced by ns3::RegularWifiMac::GetPifs(), and StartDataTxTimers().

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Time ns3::MacLow::GetRifs ( void ) const

Return Reduced Interframe Space (RIFS) of this MacLow.

Returns: RIFS

Definition at line 566 of file mac-low.cc.

References m_rifs, and NS_LOG_FUNCTION.

Referenced by ns3::RegularWifiMac::GetRifs(), ReceiveOk(), SendDataAfterCts(), SendDataPacket(), and StartDataTxTimers().

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uint32_t ns3::MacLow::GetRtsSize ( void )

staticprivate

Return the total RTS size (including FCS trailer).

Returns: the total RTS size

Definition at line 1186 of file mac-low.cc.

References ns3::WifiMacHeader::GetSize(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_RTS.

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), and SendRtsForPacket().

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WifiTxVector ns3::MacLow::GetRtsTxVector	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr
	)		const

private

Return a TXVECTOR for the RTS frame given the destination.

The function consults WifiRemoteStationManager, which controls the rate to different destinations.

Parameters

packet	the packet being asked for RTS TXVECTOR
hdr	the WifiMacHeader

Returns: TXVECTOR for the RTS of the given packet

Definition at line 1262 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiRemoteStationManager::GetRtsTxVector(), and m_stationManager.

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), NotifyNav(), SendCtsToSelf(), and SendRtsForPacket().

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Time ns3::MacLow::GetSifs ( void ) const

Return Short Interframe Space (SIFS) of this MacLow.

Returns: SIFS

Definition at line 559 of file mac-low.cc.

References m_sifs, and NS_LOG_FUNCTION.

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), CalculateTransmissionTime(), DeaggregateAmpduAndReceive(), ns3::RegularWifiMac::GetSifs(), NotifyNav(), ReceiveError(), ReceiveOk(), SendAckAfterData(), SendBlockAckResponse(), SendCtsAfterRts(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), and StartDataTxTimers().

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uint32_t ns3::MacLow::GetSize	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		bool	isAmpdu
	)

staticprivate

Return the total size of the packet after WifiMacHeader and FCS trailer have been added.

Parameters

packet	the packet to be encapsulated with WifiMacHeader and FCS trailer
hdr	the WifiMacHeader
isAmpdu	whether packet is part of an A-MPDU

Returns: the total packet size

Definition at line 1240 of file mac-low.cc.

References ns3::WifiMacTrailer::GetSerializedSize(), ns3::Packet::GetSize(), and ns3::WifiMacHeader::GetSize().

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), SendCtsToSelf(), SendDataAfterCts(), SendRtsForPacket(), StartDataTxTimers(), and StartTransmission().

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Time ns3::MacLow::GetSlotTime ( void ) const

Return slot duration of this MacLow.

Returns: slot duration

Definition at line 573 of file mac-low.cc.

References m_slotTime.

Referenced by ns3::RegularWifiMac::GetSlot(), and NotifyNav().

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TypeId ns3::MacLow::GetTypeId ( void )

static

Register this type.

Returns: The TypeId.

Definition at line 296 of file mac-low.cc.

References ns3::TypeId::SetParent().

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void ns3::MacLow::InsertInTxQueue	(	Ptr< const Packet >	packet,
		const WifiMacHeader &	hdr,
		Time	tStamp,
		uint8_t	tid
	)

private

Insert in a temporary queue.

It is only used with a RTS/CTS exchange for an A-MPDU transmission.

Parameters

packet	packet to be inserted in the A-MPDU tx queue
hdr	802.11 header for the packet to be inserted in the A-MPDU tx queue
tStamp	timestamp of the packet to be inserted in the A-MPDU tx queue
tid	the Traffic ID of the packet to be inserted in the A-MPDU tx queue

Definition at line 3020 of file mac-low.cc.

References ns3::MacLow::Item::hdr, m_txPackets, NS_LOG_FUNCTION, ns3::MacLow::Item::packet, and ns3::MacLow::Item::timestamp.

Referenced by AggregateToAmpdu().

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bool ns3::MacLow::IsAmpdu	(	Ptr< const Packet >	packet,
		const WifiMacHeader	hdr
	)

private

Checks if the given packet will be aggregated to an A-MPDU or not.

Parameters

packet	packet to check whether it can be aggregated in an A-MPDU
hdr	802.11 header for packet to check whether it can be aggregated in an A-MPDU

Returns: true if is A-MPDU

Definition at line 609 of file mac-low.cc.

References AggregateToAmpdu(), ns3::WifiMacTrailer::GetSerializedSize(), ns3::Packet::GetSize(), ns3::WifiMacHeader::GetSize(), and m_currentPacket.

Referenced by AmpduAggregationTest::DoRun(), and StartTransmission().

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bool ns3::MacLow::IsInWindow	(	uint16_t	seq,
		uint16_t	winstart,
		uint16_t	winsize
	)

staticprivate

Parameters

seq	MPDU sequence number
winstart	sequence number window start
winsize	the size of the sequence number window (currently default is 64)

Returns: true if in the window

This method checks if the MPDU's sequence number is inside the scoreboard boundaries or not

Definition at line 2165 of file mac-low.cc.

Referenced by AggregateToAmpdu(), and ReceiveMpdu().

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bool ns3::MacLow::IsNavZero ( void ) const

private

Check if NAV is zero.

Returns: true if NAV is zero, false otherwise

Definition at line 1893 of file mac-low.cc.

References m_lastNavDuration, m_lastNavStart, and ns3::Simulator::Now().

Referenced by ReceiveOk().

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bool ns3::MacLow::IsPromisc ( void ) const

Check if MacLow is operating in promiscuous mode.

Returns: true if MacLow is operating in promiscuous mode, false otherwise

Definition at line 591 of file mac-low.cc.

References m_promisc.

void ns3::MacLow::NavCounterResetCtsMissed ( Time rtsEndRxTime )

private

Reset NAV after CTS was missed when the NAV was setted with RTS.

Parameters

rtsEndRxTime

Definition at line 1413 of file mac-low.cc.

References DoNavResetNow(), ns3::WifiPhy::GetLastRxStartTime(), m_phy, and ns3::Seconds().

Referenced by NotifyNav().

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bool ns3::MacLow::NeedCtsToSelf ( void ) const

private

Check if CTS-to-self mechanism should be used for the current packet.

Returns: true if CTS-to-self mechanism should be used for the current packet, false otherwise

Definition at line 758 of file mac-low.cc.

References GetDataTxVector(), m_currentHdr, m_currentPacket, m_stationManager, and ns3::WifiRemoteStationManager::NeedCtsToSelf().

Referenced by StartTransmission().

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bool ns3::MacLow::NeedRts ( void ) const

private

Check if the current packet should be sent with a RTS protection.

Returns: true if RTS protection should be used, false otherwise

Definition at line 750 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), GetDataTxVector(), m_currentHdr, m_currentPacket, m_stationManager, and ns3::WifiRemoteStationManager::NeedRts().

Referenced by StartTransmission().

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void ns3::MacLow::NormalAckTimeout ( void )

private

Event handler when normal ACK timeout occurs.

Todo:: should check that there was no rx start before now. we should restart a new ack timeout now until the expected end of rx if there was a rx start before now.

Definition at line 1615 of file mac-low.cc.

References FlushAggregateQueue(), ns3::WifiMacHeader::GetAddr1(), ns3::GetTid(), ns3::WifiMacHeader::IsQosData(), m_ampdu, m_currentDca, m_currentHdr, m_currentPacket, m_stationManager, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::NotifyAckTimeoutResetNow ( )

private

Notify DcfManager that ACK timer should be resetted.

Definition at line 1460 of file mac-low.cc.

References m_dcfManagers.

Referenced by ReceiveOk().

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void ns3::MacLow::NotifyAckTimeoutStartNow ( Time duration )

private

Notify DcfManager that ACK timer should be started for the given duration.

Parameters

duration the duration

Definition at line 1451 of file mac-low.cc.

References m_dcfManagers.

Referenced by StartDataTxTimers().

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void ns3::MacLow::NotifyCtsTimeoutResetNow ( )

private

Notify DcfManager that CTS timer should be resetted.

Definition at line 1478 of file mac-low.cc.

References m_dcfManagers.

Referenced by ReceiveOk().

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void ns3::MacLow::NotifyCtsTimeoutStartNow ( Time duration )

private

Notify DcfManagerthat CTS timer should be started for the given duration.

Parameters

duration

Definition at line 1469 of file mac-low.cc.

References m_dcfManagers.

Referenced by SendRtsForPacket().

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void ns3::MacLow::NotifyNav	(	Ptr< const Packet >	packet,
		const WifiMacHeader &	hdr,
		WifiPreamble	preamble
	)

private

Notify NAV function.

Parameters

packet	the packet
hdr	the header
preamble	the preamble

Todo:: We should also handle CF_END specially here but we don't for now because we do not generate them.

A STA that used information from an RTS frame as the most recent basis to update its NAV setting is permitted to reset its NAV if no PHY-RXSTART.indication is detected from the PHY during a period with a duration of (2 * aSIFSTime) + (CTS_Time) + (2 * aSlotTime) starting at the PHY-RXEND.indication corresponding to the detection of the RTS frame. The “CTS_Time” shall be calculated using the length of the CTS frame and the data rate at which the RTS frame used for the most recent NAV update was received.

Definition at line 1371 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), DoNavResetNow(), DoNavStartNow(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetDuration(), ns3::WifiPhy::GetFrequency(), GetRtsTxVector(), ns3::WifiMacHeader::GetSerializedSize(), GetSifs(), GetSlotTime(), ns3::WifiMacHeader::IsCfpoll(), ns3::WifiMacHeader::IsRts(), m_bssid, m_lastNavStart, m_navCounterResetCtsMissed, m_phy, m_self, NavCounterResetCtsMissed(), ns3::Simulator::Now(), NS_ASSERT, ns3::Simulator::Schedule(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by DeaggregateAmpduAndReceive(), and ReceiveOk().

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void ns3::MacLow::NotifySleepNow ( void )

This method is typically invoked by the PhyMacLowListener to notify the MAC layer that the device has been put into sleep mode.

When the device is put into sleep mode, pending MAC transmissions (RTS, CTS, DATA and ACK) are cancelled.

Definition at line 795 of file mac-low.cc.

References ns3::EventId::Cancel(), CancelAllEvents(), ns3::EventId::IsRunning(), m_currentDca, m_currentPacket, m_lastNavDuration, m_lastNavStart, m_navCounterResetCtsMissed, ns3::Simulator::Now(), NS_LOG_DEBUG, and ns3::Seconds().

Referenced by ns3::PhyMacLowListener::NotifySleep(), and ns3::OcbWifiMac::Suspend().

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void ns3::MacLow::NotifySwitchingStartNow ( Time duration )

Parameters

duration switching delay duration.

This method is typically invoked by the PhyMacLowListener to notify the MAC layer that a channel switching occured. When a channel switching occurs, pending MAC transmissions (RTS, CTS, DATA and ACK) are cancelled.

Definition at line 779 of file mac-low.cc.

References ns3::EventId::Cancel(), CancelAllEvents(), ns3::EventId::IsRunning(), m_currentDca, m_currentPacket, m_lastNavDuration, m_lastNavStart, m_navCounterResetCtsMissed, m_stationManager, ns3::Simulator::Now(), NS_LOG_DEBUG, ns3::WifiRemoteStationManager::Reset(), and ns3::Seconds().

Referenced by ns3::PhyMacLowListener::NotifySwitchingStart(), and ns3::OcbWifiMac::Reset().

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Ptr< Packet > ns3::MacLow::PerformMsduAggregation	(	Ptr< const Packet >	packet,
		WifiMacHeader *	hdr,
		Time *	tstamp,
		Ptr< Packet >	currentAmpduPacket,
		uint16_t	blockAckSize
	)

private

Perform MSDU aggregation for a given MPDU in an A-MPDU.

Parameters

packet	packet picked for aggregation
hdr	802.11 header for packet picked for aggregation
tstamp	timestamp
currentAmpduPacket	current A-MPDU packet
blockAckSize	size of the piggybacked block ack request

Returns: the aggregate if MSDU aggregation succeeded, 0 otherwise

Definition at line 3031 of file mac-low.cc.

References ns3::WifiMacHeader::ADDR1, ns3::WifiMacHeader::GetAddr1(), GetBssid(), ns3::WifiMacHeader::GetQosTid(), ns3::Packet::GetSize(), ns3::GetTid(), m_edca, NS_ASSERT, NS_LOG_DEBUG, ns3::QosUtilsMapTidToAc(), ns3::WifiMacHeader::SetAddr3(), ns3::WifiMacHeader::SetQosAmsdu(), and StopMpduAggregation().

Referenced by AggregateToAmpdu(), and TwoLevelAggregationTest::DoRun().

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void ns3::MacLow::ReceiveError	(	Ptr< Packet >	packet,
		double	rxSnr
	)

Parameters

packet	packet received.
rxSnr	snr of packet received.

This method is typically invoked by the lower PHY layer to notify the MAC layer that a packet was unsuccessfully received.

Definition at line 765 of file mac-low.cc.

References FastAckFailedTimeout(), GetSifs(), ns3::EventId::IsExpired(), m_fastAckFailedTimeoutEvent, m_txParams, ns3::MacLowTransmissionParameters::MustWaitFastAck(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

Referenced by SetPhy().

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bool ns3::MacLow::ReceiveMpdu	(	Ptr< Packet >	packet,
		WifiMacHeader	hdr
	)

private

Parameters

packet	the packet
hdr	the header

Returns: true if MPDU received

This method updates the reorder buffer and the scoreboard when an MPDU is received in an HT station and stores the MPDU if needed when an MPDU is received in an non-HT Station (implements HT immediate block Ack)

Definition at line 2171 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetQosTid(), ns3::WifiMacHeader::GetSequenceNumber(), ns3::WifiRemoteStationManager::HasHtSupported(), ns3::WifiRemoteStationManager::HasVhtSupported(), IsInWindow(), ns3::WifiMacHeader::IsQosData(), m_bAckAgreements, m_stationManager, ns3::QosUtilsIsOldPacket(), RxCompleteBufferedPacketsUntilFirstLost(), RxCompleteBufferedPacketsWithSmallerSequence(), and StoreMpduIfNeeded().

Referenced by ReceiveOk().

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void ns3::MacLow::ReceiveOk	(	Ptr< Packet >	packet,
		double	rxSnr,
		WifiTxVector	txVector,
		bool	ampduSubframe
	)

Parameters

packet	packet received
rxSnr	snr of packet received
txVector	TXVECTOR of packet received
ampduSubframe	true if this MPDU is part of an A-MPDU

This method is typically invoked by the lower PHY layer to notify the MAC layer that a packet was successfully received.

Definition at line 810 of file mac-low.cc.

References ns3::Packet::AddPacketTag(), ns3::EventId::Cancel(), FlushAggregateQueue(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiTxVector::GetMode(), ns3::WifiTxVector::GetPreambleType(), ns3::WifiMacHeader::GetQosTid(), GetRifs(), ns3::WifiRemoteStationManager::GetRifsPermitted(), GetSifs(), ns3::CtrlBAckRequestHeader::GetStartingSequence(), ns3::GetTid(), ns3::CtrlBAckRequestHeader::GetTidInfo(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), ns3::CtrlBAckRequestHeader::IsMultiTid(), IsNavZero(), ns3::WifiMacHeader::IsQosData(), ns3::EventId::IsRunning(), m_ampdu, m_bAckAgreements, m_bAckCaches, m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_currentDca, m_currentHdr, m_currentPacket, m_edca, m_fastAckTimeoutEvent, m_lastReceivedHdr, m_normalAckTimeoutEvent, m_promisc, m_rxCallback, m_self, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_stationManager, m_superFastAckTimeoutEvent, m_txParams, m_waitIfsEvent, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), ns3::MacLowTransmissionParameters::MustWaitFastAck(), ns3::MacLowTransmissionParameters::MustWaitNormalAck(), NotifyAckTimeoutResetNow(), NotifyCtsTimeoutResetNow(), NotifyNav(), NS_ASSERT, NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::QosUtilsMapTidToAc(), ReceiveMpdu(), ns3::Packet::RemoveHeader(), ns3::Packet::RemovePacketTag(), ns3::Packet::RemoveTrailer(), ns3::WifiRemoteStationManager::ReportDataOk(), ns3::WifiRemoteStationManager::ReportRtsOk(), ns3::WifiRemoteStationManager::ReportRxOk(), ResetBlockAckInactivityTimerIfNeeded(), RxCompleteBufferedPacketsUntilFirstLost(), RxCompleteBufferedPacketsWithSmallerSequence(), ns3::Simulator::Schedule(), SendAckAfterData(), SendBlockAckAfterBlockAckRequest(), SendCtsAfterRts(), SendDataAfterCts(), ns3::SnrTag::Set(), WaitIfsAfterEndTxFragment(), and WaitIfsAfterEndTxPacket().

Referenced by DeaggregateAmpduAndReceive().

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void ns3::MacLow::RegisterDcf ( Ptr< DcfManager > dcf )

Parameters

dcf	listen to NAV events for every incoming and outgoing packet.

Definition at line 603 of file mac-low.cc.

References m_dcfManagers.

Referenced by ns3::DcfManager::SetupLow().

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void ns3::MacLow::RegisterEdcaForAc	(	AcIndex	ac,
		Ptr< EdcaTxopN >	edca
	)

Parameters

ac	Access class managed by the queue.
edca	the EdcaTxopN for the queue.

The lifetime of the registered EdcaTxopN is typically equal to the lifetime of the queue associated to this AC.

Definition at line 2566 of file mac-low.cc.

References m_edca.

Referenced by ns3::EdcaTxopN::CompleteConfig().

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void ns3::MacLow::RemovePhyMacLowListener ( Ptr< WifiPhy > phy )

private

Remove current WifiPhy listener for this MacLow.

Parameters

phy	the WifiPhy this MacLow is connected to

Definition at line 314 of file mac-low.cc.

References m_phyMacLowListener, and ns3::WifiPhy::UnregisterListener().

Referenced by ResetPhy().

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void ns3::MacLow::ResetBlockAckInactivityTimerIfNeeded ( BlockAckAgreement & agreement )

private

Every time that a block ack request or a packet with ack policy equals to block ack are received, if a relative block ack agreement exists and the value of inactivity timeout is not 0, the timer is reset.

see section 11.5.3 in IEEE 802.11e for more details.

Parameters

agreement

Definition at line 2550 of file mac-low.cc.

References ns3::EventId::Cancel(), ns3::BlockAckAgreement::GetPeer(), ns3::BlockAckAgreement::GetTid(), ns3::BlockAckAgreement::GetTimeout(), ns3::EventId::IsRunning(), m_edca, ns3::BlockAckAgreement::m_inactivityEvent, ns3::MicroSeconds(), NS_ASSERT, ns3::QosUtilsMapTidToAc(), ns3::Simulator::Schedule(), ns3::EdcaTxopN::SendDelbaFrame(), and timeout.

Referenced by DeaggregateAmpduAndReceive(), and ReceiveOk().

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void ns3::MacLow::ResetPhy ( void )

Remove WifiPhy associated with this MacLow.

Definition at line 436 of file mac-low.cc.

References m_phy, ns3::MakeNullCallback(), RemovePhyMacLowListener(), ns3::WifiPhy::SetReceiveErrorCallback(), and ns3::WifiPhy::SetReceiveOkCallback().

Referenced by ns3::RegularWifiMac::ResetWifiPhy().

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void ns3::MacLow::RxCompleteBufferedPacketsUntilFirstLost	(	Mac48Address	originator,
		uint8_t	tid
	)

private

Parameters

originator	Address of peer participating in Block Ack mechanism.
tid	TID for which Block Ack was created.

This method is typically invoked when a MPDU with ack policy subfield set to Normal Ack is received and a block ack agreement for that packet exists. This happens when the originator of block ack has only few MPDUs to send. All completed MSDUs starting with starting sequence number of block ack agreement are forward up to WifiMac until there is an incomplete or missing MSDU. See section 9.10.4 in IEEE 802.11 standard for more details.

Definition at line 2367 of file mac-low.cc.

References m_bAckAgreements, and m_rxCallback.

Referenced by DestroyBlockAckAgreement(), ReceiveMpdu(), ReceiveOk(), and SendBlockAckAfterBlockAckRequest().

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void ns3::MacLow::RxCompleteBufferedPacketsWithSmallerSequence	(	uint16_t	seq,
		Mac48Address	originator,
		uint8_t	tid
	)

private

Parameters

originator	Address of peer participating in Block Ack mechanism.
tid	TID for which Block Ack was created.
seq	Starting sequence control

This function forward up all completed "old" packets with sequence number smaller than seq. All comparison are performed circularly mod 4096.

Definition at line 2304 of file mac-low.cc.

References m_bAckAgreements, m_rxCallback, and ns3::QosUtilsMapSeqControlToUniqueInteger().

Referenced by DestroyBlockAckAgreement(), ReceiveMpdu(), ReceiveOk(), and SendBlockAckAfterBlockAckRequest().

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void ns3::MacLow::SendAckAfterData	(	Mac48Address	source,
		Time	duration,
		WifiMode	dataTxMode,
		double	dataSnr
	)

private

Send ACK after receiving DATA.

Parameters

source
duration
dataTxMode
dataSnr

Definition at line 2133 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), AddWifiMacTrailer(), ForwardDown(), GetAckDuration(), GetAckTxVector(), GetSifs(), ns3::Time::IsPositive(), NS_ASSERT_MSG, NS_LOG_FUNCTION, ns3::SnrTag::Set(), ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_ACK.

Referenced by ReceiveOk().

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void ns3::MacLow::SendBlockAckAfterAmpdu	(	uint8_t	tid,
		Mac48Address	originator,
		Time	duration,
		WifiTxVector	blockAckReqTxVector,
		double	rxSnr
	)

private

Invoked after an A-MPDU has been received.

Looks for corresponding block ack agreement and creates block ack bitmap on a received packets basis.

Parameters

tid	the Traffic ID
originator	the originator MAC address
duration	the remaining NAV duration
blockAckReqTxVector	the transmit vector
rxSnr	the receive SNR

Definition at line 2457 of file mac-low.cc.

References ns3::Time::As(), ns3::COMPRESSED_BLOCK_ACK, ns3::WifiTxVector::GetMode(), ns3::WifiPhy::IsStateRx(), ns3::WifiPhy::IsStateTx(), m_bAckAgreements, m_bAckCaches, m_phy, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Time::S, and SendBlockAckResponse().

Referenced by DeaggregateAmpduAndReceive().

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void ns3::MacLow::SendBlockAckAfterBlockAckRequest	(	const CtrlBAckRequestHeader	reqHdr,
		Mac48Address	originator,
		Time	duration,
		WifiMode	blockAckReqTxMode,
		double	rxSnr
	)

private

Invoked after that a block ack request has been received.

Looks for corresponding block ack agreement and creates block ack bitmap on a received packets basis.

Parameters

reqHdr
originator
duration
blockAckReqTxMode
rxSnr

Definition at line 2487 of file mac-low.cc.

References ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::CtrlBAckRequestHeader::GetStartingSequence(), ns3::CtrlBAckRequestHeader::GetStartingSequenceControl(), ns3::CtrlBAckRequestHeader::GetTidInfo(), ns3::WifiRemoteStationManager::HasHtSupported(), ns3::WifiRemoteStationManager::HasVhtSupported(), ns3::CtrlBAckRequestHeader::IsBasic(), ns3::CtrlBAckRequestHeader::IsCompressed(), ns3::CtrlBAckRequestHeader::IsMultiTid(), m_bAckAgreements, m_bAckCaches, m_stationManager, NS_ASSERT, NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::QosUtilsIsOldPacket(), RxCompleteBufferedPacketsUntilFirstLost(), RxCompleteBufferedPacketsWithSmallerSequence(), SendBlockAckResponse(), ns3::CtrlBAckResponseHeader::SetStartingSequence(), ns3::CtrlBAckResponseHeader::SetTidInfo(), and ns3::CtrlBAckResponseHeader::SetType().

Referenced by ReceiveOk().

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void ns3::MacLow::SendBlockAckResponse	(	const CtrlBAckResponseHeader *	blockAck,
		Mac48Address	originator,
		bool	immediate,
		Time	duration,
		WifiMode	blockAckReqTxMode,
		double	rxSnr
	)

private

This method creates block ack frame with header equals to blockAck and start its transmission.

Parameters

blockAck
originator
immediate
duration
blockAckReqTxMode
rxSnr

Definition at line 2396 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), AddWifiMacTrailer(), ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::MacLowTransmissionParameters::DisableAck(), ns3::MacLowTransmissionParameters::DisableNextData(), ns3::MacLowTransmissionParameters::EnableAck(), ForwardDown(), GetAckDuration(), GetAddress(), GetBlockAckDuration(), GetBlockAckTxVector(), GetSifs(), ns3::CtrlBAckResponseHeader::IsBasic(), ns3::CtrlBAckResponseHeader::IsCompressed(), ns3::CtrlBAckResponseHeader::IsMultiTid(), ns3::Time::IsPositive(), m_txParams, NS_ASSERT, NS_FATAL_ERROR, NS_LOG_FUNCTION, ns3::SnrTag::Set(), ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetAddr2(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), StartDataTxTimers(), and ns3::WIFI_MAC_CTL_BACKRESP.

Referenced by SendBlockAckAfterAmpdu(), and SendBlockAckAfterBlockAckRequest().

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void ns3::MacLow::SendCtsAfterRts	(	Mac48Address	source,
		Time	duration,
		WifiTxVector	rtsTxVector,
		double	rtsSnr
	)

private

Send CTS after receiving RTS.

Parameters

source
duration
rtsTxVector
rtsSnr

Definition at line 1985 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), AddWifiMacTrailer(), ForwardDown(), GetCtsDuration(), GetCtsTxVector(), ns3::WifiTxVector::GetMode(), GetSifs(), ns3::Time::IsPositive(), NS_ASSERT, NS_LOG_FUNCTION, ns3::SnrTag::Set(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by ReceiveOk().

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void ns3::MacLow::SendCtsToSelf ( void )

private

Send CTS for a CTS-to-self mechanism.

Definition at line 1906 of file mac-low.cc.

References ns3::Packet::AddHeader(), AddWifiMacTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), GetCtsSize(), ns3::MacLowTransmissionParameters::GetDurationId(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetRtsTxVector(), GetSifs(), GetSize(), ns3::MacLowTransmissionParameters::HasDurationId(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), m_ampdu, m_currentHdr, m_currentPacket, m_currentTxVector, m_phy, m_self, m_sendDataEvent, m_txParams, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NS_ASSERT, ns3::Simulator::Schedule(), ns3::Seconds(), SendDataAfterCts(), ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), and ns3::WIFI_MAC_CTL_CTS.

Referenced by StartTransmission().

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void ns3::MacLow::SendDataAfterCts	(	Mac48Address	source,
		Time	duration
	)

private

Send DATA after receiving CTS.

Parameters

source
duration

Definition at line 2017 of file mac-low.cc.

References ns3::Packet::AddHeader(), AddWifiMacTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ns3::Packet::Copy(), ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetRifs(), ns3::WifiRemoteStationManager::GetRifsPermitted(), GetSifs(), GetSize(), ns3::GetTid(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::Time::IsPositive(), ns3::WifiMacHeader::IsQosData(), m_aggregateQueue, m_ampdu, m_currentHdr, m_currentPacket, m_currentTxVector, m_edca, m_phy, m_stationManager, m_txPackets, m_txParams, max, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NS_ASSERT, NS_LOG_FUNCTION, ns3::QosUtilsMapTidToAc(), ns3::Seconds(), ns3::WifiMacHeader::SetDuration(), and StartDataTxTimers().

Referenced by ReceiveOk(), and SendCtsToSelf().

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void ns3::MacLow::SendDataPacket ( void )

private

Send DATA packet, which can be DATA-ACK or RTS-CTS-DATA-ACK transaction.

Definition at line 1828 of file mac-low.cc.

References ns3::Packet::AddHeader(), AddWifiMacTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ns3::Packet::Copy(), ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), ns3::MacLowTransmissionParameters::GetDurationId(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetRifs(), ns3::WifiRemoteStationManager::GetRifsPermitted(), GetSifs(), ns3::MacLowTransmissionParameters::HasDurationId(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::WifiMacHeader::IsQosData(), m_ampdu, m_currentHdr, m_currentPacket, m_currentTxVector, m_phy, m_stationManager, m_txParams, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NS_ASSERT, NS_LOG_FUNCTION, ns3::Seconds(), ns3::WifiMacHeader::SetDuration(), and StartDataTxTimers().

Referenced by StartTransmission().

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void ns3::MacLow::SendMpdu	(	Ptr< const Packet >	packet,
		WifiTxVector	txVector,
		MpduType	mpdutype
	)

private

Forward the MPDU down to WifiPhy for transmission.

This is called for each MPDU when MPDU aggregation is used.

Parameters

packet	the packet
txVector	the transmit vector
mpdutype	the MPDU type

Definition at line 1593 of file mac-low.cc.

References m_phy, NS_LOG_DEBUG, and ns3::WifiPhy::SendPacket().

Referenced by ForwardDown().

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void ns3::MacLow::SendRtsForPacket ( void )

private

Send RTS to begin RTS-CTS-DATA-ACK transaction.

Definition at line 1685 of file mac-low.cc.

Referenced by StartTransmission().

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void ns3::MacLow::SetAckTimeout ( Time ackTimeout )

Set ACK timeout of this MacLow.

Parameters

ackTimeout ACK timeout of this MacLow

Definition at line 457 of file mac-low.cc.

References m_ackTimeout.

Referenced by ns3::RegularWifiMac::SetAckTimeout().

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void ns3::MacLow::SetAddress ( Mac48Address ad )

Set MAC address of this MacLow.

Parameters

ad	Mac48Address of this MacLow

Definition at line 451 of file mac-low.cc.

References m_self.

Referenced by AmpduAggregationTest::DoRun(), and ns3::RegularWifiMac::SetAddress().

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void ns3::MacLow::SetBasicBlockAckTimeout ( Time blockAckTimeout )

Set Basic Block ACK timeout of this MacLow.

Parameters

blockAckTimeout Basic Block ACK timeout of this MacLow

Definition at line 463 of file mac-low.cc.

References m_basicBlockAckTimeout.

Referenced by ns3::RegularWifiMac::SetBasicBlockAckTimeout().

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void ns3::MacLow::SetBssid ( Mac48Address ad )

Set the Basic Service Set Identification.

Parameters

ad the BSSID

Definition at line 517 of file mac-low.cc.

References m_bssid.

Referenced by ns3::RegularWifiMac::SetBssid().

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void ns3::MacLow::SetCompressedBlockAckTimeout ( Time blockAckTimeout )

Set Compressed Block ACK timeout of this MacLow.

Parameters

blockAckTimeout Compressed Block ACK timeout of this MacLow

Definition at line 469 of file mac-low.cc.

References m_compressedBlockAckTimeout.

Referenced by ns3::RegularWifiMac::SetCompressedBlockAckTimeout().

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void ns3::MacLow::SetCtsTimeout ( Time ctsTimeout )

Set CTS timeout of this MacLow.

Parameters

ctsTimeout CTS timeout of this MacLow

Definition at line 487 of file mac-low.cc.

References m_ctsTimeout.

Referenced by ns3::RegularWifiMac::SetCtsTimeout().

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void ns3::MacLow::SetCtsToSelfSupported ( bool enable )

Enable or disable CTS-to-self capability.

Parameters

enable Enable or disable CTS-to-self capability

Definition at line 475 of file mac-low.cc.

References m_ctsToSelfSupported.

Referenced by ns3::RegularWifiMac::SetCtsToSelfSupported().

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void ns3::MacLow::SetPhy ( const Ptr< WifiPhy > phy )

Set up WifiPhy associated with this MacLow.

Parameters

phy	WifiPhy associated with this MacLow

Definition at line 421 of file mac-low.cc.

References DeaggregateAmpduAndReceive(), m_phy, ns3::MakeCallback(), third::phy, ReceiveError(), ns3::WifiPhy::SetReceiveErrorCallback(), ns3::WifiPhy::SetReceiveOkCallback(), and SetupPhyMacLowListener().

Referenced by AmpduAggregationTest::DoRun(), TwoLevelAggregationTest::DoRun(), and ns3::RegularWifiMac::SetWifiPhy().

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void ns3::MacLow::SetPifs ( Time pifs )

Set PCF Interframe Space (PIFS) of this MacLow.

Parameters

pifs	PIFS of this MacLow

Definition at line 505 of file mac-low.cc.

References m_pifs.

Referenced by ns3::RegularWifiMac::SetPifs().

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void ns3::MacLow::SetPromisc ( void )

Enable promiscuous mode.

Definition at line 523 of file mac-low.cc.

References m_promisc.

Referenced by ns3::RegularWifiMac::SetPromisc().

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void ns3::MacLow::SetRifs ( Time rifs )

Set Reduced Interframe Space (RIFS) of this MacLow.

Parameters

rifs	RIFS of this MacLow

Definition at line 511 of file mac-low.cc.

References m_rifs.

Referenced by ns3::RegularWifiMac::SetRifs().

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void ns3::MacLow::SetRxCallback ( Callback< void, Ptr< Packet >, const WifiMacHeader * > callback )

Parameters

callback the callback which receives every incoming packet.

This callback typically forwards incoming packets to an instance of ns3::MacRxMiddle.

Definition at line 597 of file mac-low.cc.

References m_rxCallback.

Referenced by ns3::OcbWifiMac::EnableForWave(), and ns3::RegularWifiMac::RegularWifiMac().

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void ns3::MacLow::SetSifs ( Time sifs )

Set Short Interframe Space (SIFS) of this MacLow.

Parameters

sifs	SIFS of this MacLow

Definition at line 493 of file mac-low.cc.

References m_sifs.

Referenced by ns3::RegularWifiMac::SetSifs().

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void ns3::MacLow::SetSlotTime ( Time slotTime )

Set slot duration of this MacLow.

Parameters

slotTime slot duration of this MacLow

Definition at line 499 of file mac-low.cc.

References m_slotTime.

Referenced by ns3::RegularWifiMac::SetSlot().

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void ns3::MacLow::SetupPhyMacLowListener ( const Ptr< WifiPhy > phy )

private

Set up WifiPhy listener for this MacLow.

Parameters

phy	the WifiPhy this MacLow is connected to

Definition at line 307 of file mac-low.cc.

References m_phyMacLowListener, and ns3::WifiPhy::RegisterListener().

Referenced by SetPhy().

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void ns3::MacLow::SetWifiRemoteStationManager ( const Ptr< WifiRemoteStationManager > manager )

Set up WifiRemoteStationManager associated with this MacLow.

Parameters

manager WifiRemoteStationManager associated with this MacLow

Definition at line 445 of file mac-low.cc.

References m_stationManager.

Referenced by AmpduAggregationTest::DoRun(), TwoLevelAggregationTest::DoRun(), and ns3::RegularWifiMac::SetWifiRemoteStationManager().

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void ns3::MacLow::StartDataTxTimers ( WifiTxVector dataTxVector )

private

Start a DATA timer by scheduling appropriate ACK timeout.

Parameters

dataTxVector

Definition at line 1754 of file mac-low.cc.

References BlockAckTimeout(), ns3::WifiPhy::CalculateTxDuration(), EndTxNoAck(), FastAckTimeout(), GetAckTimeout(), GetBasicBlockAckTimeout(), GetCompressedBlockAckTimeout(), ns3::WifiPhy::GetFrequency(), GetPifs(), GetRifs(), ns3::WifiRemoteStationManager::GetRifsPermitted(), GetSifs(), GetSize(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), ns3::WifiMacHeader::IsQosBlockAck(), ns3::WifiMacHeader::IsQosData(), m_ampdu, m_blockAckTimeoutEvent, m_currentDca, m_currentHdr, m_currentPacket, m_fastAckTimeoutEvent, m_normalAckTimeoutEvent, m_phy, m_stationManager, m_superFastAckTimeoutEvent, m_txParams, m_waitIfsEvent, ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), ns3::MacLowTransmissionParameters::MustWaitFastAck(), ns3::MacLowTransmissionParameters::MustWaitNormalAck(), ns3::MacLowTransmissionParameters::MustWaitSuperFastAck(), NormalAckTimeout(), NotifyAckTimeoutStartNow(), NS_ASSERT, ns3::Simulator::Schedule(), SuperFastAckTimeout(), WaitIfsAfterEndTxFragment(), and WaitIfsAfterEndTxPacket().

Referenced by SendBlockAckResponse(), SendDataAfterCts(), and SendDataPacket().

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void ns3::MacLow::StartTransmission	(	Ptr< const Packet >	packet,
		const WifiMacHeader *	hdr,
		MacLowTransmissionParameters	parameters,
		Ptr< DcaTxop >	dca
	)

virtual

Parameters

packet	packet to send
hdr	802.11 header for packet to send
parameters	the transmission parameters to use for this packet.
dca	pointer to the calling DcaTxop.

Start the transmission of the input packet and notify the listener of transmission events.

Reimplemented in ns3::WaveMacLow.

Definition at line 628 of file mac-low.cc.

References ns3::Packet::AddHeader(), AddWifiMacTrailer(), CancelAllEvents(), ns3::Packet::Copy(), ns3::Copy(), ns3::MacLowTransmissionParameters::DisableRts(), ns3::MacLowTransmissionParameters::EnableAck(), ns3::MacLowTransmissionParameters::EnableCompressedBlockAck(), ns3::MacLowTransmissionParameters::EnableRts(), ns3::WifiMacHeader::GetAddr1(), GetDataTxVector(), ns3::AmpduTag::GetRemainingNbOfMpdus(), GetSize(), ns3::GetTid(), ns3::WifiRemoteStationManager::GetUseNonErpProtection(), IsAmpdu(), ns3::WifiMacHeader::IsBlockAck(), ns3::WifiMacHeader::IsBlockAckReq(), ns3::WifiMacHeader::IsMgt(), ns3::WifiMacHeader::IsQosData(), ns3::WifiPhy::IsStateTx(), m_aggregateQueue, m_ampdu, m_ctsToSelfSupported, m_currentDca, m_currentHdr, m_currentPacket, m_currentTxVector, m_edca, m_phy, m_stationManager, m_txPackets, m_txParams, ns3::MacLowTransmissionParameters::MustSendRts(), NeedCtsToSelf(), NeedRts(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Packet::PeekPacketTag(), ns3::QosUtilsMapTidToAc(), ns3::Packet::RemovePacketTag(), SendCtsToSelf(), SendDataPacket(), and SendRtsForPacket().

Referenced by ns3::EdcaTxopN::NotifyAccessGranted(), ns3::DcaTxop::NotifyAccessGranted(), ns3::EdcaTxopN::SendAddBaRequest(), ns3::EdcaTxopN::SendBlockAckRequest(), ns3::DcaTxop::StartNextFragment(), ns3::EdcaTxopN::StartNextPacket(), and ns3::WaveMacLow::StartTransmission().

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bool ns3::MacLow::StopMpduAggregation	(	Ptr< const Packet >	peekedPacket,
		WifiMacHeader	peekedHdr,
		Ptr< Packet >	aggregatedPacket,
		uint16_t	size
	)		const

Parameters

peekedPacket	the packet to be aggregated
peekedHdr	the WifiMacHeader for the packet.
aggregatedPacket	the current A-MPDU
size	the size of a piggybacked block ack request

Returns: false if the given packet can be added to an A-MPDU, true otherwise

This function decides if a given packet can be added to an A-MPDU or not

Definition at line 2662 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::Packet::GetSize(), ns3::WifiMacHeader::GetSize(), ns3::GetTid(), m_currentTxVector, m_edca, m_phy, ns3::MicroSeconds(), NS_LOG_DEBUG, ns3::QosUtilsMapTidToAc(), and ns3::WIFI_MAC_FCS_LENGTH.

Referenced by AggregateToAmpdu(), and PerformMsduAggregation().

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bool ns3::MacLow::StoreMpduIfNeeded	(	Ptr< Packet >	packet,
		WifiMacHeader	hdr
	)

private

Parameters

packet	the packet
hdr	the header

Returns: true if the MPDU stored

This method checks if exists a valid established block ack agreement. If there is, store the packet without pass it up to WifiMac. The packet is buffered in order of increasing sequence control field. All comparison are performed circularly modulo 2^12.

Definition at line 2216 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetQosTid(), ns3::WifiMacHeader::GetSequenceControl(), m_bAckAgreements, m_bAckCaches, NS_ASSERT, ns3::QosUtilsMapSeqControlToUniqueInteger(), and ns3::Packet::RemoveTrailer().

Referenced by ReceiveMpdu().

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void ns3::MacLow::SuperFastAckTimeout ( void )

private

Event handler when super fast ACK timeout occurs.

Definition at line 1666 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiPhy::IsStateIdle(), m_currentDca, m_currentHdr, m_phy, m_stationManager, NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::WaitIfsAfterEndTxFragment ( void )

private

Event handler that is usually scheduled to fired at the appropriate time after completing transmissions.

Definition at line 2103 of file mac-low.cc.

References m_currentDca.

Referenced by ReceiveOk(), and StartDataTxTimers().

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void ns3::MacLow::WaitIfsAfterEndTxPacket ( void )

private

Event handler that is usually scheduled to fired at the appropriate time after sending a packet.

Definition at line 2109 of file mac-low.cc.

References m_currentDca.

Referenced by ReceiveOk(), and StartDataTxTimers().

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Friends And Related Function Documentation

friend class ::AmpduAggregationTest

friend

Allow test cases to access private members.

Definition at line 250 of file mac-low.h.

friend class ::TwoLevelAggregationTest

friend

Allow test cases to access private members.

Definition at line 248 of file mac-low.h.

Member Data Documentation

Time ns3::MacLow::m_ackTimeout

private

ACK timeout duration.

Definition at line 1138 of file mac-low.h.

Referenced by GetAckTimeout(), and SetAckTimeout().

Ptr<WifiMacQueue> ns3::MacLow::m_aggregateQueue[8]

private

Queues per TID used for MPDU aggregation.

Definition at line 1177 of file mac-low.h.

Referenced by AggregateToAmpdu(), BlockAckTimeout(), DoDispose(), AmpduAggregationTest::DoRun(), FlushAggregateQueue(), ForwardDown(), MacLow(), SendDataAfterCts(), and StartTransmission().

bool ns3::MacLow::m_ampdu

private

Flag if the current transmission involves an A-MPDU.

Definition at line 1151 of file mac-low.h.

Referenced by BlockAckTimeout(), CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), CtsTimeout(), DoDispose(), ForwardDown(), NormalAckTimeout(), ReceiveOk(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartDataTxTimers(), and StartTransmission().

Agreements ns3::MacLow::m_bAckAgreements

private

block ack agreements

Definition at line 1170 of file mac-low.h.

Referenced by CreateBlockAckAgreement(), DeaggregateAmpduAndReceive(), DestroyBlockAckAgreement(), ReceiveMpdu(), ReceiveOk(), RxCompleteBufferedPacketsUntilFirstLost(), RxCompleteBufferedPacketsWithSmallerSequence(), SendBlockAckAfterAmpdu(), SendBlockAckAfterBlockAckRequest(), and StoreMpduIfNeeded().

BlockAckCaches ns3::MacLow::m_bAckCaches

private

block ack caches

Definition at line 1171 of file mac-low.h.

Referenced by CreateBlockAckAgreement(), DestroyBlockAckAgreement(), ReceiveOk(), SendBlockAckAfterAmpdu(), SendBlockAckAfterBlockAckRequest(), and StoreMpduIfNeeded().

Time ns3::MacLow::m_basicBlockAckTimeout

private

Basic block ACK timeout duration.

Definition at line 1139 of file mac-low.h.

Referenced by GetBasicBlockAckTimeout(), and SetBasicBlockAckTimeout().

EventId ns3::MacLow::m_blockAckTimeoutEvent

private

Block ACK timeout event.

Definition at line 1122 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and StartDataTxTimers().

Mac48Address ns3::MacLow::m_bssid

private

BSSID address (Mac48Address)

Definition at line 1137 of file mac-low.h.

Referenced by GetBssid(), NotifyNav(), and SetBssid().

Time ns3::MacLow::m_compressedBlockAckTimeout

private

Compressed block ACK timeout duration.

Definition at line 1140 of file mac-low.h.

Referenced by GetCompressedBlockAckTimeout(), and SetCompressedBlockAckTimeout().

Time ns3::MacLow::m_ctsTimeout

private

CTS timeout duration.

Definition at line 1141 of file mac-low.h.

Referenced by GetCtsTimeout(), and SetCtsTimeout().

EventId ns3::MacLow::m_ctsTimeoutEvent

private

CTS timeout event.

Definition at line 1123 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and SendRtsForPacket().

bool ns3::MacLow::m_ctsToSelfSupported

private

Flag whether CTS-to-self is supported.

Definition at line 1176 of file mac-low.h.

Referenced by GetCtsToSelfSupported(), SetCtsToSelfSupported(), and StartTransmission().

Ptr<DcaTxop> ns3::MacLow::m_currentDca

private

Current DCA.

Definition at line 1133 of file mac-low.h.

Referenced by BlockAckTimeout(), CancelAllEvents(), CtsTimeout(), EndTxNoAck(), FastAckFailedTimeout(), FastAckTimeout(), NormalAckTimeout(), NotifySleepNow(), NotifySwitchingStartNow(), ReceiveOk(), StartDataTxTimers(), StartTransmission(), SuperFastAckTimeout(), WaitIfsAfterEndTxFragment(), and WaitIfsAfterEndTxPacket().

WifiMacHeader ns3::MacLow::m_currentHdr

private

Header of the current transmitted packet.

Definition at line 1132 of file mac-low.h.

Referenced by AggregateToAmpdu(), BlockAckTimeout(), CtsTimeout(), AmpduAggregationTest::DoRun(), TwoLevelAggregationTest::DoRun(), FastAckTimeout(), ForwardDown(), NeedCtsToSelf(), NeedRts(), NormalAckTimeout(), ReceiveOk(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartDataTxTimers(), StartTransmission(), and SuperFastAckTimeout().

Ptr<Packet> ns3::MacLow::m_currentPacket

private

Current packet transmitted/to be transmitted.

Definition at line 1131 of file mac-low.h.

Referenced by AggregateToAmpdu(), BlockAckTimeout(), AmpduAggregationTest::DoRun(), TwoLevelAggregationTest::DoRun(), IsAmpdu(), NeedCtsToSelf(), NeedRts(), NormalAckTimeout(), NotifySleepNow(), NotifySwitchingStartNow(), ReceiveOk(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartDataTxTimers(), and StartTransmission().

WifiTxVector ns3::MacLow::m_currentTxVector

private

TXVECTOR used for the current packet transmission.

Definition at line 1179 of file mac-low.h.

Referenced by AmpduAggregationTest::DoRun(), TwoLevelAggregationTest::DoRun(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartTransmission(), and StopMpduAggregation().

DcfManagers ns3::MacLow::m_dcfManagers

private

List of DcfManager.

Definition at line 1116 of file mac-low.h.

Referenced by DoNavResetNow(), DoNavStartNow(), NotifyAckTimeoutResetNow(), NotifyAckTimeoutStartNow(), NotifyCtsTimeoutResetNow(), NotifyCtsTimeoutStartNow(), and RegisterDcf().

QueueEdcas ns3::MacLow::m_edca

private

EDCA queues.

Definition at line 1174 of file mac-low.h.

Referenced by AggregateToAmpdu(), CreateBlockAckAgreement(), ForwardDown(), PerformMsduAggregation(), ReceiveOk(), RegisterEdcaForAc(), ResetBlockAckInactivityTimerIfNeeded(), SendDataAfterCts(), StartTransmission(), and StopMpduAggregation().

EventId ns3::MacLow::m_endTxNoAckEvent

private

Event for finishing transmission that does not require ACK.

Definition at line 1128 of file mac-low.h.

Referenced by CancelAllEvents(), and DoDispose().

EventId ns3::MacLow::m_fastAckFailedTimeoutEvent

private

Fast ACK failed timeout event.

Definition at line 1121 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), and ReceiveError().

EventId ns3::MacLow::m_fastAckTimeoutEvent

private

Fast ACK timeout event.

Definition at line 1119 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and StartDataTxTimers().

Time ns3::MacLow::m_lastNavDuration

private

The duration of the latest NAV.

Definition at line 1148 of file mac-low.h.

Referenced by DoNavResetNow(), DoNavStartNow(), IsNavZero(), NotifySleepNow(), and NotifySwitchingStartNow().

Time ns3::MacLow::m_lastNavStart

private

The time when the latest NAV started.

Definition at line 1147 of file mac-low.h.

Referenced by DoNavResetNow(), DoNavStartNow(), IsNavZero(), NotifyNav(), NotifySleepNow(), and NotifySwitchingStartNow().

WifiMacHeader ns3::MacLow::m_lastReceivedHdr

private

Header of the last received packet.

Definition at line 1134 of file mac-low.h.

Referenced by ReceiveOk().

EventId ns3::MacLow::m_navCounterResetCtsMissed

private

Event to reset NAV when CTS is not received.

Definition at line 1129 of file mac-low.h.

Referenced by NotifyNav(), NotifySleepNow(), and NotifySwitchingStartNow().

EventId ns3::MacLow::m_normalAckTimeoutEvent

private

Normal ACK timeout event.

Definition at line 1118 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and StartDataTxTimers().

Ptr<WifiPhy> ns3::MacLow::m_phy

private

Pointer to WifiPhy (actually send/receives frames)

Definition at line 1092 of file mac-low.h.

Referenced by CalculateOverallTxFragmentTime(), CalculateOverallTxTime(), CalculateTransmissionTime(), DoDispose(), FastAckTimeout(), ForwardDown(), GetAckDuration(), GetBlockAckDuration(), GetCtsDuration(), GetPhy(), NavCounterResetCtsMissed(), NotifyNav(), ResetPhy(), SendBlockAckAfterAmpdu(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendMpdu(), SendRtsForPacket(), SetPhy(), StartDataTxTimers(), StartTransmission(), StopMpduAggregation(), and SuperFastAckTimeout().

class PhyMacLowListener* ns3::MacLow::m_phyMacLowListener

private

Listener needed to monitor when a channel switching occurs.

Definition at line 1153 of file mac-low.h.

Referenced by DoDispose(), RemovePhyMacLowListener(), and SetupPhyMacLowListener().

Time ns3::MacLow::m_pifs

private

PCF Interframe Space (PIFS) duration.

Definition at line 1144 of file mac-low.h.

Referenced by GetPifs(), and SetPifs().

bool ns3::MacLow::m_promisc

private

Flag if the device is operating in promiscuous mode.

Definition at line 1150 of file mac-low.h.

Referenced by IsPromisc(), ReceiveOk(), and SetPromisc().

Time ns3::MacLow::m_rifs

private

Reduced Interframe Space (RIFS) duration.

Definition at line 1145 of file mac-low.h.

Referenced by GetRifs(), and SetRifs().

MacLowRxCallback ns3::MacLow::m_rxCallback

private

Callback to pass packet up.

Definition at line 1094 of file mac-low.h.

Referenced by ReceiveOk(), RxCompleteBufferedPacketsUntilFirstLost(), RxCompleteBufferedPacketsWithSmallerSequence(), and SetRxCallback().

Mac48Address ns3::MacLow::m_self

private

Address of this MacLow (Mac48Address)

Definition at line 1136 of file mac-low.h.

Referenced by DeaggregateAmpduAndReceive(), GetAddress(), NotifyNav(), ReceiveOk(), SendCtsToSelf(), SendRtsForPacket(), and SetAddress().

EventId ns3::MacLow::m_sendAckEvent

private

Event to send ACK.

Definition at line 1125 of file mac-low.h.

Referenced by CancelAllEvents(), DeaggregateAmpduAndReceive(), DoDispose(), and ReceiveOk().

EventId ns3::MacLow::m_sendCtsEvent

private

Event to send CTS.

Definition at line 1124 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), and ReceiveOk().

EventId ns3::MacLow::m_sendDataEvent

private

Event to send DATA.

Definition at line 1126 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and SendCtsToSelf().

Time ns3::MacLow::m_sifs

private

Short Interframe Space (SIFS) duration.

Definition at line 1142 of file mac-low.h.

Referenced by GetSifs(), and SetSifs().

Time ns3::MacLow::m_slotTime

private

Slot duration.

Definition at line 1143 of file mac-low.h.

Referenced by GetSlotTime(), and SetSlotTime().

Ptr<WifiRemoteStationManager> ns3::MacLow::m_stationManager

private

Pointer to WifiRemoteStationManager (rate control)

Definition at line 1093 of file mac-low.h.

Referenced by CtsTimeout(), DoDispose(), FastAckTimeout(), GetAckTxVector(), GetBlockAckTxVector(), GetCtsToSelfTxVector(), GetCtsTxVector(), GetDataTxVector(), GetRtsTxVector(), NeedCtsToSelf(), NeedRts(), NormalAckTimeout(), NotifySwitchingStartNow(), ReceiveMpdu(), ReceiveOk(), SendBlockAckAfterBlockAckRequest(), SendDataAfterCts(), SendDataPacket(), SetWifiRemoteStationManager(), StartDataTxTimers(), StartTransmission(), and SuperFastAckTimeout().

EventId ns3::MacLow::m_superFastAckTimeoutEvent

private

Super fast ACK timeout event.

Definition at line 1120 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and StartDataTxTimers().

std::vector<Item> ns3::MacLow::m_txPackets[8]

private

Contain temporary items to be sent with the next A-MPDU transmission for a given TID, once RTS/CTS exchange has succeeded.

Definition at line 1178 of file mac-low.h.

Referenced by FlushAggregateQueue(), InsertInTxQueue(), SendDataAfterCts(), and StartTransmission().

MacLowTransmissionParameters ns3::MacLow::m_txParams

private

Transmission parameters of the current packet.

Definition at line 1135 of file mac-low.h.

Referenced by AggregateToAmpdu(), ReceiveError(), ReceiveOk(), SendBlockAckResponse(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartDataTxTimers(), and StartTransmission().

EventId ns3::MacLow::m_waitIfsEvent

private

Wait for IFS event.

Definition at line 1127 of file mac-low.h.

Referenced by CancelAllEvents(), DoDispose(), ReceiveOk(), and StartDataTxTimers().

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

src/wifi/model/mac-low.h
src/wifi/model/mac-low.cc

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