ns3::MacLow Class Reference

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. 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	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, WifiPreamble preamble)
void	DestroyBlockAckAgreement (Mac48Address originator, uint8_t tid)
void	FlushAggregateQueue (void)
	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...
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< const Packet > packet, double rxSnr)
void	ReceiveOk (Ptr< Packet > packet, double rxSnr, WifiTxVector txVector, WifiPreamble preamble, bool ampduSubframe)
void	RegisterBlockAckListenerForAc (enum AcIndex ac, MacLowAggregationCapableTransmissionListener *listener)
void	RegisterDcfListener (MacLowDcfListener *listener)
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	SetMpduAggregator (Ptr< MpduAggregator > aggregator)
	Set up MpduAggregator associated with this MacLow. More...
void	SetPhy (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 (Ptr< WifiRemoteStationManager > manager)
	Set up WifiRemoteStationManager associated with this MacLow. More...
virtual void	StartTransmission (Ptr< const Packet > packet, const WifiMacHeader *hdr, MacLowTransmissionParameters parameters, MacLowTransmissionListener *listener)
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
	Implement the GetInstanceTypeId method defined in ObjectBase. 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. More...
void	Initialize (void)
	Invoke DoInitialize on all Objects aggregated to this one. More...
Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Constructor. More...
	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor. More...
uint32_t	GetReferenceCount (void) const
	Get the reference count of the object. More...
SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment. More...
void	Ref (void) const
	Increment the reference count. More...
void	Unref (void) const
	Decrement the reference count. More...
Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor. More...
void	GetAttribute (std::string name, AttributeValue &value) const
	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...

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

Private Types
typedef std::pair< Mac48Address, uint8_t >	AgreementKey
typedef std::map< AgreementKey, AgreementValue >	Agreements
typedef std::map< AgreementKey, AgreementValue >::iterator	AgreementsI
typedef std::pair< BlockAckAgreement, std::list< BufferedPacket > >	AgreementValue
typedef std::map< AgreementKey, BlockAckCache >	BlockAckCaches
typedef std::map< AgreementKey, BlockAckCache >::iterator	BlockAckCachesI
typedef std::pair< Ptr< Packet >, WifiMacHeader >	BufferedPacket
typedef std::list< BufferedPacket >::iterator	BufferedPacketI
typedef std::vector< MacLowDcfListener * >	DcfListeners
	typedef for a list of MacLowDcfListener. More...
typedef std::vector< MacLowDcfListener * >::const_iterator	DcfListenersCI
	typedef for an iterator for a list of MacLowDcfListener. More...
typedef std::map< AcIndex, MacLowAggregationCapableTransmissionListener * >	QueueListeners

Private Member Functions
void	BlockAckTimeout (void)
	Event handler when block ACK timeout occurs. More...
Time	CalculateOverallTxTime (Ptr< const Packet > packet, const WifiMacHeader *hdr, const MacLowTransmissionParameters &params) const
void	CancelAllEvents (void)
	Cancel all scheduled events. More...
void	CtsTimeout (void)
	Event handler when CTS timeout occurs. More...
virtual 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, WifiPreamble preamble)
	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...
uint32_t	GetAckSize (void) const
	Return the total ACK size (including FCS trailer). 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, enum 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...
uint32_t	GetBlockAckSize (enum BlockAckType type) const
	Return the total Block ACK size (including FCS trailer). 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...
uint32_t	GetCtsSize (void) const
	Return the total CTS size (including FCS trailer). 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...
uint32_t	GetRtsSize (void) const
	Return the total RTS size (including FCS trailer). More...
WifiTxVector	GetRtsTxVector (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
	Return a TXVECTOR for the RTS frame given the destination. More...
uint32_t	GetSize (Ptr< const Packet > packet, const WifiMacHeader *hdr) const
	Return the total size of the packet after WifiMacHeader and FCS trailer have been added. More...
uint8_t	GetTid (Ptr< const Packet > packet, const WifiMacHeader hdr) const
void	InsertInTxQueue (Ptr< const Packet > packet, const WifiMacHeader &hdr, Time tStamp)
	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	IsInWindow (uint16_t seq, uint16_t winstart, uint16_t winsize)
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)
	Check if CTS-to-self mechanism should be used for the current packet. More...
void	NormalAckTimeout (void)
	Event handler when normal ACK timeout occurs. More...
void	NotifyAckTimeoutResetNow ()
	Notify DcfManager (via DcfListener) that ACK timer should be resetted. More...
void	NotifyAckTimeoutStartNow (Time duration)
	Notify DcfManager (via DcfListener) that ACK timer should be started for the given duration. More...
void	NotifyCtsTimeoutResetNow ()
	Notify DcfManager (via DcfListener) that CTS timer should be resetted. More...
void	NotifyCtsTimeoutStartNow (Time duration)
	Notify DcfManager (via DcfListener) that CTS timer should be started for the given duration. More...
void	NotifyNav (Ptr< const Packet > packet, const WifiMacHeader &hdr, WifiPreamble preamble)
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)
	This method updates the reorder buffer and the scoreboard when an MPDU is received in an HT station and sotres the MPDU if needed when an MPDU is received in an non-HT Station (implements HT immediate block Ack) More...
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)
	Invoked after an A-MPDU has been received. More...
void	SendBlockAckAfterBlockAckRequest (const CtrlBAckRequestHeader reqHdr, Mac48Address originator, Time duration, WifiMode blockAckReqTxMode)
	Invoked after that a block ack request has been received. More...
void	SendBlockAckResponse (const CtrlBAckResponseHeader *blockAck, Mac48Address originator, bool immediate, Time duration, WifiMode blockAckReqTxMode)
	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	SendPacket (Ptr< const Packet > packet, WifiTxVector txVector, WifiPreamble preamble, uint8_t packetType)
	Forward the packet down to WifiPhy for transmission. More...
void	SendRtsForPacket (void)
	Send RTS to begin RTS-CTS-DATA-ACK transaction. More...
void	SetupPhyMacLowListener (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)
	This method checks if exists a valid established block ack agreement. More...
void	SuperFastAckTimeout (void)
	Event handler when super fast ACK timeout occurs. More...
void	WaitSifsAfterEndTx (void)
	Event handler that is usually scheduled to fired at the appropriate time after completing transmissions. More...

Private Attributes
Time	m_ackTimeout
	ACK timeout duration. More...
Ptr< WifiMacQueue >	m_aggregateQueue
	Queue used for MPDU aggregation. More...
bool	m_ampdu
	Flag if the current transmission involves an A-MPDU. More...
Agreements	m_bAckAgreements
BlockAckCaches	m_bAckCaches
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...
WifiMacHeader	m_currentHdr
	Header of the current packet. More...
Ptr< Packet >	m_currentPacket
	Current packet transmitted/to be transmitted. More...
WifiTxVector	m_currentTxVector
	TXVECTOR used for the current packet transmission. More...
DcfListeners	m_dcfListeners
	List of MacLowDcfListener (pass events to Dcf) More...
QueueListeners	m_edcaListeners
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...
MacLowTransmissionListener *	m_listener
	Transmission listener for the current packet. More...
Ptr< MpduAggregator >	m_mpduAggregator
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...
bool	m_receivedAtLeastOneMpdu
	Flag whether an MPDU has already been successfully received while receiving an A-MPDU. 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...
uint8_t	m_sentMpdus
	Number of transmitted MPDUs in an A-MPDU that have not been acknowledged yet. 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
	Contain temporary items to be sent with the next A-MPDU transmission, once RTS/CTS exchange has succeeded. More...
MacLowTransmissionParameters	m_txParams
	Transmission parameters of the current packet. More...
EventId	m_waitRifsEvent
	Wait for RIFS event. More...
EventId	m_waitSifsEvent
	Wait for SIFS event. More...

Friends
class	::TwoLevelAggregationTest

Additional Inherited Members
Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId (void)
	Register this type. More...
Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void	Cleanup (void)
	Noop. More...
Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...
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.

Definition at line 486 of file mac-low.h.

Member Typedef Documentation

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

private

Definition at line 1345 of file mac-low.h.

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

private

Definition at line 1348 of file mac-low.h.

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

private

Definition at line 1349 of file mac-low.h.

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

private

Definition at line 1346 of file mac-low.h.

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

private

Definition at line 1351 of file mac-low.h.

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

private

Definition at line 1352 of file mac-low.h.

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

private

Definition at line 1342 of file mac-low.h.

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

private

Definition at line 1343 of file mac-low.h.

typedef std::vector<MacLowDcfListener *> ns3::MacLow::DcfListeners

private

typedef for a list of MacLowDcfListener.

Definition at line 1297 of file mac-low.h.

typedef std::vector<MacLowDcfListener *>::const_iterator ns3::MacLow::DcfListenersCI

private

typedef for an iterator for a list of MacLowDcfListener.

Definition at line 1293 of file mac-low.h.

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

typedef for a callback for MacLowRx

Definition at line 494 of file mac-low.h.

typedef std::map<AcIndex, MacLowAggregationCapableTransmissionListener*> ns3::MacLow::QueueListeners

private

Definition at line 1357 of file mac-low.h.

Constructor & Destructor Documentation

ns3::MacLow::MacLow

(

)

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

References m_aggregateQueue, m_ampdu, m_lastNavDuration, m_lastNavStart, m_promisc, m_sentMpdus, NS_LOG_FUNCTION, and ns3::Seconds().

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ns3::MacLow::~MacLow ( )

virtual

Definition at line 382 of file mac-low.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

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

Definition at line 2613 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), ns3::WifiMacHeader::ADDR1, ns3::Packet::AddTrailer(), ns3::MpduAggregator::Aggregate(), ns3::WifiMacHeader::BLOCK_ACK, ns3::Packet::Copy(), FlushAggregateQueue(), ns3::WifiMacHeader::GetAddr1(), ns3::Packet::GetSize(), ns3::WifiMacHeader::GetSize(), ns3::CtrlBAckRequestHeader::GetStartingSequence(), GetTid(), InsertInTxQueue(), ns3::WifiMacHeader::IsBlockAck(), ns3::WifiMacHeader::IsBlockAckReq(), ns3::Mac48Address::IsBroadcast(), IsInWindow(), ns3::WifiMacHeader::IsQosData(), m_aggregateQueue, m_edcaListeners, m_mpduAggregator, m_sentMpdus, m_txParams, ns3::MacLowTransmissionParameters::MustSendRts(), ns3::WifiMacHeader::NORMAL_ACK, NS_ASSERT, NS_LOG_DEBUG, ns3::Packet::PeekHeader(), PerformMsduAggregation(), ns3::QosUtilsMapTidToAc(), ns3::AmpduTag::SetAmpdu(), ns3::AmpduTag::SetNoOfMpdus(), StopMpduAggregation(), and ns3::WIFI_MAC_FCS_LENGTH.

Referenced by IsAmpdu().

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void ns3::MacLow::BlockAckTimeout ( void  )

private

Event handler when block ACK timeout occurs.

Definition at line 1583 of file mac-low.cc.

References FlushAggregateQueue(), ns3::WifiMacHeader::GetAddr1(), m_ampdu, m_currentHdr, m_listener, m_sentMpdus, m_stationManager, ns3::MacLowTransmissionListener::MissedBlockAck(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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

private

Definition at line 1290 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), GetCtsDuration(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), GetRtsSize(), GetRtsTxVector(), GetSifs(), GetSize(), m_currentHdr, m_phy, m_stationManager, ns3::MacLowTransmissionParameters::MustSendRts(), ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::Seconds(), ns3::WIFI_PREAMBLE_HT_GF, and ns3::WIFI_PREAMBLE_LONG.

Referenced by CalculateTransmissionTime().

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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 1329 of file mac-low.cc.

References CalculateOverallTxTime(), ns3::WifiPhy::CalculateTxDuration(), ns3::WifiMacHeader::GetAddr1(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), ns3::MacLowTransmissionParameters::HasNextPacket(), m_currentHdr, m_phy, m_stationManager, ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_GF, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

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 435 of file mac-low.cc.

References ns3::EventId::Cancel(), ns3::MacLowTransmissionListener::Cancel(), ns3::EventId::IsRunning(), m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_endTxNoAckEvent, m_fastAckFailedTimeoutEvent, m_fastAckTimeoutEvent, m_listener, m_normalAckTimeoutEvent, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_superFastAckTimeoutEvent, m_waitRifsEvent, m_waitSifsEvent, 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 2185 of file mac-low.cc.

References ns3::MacLowAggregationCapableTransmissionListener::BlockAckInactivityTimeout(), ns3::MgtAddBaResponseHeader::GetBufferSize(), ns3::BlockAckAgreement::GetTid(), ns3::MgtAddBaResponseHeader::GetTid(), ns3::BlockAckAgreement::GetTimeout(), ns3::MgtAddBaResponseHeader::GetTimeout(), ns3::BlockAckCache::Init(), ns3::MgtAddBaResponseHeader::IsAmsduSupported(), ns3::MgtAddBaResponseHeader::IsImmediateBlockAck(), m_bAckAgreements, m_bAckCaches, m_edcaListeners, ns3::MicroSeconds(), ns3::QosUtilsMapTidToAc(), ns3::Simulator::Schedule(), ns3::BlockAckAgreement::SetAmsduSupport(), ns3::BlockAckAgreement::SetBufferSize(), ns3::BlockAckAgreement::SetDelayedBlockAck(), ns3::BlockAckAgreement::SetImmediateBlockAck(), ns3::BlockAckAgreement::SetStartingSequence(), ns3::BlockAckAgreement::SetTimeout(), and timeout.

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 1531 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), m_ampdu, m_currentHdr, m_currentPacket, m_listener, m_sentMpdus, m_stationManager, ns3::MacLowTransmissionListener::MissedCts(), 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,
		WifiPreamble	preamble
	)

Parameters

aggregatedPacket	which is the current A-MPDU
rxSnr	snr of packet received
txVector	TXVECTOR of packet received
preamble	type of preamble used for the packet received

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

Definition at line 2519 of file mac-low.cc.

References ns3::MpduAggregator::Deaggregate(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetDuration(), ns3::AmpduTag::GetNoOfMpdus(), ns3::WifiMacHeader::GetQosTid(), ns3::WifiMacHeader::GetSequenceNumber(), GetSifs(), ns3::WifiMacHeader::IsAck(), ns3::WifiMacHeader::IsBlockAck(), ns3::WifiMacHeader::IsBlockAckReq(), ns3::WifiMacHeader::IsData(), ns3::EventId::IsExpired(), ns3::WifiMacHeader::IsQosAck(), ns3::WifiMacHeader::IsQosData(), m_bAckAgreements, m_currentTxVector, m_receivedAtLeastOneMpdu, m_self, m_sendAckEvent, NotifyNav(), NS_ASSERT, NS_FATAL_ERROR, NS_LOG_DEBUG, ReceiveOk(), ns3::Packet::RemovePacketTag(), ResetBlockAckInactivityTimerIfNeeded(), ns3::Simulator::Schedule(), and SendBlockAckAfterAmpdu().

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 2227 of file mac-low.cc.

References m_bAckAgreements, m_bAckCaches, NS_ASSERT, 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 406 of file mac-low.cc.

References ns3::EventId::Cancel(), m_aggregateQueue, m_ampdu, m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_endTxNoAckEvent, m_fastAckFailedTimeoutEvent, m_fastAckTimeoutEvent, m_mpduAggregator, m_normalAckTimeoutEvent, m_phy, m_phyMacLowListener, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_sentMpdus, m_stationManager, m_superFastAckTimeoutEvent, m_waitRifsEvent, m_waitSifsEvent, 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 1403 of file mac-low.cc.

References m_dcfListeners, 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

Returns

true if NAV is resetted

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

References m_dcfListeners, 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 2057 of file mac-low.cc.

References ns3::MacLowTransmissionListener::EndTxNoAck(), and m_listener.

Referenced by StartDataTxTimers().

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void ns3::MacLow::FastAckFailedTimeout ( void  )

private

Event handler when fast ACK timeout occurs (busy).

Definition at line 2065 of file mac-low.cc.

References m_listener, ns3::MacLowTransmissionListener::MissedAck(), 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 1566 of file mac-low.cc.

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

Referenced by StartDataTxTimers().

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void ns3::MacLow::FlushAggregateQueue

(

void

)

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

Definition at line 2848 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, WifiPreamble  preamble  )

private

Forward the packet down to WifiPhy for transmission.

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

Parameters

packet
hdr
txVector
preamble

Definition at line 1463 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::MpduAggregator::AddHeaderAndPad(), ns3::Packet::AddPacketTag(), ns3::Packet::AddTrailer(), ns3::WifiPhy::CalculateTxDuration(), ns3::Packet::Copy(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetDuration(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::WifiMacHeader::GetSequenceControl(), ns3::Packet::GetSize(), GetSize(), ns3::WifiMacHeader::GetTypeString(), ns3::WifiMacHeader::IsRts(), m_aggregateQueue, m_ampdu, m_currentHdr, m_mpduAggregator, m_phy, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Simulator::Schedule(), ns3::Seconds(), ns3::WifiPhy::SendPacket(), SendPacket(), ns3::AmpduTag::SetAmpdu(), ns3::WifiMacHeader::SetDuration(), ns3::AmpduTag::SetNoOfMpdus(), and ns3::WIFI_PREAMBLE_NONE.

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 1189 of file mac-low.cc.

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

Referenced by 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 1183 of file mac-low.cc.

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

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uint32_t ns3::MacLow::GetAckSize ( void  ) const

private

Return the total ACK size (including FCS trailer).

Returns

the total ACK size

Definition at line 1148 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 604 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 1267 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 1283 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 599 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 609 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, enum 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
dataTxVector
type	the Block ACK type

Returns

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

Definition at line 1195 of file mac-low.cc.

References ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), GetBlockAckSize(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), m_phy, ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

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

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

private

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

Parameters

type	the Block ACK type

Returns

the total Block ACK size

Definition at line 1155 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 1272 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 644 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 614 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 1216 of file mac-low.cc.

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

Referenced by 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 1209 of file mac-low.cc.

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

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uint32_t ns3::MacLow::GetCtsSize ( void  ) const

private

Return the total CTS size (including FCS trailer).

Returns

the total CTS size

Definition at line 1222 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 619 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 559 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 1241 of file mac-low.cc.

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

Referenced by SendCtsToSelf().

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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 1262 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 1278 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

protectedvirtual

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 1253 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::WifiRemoteStationManager::GetDataTxVector(), ns3::WifiMacTrailer::GetSerializedSize(), ns3::Packet::GetSize(), ns3::WifiMacHeader::GetSize(), and m_stationManager.

Referenced by CalculateOverallTxTime(), CalculateTransmissionTime(), ns3::WaveMacLow::GetDataTxVector(), NeedCtsToSelf(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), and StopMpduAggregation().

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Ptr< WifiPhy > ns3::MacLow::GetPhy

(

void

)

const

Definition at line 515 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 639 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 629 of file mac-low.cc.

References m_rifs.

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

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uint32_t ns3::MacLow::GetRtsSize ( void  ) const

private

Return the total RTS size (including FCS trailer).

Returns

the total RTS size

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

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

Referenced by 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 1247 of file mac-low.cc.

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

Referenced by CalculateOverallTxTime(), NotifyNav(), 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 624 of file mac-low.cc.

References m_sifs.

Referenced by 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  ) const

private

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

Returns

the total packet size

Definition at line 1229 of file mac-low.cc.

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

Referenced by CalculateOverallTxTime(), ForwardDown(), 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 634 of file mac-low.cc.

References m_slotTime.

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

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uint8_t ns3::MacLow::GetTid ( Ptr< const Packet >  packet, const WifiMacHeader  hdr  ) const

private

Parameters

packet	packet to check
hdr	802.11 header for packet to check

Returns Tid of different packet types

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

References ns3::WifiMacHeader::GetQosTid(), ns3::CtrlBAckRequestHeader::GetTidInfo(), ns3::CtrlBAckResponseHeader::GetTidInfo(), ns3::WifiMacHeader::IsBlockAck(), ns3::WifiMacHeader::IsBlockAckReq(), ns3::WifiMacHeader::IsQosData(), and ns3::Packet::PeekHeader().

Referenced by AggregateToAmpdu(), PerformMsduAggregation(), and SendDataAfterCts().

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

private

Insert in a temporary queue.

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

Definition at line 2856 of file mac-low.cc.

References ns3::MacLow::Item::hdr, m_txPackets, 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

Definition at line 666 of file mac-low.cc.

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

Referenced by StartTransmission().

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

private

Parameters

seq	MPDU sequence number
winstart	sequence number window start
winsize	the size of the sequence number window (currently default is 64) This method checks if the MPDU's sequence number is inside the scoreboard boundaries or not

Definition at line 2108 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 1833 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 649 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 1394 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  )

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 750 of file mac-low.cc.

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

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 1550 of file mac-low.cc.

References FlushAggregateQueue(), ns3::WifiMacHeader::GetAddr1(), m_ampdu, m_currentHdr, m_listener, m_sentMpdus, m_stationManager, ns3::MacLowTransmissionListener::MissedAck(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::NotifyAckTimeoutResetNow ( )

private

Notify DcfManager (via DcfListener) that ACK timer should be resetted.

Definition at line 1438 of file mac-low.cc.

References m_dcfListeners.

Referenced by ReceiveOk().

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

private

Notify DcfManager (via DcfListener) that ACK timer should be started for the given duration.

Parameters

duration

Definition at line 1430 of file mac-low.cc.

References m_dcfListeners.

Referenced by StartDataTxTimers().

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void ns3::MacLow::NotifyCtsTimeoutResetNow ( )

private

Notify DcfManager (via DcfListener) that CTS timer should be resetted.

Definition at line 1454 of file mac-low.cc.

References m_dcfListeners.

Referenced by ReceiveOk().

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

private

Notify DcfManager (via DcfListener) that CTS timer should be started for the given duration.

Parameters

duration

Definition at line 1446 of file mac-low.cc.

References m_dcfListeners.

Referenced by SendRtsForPacket().

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

private

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 1352 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 812 of file mac-low.cc.

References ns3::EventId::Cancel(), CancelAllEvents(), ns3::EventId::IsRunning(), m_currentPacket, m_lastNavDuration, m_lastNavStart, m_listener, 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 796 of file mac-low.cc.

References ns3::EventId::Cancel(), CancelAllEvents(), ns3::EventId::IsRunning(), m_currentPacket, m_lastNavDuration, m_lastNavStart, m_listener, 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 2868 of file mac-low.cc.

References ns3::WifiMacHeader::ADDR1, ns3::WifiMacHeader::GetAddr1(), GetBssid(), ns3::WifiMacHeader::GetQosTid(), ns3::Packet::GetSize(), GetTid(), m_edcaListeners, 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< const 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 756 of file mac-low.cc.

References ns3::Packet::Copy(), ns3::MpduAggregator::Deaggregate(), FastAckFailedTimeout(), ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetDuration(), ns3::AmpduTag::GetNoOfMpdus(), ns3::WifiMacHeader::GetQosTid(), GetSifs(), ns3::WifiMacHeader::IsBlockAckReq(), ns3::EventId::IsExpired(), ns3::WifiMacHeader::IsQosData(), m_currentTxVector, m_fastAckFailedTimeoutEvent, m_receivedAtLeastOneMpdu, m_sendAckEvent, m_txParams, ns3::MacLowTransmissionParameters::MustWaitFastAck(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Packet::RemovePacketTag(), ns3::Simulator::Schedule(), and SendBlockAckAfterAmpdu().

Referenced by SetPhy().

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

private

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

Definition at line 2114 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr2(), ns3::WifiMacHeader::GetQosTid(), ns3::WifiMacHeader::GetSequenceNumber(), ns3::WifiRemoteStationManager::HasHtSupported(), 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,
		WifiPreamble	preamble,
		bool	ampduSubframe
	)

Parameters

packet	packet received
rxSnr	snr of packet received
txVector	TXVECTOR of packet received
preamble	type of preamble used for the 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 827 of file mac-low.cc.

References ns3::EventId::Cancel(), FlushAggregateQueue(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiTxVector::GetMode(), GetSifs(), ns3::CtrlBAckRequestHeader::GetStartingSequence(), ns3::CtrlBAckRequestHeader::GetTidInfo(), ns3::MacLowTransmissionListener::GotAck(), ns3::MacLowTransmissionListener::GotBlockAck(), ns3::MacLowTransmissionListener::GotCts(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), ns3::CtrlBAckRequestHeader::IsMultiTid(), IsNavZero(), ns3::EventId::IsRunning(), m_ampdu, m_bAckAgreements, m_bAckCaches, m_blockAckTimeoutEvent, m_ctsTimeoutEvent, m_currentHdr, m_currentPacket, m_edcaListeners, m_fastAckTimeoutEvent, m_listener, m_normalAckTimeoutEvent, m_promisc, m_receivedAtLeastOneMpdu, m_rxCallback, m_self, m_sendAckEvent, m_sendCtsEvent, m_sendDataEvent, m_sentMpdus, m_stationManager, m_superFastAckTimeoutEvent, m_txParams, m_waitSifsEvent, 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(), and WaitSifsAfterEndTx().

Referenced by DeaggregateAmpduAndReceive().

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void ns3::MacLow::RegisterBlockAckListenerForAc	(	enum AcIndex	ac,
		MacLowAggregationCapableTransmissionListener *	listener
	)

Parameters

ac	Access class managed by the queue.
listener	The listener for the queue.

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

Definition at line 2507 of file mac-low.cc.

References m_edcaListeners.

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

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void ns3::MacLow::RegisterDcfListener

(

MacLowDcfListener *

listener

)

Parameters

listener

listen to NAV events for every incoming and outgoing packet.

Definition at line 660 of file mac-low.cc.

References m_dcfListeners.

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

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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 395 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 2487 of file mac-low.cc.

References ns3::MacLowAggregationCapableTransmissionListener::BlockAckInactivityTimeout(), ns3::EventId::Cancel(), ns3::BlockAckAgreement::GetPeer(), ns3::BlockAckAgreement::GetTid(), ns3::BlockAckAgreement::GetTimeout(), ns3::EventId::IsRunning(), m_edcaListeners, ns3::BlockAckAgreement::m_inactivityEvent, ns3::MicroSeconds(), NS_ASSERT, ns3::QosUtilsMapTidToAc(), ns3::Simulator::Schedule(), and timeout.

Referenced by DeaggregateAmpduAndReceive(), and ReceiveOk().

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void ns3::MacLow::ResetPhy

(

void

)

Remove WifiPhy associated with this MacLow.

Parameters

phy	WifiPhy associated with this MacLow

Definition at line 520 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 2306 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

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

Definition at line 2243 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 2075 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddPacketTag(), ns3::Packet::AddTrailer(), ForwardDown(), GetAckDuration(), GetAckTxVector(), GetSifs(), ns3::MicroSeconds(), NS_ASSERT, 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(), ns3::WIFI_MAC_CTL_ACK, and ns3::WIFI_PREAMBLE_LONG.

Referenced by ReceiveOk().

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

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.

Definition at line 2402 of file mac-low.cc.

References ns3::COMPRESSED_BLOCK_ACK, ns3::WifiTxVector::GetMode(), m_bAckAgreements, m_bAckCaches, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, SendBlockAckResponse(), ns3::CtrlBAckResponseHeader::SetStartingSequence(), ns3::CtrlBAckResponseHeader::SetTidInfo(), and ns3::CtrlBAckResponseHeader::SetType().

Referenced by DeaggregateAmpduAndReceive(), and ReceiveError().

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

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

Definition at line 2424 of file mac-low.cc.

References ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::CtrlBAckRequestHeader::GetStartingSequence(), ns3::CtrlBAckRequestHeader::GetTidInfo(), ns3::WifiRemoteStationManager::HasHtSupported(), 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  )

private

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

Parameters

blockAck
originator
immediate
duration
blockAckReqTxMode

Definition at line 2337 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::COMPRESSED_BLOCK_ACK, ns3::MacLowTransmissionParameters::DisableAck(), ns3::MacLowTransmissionParameters::DisableNextData(), ns3::MacLowTransmissionParameters::EnableAck(), ForwardDown(), GetAckDuration(), GetAddress(), GetBlockAckDuration(), GetBlockAckTxVector(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), GetSifs(), ns3::CtrlBAckResponseHeader::IsBasic(), ns3::CtrlBAckResponseHeader::IsCompressed(), ns3::CtrlBAckResponseHeader::IsMultiTid(), m_currentHdr, m_currentPacket, m_txParams, ns3::MicroSeconds(), NS_ASSERT, NS_FATAL_ERROR, 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(), ns3::WIFI_MAC_CTL_BACKRESP, ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

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 1931 of file mac-low.cc.

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

Referenced by ReceiveOk().

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void ns3::MacLow::SendCtsToSelf ( void  )

private

Send CTS for a CTS-to-self mechanism.

Definition at line 1845 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), GetCtsSize(), GetCtsToSelfTxVector(), GetDataTxVector(), ns3::MacLowTransmissionParameters::GetDurationId(), ns3::WifiPhy::GetFrequency(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), GetSize(), ns3::MacLowTransmissionParameters::HasDurationId(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), m_currentHdr, m_currentPacket, 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(), ns3::WIFI_MAC_CTL_CTS, ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

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 1964 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), GetSize(), GetTid(), ns3::MacLowTransmissionParameters::HasNextPacket(), m_aggregateQueue, m_ampdu, m_currentHdr, m_currentPacket, m_edcaListeners, m_phy, m_stationManager, m_txPackets, m_txParams, ns3::MicroSeconds(), ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NS_ASSERT, NS_LOG_FUNCTION, ns3::QosUtilsMapTidToAc(), ns3::Seconds(), ns3::WifiMacHeader::SetDuration(), StartDataTxTimers(), ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_GF, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

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 1766 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), GetDataTxVector(), ns3::MacLowTransmissionParameters::GetDurationId(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetSifs(), ns3::MacLowTransmissionParameters::HasDurationId(), ns3::MacLowTransmissionParameters::HasNextPacket(), m_ampdu, m_currentHdr, m_currentPacket, m_phy, m_stationManager, m_txParams, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NS_LOG_FUNCTION, ns3::Seconds(), ns3::WifiMacHeader::SetDuration(), StartDataTxTimers(), ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_GF, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

Referenced by StartTransmission().

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void ns3::MacLow::SendPacket ( Ptr< const Packet >  packet, WifiTxVector  txVector, WifiPreamble  preamble, uint8_t  packetType  )

private

Forward the packet down to WifiPhy for transmission.

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

Parameters

packet
hdr
txVector
preamble

Definition at line 1524 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 1616 of file mac-low.cc.

References ns3::Packet::AddHeader(), ns3::Packet::AddTrailer(), ns3::BASIC_BLOCK_ACK, ns3::WifiPhy::CalculateTxDuration(), ns3::COMPRESSED_BLOCK_ACK, CtsTimeout(), ForwardDown(), GetAckDuration(), ns3::WifiMacHeader::GetAddr1(), ns3::WifiMacHeader::GetAddr2(), GetBlockAckDuration(), GetBlockAckTxVector(), GetCtsDuration(), GetCtsTimeout(), GetDataTxVector(), ns3::MacLowTransmissionParameters::GetDurationId(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), ns3::WifiTxVector::GetMode(), ns3::MacLowTransmissionParameters::GetNextPacketSize(), GetRtsSize(), GetRtsTxVector(), GetSifs(), GetSize(), ns3::MacLowTransmissionParameters::HasDurationId(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), m_ctsTimeoutEvent, m_currentHdr, m_currentPacket, m_phy, m_self, m_stationManager, m_txParams, ns3::MacLowTransmissionParameters::MustWaitAck(), ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), NotifyCtsTimeoutStartNow(), NS_ASSERT, NS_LOG_FUNCTION, ns3::Simulator::Schedule(), ns3::Seconds(), ns3::WifiMacHeader::SetAddr1(), ns3::WifiMacHeader::SetAddr2(), ns3::WifiMacHeader::SetDsNotFrom(), ns3::WifiMacHeader::SetDsNotTo(), ns3::WifiMacHeader::SetDuration(), ns3::WifiMacHeader::SetNoMoreFragments(), ns3::WifiMacHeader::SetNoRetry(), ns3::WifiMacHeader::SetType(), ns3::WIFI_MAC_CTL_RTS, ns3::WIFI_PREAMBLE_HT_GF, and ns3::WIFI_PREAMBLE_LONG.

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 539 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 534 of file mac-low.cc.

References m_self.

Referenced by 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 544 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 589 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 549 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 564 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 554 of file mac-low.cc.

References m_ctsToSelfSupported.

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

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void ns3::MacLow::SetMpduAggregator

(

Ptr< MpduAggregator >

aggregator

)

Set up MpduAggregator associated with this MacLow.

Parameters

aggregator

MpduAggregator associated with this MacLow

Definition at line 2513 of file mac-low.cc.

References m_mpduAggregator.

Referenced by TwoLevelAggregationTest::DoRun(), and ns3::QosWifiMacHelper::Setup().

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void ns3::MacLow::SetPhy

(

Ptr< WifiPhy >

phy

)

Set up WifiPhy associated with this MacLow.

Parameters

phy	WifiPhy associated with this MacLow

Definition at line 507 of file mac-low.cc.

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

Referenced by 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 579 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 594 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 584 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 655 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 569 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 574 of file mac-low.cc.

References m_slotTime.

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

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

private

Set up WifiPhy listener for this MacLow.

Parameters

phy	the WifiPhy this MacLow is connected to

Definition at line 388 of file mac-low.cc.

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

Referenced by SetPhy().

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void ns3::MacLow::SetWifiRemoteStationManager

(

Ptr< WifiRemoteStationManager >

manager

)

Set up WifiRemoteStationManager associated with this MacLow.

Parameters

manager

WifiRemoteStationManager associated with this MacLow

Definition at line 528 of file mac-low.cc.

References m_stationManager.

Referenced by 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 1694 of file mac-low.cc.

References BlockAckTimeout(), ns3::WifiPhy::CalculateTxDuration(), EndTxNoAck(), FastAckTimeout(), GetAckTimeout(), ns3::WifiMacHeader::GetAddr1(), GetBasicBlockAckTimeout(), GetCompressedBlockAckTimeout(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), GetPifs(), GetRifs(), GetSifs(), GetSize(), ns3::WifiRemoteStationManager::HasHtSupported(), ns3::MacLowTransmissionParameters::HasNextPacket(), ns3::EventId::IsExpired(), m_blockAckTimeoutEvent, m_currentHdr, m_currentPacket, m_fastAckTimeoutEvent, m_normalAckTimeoutEvent, m_phy, m_stationManager, m_superFastAckTimeoutEvent, m_txParams, m_waitRifsEvent, m_waitSifsEvent, ns3::MacLowTransmissionParameters::MustWaitBasicBlockAck(), ns3::MacLowTransmissionParameters::MustWaitCompressedBlockAck(), ns3::MacLowTransmissionParameters::MustWaitFastAck(), ns3::MacLowTransmissionParameters::MustWaitNormalAck(), ns3::MacLowTransmissionParameters::MustWaitSuperFastAck(), NormalAckTimeout(), NotifyAckTimeoutStartNow(), NS_ASSERT, ns3::Simulator::Schedule(), SuperFastAckTimeout(), WaitSifsAfterEndTx(), ns3::WIFI_MOD_CLASS_HT, ns3::WIFI_PREAMBLE_HT_GF, ns3::WIFI_PREAMBLE_HT_MF, and ns3::WIFI_PREAMBLE_LONG.

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

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

virtual

Parameters

packet	packet to send
hdr	802.11 header for packet to send
parameters	the transmission parameters to use for this packet.
listener	listen to transmission events.

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

Reimplemented in ns3::WaveMacLow.

Definition at line 683 of file mac-low.cc.

References CancelAllEvents(), ns3::Packet::Copy(), ns3::MacLowTransmissionParameters::EnableCompressedBlockAck(), ns3::WifiMacHeader::GetAddr1(), GetSize(), IsAmpdu(), ns3::WifiPhy::IsStateTx(), m_aggregateQueue, m_ampdu, m_ctsToSelfSupported, m_currentHdr, m_currentPacket, m_listener, m_phy, m_sentMpdus, m_txParams, ns3::MacLowTransmissionParameters::MustSendRts(), NeedCtsToSelf(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, SendCtsToSelf(), SendDataPacket(), and SendRtsForPacket().

Referenced by ns3::DcaTxop::NotifyAccessGranted(), ns3::EdcaTxopN::NotifyAccessGranted(), ns3::EdcaTxopN::SendAddBaRequest(), ns3::EdcaTxopN::SendBlockAckRequest(), ns3::DcaTxop::StartNext(), ns3::EdcaTxopN::StartNext(), 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 2590 of file mac-low.cc.

References ns3::WifiPhy::CalculateTxDuration(), ns3::MpduAggregator::CanBeAggregated(), ns3::WifiMacHeader::GetAddr1(), GetDataTxVector(), ns3::WifiPhy::GetFrequency(), ns3::WifiPhy::GetGreenfield(), ns3::WifiRemoteStationManager::GetGreenfieldSupported(), ns3::Packet::GetSize(), ns3::WifiMacHeader::GetSize(), m_currentHdr, m_currentPacket, m_mpduAggregator, m_phy, m_stationManager, ns3::MilliSeconds(), ns3::WIFI_MAC_FCS_LENGTH, ns3::WIFI_PREAMBLE_HT_GF, and ns3::WIFI_PREAMBLE_LONG.

Referenced by AggregateToAmpdu(), and PerformMsduAggregation().

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

private

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 2155 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 1597 of file mac-low.cc.

References ns3::WifiMacHeader::GetAddr1(), ns3::MacLowTransmissionListener::GotAck(), ns3::WifiPhy::IsStateIdle(), m_currentHdr, m_listener, m_phy, m_stationManager, ns3::MacLowTransmissionListener::MissedAck(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::ReportDataFailed().

Referenced by StartDataTxTimers().

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void ns3::MacLow::WaitSifsAfterEndTx ( void  )

private

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

Definition at line 2051 of file mac-low.cc.

References m_listener, and ns3::MacLowTransmissionListener::StartNext().

Referenced by ReceiveOk(), and StartDataTxTimers().

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Friends And Related Function Documentation

friend class ::TwoLevelAggregationTest

friend

Definition at line 490 of file mac-low.h.

Member Data Documentation

Time ns3::MacLow::m_ackTimeout

private

ACK timeout duration.

Definition at line 1322 of file mac-low.h.

Referenced by GetAckTimeout(), and SetAckTimeout().

Ptr<WifiMacQueue> ns3::MacLow::m_aggregateQueue

private

Queue used for MPDU aggregation.

Definition at line 1361 of file mac-low.h.

Referenced by AggregateToAmpdu(), DoDispose(), FlushAggregateQueue(), ForwardDown(), MacLow(), SendDataAfterCts(), and StartTransmission().

bool ns3::MacLow::m_ampdu

private

Flag if the current transmission involves an A-MPDU.

Definition at line 1335 of file mac-low.h.

Referenced by BlockAckTimeout(), CtsTimeout(), DoDispose(), ForwardDown(), GetSize(), MacLow(), NormalAckTimeout(), ReceiveOk(), SendDataAfterCts(), SendDataPacket(), and StartTransmission().

Agreements ns3::MacLow::m_bAckAgreements

private

Definition at line 1354 of file mac-low.h.

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

BlockAckCaches ns3::MacLow::m_bAckCaches

private

Definition at line 1355 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 1323 of file mac-low.h.

Referenced by GetBasicBlockAckTimeout(), and SetBasicBlockAckTimeout().

EventId ns3::MacLow::m_blockAckTimeoutEvent

private

Block ACK timeout event.

Definition at line 1304 of file mac-low.h.

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

Mac48Address ns3::MacLow::m_bssid

private

BSSID address (Mac48Address)

Definition at line 1321 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 1324 of file mac-low.h.

Referenced by GetCompressedBlockAckTimeout(), and SetCompressedBlockAckTimeout().

Time ns3::MacLow::m_ctsTimeout

private

CTS timeout duration.

Definition at line 1325 of file mac-low.h.

Referenced by GetCtsTimeout(), and SetCtsTimeout().

EventId ns3::MacLow::m_ctsTimeoutEvent

private

CTS timeout event.

Definition at line 1305 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 1359 of file mac-low.h.

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

WifiMacHeader ns3::MacLow::m_currentHdr

private

Header of the current packet.

Definition at line 1317 of file mac-low.h.

Referenced by BlockAckTimeout(), CalculateOverallTxTime(), CalculateTransmissionTime(), CtsTimeout(), TwoLevelAggregationTest::DoRun(), FastAckTimeout(), ForwardDown(), NeedCtsToSelf(), NormalAckTimeout(), ReceiveOk(), SendBlockAckResponse(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartDataTxTimers(), StartTransmission(), StopMpduAggregation(), and SuperFastAckTimeout().

Ptr<Packet> ns3::MacLow::m_currentPacket

private

Current packet transmitted/to be transmitted.

Definition at line 1316 of file mac-low.h.

Referenced by CtsTimeout(), TwoLevelAggregationTest::DoRun(), IsAmpdu(), NeedCtsToSelf(), NotifySleepNow(), NotifySwitchingStartNow(), ReceiveOk(), SendBlockAckResponse(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), StartDataTxTimers(), StartTransmission(), and StopMpduAggregation().

WifiTxVector ns3::MacLow::m_currentTxVector

private

TXVECTOR used for the current packet transmission.

Definition at line 1362 of file mac-low.h.

Referenced by DeaggregateAmpduAndReceive(), and ReceiveError().

DcfListeners ns3::MacLow::m_dcfListeners

private

List of MacLowDcfListener (pass events to Dcf)

Definition at line 1298 of file mac-low.h.

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

QueueListeners ns3::MacLow::m_edcaListeners

private

Definition at line 1358 of file mac-low.h.

Referenced by AggregateToAmpdu(), CreateBlockAckAgreement(), PerformMsduAggregation(), ReceiveOk(), RegisterBlockAckListenerForAc(), ResetBlockAckInactivityTimerIfNeeded(), and SendDataAfterCts().

EventId ns3::MacLow::m_endTxNoAckEvent

private

Event for finishing transmission that does not require ACK.

Definition at line 1310 of file mac-low.h.

Referenced by CancelAllEvents(), and DoDispose().

EventId ns3::MacLow::m_fastAckFailedTimeoutEvent

private

Fast ACK failed timeout event.

Definition at line 1303 of file mac-low.h.

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

EventId ns3::MacLow::m_fastAckTimeoutEvent

private

Fast ACK timeout event.

Definition at line 1301 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 1332 of file mac-low.h.

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

Time ns3::MacLow::m_lastNavStart

private

The time when the latest NAV started.

Definition at line 1331 of file mac-low.h.

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

MacLowTransmissionListener* ns3::MacLow::m_listener

private

Transmission listener for the current packet.

Definition at line 1319 of file mac-low.h.

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

Ptr<MpduAggregator> ns3::MacLow::m_mpduAggregator

private

Definition at line 1314 of file mac-low.h.

Referenced by AggregateToAmpdu(), DoDispose(), ForwardDown(), SetMpduAggregator(), and StopMpduAggregation().

EventId ns3::MacLow::m_navCounterResetCtsMissed

private

Event to reset NAV when CTS is not received.

Definition at line 1311 of file mac-low.h.

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

EventId ns3::MacLow::m_normalAckTimeoutEvent

private

Normal ACK timeout event.

Definition at line 1300 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 1276 of file mac-low.h.

Referenced by CalculateOverallTxTime(), CalculateTransmissionTime(), DoDispose(), FastAckTimeout(), ForwardDown(), GetAckDuration(), GetBlockAckDuration(), GetCtsDuration(), GetPhy(), NavCounterResetCtsMissed(), NotifyNav(), ResetPhy(), SendCtsToSelf(), SendDataAfterCts(), SendDataPacket(), SendPacket(), 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 1337 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 1328 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 1334 of file mac-low.h.

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

bool ns3::MacLow::m_receivedAtLeastOneMpdu

private

Flag whether an MPDU has already been successfully received while receiving an A-MPDU.

Definition at line 1363 of file mac-low.h.

Referenced by DeaggregateAmpduAndReceive(), ReceiveError(), and ReceiveOk().

Time ns3::MacLow::m_rifs

private

Reduced Interframe Space (RIFS) duration.

Definition at line 1329 of file mac-low.h.

Referenced by GetRifs(), and SetRifs().

MacLowRxCallback ns3::MacLow::m_rxCallback

private

Callback to pass packet up.

Definition at line 1278 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 1320 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 1307 of file mac-low.h.

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

EventId ns3::MacLow::m_sendCtsEvent

private

Event to send CTS.

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

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

EventId ns3::MacLow::m_sendDataEvent

private

Event to send DATA.

Definition at line 1308 of file mac-low.h.

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

uint8_t ns3::MacLow::m_sentMpdus

private

Number of transmitted MPDUs in an A-MPDU that have not been acknowledged yet.

Definition at line 1360 of file mac-low.h.

Referenced by AggregateToAmpdu(), BlockAckTimeout(), CtsTimeout(), DoDispose(), MacLow(), NormalAckTimeout(), ReceiveOk(), and StartTransmission().

Time ns3::MacLow::m_sifs

private

Short Interframe Space (SIFS) duration.

Definition at line 1326 of file mac-low.h.

Referenced by GetSifs(), and SetSifs().

Time ns3::MacLow::m_slotTime

private

Slot duration.

Definition at line 1327 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 1277 of file mac-low.h.

Referenced by BlockAckTimeout(), CalculateOverallTxTime(), CalculateTransmissionTime(), CtsTimeout(), DoDispose(), FastAckTimeout(), GetAckTxVector(), GetBlockAckTxVector(), GetCtsToSelfTxVector(), GetCtsTxVector(), GetDataTxVector(), GetRtsTxVector(), NeedCtsToSelf(), NormalAckTimeout(), NotifySwitchingStartNow(), ReceiveMpdu(), ReceiveOk(), SendBlockAckAfterBlockAckRequest(), SendDataAfterCts(), SendDataPacket(), SendRtsForPacket(), SetWifiRemoteStationManager(), StartDataTxTimers(), StopMpduAggregation(), and SuperFastAckTimeout().

EventId ns3::MacLow::m_superFastAckTimeoutEvent

private

Super fast ACK timeout event.

Definition at line 1302 of file mac-low.h.

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

std::vector<Item> ns3::MacLow::m_txPackets

private

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

It is not used in other cases.

Definition at line 1364 of file mac-low.h.

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

MacLowTransmissionParameters ns3::MacLow::m_txParams

private

Transmission parameters of the current packet.

Definition at line 1318 of file mac-low.h.

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

EventId ns3::MacLow::m_waitRifsEvent

private

Wait for RIFS event.

Definition at line 1312 of file mac-low.h.

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

EventId ns3::MacLow::m_waitSifsEvent

private

Wait for SIFS event.

Definition at line 1309 of file mac-low.h.

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

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

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