an implementation of the AARF-CD algorithmThis algorithm was first described in "Efficient Collision Detection for Auto Rate Fallback Algorithm". More...

#include "aarfcd-wifi-manager.h"

Inheritance diagram for ns3::AarfcdWifiManager:

Collaboration diagram for ns3::AarfcdWifiManager:

Public Member Functions
	AarfcdWifiManager ()

virtual	~AarfcdWifiManager ()

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

virtual	~WifiRemoteStationManager ()

void	AddAllSupportedModes (Mac48Address address)
	Invoked in a STA or AP to store all of the modes supported by a destination which is also supported locally. More...

void	AddBasicMcs (WifiMode mcs)
	Add a given Modulation and Coding Scheme (MCS) index to the set of basic MCS. More...

void	AddBasicMode (WifiMode mode)
	Invoked in a STA upon association to store the set of rates which belong to the BSSBasicRateSet of the associated AP and which are supported locally. More...

void	AddStationHtCapabilities (Mac48Address from, HtCapabilities htcapabilities)
	Records HT capabilities of the remote station. More...

void	AddStationVhtCapabilities (Mac48Address from, VhtCapabilities vhtcapabilities)
	Records VHT capabilities of the remote station. More...

void	AddSupportedMcs (Mac48Address address, WifiMode mcs)
	Record the MCS index supported by the station. More...

void	AddSupportedMode (Mac48Address address, WifiMode mode)
	Invoked in a STA or AP to store the set of modes supported by a destination which is also supported locally. More...

WifiTxVector	DoGetCtsToSelfTxVector (void)
	Since CTS-to-self parameters are not dependent on the station, it is implemented in wifiremote station manager. More...

WifiTxVector	GetAckTxVector (Mac48Address address, WifiMode dataMode)

WifiMode	GetBasicMcs (uint32_t i) const
	Return the MCS at the given list index. More...

WifiMode	GetBasicMode (uint32_t i) const
	Return a basic mode from the set of basic modes. More...

WifiTxVector	GetBlockAckTxVector (Mac48Address address, WifiMode dataMode)

WifiTxVector	GetCtsToSelfTxVector (const WifiMacHeader *header, Ptr< const Packet > packet)

WifiTxVector	GetCtsTxVector (Mac48Address address, WifiMode rtsMode)

WifiTxVector	GetDataTxVector (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fullPacketSize)

WifiMode	GetDefaultMcs (void) const
	Return the default Modulation and Coding Scheme (MCS) index. More...

WifiMode	GetDefaultMode (void) const
	Return the default transmission mode. More...

uint8_t	GetDefaultTxPowerLevel (void) const

uint32_t	GetFragmentationThreshold (void) const
	Return the fragmentation threshold. More...

uint32_t	GetFragmentOffset (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fragmentNumber)

uint32_t	GetFragmentSize (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fragmentNumber)

bool	GetGreenfieldSupported (Mac48Address address) const
	Return whether the station supports Greenfield or not. More...

WifiRemoteStationInfo	GetInfo (Mac48Address address)

uint32_t	GetMaxSlrc (void) const
	Return the maximum STA long retry count (SLRC). More...

uint32_t	GetMaxSsrc (void) const
	Return the maximum STA short retry count (SSRC). More...

uint32_t	GetNBasicMcs (void) const
	Return the number of basic MCS index. More...

uint32_t	GetNBasicModes (void) const
	Return the number of basic modes we support. More...

WifiMode	GetNonUnicastMode (void) const
	Return a mode for non-unicast packets. More...

uint32_t	GetNumberOfTransmitAntennas (void)

uint32_t	GetRtsCtsThreshold (void) const
	Return the RTS threshold. More...

WifiTxVector	GetRtsTxVector (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet)

bool	HasHtSupported (void) const
	Return whether the device has HT capability support enabled. More...

bool	HasVhtSupported (void) const
	Return whether the device has VHT capability support enabled. More...

bool	IsAssociated (Mac48Address address) const
	Return whether the station associated. More...

bool	IsBrandNew (Mac48Address address) const
	Return whether the station state is brand new. More...

bool	IsLastFragment (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fragmentNumber)

bool	IsWaitAssocTxOk (Mac48Address address) const
	Return whether we are waiting for an ACK for the association response we sent. More...

bool	NeedCtsToSelf (WifiTxVector txVector)
	Return if we need to do Cts-to-self before sending a DATA. More...

bool	NeedDataRetransmission (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet)

bool	NeedFragmentation (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet)

bool	NeedRts (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet)

bool	NeedRtsRetransmission (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet)

void	PrepareForQueue (Mac48Address address, const WifiMacHeader *header, Ptr< const Packet > packet, uint32_t fullPacketSize)

void	RecordDisassociated (Mac48Address address)
	Records that the STA was disassociated. More...

void	RecordGotAssocTxFailed (Mac48Address address)
	Records that we missed an ACK for the association response we sent. More...

void	RecordGotAssocTxOk (Mac48Address address)
	Records that we got an ACK for the association response we sent. More...

void	RecordWaitAssocTxOk (Mac48Address address)
	Records that we are waiting for an ACK for the association response we sent. More...

void	ReportDataFailed (Mac48Address address, const WifiMacHeader *header)
	Should be invoked whenever the AckTimeout associated to a transmission attempt expires. More...

void	ReportDataOk (Mac48Address address, const WifiMacHeader *header, double ackSnr, WifiMode ackMode, double dataSnr)
	Should be invoked whenever we receive the Ack associated to a data packet we just sent. More...

void	ReportFinalDataFailed (Mac48Address address, const WifiMacHeader *header)
	Should be invoked after calling ReportDataFailed if NeedDataRetransmission returns false. More...

void	ReportFinalRtsFailed (Mac48Address address, const WifiMacHeader *header)
	Should be invoked after calling ReportRtsFailed if NeedRtsRetransmission returns false. More...

void	ReportRtsFailed (Mac48Address address, const WifiMacHeader *header)
	Should be invoked whenever the RtsTimeout associated to a transmission attempt expires. More...

void	ReportRtsOk (Mac48Address address, const WifiMacHeader *header, double ctsSnr, WifiMode ctsMode, double rtsSnr)
	Should be invoked whenever we receive the Cts associated to an RTS we just sent. More...

void	ReportRxOk (Mac48Address address, const WifiMacHeader *header, double rxSnr, WifiMode txMode)

void	Reset (void)
	Reset the station, invoked in a STA upon dis-association or in an AP upon reboot. More...

void	Reset (Mac48Address address)
	Invoked in an AP upon disassociation of a specific STA. More...

void	SetDefaultTxPowerLevel (uint8_t txPower)
	Set the default transmission power level. More...

void	SetFragmentationThreshold (uint32_t threshold)
	Sets a fragmentation threshold. More...

void	SetHtSupported (bool enable)
	Enable or disable HT capability support. More...

void	SetMaxSlrc (uint32_t maxSlrc)
	Sets the maximum STA long retry count (SLRC). More...

void	SetMaxSsrc (uint32_t maxSsrc)
	Sets the maximum STA short retry count (SSRC). More...

void	SetRtsCtsThreshold (uint32_t threshold)
	Sets the RTS threshold. More...

virtual void	SetupMac (Ptr< WifiMac > mac)
	Set up MAC associated with this device since it is the object that knows the full set of timing parameters (e.g. More...

virtual void	SetupPhy (Ptr< WifiPhy > phy)
	Set up PHY associated with this device since it is the object that knows the full set of transmit rates that are supported. More...

void	SetVhtSupported (bool enable)
	Enable or disable VHT capability support. More...

void	UpdateFragmentationThreshold (void)
	Typically called to update the fragmentation threshold at the start of a new transmission. More...

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 by TypeId. 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...

Static Public Member Functions
static TypeId	GetTypeId (void)

Static Public Member Functions inherited from ns3::WifiRemoteStationManager
static TypeId	GetTypeId (void)

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

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

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

Private Member Functions
void	CheckRts (AarfcdWifiRemoteStation *station)
	Check if the use of RTS for the given station can be turned off. More...

virtual WifiRemoteStation *	DoCreateStation (void) const

virtual WifiTxVector	DoGetDataTxVector (WifiRemoteStation *station, uint32_t size)

virtual WifiTxVector	DoGetRtsTxVector (WifiRemoteStation *station)

virtual bool	DoNeedRts (WifiRemoteStation *station, Ptr< const Packet > packet, bool normally)

virtual void	DoReportDataFailed (WifiRemoteStation *station)
	It is important to realize that "recovery" mode starts after failure of the first transmission after a rate increase and ends at the first successful transmission. More...

virtual void	DoReportDataOk (WifiRemoteStation *station, double ackSnr, WifiMode ackMode, double dataSnr)
	This method is a pure virtual method that must be implemented by the sub-class. More...

virtual void	DoReportFinalDataFailed (WifiRemoteStation *station)
	This method is a pure virtual method that must be implemented by the sub-class. More...

virtual void	DoReportFinalRtsFailed (WifiRemoteStation *station)
	This method is a pure virtual method that must be implemented by the sub-class. More...

virtual void	DoReportRtsFailed (WifiRemoteStation *station)
	This method is a pure virtual method that must be implemented by the sub-class. More...

virtual void	DoReportRtsOk (WifiRemoteStation *station, double ctsSnr, WifiMode ctsMode, double rtsSnr)
	This method is a pure virtual method that must be implemented by the sub-class. More...

virtual void	DoReportRxOk (WifiRemoteStation *station, double rxSnr, WifiMode txMode)
	This method is a pure virtual method that must be implemented by the sub-class. More...

void	IncreaseRtsWnd (AarfcdWifiRemoteStation *station)
	Increase the RTS window size of the given station. More...

virtual bool	IsLowLatency (void) const

void	ResetRtsWnd (AarfcdWifiRemoteStation *station)
	Reset the RTS window of the given station. More...

void	TurnOffRts (AarfcdWifiRemoteStation *station)
	Turn off RTS for the given station. More...

void	TurnOnRts (AarfcdWifiRemoteStation *station)
	Turn on RTS for the given station. More...

Private Attributes
uint32_t	m_maxRtsWnd

uint32_t	m_maxSuccessThreshold

uint32_t	m_minRtsWnd

uint32_t	m_minSuccessThreshold

uint32_t	m_minTimerThreshold

double	m_successK

double	m_timerK

bool	m_turnOffRtsAfterRateDecrease

bool	m_turnOnRtsAfterRateIncrease

Additional Inherited Members
Public Types inherited from ns3::WifiRemoteStationManager
typedef void(*	PowerChangeTracedCallback) (uint8_t power, Mac48Address remoteAddress)
	TracedCallback signature for power change events. More...

typedef void(*	RateChangeTracedCallback) (uint32_t rate, Mac48Address remoteAddress)
	TracedCallback signature for rate change events. More...

Protected Member Functions inherited from ns3::WifiRemoteStationManager
virtual void	DoDispose (void)
	Destructor implementation. More...

bool	GetAggregation (const WifiRemoteStation *station) const
	Return whether the given station supports A-MPDU. More...

uint32_t	GetChannelWidth (const WifiRemoteStation *station) const
	Return the channel width supported by the station. More...

bool	GetGreenfield (const WifiRemoteStation *station) const
	Return whether the station supports Greenfield or not. More...

uint32_t	GetLongRetryCount (const WifiRemoteStation *station) const
	Return the long retry limit of the given station. More...

Ptr< WifiMac >	GetMac (void) const
	Return the WifiMac. More...

WifiMode	GetMcsSupported (const WifiRemoteStation *station, uint32_t i) const
	Return the WifiMode supported by the specified station at the specified index. More...

uint32_t	GetNess (const WifiRemoteStation *station) const

uint32_t	GetNMcsSupported (const WifiRemoteStation *station) const
	Return the number of MCS supported by the given station. More...

uint32_t	GetNSupported (const WifiRemoteStation *station) const
	Return the number of modes supported by the given station. More...

uint32_t	GetNumberOfReceiveAntennas (const WifiRemoteStation *station) const
	Return the number of receive antennas the station has. More...

uint32_t	GetNumberOfTransmitAntennas (const WifiRemoteStation *station) const
	Return the number of transmit antennas the station has. More...

Ptr< WifiPhy >	GetPhy (void) const
	Return the WifiPhy. More...

bool	GetShortGuardInterval (const WifiRemoteStation *station) const
	Return whether the given station supports short guard interval. More...

uint32_t	GetShortRetryCount (const WifiRemoteStation *station) const
	Return the short retry limit of the given station. More...

bool	GetStbc (const WifiRemoteStation *station) const
	Return whether the given station supports space-time block coding (STBC). More...

WifiMode	GetSupported (const WifiRemoteStation *station, uint32_t i) const
	Return whether mode associated with the specified station at the specified index. 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...

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

an implementation of the AARF-CD algorithm

This algorithm was first described in "Efficient Collision Detection for Auto Rate Fallback Algorithm".

The implementation available here was done by Federico Maguolo for a very early development version of ns-3. Federico died before merging this work in ns-3 itself so his code was ported to ns-3 later without his supervision.

Config Paths

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

"/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/RemoteStationManager/$ns3::AarfcdWifiManager"

Attributes

SuccessK: Multiplication factor for the success threshold in the AARF algorithm.
- Set with class: ns3::DoubleValue
- Underlying type: double -1.79769e+308:1.79769e+308
- Initial value: 2
- Flags: construct write read
TimerK: Multiplication factor for the timer threshold in the AARF algorithm.
- Set with class: ns3::DoubleValue
- Underlying type: double -1.79769e+308:1.79769e+308
- Initial value: 2
- Flags: construct write read
MaxSuccessThreshold: Maximum value of the success threshold in the AARF algorithm.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 60
- Flags: construct write read
MinTimerThreshold: The minimum value for the 'timer' threshold in the AARF algorithm.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 15
- Flags: construct write read
MinSuccessThreshold: The minimum value for the success threshold in the AARF algorithm.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 10
- Flags: construct write read
MinRtsWnd: Minimum value for Rts window of Aarf-CD
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 1
- Flags: construct write read
MaxRtsWnd: Maximum value for Rts window of Aarf-CD
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 40
- Flags: construct write read
TurnOffRtsAfterRateDecrease: If true the RTS mechanism will be turned off when the rate will be decreased
- Set with class: BooleanValue
- Underlying type: bool
- Initial value: true
- Flags: construct write read
TurnOnRtsAfterRateIncrease: If true the RTS mechanism will be turned on when the rate will be increased
- Set with class: BooleanValue
- Underlying type: bool
- Initial value: true
- Flags: construct write read

Attributes defined in parent class ns3::WifiRemoteStationManager

IsLowLatency: If true, we attempt to modelize a so-called low-latency device: a device where decisions about tx parameters can be made on a per-packet basis and feedback about the transmission of each packet is obtained before sending the next. Otherwise, we modelize a high-latency device, that is a device where we cannot update our decision about tx parameters after every packet transmission.
- Set with class: BooleanValue
- Underlying type: bool
- Flags: read
MaxSsrc: The maximum number of retransmission attempts for an RTS. This value will not have any effect on some rate control algorithms.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 7
- Flags: construct write read
MaxSlrc: The maximum number of retransmission attempts for a DATA packet. This value will not have any effect on some rate control algorithms.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 7
- Flags: construct write read
RtsCtsThreshold: If the size of the data packet + LLC header + MAC header + FCS trailer is bigger than this value, we use an RTS/CTS handshake before sending the data, as per IEEE Std. 802.11-2012, Section 9.3.5. This value will not have any effect on some rate control algorithms.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 2346
- Flags: construct write read
FragmentationThreshold: If the size of the data packet + LLC header + MAC header + FCS trailer is biggerthan this value, we fragment it such that the size of the fragments are equal or smaller than this value, as per IEEE Std. 802.11-2012, Section 9.5. This value will not have any effect on some rate control algorithms.
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 2346
- Flags: construct write read
NonUnicastMode: Wifi mode used for non-unicast transmissions.
- Set with class: WifiModeValue
- Underlying type: WifiMode
- Initial value: Invalid-WifiMode
- Flags: construct write read
DefaultTxPowerLevel: Default power level to be used for transmissions. This is the power level that is used by all those WifiManagers that do notimplement TX power control.
- Set with class: ns3::UintegerValue
- Underlying type: uint8_t 0:255
- Initial value: 0
- Flags: construct write read

No TraceSources are defined for this type.

TraceSources defined in parent class ns3::WifiRemoteStationManager

MacTxRtsFailed: The transmission of a RTS by the MAC layer has failed
Callback signature: ns3::Mac48Address::TracedCallback
MacTxDataFailed: The transmission of a data packet by the MAC layer has failed
Callback signature: ns3::Mac48Address::TracedCallback
MacTxFinalRtsFailed: The transmission of a RTS has exceeded the maximum number of attempts
Callback signature: ns3::Mac48Address::TracedCallback
MacTxFinalDataFailed: The transmission of a data packet has exceeded the maximum number of attempts
Callback signature: ns3::Mac48Address::TracedCallback

Size of this type is 296 bytes (on a 64-bit architecture).

Definition at line 39 of file aarfcd-wifi-manager.h.

Constructor & Destructor Documentation

ns3::AarfcdWifiManager::AarfcdWifiManager ( )

Definition at line 117 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

ns3::AarfcdWifiManager::~AarfcdWifiManager ( )

virtual

Definition at line 123 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::AarfcdWifiManager::CheckRts ( AarfcdWifiRemoteStation * station )

private

Check if the use of RTS for the given station can be turned off.

Parameters

station the station that we are checking

Definition at line 351 of file aarfcd-wifi-manager.cc.

References ns3::AarfcdWifiRemoteStation::m_rtsCounter, ns3::AarfcdWifiRemoteStation::m_rtsOn, NS_LOG_FUNCTION, and TurnOffRts().

Referenced by DoReportDataFailed(), and DoReportDataOk().

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WifiRemoteStation * ns3::AarfcdWifiManager::DoCreateStation ( void ) const

privatevirtual

WifiTxVector ns3::AarfcdWifiManager::DoGetDataTxVector	(	WifiRemoteStation *	station,
		uint32_t	size
	)

privatevirtual

Parameters

station	the station that we need to communicate
size	size of the packet or fragment we want to send

Returns: the transmission mode to use to send a packet to the station

Note: This method is called before sending a unicast packet or a fragment of a unicast packet to decide which transmission mode to use.

Implements ns3::WifiRemoteStationManager.

Definition at line 303 of file aarfcd-wifi-manager.cc.

References ns3::WifiRemoteStationManager::GetAggregation(), ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiRemoteStationManager::GetDefaultTxPowerLevel(), ns3::WifiRemoteStationManager::GetLongRetryCount(), ns3::WifiRemoteStationManager::GetSupported(), ns3::AarfcdWifiRemoteStation::m_rate, and NS_LOG_FUNCTION.

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WifiTxVector ns3::AarfcdWifiManager::DoGetRtsTxVector ( WifiRemoteStation * station )

privatevirtual

Parameters

station the station that we need to communicate

Returns: the transmission mode to use to send an rts to the station

Note: This method is called before sending an rts to a station to decide which transmission mode to use for the rts.

Todo:: we could/should implement the Aarf algorithm for RTS only by picking a single rate within the BasicRateSet.

Implements ns3::WifiRemoteStationManager.

Definition at line 317 of file aarfcd-wifi-manager.cc.

References ns3::WifiRemoteStationManager::GetAggregation(), ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiRemoteStationManager::GetDefaultTxPowerLevel(), ns3::WifiRemoteStationManager::GetShortRetryCount(), ns3::WifiRemoteStationManager::GetSupported(), and NS_LOG_FUNCTION.

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bool ns3::AarfcdWifiManager::DoNeedRts	(	WifiRemoteStation *	station,
		Ptr< const Packet >	packet,
		bool	normally
	)

privatevirtual

Parameters

station	the station that we need to communicate
packet	the packet to send
normally	indicates whether the normal 802.11 rts enable mechanism would request that the rts is sent or not.

Returns: true if we want to use an RTS/CTS handshake for this packet before sending it, false otherwise.

Note: This method is called before a unicast packet is sent on the medium.

Reimplemented from ns3::WifiRemoteStationManager.

Definition at line 333 of file aarfcd-wifi-manager.cc.

References ns3::AarfcdWifiRemoteStation::m_rate, ns3::AarfcdWifiRemoteStation::m_rtsCounter, ns3::AarfcdWifiRemoteStation::m_rtsOn, NS_LOG_FUNCTION, and NS_LOG_INFO.

void ns3::AarfcdWifiManager::DoReportDataFailed ( WifiRemoteStation * station )

privatevirtual

It is important to realize that "recovery" mode starts after failure of the first transmission after a rate increase and ends at the first successful transmission.

Specifically, recovery mode transcends retransmissions boundaries. Fundamentally, ARF handles each data transmission independently, whether it is the initial transmission of a packet or the retransmission of a packet. The fundamental reason for this is that there is a backoff between each data transmission, be it an initial transmission or a retransmission.

Parameters

station the station that we failed to send DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 161 of file aarfcd-wifi-manager.cc.

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void ns3::AarfcdWifiManager::DoReportDataOk	(	WifiRemoteStation *	station,
		double	ackSnr,
		WifiMode	ackMode,
		double	dataSnr
	)

privatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters

station	the station that we successfully sent RTS
ackSnr	the SNR of the ACK we received
ackMode	the WifiMode the receiver used to send the ACK
dataSnr	the SNR of the DATA we sent

Implements ns3::WifiRemoteStationManager.

Definition at line 257 of file aarfcd-wifi-manager.cc.

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void ns3::AarfcdWifiManager::DoReportFinalDataFailed ( WifiRemoteStation * station )

privatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters

station the station that we failed to send DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 297 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

void ns3::AarfcdWifiManager::DoReportFinalRtsFailed ( WifiRemoteStation * station )

privatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters

station the station that we failed to send RTS

Implements ns3::WifiRemoteStationManager.

Definition at line 291 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

void ns3::AarfcdWifiManager::DoReportRtsFailed ( WifiRemoteStation * station )

privatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters

station the station that we failed to send RTS

Implements ns3::WifiRemoteStationManager.

Definition at line 155 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

void ns3::AarfcdWifiManager::DoReportRtsOk	(	WifiRemoteStation *	station,
		double	ctsSnr,
		WifiMode	ctsMode,
		double	rtsSnr
	)

privatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters

station	the station that we successfully sent RTS
ctsSnr	the SNR of the CTS we received
ctsMode	the WifiMode the receiver used to send the CTS
rtsSnr	the SNR of the RTS we sent

Implements ns3::WifiRemoteStationManager.

Definition at line 247 of file aarfcd-wifi-manager.cc.

References ns3::AarfcdWifiRemoteStation::m_rtsCounter, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

void ns3::AarfcdWifiManager::DoReportRxOk	(	WifiRemoteStation *	station,
		double	rxSnr,
		WifiMode	txMode
	)

privatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters

station	the station that sent the DATA to us
rxSnr	the SNR of the DATA we received
txMode	the WifiMode the sender used to send the DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 240 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

TypeId ns3::AarfcdWifiManager::GetTypeId ( void )

static

Definition at line 63 of file aarfcd-wifi-manager.cc.

References m_maxRtsWnd, m_maxSuccessThreshold, m_minRtsWnd, m_minSuccessThreshold, m_minTimerThreshold, m_successK, m_timerK, m_turnOffRtsAfterRateDecrease, m_turnOnRtsAfterRateIncrease, ns3::MakeBooleanAccessor(), ns3::MakeBooleanChecker(), ns3::MakeDoubleAccessor(), ns3::MakeUintegerAccessor(), and ns3::TypeId::SetParent().

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void ns3::AarfcdWifiManager::IncreaseRtsWnd ( AarfcdWifiRemoteStation * station )

private

Increase the RTS window size of the given station.

Parameters

station the station to increase RTS window

Definition at line 376 of file aarfcd-wifi-manager.cc.

References m_maxRtsWnd, ns3::AarfcdWifiRemoteStation::m_rtsWnd, and NS_LOG_FUNCTION.

Referenced by DoReportDataFailed().

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bool ns3::AarfcdWifiManager::IsLowLatency ( void ) const

privatevirtual

Returns: whether this manager is a manager designed to work in low-latency environments.

Note: In this context, low vs high latency is defined in IEEE 802.11 Rate Adaptation: A Practical Approach, by M. Lacage, M.H. Manshaei, and T. Turletti.

Implements ns3::WifiRemoteStationManager.

Definition at line 344 of file aarfcd-wifi-manager.cc.

References NS_LOG_FUNCTION.

void ns3::AarfcdWifiManager::ResetRtsWnd ( AarfcdWifiRemoteStation * station )

private

Reset the RTS window of the given station.

Parameters

station the station to reset RTS window

Definition at line 392 of file aarfcd-wifi-manager.cc.

References m_minRtsWnd, ns3::AarfcdWifiRemoteStation::m_rtsWnd, and NS_LOG_FUNCTION.

Referenced by DoReportDataFailed(), and DoReportDataOk().

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