refer to 1609.4-2010 chapter 6.4 Vendor Specific Action (VSA) frames transmission. More...

#include "vsa-manager.h"

Inheritance diagram for ns3::VsaManager:

Collaboration diagram for ns3::VsaManager:

Classes
struct	VsaWork

Public Member Functions
	VsaManager (void)

virtual	~VsaManager (void)

void	RemoveAll (void)
	cancel all VSA transmissions More...

void	RemoveByChannel (uint32_t channelNumber)

void	RemoveByOrganizationIdentifier (const OrganizationIdentifier &oi)

void	SendVsa (const VsaInfo &vsaInfo)

void	SetWaveNetDevice (Ptr< WaveNetDevice > device)

void	SetWaveVsaCallback (Callback< bool, Ptr< const Packet >, const Address &, uint32_t, uint32_t > vsaCallback)

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...

bool	IsInitialized (void) const
	Check if the object has been initialized. 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::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	DoDispose (void)
	Destructor implementation. More...

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

void	DoRepeat (VsaWork *vsa)

void	DoSendVsa (enum VsaTransmitInterval interval, uint32_t channel, Ptr< Packet > vsc, OrganizationIdentifier oi, Mac48Address peer)

bool	ReceiveVsc (Ptr< WifiMac > mac, const OrganizationIdentifier &oi, Ptr< const Packet > vsc, const Address &src)

Private Attributes
Ptr< WaveNetDevice >	m_device

Callback< bool, Ptr< const Packet >, const Address &, uint32_t, uint32_t >	m_vsaReceived

std::vector< VsaWork * >	m_vsas

Static Private Attributes
static const uint32_t	VSA_REPEAT_PERIOD = 5

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

refer to 1609.4-2010 chapter 6.4 Vendor Specific Action (VSA) frames transmission.

The channel interval and channel number indicating how to transmit VSA frames. However making the VSA transmitted strictly in required channel interval and channel number is hard to achieve. For example, if current channel is assigned “Alternating Access” and higher layer wants VSA transmitted only in CCHI (VSA_TRANSMIT_IN_CCHI), but when packet is dequeued from the internal queue of MAC layer in SCHI and can contend for channel access, how to deal with this case? Reinserting into the head of the queue and dequeuing the second packet is not a good choice, because it will require queue traversal. Reinserting the packet into the tail of the queue is worse, because it will make queue not in order. And both solutions may affect many MAC classes of Wifi module. Current approach is to guarantee packets can be inserted into the MAC internal queue strictly in channel interval and channel number required by higher layers. This solution will result in high probability that packets will be sent in channel interval as higher layer wants, while some packet may be sent practically in other channel interval that not follows the requirement of higher layer request due to queue delay of MAC layer. Therefore, we suggest users assign alternating access for sending VSAs in CCH Interval (VSA_TRANSMIT_IN_CCHI) or SCH Interval (VSA_TRANSMIT_IN_SCHI), and assign continuous access or extended access for sending VSAs in both interval (VSA_TRANSMIT_IN_BOTHI) to avoid the above cases.

Config Paths

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

"/NodeList/[i]/DeviceList/[i]/$ns3::WaveNetDevice/VsaManager"

No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 72 bytes (on a 64-bit architecture).

Definition at line 104 of file vsa-manager.h.

Constructor & Destructor Documentation

ns3::VsaManager::VsaManager ( void )

Definition at line 46 of file vsa-manager.cc.

References m_vsaReceived.

ns3::VsaManager::~VsaManager ( void )

virtual

Definition at line 52 of file vsa-manager.cc.

Member Function Documentation

void ns3::VsaManager::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 58 of file vsa-manager.cc.

References m_device, NS_LOG_FUNCTION, and RemoveAll().

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void ns3::VsaManager::DoInitialize ( void )

privatevirtual

Initialize() implementation.

This method is called only once by Initialize(). If the user calls Initialize() multiple times, DoInitialize() is called only the first time.

Subclasses are expected to override this method and chain up to their parent's implementation once they are done. It is safe to call GetObject() and AggregateObject() from within this method.

Reimplemented from ns3::Object.

Definition at line 66 of file vsa-manager.cc.

References ns3::WaveNetDevice::GetMacs(), m_device, ns3::MakeCallback(), and ReceiveVsc().

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void ns3::VsaManager::DoRepeat ( VsaWork * vsa )

private

Parameters

vsa	the specific VSA repeat work

Repeat to send VSA frames

Definition at line 117 of file vsa-manager.cc.

References ns3::VsaManager::VsaWork::channelNumber, ns3::Packet::Copy(), DoSendVsa(), NS_LOG_FUNCTION, ns3::VsaManager::VsaWork::oi, ns3::VsaManager::VsaWork::peer, ns3::VsaManager::VsaWork::repeat, ns3::VsaManager::VsaWork::repeatPeriod, ns3::Simulator::Schedule(), ns3::VsaManager::VsaWork::sentInterval, and ns3::VsaManager::VsaWork::vsc.

Referenced by SendVsa().

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void ns3::VsaManager::DoSendVsa	(	enum VsaTransmitInterval	interval,
		uint32_t	channel,
		Ptr< Packet >	vsc,
		OrganizationIdentifier	oi,
		Mac48Address	peer
	)

private

Parameters

interval	the specific channel interval for VSA transmission
channel	the specific channel number for VSA transmission
vsc	the data field of VSA frame that contains vendor specific content
oi	the Organization Identifier for VSA frame
peer	the destination address

Definition at line 125 of file vsa-manager.cc.

References ns3::Packet::AddPacketTag(), ns3::WaveNetDevice::GetChannelCoordinator(), ns3::WaveNetDevice::GetChannelManager(), ns3::WaveNetDevice::GetChannelScheduler(), ns3::WaveNetDevice::GetMac(), m_device, third::mac, ns3::ChannelCoordinator::NeedTimeToCchInterval(), ns3::ChannelCoordinator::NeedTimeToSchInterval(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Simulator::Schedule(), ns3::Seconds(), ns3::OcbWifiMac::SendVsc(), ns3::WifiTxVector::SetChannelWidth(), ns3::WifiTxVector::SetMode(), ns3::SocketPriorityTag::SetPriority(), ns3::WifiTxVector::SetTxPowerLevel(), ns3::VSA_TRANSMIT_IN_BOTHI, ns3::VSA_TRANSMIT_IN_CCHI, and ns3::VSA_TRANSMIT_IN_SCHI.

Referenced by DoRepeat(), and SendVsa().

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TypeId ns3::VsaManager::GetTypeId ( void )

static

Definition at line 36 of file vsa-manager.cc.

References ns3::TypeId::SetParent().

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bool ns3::VsaManager::ReceiveVsc	(	Ptr< WifiMac >	mac,
		const OrganizationIdentifier &	oi,
		Ptr< const Packet >	vsc,
		const Address &	src
	)

private

Parameters

mac	the MAC entity which receives VSA frame
oi	the Organization Identifier of received VSA frame
vsc	the vendor specific content of received VSA frame
src	the source address of received VSA frame

Definition at line 262 of file vsa-manager.cc.

References ns3::OrganizationIdentifier::GetManagementId(), m_vsaReceived, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by DoInitialize().

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