This class manage the bandwidth request and grant mechanism. More...

#include <bandwidth-manager.h>

Inheritance diagram for ns3::BandwidthManager:

Collaboration diagram for ns3::BandwidthManager:

Public Member Functions
	BandwidthManager (Ptr< WimaxNetDevice > device)

	~BandwidthManager (void)

uint32_t	CalculateAllocationSize (const SSRecord ssRecord, const ServiceFlow serviceFlow)

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

uint32_t	GetSymbolsPerFrameAllocated (void)

void	ProcessBandwidthRequest (const BandwidthRequestHeader &bwRequestHdr)

ServiceFlow *	SelectFlowForRequest (uint32_t &bytesToRequest)

void	SendBandwidthRequest (uint8_t uiuc, uint16_t allocationSize)

void	SetSubframeRatio (void)

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

virtual	~Object ()

void	AggregateObject (Ptr< Object > other)

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

AggregateIterator	GetAggregateIterator (void) const

virtual TypeId	GetInstanceTypeId (void) const

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Static Public Member Functions
static TypeId	GetTypeId (void)

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

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

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

Private Member Functions
	BandwidthManager (const BandwidthManager &)

BandwidthManager &	operator= (const BandwidthManager &)

Private Attributes
Ptr< WimaxNetDevice >	m_device

uint16_t	m_nrBwReqsSent

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

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

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

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

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

Detailed Description

This class manage the bandwidth request and grant mechanism.

The bandwidth request and grant mechanism is supported by the Bandwidth Manager. Both BS and SS maintain a bandwidth manager. Furthermore BS's bandwidth manager works together with the uplink scheduler to determine total bandwidth available and allocation size for each service flow. Bandwidth request mechanism is a key feature of the WiMAX scheduler since all three non-UGS services explicitly request for bandwidth by sending a bandwidth request to BS.

Config Paths

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

/NodeList/[i]/DeviceList/[i]/$ns3::WimaxNetDevice/BandwidthManager

No Attributes are defined for this type.
No TraceSources are defined for this type.

Definition at line 54 of file bandwidth-manager.h.

Constructor & Destructor Documentation

ns3::BandwidthManager::BandwidthManager ( Ptr< WimaxNetDevice > device )

Definition at line 49 of file bandwidth-manager.cc.

ns3::BandwidthManager::~BandwidthManager ( void )

Definition at line 55 of file bandwidth-manager.cc.

ns3::BandwidthManager::BandwidthManager ( const BandwidthManager & )

private

Member Function Documentation

uint32_t ns3::BandwidthManager::CalculateAllocationSize	(	const SSRecord *	ssRecord,
		const ServiceFlow *	serviceFlow
	)

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

References ns3::ServiceFlowRecord::GetGrantSize(), ns3::ServiceFlowRecord::GetGrantTimeStamp(), ns3::SSRecord::GetHasServiceFlowUgs(), ns3::SSRecord::GetPollMeBit(), ns3::ServiceFlow::GetRecord(), ns3::ServiceFlow::GetSchedulingType(), ns3::ServiceFlow::GetUnsolicitedGrantInterval(), ns3::ServiceFlow::GetUnsolicitedPollingInterval(), m_device, ns3::Simulator::Now(), NS_FATAL_ERROR, ns3::ServiceFlowRecord::SetGrantTimeStamp(), ns3::ServiceFlow::SF_TYPE_BE, ns3::ServiceFlow::SF_TYPE_NRTPS, ns3::ServiceFlow::SF_TYPE_RTPS, and ns3::ServiceFlow::SF_TYPE_UGS.

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void ns3::BandwidthManager::DoDispose ( void )

virtual

This method is called by Object::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 60 of file bandwidth-manager.cc.

References m_device.

uint32_t ns3::BandwidthManager::GetSymbolsPerFrameAllocated ( void )

Definition at line 217 of file bandwidth-manager.cc.

References m_device, and ns3::ServiceFlow::SF_TYPE_ALL.

TypeId ns3::BandwidthManager::GetTypeId ( void )

static

Definition at line 42 of file bandwidth-manager.cc.

References ns3::TypeId::SetParent().

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