This class implements a Migration-based Quality of Service uplink scheduler(MBQoS). More...

#include "bs-uplink-scheduler-mbqos.h"

Inheritance diagram for ns3::UplinkSchedulerMBQoS:

Collaboration diagram for ns3::UplinkSchedulerMBQoS:

Public Member Functions
	UplinkSchedulerMBQoS ()

	UplinkSchedulerMBQoS (Time time)

	~UplinkSchedulerMBQoS (void)

void	AddUplinkAllocation (OfdmUlMapIe &ulMapIe, const uint32_t &allocationSize, uint32_t &symbolsToAllocation, uint32_t &availableSymbols)

void	AllocateInitialRangingInterval (uint32_t &symbolsToAllocation, uint32_t &availableSymbols)

uint32_t	CalculateAllocationStartTime (void)

void	CheckDeadline (uint32_t &availableSymbols)
	Check deadline from jobs. Migrate requests if necessary. More...

void	CheckMinimumBandwidth (uint32_t &availableSymbols)
	Check if Minimum bandwidth is guarantee. Migrate requests if necessary. More...

uint32_t	CountSymbolsJobs (Ptr< UlJob > job)

uint32_t	CountSymbolsQueue (std::list< Ptr< UlJob > > jobs)

Ptr< UlJob >	CreateUlJob (SSRecord *ssRecord, enum ServiceFlow::SchedulingType schedType, ReqType reqType)

Ptr< UlJob >	DequeueJob (UlJob::JobPriority priority)
	Dequeue a job from a priority queue. More...

Time	DetermineDeadline (ServiceFlow *serviceFlow)
	Calculates deadline of a request. More...

void	EnqueueJob (UlJob::JobPriority priority, Ptr< UlJob > job)
	Enqueue a job in a priority queue. More...

void	GetChannelDescriptorsToUpdate (bool &, bool &, bool &, bool &)
	Determines if channel descriptors sent in the current frame are required to be updated. More...

uint32_t	GetPendingSize (ServiceFlow *serviceFlow)

std::list< OfdmUlMapIe >	GetUplinkAllocations (void) const

void	InitOnce (void)
	This method is called once to initialize window. More...

void	OnSetRequestedBandwidth (ServiceFlowRecord *sfr)

void	ProcessBandwidthRequest (const BandwidthRequestHeader &bwRequestHdr)

void	Schedule (void)

void	ServiceBandwidthRequests (const SSRecord *ssRecord, enum ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe, const WimaxPhy::ModulationType modulationType, uint32_t &symbolsToAllocation, uint32_t &availableSymbols)

bool	ServiceBandwidthRequests (ServiceFlow *serviceFlow, enum ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe, const WimaxPhy::ModulationType modulationType, uint32_t &symbolsToAllocation, uint32_t &availableSymbols)

bool	ServiceBandwidthRequestsBytes (ServiceFlow *serviceFlow, enum ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe, const WimaxPhy::ModulationType modulationType, uint32_t &symbolsToAllocation, uint32_t &availableSymbols, uint32_t allocationSizeBytes)

void	ServiceUnsolicitedGrants (const SSRecord *ssRecord, enum ServiceFlow::SchedulingType schedulingType, OfdmUlMapIe &ulMapIe, const WimaxPhy::ModulationType modulationType, uint32_t &symbolsToAllocation, uint32_t &availableSymbols)

void	SetupServiceFlow (SSRecord ssRecord, ServiceFlow serviceFlow)

void	UplinkSchedWindowTimer (void)
	Reset the current window. More...

Public Member Functions inherited from ns3::UplinkScheduler
	UplinkScheduler (void)

	UplinkScheduler (Ptr< BaseStationNetDevice > bs)

virtual	~UplinkScheduler (void)

virtual Ptr< BaseStationNetDevice >	GetBs (void)

virtual Time	GetDcdTimeStamp (void) const

virtual bool	GetIsInvIrIntrvlAllocated (void) const

virtual bool	GetIsIrIntrvlAllocated (void) const

virtual uint8_t	GetNrIrOppsAllocated (void) const

virtual Time	GetTimeStampIrInterval (void)

virtual Time	GetUcdTimeStamp (void) const

virtual void	SetBs (Ptr< BaseStationNetDevice > bs)

virtual void	SetDcdTimeStamp (Time dcdTimeStamp)

virtual void	SetIsInvIrIntrvlAllocated (bool isInvIrIntrvlAllocated)

virtual void	SetIsIrIntrvlAllocated (bool isIrIntrvlAllocated)

virtual void	SetNrIrOppsAllocated (uint8_t nrIrOppsAllocated)

virtual void	SetTimeStampIrInterval (Time timeStampIrInterval)

virtual void	SetUcdTimeStamp (Time ucdTimeStamp)

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::UplinkScheduler
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 Attributes
std::list< OfdmUlMapIe >	m_uplinkAllocations

std::list< Ptr< UlJob > >	m_uplinkJobs_high

std::list< Ptr< UlJob > >	m_uplinkJobs_inter

std::list< Ptr< UlJob > >	m_uplinkJobs_low

Time	m_windowInterval

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

virtual void	DoDispose (void)
	Destructor implementation. 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

This class implements a Migration-based Quality of Service uplink scheduler(MBQoS).

This uplink scheduler uses three queues, the low priority queue, the intermediate queue and the high priority queue. The scheduler serves the requests in strict priority order from the high priority queue to the low priority queue. The low priority queue stores the bandwidth requests of the BE service flow. The intermediate queue holds bandwidth requests sent by rtPS and by nrtPS connections. rtPS and nrtPS requests can migrate to the high priority queue to guarantee that their QoS requirements are met. Besides the requests migrated from the intermediate queue, the high priority queue stores periodic grants and unicast request opportunities that must be scheduled in the following frame. To guarantee the maximum delay requirement, the BS assigns a deadline to each rtPS bandwidth request in the intermediate queue. The minimum bandwidth requirement of both rtPS and nrtPS connections is guaranteed over a window of duration T . Implementation of uplink scheduler: Freitag, J.; da Fonseca, N.L.S., "Uplink Scheduling with Quality of Service in IEEE 802.16 Networks," Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE , vol., no., pp.2503-2508, 26-30 Nov. 2007 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4411386&isnumber=4410910

Config Paths

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

"/NodeList/[i]/DeviceList/[i]/$ns3::WimaxNetDevice/$ns3::BaseStationNetDevice/UplinkScheduler/$ns3::UplinkSchedulerMBQoS"
"/NodeList/[i]/DeviceList/[i]/$ns3::BaseStationNetDevice/UplinkScheduler/$ns3::UplinkSchedulerMBQoS"

Attributes

WindowInterval: The time to wait to reset window
- Set with class: ns3::TimeValue
- Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
- Initial value: +1000000000.0ns
- Flags: construct write read

No TraceSources are defined for this type.
Size of this type is 160 bytes (on a 64-bit architecture).

Definition at line 69 of file bs-uplink-scheduler-mbqos.h.

Constructor & Destructor Documentation

ns3::UplinkSchedulerMBQoS::UplinkSchedulerMBQoS ( )

Definition at line 38 of file bs-uplink-scheduler-mbqos.cc.

ns3::UplinkSchedulerMBQoS::UplinkSchedulerMBQoS ( Time time )

Definition at line 42 of file bs-uplink-scheduler-mbqos.cc.

ns3::UplinkSchedulerMBQoS::~UplinkSchedulerMBQoS ( void )

Definition at line 48 of file bs-uplink-scheduler-mbqos.cc.

References m_uplinkAllocations, and ns3::UplinkScheduler::SetBs().

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Member Function Documentation

void ns3::UplinkSchedulerMBQoS::AddUplinkAllocation	(	OfdmUlMapIe &	ulMapIe,
		const uint32_t &	allocationSize,
		uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols
	)

virtual

Implements ns3::UplinkScheduler.

Definition at line 149 of file bs-uplink-scheduler-mbqos.cc.

References m_uplinkAllocations, ns3::OfdmUlMapIe::SetDuration(), and ns3::OfdmUlMapIe::SetStartTime().

Referenced by AllocateInitialRangingInterval(), Schedule(), ServiceBandwidthRequests(), ServiceBandwidthRequestsBytes(), and ServiceUnsolicitedGrants().

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void ns3::UplinkSchedulerMBQoS::AllocateInitialRangingInterval	(	uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols
	)

virtual

Implements ns3::UplinkScheduler.

Definition at line 969 of file bs-uplink-scheduler-mbqos.cc.

References AddUplinkAllocation(), CalculateAllocationStartTime(), ns3::UplinkScheduler::GetBs(), ns3::UplinkScheduler::GetNrIrOppsAllocated(), ns3::UplinkScheduler::GetTimeStampIrInterval(), ns3::Simulator::Now(), NS_LOG_DEBUG, ns3::Seconds(), ns3::OfdmUlMapIe::SetCid(), ns3::UplinkScheduler::SetIsIrIntrvlAllocated(), ns3::UplinkScheduler::SetNrIrOppsAllocated(), ns3::OfdmUlMapIe::SetStartTime(), ns3::UplinkScheduler::SetTimeStampIrInterval(), ns3::OfdmUlMapIe::SetUiuc(), and ns3::OfdmUlBurstProfile::UIUC_INITIAL_RANGING.

Referenced by Schedule().

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uint32_t ns3::UplinkSchedulerMBQoS::CalculateAllocationStartTime ( void )

virtual

Implements ns3::UplinkScheduler.

Definition at line 143 of file bs-uplink-scheduler-mbqos.cc.

References ns3::UplinkScheduler::GetBs().

Referenced by AllocateInitialRangingInterval().

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void ns3::UplinkSchedulerMBQoS::CheckDeadline ( uint32_t & availableSymbols )

Check deadline from jobs. Migrate requests if necessary.

Parameters

availableSymbols available symbols in the uplink frame This method verifies for each rtPS request whether it should be migrated to the high priority queue or not. The conditions for migration are: request deadline expires in the frame following the next one, and the amount of bandwidth requested is less than or equal to the amount of available bytes in the next uplink frame.

Definition at line 650 of file bs-uplink-scheduler-mbqos.cc.

References EnqueueJob(), visualizer.higcontainer::frame, ns3::UplinkScheduler::GetBs(), ns3::UlJob::HIGH, m_uplinkJobs_inter, ns3::Simulator::Now(), NS_LOG_DEBUG, and ns3::ServiceFlow::SF_TYPE_RTPS.

Referenced by Schedule().

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void ns3::UplinkSchedulerMBQoS::CheckMinimumBandwidth ( uint32_t & availableSymbols )

Check if Minimum bandwidth is guarantee. Migrate requests if necessary.

Parameters

availableSymbols available symbols in the uplink frame. This method first calculate a priority value for each request in the intermediate queue. Then, sorts the intermediate queue according to the priority values. Finally, while there is available bandwidth, the scheduler migrate the requests to the high priority queue.

Definition at line 738 of file bs-uplink-scheduler-mbqos.cc.

Referenced by Schedule().

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uint32_t ns3::UplinkSchedulerMBQoS::CountSymbolsJobs ( Ptr< UlJob > job )

Parameters

job job

Count the amount of symbols of a job.

Definition at line 572 of file bs-uplink-scheduler-mbqos.cc.

References ns3::UplinkScheduler::GetBs(), ns3::ServiceFlowRecord::GetGrantedBandwidth(), ns3::ServiceFlowRecord::GetGrantTimeStamp(), ns3::SSRecord::GetModulationType(), ns3::ServiceFlow::GetRecord(), ns3::ServiceFlowRecord::GetRequestedBandwidth(), ns3::ServiceFlow::GetSduSize(), ns3::ServiceFlow::GetUnsolicitedPollingInterval(), ns3::Simulator::Now(), and ns3::UNICAST_POLLING.

Referenced by CheckMinimumBandwidth(), and CountSymbolsQueue().

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uint32_t ns3::UplinkSchedulerMBQoS::CountSymbolsQueue ( std::list< Ptr< UlJob > > jobs )

Parameters

jobs	List of jobs

Sum the amount of symbols of each job of a queue

Definition at line 547 of file bs-uplink-scheduler-mbqos.cc.

References CountSymbolsJobs(), and list.

Referenced by Schedule().

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Ptr< UlJob > ns3::UplinkSchedulerMBQoS::CreateUlJob	(	SSRecord *	ssRecord,
		enum ServiceFlow::SchedulingType	schedType,
		ReqType	reqType
	)

Parameters

ssRecord	Subscriber station record
schedType	Service flow type
reqType	Type of packet

Create and fill information of a job.

Definition at line 561 of file bs-uplink-scheduler-mbqos.cc.

References ns3::SSRecord::GetServiceFlows().

Referenced by Schedule().

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Ptr< UlJob > ns3::UplinkSchedulerMBQoS::DequeueJob ( UlJob::JobPriority priority )

Dequeue a job from a priority queue.

Parameters

priority Priority of queue

Definition at line 629 of file bs-uplink-scheduler-mbqos.cc.

References ns3::UlJob::HIGH, ns3::UlJob::INTERMEDIATE, ns3::UlJob::LOW, m_uplinkJobs_high, m_uplinkJobs_inter, and m_uplinkJobs_low.

Time ns3::UplinkSchedulerMBQoS::DetermineDeadline ( ServiceFlow * serviceFlow )

Calculates deadline of a request.

Parameters

serviceFlow Service flow of connection

Definition at line 1147 of file bs-uplink-scheduler-mbqos.cc.

References ns3::ServiceFlowRecord::GetLastGrantTime(), ns3::ServiceFlow::GetMaximumLatency(), ns3::ServiceFlow::GetRecord(), and ns3::MilliSeconds().

Referenced by ProcessBandwidthRequest().

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void ns3::UplinkSchedulerMBQoS::EnqueueJob	(	UlJob::JobPriority	priority,
		Ptr< UlJob >	job
	)

Enqueue a job in a priority queue.

Parameters

priority	Priority of queue
job	job information

Definition at line 613 of file bs-uplink-scheduler-mbqos.cc.

References ns3::UlJob::HIGH, ns3::UlJob::INTERMEDIATE, ns3::UlJob::LOW, m_uplinkJobs_high, m_uplinkJobs_inter, and m_uplinkJobs_low.

Referenced by CheckDeadline(), CheckMinimumBandwidth(), ProcessBandwidthRequest(), and Schedule().

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void ns3::UplinkSchedulerMBQoS::GetChannelDescriptorsToUpdate	(	bool &	updateDcd,
		bool &	updateUcd,
		bool &	sendDcd,
		bool &	sendUcd
	)

virtual

Determines if channel descriptors sent in the current frame are required to be updated.

Implements ns3::UplinkScheduler.

Definition at line 84 of file bs-uplink-scheduler-mbqos.cc.

References ns3::UplinkScheduler::GetBs(), ns3::UplinkScheduler::GetDcdTimeStamp(), ns3::UplinkScheduler::GetUcdTimeStamp(), ns3::Simulator::Now(), ns3::UplinkScheduler::SetDcdTimeStamp(), and ns3::UplinkScheduler::SetUcdTimeStamp().

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uint32_t ns3::UplinkSchedulerMBQoS::GetPendingSize ( ServiceFlow * serviceFlow )

Definition at line 1060 of file bs-uplink-scheduler-mbqos.cc.

References list, and m_uplinkJobs_inter.

Referenced by ProcessBandwidthRequest().

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TypeId ns3::UplinkSchedulerMBQoS::GetTypeId ( void )

static

Definition at line 55 of file bs-uplink-scheduler-mbqos.cc.

References m_windowInterval, ns3::MakeTimeAccessor(), ns3::MakeTimeChecker(), ns3::Seconds(), and ns3::TypeId::SetParent().

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std::list< OfdmUlMapIe > ns3::UplinkSchedulerMBQoS::GetUplinkAllocations ( void ) const

virtual

Reimplemented from ns3::UplinkScheduler.

Definition at line 78 of file bs-uplink-scheduler-mbqos.cc.

References m_uplinkAllocations.

void ns3::UplinkSchedulerMBQoS::InitOnce ( void )

virtual

This method is called once to initialize window.

Implements ns3::UplinkScheduler.

Definition at line 72 of file bs-uplink-scheduler-mbqos.cc.

References UplinkSchedWindowTimer().

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void ns3::UplinkSchedulerMBQoS::OnSetRequestedBandwidth ( ServiceFlowRecord * sfr )

virtual

Implements ns3::UplinkScheduler.

Definition at line 1156 of file bs-uplink-scheduler-mbqos.cc.

void ns3::UplinkSchedulerMBQoS::ProcessBandwidthRequest ( const BandwidthRequestHeader & bwRequestHdr )

virtual

Implements ns3::UplinkScheduler.

Definition at line 1082 of file bs-uplink-scheduler-mbqos.cc.

References ns3::DATA, DetermineDeadline(), EnqueueJob(), ns3::BandwidthRequestHeader::GetBr(), ns3::UplinkScheduler::GetBs(), ns3::BandwidthRequestHeader::GetCid(), ns3::SSRecord::GetMacAddress(), GetPendingSize(), ns3::ServiceFlow::GetSchedulingType(), ns3::Time::GetSeconds(), ns3::UlJob::INTERMEDIATE, ns3::UlJob::LOW, ns3::Simulator::Now(), NS_LOG_DEBUG, ns3::ServiceFlow::SF_TYPE_BE, ns3::ServiceFlow::SF_TYPE_NRTPS, and ns3::ServiceFlow::SF_TYPE_RTPS.

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void ns3::UplinkSchedulerMBQoS::Schedule ( void )

virtual

Implements ns3::UplinkScheduler.

Definition at line 218 of file bs-uplink-scheduler-mbqos.cc.

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void ns3::UplinkSchedulerMBQoS::ServiceBandwidthRequests	(	const SSRecord *	ssRecord,
		enum ServiceFlow::SchedulingType	schedulingType,
		OfdmUlMapIe &	ulMapIe,
		const WimaxPhy::ModulationType	modulationType,
		uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols
	)

virtual

Implements ns3::UplinkScheduler.

Definition at line 883 of file bs-uplink-scheduler-mbqos.cc.

References ns3::SSRecord::GetServiceFlows().

Referenced by Schedule().

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bool ns3::UplinkSchedulerMBQoS::ServiceBandwidthRequests	(	ServiceFlow *	serviceFlow,
		enum ServiceFlow::SchedulingType	schedulingType,
		OfdmUlMapIe &	ulMapIe,
		const WimaxPhy::ModulationType	modulationType,
		uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols
	)

virtual

bool ns3::UplinkSchedulerMBQoS::ServiceBandwidthRequestsBytes	(	ServiceFlow *	serviceFlow,
		enum ServiceFlow::SchedulingType	schedulingType,
		OfdmUlMapIe &	ulMapIe,
		const WimaxPhy::ModulationType	modulationType,
		uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols,
		uint32_t	allocationSizeBytes
	)

Definition at line 495 of file bs-uplink-scheduler-mbqos.cc.

References AddUplinkAllocation(), ns3::UplinkScheduler::GetBs(), ns3::ServiceFlow::GetConnection(), ns3::ServiceFlow::GetRecord(), ns3::ServiceFlowRecord::GetRequestedBandwidth(), ns3::ServiceFlow::GetSchedulingTypeStr(), ns3::ServiceFlow::GetSfid(), ns3::Simulator::Now(), NS_LOG_DEBUG, ns3::ServiceFlowRecord::UpdateBwSinceLastExpiry(), ns3::ServiceFlowRecord::UpdateGrantedBandwidth(), ns3::ServiceFlowRecord::UpdateGrantedBandwidthTemp(), and ns3::ServiceFlowRecord::UpdateRequestedBandwidth().

Referenced by Schedule().

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void ns3::UplinkSchedulerMBQoS::ServiceUnsolicitedGrants	(	const SSRecord *	ssRecord,
		enum ServiceFlow::SchedulingType	schedulingType,
		OfdmUlMapIe &	ulMapIe,
		const WimaxPhy::ModulationType	modulationType,
		uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols
	)