This class implements a simple uplink scheduler for rtPS flows. More...

#include <bs-uplink-scheduler-rtps.h>

Inheritance diagram for ns3::UplinkSchedulerRtps:

Public Member Functions
	UplinkSchedulerRtps (Ptr< BaseStationNetDevice > bs)

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	GetChannelDescriptorsToUpdate (bool &, bool &, bool &, bool &)

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

void	InitOnce (void)

void	OnSetRequestedBandwidth (ServiceFlowRecord *sfr)

void	ProcessBandwidthRequest (const BandwidthRequestHeader &bwRequestHdr)

void	Schedule (void)
	Schedule function.

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)

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	ULSchedulerRTPSConnection (uint32_t &symbolsToAllocation, uint32_t &availableSymbols)
	Uplink Scheduler for rtPS connections. More...

Public Member Functions inherited from ns3::UplinkScheduler
	UplinkScheduler (Ptr< BaseStationNetDevice > bs)

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
void	AggregateObject (Ptr< Object > other)

void	Dispose (void)

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)

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount (const SimpleRefCount &o)

uint32_t	GetReferenceCount (void) const

SimpleRefCount &	operator= (const SimpleRefCount &o)

void	Ref (void) const

void	Unref (void) const

Public Member Functions inherited from ns3::ObjectBase
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::UplinkScheduler
static TypeId	GetTypeId (void)

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

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

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

Private Attributes
std::list< OfdmUlMapIe >	m_uplinkAllocations

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

virtual void	DoDispose (void)

virtual void	DoInitialize (void)

virtual void	NotifyNewAggregate (void)

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

virtual void	NotifyConstructionCompleted (void)

Detailed Description

This class implements a simple uplink scheduler for rtPS flows.

The UL-rtPS-Scheduler work in this way: At the beginning of the UL sub-frame some symbols are allocated to the rangingInterval Messages, DSA Messages, UGS grants and UGS/rtPS/nrtPS/BE poll. Then, the remaining available symbols are allocated to the all rtPS flows according to their requestedBandwidth. The bandwidth saturation control has been implemented to redistribute the resource if the sum of requestedBandwidth exceed the available bandwidth. At the end, if there are some free symbols, their are allocated to nrtPS and BE Connections.

Config Paths

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

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

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

Definition at line 53 of file bs-uplink-scheduler-rtps.h.

Member Function Documentation

void ns3::UplinkSchedulerRtps::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 83 of file bs-uplink-scheduler-rtps.cc.

References ns3::Simulator::Now().

void ns3::UplinkSchedulerRtps::ULSchedulerRTPSConnection	(	uint32_t &	symbolsToAllocation,
		uint32_t &	availableSymbols
	)

Uplink Scheduler for rtPS connections.

Parameters

symbolsToAllocation	symbols to allocation for UpLink Subframe
availableSymbols	available symbols for rtPS flows

This method represent the UL Scheduler for rtPS connections. The scheduler is designed to serve all rtPS connections that have at least one packet to transmit, every UL Subframe. The methos selects all rtPS connection that have al least one packet to transmit. To each rtPS connections are allocated, at the beginning, the bandwidth to transmit a quota of data equal to (RequestedBandwidth - GrantedBandwidth). If the sum of all pre-allocated bandwidth exceed the available symbols for rtPS connections, the Channel Saturation Control function is called to redistribute the available bandwidth.

Definition at line 503 of file bs-uplink-scheduler-rtps.cc.

References NS_LOG_INFO.

Referenced by Schedule().

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

src/wimax/model/bs-uplink-scheduler-rtps.h
src/wimax/model/bs-uplink-scheduler-rtps.cc

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Config Paths

Member Function Documentation