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

#include <bs-scheduler-rtps.h>

Inheritance diagram for ns3::BSSchedulerRtps:

Public Member Functions
	BSSchedulerRtps (Ptr< BaseStationNetDevice > bs)

void	AddDownlinkBurst (Ptr< const WimaxConnection > connection, uint8_t diuc, WimaxPhy::ModulationType modulationType, Ptr< PacketBurst > burst)

void	BSSchedulerBasicConnection (uint32_t &availableSymbols)

void	BSSchedulerBEConnection (uint32_t &availableSymbols)

void	BSSchedulerBroadcastConnection (uint32_t &availableSymbols)

void	BSSchedulerInitialRangingConnection (uint32_t &availableSymbols)

void	BSSchedulerNRTPSConnection (uint32_t &availableSymbols)

void	BSSchedulerPrimaryConnection (uint32_t &availableSymbols)

void	BSSchedulerRTPSConnection (uint32_t &availableSymbols)
	Downlink Scheduler for rtPS connections. More...

void	BSSchedulerUGSConnection (uint32_t &availableSymbols)

Ptr< PacketBurst >	CreateUgsBurst (ServiceFlow *serviceFlow, WimaxPhy::ModulationType modulationType, uint32_t availableSymbols)

std::list< std::pair < OfdmDlMapIe , Ptr < PacketBurst > > >	GetDownlinkBursts (void) const

void	Schedule (void)
	Schedule function. More...

bool	SelectBEConnection (Ptr< WimaxConnection > &connection)
	Check for BE connections that have packets to transmit.

bool	SelectConnection (Ptr< WimaxConnection > &connection)

bool	SelectIRandBCConnection (Ptr< WimaxConnection > &connection)
	Check for IR and Broadcast connections that have packets to transmit. More...

bool	SelectMenagementConnection (Ptr< WimaxConnection > &connection)
	Check for Basic and Primary connections that have packets to transmit. More...

bool	SelectNRTPSConnection (Ptr< WimaxConnection > &connection)
	Check for nrtPS connections that have packets to transmit.

bool	SelectRTPSConnection (Ptr< WimaxConnection > &connection)
	Check for rtPS connections that have packets to transmit.

bool	SelectUGSConnection (Ptr< WimaxConnection > &connection)
	Check for UGS connections that have packets to transmit. More...

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

bool	CheckForFragmentation (Ptr< WimaxConnection > connection, int availableSymbols, WimaxPhy::ModulationType modulationType)

virtual Ptr< BaseStationNetDevice >	GetBs (void)

virtual void	SetBs (Ptr< BaseStationNetDevice > bs)

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::BSScheduler
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< std::pair < OfdmDlMapIe , Ptr < PacketBurst > > >	m_downlinkBursts

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 downlink scheduler for rtPS flows.

The DL-rtPS-Scheduler assigns the available bandwidth the service flows in the following order: IR Connections, Broadcast Connections, Basic and Primary Connections, UGS Connections, rtPS Connections, nrtPS Connections, BE Connections. The IR, Broadcast and Basic/Primary Connections must transmit all packet in the queue. The UGS flows can transmit the quota of date equal to the "Grant Size" (that is one of service flows QoS parameters) according to their requested MaxLatency (another QoS parameter). All rtPS flows are able to transmit all packet in the queue according to the available bandwidth. The bandwidth saturation control has been implemented to redistribute the effective available bandwidth to all rtPS flows that have at least one packet to transmit. The remaining bandwidth is allocated to rntPS and BE Connections.

Doxygen introspection did not find any typical Config paths.
No Attributes are defined for this type.
No TraceSources are defined for this type.

Definition at line 58 of file bs-scheduler-rtps.h.

Member Function Documentation

void ns3::BSSchedulerRtps::BSSchedulerRTPSConnection ( uint32_t & availableSymbols )

Downlink Scheduler for rtPS connections.

Parameters

availableSymbols available symbols for rtPS flows

This method represent the DL Scheduler for rtPS connections. The scheduler is designed to serve all rtPS connections that have at least one packet to transmit, every DL Subframe. To each rtPS connections are allocated, at the beginning, the bandwidth to transmit a quota of data equal to the queue length. 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 481 of file bs-scheduler-rtps.cc.

References ns3::Simulator::Now(), NS_ASSERT_MSG, NS_LOG_INFO, and ns3::ServiceFlowRecord::SetDlTimeStamp().

Referenced by Schedule().

void ns3::BSSchedulerRtps::Schedule ( void )

virtual

Schedule function.

A DownLink Scheduler for rtPS Flows.

The DL Scheduler assigns the available bandwidth in the following order:

IR Connections
Broadcast Connections
Basic and Primary Connections
UGS Connections
rtPS Connections
nrtPS Connections
BE Connections All rtPS flows that have packets in the queue can transmit at least one packet, according to the available bandwidth.

Implements ns3::BSScheduler.

Definition at line 128 of file bs-scheduler-rtps.cc.

References BSSchedulerRTPSConnection(), and NS_LOG_DEBUG.

bool ns3::BSSchedulerRtps::SelectIRandBCConnection ( Ptr< WimaxConnection > & connection )

Check for IR and Broadcast connections that have packets to transmit.

Parameters

connection will point to a initial ranging or broadcast connection wich have packets to transmit

Returns: false if no initial ranging or broadcast connection has packets to transmit, true otherwise

bool ns3::BSSchedulerRtps::SelectMenagementConnection ( Ptr< WimaxConnection > & connection )

Check for Basic and Primary connections that have packets to transmit.

Parameters

connection will point to a basic or primary connection wich have packets to transmit

Returns: false if no basic or primary connection has packets to transmit, true otherwise

bool ns3::BSSchedulerRtps::SelectUGSConnection ( Ptr< WimaxConnection > & connection )

Check for UGS connections that have packets to transmit.

The method return the UGS connection that have packets to transmits, according to the MaxLatency specifications.

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

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

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation