fading loss model based on precalculated fading traces More...

#include <trace-fading-loss-model.h>

Inheritance diagram for ns3::TraceFadingLossModel:

Collaboration diagram for ns3::TraceFadingLossModel:

Public Types
typedef std::pair< Ptr< const MobilityModel >, Ptr< const MobilityModel > >	ChannelRealizationId_t
	The couple of mobility mnode that form a fading channel realization.

Public Member Functions
	TraceFadingLossModel ()
virtual	~TraceFadingLossModel ()
int64_t	AssignStreams (int64_t stream)
virtual void	DoStart (void)
Public Member Functions inherited from ns3::SpectrumPropagationLossModel
	SpectrumPropagationLossModel ()
virtual	~SpectrumPropagationLossModel ()
Ptr< SpectrumValue >	CalcRxPowerSpectralDensity (Ptr< const SpectrumValue > txPsd, Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const
void	SetNext (Ptr< SpectrumPropagationLossModel > next)
Public Member Functions inherited from ns3::Object
	Object ()
virtual	~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	Start (void)
Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	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
virtual	~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 ()

Private Types
typedef std::vector < FadingTraceSample >	FadingTrace
typedef std::vector< double >	FadingTraceSample

Private Member Functions
Ptr< SpectrumValue >	DoCalcRxPowerSpectralDensity (Ptr< const SpectrumValue > txPsd, Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const
double	GetValue (int subChannel, double speed)
	Get the value for a particular sub channel and a given speed.
void	LoadTrace ()
void	SetTraceFileName (std::string fileName)
void	SetTraceLength (Time t)

Private Attributes
FadingTrace	m_fadingTrace
Time	m_lastWindowUpdate
uint8_t	m_rbNum
uint32_t	m_samplesNum
std::map < ChannelRealizationId_t, Ptr < UniformRandomVariable > >	m_startVariableMap
uint8_t	m_timeGranularity
std::string	m_traceFile
Time	m_traceLength
std::map < ChannelRealizationId_t, int >	m_windowOffsetsMap
Time	m_windowSize

Additional Inherited Members
Protected Member Functions inherited from ns3::SpectrumPropagationLossModel
virtual void	DoDispose ()

Detailed Description

fading loss model based on precalculated fading traces

This type is not accessible from the Config system.

Attributes

TraceFilename: Name of file to load a trace from.
- Set with class: StringValue
- Underlying type: std::string
- Initial value:
- Flags: construct write
TraceLength: The total length of the fading trace (default value 10 s.)
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +10000000000.0ns
- Flags: construct write
SamplesNum: The number of samples the trace is made of (default 10000)
- Set with class: ns3::UintegerValue
- Underlying type: uint32_t 0:4294967295
- Initial value: 10000
- Flags: construct write read
WindowSize: The size of the window for the fading trace (default value 0.5 s.)
- Set with class: TimeValue
- Underlying type: Time
- Initial value: +500000000.0ns
- Flags: construct write read
RbNum: The number of RB the trace is made of (default 100)
- Set with class: ns3::UintegerValue
- Underlying type: uint8_t 0:255
- Initial value: 100
- Flags: construct write read

No TraceSources are defined for this type.

Definition at line 44 of file trace-fading-loss-model.h.

Member Typedef Documentation

typedef std::pair<Ptr<const MobilityModel>, Ptr<const MobilityModel> > ns3::TraceFadingLossModel::ChannelRealizationId_t

The couple of mobility mnode that form a fading channel realization.

Definition at line 57 of file trace-fading-loss-model.h.

typedef std::vector<FadingTraceSample> ns3::TraceFadingLossModel::FadingTrace

private

Vector collecting the time fading traces in the frequency domain (per RB)

Definition at line 111 of file trace-fading-loss-model.h.

typedef std::vector<double> ns3::TraceFadingLossModel::FadingTraceSample

private

Vector with fading samples in time domain (for a fixed RB)

Definition at line 107 of file trace-fading-loss-model.h.

Constructor & Destructor Documentation

ns3::TraceFadingLossModel::TraceFadingLossModel ( )

Definition at line 41 of file trace-fading-loss-model.cc.

References NS_LOG_FUNCTION, and ns3::SpectrumPropagationLossModel::SetNext().

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ns3::TraceFadingLossModel::~TraceFadingLossModel ( )

virtual

Definition at line 48 of file trace-fading-loss-model.cc.

References m_fadingTrace, m_startVariableMap, and m_windowOffsetsMap.

Member Function Documentation

int64_t ns3::TraceFadingLossModel::AssignStreams ( int64_t stream )

Assign a fixed random variable stream number to the random variables used by this model. Return the number of streams (possibly zero) that have been assigned.

Parameters

stream first stream index to use

Returns: the number of stream indices assigned by this model

Definition at line 224 of file trace-fading-loss-model.cc.

References m_startVariableMap, and NS_LOG_FUNCTION.

Ptr< SpectrumValue > ns3::TraceFadingLossModel::DoCalcRxPowerSpectralDensity	(	Ptr< const SpectrumValue >	txPsd,
		Ptr< const MobilityModel >	a,
		Ptr< const MobilityModel >	b
	)		const

private

Parameters

txPower	set of values vs frequency representing the transmission power. See SpectrumChannel for details.
a	sender mobility
b	receiver mobility

Returns: set of values vs frequency representing the received power in the same units used for the txPower parameter.

Definition at line 144 of file trace-fading-loss-model.cc.

References ns3::Time::GetMilliSeconds(), ns3::Time::GetSeconds(), m_fadingTrace, m_lastWindowUpdate, m_samplesNum, m_startVariableMap, m_timeGranularity, m_traceLength, m_windowOffsetsMap, m_windowSize, ns3::Now(), ns3::Simulator::Now(), NS_ASSERT, NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, ns3::ObjectBase::SetAttribute(), ns3::SpectrumValue::ValuesBegin(), and ns3::SpectrumValue::ValuesEnd().

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void ns3::TraceFadingLossModel::DoStart ( void )

virtual

This method is called only once by Object::Start. If the user calls Object::Start multiple times, DoStart 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 106 of file trace-fading-loss-model.cc.

References LoadTrace().

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