ns3::ndn::RttMeanDeviation Class Reference

The modified version of "Mean--Deviation" RTT estimator, as discussed by Van Jacobson that better suits NDN communication model. More...

#include <ndn-rtt-mean-deviation.hpp>

Inheritance diagram for ns3::ndn::RttMeanDeviation:

Collaboration diagram for ns3::ndn::RttMeanDeviation:

Public Member Functions
	RttMeanDeviation ()
	RttMeanDeviation (const RttMeanDeviation &)
virtual TypeId	GetInstanceTypeId (void) const
void	SentSeq (SequenceNumber32 seq, uint32_t size)
	Note that a particular sequence has been sent. More...
Time	AckSeq (SequenceNumber32 ackSeq)
	Note that a particular ack sequence has been received. More...
void	Measurement (Time measure)
	Add a new measurement to the estimator. More...
Time	RetransmitTimeout ()
	Returns the estimated RTO. More...
Ptr< RttEstimator >	Copy () const
void	Reset ()
	Resets the estimation to its initial state. More...
void	Gain (double g)
Public Member Functions inherited from ns3::ndn::RttEstimator
	RttEstimator ()
	RttEstimator (const RttEstimator &)
virtual	~RttEstimator ()
virtual void	ClearSent ()
	Clear all history entries. More...
virtual void	IncreaseMultiplier ()
	Increase the estimation multiplier up to MaxMultiplier. More...
virtual void	ResetMultiplier ()
	Resets the estimation multiplier to 1. More...
void	SetMinRto (Time minRto)
	Sets the Minimum RTO. More...
Time	GetMinRto (void) const
	Get the Minimum RTO. More...
void	SetMaxRto (Time maxRto)
	Sets the Maximum RTO. More...
Time	GetMaxRto (void) const
	Get the Maximum RTO. More...
void	SetCurrentEstimate (Time estimate)
	Sets the current RTT estimate (forcefully). More...
Time	GetCurrentEstimate (void) const
	gets the current RTT estimate. More...

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

Additional Inherited Members
Protected Attributes inherited from ns3::ndn::RttEstimator
Time	m_currentEstimatedRtt
Time	m_minRto
Time	m_maxRto
uint32_t	m_nSamples
uint16_t	m_multiplier
RttHistory_t	m_history

Detailed Description

The modified version of "Mean--Deviation" RTT estimator, as discussed by Van Jacobson that better suits NDN communication model.

This class implements the "Mean--Deviation" RTT estimator, as discussed by Van Jacobson and Michael J. Karels, in "Congestion Avoidance and Control", SIGCOMM 88, Appendix A

Definition at line 47 of file ndn-rtt-mean-deviation.hpp.

Constructor & Destructor Documentation

ns3::ndn::RttMeanDeviation::RttMeanDeviation

(

)

Definition at line 61 of file ndn-rtt-mean-deviation.cpp.

ns3::ndn::RttMeanDeviation::RttMeanDeviation

(

const RttMeanDeviation &

c

)

Definition at line 67 of file ndn-rtt-mean-deviation.cpp.

Member Function Documentation

Time ns3::ndn::RttMeanDeviation::AckSeq ( SequenceNumber32  ackSeq )

virtual

Note that a particular ack sequence has been received.

Parameters

ackSeq

the ack sequence number.

Returns

The measured RTT for this ack.

Reimplemented from ns3::ndn::RttEstimator.

Definition at line 164 of file ndn-rtt-mean-deviation.cpp.

References ns3::ndn::RttEstimator::m_history, Measurement(), and ns3::ndn::RttEstimator::ResetMultiplier().

Ptr< RttEstimator > ns3::ndn::RttMeanDeviation::Copy ( void  ) const

virtual

Implements ns3::ndn::RttEstimator.

Definition at line 121 of file ndn-rtt-mean-deviation.cpp.

void ns3::ndn::RttMeanDeviation::Gain

(

double

g

)

Definition at line 137 of file ndn-rtt-mean-deviation.cpp.

TypeId ns3::ndn::RttMeanDeviation::GetInstanceTypeId ( void  ) const

virtual

Reimplemented from ns3::ndn::RttEstimator.

Definition at line 77 of file ndn-rtt-mean-deviation.cpp.

References GetTypeId().

TypeId ns3::ndn::RttMeanDeviation::GetTypeId ( void  )

static

Definition at line 46 of file ndn-rtt-mean-deviation.cpp.

Referenced by GetInstanceTypeId().

void ns3::ndn::RttMeanDeviation::Measurement ( Time  t )

virtual

Add a new measurement to the estimator.

Pure virtual function.

Parameters

t	the new RTT measure.

Implements ns3::ndn::RttEstimator.

Definition at line 83 of file ndn-rtt-mean-deviation.cpp.

References ns3::ndn::RttEstimator::m_currentEstimatedRtt, and ns3::ndn::RttEstimator::m_nSamples.

Referenced by AckSeq().

void ns3::ndn::RttMeanDeviation::Reset ( )

virtual

Resets the estimation to its initial state.

Reimplemented from ns3::ndn::RttEstimator.

Definition at line 128 of file ndn-rtt-mean-deviation.cpp.

References ns3::ndn::RttEstimator::Reset().

Time ns3::ndn::RttMeanDeviation::RetransmitTimeout ( )

virtual

Returns the estimated RTO.

Pure virtual function.

Returns

the estimated RTO.

Implements ns3::ndn::RttEstimator.

Definition at line 106 of file ndn-rtt-mean-deviation.cpp.

References ns3::ndn::RttEstimator::m_currentEstimatedRtt, ns3::ndn::RttEstimator::m_maxRto, ns3::ndn::RttEstimator::m_minRto, and ns3::ndn::RttEstimator::m_multiplier.

void ns3::ndn::RttMeanDeviation::SentSeq ( SequenceNumber32  seq, uint32_t  size  )

virtual

Note that a particular sequence has been sent.

Parameters

seq	the packet sequence number.
size	the packet size.

Reimplemented from ns3::ndn::RttEstimator.

Definition at line 146 of file ndn-rtt-mean-deviation.cpp.

References ns3::ndn::RttEstimator::m_history.

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

• ndnSIM/utils/ndn-rtt-mean-deviation.hpp
• ndnSIM/utils/ndn-rtt-mean-deviation.cpp