wifimac::pathselection::LinkQuality Class Reference

Stores the (averaged) quality for one link.

#include <pathselection/LinkQualityMeasurement.hpp>

Inheritance diagram for wifimac::pathselection::LinkQuality:

Collaboration diagram for wifimac::pathselection::LinkQuality:

List of all members.

Public Member Functions

wns::simulator::Time getLastRxFrameFlightTime () const

Getter for the last FrameFlightTime which was received by the remote node.

void hasSendPiggybackedLQM ()

Allows the parent to indicate that a piggybacked LQM has been transmitted.

LinkQuality (wns::service::dll::UnicastAddress _rx, wns::simulator::Time _referenceFlightTime, wns::simulator::Time _periodicity, LinkQualityMeasurement *_parent)

Creator.

void receivedLinkQualityIndicator (const LinkQualityMeasurementCommand *lqm)

Allows the parent to indicate a fresh received link quality indicator by the remote node of this link.

Private Member Functions

void onTimeout ()

Initiates the transmission of the probe frame after the random delay.

void periodically ()

Periodically transmission of the probe-frame.

Private Attributes

wns::simulator::Time lastRxFrameFlightTime

Stores the frame flight time of the last received lqm, this indicates the quality of the link (remote node)--->this.

wns::SlidingWindow linkCostTx

Storage of the link quality this--->(remote node).

Metric oldLinkCostTxAvg

Stores the last link quality for comparison purpose.

LinkQualityMeasurement * parent

Callback-pointer to the parent.

wns::simulator::Time periodicity

Period of the transmission of the probe-packets.

const wns::simulator::Time referenceFlightTime

frame flight time which should result in Metric(1.0)

const
wns::service::dll::UnicastAddress rx

remote node of this link

bool rxLastFrame

Indicates if a lqm as a reply was received since the last transmission of my lqm. If not, this indicates the my (or the reply) lqm got lost.

wns::distribution::Uniform uniform

Random number generation for the random probe transmission delay.

Detailed Description

Definition at line 75 of file LinkQualityMeasurement.hpp.

Constructor & Destructor Documentation

LinkQuality::LinkQuality	(	wns::service::dll::UnicastAddress	_rx,
		wns::simulator::Time	_referenceFlightTime,
		wns::simulator::Time	_periodicity,
		LinkQualityMeasurement *	_parent
	)

Parameters:

	_rx	Address of the remote node of this the link
	_referenceFlightTime	frame flight time which should result in Metric(1.0)
	_periodicity	Period of the transmission of the probe-packets
	_parent	Callback pointer

Definition at line 42 of file LinkQualityMeasurement.cpp.

Member Function Documentation

wns::simulator::Time LinkQuality::getLastRxFrameFlightTime ( ) const

Note that this FrameFlightTime describes the cost (remote node)--->this, it is not used for the evaluation.

Definition at line 100 of file LinkQualityMeasurement.cpp.

void LinkQuality::hasSendPiggybackedLQM ( )

Definition at line 105 of file LinkQualityMeasurement.cpp.

void LinkQuality::onTimeout ( ) [private, virtual]

Implements wns::events::CanTimeout.

Definition at line 95 of file LinkQualityMeasurement.cpp.

void LinkQuality::periodically ( ) [private, virtual]

Note that the probe-frame is not transmitted immediatelly, but after a random delay which is limited by period/2.

Implements wns::events::PeriodicTimeout.

Definition at line 80 of file LinkQualityMeasurement.cpp.

void LinkQuality::receivedLinkQualityIndicator ( const LinkQualityMeasurementCommand * lqm )

Definition at line 60 of file LinkQualityMeasurement.cpp.

Member Data Documentation

wns::simulator::Time wifimac::pathselection::LinkQuality::lastRxFrameFlightTime [private]

Definition at line 155 of file LinkQualityMeasurement.hpp.

wns::SlidingWindow wifimac::pathselection::LinkQuality::linkCostTx [private]

Definition at line 160 of file LinkQualityMeasurement.hpp.

Metric wifimac::pathselection::LinkQuality::oldLinkCostTxAvg [private]

Definition at line 165 of file LinkQualityMeasurement.hpp.

LinkQualityMeasurement* wifimac::pathselection::LinkQuality::parent [private]

Definition at line 143 of file LinkQualityMeasurement.hpp.

wns::simulator::Time wifimac::pathselection::LinkQuality::periodicity [private]

Definition at line 138 of file LinkQualityMeasurement.hpp.

const wns::simulator::Time wifimac::pathselection::LinkQuality::referenceFlightTime [private]

Definition at line 133 of file LinkQualityMeasurement.hpp.

const wns::service::dll::UnicastAddress wifimac::pathselection::LinkQuality::rx [private]

Definition at line 128 of file LinkQualityMeasurement.hpp.

bool wifimac::pathselection::LinkQuality::rxLastFrame [private]

Definition at line 149 of file LinkQualityMeasurement.hpp.

wns::distribution::Uniform wifimac::pathselection::LinkQuality::uniform [private]

Definition at line 170 of file LinkQualityMeasurement.hpp.

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

modules/dll/wifimac/src/pathselection/LinkQualityMeasurement.hpp
modules/dll/wifimac/src/pathselection/LinkQualityMeasurement.cpp


Public Member Functions
wns::simulator::Time	getLastRxFrameFlightTime () const
	Getter for the last FrameFlightTime which was received by the remote node.
void	hasSendPiggybackedLQM ()
	Allows the parent to indicate that a piggybacked LQM has been transmitted.
	LinkQuality (wns::service::dll::UnicastAddress _rx, wns::simulator::Time _referenceFlightTime, wns::simulator::Time _periodicity, LinkQualityMeasurement *_parent)
	Creator.
void	receivedLinkQualityIndicator (const LinkQualityMeasurementCommand *lqm)
	Allows the parent to indicate a fresh received link quality indicator by the remote node of this link.
Private Member Functions
void	onTimeout ()
	Initiates the transmission of the probe frame after the random delay.
void	periodically ()
	Periodically transmission of the probe-frame.
Private Attributes
wns::simulator::Time	lastRxFrameFlightTime
	Stores the frame flight time of the last received lqm, this indicates the quality of the link (remote node)--->this.
wns::SlidingWindow	linkCostTx
	Storage of the link quality this--->(remote node).
Metric	oldLinkCostTxAvg
	Stores the last link quality for comparison purpose.
LinkQualityMeasurement *	parent
	Callback-pointer to the parent.
wns::simulator::Time	periodicity
	Period of the transmission of the probe-packets.
const wns::simulator::Time	referenceFlightTime
	frame flight time which should result in Metric(1.0)
const wns::service::dll::UnicastAddress	rx
	remote node of this link
bool	rxLastFrame
	Indicates if a lqm as a reply was received since the last transmission of my lqm. If not, this indicates the my (or the reply) lqm got lost.
wns::distribution::Uniform	uniform
	Random number generation for the random probe transmission delay.