wifimac::lowerMAC::timing::DCF Class Reference

Distributed Coordination Function. More...

#include <lowerMAC/timing/DCF.hpp>

Inheritance diagram for wifimac::lowerMAC::timing::DCF:

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Collaboration diagram for wifimac::lowerMAC::timing::DCF:

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List of all members.

Public Member Functions
wns::simulator::Time	backoffFinishedAt ()
	DCF (wns::ldk::fun::FUN *fun, const wns::pyconfig::View &config)
bool	doIsAccepting (const wns::ldk::CompoundPtr &compound) const
void	doOnData (const wns::ldk::CompoundPtr &compound)
void	doSendData (const wns::ldk::CompoundPtr &compound)
	compound Handler Interface
void	doWakeup ()
virtual void	onFUNCreated ()
void	registerEOBObserver (BackoffObserver *observer)
	notifying observers every time the backoff has finished, wether or not a transmission is waiting
virtual	~DCF ()
Private Member Functions
virtual void	backoffExpired ()
	BackoffObserver interface for the transmission of data frames.
Private Attributes
const std::string	arqCommandName
Backoff	backoff
	The backoff instance.
const bool	backoffDisabled
const std::string	csName
wns::logger::Logger	logger
const std::string	rxStartEndName
bool	sendNow
	indicates that transmission is permitted

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Detailed Description

Implements the known CSMA/CA using exponential backoff. FU does _not_ store any compounds, but uses the doIsAccepting to trigger the backoff: 1. Upper FU calls doIsAccepting -> backoff instance is asked for permission 2a. (Post-)backoff has run down: Return true, packet is send 2b. Backoff has not finished: Return false 3b. Backoff calls DCF back when finished 4b. DCF wakes upper FU up, re-start at 1

Definition at line 53 of file DCF.hpp.

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Constructor & Destructor Documentation

DCF::DCF	(	wns::ldk::fun::FUN *	fun,
		const wns::pyconfig::View &	config
	)

Definition at line 46 of file DCF.cpp.

DCF::~DCF

(

)

[virtual]

Definition at line 60 of file DCF.cpp.

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Member Function Documentation

void DCF::backoffExpired

(

)

[private, virtual]

Implements wifimac::lowerMAC::timing::BackoffObserver.

Definition at line 134 of file DCF.cpp.

wns::simulator::Time wifimac::lowerMAC::timing::DCF::backoffFinishedAt

(

)

[inline]

time the backoff will be finished at (when called during AIFS the maximum waiting time will be used) wns::simulator::Time() if backoff hasn't started, current time when finished and idle

Definition at line 80 of file DCF.hpp.

bool DCF::doIsAccepting

(

const wns::ldk::CompoundPtr &

compound

)

const

Definition at line 100 of file DCF.cpp.

void DCF::doOnData

(

const wns::ldk::CompoundPtr &

compound

)

Definition at line 93 of file DCF.cpp.

void DCF::doSendData

(

const wns::ldk::CompoundPtr &

compound

)

Definition at line 79 of file DCF.cpp.

void DCF::doWakeup

(

)

Definition at line 128 of file DCF.cpp.

void DCF::onFUNCreated

(

)

[virtual]

Definition at line 64 of file DCF.cpp.

void wifimac::lowerMAC::timing::DCF::registerEOBObserver

(

BackoffObserver *

observer

)

[inline]

Definition at line 75 of file DCF.hpp.

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Member Data Documentation

const std::string wifimac::lowerMAC::timing::DCF::arqCommandName [private]

Definition at line 89 of file DCF.hpp.

Backoff wifimac::lowerMAC::timing::DCF::backoff [mutable, private]

Definition at line 93 of file DCF.hpp.

const bool wifimac::lowerMAC::timing::DCF::backoffDisabled [private]

Definition at line 90 of file DCF.hpp.

const std::string wifimac::lowerMAC::timing::DCF::csName [private]

Definition at line 87 of file DCF.hpp.

wns::logger::Logger wifimac::lowerMAC::timing::DCF::logger [private]

Definition at line 98 of file DCF.hpp.

const std::string wifimac::lowerMAC::timing::DCF::rxStartEndName [private]

Definition at line 88 of file DCF.hpp.

bool wifimac::lowerMAC::timing::DCF::sendNow [mutable, private]

Definition at line 96 of file DCF.hpp.

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

• modules/dll/wimemac/src/lowerMAC/timing/DCF.hpp
• modules/dll/wimemac/src/lowerMAC/timing/DCF.cpp
• modules/dll/wimemac/src/lowerMAC/timing/DCF.cpp