inet::ieee80211::OnoeRateControl Class Reference

Implements the Onoe rate control algorithms. More...

#include <OnoeRateControl.h>

Inheritance diagram for inet::ieee80211::OnoeRateControl:

Public Member Functions
virtual const IIeee80211Mode *	getRate () override
virtual void	frameTransmitted (const Ieee80211Frame *frame, int retryCount, bool isSuccessful, bool isGivenUp) override
virtual void	frameReceived (const Ieee80211Frame *frame, const Ieee80211ReceptionIndication *receptionIndication) override
Public Member Functions inherited from inet::ieee80211::IRateControl
virtual	~IRateControl ()

Protected Member Functions
virtual int	numInitStages () const override
virtual void	initialize (int stage) override
virtual void	handleMessage (cMessage *msg) override
virtual void	computeMode ()
virtual void	resetStatisticalVariables ()
virtual void	computeModeIfTimerIsExpired ()
virtual void	updateDisplayString ()
Protected Member Functions inherited from inet::ieee80211::RateControlBase
virtual void	receiveSignal (cComponent *source, simsignal_t signalID, cObject *obj, cObject *details) override
virtual void	emitDatarateSignal ()
const IIeee80211Mode *	increaseRateIfPossible (const IIeee80211Mode *currentMode)
const IIeee80211Mode *	decreaseRateIfPossible (const IIeee80211Mode *currentMode)

Protected Attributes
simtime_t	timer = SIMTIME_ZERO
simtime_t	interval = SIMTIME_ZERO
int	numOfRetries = 0
int	numOfSuccTransmissions = 0
int	numOfGivenUpTransmissions = 0
double	avgRetriesPerFrame = 0
int	credit = 0
Protected Attributes inherited from inet::ieee80211::RateControlBase
const IIeee80211Mode *	currentMode = nullptr
Protected Attributes inherited from inet::ieee80211::ModeSetListener
Ieee80211ModeSet *	modeSet = nullptr

Additional Inherited Members
Static Public Attributes inherited from inet::ieee80211::RateControlBase
static simsignal_t	datarateSignal = cComponent::registerSignal("datarate")

Detailed Description

Implements the Onoe rate control algorithms.

Member Function Documentation

void inet::ieee80211::OnoeRateControl::computeMode ( )

protectedvirtual

Referenced by computeModeIfTimerIsExpired().

{
    int numOfFrameTransmitted = numOfSuccTransmissions + numOfGivenUpTransmissions + numOfRetries;
    avgRetriesPerFrame = double(numOfRetries) / (numOfSuccTransmissions + numOfGivenUpTransmissions);

    if (numOfSuccTransmissions > 0)
    {
        if (numOfFrameTransmitted >= 10 && avgRetriesPerFrame > 1)
        {
            currentMode = decreaseRateIfPossible(currentMode);
            emitDatarateSignal();
            updateDisplayString();
            EV_DETAIL << "Decreased rate to " << *currentMode << endl;
            credit = 0;
        }
        else if (avgRetriesPerFrame >= 0.1)
            credit--;
        else
            credit++;

        if (credit >= 10)
        {
            currentMode = increaseRateIfPossible(currentMode);
            emitDatarateSignal();
            updateDisplayString();
            EV_DETAIL << "Increased rate to " << *currentMode << endl;
            credit = 0;
        }

        resetStatisticalVariables();
    }
}

void inet::ieee80211::OnoeRateControl::computeModeIfTimerIsExpired ( )

protectedvirtual

Referenced by frameTransmitted(), and getRate().

{
    if (simTime() - timer >= interval)
    {
        computeMode();
        timer = simTime();
    }
}

void inet::ieee80211::OnoeRateControl::frameReceived ( const Ieee80211Frame *  frame, const Ieee80211ReceptionIndication *  receptionIndication  )

overridevirtual

Implements inet::ieee80211::IRateControl.

{
}

void inet::ieee80211::OnoeRateControl::frameTransmitted ( const Ieee80211Frame *  frame, int  retryCount, bool  isSuccessful, bool  isGivenUp  )

overridevirtual

Implements inet::ieee80211::IRateControl.

{
    computeModeIfTimerIsExpired();
    if (isSuccessful)
        numOfSuccTransmissions++;
    else if (isGivenUp)
        numOfGivenUpTransmissions++;
    if (retryCount > 0)
        numOfRetries++;
}

const IIeee80211Mode * inet::ieee80211::OnoeRateControl::getRate ( )

overridevirtual

Implements inet::ieee80211::IRateControl.

{
    Enter_Method_Silent("getRate()");
    computeModeIfTimerIsExpired();
    EV_INFO << "The current mode is " << currentMode << " the net bitrate is " << currentMode->getDataMode()->getNetBitrate() << std::endl;
    return currentMode;
}

void inet::ieee80211::OnoeRateControl::handleMessage ( cMessage *  msg )

overrideprotectedvirtual

{
    throw cRuntimeError("This module doesn't handle self messages");
}

void inet::ieee80211::OnoeRateControl::initialize ( int  stage )

overrideprotectedvirtual

Reimplemented from inet::ieee80211::RateControlBase.

{
    RateControlBase::initialize(stage);
    if (stage == INITSTAGE_LOCAL) {
        interval = par("interval");
        WATCH(numOfRetries);
        WATCH(credit);
        WATCH(numOfSuccTransmissions);
        WATCH(numOfGivenUpTransmissions);
        WATCH(avgRetriesPerFrame);
        updateDisplayString();
    }
}

virtual int inet::ieee80211::OnoeRateControl::numInitStages ( ) const

inlineoverrideprotectedvirtual

Reimplemented from inet::ieee80211::RateControlBase.

{ return NUM_INIT_STAGES; }

void inet::ieee80211::OnoeRateControl::resetStatisticalVariables ( )

protectedvirtual

Referenced by computeMode().

{
    numOfRetries = 0;
    numOfSuccTransmissions = 0;
    numOfGivenUpTransmissions = 0;
}

void inet::ieee80211::OnoeRateControl::updateDisplayString ( )

protectedvirtual

Referenced by computeMode(), and initialize().

{
    getDisplayString().setTagArg("t", 0, currentMode->getName());
}

Member Data Documentation

double inet::ieee80211::OnoeRateControl::avgRetriesPerFrame = 0

protected

Referenced by computeMode(), and initialize().

int inet::ieee80211::OnoeRateControl::credit = 0

protected

Referenced by computeMode(), and initialize().

simtime_t inet::ieee80211::OnoeRateControl::interval = SIMTIME_ZERO

protected

Referenced by computeModeIfTimerIsExpired(), and initialize().

int inet::ieee80211::OnoeRateControl::numOfGivenUpTransmissions = 0

protected

Referenced by computeMode(), frameTransmitted(), initialize(), and resetStatisticalVariables().

int inet::ieee80211::OnoeRateControl::numOfRetries = 0

protected

Referenced by computeMode(), frameTransmitted(), initialize(), and resetStatisticalVariables().

int inet::ieee80211::OnoeRateControl::numOfSuccTransmissions = 0

protected

Referenced by computeMode(), frameTransmitted(), initialize(), and resetStatisticalVariables().

simtime_t inet::ieee80211::OnoeRateControl::timer = SIMTIME_ZERO

protected

Referenced by computeModeIfTimerIsExpired().

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

• OnoeRateControl.h
• OnoeRateControl.cc