inet::ieee80211::OriginatorProtectionMechanism Class Reference

#include <OriginatorProtectionMechanism.h>

Inheritance diagram for inet::ieee80211::OriginatorProtectionMechanism:

Public Member Functions
virtual	~OriginatorProtectionMechanism ()
virtual simtime_t	computeDurationField (Ieee80211Frame *frame, Ieee80211DataOrMgmtFrame *pendingFrame)

Protected Member Functions
virtual int	numInitStages () const override
virtual void	initialize (int stage) override
virtual simtime_t	computeRtsDurationField (Ieee80211RTSFrame *rtsFrame, Ieee80211DataOrMgmtFrame *pendingFrame)
virtual simtime_t	computeDataFrameDurationField (Ieee80211DataFrame *dataFrame, Ieee80211DataOrMgmtFrame *pendingFrame)
virtual simtime_t	computeMgmtFrameDurationField (Ieee80211ManagementFrame *mgmtFrame, Ieee80211DataOrMgmtFrame *pendingFrame)
Protected Member Functions inherited from inet::ieee80211::ModeSetListener
virtual void	receiveSignal (cComponent *source, simsignal_t signalID, cObject *obj, cObject *details) override

Protected Attributes
IRateSelection *	rateSelection = nullptr
Protected Attributes inherited from inet::ieee80211::ModeSetListener
Ieee80211ModeSet *	modeSet = nullptr

Constructor & Destructor Documentation

virtual inet::ieee80211::OriginatorProtectionMechanism::~OriginatorProtectionMechanism ( )

inlinevirtual

{ }

Member Function Documentation

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeDataFrameDurationField ( Ieee80211DataFrame *  dataFrame, Ieee80211DataOrMgmtFrame *  pendingFrame  )

protectedvirtual

Referenced by computeDurationField().

{
    simtime_t ackToDataFrameDuration = rateSelection->computeResponseAckFrameMode(dataFrame)->getDuration(LENGTH_ACK);
    if (dataFrame->getReceiverAddress().isMulticast())
        return 0;
    if (!dataFrame->getMoreFragments())
        return ackToDataFrameDuration + modeSet->getSifsTime();
    else {
        simtime_t pendingFrameDuration = rateSelection->computeMode(pendingFrame)->getDuration(pendingFrame->getBitLength());
        auto pendingFrameMode = rateSelection->computeMode(pendingFrame);
        RateSelection::setFrameMode(pendingFrame, pendingFrameMode);
        simtime_t ackToPendingFrame = pendingFrameMode->getDuration(LENGTH_ACK);
        return pendingFrameDuration + ackToDataFrameDuration + ackToPendingFrame + 3 * modeSet->getSifsTime();
    }
}

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeDurationField ( Ieee80211Frame *  frame, Ieee80211DataOrMgmtFrame *  pendingFrame  )

virtual

Referenced by inet::ieee80211::Dcf::transmitFrame().

{
    if (auto rtsFrame = dynamic_cast<Ieee80211RTSFrame *>(frame))
        return computeRtsDurationField(rtsFrame, pendingFrame);
    else if (auto dataFrame = dynamic_cast<Ieee80211DataFrame*>(frame))
        return computeDataFrameDurationField(dataFrame, pendingFrame);
    else if (auto mgmtFrame = dynamic_cast<Ieee80211ManagementFrame*>(frame))
        return computeMgmtFrameDurationField(mgmtFrame, pendingFrame);
    else
        throw cRuntimeError("Unknown frame");
}

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeMgmtFrameDurationField ( Ieee80211ManagementFrame *  mgmtFrame, Ieee80211DataOrMgmtFrame *  pendingFrame  )

protectedvirtual

Referenced by computeDurationField().

{
    simtime_t ackFrameDuration = rateSelection->computeResponseAckFrameMode(mgmtFrame)->getDuration(LENGTH_ACK);
    if (mgmtFrame->getReceiverAddress().isMulticast())
        return 0;
    if (!mgmtFrame->getMoreFragments()) {
        return ackFrameDuration + modeSet->getSifsTime();
    }
    else {
        simtime_t pendingFrameDuration = rateSelection->computeMode(pendingFrame)->getDuration(pendingFrame->getBitLength());
        return pendingFrameDuration + 2 * ackFrameDuration + 3 * modeSet->getSifsTime();
    }
}

simtime_t inet::ieee80211::OriginatorProtectionMechanism::computeRtsDurationField ( Ieee80211RTSFrame *  rtsFrame, Ieee80211DataOrMgmtFrame *  pendingFrame  )

protectedvirtual

Referenced by computeDurationField().

{
    auto pendingFrameMode = rateSelection->computeMode(pendingFrame);
    RateSelection::setFrameMode(pendingFrame, pendingFrameMode); // FIXME: Kludge
    simtime_t pendingFrameDuration = pendingFrameMode->getDuration(pendingFrame->getBitLength());
    simtime_t ctsFrameDuration = rateSelection->computeResponseCtsFrameMode(rtsFrame)->getDuration(LENGTH_CTS);
    simtime_t ackFrameDuration = rateSelection->computeResponseAckFrameMode(pendingFrame)->getDuration(LENGTH_ACK);
    simtime_t durationId = ctsFrameDuration + pendingFrameDuration + ackFrameDuration;
    return durationId + 3 * modeSet->getSifsTime();
}

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

overrideprotectedvirtual

Reimplemented from inet::ieee80211::ModeSetListener.

{
    ModeSetListener::initialize(stage);
    if (stage == INITSTAGE_LOCAL) {
        rateSelection = check_and_cast<IRateSelection*>(getModuleByPath(par("rateSelectionModule")));
    }
}

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

inlineoverrideprotectedvirtual

Reimplemented from inet::ieee80211::ModeSetListener.

{ return NUM_INIT_STAGES; }

Member Data Documentation

IRateSelection* inet::ieee80211::OriginatorProtectionMechanism::rateSelection = nullptr

protected

Referenced by computeDataFrameDurationField(), computeMgmtFrameDurationField(), computeRtsDurationField(), and initialize().

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

• OriginatorProtectionMechanism.h
• OriginatorProtectionMechanism.cc