inet::physicallayer::Ieee80211HtDataMode Class Reference

#include <Ieee80211HtMode.h>

Inheritance diagram for inet::physicallayer::Ieee80211HtDataMode:

Public Member Functions
	Ieee80211HtDataMode (const Ieee80211Htmcs *modulationAndCodingScheme, const Hz bandwidth, GuardIntervalType guardIntervalType)
b	getServiceFieldLength () const
b	getTailFieldLength () const
virtual Hz	getBandwidth () const override
virtual int	getNumberOfSpatialStreams () const override
virtual b	getPaddingLength (b dataLength) const override
virtual b	getCompleteLength (b dataLength) const override
virtual const simtime_t	getDuration (b dataLength) const override
virtual bps	getNetBitrate () const override
virtual bps	getGrossBitrate () const override
virtual const Ieee80211Htmcs *	getModulationAndCodingScheme () const
virtual const Ieee80211HtCode *	getCode () const
virtual const Ieee80211OfdmModulation *	getModulation () const override
Public Member Functions inherited from inet::IPrintableObject
virtual	~IPrintableObject ()
virtual std::ostream &	printToStream (std::ostream &stream, int level, int evFlags=0) const
	Prints this object to the provided output stream. More...
virtual std::string	printToString () const
virtual std::string	printToString (int level, int evFlags=0) const
virtual std::string	getInfoStringRepresentation (int evFlags=0) const
virtual std::string	getDetailStringRepresentation (int evFlags=0) const
virtual std::string	getDebugStringRepresentation (int evFlags=0) const
virtual std::string	getTraceStringRepresentation (int evFlags=0) const
virtual std::string	getCompleteStringRepresentation (int evFlags=0) const
Public Member Functions inherited from inet::physicallayer::Ieee80211HtModeBase
	Ieee80211HtModeBase (unsigned int modulationAndCodingScheme, unsigned int numberOfSpatialStreams, const Hz bandwidth, GuardIntervalType guardIntervalType)
virtual int	getNumberOfDataSubcarriers () const
virtual int	getNumberOfPilotSubcarriers () const
virtual int	getNumberOfTotalSubcarriers () const
virtual GuardIntervalType	getGuardIntervalType () const
virtual unsigned int	getMcsIndex () const
Public Member Functions inherited from inet::physicallayer::Ieee80211HtTimingRelatedParametersBase
const simtime_t	getDFTPeriod () const
const simtime_t	getGIDuration () const
const simtime_t	getShortGIDuration () const
const simtime_t	getSymbolInterval () const
const simtime_t	getShortGISymbolInterval () const

Protected Member Functions
bps	computeGrossBitrate () const override
bps	computeNetBitrate () const override
unsigned int	computeNumberOfSpatialStreams (const Ieee80211OfdmModulation *stream1Modulation, const Ieee80211OfdmModulation *stream2Modulation, const Ieee80211OfdmModulation *stream3Modulation, const Ieee80211OfdmModulation *stream4Modulation) const
unsigned int	computeNumberOfCodedBitsPerSubcarrierSum () const
unsigned int	computeNumberOfBccEncoders () const

Protected Attributes
const Ieee80211Htmcs *	modulationAndCodingScheme
const unsigned int	numberOfBccEncoders
Protected Attributes inherited from inet::physicallayer::Ieee80211HtModeBase
const Hz	bandwidth
const GuardIntervalType	guardIntervalType
const unsigned int	mcsIndex
const unsigned int	numberOfSpatialStreams
bps	netBitrate
bps	grossBitrate

Additional Inherited Members
Public Types inherited from inet::IPrintableObject
enum	PrintLevel {   PRINT_LEVEL_TRACE, PRINT_LEVEL_DEBUG, PRINT_LEVEL_DETAIL, PRINT_LEVEL_INFO,   PRINT_LEVEL_COMPLETE = INT_MIN }
enum	PrintFlag { PRINT_FLAG_FORMATTED = (1 << 0), PRINT_FLAG_MULTILINE = (1 << 1) }
Public Types inherited from inet::physicallayer::Ieee80211HtModeBase
enum	GuardIntervalType { HT_GUARD_INTERVAL_SHORT, HT_GUARD_INTERVAL_LONG }

Constructor & Destructor Documentation

Ieee80211HtDataMode()

inet::physicallayer::Ieee80211HtDataMode::Ieee80211HtDataMode	(	const Ieee80211Htmcs *	modulationAndCodingScheme,
		const Hz	bandwidth,
		GuardIntervalType	guardIntervalType
	)

                                                                                                                                                 :
    Ieee80211HtModeBase(modulationAndCodingScheme->getMcsIndex(), computeNumberOfSpatialStreams(modulationAndCodingScheme->getModulation(), modulationAndCodingScheme->getStreamExtension1Modulation(), modulationAndCodingScheme->getStreamExtension2Modulation(), modulationAndCodingScheme->getStreamExtension3Modulation()), bandwidth, guardIntervalType),
    modulationAndCodingScheme(modulationAndCodingScheme),
    numberOfBccEncoders(computeNumberOfBccEncoders())
{
}

Member Function Documentation

computeGrossBitrate()

bps inet::physicallayer::Ieee80211HtDataMode::computeGrossBitrate ( ) const

overrideprotectedvirtual

Implements inet::physicallayer::Ieee80211HtModeBase.

{
    unsigned int numberOfCodedBitsPerSubcarrierSum = computeNumberOfCodedBitsPerSubcarrierSum();
    unsigned int numberOfCodedBitsPerSymbol = numberOfCodedBitsPerSubcarrierSum * getNumberOfDataSubcarriers();
    if (guardIntervalType == HT_GUARD_INTERVAL_LONG)
        return bps(numberOfCodedBitsPerSymbol / getSymbolInterval());
    else if (guardIntervalType == HT_GUARD_INTERVAL_SHORT)
        return bps(numberOfCodedBitsPerSymbol / getShortGISymbolInterval());
    else
        throw cRuntimeError("Unknown guard interval type");
}

computeNetBitrate()

bps inet::physicallayer::Ieee80211HtDataMode::computeNetBitrate ( ) const

overrideprotectedvirtual

Implements inet::physicallayer::Ieee80211HtModeBase.

{
    return getGrossBitrate() * getCode()->getForwardErrorCorrection()->getCodeRate();
}

computeNumberOfBccEncoders()

unsigned int inet::physicallayer::Ieee80211HtDataMode::computeNumberOfBccEncoders ( ) const

protected

{
    // When the BCC FEC encoder is used, a single encoder is used, except that two encoders
    // are used when the selected MCS has a PHY rate greater than 300 Mb/s (see 20.6).
    return getGrossBitrate() > Mbps(300) ? 2 : 1;
}

computeNumberOfCodedBitsPerSubcarrierSum()

unsigned int inet::physicallayer::Ieee80211HtDataMode::computeNumberOfCodedBitsPerSubcarrierSum ( ) const

protected

{
    return (modulationAndCodingScheme->getModulation() ? modulationAndCodingScheme->getModulation()->getSubcarrierModulation()->getCodeWordSize() : 0) +
           (modulationAndCodingScheme->getStreamExtension1Modulation() ? modulationAndCodingScheme->getStreamExtension1Modulation()->getSubcarrierModulation()->getCodeWordSize() : 0) +
           (modulationAndCodingScheme->getStreamExtension2Modulation() ? modulationAndCodingScheme->getStreamExtension2Modulation()->getSubcarrierModulation()->getCodeWordSize() : 0) +
           (modulationAndCodingScheme->getStreamExtension3Modulation() ? modulationAndCodingScheme->getStreamExtension3Modulation()->getSubcarrierModulation()->getCodeWordSize() : 0);
}

Referenced by computeGrossBitrate(), and getDuration().

computeNumberOfSpatialStreams()

unsigned int inet::physicallayer::Ieee80211HtDataMode::computeNumberOfSpatialStreams ( const Ieee80211OfdmModulation *  stream1Modulation, const Ieee80211OfdmModulation *  stream2Modulation, const Ieee80211OfdmModulation *  stream3Modulation, const Ieee80211OfdmModulation *  stream4Modulation  ) const

protected

{
    return (stream1Modulation ? 1 : 0) + (stream2Modulation ? 1 : 0) +
           (stream3Modulation ? 1 : 0) + (stream4Modulation ? 1 : 0);
}

getBandwidth()

virtual Hz inet::physicallayer::Ieee80211HtDataMode::getBandwidth ( ) const

inlineoverridevirtual

Reimplemented from inet::physicallayer::Ieee80211HtModeBase.

{ return bandwidth; }

getCode()

virtual const Ieee80211HtCode* inet::physicallayer::Ieee80211HtDataMode::getCode ( ) const

inlinevirtual

{ return modulationAndCodingScheme->getCode(); }

Referenced by computeNetBitrate(), and getDuration().

getCompleteLength()

b inet::physicallayer::Ieee80211HtDataMode::getCompleteLength ( b  dataLength ) const

overridevirtual

Implements inet::physicallayer::IIeee80211DataMode.

{
    return getServiceFieldLength() + getTailFieldLength() + dataLength; // TODO padding?
}

Referenced by getDuration().

getDuration()

const simtime_t inet::physicallayer::Ieee80211HtDataMode::getDuration ( b  dataLength ) const

overridevirtual

Implements inet::physicallayer::IIeee80211DataMode.

{
    unsigned int numberOfCodedBitsPerSubcarrierSum = computeNumberOfCodedBitsPerSubcarrierSum();
    unsigned int numberOfCodedBitsPerSymbol = numberOfCodedBitsPerSubcarrierSum * getNumberOfDataSubcarriers();
    const IForwardErrorCorrection *forwardErrorCorrection = getCode() ? getCode()->getForwardErrorCorrection() : nullptr;
    unsigned int dataBitsPerSymbol = forwardErrorCorrection ? forwardErrorCorrection->getDecodedLength(numberOfCodedBitsPerSymbol) : numberOfCodedBitsPerSymbol;
    int numberOfSymbols = lrint(ceil((double)getCompleteLength(dataLength).get() / dataBitsPerSymbol)); // TODO getBitLength(dataLength) should be divisible by dataBitsPerSymbol
    return numberOfSymbols * getSymbolInterval();
}

Referenced by inet::physicallayer::Ieee80211HtMode::getDuration().

getGrossBitrate()

virtual bps inet::physicallayer::Ieee80211HtDataMode::getGrossBitrate ( ) const

inlineoverridevirtual

Reimplemented from inet::physicallayer::Ieee80211HtModeBase.

{ return Ieee80211HtModeBase::getGrossBitrate(); }

Referenced by computeNetBitrate(), and computeNumberOfBccEncoders().

getModulation()

virtual const Ieee80211OfdmModulation* inet::physicallayer::Ieee80211HtDataMode::getModulation ( ) const

inlineoverridevirtual

Implements inet::physicallayer::IIeee80211DataMode.

{ return modulationAndCodingScheme->getModulation(); }

getModulationAndCodingScheme()

virtual const Ieee80211Htmcs* inet::physicallayer::Ieee80211HtDataMode::getModulationAndCodingScheme ( ) const

inlinevirtual

{ return modulationAndCodingScheme; }

getNetBitrate()

virtual bps inet::physicallayer::Ieee80211HtDataMode::getNetBitrate ( ) const

inlineoverridevirtual

Reimplemented from inet::physicallayer::Ieee80211HtModeBase.

{ return Ieee80211HtModeBase::getNetBitrate(); }

getNumberOfSpatialStreams()

virtual int inet::physicallayer::Ieee80211HtDataMode::getNumberOfSpatialStreams ( ) const

inlineoverridevirtual

Reimplemented from inet::physicallayer::Ieee80211HtModeBase.

{ return Ieee80211HtModeBase::getNumberOfSpatialStreams(); }

Referenced by inet::physicallayer::Ieee80211HtCompliantModes::getCompliantMode().

getPaddingLength()

virtual b inet::physicallayer::Ieee80211HtDataMode::getPaddingLength ( b  dataLength ) const

inlineoverridevirtual

Implements inet::physicallayer::IIeee80211DataMode.

{ return b(0); }

getServiceFieldLength()

b inet::physicallayer::Ieee80211HtDataMode::getServiceFieldLength ( ) const

inline

{ return b(16); }

Referenced by getCompleteLength().

getTailFieldLength()

b inet::physicallayer::Ieee80211HtDataMode::getTailFieldLength ( ) const

inline

{ return b(6) * numberOfBccEncoders; }

Referenced by getCompleteLength().

Member Data Documentation

modulationAndCodingScheme

const Ieee80211Htmcs* inet::physicallayer::Ieee80211HtDataMode::modulationAndCodingScheme

protected

Referenced by computeNumberOfCodedBitsPerSubcarrierSum().

numberOfBccEncoders

const unsigned int inet::physicallayer::Ieee80211HtDataMode::numberOfBccEncoders

protected

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

• Ieee80211HtMode.h
• Ieee80211HtMode.cc