he-capabilities.cc

Go to the documentation of this file.

/*
 * Copyright (c) 2016
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 * Author: Sébastien Deronne <sebastien.deronne@gmail.com>
 */
 
#include "he-capabilities.h"
 
#include <algorithm>
 
namespace ns3
{
 
HeCapabilities::HeCapabilities()
    : m_plusHtcHeSupport(0),
      m_twtRequesterSupport(0),
      m_twtResponderSupport(0),
      m_fragmentationSupport(0),
      m_maximumNumberOfFragmentedMsdus(0),
      m_minimumFragmentSize(0),
      m_triggerFrameMacPaddingDuration(0),
      m_multiTidAggregationRxSupport(0),
      m_heLinkAdaptation(0),
      m_allAckSupport(0),
      m_trsSupport(0),
      m_bsrSupport(0),
      m_broadcastTwtSupport(0),
      m_32bitBaBitmapSupport(0),
      m_muCascadeSupport(0),
      m_ackEnabledAggregationSupport(0),
      m_omControlSupport(0),
      m_ofdmaRaSupport(0),
      m_maxAmpduLengthExponent(0),
      m_amsduFragmentationSupport(0),
      m_flexibleTwtScheduleSupport(0),
      m_rxControlFrameToMultiBss(0),
      m_bsrpBqrpAmpduAggregation(0),
      m_qtpSupport(0),
      m_bqrSupport(0),
      m_psrResponder(0),
      m_ndpFeedbackReportSupport(0),
      m_opsSupport(0),
      m_amsduNotUnderBaInAmpduSupport(0),
      m_multiTidAggregationTxSupport(0),
      m_heSubchannelSelectiveTxSupport(0),
      m_ul2x996ToneRuSupport(0),
      m_omControlUlMuDataDisableRxSupport(0),
      m_heDynamicSmPowerSave(0),
      m_puncturedSoundingSupport(0),
      m_heVhtTriggerFrameRxSupport(0),
      m_channelWidthSet(0),
      m_puncturedPreambleRx(0),
      m_deviceClass(0),
      m_ldpcCodingInPayload(0),
      m_heSuPpdu1xHeLtf800nsGi(0),
      m_midambleRxMaxNsts(0),
      m_ndp4xHeLtfAnd32msGi(0),
      m_stbcTxLeq80MHz(0),
      m_stbcRxLeq80MHz(0),
      m_dopplerTx(0),
      m_dopplerRx(0),
      m_fullBwUlMuMimo(0),
      m_partialBwUlMuMimo(0),
      m_dcmMaxConstellationTx(0),
      m_dcmMaxNssTx(0),
      m_dcmMaxConstellationRx(0),
      m_dcmMaxNssRx(0),
      m_rxPartialBwSuInHeMu(0),
      m_suBeamformer(0),
      m_suBeamformee(0),
      m_muBeamformer(0),
      m_beamformeeStsForSmallerOrEqualThan80Mhz(0),
      m_beamformeeStsForLargerThan80Mhz(0),
      m_numberOfSoundingDimensionsForSmallerOrEqualThan80Mhz(0),
      m_numberOfSoundingDimensionsForLargerThan80Mhz(0),
      m_ngEqual16ForSuFeedbackSupport(0),
      m_ngEqual16ForMuFeedbackSupport(0),
      m_codebookSize42SuFeedback(0),
      m_codebookSize75MuFeedback(0),
      m_triggeredSuBfFeedback(0),
      m_triggeredMuBfFeedback(0),
      m_triggeredCqiFeedback(0),
      m_erPartialBandwidth(0),
      m_dlMuMimoOnPartialBandwidth(0),
      m_ppeThresholdPresent(0),
      m_psrBasedSrSupport(0),
      m_powerBoostFactorAlphaSupport(0),
      m_hePpdu4xHeLtf800nsGi(0),
      m_maxNc(0),
      m_stbcTxGt80MHz(0),
      m_stbcRxGt80MHz(0),
      m_heErSuPpdu4xHeLtf08sGi(0),
      m_hePpdu20MHzIn40MHz24GHz(0),
      m_hePpdu20MHzIn160MHz(0),
      m_hePpdu80MHzIn160MHz(0),
      m_heErSuPpdu1xHeLtf08Gi(0),
      m_midamble2xAnd1xHeLtf(0),
      m_dcmMaxRu(0),
      m_longerThan16HeSigbOfdm(0),
      m_nonTriggeredCqiFeedback(0),
      m_tx1024QamLt242Ru(0),
      m_rx1024QamLt242Ru(0),
      m_rxFullBwSuInHeMuCompressedSigB(0),
      m_rxFullBwSuInHeMuNonCompressedSigB(0),
      m_nominalPacketPadding(0),
      m_maxHeLtfRxInHeMuMoreThanOneRu(0),
      m_highestNssSupportedM1(0),
      m_highestMcsSupported(0)
{
    m_txBwMap.resize(8, 0);
    m_rxBwMap.resize(8, 0);
}
 
WifiInformationElementId
HeCapabilities::ElementId() const
{
    return IE_EXTENSION;
}
 
WifiInformationElementId
HeCapabilities::ElementIdExt() const
{
    return IE_EXT_HE_CAPABILITIES;
}
 
void
HeCapabilities::Print(std::ostream& os) const
{
    os << "HE Capabilities=" << GetHeMacCapabilitiesInfo1() << "|" << +GetHeMacCapabilitiesInfo2()
       << "|" << GetHePhyCapabilitiesInfo1() << "|" << GetHePhyCapabilitiesInfo2() << "|"
       << +GetHePhyCapabilitiesInfo3() << "|" << GetSupportedMcsAndNss();
}
 
uint16_t
HeCapabilities::GetInformationFieldSize() const
{
    // IEEE 802.11ax-2021 9.4.2.248 HE Capabilities element
    // Element ID Extension (1) + HE MAC Capabilities Information (6)
    // + HE PHY Capabilities Information (11) + Supported HE-MCS And NSS Set (4)
    // TODO: Supported HE-MCS And NSS Set field has variable length (4, 8 or 12)
    // TODO: PPE Thresholds field (optional) is not implemented
    return 22;
}
 
void
HeCapabilities::SerializeInformationField(Buffer::Iterator start) const
{
    // write the corresponding value for each bit
    start.WriteHtolsbU32(GetHeMacCapabilitiesInfo1());
    start.WriteHtolsbU16(GetHeMacCapabilitiesInfo2());
    start.WriteHtolsbU64(GetHePhyCapabilitiesInfo1());
    start.WriteHtolsbU16(GetHePhyCapabilitiesInfo2());
    start.WriteU8(GetHePhyCapabilitiesInfo3());
    start.WriteHtolsbU32(GetSupportedMcsAndNss());
    // TODO: add another 32-bits field if 160 MHz channel is supported (variable length)
    // TODO: optional PPE Threshold field (variable length)
}
 
uint16_t
HeCapabilities::DeserializeInformationField(Buffer::Iterator start, uint16_t length)
{
    Buffer::Iterator i = start;
    uint32_t macCapabilities1 = i.ReadLsbtohU32();
    uint16_t macCapabilities2 = i.ReadLsbtohU16();
    uint64_t phyCapabilities1 = i.ReadLsbtohU64();
    uint64_t phyCapabilities2 = i.ReadLsbtohU16();
    uint8_t phyCapabilities3 = i.ReadU8();
    uint32_t mcsset = i.ReadU32();
    SetHeMacCapabilitiesInfo(macCapabilities1, macCapabilities2);
    SetHePhyCapabilitiesInfo(phyCapabilities1, phyCapabilities2, phyCapabilities3);
    SetSupportedMcsAndNss(mcsset);
    // TODO: add another 32-bits field if 160 MHz channel is supported (variable length)
    // TODO: optional PPE Threshold field (variable length)
    return length;
}
 
void
HeCapabilities::SetHeMacCapabilitiesInfo(uint32_t ctrl1, uint16_t ctrl2)
{
    m_plusHtcHeSupport = ctrl1 & 0x01;
    m_twtRequesterSupport = (ctrl1 >> 1) & 0x01;
    m_twtResponderSupport = (ctrl1 >> 2) & 0x01;
    m_fragmentationSupport = (ctrl1 >> 3) & 0x03;
    m_maximumNumberOfFragmentedMsdus = (ctrl1 >> 5) & 0x07;
    m_minimumFragmentSize = (ctrl1 >> 8) & 0x03;
    m_triggerFrameMacPaddingDuration = (ctrl1 >> 10) & 0x03;
    m_multiTidAggregationRxSupport = (ctrl1 >> 12) & 0x07;
    m_heLinkAdaptation = (ctrl1 >> 15) & 0x03;
    m_allAckSupport = (ctrl1 >> 17) & 0x01;
    m_trsSupport = (ctrl1 >> 18) & 0x01;
    m_bsrSupport = (ctrl1 >> 19) & 0x01;
    m_broadcastTwtSupport = (ctrl1 >> 20) & 0x01;
    m_32bitBaBitmapSupport = (ctrl1 >> 21) & 0x01;
    m_muCascadeSupport = (ctrl1 >> 22) & 0x01;
    m_ackEnabledAggregationSupport = (ctrl1 >> 23) & 0x01;
    // IEEE 802.11ax-2021 9.4.2.248.2 HE MAC Capabilities
    // Bit 24 is reserved
    m_omControlSupport = (ctrl1 >> 25) & 0x01;
    m_ofdmaRaSupport = (ctrl1 >> 26) & 0x01;
    m_maxAmpduLengthExponent = (ctrl1 >> 27) & 0x03;
    m_amsduFragmentationSupport = (ctrl1 >> 29) & 0x01;
    m_flexibleTwtScheduleSupport = (ctrl1 >> 30) & 0x01;
    m_rxControlFrameToMultiBss = (ctrl1 >> 31) & 0x01;
    m_bsrpBqrpAmpduAggregation = ctrl2 & 0x01;
    m_qtpSupport = (ctrl2 >> 1) & 0x01;
    m_bqrSupport = (ctrl2 >> 2) & 0x01;
    m_psrResponder = (ctrl2 >> 3) & 0x01;
    m_ndpFeedbackReportSupport = (ctrl2 >> 4) & 0x01;
    m_opsSupport = (ctrl2 >> 5) & 0x01;
    m_amsduNotUnderBaInAmpduSupport = (ctrl2 >> 6) & 0x01;
    m_multiTidAggregationTxSupport = (ctrl2 >> 7) & 0x07;
    m_heSubchannelSelectiveTxSupport = (ctrl2 >> 10) & 0x01;
    m_ul2x996ToneRuSupport = (ctrl2 >> 11) & 0x01;
    m_omControlUlMuDataDisableRxSupport = (ctrl2 >> 12) & 0x01;
    m_heDynamicSmPowerSave = (ctrl2 >> 13) & 0x01;
    m_puncturedSoundingSupport = (ctrl2 >> 14) & 0x01;
    m_heVhtTriggerFrameRxSupport = (ctrl2 >> 15) & 0x01;
}
 
uint32_t
HeCapabilities::GetHeMacCapabilitiesInfo1() const
{
    uint32_t val = 0;
    val |= m_plusHtcHeSupport & 0x01;
    val |= (m_twtRequesterSupport & 0x01) << 1;
    val |= (m_twtResponderSupport & 0x01) << 2;
    val |= (m_fragmentationSupport & 0x03) << 3;
    val |= (m_maximumNumberOfFragmentedMsdus & 0x07) << 5;
    val |= (m_minimumFragmentSize & 0x03) << 8;
    val |= (m_triggerFrameMacPaddingDuration & 0x03) << 10;
    val |= (m_multiTidAggregationRxSupport & 0x07) << 12;
    val |= (m_heLinkAdaptation & 0x03) << 15;
    val |= (m_allAckSupport & 0x01) << 17;
    val |= (m_trsSupport & 0x01) << 18;
    val |= (m_bsrSupport & 0x01) << 19;
    val |= (m_broadcastTwtSupport & 0x01) << 20;
    val |= (m_32bitBaBitmapSupport & 0x01) << 21;
    val |= (m_muCascadeSupport & 0x01) << 22;
    val |= (m_ackEnabledAggregationSupport & 0x01) << 23;
    // IEEE 802.11ax-2021 9.4.2.248.2 HE MAC Capabilities
    // Bit 24 is reserved
    val |= (m_omControlSupport & 0x01) << 25;
    val |= (m_ofdmaRaSupport & 0x01) << 26;
    val |= (m_maxAmpduLengthExponent & 0x03) << 27;
    val |= (m_amsduFragmentationSupport & 0x01) << 29;
    val |= (m_flexibleTwtScheduleSupport & 0x01) << 30;
    val |= (m_rxControlFrameToMultiBss & 0x01) << 31;
    return val;
}
 
uint16_t
HeCapabilities::GetHeMacCapabilitiesInfo2() const
{
    uint16_t val = 0;
    val |= m_bsrpBqrpAmpduAggregation & 0x01;
    val |= (m_qtpSupport & 0x01) << 1;
    val |= (m_bqrSupport & 0x01) << 2;
    val |= (m_psrResponder & 0x01) << 3;
    val |= (m_ndpFeedbackReportSupport & 0x01) << 4;
    val |= (m_opsSupport & 0x01) << 5;
    val |= (m_amsduNotUnderBaInAmpduSupport & 0x01) << 6;
    val |= (m_multiTidAggregationTxSupport & 0x07) << 7;
    val |= (m_heSubchannelSelectiveTxSupport & 0x01) << 10;
    val |= (m_ul2x996ToneRuSupport & 0x01) << 11;
    val |= (m_omControlUlMuDataDisableRxSupport & 0x01) << 12;
    val |= (m_heDynamicSmPowerSave & 0x01) << 13;
    val |= (m_puncturedSoundingSupport & 0x01) << 14;
    val |= (m_heVhtTriggerFrameRxSupport & 0x01) << 15;
    return val;
}
 
void
HeCapabilities::SetHePhyCapabilitiesInfo(uint64_t ctrl1, uint16_t ctrl2, uint8_t ctrl3)
{
    // IEEE 802.11ax-2021 9.4.2.248.2 HE MAC Capabilities
    // Bit 0 is reserved
    m_channelWidthSet = (ctrl1 >> 1) & 0x7f;
    m_puncturedPreambleRx = (ctrl1 >> 8) & 0x0f;
    m_deviceClass = (ctrl1 >> 12) & 0x01;
    m_ldpcCodingInPayload = (ctrl1 >> 13) & 0x01;
    m_heSuPpdu1xHeLtf800nsGi = (ctrl1 >> 14) & 0x01;
    m_midambleRxMaxNsts = (ctrl1 >> 15) & 0x03;
    m_ndp4xHeLtfAnd32msGi = (ctrl1 >> 17) & 0x01;
    m_stbcTxLeq80MHz = (ctrl1 >> 18) & 0x01;
    m_stbcRxLeq80MHz = (ctrl1 >> 19) & 0x01;
    m_dopplerTx = (ctrl1 >> 20) & 0x01;
    m_dopplerRx = (ctrl1 >> 21) & 0x01;
    m_fullBwUlMuMimo = (ctrl1 >> 22) & 0x01;
    m_partialBwUlMuMimo = (ctrl1 >> 23) & 0x01;
    m_dcmMaxConstellationTx = (ctrl1 >> 24) & 0x03;
    m_dcmMaxNssTx = (ctrl1 >> 26) & 0x01;
    m_dcmMaxConstellationRx = (ctrl1 >> 27) & 0x03;
    m_dcmMaxNssRx = (ctrl1 >> 29) & 0x01;
    m_rxPartialBwSuInHeMu = (ctrl1 >> 30) & 0x01;
    m_suBeamformer = (ctrl1 >> 31) & 0x01;
    m_suBeamformee = (ctrl1 >> 32) & 0x01;
    m_muBeamformer = (ctrl1 >> 33) & 0x01;
    m_beamformeeStsForSmallerOrEqualThan80Mhz = (ctrl1 >> 34) & 0x07;
    m_beamformeeStsForLargerThan80Mhz = (ctrl1 >> 37) & 0x07;
    m_numberOfSoundingDimensionsForSmallerOrEqualThan80Mhz = (ctrl1 >> 40) & 0x07;
    m_numberOfSoundingDimensionsForLargerThan80Mhz = (ctrl1 >> 43) & 0x07;
    m_ngEqual16ForSuFeedbackSupport = (ctrl1 >> 46) & 0x01;
    m_ngEqual16ForMuFeedbackSupport = (ctrl1 >> 47) & 0x01;
    m_codebookSize42SuFeedback = (ctrl1 >> 48) & 0x01;
    m_codebookSize75MuFeedback = (ctrl1 >> 49) & 0x01;
    m_triggeredSuBfFeedback = (ctrl1 >> 50) & 0x01;
    m_triggeredMuBfFeedback = (ctrl1 >> 51) & 0x01;
    m_triggeredCqiFeedback = (ctrl1 >> 52) & 0x01;
    m_erPartialBandwidth = (ctrl1 >> 53) & 0x01;
    m_dlMuMimoOnPartialBandwidth = (ctrl1 >> 54) & 0x01;
    m_ppeThresholdPresent = (ctrl1 >> 55) & 0x01;
    m_psrBasedSrSupport = (ctrl1 >> 56) & 0x01;
    m_powerBoostFactorAlphaSupport = (ctrl1 >> 57) & 0x01;
    m_hePpdu4xHeLtf800nsGi = ctrl2 & 0x01;
    m_maxNc = (ctrl1 >> 59) & 0x07;
    m_stbcTxGt80MHz = (ctrl1 >> 62) & 0x01;
    m_stbcRxGt80MHz = (ctrl1 >> 63) & 0x01;
    m_heErSuPpdu4xHeLtf08sGi = ctrl2 & 0x01;
    m_hePpdu20MHzIn40MHz24GHz = (ctrl2 >> 1) & 0x01;
    m_hePpdu20MHzIn160MHz = (ctrl2 >> 2) & 0x01;
    m_hePpdu80MHzIn160MHz = (ctrl2 >> 3) & 0x01;
    m_heErSuPpdu1xHeLtf08Gi = (ctrl2 >> 4) & 0x01;
    m_midamble2xAnd1xHeLtf = (ctrl2 >> 5) & 0x01;
    m_dcmMaxRu = (ctrl2 >> 6) & 0x03;
    m_longerThan16HeSigbOfdm = (ctrl2 >> 8) & 0x01;
    m_nonTriggeredCqiFeedback = (ctrl2 >> 9) & 0x01;
    m_tx1024QamLt242Ru = (ctrl2 >> 10) & 0x01;
    m_rx1024QamLt242Ru = (ctrl2 >> 11) & 0x01;
    m_rxFullBwSuInHeMuCompressedSigB = (ctrl2 >> 12) & 0x01;
    m_rxFullBwSuInHeMuNonCompressedSigB = (ctrl2 >> 13) & 0x01;
    m_nominalPacketPadding = (ctrl2 >> 14) & 0x03;
    m_maxHeLtfRxInHeMuMoreThanOneRu = ctrl3 & 0x01;
    // IEEE 802.11ax-2021 9.4.2.248.2 HE MAC Capabilities
    // Bits 81-87 are reserved
}
 
uint64_t
HeCapabilities::GetHePhyCapabilitiesInfo1() const
{
    uint64_t val = 0;
    // IEEE 802.11ax-2021 9.4.2.248.2 HE MAC Capabilities
    // Bit 0 is reserved
    val |= (m_channelWidthSet & 0x7f) << 1;
    val |= (m_puncturedPreambleRx & 0x0f) << 8;
    val |= (m_deviceClass & 0x01) << 12;
    val |= (m_ldpcCodingInPayload & 0x01) << 13;
    val |= (m_heSuPpdu1xHeLtf800nsGi & 0x01) << 14;
    val |= (m_midambleRxMaxNsts & 0x03) << 15;
    val |= (m_ndp4xHeLtfAnd32msGi & 0x01) << 17;
    val |= (m_stbcTxLeq80MHz & 0x01) << 18;
    val |= (m_stbcRxLeq80MHz & 0x01) << 19;
    val |= (m_dopplerTx & 0x01) << 20;
    val |= (m_dopplerRx & 0x01) << 21;
    val |= (m_fullBwUlMuMimo & 0x01) << 22;
    val |= (m_partialBwUlMuMimo & 0x01) << 23;
    val |= (m_dcmMaxConstellationTx & 0x03) << 24;
    val |= (m_dcmMaxNssTx & 0x01) << 26;
    val |= (m_dcmMaxConstellationRx & 0x03) << 27;
    val |= (m_dcmMaxNssRx & 0x01) << 29;
    val |= (m_rxPartialBwSuInHeMu & 0x01) << 30;
    val |= (m_suBeamformer & 0x01) << 31;
    val |= (static_cast<uint64_t>(m_suBeamformee) & 0x01) << 32;
    val |= (static_cast<uint64_t>(m_muBeamformer) & 0x01) << 33;
    val |= (static_cast<uint64_t>(m_beamformeeStsForSmallerOrEqualThan80Mhz) & 0x07) << 34;
    val |= (static_cast<uint64_t>(m_beamformeeStsForLargerThan80Mhz) & 0x07) << 37;
    val |= (static_cast<uint64_t>(m_numberOfSoundingDimensionsForSmallerOrEqualThan80Mhz) & 0x07)
           << 40;
    val |= (static_cast<uint64_t>(m_numberOfSoundingDimensionsForLargerThan80Mhz) & 0x07) << 43;
    val |= (static_cast<uint64_t>(m_ngEqual16ForSuFeedbackSupport) & 0x01) << 46;
    val |= (static_cast<uint64_t>(m_ngEqual16ForMuFeedbackSupport) & 0x01) << 47;
    val |= (static_cast<uint64_t>(m_codebookSize42SuFeedback) & 0x01) << 48;
    val |= (static_cast<uint64_t>(m_codebookSize75MuFeedback) & 0x01) << 49;
    val |= (static_cast<uint64_t>(m_triggeredSuBfFeedback) & 0x01) << 50;
    val |= (static_cast<uint64_t>(m_triggeredMuBfFeedback) & 0x01) << 51;
    val |= (static_cast<uint64_t>(m_triggeredCqiFeedback) & 0x01) << 52;
    val |= (static_cast<uint64_t>(m_erPartialBandwidth) & 0x01) << 53;
    val |= (static_cast<uint64_t>(m_dlMuMimoOnPartialBandwidth) & 0x01) << 54;
    val |= (static_cast<uint64_t>(m_ppeThresholdPresent) & 0x01) << 55;
    val |= (static_cast<uint64_t>(m_psrBasedSrSupport) & 0x01) << 56;
    val |= (static_cast<uint64_t>(m_powerBoostFactorAlphaSupport) & 0x01) << 57;
    val |= (static_cast<uint64_t>(m_hePpdu4xHeLtf800nsGi) & 0x01) << 58;
    val |= (static_cast<uint64_t>(m_maxNc) & 0x07) << 59;
    val |= (static_cast<uint64_t>(m_stbcTxGt80MHz) & 0x01) << 62;
    val |= (static_cast<uint64_t>(m_stbcRxGt80MHz) & 0x01) << 63;
    return val;
}
 
uint16_t
HeCapabilities::GetHePhyCapabilitiesInfo2() const
{
    uint16_t val = 0;
    val |= m_heErSuPpdu4xHeLtf08sGi & 0x01;
    val |= (m_hePpdu20MHzIn40MHz24GHz & 0x01) << 1;
    val |= (m_hePpdu20MHzIn160MHz & 0x01) << 2;
    val |= (m_hePpdu80MHzIn160MHz & 0x01) << 3;
    val |= (m_heErSuPpdu1xHeLtf08Gi & 0x01) << 4;
    val |= (m_midamble2xAnd1xHeLtf & 0x01) << 5;
    val |= (m_dcmMaxRu & 0x03) << 6;
    val |= (m_longerThan16HeSigbOfdm & 0x01) << 8;
    val |= (m_nonTriggeredCqiFeedback & 0x01) << 9;
    val |= (m_tx1024QamLt242Ru & 0x01) << 10;
    val |= (m_rx1024QamLt242Ru & 0x01) << 11;
    val |= (m_rxFullBwSuInHeMuCompressedSigB & 0x01) << 12;
    val |= (m_rxFullBwSuInHeMuNonCompressedSigB & 0x01) << 13;
    val |= (m_nominalPacketPadding & 0x03) << 14;
    return val;
}
 
uint8_t
HeCapabilities::GetHePhyCapabilitiesInfo3() const
{
    uint8_t val = 0;
    val |= m_maxHeLtfRxInHeMuMoreThanOneRu & 0x01;
    // IEEE 802.11ax-2021 9.4.2.248.2 HE MAC Capabilities
    // Bits 81-87 are reserved
    return val;
}
 
void
HeCapabilities::SetSupportedMcsAndNss(uint16_t ctrl)
{
    m_highestNssSupportedM1 = ctrl & 0x07;
    m_highestMcsSupported = (ctrl >> 3) & 0x07;
    NS_ASSERT(m_highestMcsSupported <= 4);
    uint8_t i;
    for (i = 0; i < 5; i++)
    {
        m_txBwMap[i] = (ctrl >> (6 + i)) & 0x01;
    }
    for (i = 0; i < 5; i++)
    {
        m_rxBwMap[i] = (ctrl >> (11 + i)) & 0x01;
    }
    // TODO: MCS NSS Descriptors
}
 
uint16_t
HeCapabilities::GetSupportedMcsAndNss() const
{
    uint16_t val = 0;
    val |= m_highestNssSupportedM1 & 0x07;
    val |= (m_highestMcsSupported & 0x07) << 3;
    uint8_t i;
    for (i = 0; i < 5; i++)
    {
        val |= (m_txBwMap[i] & 0x01) << (6 + 1);
    }
    for (i = 0; i < 5; i++)
    {
        val |= (m_rxBwMap[i] & 0x01) << (11 + 1);
    }
    // TODO: MCS NSS Descriptors
    return val;
}
 
// TODO: PPE threshold
 
bool
HeCapabilities::IsSupportedTxMcs(uint8_t mcs) const
{
    NS_ASSERT(mcs >= 0 && mcs <= 11);
    if (mcs <= 7)
    {
        return true;
    }
    if (mcs == 8 && m_highestMcsSupported >= 1)
    {
        return true;
    }
    if (mcs == 9 && m_highestMcsSupported >= 2)
    {
        return true;
    }
    if (mcs == 10 && m_highestMcsSupported >= 3)
    {
        return true;
    }
    if (mcs == 11 && m_highestMcsSupported == 4)
    {
        return true;
    }
    return false;
}
 
bool
HeCapabilities::IsSupportedRxMcs(uint8_t mcs) const
{
    NS_ASSERT(mcs >= 0 && mcs <= 11);
    if (mcs <= 7)
    {
        return true;
    }
    if (mcs == 8 && m_highestMcsSupported >= 1)
    {
        return true;
    }
    if (mcs == 9 && m_highestMcsSupported >= 2)
    {
        return true;
    }
    if (mcs == 10 && m_highestMcsSupported >= 3)
    {
        return true;
    }
    if (mcs == 11 && m_highestMcsSupported == 4)
    {
        return true;
    }
    return false;
}
 
void
HeCapabilities::SetChannelWidthSet(uint8_t channelWidthSet)
{
    NS_ASSERT(channelWidthSet <= 0x2f);
    m_channelWidthSet = channelWidthSet;
}
 
void
HeCapabilities::SetLdpcCodingInPayload(uint8_t ldpcCodingInPayload)
{
    m_ldpcCodingInPayload = ldpcCodingInPayload;
}
 
void
HeCapabilities::SetHeSuPpdu1xHeLtf800nsGi(bool heSuPpdu1xHeLtf800nsGi)
{
    m_heSuPpdu1xHeLtf800nsGi = (heSuPpdu1xHeLtf800nsGi ? 1 : 0);
}
 
void
HeCapabilities::SetHePpdu4xHeLtf800nsGi(bool hePpdu4xHeLtf800nsGi)
{
    m_hePpdu4xHeLtf800nsGi = (hePpdu4xHeLtf800nsGi ? 1 : 0);
}
 
void
HeCapabilities::SetMaxAmpduLength(uint32_t maxAmpduLength)
{
    for (uint8_t i = 0; i <= 3; i++)
    {
        if ((1UL << (20 + i)) - 1 == maxAmpduLength)
        {
            m_maxAmpduLengthExponent = i;
            return;
        }
    }
    NS_ABORT_MSG("Invalid A-MPDU Max Length value");
}
 
void
HeCapabilities::SetHighestMcsSupported(uint8_t mcs)
{
    NS_ASSERT(mcs >= 7 && mcs <= 11);
    m_highestMcsSupported = mcs - 7;
}
 
void
HeCapabilities::SetHighestNssSupported(uint8_t nss)
{
    NS_ASSERT(nss >= 1 && nss <= 8);
    m_highestNssSupportedM1 = nss - 1;
}
 
uint8_t
HeCapabilities::GetChannelWidthSet() const
{
    return m_channelWidthSet;
}
 
uint8_t
HeCapabilities::GetLdpcCodingInPayload() const
{
    return m_ldpcCodingInPayload;
}
 
bool
HeCapabilities::GetHeSuPpdu1xHeLtf800nsGi() const
{
    return (m_heSuPpdu1xHeLtf800nsGi == 1);
}
 
bool
HeCapabilities::GetHePpdu4xHeLtf800nsGi() const
{
    return (m_hePpdu4xHeLtf800nsGi == 1);
}
 
uint8_t
HeCapabilities::GetHighestMcsSupported() const
{
    return m_highestMcsSupported + 7;
}
 
uint8_t
HeCapabilities::GetHighestNssSupported() const
{
    return m_highestNssSupportedM1 + 1;
}
 
uint32_t
HeCapabilities::GetMaxAmpduLength() const
{
    return std::min<uint32_t>((1UL << (20 + m_maxAmpduLengthExponent)) - 1, 6500631);
}
 
} // namespace ns3