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wifi: HE-SIG-B compression is used if an RU occupies all 20 MHz subchannels within the PPDU bandwidth

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Sébastien Deronne
2024-12-12 20:57:47 +01:00
parent 20d377d27d
commit c7e6a88968
1 changed files with 6 additions and 1 deletions
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7
src/wifi/model/wifi-tx-vector.cc
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@@ -652,7 +652,12 @@ WifiTxVector::GetHeMuUserInfoMap()
bool
WifiTxVector::IsSigBCompression() const
{
return IsDlMuMimo() && !IsDlOfdma();
// SIG-B compression is used in case of full-bandwidth MU-MIMO transmission (27.3.11.8.2
// HE-SIG-B content channels in IEEE802.11ax-2021) or if a single RU occupies the whole 160 MHz
// bandwidth (27.3.11.8.3 Common field in IEEE802.11ax-2021)
return (IsDlMuMimo() && !IsDlOfdma()) ||
((m_muUserInfos.size() == 1) && (m_channelWidth >= MHz_u{160}) &&
(m_muUserInfos.cbegin()->second.ru.GetRuType() == HeRu::GetRuType(m_channelWidth)));
}
void