|
|
|---|
| 2914 |
} |
2914 |
} |
| 2915 |
|
2915 |
|
| 2916 |
WifiPreamble preamble; |
2916 |
WifiPreamble preamble; |
|
|
2917 |
Time aPPDUMaxTime = Seconds (0); |
| 2917 |
|
2918 |
|
| 2918 |
uint8_t tid = GetTid (peekedPacket, peekedHdr); |
2919 |
uint8_t tid = GetTid (peekedPacket, peekedHdr); |
| 2919 |
AcIndex ac = QosUtilsMapTidToAc (tid); |
2920 |
AcIndex ac = QosUtilsMapTidToAc (tid); |
|
|
|---|
| 2922 |
if (m_currentTxVector.GetMode ().GetModulationClass () == WIFI_MOD_CLASS_VHT) |
2923 |
if (m_currentTxVector.GetMode ().GetModulationClass () == WIFI_MOD_CLASS_VHT) |
| 2923 |
{ |
2924 |
{ |
| 2924 |
preamble = WIFI_PREAMBLE_VHT; |
2925 |
preamble = WIFI_PREAMBLE_VHT; |
|
|
2926 |
aPPDUMaxTime = MicroSeconds (5484); |
| 2925 |
} |
2927 |
} |
| 2926 |
else if (m_phy->GetGreenfield () && m_stationManager->GetGreenfieldSupported (m_currentHdr.GetAddr1 ())) |
2928 |
else if (m_phy->GetGreenfield () && m_stationManager->GetGreenfieldSupported (m_currentHdr.GetAddr1 ())) |
| 2927 |
{ |
2929 |
{ |
| 2928 |
preamble = WIFI_PREAMBLE_HT_GF; |
2930 |
preamble = WIFI_PREAMBLE_HT_GF; |
|
|
2931 |
aPPDUMaxTime = MilliSeconds (10); |
| 2929 |
} |
2932 |
} |
| 2930 |
else if (m_currentTxVector.GetMode ().GetModulationClass () == WIFI_MOD_CLASS_HT) |
2933 |
else if (m_currentTxVector.GetMode ().GetModulationClass () == WIFI_MOD_CLASS_HT) |
| 2931 |
{ |
2934 |
{ |
| 2932 |
preamble = WIFI_PREAMBLE_HT_MF; |
2935 |
preamble = WIFI_PREAMBLE_HT_MF; |
|
|
2936 |
aPPDUMaxTime = MilliSeconds (10); |
| 2933 |
} |
2937 |
} |
| 2934 |
else if (m_stationManager->GetShortPreambleEnabled ()) |
2938 |
else if (m_stationManager->GetShortPreambleEnabled ()) |
| 2935 |
{ |
2939 |
{ |
|
|
|---|
| 2940 |
preamble = WIFI_PREAMBLE_LONG; |
2944 |
preamble = WIFI_PREAMBLE_LONG; |
| 2941 |
} |
2945 |
} |
| 2942 |
|
2946 |
|
| 2943 |
//An HT STA shall not transmit a PPDU that has a duration that is greater than aPPDUMaxTime (10 milliseconds) |
2947 |
//A STA shall not transmit a PPDU that has a duration that is greater than aPPDUMaxTime |
| 2944 |
if (m_phy->CalculateTxDuration (aggregatedPacket->GetSize () + peekedPacket->GetSize () + peekedHdr.GetSize () + WIFI_MAC_FCS_LENGTH, m_currentTxVector, preamble, m_phy->GetFrequency ()) > MilliSeconds (10)) |
2948 |
if ((aPPDUMaxTime > Seconds (0)) && (m_phy->CalculateTxDuration (aggregatedPacket->GetSize () + peekedPacket->GetSize () + peekedHdr.GetSize () + WIFI_MAC_FCS_LENGTH, m_currentTxVector, preamble, m_phy->GetFrequency ()) > aPPDUMaxTime)) |
| 2945 |
{ |
2949 |
{ |
| 2946 |
NS_LOG_DEBUG ("no more packets can be aggregated to satisfy PPDU <= aPPDUMaxTime"); |
2950 |
NS_LOG_DEBUG ("no more packets can be aggregated to satisfy PPDU <= aPPDUMaxTime"); |
| 2947 |
return true; |
2951 |
return true; |