Attachment #1987 for bug #2066

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(-)a/src/wifi/model/yans-wifi-phy.cc (-8 / +37 lines)

Lines 173-179	Link Here

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    m_channelNumber (1),

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    m_channelNumber (1),

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    m_endRxEvent (),

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    m_endRxEvent (),

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    m_channelStartingFrequency (0),

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    m_channelStartingFrequency (0),

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    m_mpdusNum(0)

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    m_mpdusNum(0),

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    m_preambleFirstMpduReceived (false)

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  NS_LOG_FUNCTION (this);

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  NS_LOG_FUNCTION (this);

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  m_random = CreateObject<UniformRandomVariable> ();

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  m_random = CreateObject<UniformRandomVariable> ();

Lines 540-545	Link Here

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    case YansWifiPhy::SWITCHING:

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    case YansWifiPhy::SWITCHING:

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      NS_LOG_DEBUG ("drop packet because of channel switching");

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      NS_LOG_DEBUG ("drop packet because of channel switching");

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      NotifyRxDrop (packet);

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      NotifyRxDrop (packet);

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      if (preamble == WIFI_PREAMBLE_NONE && packetType == 2)

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          m_preambleFirstMpduReceived = false;

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/*

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/*

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       * Packets received on the upcoming channel are added to the event list

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       * Packets received on the upcoming channel are added to the event list

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       * during the switching state. This way the medium can be correctly sensed

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       * during the switching state. This way the medium can be correctly sensed

Lines 587-592	Link Here

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                  //received the first MPDU in an MPDU

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                  //received the first MPDU in an MPDU

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                  m_mpdusNum = ampduTag.GetNoOfMpdus()-1;

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                  m_mpdusNum = ampduTag.GetNoOfMpdus()-1;

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                  m_preambleFirstMpduReceived = true;

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              else if (preamble == WIFI_PREAMBLE_NONE && packet->PeekPacketTag (ampduTag) && m_mpdusNum > 0)

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              else if (preamble == WIFI_PREAMBLE_NONE && packet->PeekPacketTag (ampduTag) && m_mpdusNum > 0)

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Lines 617-624	Link Here

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              NotifyRxBegin (packet);

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              NotifyRxBegin (packet);

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              m_interference.NotifyRxStart ();

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              m_interference.NotifyRxStart ();

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              m_endRxEvent = Simulator::Schedule (rxDuration, &YansWifiPhy::EndReceive, this,

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              m_endRxEvent = Simulator::Schedule (rxDuration, &YansWifiPhy::EndReceive, this,

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                                                  packet,

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                                                  packet, preamble, packetType, event);

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                                                  event);

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          else

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          else

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Lines 632-643	Link Here

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          NS_LOG_DEBUG ("drop packet because signal power too Small (" <<

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          NS_LOG_DEBUG ("drop packet because signal power too Small (" <<

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                        rxPowerW << "<" << m_edThresholdW << ")");

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                        rxPowerW << "<" << m_edThresholdW << ")");

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          NotifyRxDrop (packet);

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          NotifyRxDrop (packet);

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          if (preamble == WIFI_PREAMBLE_NONE && packetType == 2)

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              m_preambleFirstMpduReceived = false;

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          goto maybeCcaBusy;

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          goto maybeCcaBusy;

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      break;

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      break;

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    case YansWifiPhy::SLEEP:

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    case YansWifiPhy::SLEEP:

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      NS_LOG_DEBUG ("drop packet because in sleep mode");

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      NS_LOG_DEBUG ("drop packet because in sleep mode");

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      NotifyRxDrop (packet);

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      NotifyRxDrop (packet);

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      if (preamble == WIFI_PREAMBLE_NONE && packetType == 2)

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          m_preambleFirstMpduReceived = false;

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      break;

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      break;

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Lines 947-953	Link Here

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void

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void

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YansWifiPhy::EndReceive (Ptr<Packet> packet, Ptr<InterferenceHelper::Event> event)

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YansWifiPhy::EndReceive (Ptr<Packet> packet, enum WifiPreamble preamble, uint8_t packetType, Ptr<InterferenceHelper::Event> event)

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  NS_LOG_FUNCTION (this << packet << event);

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  NS_LOG_FUNCTION (this << packet << event);

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  NS_ASSERT (IsStateRx ());

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  NS_ASSERT (IsStateRx ());

Lines 956-965	Link Here

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  struct InterferenceHelper::SnrPer snrPer;

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  struct InterferenceHelper::SnrPer snrPer;

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  snrPer = m_interference.CalculateSnrPer (event);

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  snrPer = m_interference.CalculateSnrPer (event);

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  m_interference.NotifyRxEnd ();

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  m_interference.NotifyRxEnd ();

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  NS_LOG_DEBUG ("mode=" << (event->GetPayloadMode ().GetDataRate ()) <<

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  if(preamble == WIFI_PREAMBLE_NONE && m_preambleFirstMpduReceived == false)

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    NS_LOG_DEBUG ("Drop MPDU because no preamble has been received");

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    NotifyRxDrop (packet);

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    m_state->SwitchFromRxEndError (packet, snrPer.snr);

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  else

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    NS_LOG_DEBUG ("mode=" << (event->GetPayloadMode ().GetDataRate ()) <<

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                ", snr=" << snrPer.snr << ", per=" << snrPer.per << ", size=" << packet->GetSize ());

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                ", snr=" << snrPer.snr << ", per=" << snrPer.per << ", size=" << packet->GetSize ());

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  if (m_random->GetValue () > snrPer.per)

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    if (m_random->GetValue () > snrPer.per)

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      NotifyRxEnd (packet);

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      NotifyRxEnd (packet);

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      uint32_t dataRate500KbpsUnits;

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      uint32_t dataRate500KbpsUnits;

Lines 977-988	Link Here

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      NotifyMonitorSniffRx (packet, (uint16_t)GetChannelFrequencyMhz (), GetChannelNumber (), dataRate500KbpsUnits, isShortPreamble, signalDbm, noiseDbm);

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      NotifyMonitorSniffRx (packet, (uint16_t)GetChannelFrequencyMhz (), GetChannelNumber (), dataRate500KbpsUnits, isShortPreamble, signalDbm, noiseDbm);

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      m_state->SwitchFromRxEndOk (packet, snrPer.snr, event->GetPayloadMode (), event->GetPreambleType ());

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      m_state->SwitchFromRxEndOk (packet, snrPer.snr, event->GetPayloadMode (), event->GetPreambleType ());

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  else

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    else

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      /* failure. */

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      /* failure. */

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      NotifyRxDrop (packet);

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      NotifyRxDrop (packet);

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      m_state->SwitchFromRxEndError (packet, snrPer.snr);

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      m_state->SwitchFromRxEndError (packet, snrPer.snr);

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    if (preamble == WIFI_PREAMBLE_NONE && packetType == 2)

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      m_preambleFirstMpduReceived = false;

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int64_t

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int64_t

(-)a/src/wifi/model/yans-wifi-phy.h (-1 / +4 lines)

Lines 462-470	Link Here

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   * The last bit of the packet has arrived.

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   * The last bit of the packet has arrived.

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   * \param packet the packet that the last bit has arrived

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   * \param packet the packet that the last bit has arrived

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   * \param preamble the preamble of the arriving packet

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   * \param packetType The type of the received packet (values: 0 not an A-MPDU, 1 corresponds to any packets in an A-MPDU except the last one, 2 is the last packet in an A-MPDU)

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   * \param event the corresponding event of the first time the packet arrives

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   * \param event the corresponding event of the first time the packet arrives

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*/

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*/

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  void EndReceive (Ptr<Packet> packet, Ptr<InterferenceHelper::Event> event);

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  void EndReceive (Ptr<Packet> packet, enum WifiPreamble preamble, uint8_t packetType, Ptr<InterferenceHelper::Event> event);

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private:

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private:

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  virtual void DoInitialize (void);

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  virtual void DoInitialize (void);

Lines 540-545	Link Here

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  InterferenceHelper m_interference;    //!< Pointer to InterferenceHelper

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  InterferenceHelper m_interference;    //!< Pointer to InterferenceHelper

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  Time m_channelSwitchDelay;            //!< Time required to switch between channel

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  Time m_channelSwitchDelay;            //!< Time required to switch between channel

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  uint16_t m_mpdusNum;                  //!< carries the number of expected mpdus that are part of an A-MPDU

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  uint16_t m_mpdusNum;                  //!< carries the number of expected mpdus that are part of an A-MPDU

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  bool m_preambleFirstMpduReceived;     //!< Flag if the preamble of the first MPDU in an A-MPDU has been received

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};

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};

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} // namespace ns3

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} // namespace ns3

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