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wifi-phy.cc
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2005,2006 INRIA
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
* Sébastien Deronne <sebastien.deronne@gmail.com>
*/
#include "ns3/simulator.h"
#include "ns3/log.h"
#include "ns3/pointer.h"
#include "ns3/mobility-model.h"
#include "ns3/random-variable-stream.h"
#include "ns3/error-model.h"
#include "wifi-phy.h"
#include "wifi-phy-tag.h"
#include "ampdu-tag.h"
#include "wifi-utils.h"
#include "frame-capture-model.h"
#include "preamble-detection-model.h"
#include "wifi-radio-energy-model.h"
#include "error-rate-model.h"
#include "wifi-net-device.h"
#include "ht-configuration.h"
#include "he-configuration.h"
#include "mpdu-aggregator.h"
#include "wifi-phy-header.h"
#include <iostream>
#include <fstream>
#include <string>
namespace ns3 {
NS_LOG_COMPONENT_DEFINE ("WifiPhy");
/****************************************************************
* The actual WifiPhy class
****************************************************************/
NS_OBJECT_ENSURE_REGISTERED (WifiPhy);
/**
* This table maintains the mapping of valid ChannelNumber to
* Frequency/ChannelWidth pairs. If you want to make a channel applicable
* to all standards, then you may use the WIFI_PHY_STANDARD_UNSPECIFIED
* standard to represent this, as a wildcard. If you want to limit the
* configuration of a particular channel/frequency/width to a particular
* standard(s), then you can specify one or more such bindings.
*/
WifiPhy::ChannelToFrequencyWidthMap WifiPhy::m_channelToFrequencyWidth =
{
// 802.11b uses width of 22, while OFDM modes use width of 20
{ std::make_pair (1, WIFI_PHY_STANDARD_80211b), std::make_pair (2412, 22) },
{ std::make_pair (1, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2412, 20) },
{ std::make_pair (2, WIFI_PHY_STANDARD_80211b), std::make_pair (2417, 22) },
{ std::make_pair (2, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2417, 20) },
{ std::make_pair (3, WIFI_PHY_STANDARD_80211b), std::make_pair (2422, 22) },
{ std::make_pair (3, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2422, 20) },
{ std::make_pair (4, WIFI_PHY_STANDARD_80211b), std::make_pair (2427, 22) },
{ std::make_pair (4, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2427, 20) },
{ std::make_pair (5, WIFI_PHY_STANDARD_80211b), std::make_pair (2432, 22) },
{ std::make_pair (5, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2432, 20) },
{ std::make_pair (6, WIFI_PHY_STANDARD_80211b), std::make_pair (2437, 22) },
{ std::make_pair (6, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2437, 20) },
{ std::make_pair (7, WIFI_PHY_STANDARD_80211b), std::make_pair (2442, 22) },
{ std::make_pair (7, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2442, 20) },
{ std::make_pair (8, WIFI_PHY_STANDARD_80211b), std::make_pair (2447, 22) },
{ std::make_pair (8, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2447, 20) },
{ std::make_pair (9, WIFI_PHY_STANDARD_80211b), std::make_pair (2452, 22) },
{ std::make_pair (9, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2452, 20) },
{ std::make_pair (10, WIFI_PHY_STANDARD_80211b), std::make_pair (2457, 22) },
{ std::make_pair (10, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2457, 20) },
{ std::make_pair (11, WIFI_PHY_STANDARD_80211b), std::make_pair (2462, 22) },
{ std::make_pair (11, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2462, 20) },
{ std::make_pair (12, WIFI_PHY_STANDARD_80211b), std::make_pair (2467, 22) },
{ std::make_pair (12, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2467, 20) },
{ std::make_pair (13, WIFI_PHY_STANDARD_80211b), std::make_pair (2472, 22) },
{ std::make_pair (13, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (2472, 20) },
// Only defined for 802.11b
{ std::make_pair (14, WIFI_PHY_STANDARD_80211b), std::make_pair (2484, 22) },
// Now the 5GHz channels; UNSPECIFIED for 802.11a/n/ac/ax channels
// 20 MHz channels
{ std::make_pair (36, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5180, 20) },
{ std::make_pair (40, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5200, 20) },
{ std::make_pair (44, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5220, 20) },
{ std::make_pair (48, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5240, 20) },
{ std::make_pair (52, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5260, 20) },
{ std::make_pair (56, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5280, 20) },
{ std::make_pair (60, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5300, 20) },
{ std::make_pair (64, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5320, 20) },
{ std::make_pair (100, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5500, 20) },
{ std::make_pair (104, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5520, 20) },
{ std::make_pair (108, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5540, 20) },
{ std::make_pair (112, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5560, 20) },
{ std::make_pair (116, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5580, 20) },
{ std::make_pair (120, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5600, 20) },
{ std::make_pair (124, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5620, 20) },
{ std::make_pair (128, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5640, 20) },
{ std::make_pair (132, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5660, 20) },
{ std::make_pair (136, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5680, 20) },
{ std::make_pair (140, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5700, 20) },
{ std::make_pair (144, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5720, 20) },
{ std::make_pair (149, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5745, 20) },
{ std::make_pair (153, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5765, 20) },
{ std::make_pair (157, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5785, 20) },
{ std::make_pair (161, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5805, 20) },
{ std::make_pair (165, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5825, 20) },
{ std::make_pair (169, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5845, 20) },
{ std::make_pair (173, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5865, 20) },
{ std::make_pair (177, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5885, 20) },
{ std::make_pair (181, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5905, 20) },
// 40 MHz channels
{ std::make_pair (38, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5190, 40) },
{ std::make_pair (46, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5230, 40) },
{ std::make_pair (54, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5270, 40) },
{ std::make_pair (62, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5310, 40) },
{ std::make_pair (102, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5510, 40) },
{ std::make_pair (110, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5550, 40) },
{ std::make_pair (118, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5590, 40) },
{ std::make_pair (126, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5630, 40) },
{ std::make_pair (134, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5670, 40) },
{ std::make_pair (142, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5710, 40) },
{ std::make_pair (151, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5755, 40) },
{ std::make_pair (159, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5795, 40) },
{ std::make_pair (167, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5835, 40) },
{ std::make_pair (175, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5875, 40) },
// 80 MHz channels
{ std::make_pair (42, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5210, 80) },
{ std::make_pair (58, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5290, 80) },
{ std::make_pair (106, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5530, 80) },
{ std::make_pair (122, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5610, 80) },
{ std::make_pair (138, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5690, 80) },
{ std::make_pair (155, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5775, 80) },
{ std::make_pair (171, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5855, 80) },
// 160 MHz channels
{ std::make_pair (50, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5250, 160) },
{ std::make_pair (114, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5570, 160) },
{ std::make_pair (163, WIFI_PHY_STANDARD_UNSPECIFIED), std::make_pair (5815, 160) },
// 802.11p (10 MHz channels at the 5.855-5.925 band
{ std::make_pair (172, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5860, 10) },
{ std::make_pair (174, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5870, 10) },
{ std::make_pair (176, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5880, 10) },
{ std::make_pair (178, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5890, 10) },
{ std::make_pair (180, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5900, 10) },
{ std::make_pair (182, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5910, 10) },
{ std::make_pair (184, WIFI_PHY_STANDARD_80211_10MHZ), std::make_pair (5920, 10) }
};
TypeId
WifiPhy::GetTypeId (void)
{
static TypeId tid = TypeId ("ns3::WifiPhy")
.SetParent<Object> ()
.SetGroupName ("Wifi")
.AddAttribute ("Frequency",
"The operating center frequency (MHz)",
UintegerValue (0),
MakeUintegerAccessor (&WifiPhy::GetFrequency,
&WifiPhy::SetFrequency),
MakeUintegerChecker<uint16_t> ())
.AddAttribute ("ChannelWidth",
"Whether 5MHz, 10MHz, 20MHz, 22MHz, 40MHz, 80 MHz or 160 MHz.",
UintegerValue (20),
MakeUintegerAccessor (&WifiPhy::GetChannelWidth,
&WifiPhy::SetChannelWidth),
MakeUintegerChecker<uint16_t> (5, 160))
.AddAttribute ("ChannelNumber",
"If set to non-zero defined value, will control Frequency and ChannelWidth assignment",
UintegerValue (0),
MakeUintegerAccessor (&WifiPhy::SetChannelNumber,
&WifiPhy::GetChannelNumber),
MakeUintegerChecker<uint8_t> (0, 196))
.AddAttribute ("EnergyDetectionThreshold",
"The energy of a received signal should be higher than "
"this threshold (dbm) to allow the PHY layer to detect the signal.",
DoubleValue (-101.0),
MakeDoubleAccessor (&WifiPhy::SetEdThreshold),
MakeDoubleChecker<double> (),
TypeId::DEPRECATED, "Replaced by RxSensitivity.")
.AddAttribute ("RxSensitivity",
"The energy of a received signal should be higher than "
"this threshold (dBm) for the PHY to detect the signal.",
DoubleValue (-101.0),
MakeDoubleAccessor (&WifiPhy::SetRxSensitivity,
&WifiPhy::GetRxSensitivity),
MakeDoubleChecker<double> ())
.AddAttribute ("CcaEdThreshold",
"The energy of a non Wi-Fi received signal should be higher than "
"this threshold (dbm) to allow the PHY layer to declare CCA BUSY state. "
"This check is performed on the 20 MHz primary channel only.",
DoubleValue (-62.0),
MakeDoubleAccessor (&WifiPhy::SetCcaEdThreshold,
&WifiPhy::GetCcaEdThreshold),
MakeDoubleChecker<double> ())
.AddAttribute ("TxGain",
"Transmission gain (dB).",
DoubleValue (0.0),
MakeDoubleAccessor (&WifiPhy::SetTxGain,
&WifiPhy::GetTxGain),
MakeDoubleChecker<double> ())
.AddAttribute ("RxGain",
"Reception gain (dB).",
DoubleValue (0.0),
MakeDoubleAccessor (&WifiPhy::SetRxGain,
&WifiPhy::GetRxGain),
MakeDoubleChecker<double> ())
.AddAttribute ("TxPowerLevels",
"Number of transmission power levels available between "
"TxPowerStart and TxPowerEnd included.",
UintegerValue (1),
MakeUintegerAccessor (&WifiPhy::m_nTxPower),
MakeUintegerChecker<uint8_t> ())
.AddAttribute ("TxPowerEnd",
"Maximum available transmission level (dbm).",
DoubleValue (16.0206),
MakeDoubleAccessor (&WifiPhy::SetTxPowerEnd,
&WifiPhy::GetTxPowerEnd),
MakeDoubleChecker<double> ())
.AddAttribute ("TxPowerStart",
"Minimum available transmission level (dbm).",
DoubleValue (16.0206),
MakeDoubleAccessor (&WifiPhy::SetTxPowerStart,
&WifiPhy::GetTxPowerStart),
MakeDoubleChecker<double> ())
.AddAttribute ("RxNoiseFigure",
"Loss (dB) in the Signal-to-Noise-Ratio due to non-idealities in the receiver."
" According to Wikipedia (http://en.wikipedia.org/wiki/Noise_figure), this is "
"\"the difference in decibels (dB) between"
" the noise output of the actual receiver to the noise output of an "
" ideal receiver with the same overall gain and bandwidth when the receivers "
" are connected to sources at the standard noise temperature T0 (usually 290 K)\".",
DoubleValue (7),
MakeDoubleAccessor (&WifiPhy::SetRxNoiseFigure),
MakeDoubleChecker<double> ())
.AddAttribute ("State",
"The state of the PHY layer.",
PointerValue (),
MakePointerAccessor (&WifiPhy::m_state),
MakePointerChecker<WifiPhyStateHelper> ())
.AddAttribute ("ChannelSwitchDelay",
"Delay between two short frames transmitted on different frequencies.",
TimeValue (MicroSeconds (250)),
MakeTimeAccessor (&WifiPhy::m_channelSwitchDelay),
MakeTimeChecker ())
.AddAttribute ("Antennas",
"The number of antennas on the device.",
UintegerValue (1),
MakeUintegerAccessor (&WifiPhy::GetNumberOfAntennas,
&WifiPhy::SetNumberOfAntennas),
MakeUintegerChecker<uint8_t> (1, 8))
.AddAttribute ("MaxSupportedTxSpatialStreams",
"The maximum number of supported TX spatial streams."
"This parameter is only valuable for 802.11n/ac/ax STAs and APs.",
UintegerValue (1),
MakeUintegerAccessor (&WifiPhy::GetMaxSupportedTxSpatialStreams,
&WifiPhy::SetMaxSupportedTxSpatialStreams),
MakeUintegerChecker<uint8_t> (1, 8))
.AddAttribute ("MaxSupportedRxSpatialStreams",
"The maximum number of supported RX spatial streams."
"This parameter is only valuable for 802.11n/ac/ax STAs and APs.",
UintegerValue (1),
MakeUintegerAccessor (&WifiPhy::GetMaxSupportedRxSpatialStreams,
&WifiPhy::SetMaxSupportedRxSpatialStreams),
MakeUintegerChecker<uint8_t> (1, 8))
.AddAttribute ("ShortGuardEnabled",
"Whether or not short guard interval is enabled for HT/VHT transmissions."
"This parameter is only valuable for 802.11n/ac/ax STAs and APs.",
BooleanValue (false),
MakeBooleanAccessor (&WifiPhy::GetShortGuardInterval,
&WifiPhy::SetShortGuardInterval),
MakeBooleanChecker (),
TypeId::DEPRECATED, "Use the HtConfiguration instead")
.AddAttribute ("GuardInterval",
"Whether 800ns, 1600ns or 3200ns guard interval is used for HE transmissions."
"This parameter is only valuable for 802.11ax STAs and APs.",
TimeValue (NanoSeconds (3200)),
MakeTimeAccessor (&WifiPhy::GetGuardInterval,
&WifiPhy::SetGuardInterval),
MakeTimeChecker (NanoSeconds (800), NanoSeconds (3200)),
TypeId::DEPRECATED, "Use the HeConfiguration instead")
.AddAttribute ("GreenfieldEnabled",
"Whether or not Greenfield is enabled."
"This parameter is only valuable for 802.11n STAs and APs.",
BooleanValue (false),
MakeBooleanAccessor (&WifiPhy::GetGreenfield,
&WifiPhy::SetGreenfield),
MakeBooleanChecker (),
TypeId::DEPRECATED, "Use the HtConfiguration instead")
.AddAttribute ("ShortPlcpPreambleSupported",
"Whether or not short PLCP preamble is supported."
"This parameter is only valuable for 802.11b STAs and APs."
"Note: 802.11g APs and STAs always support short PLCP preamble.",
BooleanValue (false),
MakeBooleanAccessor (&WifiPhy::GetShortPlcpPreambleSupported,
&WifiPhy::SetShortPlcpPreambleSupported),
MakeBooleanChecker ())
.AddAttribute ("FrameCaptureModel",
"Ptr to an object that implements the frame capture model",
PointerValue (),
MakePointerAccessor (&WifiPhy::m_frameCaptureModel),
MakePointerChecker <FrameCaptureModel> ())
.AddAttribute ("PreambleDetectionModel",
"Ptr to an object that implements the preamble detection model",
PointerValue (),
MakePointerAccessor (&WifiPhy::m_preambleDetectionModel),
MakePointerChecker <PreambleDetectionModel> ())
.AddAttribute ("PostReceptionErrorModel",
"An optional packet error model can be added to the receive "
"packet process after any propagation-based (SNR-based) error "
"models have been applied. Typically this is used to force "
"specific packet drops, for testing purposes.",
PointerValue (),
MakePointerAccessor (&WifiPhy::m_postReceptionErrorModel),
MakePointerChecker<ErrorModel> ())
.AddTraceSource ("PhyTxBegin",
"Trace source indicating a packet "
"has begun transmitting over the channel medium",
MakeTraceSourceAccessor (&WifiPhy::m_phyTxBeginTrace),
"ns3::Packet::TracedCallback")
.AddTraceSource ("PhyTxEnd",
"Trace source indicating a packet "
"has been completely transmitted over the channel. "
"NOTE: the only official WifiPhy implementation "
"available to this date never fires "
"this trace source.",
MakeTraceSourceAccessor (&WifiPhy::m_phyTxEndTrace),
"ns3::Packet::TracedCallback")
.AddTraceSource ("PhyTxDrop",
"Trace source indicating a packet "
"has been dropped by the device during transmission",
MakeTraceSourceAccessor (&WifiPhy::m_phyTxDropTrace),
"ns3::Packet::TracedCallback")
.AddTraceSource ("PhyRxBegin",
"Trace source indicating a packet "
"has begun being received from the channel medium "
"by the device",
MakeTraceSourceAccessor (&WifiPhy::m_phyRxBeginTrace),
"ns3::Packet::TracedCallback")
.AddTraceSource ("PhyRxEnd",
"Trace source indicating a packet "
"has been completely received from the channel medium "
"by the device",
MakeTraceSourceAccessor (&WifiPhy::m_phyRxEndTrace),
"ns3::Packet::TracedCallback")
.AddTraceSource ("PhyRxDrop",
"Trace source indicating a packet "
"has been dropped by the device during reception",
MakeTraceSourceAccessor (&WifiPhy::m_phyRxDropTrace),
"ns3::Packet::TracedCallback")
.AddTraceSource ("MonitorSnifferRx",
"Trace source simulating a wifi device in monitor mode "
"sniffing all received frames",
MakeTraceSourceAccessor (&WifiPhy::m_phyMonitorSniffRxTrace),
"ns3::WifiPhy::MonitorSnifferRxTracedCallback")
.AddTraceSource ("MonitorSnifferTx",
"Trace source simulating the capability of a wifi device "
"in monitor mode to sniff all frames being transmitted",
MakeTraceSourceAccessor (&WifiPhy::m_phyMonitorSniffTxTrace),
"ns3::WifiPhy::MonitorSnifferTxTracedCallback")
.AddTraceSource ("EndOfHePreamble",
"Trace source indicating the end of the 802.11ax preamble (after training fields)",
MakeTraceSourceAccessor (&WifiPhy::m_phyEndOfHePreambleTrace),
"ns3::WifiPhy::EndOfHePreambleTracedCallback")
;
return tid;
}
WifiPhy::WifiPhy ()
: m_txMpduReferenceNumber (0xffffffff),
m_rxMpduReferenceNumber (0xffffffff),
m_endRxEvent (),
m_endPlcpRxEvent (),
m_endPreambleDetectionEvent (),
m_standard (WIFI_PHY_STANDARD_UNSPECIFIED),
m_isConstructed (false),
m_channelCenterFrequency (0),
m_initialFrequency (0),
m_frequencyChannelNumberInitialized (false),
m_channelWidth (0),
m_channelAccessRequested (false),
m_txSpatialStreams (0),
m_rxSpatialStreams (0),
m_channelNumber (0),
m_initialChannelNumber (0),
m_totalAmpduSize (0),
m_totalAmpduNumSymbols (0),
m_currentEvent (0),
m_wifiRadioEnergyModel (0),
m_timeLastPreambleDetected (Seconds (0))
{
NS_LOG_FUNCTION (this);
m_random = CreateObject<UniformRandomVariable> ();
m_state = CreateObject<WifiPhyStateHelper> ();
}
WifiPhy::~WifiPhy ()
{
NS_LOG_FUNCTION (this);
}
void
WifiPhy::DoDispose (void)
{
NS_LOG_FUNCTION (this);
m_endRxEvent.Cancel ();
m_endPlcpRxEvent.Cancel ();
m_endPreambleDetectionEvent.Cancel ();
m_device = 0;
m_mobility = 0;
m_state = 0;
m_wifiRadioEnergyModel = 0;
m_postReceptionErrorModel = 0;
m_deviceRateSet.clear ();
m_deviceMcsSet.clear ();
}
void
WifiPhy::DoInitialize (void)
{
NS_LOG_FUNCTION (this);
m_isConstructed = true;
if (m_frequencyChannelNumberInitialized == true)
{
NS_LOG_DEBUG ("Frequency already initialized");
return;
}
InitializeFrequencyChannelNumber ();
}
Ptr<WifiPhyStateHelper>
WifiPhy::GetState (void) const
{
return m_state;
}
void
WifiPhy::SetReceiveOkCallback (RxOkCallback callback)
{
m_state->SetReceiveOkCallback (callback);
}
void
WifiPhy::SetReceiveErrorCallback (RxErrorCallback callback)
{
m_state->SetReceiveErrorCallback (callback);
}
void
WifiPhy::RegisterListener (WifiPhyListener *listener)
{
m_state->RegisterListener (listener);
}
void
WifiPhy::UnregisterListener (WifiPhyListener *listener)
{
m_state->UnregisterListener (listener);
}
void
WifiPhy::SetCapabilitiesChangedCallback (Callback<void> callback)
{
m_capabilitiesChangedCallback = callback;
}
void
WifiPhy::InitializeFrequencyChannelNumber (void)
{
NS_LOG_FUNCTION (this);
NS_ASSERT_MSG (m_frequencyChannelNumberInitialized == false, "Initialization called twice");
// If frequency has been set to a non-zero value during attribute
// construction phase, the frequency and channel width will drive the
// initial configuration. If frequency has not been set, but both
// standard and channel number have been set, that pair will instead
// drive the configuration, and frequency and channel number will be
// aligned
if (m_initialFrequency != 0)
{
SetFrequency (m_initialFrequency);
}
else if (m_initialChannelNumber != 0 && GetStandard () != WIFI_PHY_STANDARD_UNSPECIFIED)
{
SetChannelNumber (m_initialChannelNumber);
}
else if (m_initialChannelNumber != 0 && GetStandard () == WIFI_PHY_STANDARD_UNSPECIFIED)
{
NS_FATAL_ERROR ("Error, ChannelNumber " << +GetChannelNumber () << " was set by user, but neither a standard nor a frequency");
}
m_frequencyChannelNumberInitialized = true;
}
void
WifiPhy::SetEdThreshold (double threshold)
{
SetRxSensitivity (threshold);
}
void
WifiPhy::SetRxSensitivity (double threshold)
{
NS_LOG_FUNCTION (this << threshold);
m_rxSensitivityW = DbmToW (threshold);
}
double
WifiPhy::GetRxSensitivity (void) const
{
return WToDbm (m_rxSensitivityW);
}
void
WifiPhy::SetCcaEdThreshold (double threshold)
{
NS_LOG_FUNCTION (this << threshold);
m_ccaEdThresholdW = DbmToW (threshold);
}
double
WifiPhy::GetCcaEdThreshold (void) const
{
return WToDbm (m_ccaEdThresholdW);
}
void
WifiPhy::SetRxNoiseFigure (double noiseFigureDb)
{
NS_LOG_FUNCTION (this << noiseFigureDb);
m_interference.SetNoiseFigure (DbToRatio (noiseFigureDb));
m_interference.SetNumberOfReceiveAntennas (GetNumberOfAntennas ());
}
void
WifiPhy::SetTxPowerStart (double start)
{
NS_LOG_FUNCTION (this << start);
m_txPowerBaseDbm = start;
}
double
WifiPhy::GetTxPowerStart (void) const
{
return m_txPowerBaseDbm;
}
void
WifiPhy::SetTxPowerEnd (double end)
{
NS_LOG_FUNCTION (this << end);
m_txPowerEndDbm = end;
}
double
WifiPhy::GetTxPowerEnd (void) const
{
return m_txPowerEndDbm;
}
void
WifiPhy::SetNTxPower (uint8_t n)
{
NS_LOG_FUNCTION (this << +n);
m_nTxPower = n;
}
uint8_t
WifiPhy::GetNTxPower (void) const
{
return m_nTxPower;
}
void
WifiPhy::SetTxGain (double gain)
{
NS_LOG_FUNCTION (this << gain);
m_txGainDb = gain;
}
double
WifiPhy::GetTxGain (void) const
{
return m_txGainDb;
}
void
WifiPhy::SetRxGain (double gain)
{
NS_LOG_FUNCTION (this << gain);
m_rxGainDb = gain;
}
double
WifiPhy::GetRxGain (void) const
{
return m_rxGainDb;
}
void
WifiPhy::SetGreenfield (bool greenfield)
{
NS_LOG_FUNCTION (this << greenfield);
Ptr<WifiNetDevice> device = DynamicCast<WifiNetDevice> (GetDevice ());
if (device)
{
Ptr<HtConfiguration> htConfiguration = device->GetHtConfiguration ();
if (htConfiguration)
{
htConfiguration->SetGreenfieldSupported (greenfield);
}
}
m_greenfield = greenfield;
}
bool
WifiPhy::GetGreenfield (void) const
{
Ptr<WifiNetDevice> device = DynamicCast<WifiNetDevice> (GetDevice ());
if (device)
{
Ptr<HtConfiguration> htConfiguration = device->GetHtConfiguration ();
if (htConfiguration)
{
return htConfiguration->GetGreenfieldSupported ();
}
}
return m_greenfield;
}
void
WifiPhy::SetShortGuardInterval (bool shortGuardInterval)
{
NS_LOG_FUNCTION (this << shortGuardInterval);
Ptr<WifiNetDevice> device = DynamicCast<WifiNetDevice> (GetDevice ());
if (device)
{
Ptr<HtConfiguration> htConfiguration = device->GetHtConfiguration ();
if (htConfiguration)
{
htConfiguration->SetShortGuardIntervalSupported (shortGuardInterval);
}
}
m_shortGuardInterval = shortGuardInterval;
}
bool
WifiPhy::GetShortGuardInterval (void) const
{
Ptr<WifiNetDevice> device = DynamicCast<WifiNetDevice> (GetDevice ());
if (device)
{
Ptr<HtConfiguration> htConfiguration = device->GetHtConfiguration ();
if (htConfiguration)
{
return htConfiguration->GetShortGuardIntervalSupported ();
}
}
return m_shortGuardInterval;
}
void
WifiPhy::SetGuardInterval (Time guardInterval)
{
NS_LOG_FUNCTION (this << guardInterval);
NS_ASSERT (guardInterval == NanoSeconds (800) || guardInterval == NanoSeconds (1600) || guardInterval == NanoSeconds (3200));
Ptr<WifiNetDevice> device = DynamicCast<WifiNetDevice> (GetDevice ());
if (device)
{
Ptr<HeConfiguration> heConfiguration = device->GetHeConfiguration ();
if (heConfiguration)
{
heConfiguration->SetGuardInterval (guardInterval);
}
}
m_guardInterval = guardInterval;
}
Time
WifiPhy::GetGuardInterval (void) const
{
Ptr<WifiNetDevice> device = DynamicCast<WifiNetDevice> (GetDevice ());
if (device)
{
Ptr<HeConfiguration> heConfiguration = device->GetHeConfiguration ();
if (heConfiguration)
{
return heConfiguration->GetGuardInterval ();
}
}
return m_guardInterval;
}
void
WifiPhy::SetShortPlcpPreambleSupported (bool enable)
{
NS_LOG_FUNCTION (this << enable);
m_shortPreamble = enable;
}
bool
WifiPhy::GetShortPlcpPreambleSupported (void) const
{
return m_shortPreamble;
}
void
WifiPhy::SetDevice (const Ptr<NetDevice> device)
{
m_device = device;
//TODO: to be removed once deprecated API is cleaned up
Ptr<HtConfiguration> htConfiguration = DynamicCast<WifiNetDevice> (device)->GetHtConfiguration ();
if (htConfiguration)
{
htConfiguration->SetShortGuardIntervalSupported (m_shortGuardInterval);
htConfiguration->SetGreenfieldSupported (m_greenfield);
}
Ptr<HeConfiguration> heConfiguration = DynamicCast<WifiNetDevice> (device)->GetHeConfiguration ();
if (heConfiguration)
{
heConfiguration->SetGuardInterval (m_guardInterval);
}
}
Ptr<NetDevice>
WifiPhy::GetDevice (void) const
{
return m_device;
}
void
WifiPhy::SetMobility (const Ptr<MobilityModel> mobility)
{
m_mobility = mobility;
}
Ptr<MobilityModel>
WifiPhy::GetMobility (void) const
{
if (m_mobility != 0)
{
return m_mobility;
}
else
{
return m_device->GetNode ()->GetObject<MobilityModel> ();
}
}
void
WifiPhy::SetErrorRateModel (const Ptr<ErrorRateModel> rate)
{
m_interference.SetErrorRateModel (rate);
m_interference.SetNumberOfReceiveAntennas (GetNumberOfAntennas ());
}
void
WifiPhy::SetPostReceptionErrorModel (const Ptr<ErrorModel> em)
{
NS_LOG_FUNCTION (this << em);
m_postReceptionErrorModel = em;
}
void
WifiPhy::SetFrameCaptureModel (const Ptr<FrameCaptureModel> model)
{
m_frameCaptureModel = model;
}
void
WifiPhy::SetPreambleDetectionModel (const Ptr<PreambleDetectionModel> model)
{
m_preambleDetectionModel = model;
}
void
WifiPhy::SetWifiRadioEnergyModel (const Ptr<WifiRadioEnergyModel> wifiRadioEnergyModel)
{
m_wifiRadioEnergyModel = wifiRadioEnergyModel;
}
double
WifiPhy::GetPowerDbm (uint8_t power) const
{
NS_ASSERT (m_txPowerBaseDbm <= m_txPowerEndDbm);
NS_ASSERT (m_nTxPower > 0);
double dbm;
if (m_nTxPower > 1)
{
dbm = m_txPowerBaseDbm + power * (m_txPowerEndDbm - m_txPowerBaseDbm) / (m_nTxPower - 1);
}
else
{
NS_ASSERT_MSG (m_txPowerBaseDbm == m_txPowerEndDbm, "cannot have TxPowerEnd != TxPowerStart with TxPowerLevels == 1");
dbm = m_txPowerBaseDbm;
}
return dbm;
}
Time
WifiPhy::GetChannelSwitchDelay (void) const
{
return m_channelSwitchDelay;
}
double
WifiPhy::CalculateSnr (WifiTxVector txVector, double ber) const
{
return m_interference.GetErrorRateModel ()->CalculateSnr (txVector, ber);
}
void
WifiPhy::ConfigureDefaultsForStandard (WifiPhyStandard standard)
{
NS_LOG_FUNCTION (this << standard);
switch (standard)
{
case WIFI_PHY_STANDARD_80211a:
SetChannelWidth (20);
SetFrequency (5180);
// Channel number should be aligned by SetFrequency () to 36
NS_ASSERT (GetChannelNumber () == 36);
break;
case WIFI_PHY_STANDARD_80211b:
SetChannelWidth (22);
SetFrequency (2412);
// Channel number should be aligned by SetFrequency () to 1
NS_ASSERT (GetChannelNumber () == 1);
break;
case WIFI_PHY_STANDARD_80211g:
SetChannelWidth (20);
SetFrequency (2412);
// Channel number should be aligned by SetFrequency () to 1
NS_ASSERT (GetChannelNumber () == 1);
break;
case WIFI_PHY_STANDARD_80211_10MHZ:
SetChannelWidth (10);
SetFrequency (5860);
// Channel number should be aligned by SetFrequency () to 172
NS_ASSERT (GetChannelNumber () == 172);
break;
case WIFI_PHY_STANDARD_80211_5MHZ:
SetChannelWidth (5);
SetFrequency (5860);
// Channel number should be aligned by SetFrequency () to 0
NS_ASSERT (GetChannelNumber () == 0);
break;
case WIFI_PHY_STANDARD_holland:
SetChannelWidth (20);
SetFrequency (5180);
// Channel number should be aligned by SetFrequency () to 36
NS_ASSERT (GetChannelNumber () == 36);
break;
case WIFI_PHY_STANDARD_80211n_2_4GHZ:
SetChannelWidth (20);
SetFrequency (2412);
// Channel number should be aligned by SetFrequency () to 1
NS_ASSERT (GetChannelNumber () == 1);
break;
case WIFI_PHY_STANDARD_80211n_5GHZ:
SetChannelWidth (20);
SetFrequency (5180);
// Channel number should be aligned by SetFrequency () to 36
NS_ASSERT (GetChannelNumber () == 36);
break;
case WIFI_PHY_STANDARD_80211ac:
SetChannelWidth (80);
SetFrequency (5210);
// Channel number should be aligned by SetFrequency () to 42
NS_ASSERT (GetChannelNumber () == 42);
break;
case WIFI_PHY_STANDARD_80211ax_2_4GHZ:
SetChannelWidth (20);
SetFrequency (2412);
// Channel number should be aligned by SetFrequency () to 1
NS_ASSERT (GetChannelNumber () == 1);
break;
case WIFI_PHY_STANDARD_80211ax_5GHZ:
SetChannelWidth (80);
SetFrequency (5210);
// Channel number should be aligned by SetFrequency () to 42
NS_ASSERT (GetChannelNumber () == 42);
break;
case WIFI_PHY_STANDARD_UNSPECIFIED:
default:
NS_LOG_WARN ("Configuring unspecified standard; performing no action");
break;
}
}
void
WifiPhy::Configure80211a (void)
{
NS_LOG_FUNCTION (this);
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate6Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate9Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate12Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate18Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate24Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate36Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate48Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate54Mbps ());
}
void
WifiPhy::Configure80211b (void)
{
NS_LOG_FUNCTION (this);
m_deviceRateSet.push_back (WifiPhy::GetDsssRate1Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetDsssRate2Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetDsssRate5_5Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetDsssRate11Mbps ());
}
void
WifiPhy::Configure80211g (void)
{
NS_LOG_FUNCTION (this);
Configure80211b ();
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate6Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate9Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate12Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate18Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate24Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate36Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate48Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetErpOfdmRate54Mbps ());
}
void
WifiPhy::Configure80211_10Mhz (void)
{
NS_LOG_FUNCTION (this);
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate3MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate4_5MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate6MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate9MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate12MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate18MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate24MbpsBW10MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate27MbpsBW10MHz ());
}
void
WifiPhy::Configure80211_5Mhz (void)
{
NS_LOG_FUNCTION (this);
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate1_5MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate2_25MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate3MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate4_5MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate6MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate9MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate12MbpsBW5MHz ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate13_5MbpsBW5MHz ());
}
void
WifiPhy::ConfigureHolland (void)
{
NS_LOG_FUNCTION (this);
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate6Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate12Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate18Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate36Mbps ());
m_deviceRateSet.push_back (WifiPhy::GetOfdmRate54Mbps ());
}
void
WifiPhy::ConfigureHtDeviceMcsSet (void)
{
NS_LOG_FUNCTION (this);
bool htFound = false;
for (std::vector<uint8_t>::size_type i = 0; i < m_bssMembershipSelectorSet.size (); i++)
{
if (m_bssMembershipSelectorSet[i] == HT_PHY)
{
htFound = true;
break;