A Discrete-Event Network Simulator
API
ns3::MinstrelWifiManager Class Reference

Implementation of Minstrel Rate Control AlgorithmMinstrel is a rate control algorithm implemented in MadWifi and Linux. More...

#include "minstrel-wifi-manager.h"

+ Inheritance diagram for ns3::MinstrelWifiManager:
+ Collaboration diagram for ns3::MinstrelWifiManager:

Public Member Functions

 MinstrelWifiManager ()
 
virtual ~MinstrelWifiManager ()
 
int64_t AssignStreams (int64_t stream) override
 Assign a fixed random variable stream number to the random variables used by this model. More...
 
void CheckInit (MinstrelWifiRemoteStation *station)
 Check for initializations. More...
 
uint32_t CountRetries (MinstrelWifiRemoteStation *station)
 Get the number of retries. More...
 
uint16_t FindRate (MinstrelWifiRemoteStation *station)
 Find a rate to use from Minstrel Table. More...
 
WifiTxVector GetDataTxVector (MinstrelWifiRemoteStation *station)
 Get data transmit vector. More...
 
WifiTxVector GetRtsTxVector (MinstrelWifiRemoteStation *station)
 Get RTS transmit vector. More...
 
void InitSampleTable (MinstrelWifiRemoteStation *station)
 Initialize Sample Table. More...
 
void SetupMac (const Ptr< WifiMac > mac) override
 Set up MAC associated with this device since it is the object that knows the full set of timing parameters (e.g. More...
 
void SetupPhy (const Ptr< WifiPhy > phy) override
 Set up PHY associated with this device since it is the object that knows the full set of transmit rates that are supported. More...
 
void UpdatePacketCounters (MinstrelWifiRemoteStation *station)
 Update packet counters. More...
 
void UpdateRate (MinstrelWifiRemoteStation *station)
 Update the rate. More...
 
void UpdateRetry (MinstrelWifiRemoteStation *station)
 Update the number of retries and reset accordingly. More...
 
void UpdateStats (MinstrelWifiRemoteStation *station)
 Update the Minstrel Table. More...
 
- Public Member Functions inherited from ns3::WifiRemoteStationManager
 WifiRemoteStationManager ()
 
virtual ~WifiRemoteStationManager ()
 
void AddAllSupportedMcs (Mac48Address address)
 Invoked in a STA or AP to store all of the MCS supported by a destination which is also supported locally. More...
 
void AddAllSupportedModes (Mac48Address address)
 Invoked in a STA or AP to store all of the modes supported by a destination which is also supported locally. More...
 
void AddBasicMcs (WifiMode mcs)
 Add a given Modulation and Coding Scheme (MCS) index to the set of basic MCS. More...
 
void AddBasicMode (WifiMode mode)
 Invoked in a STA upon association to store the set of rates which belong to the BSSBasicRateSet of the associated AP and which are supported locally. More...
 
void AddStationHeCapabilities (Mac48Address from, HeCapabilities heCapabilities)
 Records HE capabilities of the remote station. More...
 
void AddStationHtCapabilities (Mac48Address from, HtCapabilities htCapabilities)
 Records HT capabilities of the remote station. More...
 
void AddStationVhtCapabilities (Mac48Address from, VhtCapabilities vhtCapabilities)
 Records VHT capabilities of the remote station. More...
 
void AddSupportedErpSlotTime (Mac48Address address, bool isShortSlotTimeSupported)
 Record whether the short ERP slot time is supported by the station. More...
 
void AddSupportedMcs (Mac48Address address, WifiMode mcs)
 Record the MCS index supported by the station. More...
 
void AddSupportedMode (Mac48Address address, WifiMode mode)
 Invoked in a STA or AP to store the set of modes supported by a destination which is also supported locally. More...
 
void AddSupportedPhyPreamble (Mac48Address address, bool isShortPreambleSupported)
 Record whether the short PHY preamble is supported by the station. More...
 
WifiTxVector GetAckTxVector (Mac48Address to, const WifiTxVector &dataTxVector) const
 Return a TXVECTOR for the Ack frame given the destination and the mode of the Data used by the sender. More...
 
WifiMode GetBasicMcs (uint8_t i) const
 Return the MCS at the given list index. More...
 
WifiMode GetBasicMode (uint8_t i) const
 Return a basic mode from the set of basic modes. More...
 
WifiTxVector GetBlockAckTxVector (Mac48Address to, const WifiTxVector &dataTxVector) const
 Return a TXVECTOR for the BlockAck frame given the destination and the mode of the Data used by the sender. More...
 
uint16_t GetChannelWidthSupported (Mac48Address address) const
 Return the channel width supported by the station. More...
 
WifiMode GetControlAnswerMode (WifiMode reqMode) const
 Get control answer mode function. More...
 
WifiTxVector GetCtsToSelfTxVector (void)
 Since CTS-to-self parameters are not dependent on the station, it is implemented in wifi remote station manager. More...
 
WifiTxVector GetCtsTxVector (Mac48Address to, WifiMode rtsTxMode) const
 Return a TXVECTOR for the CTS frame given the destination and the mode of the RTS used by the sender. More...
 
WifiTxVector GetDataTxVector (const WifiMacHeader &header)
 
WifiMode GetDefaultMcs (void) const
 Return the default Modulation and Coding Scheme (MCS) index. More...
 
WifiMode GetDefaultMode (void) const
 Return the default transmission mode. More...
 
uint8_t GetDefaultTxPowerLevel (void) const
 
uint32_t GetFragmentationThreshold (void) const
 Return the fragmentation threshold. More...
 
uint32_t GetFragmentOffset (Ptr< const WifiMacQueueItem > mpdu, uint32_t fragmentNumber)
 
uint32_t GetFragmentSize (Ptr< const WifiMacQueueItem > mpdu, uint32_t fragmentNumber)
 
uint16_t GetGuardInterval (void) const
 Return the supported HE guard interval duration (in nanoseconds). More...
 
bool GetHeSupported (void) const
 Return whether the device has HE capability support enabled. More...
 
bool GetHeSupported (Mac48Address address) const
 Return whether the station supports HE or not. More...
 
bool GetHtSupported (void) const
 Return whether the device has HT capability support enabled. More...
 
bool GetHtSupported (Mac48Address address) const
 Return whether the station supports HT or not. More...
 
WifiRemoteStationInfo GetInfo (Mac48Address address)
 
bool GetLdpcSupported (void) const
 Return whether the device has LDPC support enabled. More...
 
bool GetLdpcSupported (Mac48Address address) const
 Return whether the station supports LDPC or not. More...
 
Ptr< WifiMacGetMac (void) const
 Return the WifiMac. More...
 
uint8_t GetMaxNumberOfTransmitStreams (void) const
 
double GetMostRecentRssi (Mac48Address address) const
 
uint8_t GetNBasicMcs (void) const
 Return the number of basic MCS index. More...
 
uint8_t GetNBasicModes (void) const
 Return the number of basic modes we support. More...
 
uint8_t GetNMcsSupported (Mac48Address address) const
 Return the number of MCS supported by the station. More...
 
uint32_t GetNNonErpBasicModes (void) const
 Return the number of non-ERP basic modes we support. More...
 
WifiMode GetNonErpBasicMode (uint8_t i) const
 Return a basic mode from the set of basic modes that is not an ERP mode. More...
 
WifiMode GetNonUnicastMode (void) const
 Return a mode for non-unicast packets. More...
 
uint8_t GetNumberOfAntennas (void) const
 
uint8_t GetNumberOfSupportedStreams (Mac48Address address) const
 Return the number of spatial streams supported by the station. More...
 
Ptr< WifiPhyGetPhy (void) const
 Return the WifiPhy. More...
 
bool GetQosSupported (Mac48Address address) const
 Return whether the given station is QoS capable. More...
 
WifiTxVector GetRtsTxVector (Mac48Address address)
 
bool GetShortGuardIntervalSupported (void) const
 Return whether the device has SGI support enabled. More...
 
bool GetShortGuardIntervalSupported (Mac48Address address) const
 Return whether the station supports HT/VHT short guard interval. More...
 
bool GetShortPreambleEnabled (void) const
 Return whether the device uses short PHY preambles. More...
 
bool GetShortPreambleSupported (Mac48Address address) const
 Return whether the station supports short PHY preamble or not. More...
 
bool GetShortSlotTimeEnabled (void) const
 Return whether the device uses short slot time. More...
 
bool GetShortSlotTimeSupported (Mac48Address address) const
 Return whether the station supports short ERP slot time or not. More...
 
Ptr< const HeCapabilitiesGetStationHeCapabilities (Mac48Address from)
 Return the HE capabilities sent by the remote station. More...
 
Ptr< const HtCapabilitiesGetStationHtCapabilities (Mac48Address from)
 Return the HT capabilities sent by the remote station. More...
 
Ptr< const VhtCapabilitiesGetStationVhtCapabilities (Mac48Address from)
 Return the VHT capabilities sent by the remote station. More...
 
bool GetUseNonErpProtection (void) const
 Return whether the device supports protection of non-ERP stations. More...
 
bool GetUseNonHtProtection (void) const
 Return whether the device supports protection of non-HT stations. More...
 
bool GetVhtSupported (void) const
 Return whether the device has VHT capability support enabled. More...
 
bool GetVhtSupported (Mac48Address address) const
 Return whether the station supports VHT or not. More...
 
bool IsAssociated (Mac48Address address) const
 Return whether the station associated. More...
 
bool IsBrandNew (Mac48Address address) const
 Return whether the station state is brand new. More...
 
bool IsLastFragment (Ptr< const WifiMacQueueItem > mpdu, uint32_t fragmentNumber)
 
bool IsWaitAssocTxOk (Mac48Address address) const
 Return whether we are waiting for an ACK for the association response we sent. More...
 
bool NeedCtsToSelf (WifiTxVector txVector)
 Return if we need to do CTS-to-self before sending a DATA. More...
 
bool NeedFragmentation (Ptr< const WifiMacQueueItem > mpdu)
 
bool NeedRetransmission (Ptr< const WifiMacQueueItem > mpdu)
 
bool NeedRts (const WifiMacHeader &header, uint32_t size)
 
void RecordDisassociated (Mac48Address address)
 Records that the STA was disassociated. More...
 
void RecordGotAssocTxFailed (Mac48Address address)
 Records that we missed an ACK for the association response we sent. More...
 
void RecordGotAssocTxOk (Mac48Address address)
 Records that we got an ACK for the association response we sent. More...
 
void RecordWaitAssocTxOk (Mac48Address address)
 Records that we are waiting for an ACK for the association response we sent. More...
 
void RemoveAllSupportedMcs (Mac48Address address)
 Invoked in a STA or AP to delete all of the supported MCS by a destination. More...
 
void ReportAmpduTxStatus (Mac48Address address, uint16_t nSuccessfulMpdus, uint16_t nFailedMpdus, double rxSnr, double dataSnr, WifiTxVector dataTxVector)
 Typically called per A-MPDU, either when a Block ACK was successfully received or when a BlockAckTimeout has elapsed. More...
 
void ReportDataFailed (Ptr< const WifiMacQueueItem > mpdu)
 Should be invoked whenever the AckTimeout associated to a transmission attempt expires. More...
 
void ReportDataOk (Ptr< const WifiMacQueueItem > mpdu, double ackSnr, WifiMode ackMode, double dataSnr, WifiTxVector dataTxVector)
 Should be invoked whenever we receive the ACK associated to a data packet we just sent. More...
 
void ReportFinalDataFailed (Ptr< const WifiMacQueueItem > mpdu)
 Should be invoked after calling ReportDataFailed if NeedRetransmission returns false. More...
 
void ReportFinalRtsFailed (const WifiMacHeader &header)
 Should be invoked after calling ReportRtsFailed if NeedRetransmission returns false. More...
 
void ReportRtsFailed (const WifiMacHeader &header)
 Should be invoked whenever the RtsTimeout associated to a transmission attempt expires. More...
 
void ReportRtsOk (const WifiMacHeader &header, double ctsSnr, WifiMode ctsMode, double rtsSnr)
 Should be invoked whenever we receive the CTS associated to an RTS we just sent. More...
 
void ReportRxOk (Mac48Address address, RxSignalInfo rxSignalInfo, WifiTxVector txVector)
 
void Reset (void)
 Reset the station, invoked in a STA upon dis-association or in an AP upon reboot. More...
 
void SetDefaultTxPowerLevel (uint8_t txPower)
 Set the default transmission power level. More...
 
void SetFragmentationThreshold (uint32_t threshold)
 Sets a fragmentation threshold. More...
 
void SetMaxSlrc (uint32_t maxSlrc)
 Sets the maximum STA long retry count (SLRC). More...
 
void SetMaxSsrc (uint32_t maxSsrc)
 Sets the maximum STA short retry count (SSRC). More...
 
void SetQosSupport (Mac48Address from, bool qosSupported)
 Records QoS support of the remote station. More...
 
void SetRtsCtsThreshold (uint32_t threshold)
 Sets the RTS threshold. More...
 
void SetShortPreambleEnabled (bool enable)
 Enable or disable short PHY preambles. More...
 
void SetShortSlotTimeEnabled (bool enable)
 Enable or disable short slot time. More...
 
void SetUseNonErpProtection (bool enable)
 Enable or disable protection for non-ERP stations. More...
 
void SetUseNonHtProtection (bool enable)
 Enable or disable protection for non-HT stations. More...
 
bool UseLdpcForDestination (Mac48Address dest) const
 
- Public Member Functions inherited from ns3::Object
 Object ()
 Constructor. More...
 
virtual ~Object ()
 Destructor. More...
 
void AggregateObject (Ptr< Object > other)
 Aggregate two Objects together. More...
 
void Dispose (void)
 Dispose of this Object. More...
 
AggregateIterator GetAggregateIterator (void) const
 Get an iterator to the Objects aggregated to this one. More...
 
virtual TypeId GetInstanceTypeId (void) const
 Get the most derived TypeId for this Object. More...
 
template<typename T >
Ptr< T > GetObject (void) const
 Get a pointer to the requested aggregated Object. More...
 
template<typename T >
Ptr< T > GetObject (TypeId tid) const
 Get a pointer to the requested aggregated Object by TypeId. More...
 
template<>
Ptr< ObjectGetObject () const
 
template<>
Ptr< ObjectGetObject (TypeId tid) const
 
void Initialize (void)
 Invoke DoInitialize on all Objects aggregated to this one. More...
 
bool IsInitialized (void) const
 Check if the object has been initialized. More...
 
- Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
 SimpleRefCount ()
 Default constructor. More...
 
 SimpleRefCount (const SimpleRefCount &o)
 Copy constructor. More...
 
uint32_t GetReferenceCount (void) const
 Get the reference count of the object. More...
 
SimpleRefCountoperator= (const SimpleRefCount &o)
 Assignment operator. More...
 
void Ref (void) const
 Increment the reference count. More...
 
void Unref (void) const
 Decrement the reference count. More...
 
- Public Member Functions inherited from ns3::ObjectBase
virtual ~ObjectBase ()
 Virtual destructor. More...
 
void GetAttribute (std::string name, AttributeValue &value) const
 Get the value of an attribute, raising fatal errors if unsuccessful. More...
 
bool GetAttributeFailSafe (std::string name, AttributeValue &value) const
 Get the value of an attribute without raising erros. More...
 
void SetAttribute (std::string name, const AttributeValue &value)
 Set a single attribute, raising fatal errors if unsuccessful. More...
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 Set a single attribute without raising errors. More...
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 Connect a TraceSource to a Callback with a context. More...
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 Connect a TraceSource to a Callback without a context. More...
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected with a context. More...
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected without a context. More...
 

Static Public Member Functions

static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::WifiRemoteStationManager
static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::Object
static TypeId GetTypeId (void)
 Register this type. More...
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId (void)
 Get the type ID. More...
 

Private Types

typedef std::map< WifiMode, TimeTxTime
 typedef for a vector of a pair of Time, WifiMode. More...
 

Private Member Functions

void AddCalcTxTime (WifiMode mode, Time t)
 Add transmission time for the given mode to an internal list. More...
 
Time CalculateTimeUnicastPacket (Time dataTransmissionTime, uint32_t shortRetries, uint32_t longRetries)
 Estimate the time to transmit the given packet with the given number of retries. More...
 
WifiRemoteStationDoCreateStation (void) const override
 
WifiTxVector DoGetDataTxVector (WifiRemoteStation *station) override
 
WifiTxVector DoGetRtsTxVector (WifiRemoteStation *station) override
 
void DoInitialize (void) override
 Initialize() implementation. More...
 
bool DoNeedRetransmission (WifiRemoteStation *st, Ptr< const Packet > packet, bool normally) override
 
void DoReportDataFailed (WifiRemoteStation *station) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
void DoReportDataOk (WifiRemoteStation *station, double ackSnr, WifiMode ackMode, double dataSnr, uint16_t dataChannelWidth, uint8_t dataNss) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
void DoReportFinalDataFailed (WifiRemoteStation *station) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
void DoReportFinalRtsFailed (WifiRemoteStation *station) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
void DoReportRtsFailed (WifiRemoteStation *station) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
void DoReportRtsOk (WifiRemoteStation *station, double ctsSnr, WifiMode ctsMode, double rtsSnr) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
void DoReportRxOk (WifiRemoteStation *station, double rxSnr, WifiMode txMode) override
 This method is a pure virtual method that must be implemented by the sub-class. More...
 
Time GetCalcTxTime (WifiMode mode) const
 Estimate the TxTime of a packet with a given mode. More...
 
uint16_t GetNextSample (MinstrelWifiRemoteStation *station)
 Get the next sample from Sample Table. More...
 
void PrintSampleTable (MinstrelWifiRemoteStation *station)
 Print Sample Table. More...
 
void PrintTable (MinstrelWifiRemoteStation *station)
 Print Minstrel Table. More...
 
void RateInit (MinstrelWifiRemoteStation *station)
 Initialize Minstrel Table. More...
 

Private Attributes

TxTime m_calcTxTime
 to hold all the calculated TxTime for all modes More...
 
TracedValue< uint64_t > m_currentRate
 Trace rate changes. More...
 
uint8_t m_ewmaLevel
 exponential weighted moving average More...
 
uint8_t m_lookAroundRate
 the % to try other rates than our current rate More...
 
uint32_t m_pktLen
 packet length used for calculate mode TxTime More...
 
bool m_printSamples
 whether samples table should be printed. More...
 
bool m_printStats
 whether statistics table should be printed. More...
 
uint8_t m_sampleCol
 number of sample columns More...
 
Ptr< UniformRandomVariablem_uniformRandomVariable
 Provides uniform random variables. More...
 
Time m_updateStats
 how frequent do we calculate the stats More...
 

Additional Inherited Members

- Public Types inherited from ns3::WifiRemoteStationManager
typedef void(* PowerChangeTracedCallback) (double oldPower, double newPower, Mac48Address remoteAddress)
 TracedCallback signature for power change events. More...
 
enum  ProtectionMode { RTS_CTS, CTS_TO_SELF }
 ProtectionMode enumeration. More...
 
typedef void(* RateChangeTracedCallback) (DataRate oldRate, DataRate newRate, Mac48Address remoteAddress)
 TracedCallback signature for rate change events. More...
 
typedef std::vector< WifiRemoteStation * > Stations
 A vector of WifiRemoteStations. More...
 
typedef std::vector< WifiRemoteStationState * > StationStates
 A vector of WifiRemoteStationStates. More...
 
- Protected Member Functions inherited from ns3::WifiRemoteStationManager
virtual void DoDispose (void)
 Destructor implementation. More...
 
Mac48Address GetAddress (const WifiRemoteStation *station) const
 Return the address of the station. More...
 
bool GetAggregation (const WifiRemoteStation *station) const
 Return whether the given station supports A-MPDU. More...
 
uint16_t GetChannelWidth (const WifiRemoteStation *station) const
 Return the channel width supported by the station. More...
 
uint16_t GetGuardInterval (const WifiRemoteStation *station) const
 Return the HE guard interval duration supported by the station. More...
 
bool GetHeSupported (const WifiRemoteStation *station) const
 Return whether the given station is HE capable. More...
 
bool GetHtSupported (const WifiRemoteStation *station) const
 Return whether the given station is HT capable. More...
 
WifiMode GetMcsSupported (const WifiRemoteStation *station, uint8_t i) const
 Return the WifiMode supported by the specified station at the specified index. More...
 
uint8_t GetNess (const WifiRemoteStation *station) const
 
uint8_t GetNMcsSupported (const WifiRemoteStation *station) const
 Return the number of MCS supported by the given station. More...
 
uint32_t GetNNonErpSupported (const WifiRemoteStation *station) const
 Return the number of non-ERP modes supported by the given station. More...
 
WifiMode GetNonErpSupported (const WifiRemoteStation *station, uint8_t i) const
 Return whether non-ERP mode associated with the specified station at the specified index. More...
 
uint8_t GetNSupported (const WifiRemoteStation *station) const
 Return the number of modes supported by the given station. More...
 
uint8_t GetNumberOfSupportedStreams (const WifiRemoteStation *station) const
 Return the number of supported streams the station has. More...
 
bool GetQosSupported (const WifiRemoteStation *station) const
 Return whether the given station is QoS capable. More...
 
bool GetShortGuardIntervalSupported (const WifiRemoteStation *station) const
 Return whether the given station supports HT/VHT short guard interval. More...
 
WifiMode GetSupported (const WifiRemoteStation *station, uint8_t i) const
 Return whether mode associated with the specified station at the specified index. More...
 
bool GetVhtSupported (const WifiRemoteStation *station) const
 Return whether the given station is VHT capable. More...
 
- Protected Member Functions inherited from ns3::Object
 Object (const Object &o)
 Copy an Object. More...
 
virtual void NotifyNewAggregate (void)
 Notify all Objects aggregated to this one of a new Object being aggregated. More...
 
- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 Complete construction of ObjectBase; invoked by derived classes. More...
 
virtual void NotifyConstructionCompleted (void)
 Notifier called once the ObjectBase is fully constructed. More...
 

Detailed Description

Implementation of Minstrel Rate Control Algorithm

Minstrel is a rate control algorithm implemented in MadWifi and Linux.


The basic principle is to probe the environment and adapt the rate based on statistics collected on the probability of successful transmission. The algorithm adapts the rate to the highest rate that it considers successful, and spends a fraction of its time doing 'look around' by trying other rates.

Minstrel is appropriate for non-HT configurations; for HT (i.e. 802.11n or higher), users should use MinstrelHtWifiManager instead. Minstrel will error exit if the user tries to configure it with a Wi-Fi MAC that supports 802.11n or higher.

Some notes on this implementation follow. The implementation has been adapted to bring it closer to the Linux implementation. For each rate, a new parameter samplesSkipped is added. This parameter is intended to solve an issue regarding the sampling of low rates when a high rate is working well, which leads to outdated statistics. This change makes throughput a bit lower in simple, stable scenarios, but may help in dynamic scenarios to react faster and more accurately to changes.

Related to the previous, the logic for deciding when to sample random rates is as follows. When a sample rate is deferred to the second MRR chain stage, a new parameter (numSamplesDeferred) is increased. This parameters is used (jointly with sampleCount) to compare current sample count with the lookaround rate.

Also related with sampling, another parameter sampleLimit is added. This parameter limits the number of times a very low or very high probability rate is sampled, avoiding to try a poorly working sample rate too often.

When updating the EWMA probability of a rate for the first time, it does not apply EWMA but instead assigns the entire probability. Since the EWMA probability is initialized to zero, this generates a more accurate EWMA.

Config Paths

ns3::MinstrelWifiManager is accessible through the following paths with Config::Set and Config::Connect:

  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/RemoteStationManager/$ns3::MinstrelWifiManager"

Attributes

  • UpdateStatistics: The interval between updating statistics table
    • Set with class: ns3::TimeValue
    • Underlying type: Time -9.22337e+18ns:+9.22337e+18ns
    • Initial value: +1e+08ns
    • Flags: construct write read
  • LookAroundRate: The percentage to try other rates
    • Set with class: ns3::UintegerValue
    • Underlying type: uint8_t 0:255
    • Initial value: 10
    • Flags: construct write read
  • EWMA: EWMA level
    • Set with class: ns3::UintegerValue
    • Underlying type: uint8_t 0:255
    • Initial value: 75
    • Flags: construct write read
  • SampleColumn: The number of columns used for sampling
    • Set with class: ns3::UintegerValue
    • Underlying type: uint8_t 0:255
    • Initial value: 10
    • Flags: construct write read
  • PacketLength: The packet length used for calculating mode TxTime
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 1200
    • Flags: construct write read
  • PrintStats: Print statistics table
    • Set with class: BooleanValue
    • Underlying type: bool
    • Initial value: false
    • Flags: construct write read
  • PrintSamples: Print samples table
    • Set with class: BooleanValue
    • Underlying type: bool
    • Initial value: false
    • Flags: construct write read

Attributes defined in parent class ns3::WifiRemoteStationManager

  • MaxSsrc: The maximum number of retransmission attempts for any packet with size <= RtsCtsThreshold. This value will not have any effect on some rate control algorithms.
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 7
    • Flags: construct write
  • MaxSlrc: The maximum number of retransmission attempts for any packet with size > RtsCtsThreshold. This value will not have any effect on some rate control algorithms.
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 4
    • Flags: construct write
  • RtsCtsThreshold: If the size of the PSDU is bigger than this value, we use an RTS/CTS handshake before sending the data frame.This value will not have any effect on some rate control algorithms.
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 65535
    • Flags: construct write
  • FragmentationThreshold: If the size of the PSDU is bigger than this value, we fragment it such that the size of the fragments are equal or smaller. This value does not apply when it is carried in an A-MPDU. This value will not have any effect on some rate control algorithms.
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 65535
    • Flags: construct write read
  • NonUnicastMode: Wifi mode used for non-unicast transmissions.
    • Set with class: WifiModeValue
    • Underlying type: WifiMode
    • Initial value: Invalid-WifiMode
    • Flags: construct write read
  • DefaultTxPowerLevel: Default power level to be used for transmissions. This is the power level that is used by all those WifiManagers that do not implement TX power control.
    • Set with class: ns3::UintegerValue
    • Underlying type: uint8_t 0:255
    • Initial value: 0
    • Flags: construct write read
  • ErpProtectionMode: Protection mode used when non-ERP STAs are connected to an ERP AP: Rts-Cts or Cts-To-Self
    • Set with class: ns3::EnumValue
    • Underlying type:
    • Initial value: Cts-To-Self
    • Flags: construct write read
  • HtProtectionMode: Protection mode used when non-HT STAs are connected to a HT AP: Rts-Cts or Cts-To-Self
    • Set with class: ns3::EnumValue
    • Underlying type:
    • Initial value: Cts-To-Self
    • Flags: construct write read

TraceSources

TraceSources defined in parent class ns3::WifiRemoteStationManager

Size of this type is 392 bytes (on a 64-bit architecture).

Definition at line 157 of file minstrel-wifi-manager.h.

Member Typedef Documentation

◆ TxTime

typedef std::map<WifiMode, Time> ns3::MinstrelWifiManager::TxTime
private

typedef for a vector of a pair of Time, WifiMode.

Essentially a map from WifiMode to its corresponding transmission time to transmit a reference packet.

Definition at line 340 of file minstrel-wifi-manager.h.

Constructor & Destructor Documentation

◆ MinstrelWifiManager()

ns3::MinstrelWifiManager::MinstrelWifiManager ( )

Definition at line 99 of file minstrel-wifi-manager.cc.

References m_uniformRandomVariable, and NS_LOG_FUNCTION.

◆ ~MinstrelWifiManager()

ns3::MinstrelWifiManager::~MinstrelWifiManager ( )
virtual

Definition at line 107 of file minstrel-wifi-manager.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ AddCalcTxTime()

void ns3::MinstrelWifiManager::AddCalcTxTime ( WifiMode  mode,
Time  t 
)
private

Add transmission time for the given mode to an internal list.

Parameters
modeWi-Fi mode
ttransmission time

Definition at line 169 of file minstrel-wifi-manager.cc.

References m_calcTxTime, and NS_LOG_FUNCTION.

Referenced by SetupPhy().

+ Here is the caller graph for this function:

◆ AssignStreams()

int64_t ns3::MinstrelWifiManager::AssignStreams ( int64_t  stream)
overridevirtual

Assign a fixed random variable stream number to the random variables used by this model.

Return the number of streams (possibly zero) that have been assigned.

Parameters
streamfirst stream index to use
Returns
the number of stream indices assigned by this model

Reimplemented from ns3::WifiRemoteStationManager.

Definition at line 152 of file minstrel-wifi-manager.cc.

References m_uniformRandomVariable, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().

+ Here is the call graph for this function:

◆ CalculateTimeUnicastPacket()

Time ns3::MinstrelWifiManager::CalculateTimeUnicastPacket ( Time  dataTransmissionTime,
uint32_t  shortRetries,
uint32_t  longRetries 
)
private

Estimate the time to transmit the given packet with the given number of retries.

This function is "roughly" the function "calc_usecs_unicast_packet" in minstrel.c in the madwifi implementation.

The basic idea is that, we try to estimate the "average" time used to transmit the packet for the given number of retries while also accounting for the 802.11 congestion window change. The original code in the madwifi seems to estimate the number of backoff slots as the half of the current CW size.

There are four main parts:

  • wait for DIFS (sense idle channel)
  • Ack timeouts
  • Data transmission
  • backoffs according to CW
Parameters
dataTransmissionTimethe data transmission time
shortRetriesshort retries
longRetrieslong retries
Returns
the unicast packet time

Definition at line 957 of file minstrel-wifi-manager.cc.

References ns3::WifiPhy::GetAckTxTime(), ns3::WifiRemoteStationManager::GetPhy(), ns3::WifiPhy::GetSifs(), ns3::WifiPhy::GetSlot(), min, and NS_LOG_FUNCTION.

Referenced by RateInit().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

◆ CheckInit()

void ns3::MinstrelWifiManager::CheckInit ( MinstrelWifiRemoteStation station)

◆ CountRetries()

uint32_t ns3::MinstrelWifiManager::CountRetries ( MinstrelWifiRemoteStation station)

Get the number of retries.

Parameters
stationthe station object
Returns
the number of retries

Definition at line 410 of file minstrel-wifi-manager.cc.

References ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, and ns3::MinstrelWifiRemoteStation::m_sampleRate.

Referenced by DoNeedRetransmission().

+ Here is the caller graph for this function:

◆ DoCreateStation()

◆ DoGetDataTxVector()

WifiTxVector ns3::MinstrelWifiManager::DoGetDataTxVector ( WifiRemoteStation station)
overrideprivatevirtual
Parameters
stationthe station that we need to communicate
Returns
the TXVECTOR to use to send a packet to the station

Note: This method is called before sending a unicast packet or a fragment of a unicast packet to decide which transmission mode to use.

Implements ns3::WifiRemoteStationManager.

Definition at line 853 of file minstrel-wifi-manager.cc.

References GetDataTxVector(), and NS_LOG_FUNCTION.

+ Here is the call graph for this function:

◆ DoGetRtsTxVector()

WifiTxVector ns3::MinstrelWifiManager::DoGetRtsTxVector ( WifiRemoteStation station)
overrideprivatevirtual
Parameters
stationthe station that we need to communicate
Returns
the transmission mode to use to send an RTS to the station

Note: This method is called before sending an RTS to a station to decide which transmission mode to use for the RTS.

Implements ns3::WifiRemoteStationManager.

Definition at line 861 of file minstrel-wifi-manager.cc.

References GetRtsTxVector(), and NS_LOG_FUNCTION.

+ Here is the call graph for this function:

◆ DoInitialize()

void ns3::MinstrelWifiManager::DoInitialize ( void  )
overrideprivatevirtual

Initialize() implementation.

This method is called only once by Initialize(). If the user calls Initialize() multiple times, DoInitialize() is called only the first time.

Subclasses are expected to override this method and chain up to their parent's implementation once they are done. It is safe to call GetObject() and AggregateObject() from within this method.

Reimplemented from ns3::Object.

Definition at line 134 of file minstrel-wifi-manager.cc.

References ns3::WifiRemoteStationManager::GetHeSupported(), ns3::WifiRemoteStationManager::GetHtSupported(), ns3::WifiRemoteStationManager::GetVhtSupported(), NS_FATAL_ERROR, and NS_LOG_FUNCTION.

+ Here is the call graph for this function:

◆ DoNeedRetransmission()

bool ns3::MinstrelWifiManager::DoNeedRetransmission ( WifiRemoteStation station,
Ptr< const Packet packet,
bool  normally 
)
overrideprivatevirtual
Parameters
stationthe station that we need to communicate
packetthe packet to send
normallyindicates whether the normal 802.11 data retransmission mechanism would request that the data is retransmitted or not.
Returns
true if we want to resend a packet after a failed transmission attempt, false otherwise.

Note: This method is called after any unicast packet transmission (control, management, or data) has been attempted and has failed.

Reimplemented from ns3::WifiRemoteStationManager.

Definition at line 869 of file minstrel-wifi-manager.cc.

References CheckInit(), CountRetries(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_longRetry, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

+ Here is the call graph for this function:

◆ DoReportDataFailed()

void ns3::MinstrelWifiManager::DoReportDataFailed ( WifiRemoteStation station)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that we failed to send DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 742 of file minstrel-wifi-manager.cc.

References CheckInit(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateRate().

+ Here is the call graph for this function:

◆ DoReportDataOk()

void ns3::MinstrelWifiManager::DoReportDataOk ( WifiRemoteStation station,
double  ackSnr,
WifiMode  ackMode,
double  dataSnr,
uint16_t  dataChannelWidth,
uint8_t  dataNss 
)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that we successfully sent RTS
ackSnrthe SNR of the ACK we received
ackModethe WifiMode the receiver used to send the ACK
dataSnrthe SNR of the DATA we sent
dataChannelWidththe channel width (in MHz) of the DATA we sent
dataNssthe number of spatial streams used to send the DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 757 of file minstrel-wifi-manager.cc.

References CheckInit(), FindRate(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_nModes, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, NS_LOG_FUNCTION, UpdatePacketCounters(), UpdateRetry(), and UpdateStats().

+ Here is the call graph for this function:

◆ DoReportFinalDataFailed()

void ns3::MinstrelWifiManager::DoReportFinalDataFailed ( WifiRemoteStation station)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that we failed to send DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 789 of file minstrel-wifi-manager.cc.

References CheckInit(), FindRate(), ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_nModes, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, NS_LOG_FUNCTION, UpdatePacketCounters(), UpdateRetry(), and UpdateStats().

+ Here is the call graph for this function:

◆ DoReportFinalRtsFailed()

void ns3::MinstrelWifiManager::DoReportFinalRtsFailed ( WifiRemoteStation station)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that we failed to send RTS

Implements ns3::WifiRemoteStationManager.

Definition at line 734 of file minstrel-wifi-manager.cc.

References NS_LOG_FUNCTION, and UpdateRetry().

+ Here is the call graph for this function:

◆ DoReportRtsFailed()

void ns3::MinstrelWifiManager::DoReportRtsFailed ( WifiRemoteStation station)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that we failed to send RTS

Implements ns3::WifiRemoteStationManager.

Definition at line 719 of file minstrel-wifi-manager.cc.

References ns3::MinstrelWifiRemoteStation::m_shortRetry, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

◆ DoReportRtsOk()

void ns3::MinstrelWifiManager::DoReportRtsOk ( WifiRemoteStation station,
double  ctsSnr,
WifiMode  ctsMode,
double  rtsSnr 
)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that we successfully sent RTS
ctsSnrthe SNR of the CTS we received
ctsModethe WifiMode the receiver used to send the CTS
rtsSnrthe SNR of the RTS we sent

Implements ns3::WifiRemoteStationManager.

Definition at line 728 of file minstrel-wifi-manager.cc.

References NS_LOG_FUNCTION.

◆ DoReportRxOk()

void ns3::MinstrelWifiManager::DoReportRxOk ( WifiRemoteStation station,
double  rxSnr,
WifiMode  txMode 
)
overrideprivatevirtual

This method is a pure virtual method that must be implemented by the sub-class.

This allows different types of WifiRemoteStationManager to respond differently,

Parameters
stationthe station that sent the DATA to us
rxSnrthe SNR of the DATA we received
txModethe WifiMode the sender used to send the DATA

Implements ns3::WifiRemoteStationManager.

Definition at line 712 of file minstrel-wifi-manager.cc.

References NS_LOG_DEBUG, and NS_LOG_FUNCTION.

◆ FindRate()

◆ GetCalcTxTime()

Time ns3::MinstrelWifiManager::GetCalcTxTime ( WifiMode  mode) const
private

Estimate the TxTime of a packet with a given mode.

Parameters
modeWi-Fi mode
Returns
the transmission time

Definition at line 160 of file minstrel-wifi-manager.cc.

References m_calcTxTime, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by RateInit().

+ Here is the caller graph for this function:

◆ GetDataTxVector()

◆ GetNextSample()

uint16_t ns3::MinstrelWifiManager::GetNextSample ( MinstrelWifiRemoteStation station)
private

Get the next sample from Sample Table.

Parameters
stationthe station object
Returns
the next sample

Definition at line 892 of file minstrel-wifi-manager.cc.

References ns3::MinstrelWifiRemoteStation::m_col, ns3::MinstrelWifiRemoteStation::m_index, ns3::MinstrelWifiRemoteStation::m_nModes, m_sampleCol, ns3::MinstrelWifiRemoteStation::m_sampleTable, NS_ABORT_MSG_IF, and NS_LOG_FUNCTION.

Referenced by FindRate().

+ Here is the caller graph for this function:

◆ GetRtsTxVector()

◆ GetTypeId()

◆ InitSampleTable()

void ns3::MinstrelWifiManager::InitSampleTable ( MinstrelWifiRemoteStation station)

Initialize Sample Table.

Parameters
stationthe station object

The next two lines basically tries to generate a random number between 0 and the number of available rates

Definition at line 983 of file minstrel-wifi-manager.cc.

References ns3::UniformRandomVariable::GetInteger(), ns3::MinstrelWifiRemoteStation::m_col, ns3::MinstrelWifiRemoteStation::m_index, ns3::MinstrelWifiRemoteStation::m_nModes, m_sampleCol, ns3::MinstrelWifiRemoteStation::m_sampleTable, m_uniformRandomVariable, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by CheckInit().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

◆ PrintSampleTable()

void ns3::MinstrelWifiManager::PrintSampleTable ( MinstrelWifiRemoteStation station)
private

Print Sample Table.

Parameters
stationthe station object

Definition at line 1015 of file minstrel-wifi-manager.cc.

References ns3::MinstrelWifiRemoteStation::m_nModes, m_sampleCol, ns3::MinstrelWifiRemoteStation::m_sampleTable, and NS_LOG_DEBUG.

Referenced by UpdateStats().

+ Here is the caller graph for this function:

◆ PrintTable()

◆ RateInit()

void ns3::MinstrelWifiManager::RateInit ( MinstrelWifiRemoteStation station)
private

Initialize Minstrel Table.

Parameters
stationthe station object

Definition at line 914 of file minstrel-wifi-manager.cc.

References CalculateTimeUnicastPacket(), GetCalcTxTime(), ns3::WifiRemoteStationManager::GetSupported(), ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_nModes, ns3::MilliSeconds(), NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::Seconds(), and UpdateStats().

Referenced by CheckInit().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

◆ SetupMac()

void ns3::MinstrelWifiManager::SetupMac ( const Ptr< WifiMac mac)
overridevirtual

Set up MAC associated with this device since it is the object that knows the full set of timing parameters (e.g.

IFS).

Parameters
macthe MAC of this device

Reimplemented from ns3::WifiRemoteStationManager.

Definition at line 127 of file minstrel-wifi-manager.cc.

References third::mac, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::SetupMac().

+ Here is the call graph for this function:

◆ SetupPhy()

void ns3::MinstrelWifiManager::SetupPhy ( const Ptr< WifiPhy phy)
overridevirtual

Set up PHY associated with this device since it is the object that knows the full set of transmit rates that are supported.

Parameters
phythe PHY of this device

Reimplemented from ns3::WifiRemoteStationManager.

Definition at line 113 of file minstrel-wifi-manager.cc.

References AddCalcTxTime(), m_pktLen, NS_LOG_FUNCTION, third::phy, ns3::WifiTxVector::SetMode(), ns3::WifiTxVector::SetPreambleType(), ns3::WifiRemoteStationManager::SetupPhy(), and ns3::WIFI_PREAMBLE_LONG.

+ Here is the call graph for this function:

◆ UpdatePacketCounters()

◆ UpdateRate()

void ns3::MinstrelWifiManager::UpdateRate ( MinstrelWifiRemoteStation station)

Update the rate.

Retry Chain table is implemented here.

Parameters
stationthe station object

Try | LOOKAROUND RATE | NORMAL RATE

1 | Best throughput | Random rate | Best throughput 2 | Random rate | Best throughput | Next best throughput 3 | Best probability | Best probability | Best probability 4 | Lowest base rate | Lowest base rate | Lowest base rate

Note: For clarity, multiple blocks of if's and else's are used After failing max retry times, DoReportFinalDataFailed will be called

Definition at line 236 of file minstrel-wifi-manager.cc.

References ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_sampleDeferred, ns3::MinstrelWifiRemoteStation::m_sampleRate, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, and NS_LOG_FUNCTION.

Referenced by DoReportDataFailed().

+ Here is the caller graph for this function:

◆ UpdateRetry()

void ns3::MinstrelWifiManager::UpdateRetry ( MinstrelWifiRemoteStation station)

Update the number of retries and reset accordingly.

Parameters
stationthe station object

Definition at line 844 of file minstrel-wifi-manager.cc.

References ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_retry, ns3::MinstrelWifiRemoteStation::m_shortRetry, and NS_LOG_FUNCTION.

Referenced by DoReportDataOk(), DoReportFinalDataFailed(), and DoReportFinalRtsFailed().

+ Here is the caller graph for this function:

◆ UpdateStats()

void ns3::MinstrelWifiManager::UpdateStats ( MinstrelWifiRemoteStation station)

Update the Minstrel Table.

Parameters
stationthe station object

calculate the probability of success assume probability scales from 0 to 18000

See: http://wireless.kernel.org/en/developers/Documentation/mac80211/RateControl/minstrel/

Analysis of information showed that the system was sampling too hard at some rates. For those rates that never work (54mb, 500m range) there is no point in retrying 10 sample packets (< 6 ms time). Consequently, for the very low probability rates, we try at most twice when fails and not sample more than 4 times.

Definition at line 533 of file minstrel-wifi-manager.cc.

References ns3::Time::GetMicroSeconds(), ns3::WifiRemoteStationManager::GetSupported(), m_ewmaLevel, ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_nextStatsUpdate, ns3::MinstrelWifiRemoteStation::m_nModes, m_printSamples, m_printStats, ns3::MinstrelWifiRemoteStation::m_txrate, m_updateStats, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, PrintSampleTable(), PrintTable(), and ns3::Seconds().

Referenced by DoReportDataOk(), DoReportFinalDataFailed(), and RateInit().

+ Here is the call graph for this function:
+ Here is the caller graph for this function:

Member Data Documentation

◆ m_calcTxTime

TxTime ns3::MinstrelWifiManager::m_calcTxTime
private

to hold all the calculated TxTime for all modes

Definition at line 342 of file minstrel-wifi-manager.h.

Referenced by AddCalcTxTime(), and GetCalcTxTime().

◆ m_currentRate

TracedValue<uint64_t> ns3::MinstrelWifiManager::m_currentRate
private

Trace rate changes.

Definition at line 354 of file minstrel-wifi-manager.h.

Referenced by GetDataTxVector(), and GetTypeId().

◆ m_ewmaLevel

uint8_t ns3::MinstrelWifiManager::m_ewmaLevel
private

exponential weighted moving average

Definition at line 345 of file minstrel-wifi-manager.h.

Referenced by GetTypeId(), and UpdateStats().

◆ m_lookAroundRate

uint8_t ns3::MinstrelWifiManager::m_lookAroundRate
private

the % to try other rates than our current rate

Definition at line 344 of file minstrel-wifi-manager.h.

Referenced by FindRate(), and GetTypeId().

◆ m_pktLen

uint32_t ns3::MinstrelWifiManager::m_pktLen
private

packet length used for calculate mode TxTime

Definition at line 347 of file minstrel-wifi-manager.h.

Referenced by GetTypeId(), and SetupPhy().

◆ m_printSamples

bool ns3::MinstrelWifiManager::m_printSamples
private

whether samples table should be printed.

Definition at line 349 of file minstrel-wifi-manager.h.

Referenced by GetTypeId(), and UpdateStats().

◆ m_printStats

bool ns3::MinstrelWifiManager::m_printStats
private

whether statistics table should be printed.

Definition at line 348 of file minstrel-wifi-manager.h.

Referenced by GetTypeId(), and UpdateStats().

◆ m_sampleCol

uint8_t ns3::MinstrelWifiManager::m_sampleCol
private

number of sample columns

Definition at line 346 of file minstrel-wifi-manager.h.

Referenced by CheckInit(), GetNextSample(), GetTypeId(), InitSampleTable(), and PrintSampleTable().

◆ m_uniformRandomVariable

Ptr<UniformRandomVariable> ns3::MinstrelWifiManager::m_uniformRandomVariable
private

Provides uniform random variables.

Definition at line 352 of file minstrel-wifi-manager.h.

Referenced by AssignStreams(), InitSampleTable(), and MinstrelWifiManager().

◆ m_updateStats

Time ns3::MinstrelWifiManager::m_updateStats
private

how frequent do we calculate the stats

Definition at line 343 of file minstrel-wifi-manager.h.

Referenced by DoCreateStation(), GetTypeId(), and UpdateStats().


The documentation for this class was generated from the following files: