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A Discrete-Event Network Simulator
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API |
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A Discrete-Event Network Simulator
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API |
Implementation of Minstrel-HT Rate Control Algorithm. More...
#include "minstrel-ht-wifi-manager.h"
Inheritance diagram for ns3::MinstrelHtWifiManager: Collaboration diagram for ns3::MinstrelHtWifiManager:Public Types | |
| typedef void(* | RateChangeTracedCallback) (const uint64_t rate, const Mac48Address remoteAddress) |
| TracedCallback signature for rate change events. More... | |
| 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... | |
| using | Stations = std::unordered_map< Mac48Address, WifiRemoteStation *, WifiAddressHash > |
| A map of WifiRemoteStations with Mac48Address as key. More... | |
| using | StationStates = std::unordered_map< Mac48Address, std::shared_ptr< WifiRemoteStationState >, WifiAddressHash > |
| A map of WifiRemoteStationStates with Mac48Address as key. More... | |
Public Member Functions | |
| MinstrelHtWifiManager () | |
| ~MinstrelHtWifiManager () override | |
| int64_t | AssignStreams (int64_t stream) override |
| Assign a fixed random variable stream number to the random variables used by this model. 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... | |
| Public Member Functions inherited from ns3::WifiRemoteStationManager | |
| WifiRemoteStationManager () | |
| ~WifiRemoteStationManager () override | |
| 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 | AddStationEhtCapabilities (Mac48Address from, EhtCapabilities ehtCapabilities) |
| Records EHT capabilities of the remote station. 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 | AddStationMleCommonInfo (Mac48Address from, const std::shared_ptr< CommonInfoBasicMle > &mleCommonInfo) |
| Records the Common Info field advertised by the given remote station in a Multi-Link Element. 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... | |
| void | AdjustTxVectorForIcf (WifiTxVector &txVector) const |
| Adjust the TXVECTOR for an initial Control frame to ensure that the modulation class is non-HT and the rate is 6 Mbps, 12 Mbps or 24 Mbps. 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... | |
| std::optional< Mac48Address > | GetAffiliatedStaAddress (const Mac48Address &mldAddress) const |
| Get the address of the remote station operating on this link and affiliated with the MLD having the given MAC address, if any. More... | |
| uint16_t | GetAssociationId (Mac48Address remoteAddress) const |
| Get the AID of a remote station. 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 () |
| 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, uint16_t allowedWidth) |
| WifiMode | GetDefaultMcs () const |
| Return the default Modulation and Coding Scheme (MCS) index. More... | |
| WifiMode | GetDefaultMode () const |
| Return the default transmission mode. More... | |
| WifiMode | GetDefaultModeForSta (const WifiRemoteStation *st) const |
| Return the default MCS to use to transmit frames to the given station. More... | |
| uint8_t | GetDefaultTxPowerLevel () const |
| bool | GetDsssSupported (const Mac48Address &address) const |
| Return whether the station supports DSSS or not. More... | |
| bool | GetEhtSupported () const |
| Return whether the device has EHT capability support enabled. More... | |
| bool | GetEhtSupported (Mac48Address address) const |
| Return whether the station supports EHT or not. More... | |
| bool | GetEmlsrEnabled (const Mac48Address &address) const |
| bool | GetEmlsrSupported (const Mac48Address &address) const |
| bool | GetErpOfdmSupported (const Mac48Address &address) const |
| Return whether the station supports ERP OFDM or not. More... | |
| uint32_t | GetFragmentationThreshold () const |
| Return the fragmentation threshold. More... | |
| uint32_t | GetFragmentOffset (Ptr< const WifiMpdu > mpdu, uint32_t fragmentNumber) |
| uint32_t | GetFragmentSize (Ptr< const WifiMpdu > mpdu, uint32_t fragmentNumber) |
| uint16_t | GetGuardInterval () const |
| Return the supported HE guard interval duration (in nanoseconds). More... | |
| bool | GetHeSupported () 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 () 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 () 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< WifiMac > | GetMac () const |
| Return the WifiMac. More... | |
| uint8_t | GetMaxNumberOfTransmitStreams () const |
| std::optional< Mac48Address > | GetMldAddress (const Mac48Address &address) const |
| Get the address of the MLD the given station is affiliated with, if any. More... | |
| std::optional< double > | GetMostRecentRssi (Mac48Address address) const |
| uint8_t | GetNBasicMcs () const |
| Return the number of basic MCS index. More... | |
| uint8_t | GetNBasicModes () 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 () 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 () const |
| Return a mode for non-unicast packets. More... | |
| uint8_t | GetNumberOfAntennas () const |
| uint8_t | GetNumberOfSupportedStreams (Mac48Address address) const |
| Return the number of spatial streams supported by the station. More... | |
| bool | GetOfdmSupported (const Mac48Address &address) const |
| Return whether the station supports OFDM or not. More... | |
| Ptr< WifiPhy > | GetPhy () const |
| Return the WifiPhy. More... | |
| bool | GetQosSupported (Mac48Address address) const |
| Return whether the given station is QoS capable. More... | |
| WifiTxVector | GetRtsTxVector (Mac48Address address, uint16_t allowedWidth) |
| bool | GetShortGuardIntervalSupported () 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 () 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 () 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 EhtCapabilities > | GetStationEhtCapabilities (Mac48Address from) |
| Return the EHT capabilities sent by the remote station. More... | |
| std::optional< std::reference_wrapper< CommonInfoBasicMle::EmlCapabilities > > | GetStationEmlCapabilities (const Mac48Address &from) |
| Ptr< const HeCapabilities > | GetStationHeCapabilities (Mac48Address from) |
| Return the HE capabilities sent by the remote station. More... | |
| Ptr< const HtCapabilities > | GetStationHtCapabilities (Mac48Address from) |
| Return the HT capabilities sent by the remote station. More... | |
| std::optional< std::reference_wrapper< CommonInfoBasicMle::MldCapabilities > > | GetStationMldCapabilities (const Mac48Address &from) |
| Ptr< const VhtCapabilities > | GetStationVhtCapabilities (Mac48Address from) |
| Return the VHT capabilities sent by the remote station. More... | |
| bool | GetUseNonErpProtection () const |
| Return whether the device supports protection of non-ERP stations. More... | |
| bool | GetUseNonHtProtection () const |
| Return whether the device supports protection of non-HT stations. More... | |
| bool | GetVhtSupported () 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 | IsAssocRefused (Mac48Address address) const |
| Return whether we refused an association request from the given station. More... | |
| bool | IsBrandNew (Mac48Address address) const |
| Return whether the station state is brand new. More... | |
| bool | IsInPsMode (const Mac48Address &address) const |
| Return whether the STA is currently in Power Save mode. More... | |
| bool | IsLastFragment (Ptr< const WifiMpdu > 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 WifiMpdu > mpdu) |
| bool | NeedRetransmission (Ptr< const WifiMpdu > mpdu) |
| bool | NeedRts (const WifiMacHeader &header, uint32_t size) |
| void | RecordAssocRefused (Mac48Address address) |
| Records that association request was refused. More... | |
| 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 WifiMpdu > mpdu) |
| Should be invoked whenever the AckTimeout associated to a transmission attempt expires. More... | |
| void | ReportDataOk (Ptr< const WifiMpdu > 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 WifiMpdu > 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 () |
| Reset the station, invoked in a STA upon dis-association or in an AP upon reboot. More... | |
| void | SetAssociationId (Mac48Address remoteAddress, uint16_t aid) |
| Record the AID of a remote station. More... | |
| void | SetDefaultTxPowerLevel (uint8_t txPower) |
| Set the default transmission power level. More... | |
| void | SetEmlsrEnabled (const Mac48Address &from, bool emlsrEnabled) |
| 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 | SetPsMode (const Mac48Address &address, bool isInPsMode) |
| Register whether the STA is in Power Save mode or not. 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... | |
| ~Object () override | |
| Destructor. More... | |
| void | AggregateObject (Ptr< Object > other) |
| Aggregate two Objects together. More... | |
| void | Dispose () |
| Dispose of this Object. More... | |
| AggregateIterator | GetAggregateIterator () const |
| Get an iterator to the Objects aggregated to this one. More... | |
| TypeId | GetInstanceTypeId () const override |
| Get the most derived TypeId for this Object. More... | |
| template<typename T > | |
| Ptr< T > | GetObject () const |
| Get a pointer to the requested aggregated Object. More... | |
| template<> | |
| Ptr< Object > | GetObject () const |
| Specialization of () for objects of type ns3::Object. More... | |
| template<typename T > | |
| Ptr< T > | GetObject (TypeId tid) const |
| Get a pointer to the requested aggregated Object by TypeId. More... | |
| template<> | |
| Ptr< Object > | GetObject (TypeId tid) const |
| Specialization of (TypeId tid) for objects of type ns3::Object. More... | |
| void | Initialize () |
| Invoke DoInitialize on all Objects aggregated to this one. More... | |
| bool | IsInitialized () 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[[maybe_unused]]) | |
| Copy constructor. More... | |
| uint32_t | GetReferenceCount () const |
| Get the reference count of the object. More... | |
| SimpleRefCount & | operator= (const SimpleRefCount &o[[maybe_unused]]) |
| Assignment operator. More... | |
| void | Ref () const |
| Increment the reference count. More... | |
| void | Unref () 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 errors. 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 () |
| Get the type ID. More... | |
| Static Public Member Functions inherited from ns3::WifiRemoteStationManager | |
| static TypeId | GetTypeId () |
| Get the type ID. More... | |
| Static Public Member Functions inherited from ns3::Object | |
| static TypeId | GetTypeId () |
| Register this type. More... | |
| Static Public Member Functions inherited from ns3::ObjectBase | |
| static TypeId | GetTypeId () |
| Get the type ID. More... | |
Private Member Functions | |
| void | AddFirstMpduTxTime (uint8_t groupId, WifiMode mode, Time t) |
| Save a TxTime to the vector of groups. More... | |
| void | AddMpduTxTime (uint8_t groupId, WifiMode mode, Time t) |
| Save a TxTime to the vector of groups. More... | |
| double | CalculateEwmsd (double oldEwmsd, double currentProb, double ewmaProb, double weight) |
| Perform EWMSD (Exponentially Weighted Moving Standard Deviation) calculation. More... | |
| Time | CalculateMpduTxDuration (Ptr< WifiPhy > phy, uint8_t streams, uint16_t gi, uint16_t chWidth, WifiMode mode, MpduType mpduType) |
| Estimates the TxTime of a frame with a given mode and group (stream, guard interval and channel width). More... | |
| void | CalculateRetransmits (MinstrelHtWifiRemoteStation *station, uint16_t index) |
| Calculate the number of retransmissions to set for the index rate. More... | |
| void | CalculateRetransmits (MinstrelHtWifiRemoteStation *station, uint8_t groupId, uint8_t rateId) |
| Calculate the number of retransmissions to set for the (groupId, rateId) rate. More... | |
| double | CalculateThroughput (MinstrelHtWifiRemoteStation *station, uint8_t groupId, uint8_t rateId, double ewmaProb) |
| Return the average throughput of the MCS defined by groupId and rateId. 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... | |
| void | CheckInit (MinstrelHtWifiRemoteStation *station) |
| Check for initializations. More... | |
| uint32_t | CountRetries (MinstrelHtWifiRemoteStation *station) |
| Count retries. More... | |
| WifiRemoteStation * | DoCreateStation () const override |
| WifiTxVector | DoGetDataTxVector (WifiRemoteStation *station, uint16_t allowedWidth) override |
| WifiTxVector | DoGetRtsTxVector (WifiRemoteStation *station) override |
| void | DoInitialize () override |
| Initialize() implementation. More... | |
| bool | DoNeedRetransmission (WifiRemoteStation *st, Ptr< const Packet > packet, bool normally) override |
| void | DoReportAmpduTxStatus (WifiRemoteStation *station, uint16_t nSuccessfulMpdus, uint16_t nFailedMpdus, double rxSnr, double dataSnr, uint16_t dataChannelWidth, uint8_t dataNss) override |
| Typically called per A-MPDU, either when a Block ACK was successfully received or when a BlockAckTimeout has elapsed. More... | |
| 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... | |
| uint16_t | FindRate (MinstrelHtWifiRemoteStation *station) |
| Find a rate to use from Minstrel Table. More... | |
| Time | GetFirstMpduTxTime (uint8_t groupId, WifiMode mode) const |
| Obtain the TxTime saved in the group information. More... | |
| uint8_t | GetGroupId (uint16_t index) |
| Return the groupId from the global index. More... | |
| WifiModeList | GetHeDeviceMcsList () const |
| Returns a list of only the HE MCS supported by the device. More... | |
| uint8_t | GetHeGroupId (uint8_t txstreams, uint16_t gi, uint16_t chWidth) |
| Returns the groupId of an HE MCS with the given number of streams, GI and channel width used. More... | |
| WifiModeList | GetHtDeviceMcsList () const |
| Returns a list of only the HT MCS supported by the device. More... | |
| uint8_t | GetHtGroupId (uint8_t txstreams, uint16_t gi, uint16_t chWidth) |
| Returns the groupId of an HT MCS with the given number of streams, GI and channel width used. More... | |
| uint16_t | GetIndex (uint8_t groupId, uint8_t rateId) |
| Returns the global index corresponding to the groupId and rateId. More... | |
| uint16_t | GetLowestIndex (MinstrelHtWifiRemoteStation *station) |
| Returns the lowest global index of the rates supported by the station. More... | |
| uint16_t | GetLowestIndex (MinstrelHtWifiRemoteStation *station, uint8_t groupId) |
| Returns the lowest global index of the rates supported by in the group. More... | |
| Time | GetMpduTxTime (uint8_t groupId, WifiMode mode) const |
| Obtain the TxTime saved in the group information. More... | |
| uint16_t | GetNextSample (MinstrelHtWifiRemoteStation *station) |
| Getting the next sample from Sample Table. More... | |
| uint8_t | GetRateId (uint16_t index) |
| Return the rateId inside a group, from the global index. More... | |
| WifiModeList | GetVhtDeviceMcsList () const |
| Returns a list of only the VHT MCS supported by the device. More... | |
| uint8_t | GetVhtGroupId (uint8_t txstreams, uint16_t gi, uint16_t chWidth) |
| Returns the groupId of a VHT MCS with the given number of streams, GI and channel width used. More... | |
| void | InitSampleTable (MinstrelHtWifiRemoteStation *station) |
| Initialize Sample Table. More... | |
| bool | IsValidMcs (Ptr< WifiPhy > phy, uint8_t streams, uint16_t chWidth, WifiMode mode) |
| Check the validity of a combination of number of streams, chWidth and mode. More... | |
| void | PrintSampleTable (MinstrelHtWifiRemoteStation *station) |
| Printing Sample Table. More... | |
| void | PrintTable (MinstrelHtWifiRemoteStation *station) |
| Printing Minstrel Table. More... | |
| void | RateInit (MinstrelHtWifiRemoteStation *station) |
| Initialize Minstrel Table. More... | |
| void | SetBestProbabilityRate (MinstrelHtWifiRemoteStation *station, uint16_t index) |
| Set index rate as maxProbRate if it is better than current value. More... | |
| void | SetBestStationThRates (MinstrelHtWifiRemoteStation *station, uint16_t index) |
| Set index rate as maxTpRate or maxTp2Rate if is better than current values. More... | |
| void | SetNextSample (MinstrelHtWifiRemoteStation *station) |
| Set the next sample from Sample Table. More... | |
| void | StatsDump (MinstrelHtWifiRemoteStation *station, uint8_t groupId, std::ofstream &of) |
| Print group statistics. More... | |
| void | UpdatePacketCounters (MinstrelHtWifiRemoteStation *station, uint16_t nSuccessfulMpdus, uint16_t nFailedMpdus) |
| Update the number of sample count variables. More... | |
| void | UpdateRate (MinstrelHtWifiRemoteStation *station) |
| Update rate. More... | |
| uint16_t | UpdateRateAfterAllowedWidth (uint16_t txRate, uint16_t allowedWidth) |
| Given the index of the current TX rate, check whether the channel width is not greater than the given allowed width. More... | |
| void | UpdateRetry (MinstrelHtWifiRemoteStation *station) |
| Update the number of retries and reset accordingly. More... | |
| void | UpdateStats (MinstrelHtWifiRemoteStation *station) |
| Update the Minstrel Table. More... | |
Private Attributes | |
| TracedValue< uint64_t > | m_currentRate |
| Trace rate changes. More... | |
| uint8_t | m_ewmaLevel |
| Exponential weighted moving average level (or coefficient). More... | |
| uint32_t | m_frameLength |
| Frame length used to calculate modes TxTime in bytes. More... | |
| Ptr< MinstrelWifiManager > | m_legacyManager |
| Pointer to an instance of MinstrelWifiManager. More... | |
| Time | m_legacyUpdateStats |
| How frequent do we calculate the stats for legacy MinstrelWifiManager. More... | |
| uint8_t | m_lookAroundRate |
| The % to try other rates than our current rate. More... | |
| MinstrelMcsGroups | m_minstrelGroups |
| Global array for groups information. More... | |
| uint8_t | m_nSampleCol |
| Number of sample columns. More... | |
| uint8_t | m_numGroups |
| Number of groups Minstrel should consider. More... | |
| uint8_t | m_numRates |
| Number of rates per group Minstrel should consider. More... | |
| bool | m_printStats |
| If statistics table should be printed. More... | |
| Ptr< UniformRandomVariable > | m_uniformRandomVariable |
| Provides uniform random variables. More... | |
| Time | m_updateStats |
| How frequent do we calculate the stats. More... | |
| bool | m_useLatestAmendmentOnly |
| Flag if only the latest supported amendment by both peers should be used. More... | |
Additional Inherited Members | |
| Protected Member Functions inherited from ns3::WifiRemoteStationManager | |
| void | DoDispose () override |
| 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... | |
| bool | GetEhtSupported (const WifiRemoteStation *station) const |
| Return whether the given station is EHT capable. More... | |
| bool | GetEmlsrEnabled (const WifiRemoteStation *station) const |
| bool | GetEmlsrSupported (const WifiRemoteStation *station) const |
| 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 () |
| 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 () |
| Notifier called once the ObjectBase is fully constructed. More... | |
| Related Functions inherited from ns3::ObjectBase | |
| static TypeId | GetObjectIid () |
| Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More... | |
Implementation of Minstrel-HT Rate Control Algorithm.
Minstrel-HT is a rate adaptation mechanism for the 802.11n/ac/ax standards based on Minstrel, and is based on the approach of probing the channel to dynamically learn about working rates that can be supported. Minstrel-HT is designed for high-latency devices that implement a Multiple Rate Retry (MRR) chain. This kind of device does not give feedback for every frame retransmission, but only when a frame was correctly transmitted (an Ack is received) or a frame transmission completely fails (all retransmission attempts fail). The MRR chain is used to advise the hardware about which rate to use when retransmitting a frame.
Minstrel-HT adapts the MCS, channel width, number of streams, and short guard interval (enabled or disabled). For keeping statistics, it arranges MCS in groups, where each group is defined by the tuple (streams, GI, channel width). There is a vector of all groups supported by the PHY layer of the transmitter; for each group, the capabilities and the estimated duration of its rates are maintained.
Each station maintains a table of groups statistics. For each group, a flag indicates if the group is supported by the station. Different stations communicating with an AP can have different capabilities.
Stats are updated per A-MPDU when receiving AmpduTxStatus. If the number of successful or failed MPDUs is greater than zero (a BlockAck was received), the rates are also updated. If the number of successful and failed MPDUs is zero (BlockAck timeout), then the rate selected is based on the MRR chain.
On each update interval, it sets the maxThrRate, the secondmaxThrRate and the maxProbRate for the MRR chain. These rates are only used when an entire A-MPDU fails and is retried.
Differently from legacy minstrel, sampling is not done based on "lookaround ratio", but assuring all rates are sampled at least once each interval. However, it samples less often the low rates and high probability of error rates.
When this rate control is configured but non-legacy modes are not supported, Minstrel-HT uses legacy Minstrel (minstrel-wifi-manager) for rate control.
Definition at line 236 of file minstrel-ht-wifi-manager.h.
| typedef void(* ns3::MinstrelHtWifiManager::RateChangeTracedCallback) (const uint64_t rate, const Mac48Address remoteAddress) |
TracedCallback signature for rate change events.
| [in] | rate | The new rate. |
| [in] | address | The remote station MAC address. |
Definition at line 257 of file minstrel-ht-wifi-manager.h.
| ns3::MinstrelHtWifiManager::MinstrelHtWifiManager | ( | ) |
Create the legacy Minstrel manager in case HT is not supported by the device or non-HT stations want to associate.
Definition at line 132 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, m_uniformRandomVariable, and NS_LOG_FUNCTION.
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override |
Definition at line 146 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, m_numGroups, and NS_LOG_FUNCTION.
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private |
Save a TxTime to the vector of groups.
| groupId | the group ID |
| mode | the wifi mode |
| t | the transmit time |
Definition at line 457 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, and NS_LOG_FUNCTION.
Referenced by DoInitialize().
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| groupId | the group ID |
| mode | the wifi mode |
| t | the transmit time |
Definition at line 473 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, and NS_LOG_FUNCTION.
Referenced by DoInitialize().
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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.
| stream | first stream index to use |
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 157 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, m_uniformRandomVariable, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().
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Perform EWMSD (Exponentially Weighted Moving Standard Deviation) calculation.
| oldEwmsd | the old EWMSD |
| currentProb | the current probability |
| ewmaProb | the EWMA probability |
| weight | the weight |
Definition at line 1928 of file minstrel-ht-wifi-manager.cc.
Referenced by UpdateStats().
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Estimates the TxTime of a frame with a given mode and group (stream, guard interval and channel width).
| phy | pointer to the wifi PHY |
| streams | the number of streams |
| gi | guard interval duration (nanoseconds) |
| chWidth | the channel width (MHz) |
| mode | the wifi mode |
| mpduType | the type of the MPDU |
Definition at line 427 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::CalculatePhyPreambleAndHeaderDuration(), ns3::WifiPhy::GetPayloadDuration(), m_frameLength, NS_LOG_FUNCTION, third::phy, ns3::WifiTxVector::SetChannelWidth(), ns3::WifiTxVector::SetGuardInterval(), ns3::WifiTxVector::SetMode(), ns3::WifiTxVector::SetNess(), ns3::WifiTxVector::SetNss(), ns3::WifiTxVector::SetPreambleType(), ns3::WifiTxVector::SetStbc(), and ns3::WIFI_PREAMBLE_HT_MF.
Referenced by DoInitialize().
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Calculate the number of retransmissions to set for the index rate.
| station | the Minstrel-HT wifi remote station |
| index | the index |
Definition at line 1858 of file minstrel-ht-wifi-manager.cc.
References GetGroupId(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, and NS_LOG_FUNCTION.
Referenced by RateInit(), and UpdateStats().
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Calculate the number of retransmissions to set for the (groupId, rateId) rate.
| station | the Minstrel-HT wifi remote station |
| groupId | the group ID |
| rateId | the rate ID |
Definition at line 1870 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::GetBlockAckTxTime(), GetFirstMpduTxTime(), ns3::WifiRemoteStationManager::GetMcsSupported(), GetMpduTxTime(), ns3::WifiRemoteStationManager::GetPhy(), ns3::WifiPhy::GetSifs(), ns3::WifiPhy::GetSlot(), ns3::MinstrelHtWifiRemoteStation::m_avgAmpduLen, ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MilliSeconds(), ns3::Min(), and NS_LOG_FUNCTION.
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Return the average throughput of the MCS defined by groupId and rateId.
| station | the Minstrel-HT wifi remote station |
| groupId | the group ID |
| rateId | the rate ID |
| ewmaProb | the EWMA probability |
Calculating throughput. Do not account throughput if probability of success is below 10% (as done in minstrel_ht linux implementation).
For the throughput calculation, limit the probability value to 90% to account for collision related packet error rate fluctuation.
Definition at line 1538 of file minstrel-ht-wifi-manager.cc.
References ns3::Time::GetSeconds(), and ns3::MinstrelHtWifiRemoteStation::m_groupsTable.
Referenced by StatsDump(), and UpdateStats().
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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:
| dataTransmissionTime | the data transmission time |
| shortRetries | the short retries |
| longRetries | the long retries |
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private |
Check for initializations.
| station | the Minstrel-HT wifi remote station |
Check if the station supports HT. Assume that if the device do not supports HT then the station will not support HT either. We save from using another check and variable.
Definition at line 522 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetHtSupported(), ns3::WifiRemoteStationManager::GetNMcsSupported(), InitSampleTable(), m_ewmaLevel, m_frameLength, ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelHtWifiRemoteStation::m_isHt, m_legacyManager, m_legacyUpdateStats, m_lookAroundRate, ns3::MinstrelWifiRemoteStation::m_minstrelTable, ns3::MinstrelWifiRemoteStation::m_nModes, m_nSampleCol, m_numRates, m_printStats, ns3::MinstrelWifiRemoteStation::m_sampleTable, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_INFO, and RateInit().
Referenced by DoGetDataTxVector(), DoGetRtsTxVector(), DoNeedRetransmission(), DoReportAmpduTxStatus(), DoReportDataFailed(), DoReportDataOk(), DoReportFinalDataFailed(), DoReportFinalRtsFailed(), DoReportRtsFailed(), and UpdateRate().
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Count retries.
| station | the Minstrel-HT wifi remote station |
Definition at line 1219 of file minstrel-ht-wifi-manager.cc.
References GetGroupId(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, and ns3::MinstrelWifiRemoteStation::m_maxTpRate2.
Referenced by DoNeedRetransmission(), DoReportAmpduTxStatus(), and DoReportDataFailed().
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overrideprivatevirtual |
Implements ns3::WifiRemoteStationManager.
Definition at line 480 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetHtSupported(), m_updateStats, ns3::Simulator::Now(), and NS_LOG_FUNCTION.
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| station | the station that we need to communicate |
| allowedWidth | the allowed width in MHz 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 1023 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), ns3::McsGroup::chWidth, ns3::WifiRemoteStationManager::GetAggregation(), ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiMode::GetDataRate(), ns3::WifiRemoteStationManager::GetDefaultTxPowerLevel(), GetGroupId(), ns3::WifiRemoteStationManager::GetGuardInterval(), ns3::WifiRemoteStationManager::GetMcsSupported(), ns3::WifiTxVector::GetMode(), ns3::WifiMode::GetModulationClass(), ns3::WifiRemoteStationManager::GetNess(), ns3::WifiRemoteStationManager::GetNumberOfAntennas(), ns3::WifiRemoteStationManager::GetNumberOfSupportedStreams(), ns3::WifiRemoteStationManager::GetPhy(), ns3::GetPreambleForTransmission(), GetRateId(), ns3::WifiRemoteStationManager::GetShortGuardIntervalSupported(), ns3::WifiRemoteStationManager::GetShortPreambleEnabled(), ns3::WifiPhy::GetTxBandwidth(), ns3::McsGroup::gi, m_currentRate, m_legacyManager, m_minstrelGroups, NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::McsGroup::streams, ns3::McsGroup::type, UpdateRateAfterAllowedWidth(), ns3::WIFI_MINSTREL_GROUP_HE, ns3::WIFI_MINSTREL_GROUP_HT, and ns3::WIFI_MINSTREL_GROUP_VHT.
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overrideprivatevirtual |
| station | the station that we need to communicate |
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 1096 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), ns3::WifiRemoteStationManager::GetAggregation(), ns3::WifiRemoteStationManager::GetBasicMode(), ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiMode::GetDataRate(), ns3::WifiRemoteStationManager::GetDefaultTxPowerLevel(), GetGroupId(), ns3::WifiRemoteStationManager::GetMcsSupported(), ns3::WifiMode::GetModulationClass(), ns3::WifiRemoteStationManager::GetNBasicModes(), ns3::WifiMode::GetNonHtReferenceRate(), ns3::WifiRemoteStationManager::GetPhy(), ns3::GetPreambleForTransmission(), GetRateId(), ns3::WifiRemoteStationManager::GetShortPreambleEnabled(), m_legacyManager, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, and third::phy.
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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.
Here we initialize m_minstrelGroups with all the possible groups. If a group is not supported by the device, then it is marked as not supported. Then, after all initializations are finished, we check actual support for each receiving station.
Initialize the groups array. The HT groups come first, then the VHT ones, and finally the HE ones. Minstrel maintains different types of indexes:
Is SGI supported by the transmitter?
Is channel width supported by the transmitter?
Are streams supported by the transmitter?
Is SGI supported by the transmitter?
Is channel width supported by the transmitter?
Are streams supported by the transmitter?
Is GI supported by the transmitter?
Is channel width supported by the transmitter?
Are streams supported by the transmitter?
Reimplemented from ns3::Object.
Definition at line 185 of file minstrel-ht-wifi-manager.cc.
References AddFirstMpduTxTime(), AddMpduTxTime(), CalculateMpduTxDuration(), ns3::FIRST_MPDU_IN_AGGREGATE, ns3::WifiRemoteStationManager::GetChannelWidth(), ns3::WifiRemoteStationManager::GetGuardInterval(), GetHeDeviceMcsList(), GetHeGroupId(), ns3::WifiRemoteStationManager::GetHeSupported(), GetHtDeviceMcsList(), GetHtGroupId(), ns3::WifiRemoteStationManager::GetHtSupported(), ns3::WifiRemoteStationManager::GetPhy(), ns3::WifiRemoteStationManager::GetShortGuardIntervalSupported(), GetVhtDeviceMcsList(), GetVhtGroupId(), ns3::WifiRemoteStationManager::GetVhtSupported(), IsValidMcs(), m_minstrelGroups, m_numGroups, m_numRates, ns3::MAX_HE_GROUP_RATES, ns3::MAX_HE_STREAM_GROUPS, ns3::MAX_HE_SUPPORTED_STREAMS, ns3::MAX_HE_WIDTH, ns3::MAX_HT_GROUP_RATES, ns3::MAX_HT_STREAM_GROUPS, ns3::MAX_HT_SUPPORTED_STREAMS, ns3::MAX_HT_WIDTH, ns3::MAX_VHT_GROUP_RATES, ns3::MAX_VHT_STREAM_GROUPS, ns3::MAX_VHT_SUPPORTED_STREAMS, ns3::MAX_VHT_WIDTH, ns3::MIDDLE_MPDU_IN_AGGREGATE, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::WIFI_MINSTREL_GROUP_HE, ns3::WIFI_MINSTREL_GROUP_HT, and ns3::WIFI_MINSTREL_GROUP_VHT.
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| station | the station that we need to communicate |
| packet | the packet to send |
| normally | indicates whether the normal 802.11 data retransmission mechanism would request that the data is retransmitted or not. |
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 1179 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), CountRetries(), m_legacyManager, NS_LOG_DEBUG, and NS_LOG_FUNCTION.
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Typically called per A-MPDU, either when a Block ACK was successfully received or when a BlockAckTimeout has elapsed.
This method is a virtual method that must be implemented by the sub-class intended to handle A-MPDUs. This allows different types of WifiRemoteStationManager to respond differently.
| station | the station that sent the DATA to us |
| nSuccessfulMpdus | number of successfully transmitted MPDUs. A value of 0 means that the Block ACK was missed. |
| nFailedMpdus | number of unsuccessfuly transmitted MPDUs. |
| rxSnr | received SNR of the block ack frame itself |
| dataSnr | data SNR reported by remote station |
| dataChannelWidth | the channel width (in MHz) of the A-MPDU we sent |
| dataNss | the number of spatial streams used to send the A-MPDU |
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 763 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), CountRetries(), FindRate(), GetGroupId(), GetRateId(), ns3::Simulator::Now(), NS_ASSERT_MSG, NS_LOG_DEBUG, NS_LOG_FUNCTION, UpdatePacketCounters(), UpdateRate(), UpdateRetry(), and UpdateStats().
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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,
| station | the station that we failed to send DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 609 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), CountRetries(), GetGroupId(), GetRateId(), m_legacyManager, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateRate().
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This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
| station | the station that we successfully sent RTS |
| ackSnr | the SNR of the ACK we received |
| ackMode | the WifiMode the receiver used to send the ACK |
| dataSnr | the SNR of the DATA we sent |
| dataChannelWidth | the channel width (in MHz) of the DATA we sent |
| dataNss | the number of spatial streams used to send the DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 639 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), FindRate(), GetGroupId(), GetRateId(), m_legacyManager, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, UpdatePacketCounters(), UpdateRetry(), and UpdateStats().
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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,
| station | the station that we failed to send DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 716 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), FindRate(), m_legacyManager, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, UpdatePacketCounters(), UpdateRetry(), and UpdateStats().
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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,
| station | the station that we failed to send RTS |
Implements ns3::WifiRemoteStationManager.
Definition at line 595 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateRetry().
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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,
| station | the station that we failed to send RTS |
Implements ns3::WifiRemoteStationManager.
Definition at line 572 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.
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This method is a pure virtual method that must be implemented by the sub-class.
This allows different types of WifiRemoteStationManager to respond differently,
| station | the station that we successfully sent RTS |
| ctsSnr | the SNR of the CTS we received |
| ctsMode | the WifiMode the receiver used to send the CTS |
| rtsSnr | the SNR of the RTS we sent |
Implements ns3::WifiRemoteStationManager.
Definition at line 586 of file minstrel-ht-wifi-manager.cc.
References NS_LOG_FUNCTION.
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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,
| station | the station that sent the DATA to us |
| rxSnr | the SNR of the DATA we received |
| txMode | the WifiMode the sender used to send the DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 564 of file minstrel-ht-wifi-manager.cc.
References NS_LOG_DEBUG, and NS_LOG_FUNCTION.
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private |
Find a rate to use from Minstrel Table.
| station | the Minstrel-HT wifi remote station |
Now go through the table and find an index rate.
Sampling might add some overhead to the frame. Hence, don't use sampling for the currently used rates.
Also do not sample if the probability is already higher than 95% to avoid wasting airtime.
Make sure that lower rates get sampled only occasionally, if the link is working perfectly.
Set flag that we are currently sampling.
set the rate that we're currently sampling
Set flag that we are currently sampling.
set the rate that we're currently sampling
Continue using the best rate.
Definition at line 1287 of file minstrel-ht-wifi-manager.cc.
References ns3::MinstrelHtRateInfo::ewmaProb, GetGroupId(), GetNextSample(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, m_minstrelGroups, ns3::MinstrelHtWifiRemoteStation::m_numSamplesSlow, ns3::MinstrelWifiRemoteStation::m_samplePacketsCount, ns3::MinstrelWifiRemoteStation::m_sampleRate, ns3::MinstrelHtWifiRemoteStation::m_sampleTries, ns3::MinstrelHtWifiRemoteStation::m_sampleWait, ns3::MinstrelWifiRemoteStation::m_totalPacketsCount, ns3::MinstrelWifiRemoteStation::m_txrate, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::MinstrelHtRateInfo::numSamplesSkipped, and ns3::MinstrelHtRateInfo::perfectTxTime.
Referenced by DoReportAmpduTxStatus(), DoReportDataOk(), DoReportFinalDataFailed(), and RateInit().
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Obtain the TxTime saved in the group information.
| groupId | the group ID |
| mode | the wifi mode |
Definition at line 448 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, NS_ASSERT, and NS_LOG_FUNCTION.
Referenced by CalculateRetransmits(), RateInit(), and StatsDump().
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Return the groupId from the global index.
| index | the index |
Definition at line 2106 of file minstrel-ht-wifi-manager.cc.
References m_numRates, and NS_LOG_FUNCTION.
Referenced by CalculateRetransmits(), CountRetries(), DoGetDataTxVector(), DoGetRtsTxVector(), DoReportAmpduTxStatus(), DoReportDataFailed(), DoReportDataOk(), FindRate(), SetBestProbabilityRate(), SetBestStationThRates(), UpdateRate(), and UpdateRateAfterAllowedWidth().
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Returns a list of only the HE MCS supported by the device.
Definition at line 2230 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::GetMcsList(), ns3::WifiRemoteStationManager::GetPhy(), and ns3::WIFI_MOD_CLASS_HE.
Referenced by DoInitialize().
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Returns the groupId of an HE MCS with the given number of streams, GI and channel width used.
| txstreams | the number of streams |
| gi | guard interval duration (nanoseconds) |
| chWidth | the channel width (MHz) |
add all HT groups
This check is needed since we do not support VHT in 2.4 GHz band
add all VHT groups
Definition at line 2151 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetVhtSupported(), ns3::MAX_HE_SUPPORTED_STREAMS, ns3::MAX_HT_STREAM_GROUPS, ns3::MAX_HT_SUPPORTED_STREAMS, ns3::MAX_VHT_STREAM_GROUPS, ns3::MAX_VHT_SUPPORTED_STREAMS, and NS_LOG_FUNCTION.
Referenced by DoInitialize(), and UpdateRateAfterAllowedWidth().
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Returns a list of only the HT MCS supported by the device.
Definition at line 2246 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::GetMcsList(), ns3::WifiRemoteStationManager::GetPhy(), and ns3::WIFI_MOD_CLASS_HT.
Referenced by DoInitialize().
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Returns the groupId of an HT MCS with the given number of streams, GI and channel width used.
| txstreams | the number of streams |
| gi | guard interval duration (nanoseconds) |
| chWidth | the channel width (MHz) |
Definition at line 2113 of file minstrel-ht-wifi-manager.cc.
References ns3::MAX_HT_SUPPORTED_STREAMS, and NS_LOG_FUNCTION.
Referenced by DoInitialize(), and UpdateRateAfterAllowedWidth().
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Returns the global index corresponding to the groupId and rateId.
For managing rates from different groups, a global index for all rates in all groups is used. The group order is fixed by BW -> SGI -> streams.
| groupId | the group ID |
| rateId | the rate ID |
Definition at line 2088 of file minstrel-ht-wifi-manager.cc.
References m_numRates, and NS_LOG_FUNCTION.
Referenced by GetLowestIndex(), GetNextSample(), StatsDump(), UpdateRateAfterAllowedWidth(), and UpdateStats().
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Returns the lowest global index of the rates supported by the station.
| station | the Minstrel-HT wifi remote station |
Definition at line 2195 of file minstrel-ht-wifi-manager.cc.
References GetIndex(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, NS_ASSERT, and NS_LOG_FUNCTION.
Referenced by UpdateStats().
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Returns the lowest global index of the rates supported by in the group.
| station | the Minstrel-HT wifi remote station |
| groupId | the group ID |
Definition at line 2215 of file minstrel-ht-wifi-manager.cc.
References GetIndex(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, NS_ASSERT, and NS_LOG_FUNCTION.
Here is the call graph for this function:Obtain the TxTime saved in the group information.
| groupId | the group ID |
| mode | the wifi mode |
Definition at line 464 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, NS_ASSERT, and NS_LOG_FUNCTION.
Referenced by CalculateRetransmits().
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Getting the next sample from Sample Table.
| station | the wifi remote station |
Definition at line 1242 of file minstrel-ht-wifi-manager.cc.
References GetIndex(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MinstrelHtWifiRemoteStation::m_sampleGroup, ns3::MinstrelWifiRemoteStation::m_sampleTable, NS_LOG_DEBUG, NS_LOG_FUNCTION, and SetNextSample().
Referenced by FindRate().
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Return the rateId inside a group, from the global index.
| index | the index |
Definition at line 2097 of file minstrel-ht-wifi-manager.cc.
References m_numRates, and NS_LOG_FUNCTION.
Referenced by CalculateRetransmits(), CountRetries(), DoGetDataTxVector(), DoGetRtsTxVector(), DoReportAmpduTxStatus(), DoReportDataFailed(), DoReportDataOk(), FindRate(), SetBestProbabilityRate(), SetBestStationThRates(), UpdateRate(), and UpdateRateAfterAllowedWidth().
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Get the type ID.
Definition at line 78 of file minstrel-ht-wifi-manager.cc.
References m_currentRate, m_ewmaLevel, m_frameLength, m_legacyUpdateStats, m_lookAroundRate, m_nSampleCol, m_printStats, m_updateStats, m_useLatestAmendmentOnly, ns3::MakeBooleanAccessor(), ns3::MakeBooleanChecker(), ns3::MakeTimeAccessor(), ns3::MakeTimeChecker(), ns3::MakeTraceSourceAccessor(), ns3::MakeUintegerAccessor(), ns3::MilliSeconds(), and ns3::TypeId::SetParent().
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Returns a list of only the VHT MCS supported by the device.
Definition at line 2238 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::GetMcsList(), ns3::WifiRemoteStationManager::GetPhy(), and ns3::WIFI_MOD_CLASS_VHT.
Referenced by DoInitialize().
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Returns the groupId of a VHT MCS with the given number of streams, GI and channel width used.
| txstreams | the number of streams |
| gi | guard interval duration (nanoseconds) |
| chWidth | the channel width (MHz) |
add all HT groups
Definition at line 2123 of file minstrel-ht-wifi-manager.cc.
References ns3::MAX_HT_STREAM_GROUPS, ns3::MAX_HT_SUPPORTED_STREAMS, ns3::MAX_VHT_SUPPORTED_STREAMS, and NS_LOG_FUNCTION.
Referenced by DoInitialize(), and UpdateRateAfterAllowedWidth().
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Initialize Sample Table.
| station | the Minstrel-HT wifi remote station |
The next two lines basically tries to generate a random number between 0 and the number of available rates
Definition at line 1948 of file minstrel-ht-wifi-manager.cc.
References ns3::UniformRandomVariable::GetInteger(), ns3::MinstrelWifiRemoteStation::m_col, ns3::MinstrelWifiRemoteStation::m_index, m_nSampleCol, m_numRates, ns3::MinstrelWifiRemoteStation::m_sampleTable, m_uniformRandomVariable, and NS_LOG_FUNCTION.
Referenced by CheckInit().
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Check the validity of a combination of number of streams, chWidth and mode.
| phy | pointer to the wifi PHY |
| streams | the number of streams |
| chWidth | the channel width (MHz) |
| mode | the wifi mode |
Definition at line 413 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiTxVector::IsValid(), NS_LOG_FUNCTION, third::phy, ns3::WifiTxVector::SetChannelWidth(), ns3::WifiTxVector::SetMode(), and ns3::WifiTxVector::SetNss().
Referenced by DoInitialize(), and RateInit().
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Printing Sample Table.
| station | the Minstrel-HT wifi remote station |
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Printing Minstrel Table.
| station | the Minstrel-HT wifi remote station |
Definition at line 1979 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationState::m_address, ns3::MinstrelHtWifiRemoteStation::m_avgAmpduLen, m_numGroups, ns3::MinstrelWifiRemoteStation::m_samplePacketsCount, ns3::WifiRemoteStation::m_state, ns3::MinstrelHtWifiRemoteStation::m_statsFile, ns3::MinstrelWifiRemoteStation::m_totalPacketsCount, ns3::Max(), and StatsDump().
Referenced by UpdateStats().
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Initialize Minstrel Table.
| station | the Minstrel-HT wifi remote station |
Initialize groups supported by the receiver.
Create the rate list for the group.
Use the McsValue as the index in the rate table. This way, MCSs not supported are not initialized.
If it is a HE MCS only add to a HE group.
Check validity of the HE MCS
If it is a VHT MCS only add to a VHT group.
Check validity of the VHT MCS
If it is a HT MCS only add to a HT group.
Check if the HT MCS corresponds to groups number of streams.
Mapping between rateId and operationalMcsSet
make sure at least one group is supported, otherwise we end up with an infinite loop in SetNextSample
Select the initial sample index.
Calculate the initial high throughput rates.
Select the rate to use.
Definition at line 1701 of file minstrel-ht-wifi-manager.cc.
References CalculateRetransmits(), FindRate(), ns3::WifiRemoteStationManager::GetChannelWidth(), GetFirstMpduTxTime(), ns3::WifiRemoteStationManager::GetGuardInterval(), ns3::WifiRemoteStationManager::GetHeSupported(), ns3::WifiRemoteStationManager::GetMcsSupported(), ns3::WifiMode::GetMcsValue(), ns3::WifiMode::GetModulationClass(), ns3::WifiRemoteStationManager::GetNumberOfSupportedStreams(), ns3::WifiRemoteStationManager::GetPhy(), ns3::WifiRemoteStationManager::GetShortGuardIntervalSupported(), ns3::WifiRemoteStationManager::GetVhtSupported(), IsValidMcs(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, m_minstrelGroups, ns3::MinstrelWifiRemoteStation::m_nModes, m_numGroups, m_numRates, ns3::MinstrelWifiRemoteStation::m_txrate, m_useLatestAmendmentOnly, ns3::MAX_HT_GROUP_RATES, NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, SetNextSample(), check-style-clang-format::type, UpdateStats(), ns3::WIFI_MINSTREL_GROUP_HE, ns3::WIFI_MINSTREL_GROUP_HT, ns3::WIFI_MINSTREL_GROUP_VHT, ns3::WIFI_MOD_CLASS_HE, ns3::WIFI_MOD_CLASS_HT, and ns3::WIFI_MOD_CLASS_VHT.
Referenced by CheckInit().
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Set index rate as maxProbRate if it is better than current value.
| station | the Minstrel-HT wifi remote station |
| index | the index |
Definition at line 1571 of file minstrel-ht-wifi-manager.cc.
References ns3::MinstrelHtRateInfo::ewmaProb, GetGroupId(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::GroupInfo::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxProbRate, and ns3::GroupInfo::m_ratesTable.
Referenced by UpdateStats().
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Set index rate as maxTpRate or maxTp2Rate if is better than current values.
| station | the Minstrel-HT wifi remote station |
| index | the index |
Definition at line 1636 of file minstrel-ht-wifi-manager.cc.
References GetGroupId(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::GroupInfo::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::GroupInfo::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, and ns3::GroupInfo::m_ratesTable.
Referenced by UpdateStats().
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Set the next sample from Sample Table.
| station | the wifi remote station |
Definition at line 1256 of file minstrel-ht-wifi-manager.cc.
References ns3::MinstrelHtWifiRemoteStation::m_groupsTable, m_nSampleCol, m_numGroups, m_numRates, ns3::MinstrelHtWifiRemoteStation::m_sampleGroup, ns3::MinstrelWifiRemoteStation::m_sampleTable, NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by GetNextSample(), and RateInit().
Here is the caller graph for this function:Set up MAC associated with this device since it is the object that knows the full set of timing parameters (e.g.
IFS).
| mac | the MAC of this device |
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 177 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, third::mac, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::SetupMac().
Here is the call graph for this function:Set up PHY associated with this device since it is the object that knows the full set of transmit rates that are supported.
| phy | the PHY of this device |
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 168 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, NS_LOG_FUNCTION, third::phy, and ns3::WifiRemoteStationManager::SetupPhy().
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Print group statistics.
| station | the Minstrel-HT wifi remote station |
| groupId | the group ID |
| of | the output file stream |
Definition at line 2008 of file minstrel-ht-wifi-manager.cc.
References CalculateThroughput(), ns3::McsGroup::chWidth, GetFirstMpduTxTime(), GetIndex(), ns3::WifiRemoteStationManager::GetMcsSupported(), ns3::Time::GetMicroSeconds(), ns3::McsGroup::gi, ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, m_minstrelGroups, m_numRates, ns3::McsGroup::streams, ns3::McsGroup::type, and ns3::WIFI_MINSTREL_GROUP_HT.
Referenced by PrintTable().
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Update the number of sample count variables.
| station | the wifi remote station |
| nSuccessfulMpdus | the number of successfully received MPDUs |
| nFailedMpdus | the number of failed MPDUs |
Definition at line 939 of file minstrel-ht-wifi-manager.cc.
References ns3::MinstrelHtWifiRemoteStation::m_avgAmpduLen, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelHtWifiRemoteStation::m_sampleCount, ns3::MinstrelWifiRemoteStation::m_samplePacketsCount, ns3::MinstrelHtWifiRemoteStation::m_sampleTries, ns3::MinstrelHtWifiRemoteStation::m_sampleWait, ns3::MinstrelWifiRemoteStation::m_totalPacketsCount, and NS_LOG_FUNCTION.
Referenced by DoReportAmpduTxStatus(), DoReportDataOk(), and DoReportFinalDataFailed().
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Update rate.
| station | the Minstrel-HT wifi remote station |
Retry Chain table is implemented here.
FIXME Currently, NS3 does not retransmit an entire A-MPDU when BACK is missing but retransmits each MPDU until MPDUs lifetime expires (or a BACK is received). Then, there is no way to control A-MPDU retries (no call to NeedDataRetransmission). So, it is possible that the A-MPDU keeps retrying after longRetry reaches its limit.
1 | Random rate | Best throughput 2 | Next best throughput | Next best throughput 3 | Best probability | Best probability
Note: For clarity, multiple blocks of if's and else's are used Following implementation in Linux, in MinstrelHT lowest base rate is not used. Explanation can be found here: http://marc.info/?l=linux-wireless&m=144602778611966&w=2
Get the IDs for all rates.
For normal rate, we're not currently sampling random rates.
Use best throughput rate.
< There are still a few retries.
Use second best throughput rate.
Use best probability rate.
We're currently sampling random rates.
Sample rate is used only once Use the best rate.
Use the best probability rate.
Definition at line 823 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), GetGroupId(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MinstrelWifiRemoteStation::m_initialized, ns3::MinstrelWifiRemoteStation::m_isSampling, ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_txrate, NS_FATAL_ERROR, NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by DoReportAmpduTxStatus(), and DoReportDataFailed().
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Given the index of the current TX rate, check whether the channel width is not greater than the given allowed width.
If so, the index of the current TX rate is returned. Otherwise, try halving the channel width and check if the MCS group with the same number of streams and same GI is supported. If a supported MCS group is found, return the index of the TX rate within such a group with the same MCS as the given TX rate. If no supported MCS group is found, the simulation aborts.
| txRate | the index of the current TX rate |
| allowedWidth | the allowed width in MHz |
Definition at line 965 of file minstrel-ht-wifi-manager.cc.
References ns3::McsGroup::chWidth, GetGroupId(), GetHeGroupId(), GetHtGroupId(), ns3::WifiRemoteStationManager::GetHtSupported(), GetIndex(), GetRateId(), GetVhtGroupId(), ns3::McsGroup::gi, ns3::McsGroup::isSupported, m_minstrelGroups, NS_ABORT_MSG, NS_ABORT_MSG_IF, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::McsGroup::streams, ns3::McsGroup::type, ns3::WIFI_MINSTREL_GROUP_HE, ns3::WIFI_MINSTREL_GROUP_HT, and ns3::WIFI_MINSTREL_GROUP_VHT.
Referenced by DoGetDataTxVector().
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Update the number of retries and reset accordingly.
| station | the wifi remote station |
Definition at line 931 of file minstrel-ht-wifi-manager.cc.
References ns3::MinstrelWifiRemoteStation::m_longRetry, ns3::MinstrelWifiRemoteStation::m_shortRetry, and NS_LOG_FUNCTION.
Referenced by DoReportAmpduTxStatus(), DoReportDataOk(), DoReportFinalDataFailed(), and DoReportFinalRtsFailed().
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Update the Minstrel Table.
| station | the Minstrel-HT wifi remote station |
Update throughput and EWMA for each rate inside each group.
If we've attempted something.
Calculate the probability of success. Assume probability scales from 0 to 100.
Bookkeeping.
EWMA probability
Bookkeeping.
Definition at line 1404 of file minstrel-ht-wifi-manager.cc.
References CalculateEwmsd(), CalculateRetransmits(), CalculateThroughput(), GetIndex(), GetLowestIndex(), ns3::WifiRemoteStationManager::GetMcsSupported(), ns3::MinstrelHtWifiRemoteStation::m_ampduLen, ns3::MinstrelHtWifiRemoteStation::m_ampduPacketCount, ns3::MinstrelHtWifiRemoteStation::m_avgAmpduLen, m_ewmaLevel, ns3::MinstrelHtWifiRemoteStation::m_groupsTable, ns3::MinstrelWifiRemoteStation::m_maxProbRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate, ns3::MinstrelWifiRemoteStation::m_maxTpRate2, ns3::MinstrelWifiRemoteStation::m_nextStatsUpdate, m_numGroups, m_numRates, ns3::MinstrelHtWifiRemoteStation::m_numSamplesSlow, m_printStats, ns3::MinstrelHtWifiRemoteStation::m_sampleCount, m_updateStats, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, PrintTable(), SetBestProbabilityRate(), and SetBestStationThRates().
Referenced by DoReportAmpduTxStatus(), DoReportDataOk(), DoReportFinalDataFailed(), and RateInit().
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Trace rate changes.
Definition at line 677 of file minstrel-ht-wifi-manager.h.
Referenced by DoGetDataTxVector(), and GetTypeId().
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Exponential weighted moving average level (or coefficient).
Definition at line 661 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), GetTypeId(), and UpdateStats().
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Frame length used to calculate modes TxTime in bytes.
Definition at line 663 of file minstrel-ht-wifi-manager.h.
Referenced by CalculateMpduTxDuration(), CheckInit(), and GetTypeId().
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Pointer to an instance of MinstrelWifiManager.
Used when 802.11n/ac/ax not supported.
Definition at line 672 of file minstrel-ht-wifi-manager.h.
Referenced by MinstrelHtWifiManager(), AssignStreams(), CheckInit(), DoGetDataTxVector(), DoGetRtsTxVector(), DoNeedRetransmission(), DoReportDataFailed(), DoReportDataOk(), DoReportFinalDataFailed(), SetupMac(), and SetupPhy().
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How frequent do we calculate the stats for legacy MinstrelWifiManager.
Definition at line 658 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), and GetTypeId().
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The % to try other rates than our current rate.
Definition at line 660 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), and GetTypeId().
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Global array for groups information.
Definition at line 670 of file minstrel-ht-wifi-manager.h.
Referenced by ~MinstrelHtWifiManager(), AddFirstMpduTxTime(), AddMpduTxTime(), DoGetDataTxVector(), DoInitialize(), FindRate(), GetFirstMpduTxTime(), GetMpduTxTime(), RateInit(), StatsDump(), and UpdateRateAfterAllowedWidth().
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Number of sample columns.
Definition at line 662 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), GetTypeId(), InitSampleTable(), and SetNextSample().
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Number of groups Minstrel should consider.
Definition at line 664 of file minstrel-ht-wifi-manager.h.
Referenced by ~MinstrelHtWifiManager(), DoInitialize(), PrintTable(), RateInit(), SetNextSample(), and UpdateStats().
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Number of rates per group Minstrel should consider.
Definition at line 665 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), DoInitialize(), GetGroupId(), GetIndex(), GetRateId(), InitSampleTable(), RateInit(), SetNextSample(), StatsDump(), and UpdateStats().
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If statistics table should be printed.
Definition at line 668 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), GetTypeId(), and UpdateStats().
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Provides uniform random variables.
Definition at line 675 of file minstrel-ht-wifi-manager.h.
Referenced by MinstrelHtWifiManager(), AssignStreams(), and InitSampleTable().
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How frequent do we calculate the stats.
Definition at line 657 of file minstrel-ht-wifi-manager.h.
Referenced by DoCreateStation(), GetTypeId(), and UpdateStats().
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Flag if only the latest supported amendment by both peers should be used.
Definition at line 666 of file minstrel-ht-wifi-manager.h.
Referenced by GetTypeId(), and RateInit().
1.9.1 
