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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:Classes | |
| struct | StandardInfo |
| A struct to contain information of a standard. More... | |
Public Types | |
| typedef void(* | RateChangeTracedCallback) (const uint64_t rate, const Mac48Address remoteAddress) |
| TracedCallback signature for rate change events. | |
| Public Types inherited from ns3::WifiRemoteStationManager | |
| typedef void(* | PowerChangeTracedCallback) (double oldPower, double newPower, Mac48Address remoteAddress) |
| TracedCallback signature for power change events. | |
| 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. | |
| using | Stations = std::unordered_map<Mac48Address, WifiRemoteStation*, WifiAddressHash> |
| A map of WifiRemoteStations with Mac48Address as key. | |
| using | StationStates |
| A map of WifiRemoteStationStates with Mac48Address as key. | |
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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| void | AddBasicMcs (WifiMode mcs) |
| Add a given Modulation and Coding Scheme (MCS) index to the set of basic MCS. | |
| 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. | |
| void | AddStationEhtCapabilities (Mac48Address from, const EhtCapabilities &ehtCapabilities) |
| Records EHT capabilities of the remote station. | |
| void | AddStationExtendedCapabilities (Mac48Address from, const ExtendedCapabilities &extendedCapabilities) |
| Records extended capabilities of the remote station. | |
| void | AddStationHe6GhzCapabilities (const Mac48Address &from, const He6GhzBandCapabilities &he6GhzCapabilities) |
| Records HE 6 GHz Band Capabilities of a remote station. | |
| void | AddStationHeCapabilities (Mac48Address from, const HeCapabilities &heCapabilities) |
| Records HE capabilities of the remote station. | |
| void | AddStationHtCapabilities (Mac48Address from, const HtCapabilities &htCapabilities) |
| Records HT capabilities of the remote station. | |
| 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. | |
| void | AddStationVhtCapabilities (Mac48Address from, const VhtCapabilities &vhtCapabilities) |
| Records VHT capabilities of the remote station. | |
| void | AddSupportedErpSlotTime (Mac48Address address, bool isShortSlotTimeSupported) |
| Record whether the short ERP slot time is supported by the station. | |
| void | AddSupportedMcs (Mac48Address address, WifiMode mcs) |
| Record the MCS index supported by the station. | |
| 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. | |
| void | AddSupportedPhyPreamble (Mac48Address address, bool isShortPreambleSupported) |
| Record whether the short PHY preamble is supported by the station. | |
| 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. | |
| 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. | |
| 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. | |
| uint16_t | GetAssociationId (Mac48Address remoteAddress) const |
| Get the AID of a remote station. | |
| WifiMode | GetBasicMcs (uint8_t i) const |
| Return the MCS at the given list index. | |
| WifiMode | GetBasicMode (uint8_t i) const |
| Return a basic mode from the set of basic modes. | |
| 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. | |
| MHz_u | GetChannelWidthSupported (Mac48Address address) const |
| Return the channel width supported by the station. | |
| WifiMode | GetControlAnswerMode (WifiMode reqMode) const |
| Get control answer mode function. | |
| WifiTxVector | GetCtsToSelfTxVector () |
| Since CTS-to-self parameters are not dependent on the station, it is implemented in wifi remote station manager. | |
| 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. | |
| WifiTxVector | GetDataTxVector (const WifiMacHeader &header, MHz_u allowedWidth) |
| WifiMode | GetDefaultMcs () const |
| Return the default Modulation and Coding Scheme (MCS) index. | |
| WifiMode | GetDefaultMode () const |
| Return the default transmission mode. | |
| WifiMode | GetDefaultModeForSta (const WifiRemoteStation *st) const |
| Return the default MCS to use to transmit frames to the given station. | |
| uint8_t | GetDefaultTxPowerLevel () const |
| bool | GetDsssSupported (const Mac48Address &address) const |
| Return whether the station supports DSSS or not. | |
| bool | GetEhtSupported () const |
| Return whether the device has EHT capability support enabled. | |
| bool | GetEhtSupported (Mac48Address address) const |
| Return whether the station supports EHT or not. | |
| 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. | |
| uint32_t | GetFragmentationThreshold () const |
| Return the fragmentation threshold. | |
| uint32_t | GetFragmentOffset (Ptr< const WifiMpdu > mpdu, uint32_t fragmentNumber) |
| uint32_t | GetFragmentSize (Ptr< const WifiMpdu > mpdu, uint32_t fragmentNumber) |
| Time | GetGuardInterval () const |
| Return the shortest supported HE guard interval duration. | |
| bool | GetHeSupported () const |
| Return whether the device has HE capability support enabled. | |
| bool | GetHeSupported (Mac48Address address) const |
| Return whether the station supports HE or not. | |
| bool | GetHtSupported () const |
| Return whether the device has HT capability support enabled on the link this manager is associated with. | |
| bool | GetHtSupported (Mac48Address address) const |
| Return whether the station supports HT or not. | |
| WifiRemoteStationInfo | GetInfo (Mac48Address address) |
| bool | GetLdpcSupported () const |
| Return whether the device has LDPC support enabled. | |
| bool | GetLdpcSupported (Mac48Address address) const |
| Return whether the station supports LDPC or not. | |
| Ptr< WifiMac > | GetMac () const |
| Return the WifiMac. | |
| 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. | |
| std::optional< dBm_u > | GetMostRecentRssi (Mac48Address address) const |
| std::list< Ptr< WifiMpdu > > | GetMpdusToDropOnTxFailure (Ptr< WifiPsdu > psdu) |
| Increment the retry count for all the MPDUs (if needed) in the given PSDU and find the MPDUs to drop based on the frame retry count. | |
| uint8_t | GetNBasicMcs () const |
| Return the number of basic MCS index. | |
| uint8_t | GetNBasicModes () const |
| Return the number of basic modes we support. | |
| uint8_t | GetNMcsSupported (Mac48Address address) const |
| Return the number of MCS supported by the station. | |
| uint32_t | GetNNonErpBasicModes () const |
| Return the number of non-ERP basic modes we support. | |
| WifiMode | GetNonErpBasicMode (uint8_t i) const |
| Return a basic mode from the set of basic modes that is not an ERP mode. | |
| WifiMode | GetNonUnicastMode () const |
| Return a mode for non-unicast packets. | |
| uint8_t | GetNumberOfAntennas () const |
| uint8_t | GetNumberOfSupportedStreams (Mac48Address address) const |
| Return the number of spatial streams supported by the station. | |
| bool | GetOfdmSupported (const Mac48Address &address) const |
| Return whether the station supports OFDM or not. | |
| Ptr< WifiPhy > | GetPhy () const |
| Return the WifiPhy. | |
| bool | GetQosSupported (Mac48Address address) const |
| Return whether the given station is QoS capable. | |
| WifiTxVector | GetRtsTxVector (Mac48Address address, MHz_u allowedWidth) |
| bool | GetShortGuardIntervalSupported () const |
| Return whether the device has SGI support enabled. | |
| bool | GetShortGuardIntervalSupported (Mac48Address address) const |
| Return whether the station supports HT/VHT short guard interval. | |
| bool | GetShortPreambleEnabled () const |
| Return whether the device uses short PHY preambles. | |
| bool | GetShortPreambleSupported (Mac48Address address) const |
| Return whether the station supports short PHY preamble or not. | |
| bool | GetShortSlotTimeEnabled () const |
| Return whether the device uses short slot time. | |
| bool | GetShortSlotTimeSupported (Mac48Address address) const |
| Return whether the station supports short ERP slot time or not. | |
| Ptr< const EhtCapabilities > | GetStationEhtCapabilities (Mac48Address from) |
| Return the EHT capabilities sent by the remote station. | |
| std::optional< std::reference_wrapper< CommonInfoBasicMle::EmlCapabilities > > | GetStationEmlCapabilities (const Mac48Address &from) |
| Ptr< const ExtendedCapabilities > | GetStationExtendedCapabilities (const Mac48Address &from) |
| Return the extended capabilities sent by the remote station. | |
| Ptr< const He6GhzBandCapabilities > | GetStationHe6GhzCapabilities (const Mac48Address &from) const |
| Return the HE 6 GHz Band Capabilities sent by a remote station. | |
| Ptr< const HeCapabilities > | GetStationHeCapabilities (Mac48Address from) |
| Return the HE capabilities sent by the remote station. | |
| Ptr< const HtCapabilities > | GetStationHtCapabilities (Mac48Address from) |
| Return the HT capabilities sent by the remote station. | |
| 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. | |
| bool | GetUseNonErpProtection () const |
| Return whether the device supports protection of non-ERP stations. | |
| bool | GetUseNonHtProtection () const |
| Return whether the device supports protection of non-HT stations. | |
| bool | GetVhtSupported () const |
| Return whether the device has VHT capability support enabled on the link this manager is associated with. | |
| bool | GetVhtSupported (Mac48Address address) const |
| Return whether the station supports VHT or not. | |
| bool | IsAssociated (Mac48Address address) const |
| Return whether the station associated. | |
| bool | IsAssocRefused (Mac48Address address) const |
| Return whether we refused an association request from the given station. | |
| bool | IsBrandNew (Mac48Address address) const |
| Return whether the station state is brand new. | |
| bool | IsInPsMode (const Mac48Address &address) const |
| Return whether the STA is currently in Power Save mode. | |
| 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. | |
| bool | NeedCtsToSelf (const WifiTxVector &txVector) |
| Return if we need to do CTS-to-self before sending a DATA. | |
| bool | NeedFragmentation (Ptr< const WifiMpdu > mpdu) |
| bool | NeedRts (const WifiMacHeader &header, const WifiTxParameters &txParams) |
| void | RecordAssocRefused (Mac48Address address) |
| Records that association request was refused. | |
| void | RecordDisassociated (Mac48Address address) |
| Records that the STA was disassociated. | |
| void | RecordGotAssocTxFailed (Mac48Address address) |
| Records that we missed an ACK for the association response we sent. | |
| void | RecordGotAssocTxOk (Mac48Address address) |
| Records that we got an ACK for the association response we sent. | |
| void | RecordWaitAssocTxOk (Mac48Address address) |
| Records that we are waiting for an ACK for the association response we sent. | |
| void | RemoveAllSupportedMcs (Mac48Address address) |
| Invoked in a STA or AP to delete all of the supported MCS by a destination. | |
| 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. | |
| void | ReportDataFailed (Ptr< const WifiMpdu > mpdu) |
| Should be invoked whenever the AckTimeout associated to a transmission attempt expires. | |
| 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. | |
| void | ReportFinalDataFailed (Ptr< const WifiMpdu > mpdu) |
| Should be invoked after calling ReportDataFailed if frames are dropped. | |
| void | ReportFinalRtsFailed (const WifiMacHeader &header) |
| Should be invoked after calling ReportRtsFailed if frames are dropped. | |
| void | ReportRtsFailed (const WifiMacHeader &header) |
| Should be invoked whenever the RtsTimeout associated to a transmission attempt expires. | |
| 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. | |
| void | ReportRxOk (Mac48Address address, RxSignalInfo rxSignalInfo, const WifiTxVector &txVector) |
| void | Reset () |
| Reset the station, invoked in a STA upon dis-association or in an AP upon reboot. | |
| void | SetAssociationId (Mac48Address remoteAddress, uint16_t aid) |
| Record the AID of a remote station. | |
| void | SetDefaultTxPowerLevel (uint8_t txPower) |
| Set the default transmission power level. | |
| void | SetEmlsrEnabled (const Mac48Address &from, bool emlsrEnabled) |
| void | SetFragmentationThreshold (uint32_t threshold) |
| Sets a fragmentation threshold. | |
| void | SetLinkId (uint8_t linkId) |
| Set the ID of the link this Remote Station Manager is associated with. | |
| void | SetMaxSlrc (uint32_t maxSlrc) |
| Sets the maximum STA long retry count (SLRC). | |
| void | SetMaxSsrc (uint32_t maxSsrc) |
| Sets the maximum STA short retry count (SSRC). | |
| void | SetPsMode (const Mac48Address &address, bool isInPsMode) |
| Register whether the STA is in Power Save mode or not. | |
| void | SetQosSupport (Mac48Address from, bool qosSupported) |
| Records QoS support of the remote station. | |
| void | SetRtsCtsThreshold (uint32_t threshold) |
| Sets the RTS threshold. | |
| void | SetShortPreambleEnabled (bool enable) |
| Enable or disable short PHY preambles. | |
| void | SetShortSlotTimeEnabled (bool enable) |
| Enable or disable short slot time. | |
| void | SetUseNonErpProtection (bool enable) |
| Enable or disable protection for non-ERP stations. | |
| void | SetUseNonHtProtection (bool enable) |
| Enable or disable protection for non-HT stations. | |
| bool | UseLdpcForDestination (Mac48Address dest) const |
| Public Member Functions inherited from ns3::Object | |
| Object () | |
| Constructor. | |
| ~Object () override | |
| Destructor. | |
| void | AggregateObject (Ptr< Object > other) |
| Aggregate two Objects together. | |
| void | Dispose () |
| Dispose of this Object. | |
| AggregateIterator | GetAggregateIterator () const |
| Get an iterator to the Objects aggregated to this one. | |
| TypeId | GetInstanceTypeId () const override |
| Get the most derived TypeId for this Object. | |
| template<typename T > | |
| Ptr< T > | GetObject () const |
| Get a pointer to the requested aggregated Object. | |
| template<> | |
| Ptr< Object > | GetObject () const |
| Specialization of () for objects of type ns3::Object. | |
| template<typename T > | |
| Ptr< T > | GetObject (TypeId tid) const |
| Get a pointer to the requested aggregated Object by TypeId. | |
| template<> | |
| Ptr< Object > | GetObject (TypeId tid) const |
| Specialization of (TypeId tid) for objects of type ns3::Object. | |
| void | Initialize () |
| Invoke DoInitialize on all Objects aggregated to this one. | |
| bool | IsInitialized () const |
| Check if the object has been initialized. | |
| void | UnidirectionalAggregateObject (Ptr< Object > other) |
| Aggregate an Object to another Object. | |
| Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter > | |
| SimpleRefCount () | |
| Default constructor. | |
| SimpleRefCount (const SimpleRefCount &o) | |
| Copy constructor. | |
| uint32_t | GetReferenceCount () const |
| Get the reference count of the object. | |
| SimpleRefCount & | operator= (const SimpleRefCount &o) |
| Assignment operator. | |
| void | Ref () const |
| Increment the reference count. | |
| void | Unref () const |
| Decrement the reference count. | |
| Public Member Functions inherited from ns3::ObjectBase | |
| virtual | ~ObjectBase () |
| Virtual destructor. | |
| void | GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const |
| Get the value of an attribute, raising fatal errors if unsuccessful. | |
| bool | GetAttributeFailSafe (std::string name, AttributeValue &value) const |
| Get the value of an attribute without raising errors. | |
| void | SetAttribute (std::string name, const AttributeValue &value) |
| Set a single attribute, raising fatal errors if unsuccessful. | |
| bool | SetAttributeFailSafe (std::string name, const AttributeValue &value) |
| Set a single attribute without raising errors. | |
| bool | TraceConnect (std::string name, std::string context, const CallbackBase &cb) |
| Connect a TraceSource to a Callback with a context. | |
| bool | TraceConnectWithoutContext (std::string name, const CallbackBase &cb) |
| Connect a TraceSource to a Callback without a context. | |
| bool | TraceDisconnect (std::string name, std::string context, const CallbackBase &cb) |
| Disconnect from a TraceSource a Callback previously connected with a context. | |
| bool | TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb) |
| Disconnect from a TraceSource a Callback previously connected without a context. | |
Static Public Member Functions | |
| static TypeId | GetTypeId () |
| Get the type ID. | |
| Static Public Member Functions inherited from ns3::WifiRemoteStationManager | |
| static TypeId | GetTypeId () |
| Get the type ID. | |
| Static Public Member Functions inherited from ns3::Object | |
| static TypeId | GetTypeId () |
| Register this type. | |
| Static Public Member Functions inherited from ns3::ObjectBase | |
| static TypeId | GetTypeId () |
| Get the type ID. | |
Private Member Functions | |
| void | AddFirstMpduTxTime (std::size_t groupId, WifiMode mode, Time t) |
| Save a TxTime to the vector of groups. | |
| void | AddMpduTxTime (std::size_t groupId, WifiMode mode, Time t) |
| Save a TxTime to the vector of groups. | |
| double | CalculateEwmsd (double oldEwmsd, double currentProb, double ewmaProb, double weight) |
| Perform EWMSD (Exponentially Weighted Moving Standard Deviation) calculation. | |
| Time | CalculateMpduTxDuration (uint8_t streams, Time gi, MHz_u chWidth, WifiMode mode, MpduType mpduType) |
| Estimates the TxTime of a frame with a given mode and group (stream, guard interval and channel width). | |
| void | CalculateRetransmits (MinstrelHtWifiRemoteStation *station, std::size_t groupId, uint8_t rateId) |
| Calculate the number of retransmissions to set for the (groupId, rateId) rate. | |
| void | CalculateRetransmits (MinstrelHtWifiRemoteStation *station, uint16_t index) |
| Calculate the number of retransmissions to set for the index rate. | |
| double | CalculateThroughput (MinstrelHtWifiRemoteStation *station, std::size_t groupId, uint8_t rateId, double ewmaProb) |
| Return the average throughput of the MCS defined by groupId and rateId. | |
| Time | CalculateTimeUnicastPacket (Time dataTransmissionTime, uint32_t shortRetries, uint32_t longRetries) |
| Estimate the time to transmit the given packet with the given number of retries. | |
| void | CheckInit (MinstrelHtWifiRemoteStation *station) |
| Check for initializations. | |
| uint32_t | CountRetries (MinstrelHtWifiRemoteStation *station) |
| Count retries. | |
| WifiRemoteStation * | DoCreateStation () const override |
| WifiTxVector | DoGetDataTxVector (WifiRemoteStation *station, MHz_u allowedWidth) override |
| std::list< Ptr< WifiMpdu > > | DoGetMpdusToDropOnTxFailure (WifiRemoteStation *station, Ptr< WifiPsdu > psdu) override |
| Find the MPDUs to drop (possibly based on their frame retry count) in the given PSDU, whose transmission failed. | |
| WifiTxVector | DoGetRtsTxVector (WifiRemoteStation *station) override |
| void | DoInitialize () override |
| Initialize() implementation. | |
| bool | DoNeedRetransmission (WifiRemoteStation *st, Ptr< const Packet > packet, bool normally) |
| void | DoReportAmpduTxStatus (WifiRemoteStation *station, uint16_t nSuccessfulMpdus, uint16_t nFailedMpdus, double rxSnr, double dataSnr, MHz_u dataChannelWidth, uint8_t dataNss) override |
| Typically called per A-MPDU, either when a Block ACK was successfully received or when a BlockAckTimeout has elapsed. | |
| void | DoReportDataFailed (WifiRemoteStation *station) override |
| This method is a pure virtual method that must be implemented by the sub-class. | |
| void | DoReportDataOk (WifiRemoteStation *station, double ackSnr, WifiMode ackMode, double dataSnr, MHz_u dataChannelWidth, uint8_t dataNss) override |
| This method is a pure virtual method that must be implemented by the sub-class. | |
| void | DoReportFinalDataFailed (WifiRemoteStation *station) override |
| This method is a pure virtual method that must be implemented by the sub-class. | |
| void | DoReportFinalRtsFailed (WifiRemoteStation *station) override |
| This method is a pure virtual method that must be implemented by the sub-class. | |
| void | DoReportRtsFailed (WifiRemoteStation *station) override |
| This method is a pure virtual method that must be implemented by the sub-class. | |
| 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. | |
| void | DoReportRxOk (WifiRemoteStation *station, double rxSnr, WifiMode txMode) override |
| This method is a pure virtual method that must be implemented by the sub-class. | |
| uint16_t | FindRate (MinstrelHtWifiRemoteStation *station) |
| Find a rate to use from Minstrel Table. | |
| WifiModeList | GetDeviceMcsList (WifiModulationClass mc) const |
| Returns a list of only the MCS supported by the device for a given modulation class. | |
| Time | GetFirstMpduTxTime (std::size_t groupId, WifiMode mode) const |
| Obtain the TxTime saved in the group information. | |
| std::size_t | GetGroupId (uint16_t index) |
| Return the groupId from the global index. | |
| std::size_t | GetGroupIdForType (McsGroupType type, uint8_t streams, Time guardInterval, MHz_u chWidth) |
| Returns the group ID of an MCS of a given group type with the given number of streams, GI and channel width used. | |
| std::size_t | GetHeGroupId (uint8_t streams, Time guardInterval, MHz_u chWidth) |
| Returns the groupId of an HE MCS with the given number of streams, GI and channel width used. | |
| std::size_t | GetHtGroupId (uint8_t streams, Time guardInterval, MHz_u chWidth) |
| Returns the groupId of an HT MCS with the given number of streams, GI and channel width used. | |
| std::size_t | GetIdInGroup (WifiModulationClass mc, uint8_t streams, Time guardInterval, MHz_u chWidth) |
| Returns the Id of a MCS of a given modulation class with the given number of streams, GI and channel width used in the group associated to that modulation class. | |
| uint16_t | GetIndex (std::size_t groupId, uint8_t rateId) |
| Returns the global index corresponding to the groupId and rateId. | |
| uint16_t | GetLowestIndex (MinstrelHtWifiRemoteStation *station) |
| Returns the lowest global index of the rates supported by the station. | |
| uint16_t | GetLowestIndex (MinstrelHtWifiRemoteStation *station, std::size_t groupId) |
| Returns the lowest global index of the rates supported by in the group. | |
| Time | GetMpduTxTime (std::size_t groupId, WifiMode mode) const |
| Obtain the TxTime saved in the group information. | |
| uint16_t | GetNextSample (MinstrelHtWifiRemoteStation *station) |
| Getting the next sample from Sample Table. | |
| std::size_t | GetNumGroups (WifiModulationClass mc) |
| Returns the number of groups for a given modulation class. | |
| uint8_t | GetRateId (uint16_t index) |
| Return the rateId inside a group, from the global index. | |
| std::size_t | GetVhtGroupId (uint8_t streams, Time guardInterval, MHz_u chWidth) |
| Returns the groupId of a VHT MCS with the given number of streams, GI and channel width used. | |
| void | InitializeGroups (WifiModulationClass mc) |
| Initialize all groups belonging to a given modulation class. | |
| void | InitSampleTable (MinstrelHtWifiRemoteStation *station) |
| Initialize Sample Table. | |
| bool | IsValidMcs (uint8_t streams, MHz_u chWidth, WifiMode mode) |
| Check the validity of a combination of number of streams, chWidth and mode. | |
| void | PrintSampleTable (MinstrelHtWifiRemoteStation *station) |
| Printing Sample Table. | |
| void | PrintTable (MinstrelHtWifiRemoteStation *station) |
| Printing Minstrel Table. | |
| void | RateInit (MinstrelHtWifiRemoteStation *station) |
| Initialize Minstrel Table. | |
| void | SetBestProbabilityRate (MinstrelHtWifiRemoteStation *station, uint16_t index) |
| Set index rate as maxProbRate if it is better than current value. | |
| void | SetBestStationThRates (MinstrelHtWifiRemoteStation *station, uint16_t index) |
| Set index rate as maxTpRate or maxTp2Rate if is better than current values. | |
| void | SetNextSample (MinstrelHtWifiRemoteStation *station) |
| Set the next sample from Sample Table. | |
| bool | ShouldAddMcsToGroup (WifiMode mode, std::size_t groupId) |
| Check whether a given MCS mode should be added to a given group. | |
| void | StatsDump (MinstrelHtWifiRemoteStation *station, std::size_t groupId, std::ofstream &of) |
| Print group statistics. | |
| void | UpdatePacketCounters (MinstrelHtWifiRemoteStation *station, uint16_t nSuccessfulMpdus, uint16_t nFailedMpdus) |
| Update the number of sample count variables. | |
| void | UpdateRate (MinstrelHtWifiRemoteStation *station) |
| Update rate. | |
| uint16_t | UpdateRateAfterAllowedWidth (uint16_t txRate, MHz_u allowedWidth) |
| Given the index of the current TX rate, check whether the channel width is not greater than the given allowed width. | |
| void | UpdateRetry (MinstrelHtWifiRemoteStation *station) |
| Update the number of retries and reset accordingly. | |
| void | UpdateStats (MinstrelHtWifiRemoteStation *station) |
| Update the Minstrel Table. | |
Private Attributes | |
| TracedValue< uint64_t > | m_currentRate |
| Trace rate changes. | |
| uint8_t | m_ewmaLevel |
| Exponential weighted moving average level (or coefficient). | |
| uint32_t | m_frameLength |
| Frame length used to calculate modes TxTime in bytes. | |
| Ptr< MinstrelWifiManager > | m_legacyManager |
| Pointer to an instance of MinstrelWifiManager. | |
| Time | m_legacyUpdateStats |
| How frequent do we calculate the stats for legacy MinstrelWifiManager. | |
| uint8_t | m_lookAroundRate |
| The % to try other rates than our current rate. | |
| MinstrelMcsGroups | m_minstrelGroups |
| Global array for groups information. | |
| uint8_t | m_nSampleCol |
| Number of sample columns. | |
| std::size_t | m_numGroups |
| Number of groups Minstrel should consider. | |
| uint8_t | m_numRates |
| Number of rates per group Minstrel should consider. | |
| bool | m_printStats |
| If statistics table should be printed. | |
| Ptr< UniformRandomVariable > | m_uniformRandomVariable |
| Provides uniform random variables. | |
| Time | m_updateStats |
| How frequent do we calculate the stats. | |
| bool | m_useLatestAmendmentOnly |
| Flag if only the latest supported amendment by both peers should be used. | |
Additional Inherited Members | |
| Protected Member Functions inherited from ns3::WifiRemoteStationManager | |
| void | DoDispose () override |
| Destructor implementation. | |
| Mac48Address | GetAddress (const WifiRemoteStation *station) const |
| Return the address of the station. | |
| bool | GetAggregation (const WifiRemoteStation *station) const |
| Return whether the given station supports A-MPDU. | |
| MHz_u | GetChannelWidth (const WifiRemoteStation *station) const |
| Return the channel width supported by the station. | |
| bool | GetEhtSupported (const WifiRemoteStation *station) const |
| Return whether the given station is EHT capable. | |
| bool | GetEmlsrEnabled (const WifiRemoteStation *station) const |
| bool | GetEmlsrSupported (const WifiRemoteStation *station) const |
| Time | GetGuardInterval (const WifiRemoteStation *station) const |
| Return the shortest HE guard interval duration supported by the station. | |
| bool | GetHeSupported (const WifiRemoteStation *station) const |
| Return whether the given station is HE capable. | |
| bool | GetHtSupported (const WifiRemoteStation *station) const |
| Return whether the given station is HT capable. | |
| WifiMode | GetMcsSupported (const WifiRemoteStation *station, uint8_t i) const |
| Return the WifiMode supported by the specified station at the specified index. | |
| uint8_t | GetNess (const WifiRemoteStation *station) const |
| uint8_t | GetNMcsSupported (const WifiRemoteStation *station) const |
| Return the number of MCS supported by the given station. | |
| uint32_t | GetNNonErpSupported (const WifiRemoteStation *station) const |
| Return the number of non-ERP modes supported by the given station. | |
| WifiMode | GetNonErpSupported (const WifiRemoteStation *station, uint8_t i) const |
| Return whether non-ERP mode associated with the specified station at the specified index. | |
| uint8_t | GetNSupported (const WifiRemoteStation *station) const |
| Return the number of modes supported by the given station. | |
| uint8_t | GetNumberOfSupportedStreams (const WifiRemoteStation *station) const |
| Return the number of supported streams the station has. | |
| bool | GetQosSupported (const WifiRemoteStation *station) const |
| Return whether the given station is QoS capable. | |
| bool | GetShortGuardIntervalSupported (const WifiRemoteStation *station) const |
| Return whether the given station supports HT/VHT short guard interval. | |
| WifiMode | GetSupported (const WifiRemoteStation *station, uint8_t i) const |
| Return whether mode associated with the specified station at the specified index. | |
| bool | GetVhtSupported (const WifiRemoteStation *station) const |
| Return whether the given station is VHT capable. | |
| Protected Member Functions inherited from ns3::Object | |
| Object (const Object &o) | |
| Copy an Object. | |
| virtual void | NotifyNewAggregate () |
| Notify all Objects aggregated to this one of a new Object being aggregated. | |
| Protected Member Functions inherited from ns3::ObjectBase | |
| void | ConstructSelf (const AttributeConstructionList &attributes) |
| Complete construction of ObjectBase; invoked by derived classes. | |
| virtual void | NotifyConstructionCompleted () |
| Notifier called once the ObjectBase is fully constructed. | |
| Protected Attributes inherited from ns3::WifiRemoteStationManager | |
| bool | m_incrRetryCountUnderBa |
| whether to increment the retry count of frames that are part of a Block Ack agreement | |
| uint8_t | m_linkId |
| the ID of the link this object is associated with | |
| Related Symbols inherited from ns3::ObjectBase | |
| static TypeId | GetObjectIid () |
| Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. | |
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.
ns3::MinstrelHtWifiManager is accessible through the following paths with Config::Set and Config::Connect:
Time -9.22337e+18ns:+9.22337e+18ns Time -9.22337e+18ns:+9.22337e+18ns Rts-Cts|Cts-To-Self Rts-Cts|Cts-To-Self WifiMode Time -9.22337e+18ns:+9.22337e+18ns Group: Wifi
Size of this type is 520 bytes (on a 64-bit architecture).
Definition at line 202 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 235 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 161 of file minstrel-ht-wifi-manager.cc.
References ns3::CreateObject(), m_legacyManager, m_uniformRandomVariable, and NS_LOG_FUNCTION.
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Definition at line 175 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 405 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, and NS_LOG_FUNCTION.
Referenced by InitializeGroups().
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Save a TxTime to the vector of groups.
| groupId | the group ID |
| mode | the wifi mode |
| t | the transmit time |
Definition at line 421 of file minstrel-ht-wifi-manager.cc.
References m_minstrelGroups, and NS_LOG_FUNCTION.
Referenced by InitializeGroups().
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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 186 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, m_uniformRandomVariable, and NS_LOG_FUNCTION.
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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 1865 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).
| streams | the number of streams |
| gi | guard interval duration |
| chWidth | the channel width |
| mode | the wifi mode |
| mpduType | the type of the MPDU |
Definition at line 378 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::CalculatePhyPreambleAndHeaderDuration(), ns3::WifiMode::GetModulationClass(), ns3::WifiPhy::GetPayloadDuration(), ns3::WifiRemoteStationManager::GetPhy(), ns3::GetPreambleForTransmission(), m_frameLength, NS_LOG_FUNCTION, and ns3::WifiTxVector::SetNss().
Referenced by InitializeGroups().
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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 1807 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(), Min, and NS_LOG_FUNCTION.
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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 1795 of file minstrel-ht-wifi-manager.cc.
References CalculateRetransmits(), GetGroupId(), GetRateId(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, and NS_LOG_FUNCTION.
Referenced by CalculateRetransmits(), RateInit(), and UpdateStats().
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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 1496 of file minstrel-ht-wifi-manager.cc.
References ns3::MinstrelHtWifiRemoteStation::m_groupsTable.
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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:
| 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 470 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetHtSupported(), ns3::WifiRemoteStationManager::GetNMcsSupported(), ns3::WifiRemoteStationManager::GetStationHe6GhzCapabilities(), InitSampleTable(), ns3::WifiRemoteStationState::m_address, 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, ns3::WifiRemoteStation::m_state, 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 1177 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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Implements ns3::WifiRemoteStationManager.
Definition at line 428 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::GetDevice(), ns3::WifiRemoteStationManager::GetPhy(), 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 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 964 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::Time::GetNanoSeconds(), 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, ns3::NanoSeconds(), NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::McsGroup::streams, ns3::McsGroup::type, UpdateRateAfterAllowedWidth(), and ns3::WIFI_MINSTREL_GROUP_HE.
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Find the MPDUs to drop (possibly based on their frame retry count) in the given PSDU, whose transmission failed.
| station | the station the PSDU is addressed to |
| psdu | the given PSDU |
Reimplemented from ns3::WifiRemoteStationManager.
Definition at line 1116 of file minstrel-ht-wifi-manager.cc.
References DoNeedRetransmission(), ns3::WifiRemoteStationManager::GetMac(), NS_LOG_FUNCTION, and ns3::PeekPointer().
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| 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 1034 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::WifiPhy::GetModeList(), ns3::WifiMode::GetModulationClass(), ns3::WifiRemoteStationManager::GetNBasicModes(), ns3::WifiRemoteStationManager::GetPhy(), ns3::GetPreambleForTransmission(), GetRateId(), ns3::WifiRemoteStationManager::GetShortPreambleEnabled(), m_legacyManager, ns3::NanoSeconds(), NS_ASSERT, NS_LOG_DEBUG, and NS_LOG_FUNCTION.
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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:
Reimplemented from ns3::Object.
Definition at line 284 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetHeSupported(), ns3::WifiRemoteStationManager::GetHtSupported(), GetNumGroups(), ns3::WifiRemoteStationManager::GetVhtSupported(), InitializeGroups(), m_minstrelGroups, m_numGroups, m_numRates, ns3::minstrelHtStandardInfos, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::WIFI_MOD_CLASS_HE, ns3::WIFI_MOD_CLASS_HT, and ns3::WIFI_MOD_CLASS_VHT.
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| st | 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.
Definition at line 1137 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), CountRetries(), m_legacyManager, NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by DoGetMpdusToDropOnTxFailure().
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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 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 720 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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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 557 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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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 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 of the DATA we sent |
| dataNss | the number of spatial streams used to send the DATA |
Implements ns3::WifiRemoteStationManager.
Definition at line 587 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 673 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 543 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 520 of file minstrel-ht-wifi-manager.cc.
References CheckInit(), NS_LOG_DEBUG, and 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 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 534 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 512 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 1245 of file minstrel-ht-wifi-manager.cc.
References 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, and NS_LOG_FUNCTION.
Referenced by DoReportAmpduTxStatus(), DoReportDataOk(), DoReportFinalDataFailed(), and RateInit().
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Returns a list of only the MCS supported by the device for a given modulation class.
| mc | the modulation class |
Definition at line 2157 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiPhy::GetMcsList(), and ns3::WifiRemoteStationManager::GetPhy().
Referenced by InitializeGroups().
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Obtain the TxTime saved in the group information.
| groupId | the group ID |
| mode | the wifi mode |
Definition at line 396 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 2042 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 the group ID of an MCS of a given group type with the given number of streams, GI and channel width used.
| type | the MCS group type |
| streams | the number of streams |
| guardInterval | guard interval duration |
| chWidth | the channel width |
Definition at line 2102 of file minstrel-ht-wifi-manager.cc.
References GetHeGroupId(), GetHtGroupId(), GetVhtGroupId(), NS_ABORT_MSG, ns3::WIFI_MINSTREL_GROUP_HE, ns3::WIFI_MINSTREL_GROUP_HT, and ns3::WIFI_MINSTREL_GROUP_VHT.
Referenced by InitializeGroups(), and UpdateRateAfterAllowedWidth().
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Returns the groupId of an HE MCS with the given number of streams, GI and channel width used.
| streams | the number of streams |
| guardInterval | guard interval duration |
| chWidth | the channel width |
Definition at line 2090 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiRemoteStationManager::GetHtSupported(), GetIdInGroup(), GetNumGroups(), ns3::WifiRemoteStationManager::GetVhtSupported(), NS_LOG_FUNCTION, ns3::WIFI_MOD_CLASS_HE, ns3::WIFI_MOD_CLASS_HT, and ns3::WIFI_MOD_CLASS_VHT.
Referenced by GetGroupIdForType().
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Returns the groupId of an HT MCS with the given number of streams, GI and channel width used.
| streams | the number of streams |
| guardInterval | guard interval duration |
| chWidth | the channel width |
Definition at line 2074 of file minstrel-ht-wifi-manager.cc.
References GetIdInGroup(), NS_LOG_FUNCTION, and ns3::WIFI_MOD_CLASS_HT.
Referenced by GetGroupIdForType().
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Returns the Id of a MCS of a given modulation class with the given number of streams, GI and channel width used in the group associated to that modulation class.
| mc | the modulation class |
| streams | the number of streams |
| guardInterval | guard interval duration |
| chWidth | the channel width |
Definition at line 2049 of file minstrel-ht-wifi-manager.cc.
References ns3::minstrelHtStandardInfos, and NS_LOG_FUNCTION.
Referenced by GetHeGroupId(), GetHtGroupId(), and GetVhtGroupId().
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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 2028 of file minstrel-ht-wifi-manager.cc.
References m_numRates, and NS_LOG_FUNCTION.
Referenced by GetLowestIndex(), 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 2122 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 2142 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 412 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 1200 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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Returns the number of groups for a given modulation class.
| mc | the modulation class |
Definition at line 2066 of file minstrel-ht-wifi-manager.cc.
References ns3::minstrelHtStandardInfos.
Referenced by DoInitialize(), GetHeGroupId(), and GetVhtGroupId().
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Return the rateId inside a group, from the global index.
| index | the index |
Definition at line 2035 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 107 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::MakeUintegerChecker(), ns3::MilliSeconds(), and ns3::TypeId::SetParent().
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Returns the groupId of a VHT MCS with the given number of streams, GI and channel width used.
| streams | the number of streams |
| guardInterval | guard interval duration |
| chWidth | the channel width |
Definition at line 2081 of file minstrel-ht-wifi-manager.cc.
References GetIdInGroup(), GetNumGroups(), NS_LOG_FUNCTION, ns3::WIFI_MOD_CLASS_HT, and ns3::WIFI_MOD_CLASS_VHT.
Referenced by GetGroupIdForType().
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Initialize all groups belonging to a given modulation class.
| mc | the modulation class |
Is GI supported by the transmitter?
Is SGI supported by the transmitter?
Is channel width supported by the transmitter?
Are streams supported by the transmitter?
Definition at line 214 of file minstrel-ht-wifi-manager.cc.
References AddFirstMpduTxTime(), AddMpduTxTime(), CalculateMpduTxDuration(), ns3::FIRST_MPDU_IN_AGGREGATE, ns3::WifiRemoteStationManager::GetChannelWidth(), GetDeviceMcsList(), GetGroupIdForType(), ns3::WifiRemoteStationManager::GetGuardInterval(), ns3::WifiRemoteStationManager::GetPhy(), ns3::WifiRemoteStationManager::GetShortGuardIntervalSupported(), IsValidMcs(), m_minstrelGroups, ns3::MIDDLE_MPDU_IN_AGGREGATE, ns3::minstrelHtStandardInfos, NS_LOG_DEBUG, ns3::WIFI_MOD_CLASS_HE, and ns3::WIFI_MOD_CLASS_HT.
Referenced by DoInitialize().
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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 1885 of file minstrel-ht-wifi-manager.cc.
References 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.
| streams | the number of streams |
| chWidth | the channel width |
| mode | the wifi mode |
Definition at line 346 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiTxVector::IsValid(), NS_LOG_FUNCTION, ns3::WifiTxVector::SetChannelWidth(), ns3::WifiTxVector::SetMode(), and ns3::WifiTxVector::SetNss().
Referenced by InitializeGroups(), and ShouldAddMcsToGroup().
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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 1916 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, 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.
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 1659 of file minstrel-ht-wifi-manager.cc.
References CalculateRetransmits(), FindRate(), ns3::WifiRemoteStationManager::GetChannelWidth(), GetFirstMpduTxTime(), ns3::WifiRemoteStationManager::GetGuardInterval(), ns3::WifiRemoteStationManager::GetHeSupported(), ns3::WifiRemoteStationManager::GetMcsSupported(), ns3::WifiRemoteStationManager::GetNumberOfSupportedStreams(), ns3::WifiRemoteStationManager::GetShortGuardIntervalSupported(), ns3::WifiRemoteStationManager::GetVhtSupported(), ns3::MinstrelHtWifiRemoteStation::m_groupsTable, m_minstrelGroups, ns3::MinstrelWifiRemoteStation::m_nModes, m_numGroups, m_numRates, ns3::MinstrelWifiRemoteStation::m_txrate, m_useLatestAmendmentOnly, ns3::minstrelHtStandardInfos, NS_FATAL_ERROR, NS_LOG_DEBUG, NS_LOG_FUNCTION, SetNextSample(), ShouldAddMcsToGroup(), UpdateStats(), ns3::WIFI_MINSTREL_GROUP_HE, ns3::WIFI_MINSTREL_GROUP_VHT, and ns3::WIFI_MOD_CLASS_HT.
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 1529 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 1594 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 1214 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 206 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, 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 197 of file minstrel-ht-wifi-manager.cc.
References m_legacyManager, NS_LOG_FUNCTION, and ns3::WifiRemoteStationManager::SetupPhy().
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Check whether a given MCS mode should be added to a given group.
| mode | the MCS mode |
| groupId | the group ID |
Check if the HT MCS corresponds to groups number of streams.
Definition at line 357 of file minstrel-ht-wifi-manager.cc.
References ns3::WifiMode::GetMcsValue(), ns3::WifiMode::GetModulationClass(), IsValidMcs(), m_minstrelGroups, ns3::minstrelHtStandardInfos, and ns3::WIFI_MOD_CLASS_HT.
Referenced by RateInit().
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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 1945 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::minstrelHtStandardInfos, ns3::McsGroup::streams, ns3::McsGroup::type, ns3::WIFI_MINSTREL_GROUP_HT, and ns3::WIFI_MOD_CLASS_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 896 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 780 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 |
Definition at line 922 of file minstrel-ht-wifi-manager.cc.
References ns3::McsGroup::chWidth, GetGroupId(), GetGroupIdForType(), GetIndex(), ns3::WifiRemoteStationManager::GetPhy(), GetRateId(), ns3::McsGroup::gi, ns3::McsGroup::isSupported, m_minstrelGroups, NS_ABORT_MSG_IF, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::McsGroup::streams, and ns3::McsGroup::type.
Referenced by DoGetDataTxVector().
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Update the number of retries and reset accordingly.
| station | the wifi remote station |
Definition at line 888 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 1362 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 707 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 691 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 693 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 702 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 688 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 690 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), and GetTypeId().
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Global array for groups information.
Definition at line 700 of file minstrel-ht-wifi-manager.h.
Referenced by ~MinstrelHtWifiManager(), AddFirstMpduTxTime(), AddMpduTxTime(), DoGetDataTxVector(), DoInitialize(), FindRate(), GetFirstMpduTxTime(), GetMpduTxTime(), InitializeGroups(), RateInit(), ShouldAddMcsToGroup(), StatsDump(), and UpdateRateAfterAllowedWidth().
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Number of sample columns.
Definition at line 692 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 694 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 695 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 698 of file minstrel-ht-wifi-manager.h.
Referenced by CheckInit(), GetTypeId(), and UpdateStats().
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Provides uniform random variables.
Definition at line 705 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 687 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 696 of file minstrel-ht-wifi-manager.h.
Referenced by GetTypeId(), and RateInit().
1.11.0