A Discrete-Event Network Simulator
API
qos-frame-exchange-manager.h
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2/*
3 * Copyright (c) 2020 Universita' degli Studi di Napoli Federico II
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18 * Author: Stefano Avallone <stavallo@unina.it>
19 */
20
21#ifndef QOS_FRAME_EXCHANGE_MANAGER_H
22#define QOS_FRAME_EXCHANGE_MANAGER_H
23
25
26namespace ns3 {
27
28
37{
38public:
43 static TypeId GetTypeId (void);
45 virtual ~QosFrameExchangeManager ();
46
47 bool StartTransmission (Ptr<Txop> edca, uint16_t allowedWidth) override;
48
62 bool TryAddMpdu (Ptr<const WifiMpdu> mpdu, WifiTxParameters& txParams, Time availableTime) const;
63
74 virtual bool IsWithinLimitsIfAddMpdu (Ptr<const WifiMpdu> mpdu, const WifiTxParameters& txParams,
75 Time ppduDurationLimit) const;
76
90 virtual bool IsWithinSizeAndTimeLimits (uint32_t ppduPayloadSize, Mac48Address receiver,
91 const WifiTxParameters& txParams, Time ppduDurationLimit) const;
92
93protected:
94 void DoDispose () override;
95
96 void ReceiveMpdu (Ptr<WifiMpdu> mpdu, RxSignalInfo rxSignalInfo,
97 const WifiTxVector& txVector, bool inAmpdu) override;
98 void PreProcessFrame (Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) override;
99 Time GetFrameDurationId (const WifiMacHeader& header, uint32_t size,
100 const WifiTxParameters& txParams,
101 Ptr<Packet> fragmentedPacket) const override;
102 Time GetRtsDurationId (const WifiTxVector& rtsTxVector, Time txDuration,
103 Time response) const override;
104 Time GetCtsToSelfDurationId (const WifiTxVector& ctsTxVector, Time txDuration,
105 Time response) const override;
106 void TransmissionSucceeded (void) override;
107 void TransmissionFailed (void) override;
108 void ForwardMpduDown (Ptr<WifiMpdu> mpdu, WifiTxVector& txVector) override;
109
119 virtual bool StartTransmission (Ptr<QosTxop> edca, Time txopDuration);
120
134 virtual bool StartFrameExchange (Ptr<QosTxop> edca, Time availableTime, bool initialFrame);
135
141 void PifsRecovery (void);
142
149 virtual bool SendCfEndIfNeeded (void);
150
157 virtual void SetTxopHolder (Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector);
158
164private:
165
170 void CancelPifsRecovery (void);
171
176};
177
178} //namespace ns3
179
180#endif /* QOS_FRAME_EXCHANGE_MANAGER_H */
An identifier for simulation events.
Definition: event-id.h:54
FrameExchangeManager is a base class handling the basic frame exchange sequences for non-QoS stations...
an EUI-48 address
Definition: mac48-address.h:44
QosFrameExchangeManager handles the frame exchange sequences for QoS stations.
EventId m_pifsRecoveryEvent
event associated with an attempt of PIFS recovery
void ForwardMpduDown(Ptr< WifiMpdu > mpdu, WifiTxVector &txVector) override
Forward an MPDU down to the PHY layer.
virtual bool StartFrameExchange(Ptr< QosTxop > edca, Time availableTime, bool initialFrame)
Start a frame exchange (including protection frames and acknowledgment frames as needed) that fits wi...
virtual void SetTxopHolder(Ptr< const WifiPsdu > psdu, const WifiTxVector &txVector)
Set the TXOP holder, if needed, based on the received frame.
Time GetFrameDurationId(const WifiMacHeader &header, uint32_t size, const WifiTxParameters &txParams, Ptr< Packet > fragmentedPacket) const override
Compute how to set the Duration/ID field of a frame being transmitted with the given TX parameters.
Time GetCtsToSelfDurationId(const WifiTxVector &ctsTxVector, Time txDuration, Time response) const override
Compute how to set the Duration/ID field of a CTS-to-self frame to send to protect a frame transmitte...
Ptr< QosTxop > m_edca
the EDCAF that gained channel access
virtual bool IsWithinLimitsIfAddMpdu(Ptr< const WifiMpdu > mpdu, const WifiTxParameters &txParams, Time ppduDurationLimit) const
Check whether the given MPDU can be added to the frame being built (as described by the given TX para...
virtual bool SendCfEndIfNeeded(void)
Send a CF-End frame to indicate the completion of the TXOP, provided that the remaining duration is l...
Mac48Address m_txopHolder
MAC address of the TXOP holder.
bool StartTransmission(Ptr< Txop > edca, uint16_t allowedWidth) override
Request the FrameExchangeManager to start a frame exchange sequence.
Time GetRtsDurationId(const WifiTxVector &rtsTxVector, Time txDuration, Time response) const override
Compute how to set the Duration/ID field of an RTS frame to send to protect a frame transmitted with ...
void CancelPifsRecovery(void)
Cancel the PIFS recovery event and have the EDCAF attempting PIFS recovery release the channel.
void TransmissionSucceeded(void) override
Take necessary actions upon a transmission success.
bool m_initialFrame
true if transmitting the initial frame of a TXOP
void ReceiveMpdu(Ptr< WifiMpdu > mpdu, RxSignalInfo rxSignalInfo, const WifiTxVector &txVector, bool inAmpdu) override
This method handles the reception of an MPDU (possibly included in an A-MPDU)
bool m_pifsRecovery
true if performing a PIFS recovery after failure
Ptr< Txop > m_edcaBackingOff
channel access function that invoked backoff during TXOP
void PreProcessFrame(Ptr< const WifiPsdu > psdu, const WifiTxVector &txVector) override
Perform actions that are possibly needed when receiving any frame, independently of whether the frame...
void TransmissionFailed(void) override
Take necessary actions upon a transmission failure.
bool m_setQosQueueSize
whether to set the Queue Size subfield of the QoS Control field of QoS data frames
virtual bool IsWithinSizeAndTimeLimits(uint32_t ppduPayloadSize, Mac48Address receiver, const WifiTxParameters &txParams, Time ppduDurationLimit) const
Check whether the transmission time of the frame being built (as described by the given TX parameters...
void PifsRecovery(void)
Perform a PIFS recovery as a response to transmission failure within a TXOP.
bool TryAddMpdu(Ptr< const WifiMpdu > mpdu, WifiTxParameters &txParams, Time availableTime) const
Recompute the protection and acknowledgment methods to use if the given MPDU is added to the frame be...
static TypeId GetTypeId(void)
Get the type ID.
void DoDispose() override
Destructor implementation.
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:104
a unique identifier for an interface.
Definition: type-id.h:59
Implements the IEEE 802.11 MAC header.
This class stores the TX parameters (TX vector, protection mechanism, acknowledgment mechanism,...
This class mimics the TXVECTOR which is to be passed to the PHY in order to define the parameters whi...
Every class exported by the ns3 library is enclosed in the ns3 namespace.
RxSignalInfo structure containing info on the received signal.
Definition: phy-entity.h:69