A Discrete-Event Network Simulator
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
3 * Copyright (c) 2020 Universita' degli Studi di Napoli Federico II
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6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
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9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * GNU General Public License for more details.
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15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 * Author: Stefano Avallone <stavallo@unina.it>
19 */
24#include "ns3/vht-frame-exchange-manager.h"
25#include "mu-snr-tag.h"
26#include <map>
27#include <unordered_map>
29namespace ns3 {
31class MultiUserScheduler;
32class ApWifiMac;
33class StaWifiMac;
34class CtrlTriggerHeader;
39typedef std::unordered_map <uint16_t /* staId */, Ptr<WifiPsdu> /* PSDU */> WifiPsduMap;
43typedef std::unordered_map <uint16_t /* staId */, Ptr<const WifiPsdu> /* PSDU */> WifiConstPsduMap;
58 static TypeId GetTypeId (void);
60 virtual ~HeFrameExchangeManager ();
62 uint16_t GetSupportedBaBufferSize (void) const override;
63 bool StartFrameExchange (Ptr<QosTxop> edca, Time availableTime, bool initialFrame) override;
64 void SetWifiMac (const Ptr<WifiMac> mac) override;
65 void CalculateAcknowledgmentTime (WifiAcknowledgment* acknowledgment) const override;
66 void SetTxopHolder (Ptr<const WifiPsdu> psdu, const WifiTxVector& txVector) override;
73 void SetMultiUserScheduler (const Ptr<MultiUserScheduler> muScheduler);
83 static Ptr<WifiPsdu> GetPsduTo (Mac48Address to, const WifiPsduMap& psduMap);
92 virtual void SetTargetRssi (CtrlTriggerHeader& trigger) const;
95 void DoDispose () override;
97 void ReceiveMpdu (Ptr<WifiMacQueueItem> mpdu, RxSignalInfo rxSignalInfo,
98 const WifiTxVector& txVector, bool inAmpdu) override;
99 void EndReceiveAmpdu (Ptr<const WifiPsdu> psdu, const RxSignalInfo& rxSignalInfo,
100 const WifiTxVector& txVector, const std::vector<bool>& perMpduStatus) override;
101 Time GetTxDuration (uint32_t ppduPayloadSize, Mac48Address receiver,
102 const WifiTxParameters& txParams) const override;
103 bool SendMpduFromBaManager (Ptr<QosTxop> edca, Time availableTime, bool initialFrame) override;
121 void ForwardPsduMapDown (WifiConstPsduMap psduMap, WifiTxVector& txVector);
132 virtual void BlockAcksInTbPpduTimeout (WifiPsduMap* psduMap,
133 const std::set<Mac48Address>* staMissedBlockAckFrom,
134 std::size_t nSolicitedStations);
145 virtual void TbPpduTimeout (WifiPsduMap* psduMap,
146 const std::set<Mac48Address>* staMissedTbPpduFrom,
147 std::size_t nSolicitedStations);
156 virtual void BlockAckAfterTbPpduTimeout (Ptr<WifiPsdu> psdu, const WifiTxVector& txVector);
168 WifiTxVector GetHeTbTxVector (CtrlTriggerHeader trigger, Mac48Address triggerSender) const;
182 Ptr<WifiMacQueueItem> PrepareMuBar (const WifiTxVector& responseTxVector,
183 std::map<uint16_t, CtrlBAckRequestHeader> recipients) const;
190 void SendMultiStaBlockAck (const WifiTxParameters& txParams);
200 void SendQosNullFramesInTbPpdu (const CtrlTriggerHeader& trigger, const WifiMacHeader& hdr);
209 void SendPsduMap (void);
217 void ReceiveBasicTrigger (const CtrlTriggerHeader& trigger, const WifiMacHeader& hdr);
223 std::set<Mac48Address> m_staExpectTbPpduFrom;
229} //namespace ns3
Headers for Trigger frames.
Definition: ctrl-headers.h:886
An identifier for simulation events.
Definition: event-id.h:54
HeFrameExchangeManager handles the frame exchange sequences for HE stations.
Ptr< ApWifiMac > m_apMac
MAC pointer (null if not an AP)
bool SendMpduFromBaManager(Ptr< QosTxop > edca, Time availableTime, bool initialFrame) override
If the Block Ack Manager associated with the given EDCA has a BlockAckReq frame to transmit (the dura...
void SendQosNullFramesInTbPpdu(const CtrlTriggerHeader &trigger, const WifiMacHeader &hdr)
Send QoS Null frames in response to a Basic or BSRP Trigger Frame.
void DoDispose() override
Destructor implementation.
WifiTxParameters m_txParams
the TX parameters for the current PPDU
Time GetTxDuration(uint32_t ppduPayloadSize, Mac48Address receiver, const WifiTxParameters &txParams) const override
Get the updated TX duration of the frame associated with the given TX parameters if the size of the P...
Ptr< WifiMacQueueItem > m_triggerFrame
Trigger Frame being sent.
void CalculateAcknowledgmentTime(WifiAcknowledgment *acknowledgment) const override
Calculate the time required to acknowledge a frame according to the given acknowledgment method.
void SetMultiUserScheduler(const Ptr< MultiUserScheduler > muScheduler)
Set the Multi-user Scheduler associated with this Frame Exchange Manager.
virtual void TbPpduTimeout(WifiPsduMap *psduMap, const std::set< Mac48Address > *staMissedTbPpduFrom, std::size_t nSolicitedStations)
Take the necessary actions after that some TB PPDUs are missing in response to Trigger Frame.
void SetWifiMac(const Ptr< WifiMac > mac) override
Set the MAC layer to use.
bool m_triggerFrameInAmpdu
True if the received A-MPDU contains an MU-BAR.
Ptr< MultiUserScheduler > m_muScheduler
Multi-user Scheduler (HE APs only)
virtual void SetTargetRssi(CtrlTriggerHeader &trigger) const
Set the UL Target RSSI subfield of every User Info fields of the given Trigger Frame to the most rece...
static Ptr< WifiPsdu > GetPsduTo(Mac48Address to, const WifiPsduMap &psduMap)
Get the PSDU in the given PSDU map that is addressed to the given MAC address, if any,...
void EndReceiveAmpdu(Ptr< const WifiPsdu > psdu, const RxSignalInfo &rxSignalInfo, const WifiTxVector &txVector, const std::vector< bool > &perMpduStatus) override
This method is called when the reception of an A-MPDU including multiple MPDUs is completed.
Ptr< StaWifiMac > m_staMac
MAC pointer (null if not a STA)
void SendMultiStaBlockAck(const WifiTxParameters &txParams)
Send a Multi-STA Block Ack frame after the reception of some TB PPDUs.
static TypeId GetTypeId(void)
Get the type ID.
MuSnrTag m_muSnrTag
Tag to attach to Multi-STA BlockAck frames.
void ForwardPsduMapDown(WifiConstPsduMap psduMap, WifiTxVector &txVector)
Forward a map of PSDUs down to the PHY layer.
bool StartFrameExchange(Ptr< QosTxop > edca, Time availableTime, bool initialFrame) override
Start a frame exchange (including protection frames and acknowledgment frames as needed) that fits wi...
std::set< Mac48Address > m_staExpectTbPpduFrom
set of stations expected to send a TB PPDU
void ReceiveMpdu(Ptr< WifiMacQueueItem > mpdu, RxSignalInfo rxSignalInfo, const WifiTxVector &txVector, bool inAmpdu) override
This method handles the reception of an MPDU (possibly included in an A-MPDU)
virtual void BlockAckAfterTbPpduTimeout(Ptr< WifiPsdu > psdu, const WifiTxVector &txVector)
Take the necessary actions after that a Block Ack is missing after a TB PPDU solicited through a Trig...
void SendPsduMap(void)
Send the current PSDU map as a DL MU PPDU.
uint16_t GetSupportedBaBufferSize(void) const override
Get the maximum supported buffer size for a Block Ack agreement.
WifiPsduMap m_psduMap
the A-MPDU being transmitted
virtual void BlockAcksInTbPpduTimeout(WifiPsduMap *psduMap, const std::set< Mac48Address > *staMissedBlockAckFrom, std::size_t nSolicitedStations)
Take the necessary actions after that some BlockAck frames are missing in response to a DL MU PPDU.
EventId m_multiStaBaEvent
Sending a Multi-STA BlockAck event.
void SetTxopHolder(Ptr< const WifiPsdu > psdu, const WifiTxVector &txVector) override
Set the TXOP holder, if needed, based on the received frame.
void SendPsduMapWithProtection(WifiPsduMap psduMap, WifiTxParameters &txParams)
Send a map of PSDUs as a DL MU PPDU.
void ReceiveBasicTrigger(const CtrlTriggerHeader &trigger, const WifiMacHeader &hdr)
Take the necessary actions when receiveing a Basic Trigger Frame.
WifiTxVector GetHeTbTxVector(CtrlTriggerHeader trigger, Mac48Address triggerSender) const
Return a TXVECTOR for the UL frame that the station will send in response to the given Trigger frame,...
Ptr< WifiMacQueueItem > PrepareMuBar(const WifiTxVector &responseTxVector, std::map< uint16_t, CtrlBAckRequestHeader > recipients) const
Build a MU-BAR Trigger Frame starting from the TXVECTOR used to respond to the MU-BAR (in case of mul...
an EUI-48 address
Definition: mac48-address.h:44
A tag to be attached to a response to a multi-user UL frame, that carries the SNR values with which t...
Definition: mu-snr-tag.h:36
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:103
a unique identifier for an interface.
Definition: type-id.h:59
VhtFrameExchangeManager handles the frame exchange sequences for VHT stations.
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.
std::unordered_map< uint16_t, Ptr< const WifiPsdu > > WifiConstPsduMap
Map of const PSDUs indexed by STA-ID.
std::unordered_map< uint16_t, Ptr< WifiPsdu > > WifiPsduMap
Map of PSDUs indexed by STA-ID.
Definition: third.py:99
RxSignalInfo structure containing info on the received signal.
Definition: phy-entity.h:67
WifiAcknowledgment is an abstract base struct.