36#include "ns3/he-capabilities.h"
37#include "ns3/ht-capabilities.h"
38#include "ns3/ht-frame-exchange-manager.h"
40#include "ns3/packet.h"
41#include "ns3/vht-capabilities.h"
93 NS_ASSERT(!isSingle || ampdu->GetSize() == 0);
96 if (ampdu->GetSize() > 0)
103 ampdu->AddAtEnd(pad);
109 tmp->AddHeader(mpdu->GetHeader());
117 ampdu->AddAtEnd(tmp);
140 if (maxAmpduSize == 0)
142 NS_LOG_DEBUG(
"A-MPDU Aggregation is disabled on this station for AC " << ac);
152 stationManager->GetStationVhtCapabilities(recipient);
159 NS_ABORT_MSG_IF(!heCapabilities,
"HE Capabilities element not received");
161 maxAmpduSize = std::min(maxAmpduSize, heCapabilities->GetMaxAmpduLength());
165 NS_ABORT_MSG_IF(!vhtCapabilities,
"VHT Capabilities element not received");
167 maxAmpduSize = std::min(maxAmpduSize, vhtCapabilities->GetMaxAmpduLength());
171 NS_ABORT_MSG_IF(!htCapabilities,
"HT Capabilities element not received");
173 maxAmpduSize = std::min(maxAmpduSize, htCapabilities->GetMaxAmpduLength());
177 NS_LOG_DEBUG(
"A-MPDU aggregation is not available for non-HT PHYs");
188 return (4 - (ampduSize % 4)) % 4;
203std::vector<Ptr<WifiMpdu>>
206 Time availableTime)
const
210 std::vector<Ptr<WifiMpdu>> mpduList;
214 uint8_t tid = mpdu->GetHeader().GetQosTid();
215 auto origRecipient = mpdu->GetOriginal()->GetHeader().GetAddr1();
231 << nextMpdu->GetHeader().GetSequenceNumber()
232 <<
" to A-MPDU, packet size = " << nextMpdu->GetSize()
233 <<
", A-MPDU size = " << txParams.
GetSize(recipient));
235 mpduList.push_back(nextMpdu);
239 qosTxop->PeekNextMpdu(
m_linkId, tid, origRecipient, nextMpdu->GetOriginal());
246 qosTxop->GetBaStartingSequence(origRecipient, tid),
247 qosTxop->GetBaBufferSize(origRecipient, tid)));
249 peekedMpdu =
m_htFem->CreateAliasIfNeeded(peekedMpdu);
255 qosTxop->GetNextMpdu(
m_linkId, peekedMpdu, txParams, availableTime,
false);
259 if (mpduList.size() == 1)
Aggregator used to construct A-MPDUs.
static uint8_t CalculatePadding(uint32_t ampduSize)
void DoDispose() override
Destructor implementation.
static void Aggregate(Ptr< const WifiMpdu > mpdu, Ptr< Packet > ampdu, bool isSingle)
Aggregate an MPDU to an A-MPDU.
Ptr< WifiMac > m_mac
the MAC of this station
Ptr< HtFrameExchangeManager > m_htFem
the HT Frame Exchange Manager of this station
uint32_t GetMaxAmpduSize(Mac48Address recipient, uint8_t tid, WifiModulationClass modulation) const
Determine the maximum size for an A-MPDU of the given TID that can be sent to the given receiver when...
static AmpduSubframeHeader GetAmpduSubframeHeader(uint16_t mpduSize, bool isSingle)
Get the A-MPDU subframe header corresponding to the MPDU size and whether the MPDU is a single MPDU.
static TypeId GetTypeId()
Get the type ID.
void SetWifiMac(const Ptr< WifiMac > mac)
Set the MAC layer to use.
static uint32_t GetSizeIfAggregated(uint32_t mpduSize, uint32_t ampduSize)
Compute the size of the A-MPDU resulting from the aggregation of an MPDU of size mpduSize and an A-MP...
std::vector< Ptr< WifiMpdu > > GetNextAmpdu(Ptr< WifiMpdu > mpdu, WifiTxParameters &txParams, Time availableTime) const
Attempt to aggregate other MPDUs to the given MPDU, while meeting the following constraints:
void SetLinkId(uint8_t linkId)
Set the ID of the link this MPDU aggregator is associated with.
uint8_t m_linkId
ID of the link this object is connected to.
A base class which provides memory management and object aggregation.
virtual void DoDispose()
Destructor implementation.
Smart pointer class similar to boost::intrusive_ptr.
Simulation virtual time values and global simulation resolution.
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Ptr< FrameExchangeManager > GetFrameExchangeManager(uint8_t linkId=SINGLE_LINK_OP_ID) const
Get the Frame Exchange Manager associated with the given link.
uint32_t GetMaxAmpduSize(AcIndex ac) const
Return the maximum A-MPDU size of the given Access Category.
Ptr< WifiRemoteStationManager > GetWifiRemoteStationManager(uint8_t linkId=0) const
OriginatorAgreementOptConstRef GetBaAgreementEstablishedAsOriginator(Mac48Address recipient, uint8_t tid) const
Ptr< QosTxop > GetQosTxop(AcIndex ac) const
Accessor for a specified EDCA object.
This class stores the TX parameters (TX vector, protection mechanism, acknowledgment mechanism,...
uint32_t GetSize(Mac48Address receiver) const
Get the size in bytes of the (A-)MPDU addressed to the given receiver.
WifiTxVector m_txVector
TXVECTOR of the frame being prepared.
WifiModulationClass GetModulationClass() const
Get the modulation class specified by this TXVECTOR.
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
#define NS_ABORT_MSG_IF(cond, msg)
Abnormal program termination if a condition is true, with a message.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
AcIndex QosUtilsMapTidToAc(uint8_t tid)
Maps TID (Traffic ID) to Access classes.
WifiModulationClass
This enumeration defines the modulation classes per (Table 10-6 "Modulation classes"; IEEE 802....
AcIndex
This enumeration defines the Access Categories as an enumeration with values corresponding to the AC ...
@ WIFI_MOD_CLASS_HT
HT (Clause 19)
@ WIFI_MOD_CLASS_VHT
VHT (Clause 22)
@ WIFI_MOD_CLASS_HE
HE (Clause 27)
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void AddWifiMacTrailer(Ptr< Packet > packet)
Add FCS trailer to a packet.
bool IsInWindow(uint16_t seq, uint16_t winstart, uint16_t winsize)