#include <originator-block-ack-agreement.h>

Inheritance diagram for ns3::OriginatorBlockAckAgreement:

Collaboration diagram for ns3::OriginatorBlockAckAgreement:

Public Types
enum	State { PENDING, ESTABLISHED, INACTIVE, UNSUCCESSFUL }

Public Member Functions
	OriginatorBlockAckAgreement ()
	OriginatorBlockAckAgreement (Mac48Address recipient, uint8_t tid)
	~OriginatorBlockAckAgreement ()
void	CompleteExchange (void)
bool	IsBlockAckRequestNeeded (void) const
bool	IsEstablished (void) const
bool	IsInactive (void) const
bool	IsPending (void) const
bool	IsUnsuccessful (void) const
void	NotifyMpduTransmission (uint16_t nextSeqNumber)
void	SetState (enum State state)
Public Member Functions inherited from ns3::BlockAckAgreement
	BlockAckAgreement ()
	BlockAckAgreement (Mac48Address peer, uint8_t tid)
	~BlockAckAgreement ()
uint16_t	GetBufferSize (void) const
Mac48Address	GetPeer (void) const
uint16_t	GetStartingSequence (void) const
uint16_t	GetStartingSequenceControl (void) const
uint8_t	GetTid (void) const
uint16_t	GetTimeout (void) const
bool	IsAmsduSupported (void) const
bool	IsImmediateBlockAck (void) const
void	SetAmsduSupport (bool supported)
void	SetBufferSize (uint16_t bufferSize)
void	SetDelayedBlockAck (void)
void	SetImmediateBlockAck (void)
void	SetStartingSequence (uint16_t seq)
void	SetTimeout (uint16_t timeout)

Private Attributes
bool	m_needBlockAckReq
uint16_t	m_sentMpdus
enum State	m_state

Friends
class	BlockAckManager

Additional Inherited Members
Protected Attributes inherited from ns3::BlockAckAgreement
uint8_t	m_amsduSupported
uint8_t	m_blockAckPolicy
uint16_t	m_bufferSize
EventId	m_inactivityEvent
Mac48Address	m_peer
uint16_t	m_startingSeq
uint8_t	m_tid
uint16_t	m_timeout

Detailed Description

Maintains the state and information about transmitted MPDUs with ack policy block ack for an originator station.

Definition at line 33 of file originator-block-ack-agreement.h.

Member Enumeration Documentation

enum ns3::OriginatorBlockAckAgreement::State

Represents the state for this agreement.

PENDING: If an agreement is in PENDING state it means that an ADDBARequest frame was sent to recipient in order to setup the block ack and the originator is waiting for the relative ADDBAResponse frame.

ESTABLISHED: The block ack is active and all packets relative to this agreement are transmitted with ack policy set to block ack.

INACTIVE: In our implementation, block ack tear-down happens only if an inactivity timeout occurs so we could have an active block ack but a number of packets that doesn't reach the value of m_blockAckThreshold (see ns3::BlockAckManager). In these conditions the agreement becomes INACTIVE until that the number of packets reaches the value of m_blockAckThreshold again.

UNSUCCESSFUL (not used for now): The agreement's state becomes UNSUCCESSFUL if:

its previous state was PENDING and an ADDBAResponse frame wasn't received from recipient station within an interval of time defined by m_bAckSetupTimeout attribute in ns3::WifiMac.
an ADDBAResponse frame is received from recipient and the Status Code field is set to failure.

In both cases for station addressed by BlockAckAgreement::m_peer and for TID BlockAckAgreement::m_tid block ack mechanism won't be used.

Enumerator: