Ieee80211AddbaRequest

class

8.5.5.2 ADDBA Request frame format

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
Ieee80211ActionFrame	class	8.3.3.13 Action frame format -- mgmt frame with subtype action

Fields

Name	Type	Description
chunkLength	b
category	short
blockAckAction	uint8_t	TODO: subclasses will add action subfield contents WirelessNetworkManagementAction action; // action TODO: remove it
dialogToken	uint8_t	Dialog Token field is set to a nonzero value chosen by the STA. (1 byte)
aMsduSupported	bool	Block Ack Parameter Set field (2 bytes)
blockAckPolicy	bool	The Block Ack Policy subfield is set to 1 for immediate Block Ack and 0 for delayed Block Ack. (1 bit)
tid	uint8_t	The TID subfield contains the value of the TC or TS for which the BlockAck is being requested. (4 bits)
bufferSize	uint16_t	The Buffer Size subfield indicates the number of buffers available for this particular TID. (10 bits)
blockAckTimeoutValue	simtime_t	Block Ack Timeout Value field (2 bytes) The Block Ack Timeout Value field contains the duration, in TUs, after which the Block Ack setup is terminated, if there are no frame exchanges (see 10.5.4) within this duration using this Block Ack agreement. A value of 0 disables the timeout.
_fragmentNumber	uint8_t	Block Ack Starting Sequence Control (2 bytes) The Starting Sequence Number subfield of the Block Ack Starting Sequence Control subfield contains the sequence number of the first MSDU for which this Basic BlockAckReq frame is sent. The Fragment Number subfield is set to 0.
startingSequenceNumber	SequenceNumber	the sequence number of the first MSDU (12 bits)
type	Ieee80211FrameType	type and subtype
address3	MacAddress
fragmentNumber	short
sequenceNumber	SequenceNumber
transmitterAddress	MacAddress	aka address2 (TA)
toDS	bool
fromDS	bool
moreFragments	bool
retry	bool
powerMgmt	bool	unused
moreData	bool	unused
protectedFrame	bool	unused
order	bool	unused
durationField	simtime_t	"duration" in the Duration/ID field (-1=no duration)
AID	short	"id" (Association ID) in the Duration/ID field (-1=no ID)
receiverAddress	MacAddress	aka address1 (RA)
MACArrive	simtime_t	FIXME remove it, technical data, used inside of MAC module
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
rawBin	string[]
rawHex	string[]
tags	RegionTagSet::cObjectRegionTag[]

Source code

//
// 8.5.5.2 ADDBA Request frame format
//
class Ieee80211AddbaRequest extends Ieee80211ActionFrame
{
    chunkLength = LENGTH_ADDBAREQ - B(4);
    category = 3; // category field set to 3 (representing Block Ack). (1 byte)
    blockAckAction = 0; // Block Ack Action field is set to 0 (representing ADDBA request). (1 byte)
    uint8_t dialogToken = 1; // Dialog Token field is set to a nonzero value chosen by the STA. (1 byte)

    // Block Ack Parameter Set field (2 bytes)
    bool aMsduSupported; // The A-MSDU Supported subfield determines whether an A-MSDU may be carried in a QoS data MPDU sent under this Block Ack agreement. (1 bit)
    bool blockAckPolicy; // The Block Ack Policy subfield is set to 1 for immediate Block Ack and 0 for delayed Block Ack. (1 bit)
    uint8_t tid; // The TID subfield contains the value of the TC or TS for which the BlockAck is being requested. (4 bits)
    uint16_t bufferSize; // The Buffer Size subfield indicates the number of buffers available for this particular TID. (10 bits)

    // Block Ack Timeout Value field (2 bytes)
    // The Block Ack Timeout Value field contains the duration, in TUs, after which the Block Ack setup is
    // terminated, if there are no frame exchanges (see 10.5.4) within this duration using this Block Ack
    // agreement. A value of 0 disables the timeout.
    simtime_t blockAckTimeoutValue;

    // Block Ack Starting Sequence Control (2 bytes)
    // The Starting Sequence Number subfield of the Block Ack Starting Sequence Control subfield contains the sequence number of the first MSDU for which this Basic
    // BlockAckReq frame is sent. The Fragment Number subfield is set to 0.
    uint8_t _fragmentNumber = 0; // FIXME: DataOrMgmtFreme has a fragmentNumber (4 bits)
    SequenceNumber startingSequenceNumber; // the sequence number of the first MSDU (12 bits)
}

File: src/inet/linklayer/ieee80211/mac/Ieee80211Frame.msg