Ieee80211AddbaRequest¶

//
// 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)
    SequenceNumberCyclic startingSequenceNumber; // the sequence number of the first MSDU (12 bits)
}