Thomas Kunz
Systems and Computer Engineering
178
802.11 MAC Frame Format
nTypes
–control
frames, management frames, data frames
nSequence numbers
–important
against duplicated frames due to lost ACKs
nAddresses
–receiver,
transmitter (physical), BSS identifier, sender (logical)
nMiscellaneous
–sending
time, checksum, frame control, data
bytes
Frame
Control
Duration
ID
Address
1
Address
2
Address
3
Sequence
Control
Address
4
Data
CRC
2
2
6
6
6
6
2
4
0-2312
version, type, fragmentation, security, ...