Chapter 9

802.11 MAC Architecture

In this chapter, you will learn about the following:

Packets, frames, and bits

Data-Link layer

MAC Service Data Unit (MSDU)

MAC Protocol Data Unit (MPDU)

Physical layer

PLCP Service Data Unit (PSDU)

PLCP Protocol Data Unit (PPDU)

802.11 and 802.3 interoperability

Three 802.11 frame types

Management frames

Control frames

Data frames

Beacon management frame (beacon)

Passive scanning

Active scanning

Authentication

Open System authentication

Shared Key authentication

Association

Authentication and association states

Basic and supported rates

Roaming

Reassociation

Disassociation

Deauthentication

ACK frame

Fragmentation

Protection mechanism

RTS/CTS

CTS-to-Self

Data frames

Power management

Active mode

Power Save mode ...

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