Standar Layer Protocol 802

Before studying feebleness and make-up of security protocol 802.11, us have to know ahead construction layer of at protocol 802. Picture - 1 in the following is showing comparison layer of at protocol 802 model with OSI.

Function from physical layer is :

• Encoding/decoding Signal


• Transmission and receiver of Data beet

Function from Medium Access Control (MAC) layer is :

• In transmission, including data into frame with address and as error detection


• In Acceptance, cozening frame become data and address also as error detection

Function from Logical Link Control (LLC) layer is :

• As link to higher layer and [do/conduct] control of stream and error (mistake)

Arsitektur protocol 802.1

Architecture Protocol 802.11 shown by such as picture two in the following is :

Fundamental function at Medium Access Control (MAC) layer 802.11adalah :

• Data’s deliverer which reliable


• Controller of Data Access


• Security

Arsitektur Media Acces Control (MAC) Protocol 802.11

But of architecture Detail from frame Medium Access Control (MAC) 802.11 shown at picture three in the following is :

From frame MAC 802.11 above which need paid attention to by is function from frame control. Because from frame control of this is conducting the fundamental functions from MAC done inclusive of in the case of security.