Structure of the IEEE 802.11 MAC Sub-layer Frame
The IEEE 802.11 MAC sub-layer protocol structure follows the IEEE LMSC model, and thus has no higher-layer protocol demultiplexing features of its own. Therefore, the IEEE 802.11 MAC sub-layer protocol relies on the LLC sub-layer[5] headers to perform the higher layer protocol de-multiplexing function.
[5] The LLC sub-layer consists of the LLC sub-layer protocol, and optionally the SNAP sub-layer protocol.
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Besides defining the format of a MAC-layer frame, the IEEE 802.11 MAC sub-layer protocol specification must also define the means by which stations gain access to and share the medium, such that it is shared as fairly as possible. Once a wireless station (frequently abbreviated as “STA” in the ... |
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