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Category: 802.11

September 9, 2017July 30, 2020802.11

Frame Changes 802.11n

The 802.11 data frame is only slightly changed by 802.11n. Figure 5-1 shows the format of an 802.11 Data frame […]

August 30, 2017July 30, 2020802.11

802.11 PHY Layer – Carrier Sense/Clear Channel Assessment (CS/CCA)

Carrier Sense/Clear Channel Assessment (CS/CCA) If the station is not currently transmitting or receiving, it listens and senses the channel […]

August 27, 2017July 30, 2020802.11

802.11 MAC Sublayer format

General 802.11 MPDU Format The technical term for an 802.11 frame is an 802.11 MAC Protocol Data Unit (MPDU) MAC […]

August 27, 2017July 30, 2020802.11

802.11 – Step Back Review

Direct sequence spread spectrum (DSSS) PHY specification for the 2.4 GHz band designated for ISM applications The DSSS system provides […]

August 27, 2017July 30, 2020802.11

802.11 Association Status Codes & Codes

802.11 Association Status Codes Code 802.11 definition Explanation 0 Successful 1 Unspecified failure For example : when there is no […]

August 27, 2017July 30, 2020802.11

802.11 Frames

Management Frames 802.11 management frames make up a majority of the frame types in a WLAN. Management frames are used […]

August 27, 2017July 30, 2020802.11

OSI model – 802.11

Data-Link Layer The 802.11 Data-Link layer is divided into two sublayers: The upper portion is the IEEE 802.2 Logical Link […]

August 27, 2017July 30, 2020802.11

MAC architecture

DCF The fundamental access method of the MAC used by 802.11 devices is a distributed coordination function  (DCF) known as […]

August 25, 2017July 30, 2020802.11

802.11 Frame

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