WPA3 Opportunistic Wireless Encryption – frame format – Basics
New Wi-Fi Enhanced Open™ technology infuses no-hassle advanced cryptography for open networks We’ve all come to expect fast, reliable, and […]
Category: 802.11
OFDM review/basics as a baseline for understadning WIFI 6/802.11ax – part 1
How will 802.11ax change the wireless space? In order to understand how the standard will move forward an understanding of […]
BLOCK ACK
Block Acknowledgment In the 802.11 MAC as it was originally specified in 1997, every frame required a positive acknowledgment. Each […]
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 […]
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 […]
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 […]
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 […]
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 […]
802.11 Frames
Management Frames 802.11 management frames make up a majority of the frame types in a WLAN. Management frames are used […]
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 […]