802.11 Mgmt : Association Req/Response
When 802.11 authentication (not the RSN-WPA/WPA2 authentication) completes, a STA move to Association phase to the BSS. The purpose of …
Category Archives: CWAP
CWAP 802.11- Probe Request/Response
Discovering the network by scanning all possible channels & listening to beacons is not considered to be very efficient (passive …
CWAP – 802.11 Ctrl : RTS/CTS
RTS (Request to Send) & CTS (Clear to Send) frames are used to enhance the virtual carrier sense process. It …
CWAP – MAC Header : Duration/ID
Duration/ID field is 2 bytes(16bits) long field in the 802.11 MAC header. Here is the 16 bit of Duration/ID fieldIn …
CWAP – HT Control Field
The 802.11n amendment add a 4 byte HT control field to the 802.11 MAC header. With this HT Control field …
CWAP – HT Capabilities IE
802.11n introduces 4 new information elements which can be seen in 802.11n (HT) beacon frames. HT STAs declare themselves as …
CWAP – 802.11n Introduction
802.11n-2009 (HT-Clasue 20) amendment was ratified on September 2009, essentially a list of enhancement to improve the performance & throughput …
CWAP – Spectrum Analysis
WiFi Spectrum Analyzer considerations – Frequency – Form factor – Price – Hardware Platform – Resolution – Supporting Software – …
CWAP – 2.4GHz vs 5GHz
2.4GHz (2.4000 GHz to 2.4835 GHz) – 802.11 (FHSS clause 14 or DSS clause 15 radios) – 802.11b (HR-DSSS clause …
CWAP 802.11 PHY – PPDU
802.11 Physical (PHY) layer is divided into two sublayers 1. PLCP (Physical Layer Convergence Procedure) sublayer 2. PMD (Physical Medium …
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