802.11 wireless communication is half duplex based on CSMA-CA (Carrier Sense Multiple Access – Collision Avoidance) technique. Since it is not possible to detect collision over the air, this technique will try to prevent collisions. All the 802.11 stations like Access Points, wireless laptops, mobile phones, wireless printers, scanners etc. implement CSMA-CA for the mediumContinue reading “Chapter 1: CSMA-CA”