International Journal of Computer Applications
"The IEEE has standardized the 802.11 protocol for wireless local area networks. The primary Medium Access Control (MAC) technique of 802.11 is called Distributed Coordination Function (DCF). DCF is a Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) scheme with Binary Exponential Backoff algorithm (BEB). DCF describes two techniques to employ for packet transmission: the two-way handshaking technique called basic access mechanism and an optional four way handshaking technique, known as Request-To-Send/ Clear-To-Send (RTS/CTS) mechanism."