International Journal of Computer & Organization Trends(IJCOT)
IEEE 802.11 specifies a set of protocols for a wireless LAN defined by IEEE which covers the physical and data link layer. Now-a-days, IEEE 802.11 based WLAN has a widespread and providing wireless connectivity to several electronic devices like cell phones, laptops, gaming devices and so on. All these devices operate on the same medium and contend with each other in order to access the medium. All devices using the IEEE 802.11 Standard adopt a basic MAC scheme called the Distributed Coordination Function (DCF) whose key function is contention resolution.