In the past decade, as cell phone redefined our expectation for communication, wireless commmunication has taken us one step further to connect with the world and led to a true global village. Information, data and images could be retried in real-time, voice implementation has brought families, friends and cooperations closer than never.

When the need for information increases, wireless communication has inevitably become the center of focus, as most of the developing countries are moving in urgent paces to catch up with the information technology. Consequenty, wireles communication has become an economical and fast solution for delivering internet services to your door, as compared with the traditional, cumbersom and expensive piping and cabling of a wired network. 

This has led us to Wi-Fi(Wireless Fidelity) Technology. Currently, IEEE802.11-based standards including a, b, g, and n are usually applied in the normadic networks for point to point and point to multipoints applications. The common applications of such applicatiosn are found int he WISP in small areas, coffee shops, hotspot zones, residents or business areas where people have simple and quick-to-configure(mostly zero configuration) internet access devices.