Broadband Wireless Access (BWA) has emerged as a promising solution for last mile access technology to provide high speed internet access. At this moment, cable and Digital Subscriber Line (DSL) technologies are providing broadband services. But the practical difficulties in deployment have prevented them from reaching many potential broadband internet customers. Many areas throughout the world currently are not under broadband access facilities. Especially a developing country like India even many urban and suburban locations may not be served by DSL connectivity. WiMax is one of the next generation wireless networking standard provides a cost effective solution for wireless network ensuring QoS.