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The IEEE standard 802.16 and its evolutions (i.e., 802.16- 2004, 802.16e, 802.16g) set the stage for a worldwide revolution in Broadband Wireless Access (BWA). Also known as WiMAX (Worldwide Interoperability for Microwave Access), IEEE 802.16-based technology can potentially deliver fixed, portable and mobile wireless solutions enabling high-bandwidth services with an array of multimedia features, and it supports point-to-multipoint (PTM) and mesh network architectures. With advantages in terms of high transmission rate and coverage area, mobility support, and a predefined quality of service (QoS) framework, this IP-based wireless broadband technology can be integrated with 3G mobile networks, 802.11-based WLANs, and wire line networks to provide seamless broadband connectivity to fixed and mobile users. While third-generation (3G) networks are optimized mostly for voice and data services with emphasis on mobility capability, 802.16-2004-based WiMAX networks are optimized for providing high peak rate multimedia services mainly for stationary end users. Operating in the frequency band of 2–6 GHz, 802.16e can serve the needs of fixed, nomadic, and fully mobile networks [1]