The IEEE 802.16e standard, introduced as one of the Wireless Metropolitan Area Networks (WMAN) for Broadband Wireless Access (BWA), provides a solution that replaces the existing Wireless Local Loop (WLL) with performance comparable to traditional DSL, T1 systems, DSL, etc. The IEEE 802.16e aims to provide broadband wireless last mile access in a Metropolitan Area Network, offering easy deployment, high-speed data rate, and an expanded area of coverage. The IEEE 802.16e supports real-time multimedia application services like IPTV, the broadcast of live events, voice-over internet protocols (VOIP), faster file transfer, and data services. Support for this array of applications comes from advanced antenna technologies like Multiple Input Multiple Output (MIMO), Orthogonal Frequency Division Multiple Access (OFDMA), and Adaptive Modulation and Coding (AMC). The requirements of diverse channel characteristics and the varying traffic flows of users have motivated the design and implementation of better Medium Access Layer (MAC) protocols that effectively utilize diminishing radio bandwidth. The goal of our thesis is to optimally utilize scarce radio resources by providing the most advantageous bandwidth allocation to existing users, along with multi-rate services with multiple traffic flows, maximize the number of users, and provide a superior Quality of Service (QoS) for real-time applications. The existing standard provides limited QoS capabilities for various applications. We have developed an efficient IEEE 802.16e QoS architecture to improve the system performance.
