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Item QoS in IEEE 802.16 Networks(UMT, Lahore, 2006) Sharjeel AftabIEEE 802.16 Wireless standard specifies a fixed point to multipoint broadband wireless access. IEEE 802.16 MAC provides extensive bandwidth allocation and (QoS) mechanisms for various types of applications. However, details of packet scheduling mechanisms for both downlink and uplink direction are left unspecified in the standard. The goal is to provide delay and bandwidth guarantees for various kinds of applications and to maintain fairness among various flows while still achieving high bandwidth utilization. This Thesis focuses on current version of QoS architecture of IEEE 802.16 and the results have been justified with the help of simulation to support requirements of all kinds of service flows specified in IEEE 802.16 standard.Item Routing and QoS Approaches for Mobile Ad Hoc Networks (MANETs)(UMT, Lahore, 2006) Farhan YousafThe popularity of wireless networks has significantly increased during the past few years. This increase in the popularity of wireless communication is due to the advancements in technology and growing availability of mobile devices like PDAs, laptops and cell phones. These days infra-structureless wireless networks have become an active field of communication and networking research due to their huge demand in the commercial market. The infra-structureless wireless networks are called Mobile Ad Hoc Networks (MANETs). An ad hoc network is a network of autonomous nodes that are self-organizing and self-configuring multi-hop networks that establish communication without any infrastructure support. Mobile ad hoc networks are also characterized by their special features such as dynamic topology, limited transmission range, absence of infrastructure, no centralized administration and a potential lack of security.