Multi-tier mobile resource management for broadband wireless communication

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Overwhelmed by an ever increasing number of constantly upgraded smart phones and mobile devices, the 3G wireless systems current being deployed in Canada and around the world are already showing strain in keeping pace with the growth of data-hungry multimedia applications. The 4G wireless standards currently under development promise great increases in the wireless data rate, at 100 Mbps to 1 Gbps for a variety of mobile and stationary users. This is achieved by utilizing a new multi-tier network architecture, where multiple levels of overlapping cells of different sizes and capacities co-exist to provide universal broadband services. In contrast to recent proposals of networking design with heterogeneous wireless technologies, such as the 3G-WLAN integration, this new 4G architecture allows the same licensed spectrum across different tiers to provide more efficient network control and seamless user experience. There is a body of growing recent research efforts in heterogeneous networking, but most have not considered the new challenges in the current 4G paradigm or provided sound design guidelines based on rigorous mathematics. The main goal of the proposed research program is to create new theories and technologies toward a holistic cross-layer approach for optimal resource management in the 4G multi-tier environment. A special focus will be placed on developing careful mathematical modeling and analysis frameworks for the new system, leading to original insights and innovative solutions. We will investigate into mobility modeling, admission control, and transmission data rate adaptation in the new multi-tier framework. The outcomes of this program are expected to bring substantial advances toward new standards and design policies for future wireless communication networks. It will also enable the training of telecommunication researchers and engineers for sustained development of the Canadian high-tech economy.