Radio resource management in a reconfigurable wireless network

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The evolution of software radio has enabled wireless network devices to dynamically reconfigure their air interfaces. As a result, network protocols and resource management should fully exploit the advantages provided by this flexibility. Although extensive work has been done to enable network reconfiguration at the physical layer, little has been done to study issues related to quality of service (QoS) provisioning and resource management in a network where stations can dynamically reconfigure their air interfaces. In the proposed project we will study important issues in allocating radio resources for supporting multimedia services in reconfigurable wireless networks. The objective of this research is to provide solutions and technologies so that mobile stations can keep their traffic always best connected by dynamic and adaptive reconfigurations, and the precious radio resources can be efficiently utilized. Specifically, we will propose strategies for mobile stations to adaptively select their air interfaces, design admission control and transmission scheduling schemes for networks to effectively support the QoS of multimedia traffic, and provide solutions to ensure smooth connections during and after reconfigurations. The basic approach is to take into consideration both horizontal and vertical information in a reconfigurable network in order to optimize the resource allocation performance, where horizontal information comes from sub-networks using different air interfaces, and vertical information is from different layers of the network protocol stack. The outcomes of this research will contribute towards future always-best-connected networks and benefit network operators, mobile users, and equipment manufacturers. This work will benefit the Canadian telecommunication industry by attracting more investments in wireless networks and encouraging more mobile wireless users.