Radio resource management in a reconfigurable wireless network

软件无线电的发展使得无线网络设备能够动态地重新配置它们的空中接口。因此，网络协议和资源管理应该充分利用这种灵活性所提供的优势。虽然已经做了大量的工作来实现物理层的网络重新配置，但是在站点可以动态地重新配置其空中接口的网络中研究与服务质量(Qos)供应和资源管理相关的问题的工作很少。在拟议的项目中，我们将研究在可重构无线网络中分配无线电资源以支持多媒体服务的重要问题。这项研究的目的是提供解决方案和技术，使移动台能够通过动态和自适应的重新配置来保持其业务的最佳连接，并有效地利用宝贵的无线资源。具体地说，我们将提出移动台自适应地选择其空中接口的策略，设计网络的接纳控制和传输调度方案，以有效地支持多媒体业务的服务质量，并提供解决方案，以确保在重新配置过程中和重新配置后的平稳连接。基本方法是在可重构网络中同时考虑水平和垂直信息，以优化资源分配性能，其中水平信息来自使用不同空中接口的子网络，而垂直信息来自网络协议栈的不同层。这项研究的结果将有助于未来始终实现最佳连接的网络，并使网络运营商、移动用户和设备制造商受益。这项工作将吸引更多的无线网络投资并鼓励更多的移动无线用户，从而使加拿大电信业受益。

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.