Cross-layer design and optimization for next generation wireless networks

近年来无线通信的发展表明，无线网络中各层之间的相互作用起着重要的作用，由于无线网络的固有特性，跨层设计是必要的。虽然在无线网络的跨层设计方面已经做了一些工作，但以前的大部分工作都集中在单一的空中接口标准上，如蜂窝网络。然而，在下一代无线网络中，无线设备将配备多个无线收发器，用于不同的空中接口标准，以满足广域网、局域网和个人区域无线网络的不同需求。此外，人们对下一代无线网络的认知无线电兴趣激增，在这种网络中，无线设备可以感知其环境并适应多种传输协议的许多频段。在此框架中，需要考虑不同空中接口标准中不同层的相互作用，以开发高效和有效的算法来优化集成无线网络的性能，这提出了重大的技术挑战。本研究计划的目标是在此框架的基础上解决重要的研究问题。我们的长期目标是通过物理、数据链路、网络、传输和应用层的空中接口共同研究具有认知智能的无线网络。这项工作的研究方法将采用数学建模和分析技术来评估新方案的有效性。我们还将通过进行实验实施和评估来确定我们方案的实用性。拟议的工作将有助于下一代及以后无线网络技术的进步。工作产生的一些技术和技术可能会影响新兴技术标准的演变或导致新技术标准的发展。有些结果可能适合商业化。拟议的研究也将有助于培训信息技术、通信和无线网络领域的高素质人员。

Recent advances in wireless communications show that the interactions of different layers play an important role in wireless networks, and cross-layer design is necessary due to the intrinsic characteristics of wireless networks. Although some work has been done for cross-layer design in wireless networks, most of previous work concentrates on a single air interface standard such as a cellular network. However, in next generation wireless networks, wireless devices are equipped with multiple wireless transceivers for different air interface standards to satisfy the different needs for wide area, local area and personal area wireless networks. Moreover, there has been an explosion of interest in cognitive radio for next generation wireless networks, in which wireless devices can sense their environment and adapt to many frequency bands with multiple transmission protocols. In this framework, the need to consider the interactions of different layers in different air interface standards to develop efficient and effective algorithms that optimize the performance of the integrated wireless networks presents significant technical challenges. The objectives of this research proposal are to address important research problems based on this framework. Our long-term goal involves the study of wireless networks with cognitive intelligence over the air interface jointly across physical, data-link, network, transport and application layers. The research methodology of the work will employ mathematical modeling and analysis techniques to evaluate the effectiveness of the novel schemes. We will also ascertain the practicality of our schemes by pursuing experimental implementations and evaluations. The proposed work will contribute to the advancement of wireless networking technologies through the next generation and beyond. Some of the technologies and techniques resulting from the work may impact the evolution of emerging technical standards or lead to the development of new technical standards. Some results may be suitable for commercialization. The proposed research will also contribute to the training of highly qualified personnel in the information technology, communications and wireless networks fields.