Design and Prototyping for Network Convergence

综合、混合和复杂系统华盛顿大学刘辉网络融合的设计和原型本研究的目标是开发新的网络架构，以实现数字广播和（双向）蜂窝数据网络的融合，同时提供多媒体分发所需的服务质量。研究方法是双管齐下的。第一个组件是协作蜂窝网络中本地支持混合服务的联合设计方法。研究的第二个组成部分是在扩展认知无线电（IEEE 802.22）框架内实现动态频谱重用的方法。智力优势：该项目解决了支撑下一代数字广播向宽带协作网络过渡的理论问题和相关系统设计问题。所讨论的问题与最近可获得的用于广播和新兴工业标准的新无线电频谱有关，例如MediaFlo和Mobile WiMAX，这些标准同样寻求实现这种融合的演进路径。该项目虽然不针对上述技术和标准，但旨在产生跨领域的商业影响。更广泛的影响：与传统的、孤立的无线网络相比，该研究寻求在融合网络中提供显著容量增益和频谱节省的新架构。这项工作不可或缺的是信息技术专业人员和科学家在通信和信息理论以及网络和实用无线系统设计方面的交叉培训。此外，研究人员计划将这项研究的结果传达给IEEE 802.22任务组，以供其考虑网络融合标准。

Integrative, Hybrid and Complex SystemsUniversity of WashingtonHui LiuDesign and Prototyping for Network ConvergenceThe objective of this research is to develop new network architectures for achieving convergence of digital broadcasting and (two-way) cellular data networks while delivering the quality-of-service necessary for multimedia distribution. The research approach is two-pronged. The first component is a joint design method for hybrid services to be natively supported in a collaborative cellular network. The second component of the research is a method for dynamic spectrum reuse within an extended cognitive radio (IEEE 802.22) framework.Intellectual Merit: This project addresses theoretical questions and associated system design issues underpinning the transition of next-generation digital broadcasting to broadband collaborative networks. The problems addressed are relevant to the recent availability of new radio frequency spectrum for broadcast and emerging industry standards, such as MediaFlo and Mobile WiMAX, that similarly seek an evolutionary path towards such a convergence. The project, while not specific to the above technologies and standards, is intended to result in cross-cutting commercial impact.Broader Impacts: The research seeks new architectures to provide significant capacity gains and spectrum saving in converged networks as compared to traditional, isolated wireless networks. Integral to this work is the cross-training of information technology professionals and scientists in communication and information theory as well as in networking and practical wireless system design. Further, the investigators plan to communicate results from this research to inform the IEEE Task Group 802.22 in its consideration of standards for network convergence.