Design and Prototyping for Network Convergence

综合、混合和复杂系统华盛顿大学刘辉为网络融合设计和原型这项研究的目标是开发新的网络体系结构，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。第一个组件是用于在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一种在扩展认知无线电(IEEE 802.22)框架内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的系统设计问题。所解决的问题与最近可用于广播的新无线电频谱以及MediaFlo和Mobile WiMAX等新兴行业标准有关，这些标准同样寻求一条实现这种融合的渐进道路。该项目虽然不特定于上述技术和标准，但旨在产生横切的商业影响。广泛的影响：与传统的孤立无线网络相比，该研究寻求新的架构，以在融合网络中提供显著的容量提升和频谱节约。这项工作的组成部分是在通信和信息理论以及网络和实用无线系统设计方面对信息技术专业人员和科学家进行交叉培训。此外，研究人员计划将这项研究的结果传达给IEEE任务组802.22，以便其考虑网络融合的标准。

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.