CAREER: Leveraging Simultaneous Access to Multiple Frequency Bands in Multihop Wireless Networks

职业：在多跳无线网络中同时访问多个频段

• 批准号: 1150215
• 负责人: Joseph Camp
• 金额: $ 33.89万
• 依托单位: Southern Methodist University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-02-15 至 2018-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1150215&HistoricalAwards=false
• 关键词: CAREER; Leveraging; Simultaneous; Access; Multiple

Due to the culmination of the recent reapportionment of FCC frequency bands and the acceleration of wireless device complexity, simultaneous access to multiple diverse wireless frequency bands is becoming more of a reality. Naturally, the question arises: How can simultaneous access to a wide range of frequency bands with distinct propagation and communication capabilities improve current wireless network performance? In this CAREER research, a foundation is laid for exploiting multiple frequency bands for multihop wireless networks from per-link to network-wide decisions. To do so, this project uses experimental design, measurement analysis, analytical modeling, and embedded programming on an array of devices and testbeds from mobile phones globally reachable via application downloads to in-lab and in-the-field wireless infrastructures.There are three key innovations to the work: 1) An experimental characterization for multiple frequency band propagation characteristics by leveraging mobile phone measurements and in-field trials on a number of frequency bands, 2) A network planning framework for scalable, multiband architectures that uses empirical and analytical models for capacity prediction of heterogeneous topological formations across a diverse set of frequency bands, and 3) Protocols that coordinate and adapt link parameters across multiple wireless frequency bands, guided by real-time measurements of channel variability, an understanding of environmental context, and on-line training based on historical performance. As a result of work, multihop wireless network researchers, developers, and infrastructure providers can leverage the framework to exploit multiple frequency bands in a broad class of network protocols, topologies, and environments via available experimental data, analytical model development, and protocol design.

由于最近 FCC 频段的重新分配和无线设备复杂性的加速，同时访问多个不同的无线频段正变得越来越现实。自然地，问题就出现了：同时访问具有不同传播和通信能力的广泛频段如何提高当前无线网络的性能？在这项职业研究中，为利用多跳无线网络的多个频段（从每个链路到全网络决策）奠定了基础。为此，该项目在一系列设备和测试台上使用实验设计、测量分析、分析建模和嵌入式编程，这些设备和测试台可通过全球范围内的手机通过应用程序下载到实验室和现场无线基础设施进行访问。共有三个这项工作的关键创新点：1) 通过利用手机测量和对多个频段的现场试验，对多频段传播特性进行实验表征，2) 使用经验和分析的可扩展、多频段架构的网络规划框架异构容量预测模型3) 跨多个无线频段协调和调整链路参数的协议，以信道变化的实时测量、对环境背景的理解以及基于历史数据的在线训练为指导表现。通过工作，多跳无线网络研究人员、开发人员和基础设施提供商可以利用该框架，通过可用的实验数据、分析模型开发和协议设计，在广泛的网络协议、拓扑和环境中开发多个频段。