NetSE: Large: Urban-Scale Polymorphic Wireless Networks: Community-Driven Assessment, Design, and Access

知识价值。这个项目会发展世界吗？美国首个城市多态无线接入网，一个可以在移动中彻底改变其基本属性的网络。关键的一步是部署基础设施和客户端节点，这些节点可以访问从MHz到GHz的各种频谱范围。这种独特的频谱接入能力使我们能够重新审视网络评估、设计和接入的基础。这种实验性的方法利用了休斯顿城市社区中前所未有的机会：在Pecan Park，一个服务不足的社区，项目团队将担任研究人员，无线网络服务提供商，网络设备和协议设计师，以及社区技术教育者和倡导者。通过使用这个城市测试平台的协调努力，该项目解决了以下三个相互关联的研究重点：CACTUS：社区和技术使用的横截面评估；开发首个同类网络评估工具，将三种新方法与现有网络跟踪收集功能集成在一起；(i)从使用和对集体利益贡献的角度对社区技术无线接入目标进行社会学评估；（ii）通过最终用户报告进行现场用户体验评估；（iii）由网络运营商远程实例化的并发现场客户端性能测试。PAWN：无线网络的多态架构：采用城市部署节点，可以访问数字电视空白空间范围内从5 GHz到500 MHz的频谱，该项目将(i)基于社区目标和使用评估，开发动态网络架构的基础和工具；（ii）为？绿色无线?节能架构，使低使用率节点断电，但通过频谱适应保持覆盖范围；（iii）为频谱驱动的移动性管理开发基础和工具，其中高度移动的客户端利用具有大空间足迹的节点（通过低频谱范围实现）来获得以前不可能实现的性能-速度剖面。CODA：上下文驱动的网络访问：利用CACTUS和上下文感知，该项目将(i)开发上下文驱动的多态无线网络当前和未来关联选择的质量评估，并为客户设计客户导向的策略，以优化关联的效率、性能和移动性；（ii）设计并实现一种多态聚合网络接口，动态聚合来自多个频谱带的多个网络接口的数据包。利用这种机制和上下文感知，我们将研究客户端的接口选择和流量分配，以前所未有的效率获得其所需的性能。更广泛的影响。该项目具有很强的跨学科性质，将开发新的研究方法，并为无线网络和社会科学领域提供基础研究成果。在低收入社区的部署为其居民提供了获取信息技术的途径。它将为未来在其他城市社区（包括国内和国际上服务不足的社区）部署无线基础设施提供经验和见解。数字电视空白空间的独特用途可以指导FCC未来的政策决策。该项目将为来自不同学科的本科生和研究生提供研究机会。它还将产生教育内容，可以显著丰富我们在多个学科的课程。该项目将继续产生已被全世界研究人员利用的公开可用的数据集。这些数据集的独特之处在于，它们为从最终用户到网络的所有系统组件提供了前所未有的访问。

Intellectual Merit. This project will develop the world?s first urban polymorphic wireless access network, a network that can radically transform its basic properties on-the-fly. A key step is deployment of infrastructure and client nodes that can access diverse spectral ranges spanning from MHz to GHz. This unique capability in spectrum access enables revisiting the foundations of network assessment, design, and access. This experimental approach capitalizes on an unprecedented opportunity in an urban community within Houston: In Pecan Park, an underserved community, the project team will serve as researchers, the wireless network service provider, the network equipment and protocol designers, and community-technology educators and advocates. In a coordinated effort using this urban testbed, the project addresses the following three inter-related research thrusts:CACTUS: cross sectional assessment of community and technology usage: development of a first-of-its-kind network assessment tool that integrates three new methods with existing network trace collection capabilities: (i) sociological assessment of community-technology wireless access objectives from perspectives of both usage and contribution to a collective good; (ii) in-situ user experience assessment via end-user reporting; and (iii) concurrent in-situ client performance tests instantiated remotely by the network operator.PAWN: polymorphic architecture for wireless networks: employing an urban deployment of nodes that can access spectrum spanning an order of magnitude from 5 GHz to 500 MHz in the Digital TV white spaces range, the project will (i) develop foundations and tools for dynamic network architecture based on assessment of community objectives and usage; (ii) develop foundations and tools for ?green wireless,? energy-efficient architectures which power down low-usage nodes but retain coverage through spectrum adaptation; and (iii) develop foundations and tools for spectrum-driven mobility management, in which highly mobile clients exploit nodes with large spatial footprints (enabled by low spectral ranges) to obtain a performance-velocity profile that was previously impossible.CODA: context-driven network access: exploiting CACTUS and context awareness, the project will (i) develop context-driven quality estimation of current and future association choices to a polymorphic wireless network and devise client-directed policies for a client to optimize efficiency, performance, and mobility of association; and (ii) design and realize a polymorphic aggregate network interface that dynamically aggregates packets from multiple network interfaces of multiple spectral bands. Using this mechanism and context-awareness, we will study interface selection and traffic allocation for a client to obtain its required performance with unprecedented efficiency.Broader Impact. With a strong interdisciplinary nature, this project will develop new research methods and yield foundational findings for areas spanning wireless networking to social sciences. The deployment in a low-income community provides access to information technologies for its residents. It will produce lessons and insights for future deployments of wireless infrastructures in other urban communities, including underserved ones, both nationally and internationally. The unique use of DTV white spaces can guide future FCC policy decisions. The project will provide research opportunities for undergraduate and graduate students from a variety of disciplines. It will also produce educational content that can significantly enrich our curricula in multiple disciplines. The project will continue to produce publicly available data sets that have already been utilized by researchers world-wide. The data sets are unique in that they provide unprecedented access to all system components from the end-user to the network.