NeTS:Small:Collaborative Research:Holistic Transparent Performance Assurance within the Crowded Spectrum

NetS：小型：协作研究：拥挤范围内的整体透明性能保证

• 批准号: 0916994
• 负责人: Gang Zhou
• 金额: $ 20万
• 依托单位: College of William and Mary
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0916994&HistoricalAwards=false
• 关键词: NeTS; Small; Collaborative; Research; Holistic

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Cheap commercial off-the-shelf wireless devices are being increasingly deployed for performance-sensitive applications such as patient monitoring with body sensors and home networking for multimedia and gaming. However, wireless communications may interfere with each other when they use the same or adjacent radio frequencies. This becomes a growing issue as the public 2.4GHz spectrum is being populated by a variety of devices, including 802.11b/g routers, ZigBee sensors, Bluetooth headsets, and cordless phones. Existing interference mitigation schemes are tightly tied with the physical/MAC layers of particular platforms, and hence often cannot co-exist in the same network without sacrificing the system performance. This project develops a Holistic Transparent Performance Assurance (HTPA) framework to support performance-sensitive applications in the crowded spectrum. HTPA consists of 1) a spectrum profiler that models the spectrum usage and dynamic external, intra- and inter-platform interferences in heterogeneous wireless environments; 2) a virtualized medium access control layer that provides unified interfaces for transparently representing, monitoring, and scheduling the underlying radio resources; and 3) a stream and system performance assurance component that schedules radio resources for each individual data stream, and harnesses network interference based on the system knowledge, MAC abstractions, and dynamic spectrum models.HTPA enables network designers to systematically understand and mitigate the impact of complex interference that exist between heterogeneous wireless devices, and provides reference models for the standardization of future commercial wireless platforms operating in unlicensed spectrums.

该奖项的资助根据《2009 年美国复苏和再投资法案》（公法 111-5）进行。廉价的商用现成无线设备越来越多地部署用于性能敏感型应用，例如使用身体传感器进行患者监控以及用于多媒体和游戏的家庭网络。然而，当无线通信使用相同或相邻的射频时，它们可能会相互干扰。随着公共 2.4GHz 频谱被各种设备（包括 802.11b/g 路由器、ZigBee 传感器、蓝牙耳机和无绳电话）占用，这已成为一个日益严重的问题。现有的干扰减轻方案与特定平台的物理/MAC层紧密相关，因此通常无法在不牺牲系统性能的情况下共存于同一网络中。该项目开发了一个整体透明性能保证（HTPA）框架，以支持拥挤频谱中的性能敏感应用程序。 HTPA 包括 1) 频谱分析器，用于对异构无线环境中的频谱使用以及动态外部、平台内和平台间干扰进行建模； 2）虚拟化媒体访问控制层，提供统一的接口，用于透明地表示、监控和调度底层无线资源； 3) 流和系统性能保证组件，为每个单独的数据流调度无线电资源，并根据系统知识、MAC 抽象和动态频谱模型利用网络干扰。HTPA 使网络设计人员能够系统地了解和减轻异构无线设备之间存在的复杂干扰的影响，并为未来在免许可频谱中运行的商业无线平台的标准化提供参考模型。