NeTS: Small: Addressing Research Challenges in Low-Duty-Cycle Wireless Sensor Networks

NeTS：小型：解决低占空比无线传感器网络的研究挑战

• 批准号: 0917097
• 负责人: Tian He
• 金额: $ 32.76万
• 依托单位: University of Minnesota-Twin Cities
• 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: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0917097&HistoricalAwards=false
• 关键词: NeTS; Small; Addressing; Research; Challenges

Energy-efficient wireless communication is critical for long-term sensor network applications, such as military surveillance, habitat monitoring and infrastructure protection. To reduce the energy costs of RF listening, a node has to reduce its duty-cycle by sampling wireless channels very briefly and shutting down for long periods. Consequently, the connectivity of low-duty-cycle networks becomes time-dependent. Previous research in this type of networks predominately focused on physical and link-layer designs. This project is positioned to provide significantly added value to these earlier successful research by conducting the first systematic research at the network layer for low-duty-cycle communication under a wide spectrum of network configurations covering a large design space. The key research challenge addressed by this project is to optimize networking performance (e.g., delay, reliability, and cost) in the presence of sleep latency and other practical considerations including (i) unreliable links, (ii) dynamic energy availability, and (iii) mobility. With a successful outcome from this project, long-term sensor applications can be supported by low-duty-cycle networking technologies, leading to significantly reduced costs in development, deployment, and maintenance. These applications, in turn, can improve the safety of transportation, the quality of education and learning, and the development of innovations in many scientific frontiers. This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).

高能效的无线通信对于传感器网络的长期应用至关重要，例如军事监视、栖息地监测和基础设施保护。为了降低射频监听的能量成本，节点必须通过对无线信道进行非常短暂的采样并长时间关闭来降低其占空比。因此，低占空比网络的连通性变得依赖于时间。以前对这类网络的研究主要集中在物理层和链路层设计上。该项目旨在为这些早期的成功研究提供显著的附加值，通过在网络层进行第一次系统研究，在覆盖大设计空间的广泛网络配置下进行低占空比通信。该项目解决的关键研究挑战是在存在休眠延迟和其他实际考虑因素的情况下优化网络性能(例如延迟、可靠性和成本)，包括(I)不可靠的链路、(Ii)动态能量可用性和(Iii)移动性。随着该项目的成功，长期传感器应用可以得到低占空比网络技术的支持，从而显著降低开发、部署和维护成本。这些应用反过来又可以改善交通安全、教育和学习质量以及许多科学前沿领域的创新发展。该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)提供资金的。