Disaster Area Wireless Network

灾区无线网络

• 批准号: 0725801
• 负责人: Hazem Refai
• 金额: $ 29.98万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0725801&HistoricalAwards=false
• 关键词: Disaster; Area; Wireless; Network

Integrative, Hybrid and Complex SystemsHazem H. RefaiUniversity of OklahomaDisaster Area Wireless NetworkIntellectual Merit: The objective of this research is to design a quickly deployable, reliable communication infrastructure for reestablishing communication following a disaster. Such a disaster area wireless network (DAWN) would provide much needed communication for coordinating relief and recovery efforts until normal communication channels can be reestablished. The DAWN infrastructure is based on network nodes deployed on balloons that are tethered to the ground. Each node utilizes free-space optical (FSO) and radio frequency (RF) links to construct a hybrid network between balloons and between balloons and the ground. To realize such a system, this research investigates: (i) viable mechanisms for physical layer connectivity between balloons using FSO links that consider link acquisition and maintenance; (ii) receiver access control (RAC) protocols to allow sharing of receivers among multiple FSO nodes; (iii) routing algorithms and methods for topology design to realize a self-configuring FSO ring topology with an RF link for inter-nodal communications and backup capacity when the FSO links are unavailable; (iv) aggregation of multiple wireless local area network signals into a single FSO signal and extraction of signals for transmission to ground; (v) techniques to balance power and weight to increase battery life and meet balloon payload requirements; and (vi) methods to provide ample coverage of ground-based nodes and reliable connectivity to existing terrestrial networks. A combination of experimental research and theoretical modeling will be utilized.Broader Impacts: If successful, this research will lead to methods to realize rapidly deployable, cost-effective communication systems that facilitate coordination between law enforcement and public safety agencies responding to natural and manmade disasters. Additional applications include airborne internet access and battlefield communications. Experiments are planned for adoption in two ongoing engineering and science summer academies for middle and high school students and teachers. The investigators will engage undergraduates in research and will leverage existing relationships to recruit undergraduates from underrepresented groups to participate.

集成、混合和复杂系统。RefaiUniversity of OklahomaDisaster Area Wireless NetworkIntellectual Merit：本研究的目标是设计一种可快速部署的可靠通信基础设施，用于在灾难发生后重建通信。 这样一个灾区无线网络（DAWN）将为协调救灾和恢复工作提供急需的通信，直到能够重新建立正常的通信信道。 DAWN基础设施基于部署在系留到地面的气球上的网络节点。 每个节点利用自由空间光（FSO）和射频（RF）链路在气球之间以及气球与地面之间构建混合网络。 为了实现这样一个系统，本研究调查：（i）可行的机制之间的物理层连接气球使用FSO链路，考虑链路捕获和维护：（ii）接收器访问控制（RAC）协议，允许共享接收器之间的多个FSO节点;（iii）用于拓扑设计的路由算法和方法，以实现具有RF链路的自配置FSO环形拓扑，当FSO链路不可用时，节点通信和备用容量;（iv）将多个无线局域网信号聚合成单个FSO信号，并提取信号以传输到地面;（v）平衡功率和重量以增加电池寿命并满足气球有效载荷要求的技术;以及（vi）提供地面节点的充分覆盖和与现有地面网络的可靠连接的方法。 更广泛的影响：如果成功，这项研究将导致实现快速部署，成本效益高的通信系统，促进执法和公共安全机构之间的协调，应对自然和人为灾害的方法。 其他应用包括机载互联网接入和战场通信。 计划在两个正在进行的面向初中和高中学生和教师的工程和科学暑期学院进行实验。 研究人员将让本科生参与研究，并将利用现有的关系，从代表性不足的群体中招募本科生参与。