Collaborative Research: NeTS-NBD: Construction of Robust and Efficient Disruption Tolerant Networks

合作研究：NeTS-NBD：构建鲁棒高效的抗干扰网络

• 批准号: 0519881
• 负责人: Brian Levine
• 金额: $ 75万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0519881&HistoricalAwards=false
• 关键词: Collaborative; Research; NeTS; NBD; Construction

Traditional networks, both wired and wireless, have the property that end-to-end paths between nodes are relatively stable. However, not all environments that require communication will allow the creation of stable end-to-end paths. For example, the aftermath of a severe earthquake disaster will include collapsed buildings, persons trapped in debris, damaged utilities and roads, as well as fires and secondary explosions. Under this situation, the ability to communicate, even at low rates, is extremely valuable for sharing vital information, such as the number and location of survivors and the activities of rescue workers. To provide communication in these challenged environments, the network protocols must be explicitly designed to perform despite frequent disruptions in the availability and performance of network components (i.e., links and nodes). The resulting systems are termed Disruption Tolerant Networks (DTNs).This work focuses on the construction of DTNs that go far beyond the task of finding unicast paths. Instead, these DTNs are robust under uncertainty and attack, and are highly efficient in their use of the node and link resources. Specifically, this project focuses on the following fundamental functions: group communication, single-hop transfers, and power management. The work is grounded by experimentation in testbeds at the collaborating universities. The project provides algorithms, protocols, and platforms to create robust and efficient DTNs enabling communication in the most critical of environments, as well as exposes cost-performance tradeoffs that might have broader applicability in less challenged networks.

传统的有线和无线网络都具有节点之间的端到端路径相对稳定的特性。但是，并不是所有需要通信的环境都允许创建稳定的端到端路径。例如，严重地震灾害的后果将包括倒塌的建筑物、被困在废墟中的人、受损的公用设施和道路，以及火灾和二次爆炸。在这种情况下，即使在低速率情况下，交流的能力对于分享重要信息，如幸存者的数量和位置以及救援人员的活动，也是极其宝贵的。为了在这些挑战环境中提供通信，网络协议必须明确地设计为在网络组件(即链路和节点)的可用性和性能频繁中断的情况下仍能执行。由此产生的系统被称为中断容忍网络(DTN)。这项工作的重点是构建DTN，它远远超出了寻找单播路径的任务。相反，这些DTN在不确定性和攻击下是健壮的，并且在节点和链路资源的使用方面是高效的。具体地说，该项目侧重于以下基本功能：群组通信、单跳传输和电源管理。这项工作的基础是在合作大学的试验床上进行的实验。该项目提供了算法、协议和平台，以创建强大而高效的DTN，从而在最关键的环境中实现通信，并揭示了在挑战较小的网络中可能具有更广泛适用性的性价比权衡。