CAREER: Opportunistic Middleware for Delay-Tolerant Networks

职业：延迟容忍网络的机会中间件

• 批准号: 0844850
• 负责人: Christine Julien
• 金额: $ 40万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0844850&HistoricalAwards=false
• 关键词: CAREER; Opportunistic; Middleware; Delay; Tolerant

0844850Christine JulienUniversity of Texas at AustinCAREER: Opportunistic Middleware for Delay-Tolerant NetworksDelay-tolerant networks are characterized by extreme unpredictability of connectivity due to disconnections between senders and receivers that often persist for long periods of time. This style of network has become increasingly important, largely due to emerging applications, such as enabling access to the Internet in remote areas, social networking, and mobile search and rescue. Existing solutions are generally tailored to very specific applications, instead of focusing on application properties in general. Intellectual Merit. This project uses applications' common characteristics to drive the development of coordination support for delay-tolerant networks by simplifying application development and providing an expressiveness that enables new classes of fluid and responsive applications. The project begins by developing an understanding of coordination in delay-tolerant networks by developing a theory of temporally extended conversations among communicating parties. To support these conversations, the research also examines the creation of new communication protocols that adapt their behavior in response to changing conditions, enabling the communication infrastructure to continue to meet applications' requirements, even as the network's operating conditions change. To support this adaptation, the project develops new notions of context-awareness, or the ability to collect and interpret information about an application's environment. The project ties these three components together to create an adaptive middleware for delay-tolerant networks that provides a software support system that enables application developers to use simple constructs to create expressive coordinating applications. Broader Impact. The project includes an education agenda that relies on these tangible applications for delay-tolerant networks to increase the accessibility of mobile computing to students and the public through hands-on demonstrations and course projects.

0844850克里斯汀在奥斯卡雷尔（Austincareer）的julienuniversity：用于延迟耐耐受性网络的机会主义中间件，耐耐受性网络的特征是由于发件人和接收器之间经常长时间持续存在的接收器之间的断开连接而引起的极端不可预测。 这种网络风格变得越来越重要，这主要是由于新兴应用程序，例如在偏远地区访问Internet，社交网络以及移动搜索和救援。现有的解决方案通常是针对非常特定的应用程序量身定制的，而不是一般关注应用程序属性。 智力优点。该项目使用应用程序的共同特征来通过简化应用程序开发并提供表达能力，从而推动对延迟耐受性网络的协调支持的开发，从而使新类别的流体和响应式应用程序提供了表现力。 该项目首先要通过发展沟通各方之间的时间扩展对话的理论来发展对延迟网络中的协调的理解。 为了支持这些对话，研究还研究了新的通信协议的创建，这些协议可以适应其行为，以应对不断变化的条件，从而使通信基础架构继续满足应用程序的要求，即使网络的运营条件发生了变化。 为了支持这种适应，该项目开发了上下文意识的新概念，或者可以收集和解释有关应用程序环境的信息的能力。 该项目将这三个组件联系在一起，为延迟耐受性网络创建自适应中间件，该网络提供了一个软件支持系统，使应用程序开发人员能够使用简单的构造来创建表现力的协调应用程序。 更广泛的影响。该项目包括一个依靠这些延迟耐受性网络的切实应用程序的教育议程，以通过动手演示和课程项目来提高学生和公众移动计算的可访问性。