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 Christine Julien德克萨斯大学奥斯汀分校职业生涯：延迟容忍网络的中间件延迟容忍网络的特点是连接的极端不可预测性，这是由于网络和接收器之间的断开连接通常会持续很长一段时间。 这种类型的网络已变得越来越重要，这主要是由于新兴的应用，例如使偏远地区能够接入互联网、社交网络以及移动的搜索和救援。现有的解决方案通常针对非常特定的应用程序进行定制，而不是一般地关注应用程序属性。 智力优势。该项目使用应用程序的共同特征，通过简化应用程序开发并提供支持新的流体和响应应用程序的表现力，来推动对延迟容忍网络的协调支持的开发。 该项目首先通过开发通信方之间的时间扩展对话的理论来理解延迟容忍网络中的协调。 为了支持这些对话，该研究还研究了新通信协议的创建，这些协议可以根据不断变化的条件调整其行为，使通信基础设施能够继续满足应用程序的要求，即使网络的运行条件发生变化。 为了支持这种适应，该项目开发了上下文感知的新概念，或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，为延迟容忍网络创建一个自适应中间件，该中间件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结构来创建表达协调应用程序。 更广泛的影响。该项目包括一个教育议程，依靠这些延迟容忍网络的有形应用程序，通过动手示范和课程项目，增加学生和公众使用移动的计算的机会。