NeTS-NBD: Adaptive Application-Centered Communication in Mobile and Pervasive Computing

该项目通过紧密集成情景感知和通信来生成支持自适应应用的通信解决方案。具体地说，该项目专注于提供高效的上下文感知解决方案和自适应的应用感知通信。现有的上下文感知方法的一个重大缺陷是它们需要额外的网络通信来生成可靠的上下文测量。这个项目开发了被动上下文感知，其中关于环境状态的信息是使用通信协议已知的信息来推断的。为了使用这种被动的上下文感知来实现自适应的应用感知通信，该项目将上下文信息与应用程序要求结合到通信协议中，以动态更改行为并随后更改特定通信协议的有效性。具体地说，该方法动态调整动态路由协议的反应性和主动性，以考虑到上下文属性的变化。当为适应收集信息的开销能够保持在最低限度时，从适应中获得的好处可能是巨大的。该项目正是利用了这一设计点：将收集上下文信息的开销降低到接近零的水平，最大化了自适应通信协议可以实现的收益。广泛的影响：该项目的工作围绕普适计算展开，这使得该项目对学生和公众来说尤其容易获得和令人兴奋。具体的外展活动将不仅包括大学生，还将包括当地的初中生和社区成员，他们通过大学支持的计划。

This project generates communication solutions that support adaptive applications by tightly integrating context-awareness and communication. Specifically, the project focuses on providing efficient context sensing solutions and adaptive application-aware communication. A significant drawback of existing context sensing approaches is that they require additional network communication to generate reliable measures of context. This project develops passive context sensing, in which information about the state of the environment is inferred using information already known to communication protocols. To use this passive context sensing to enable adaptive application-aware communication, the project incorporates context information into communication protocols alongside application requirements to dynamically change the behavior and subsequently the effectiveness of particular communication protocols. Specifically, the approach dynamically adjusts the reactivity and proactivity of a dynamic routing protocol to account for changing context properties. When the overhead of gathering information for adaptation can be kept to a minimum, the benefits received from adaptation can be great. It is exactly this design point that this project exploits: reducing the overhead of collecting context information to near zero maximizes the payoffs adaptive communication protocols can achieve.Broader Impact: The fact that the project's work revolves around pervasive computing makes it especially accessible and exciting to students and the public. Specific outreach activities will include not only university students but local middle and high school students and community members through university supported programs.