ITR: System Support for Mobile Multimedia and Web Applications

具有无线功能的移动设备的日益普及对将有线互联网应用程序的功能扩展到无线领域提出了新的和根本性的挑战。该项目将研究基于代理的技术，以实现下一代移动多媒体和web应用程序。拟议的研究将侧重于移动环境的三个特征，即客户端移动性、间歇性连接和移动设备的资源贫乏性质。本项目将解决的研究问题包括(i)移动多媒体应用的电源友好型流技术和实时切换，以及（ii）移动网络应用访问时变和位置相关数据的缓存和传播。所提出的技术将使用仿真、分析和原型实现的综合方法进行评估。所提出的研究的意义源于移动设备的广泛和不断增长的使用，这些设备在互联网上提供无处不在的无线访问数据。这项研究的可能影响将是推动下一代移动多媒体和网络应用基于代理的基础设施的发展。

The growing popularity of mobile devices with wireless capabilitiesimposes new and fundamental challenges in extending the capabilitiesof wired Internet applications to the wireless domain. This project willinvestigate proxy-based techniques for enabling the next generation ofmobile multimedia and web applications. The proposed research will focus onthree characteristics of mobile environments, namely client mobility,intermittent connectivity, and resource-poor nature of mobile devices. Research issues that will be addressed in this project include(i) power-friendly streaming techniques and real-time handoffs formobile multimedia applications, and (ii) caching and dissemination oftime-varying and location-dependent data accessed by mobile webapplications. The proposed techniques will be evaluated using aneclectic mix of simulation, analysis and prototype implementation. Thesignificance of the proposed research arises from the widespread andgrowing use of mobile devices that provide ubiquitous, wireless accessto data on the Internet. The likely impact of this research will beto advance the state of the art in proxy-based infrastructures fornext-generation mobile multimedia and web applications.