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给将有线互联网应用的能力扩展到无线领域带来了新的和根本的挑战。该项目将研究基于代理的技术，以支持下一代移动多媒体和网络应用。拟议的研究将集中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)移动多媒体应用的功耗友好的流媒体技术和实时切换，以及(Ii)移动Web应用访问的时变和位置相关数据的缓存和分发。建议的技术将通过模拟、分析和原型实现的折衷组合进行评估。提出这项研究的意义在于移动设备的广泛使用和日益增长，这些移动设备提供无处不在的、无线的互联网数据访问。这项研究的可能影响将是推进下一代移动多媒体和网络应用的基于代理的基础设施的技术水平。

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.