RUI/CSR-PDOS: Cooperative Prefetching for Mobile Devices

RUI/CSR-PDOS：移动设备的协作预取

• 批准号: 0509095
• 负责人: Sami Rollins
• 金额: $ 16.69万
• 依托单位: Mount Holyoke College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-06-15 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0509095&HistoricalAwards=false
• 关键词: RUI; CSR; PDOS; Cooperative; Prefetching; RUI; CSR; PDOS; Cooperative; Prefetching

A fundamental challenge for many mobile computing applications is datamanagement. Data should be available anywhere at anytime. However,this task is particularly difficult to support with respect tomanaging a user's personal data (e.g., data files, email, and cachedweb pages) across a collection of personal devices (e.g., a laptop,PDA, and mobile phone). Two properties of the mobile environment makedata management particularly challenging: network disconnection anddevice resource constraints, particularly energy constraints. Thegoal of this work is to provide maximal availability and consistencyof personal data as well as maximal aggregate device lifetime for acollection of personal devices. To accomplish this goal, the projectdevelops a set of cooperative prefetching algorithms that enabledevices to retrieve relevant data when connected to the informationsource. Further, the algorithms efficiently distribute the energyburden of performing prefetching across the collection of devices.The evaluation investigates the performance of the algorithms in animplementation running on a collection of laptop computers and iPAQs.Two primary metrics are considered: the aggregate lifetime of thedevices and the hit rate of user requests for data. The overarchingimpacts of this work will be improved usability of mobile devices andapplications and maximization of mobile device lifetime. Further, thestudent participants in this project are undergraduate women fromMount Holyoke College, one of the nation's finest all-womenundergraduate institutions. Therefore, the project will also serve toimprove the overall participation of women in systems research.

许多移动计算应用程序的基本挑战是数据管理。数据应随时随地可用。 但是，这项任务特别困难，因为尊重用户的个人数据（例如，数据文件，电子邮件和cachedweb页面），该任务（例如，笔记本电脑，PDA和手机）集合。 移动环境Makedata管理的两种属性特别具有挑战性：网络断开连接和设备资源限制，尤其是能量限制。 这项工作的目标是提供个人数据的最大可用性和一致性，以及用于个人设备的最大骨料设备寿命。 为了实现这一目标，项目开发了一组合作的预取算法，这些算法使evess可以在连接到Informationsource时检索相关数据。 此外，该算法有效地分发了在设备集合中进行预取的能源凸起。该评估研究了在动画中运行的算法在笔记本计算机和IPAQS. IPAQss的集合中的性能：两次考虑：两个主要指标：THEDEVICES的总体寿命和用户的命中率for Data的命中率。 这项工作的总体影响将提高移动设备和应用程序的可用性以及移动设备寿命的最大化。 此外，该项目的特定参与者是霍利莫特学院的本科女性，该学院是美国最好的全球班级机构之一。 因此，该项目还将有助于妇女在系统研究中的总体参与。