Collaborative Research: 7DS - A Mobile Broadband Distributed System

国家科学基金会分布式系统研究CISE/CNSABSTRACT提案编号：0412025/0412029主要研究者：Schulzrinne，Henning/Frankl，Phyllis Gail机构：哥伦比亚大学和纽约理工大学提案标题：合作研究：7 DS-一种移动的宽带分布式系统在理想的世界中，移动的用户将能够在任何地方享受负担得起的宽带互联网接入，包括在公共交通工具（公共汽车、火车和飞机）中、在未被Wi-Fi接入点覆盖的室外空间中以及在宽带有线基础设施可能被破坏的灾区中。不幸的是，在可预见的未来，这种互联网接入涅盘将无法实现。无论是宽带互联网还是新兴的2.5-3G蜂窝数据网络都不会提供同时宽带、负担得起的、无限制的互联网接入。这个项目原型和部署7 DS，一个分布式系统，使用户更接近互联网接入涅槃的重要一步。7 DS填补了宽带互联网和蜂窝数据网络之间的差距，充分利用了日益增加的漫游设备密度，这些设备具有千兆字节存储和短距离宽带无线通信能力。使用异步通信，7 DS为漫游用户提供了一种以高峰速率获得内容的方法;它还为漫游用户提供了一种将内容发送到互联网的方法，同样也是经济实惠的，适用于大型对象。预期的结果包括：（i）一个综合的7 DS原型，证明7 DS系统的可行性;（ii）用于7 DS的新算法和协议，这些算法和协议将在主要会议和期刊上传播，并在原型中实现;（iii）在大学校园实际部署7 DS系统，演示了7 DS如何弥合本地宽带Wi-Fi接入和无处不在的窄带蜂窝数据接入之间的差距。FleischProgram Director，CISE/CNSJuly 20，2004.

National Science FoundationDistributed Systems Research CISE/CNSABSTRACTProposal Number: 0412025/0412029Principal Investigator(s): Schulzrinne, Henning/Frankl, Phyllis GailInstitution(s): Columbia University and Polytechnic University of New YorkProposal Title: Collaborative Research: 7DS - A Mobile Broadband Dis-tributed SystemIn an ideal world, mobile users would be able to enjoy affordable broadband Internet access everywhere, including in public transportation vehicles (buses, trains and planes), in outdoor spaces not covered by Wi-Fi access points, and in disaster areas where the broadband wired infrastructure may be broken. Unfor-tunately, such Internet access Nirvana will not be available in the foreseeable future. Neither the broadband Internet nor the emerging 2.5-3G cellular data networks will provide Internet access that is at once broadband, affordable andubiquitous. This project prototypes and deploys 7DS, a distributed system which brings us-ers a significant step closer to Internet access Nirvana. Bridging the gap be-tween the broadband Internet and the cellular data networks, 7DS exploits the increasing density of roaming devices that are endowed with both gigabyte stor-age and short-range, broadband wireless communication capabilities. Using asynchronous communication, 7DS provides a means for roaming users to ob-tain content affordably and at high peak rates; it also provides a means for roaming users to send content into the Internet, again affordably and suitable for large objects. The expected results include (i) a comprehensive prototype for 7DS, demonstrating the feasibility of the 7DS system; (ii) new algorithms and protocols for 7DS, which will be disseminated in major conferences and jour-nals and implemented in the prototype; (iii) actual deployment of the 7DS sys-tem on university campuses, demonstrating how 7DS can bridge the gap be-tween localized broadband Wi-Fi access and ubiquitous narrowband cellular data access.Dr. Brett D. FleischProgram Director, CISE/CNSJuly 20, 2004.