NeTS: Medium: Collaborative Research: Mobile Content Sharing Networks:Theory to Implementation

最近几年见证了诸如智能电话、平板电脑和膝上型电脑的移动的手持设备的普及和能力的爆炸性增长。这些便携式设备的快速扩展的计算能力使其用户能够随时随地访问、处理和共享内容。然而，这些设备已经给当今的许多3G/4G蜂窝网络带来了巨大的压力，如果不加以解决，将导致未来的服务质量和用户体验越来越差。为了解决这个问题，该项目研究如何利用移动的内容共享环境的关键属性，以显着提高网络性能。初步研究表明，联合利用无线信道和移动性可以产生更大的收益，甚至比移动性和信道单独利用的总和。在这种情况下，整体大于其部分之和！因此，本研究的主要重点是（一）发展双重机会主义的分析基础-即，联合开发无线信道和移动性-考虑到内容分发网络的无线环境的实际情况;（ii）开发低复杂度算法、算法和可证明有效的分布式协议;（iii）调查不完善知识对性能的影响;（iv）透过试验平台的部署，验证研究结果。预期该计划会在无线网络的设计和性能方面带来重大突破，以供分享内容。利用双重机会主义开发的算法和协议，以及它们背后的理论，将对无线产业产生重大影响。

The last few years have witnessed an explosive growth in the popularity and capabilities of mobile handheld devices such as smart-phones, tablets, and laptops. The rapidly expanding computational power of these portable devices has enabled their users to access, process, and share content anytime, anywhere. However, these devices have already put significant stress on many of today's 3G/4G cellular networks, which, if left unaddressed, will result in increasingly poor quality-of-service and user experience in the future. To address this problem, the project investigates how to exploit the key attributes of mobile content sharing environments to dramatically increase network performance. Preliminary studies show that jointly utilizing the wireless channel and mobility can yield greater gains than even the sum of exploiting mobility and the channel independently. In this case, the whole is greater than the sum of its parts! Thus, the main focus of this research is to (i) develop the analytical foundation for double opportunism - i.e., joint exploitation of the wireless channel and mobility-considering the practical realities of the wireless environment for content distribution networks; (ii) develop low-complexity algorithms, heuristics, and distributed protocols that are provably efficient; (iii) investigate the impact of imperfect knowledge on performance; (iv) validate the results via testbed deployment.The project is expected to lead to fundamental breakthroughs in the design and performance of wireless networks for content sharing. The algorithms and protocols developed by exploiting double opportunism, and the theories underlying them, will have a significant impact on the wireless industry.