NeTS: Small: Leveraging Opportunistic Pushing for CDNs and Mobile Devices

一个充满活力和健康的无线网络对现代经济至关重要。物联网、自动驾驶汽车和一系列新的自动化技术等新技术都依赖于强大的高速无线技术来运行。不幸的是，对无线连接的需求远远超过了可用的无线频谱数量。使用更多的频谱和提高频谱效率是一些长期的解决方案。一个更直接的方法是探索如何使需求曲线变平——通过积极的时间转移和内容缓存来减少峰值需求。本研究的重点是探索内容提供商和网络运营商如何利用移动设备上未使用的免费存储空间，从而从根本上提高无线性能。简而言之，该研究寻求在空闲网络时间推送数据，以避免高峰时间的过载。无论是在拥挤的体育赛事还是拥挤的地铁站，这项工作的预期结果是移动设备下载数据的速度更快，电池寿命更长。这项工作旨在使拥挤场所的无线网络性能显著提高。在这项工作中，移动设备上的空闲空间被可信的内容提供商和网络运营商安全地写入，有效地允许网络运营商动态地将内容推送到设备上。在大规模无线系统（WiFi、蜂窝）中出现的机制和权衡带来了许多挑战，例如如何以及何时将内容推送到设备，从而使整个无线网络系统的健康状况获得净收益。该工作建议开发一种架构，旨在允许与网络串联的设备感知冗余内容。移动设备和网络运营商不断监控和检测冗余，触发阈值，通过D2D（设备到设备）共享和有针对性的广播有效地将冗余内容适当地推送到网络中。内容在网络空闲期间或高带宽机会时进行预演，以提高用户在响应性和效率方面的感知体验质量。该项目将开发原型应用程序，为Android和iOS创建软件开发工具包，并在要求高、密度大的环境中进行稳健的评估。

A vibrant and healthy wireless network edge is essential to the modern economy. New technologies such as the Internet of Things, self-driving vehicles, and a host of new automation technologies rely on robust, high-speed wireless technology for operation. Unfortunately, the demand for wireless connectivity has far outstripped the amount of wireless spectrum available. Using more spectrum and improving spectral efficiency are some longer-term solutions. A more immediate approach is to explore how to flatten the demand curve - reducing peak demands through aggressive time shifting and content caching. The focus of this research is to explore how the free storage space that sits unused on mobile devices can be leveraged by content providers and network operators to radically improve wireless performance. In short, the research seeks to push data during idle network times to avoid overloads during peak times. Whether it is a crowded sporting event or a crowded subway station, the intended result of the work is mobile devices that download data more quickly while operating with longer battery lifetimes. The work seeks to make wireless network performance in crowded venues remarkably better.In this work, free space on mobile devices is made securely writable by trusted content providers and network operators, effectively allowing the network operator to push content dynamically to a device. The mechanisms and trade-offs that occur in large scale wireless systems (WiFi, cellular) present numerous challenges with respect to how and when to push content to the devices such that there is a net gain to overall wireless network system health. The work proposes to develop the architecture which seeks to allow devices in tandem with the network to sense redundant content. Mobile devices and the network operator constantly monitor and detect redundancy, triggering thresholds by which redundant content is efficiently pushed appropriately in the network through D2D (device to device) sharing and targeted broadcasts. Content is pre-staged during network idle periods or high bandwidth opportunities to time shift, improving the perceived Quality of Experience of the user in both responsiveness and efficiency. The project will develop prototype apps, create a Software Development Kit for Android and iOS, and conduct robust evaluations in demanding, dense environments.