CIF: Medium: Fundamental Properties of Millimeter Wave Networks: Signal, Interference, and Connectivity

蜂窝通信网络已经成为社会最重要和最复杂的技术之一。自2008年以来，移动的数据使用量每年大约翻一番，相当于十年增长1,000倍。 为了满足这种永不满足的需求，蜂窝系统需要更多的带宽。 这需要使用更高的频率，因为在10 GHz以下几乎没有未使用的频谱，特别是在城市地区的高峰时段。 在“毫米波”（mmW）频谱中，有大量的轻度使用频谱可用，这里定义为高于25 GHz。 在25 GHz以上的移动的数据通信中存在许多基本的技术挑战，本项目的目标是探索这些基本挑战并构建新的工具来克服它们。 所进行的研究将通过实现蜂窝通信网络的全新模式，对电信行业和整个社会产生重大影响。 除了理论贡献外，研究人员还将通过众多政府和行业合作伙伴实施积极的技术过渡计划。该项目将开发新的数学和分析工具，揭示毫米波蜂窝网络的潜力。研究议程建立在这样一种信念之上，即为低频系统开发的丰富工具不足以捕获关键的毫米波信号传播特征，特别是高方向性和阻塞。 该研究分为三个相互关联的主题，每个主题都有几个拟议的研究任务：毫米波信号强度，毫米波干扰和毫米波网络连接。研究任务围绕着几个跨越所有三个方向的技术主题进行统一：（1）在3D中对毫米波网络进行建模，包括将开发统计阻塞模型并使用真实的建筑数据进行验证的障碍;（2）在性能分析中考虑信号和干扰相关性，这在mmW中将是显著的，因为它们的主要随机化因素是阻塞和波束对准而不是衰落和阴影;（3）考虑并解决移动性对波束对准和网络连接性的可能严重影响。开发的理论将被用来设计有用的模型，参数化的真实的建筑数据，以促进快速性能评估。将包括实用毫米波收发器的特性，例如波束自适应、移动性和干扰消除，并用于研究关键设计权衡。该提案中开发的新数学框架将允许对mmW蜂窝系统进行透明和全面的性能分析，并使新通信技术的开发和公平比较成为可能。

Cellular communication networks have become one of society's most important and complex technologies. Mobile data usage has been approximately doubling every year since about 2008, which corresponds to a 1,000 times increase over a decade. To meet this insatiable demand, much more bandwidth is required for cellular systems. This requires going to (much) higher frequencies, since there is very little unused spectrum below about 10 GHz, especially at peak times in urban areas. Significant amounts of lightly used spectrum is available in the "millimeter wave" (mmW) spectrum, defined here as being above 25 GHz. There are numerous fundamental technical challenges in mobile data communication above 25 GHz, and the goal of this project is to explore these fundamental challenges and build new tools to overcome them. The research undertaken should considerably impact the telecommunications industry and society as a whole, by enabling an entirely new paradigm for cellular communication networks. In addition to theoretical contributions, the investigators will pursue an aggressive technology transition plan through their numerous government and industry partners. This project will develop new mathematical and analysis tools that uncover the potential of mmW cellular networks. The research agenda is built on the belief that the wealth of tools developed for lower frequency systems are insufficient to capture key mmW signal propagation features, specifically high directionality and blockage. The research is structured as three inter-related thrusts, each with several proposed research tasks: mmW signal strength, mmW interference, and the mmW network connectivity. The research tasks are unified around several technical themes that cut across all three thrusts: (1) modeling mmW networks in 3D, including the obstacles for which statistical blocking models will be developed and validated with real building data; (2) accounting for signal and interference correlation in performance analysis, which will be significant in mmW due to their main randomizing factors being blocking and beam alignment rather than fading and shadowing; (3) accounting for and addressing the possibly severe effects of mobility on beam alignment and network connectivity. The developed theories will be used to devise useful models, parametrized by real building data to facilitate fast performance evaluation. Features of practical mmW transceivers like beam adaptation, mobility, and interference cancellation will be included and used to study key design tradeoffs. The new mathematical framework developed in this proposal will allow transparent and comprehensive performance analysis of mmW cellular systems, and enable the development and fair comparison of new communication techniques.