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CRII: CIF: Towards Self-Powered Heterogeneous Cellular Networks

CRII：CIF：迈向自供电异构蜂窝网络

基本信息

批准号：
1464293
负责人：
Harpreet Dhillon
金额：
$ 17.49万
依托单位：
Virginia Polytechnic Institute and State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2015
资助国家：
美国
起止时间：
2015-08-15 至 2018-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1464293&HistoricalAwards=false
关键词：
CRII CIF Towards Self Powered

项目摘要

Driven by unprecedented increase in mobile data traffic, cellular networks are undergoing a huge paradigm shift from a coverage-centric homogeneous deployment of high-power cell towers (base stations) to a more organic capacity-driven deployment that additionally includes various types of low-power base stations, collectively called small cells. To maintain deployment flexibility and limit operational costs, it is highly desirable that these base stations have a capability to power themselves through self-contained energy harvesting modules. The inherent unreliability associated with energy harvesting, however, combined withthe irregular locations of the small cells, makes it challenging to quantify the reliability of such "self-powered" heterogeneous cellular networks. This project aims to lay the foundations of these networks through new analytical tools and metrics. Self-powered base stations with additional capability to self-backhaul will result in a "truly wireless" cellular network thereby enabling a variety of "drop and play" deployments. Further broader impact of this project will be through research dissemination, education, broadening participation of students, and industry collaboration. With the overarching goal of establishing fundamental performance limits for self-powered hetergeneous networks, this project adopts a cross-disciplinary approach involving tools from communications, information theory, and stochastic geometry. The first synergistic component of this project develops a new comprehensive model capable of capturing key characteristics of self-powered heterogeneous networks, such as the differences in the base station capabilities, irregularities in their deployments, and uncertainties in their energy levels. Powerful mathematical tools with foundations in stochastic geometry and point process theory lend tractability to this model, thereby allowing the formal analysis of new performance metrics unique to self-powered heterogeneous networks. For instance, due to the coupling of loads across base stations, when one base station drains out its energy, it may initiate a "cascade effect" taking the whole network down with it. The first suite of results characterizes this behavior and determines the regimes in which the network remains stable. Once stability is guaranteed, the second set of results focuses on the end-user performance in this new paradigm where the surviving base stations are not always guaranteed to have sufficient energy to serve all their load, thereby resulting in energy outages. Finally, these metrics are jointly analyzed with classical quality-of-experience metrics, such as downlink rate.

在移动数据流量空前增长的推动下，蜂窝网络正在经历一场巨大的范式转变，从以覆盖为中心的高功率蜂窝塔（基站）的同构部署，到更有机的容量驱动部署，其中还包括各种类型的低功率基站，统称为小蜂窝。为了保持部署的灵活性和限制运营成本，非常希望这些基站能够通过独立的能量收集模块为自己供电。然而，与能量收集相关的固有不可靠性，加上小细胞的不规则位置，使得量化这种“自供电”异构细胞网络的可靠性具有挑战性。该项目旨在通过新的分析工具和指标为这些网络奠定基础。具有额外自回程能力的自供电基站将形成“真正的无线”蜂窝网络，从而实现各种“即插即用”部署。此计划将透过研究传播、教育、扩大学生参与及业界合作，进一步扩大影响。以建立自供电异构网络的基本性能限制为总体目标，该项目采用跨学科方法，涉及通信、信息论和随机几何工具。该项目的第一个协同组成部分开发了一个新的综合模型，能够捕捉自供电异构网络的关键特征，例如基站能力的差异、部署的不规则性以及能量水平的不确定性。具有随机几何和点过程理论基础的强大数学工具为该模型提供了可追溯性，从而允许对自供电异构网络特有的新性能指标进行形式化分析。例如，由于基站之间负载的耦合，当一个基站耗尽其能量时，可能会引发“级联效应”，使整个网络随之瘫痪。第一组结果描述了这种行为的特征，并决定了网络保持稳定的机制。一旦稳定性得到保证，第二组结果集中在这种新范例中的最终用户性能上，在这种范例中，幸存的基站并不总是保证有足够的能量来服务其所有负载，从而导致能源中断。最后，将这些指标与经典的体验质量指标（如下行速率）进行联合分析。