NeTS: Small: Periodic schedules for energy-efficient wireless coexistence

该项目的动机是由于依赖无线电技术的服务和应用的增长而产生的以下挑战：(I)随着频谱使用的空间密度的增加，更多的无线系统需要在公共频谱上共存，(Ii)无线信息技术的能量足迹以惊人的速度增长，而密度的增加加剧了这种增长，以及(Iii)越来越多的应用要求严格的延迟保证，这与传统的随机接入技术不兼容。该计划的目标是开发一个可扩展的框架，在密集频谱使用场景中提供延迟保证，同时消除介质访问仲裁中的能量消耗。为了实现这一目标，该项目研究了周期性介质访问方案的基本属性和实现，在该方案下，冲突的传输在时间上被分开。从描述性和规定性两个角度研究了周期空间系统的内在性质。该计划的范围包括开发经证明对传播延迟、隐藏节点和时钟漂移具有健壮性的分散算法。由于运营能耗和电池制造，无线接入的节能框架将对信息技术的足迹产生有利影响。计划的成功完成也将促进频谱的密集使用和可预测的服务质量，从而使重要的公共资源得到更好的利用。该项目包括研究生和本科生的教育内容，以及对即将出台的网络标准的潜在影响。

This project is motivated by the following challenges that arise due to the growth of services and applications that rely on radio technologies: (i) As spatial density of spectrum usage increases more wireless systems need to coexist on common spectrum bands, (ii) The energy footprint of wireless information technologies grows at a remarkable pace that is exacerbated by the increasing density, and (iii) An increasing fraction of applications require tight delay guarantees that are incompatible with classical random access techniques. The objective of the program is to develop a scalable framework for providing delay guarantees in dense spectrum usage scenarios, while eliminating energy consumption in medium access arbitration. Towards this goal the project studies fundamental properties and implementations of periodic medium access schemes under which conflicting transmissions are separated in time. Inherent properties of periodic spatial systems are studied from both descriptive and prescriptive viewpoints. The scope of the program includes development of decentralized algorithms that are provably robust to propagation delays, hidden nodes, and clock drifts.An energy-efficient framework for wireless access will have favorable impact on the footprint of information technologies due to both operational energy consumption and battery manufacturing. Successfully completed program will also facilitate dense usage of spectrum with predictable service quality, and thereby will lead to better utilization of an important public resource. The project has educational components at the graduate and undergraduate levels, and potential impact in upcoming networking standards.