CIF: Small: Collaborative Research: Communications with Energy Harvesting Nodes

由能够从环境中获取能量的节点组成的无线网络代表了通信的绿色未来。利用收集的环境能量改善了全球范围内无线设备的环境影响，同时无限延长了网络寿命，并使设备真正移动的。能量收集（EH）以可用能量的随机性和不确定性的形式为系统设计带来了新的维度，以及额外的系统问题，例如能量存储容量和处理复杂性。此外，EH无线网络的部署需要用于资源和干扰管理、EH节点之间的协作以及网络的跨层优化的新技术。研究的重点是一组新的挑战所带来的无线网络组成的EH节点。研究方向分为四个主要方向。(1)第一个挑战是理解EH通信在信息理论环境中的基本限制，考虑可用能量的随机和间歇性供应，有限的电池容量以及存储和提取效率。低功率和高功率制度的特殊情况是特别感兴趣的。(2)为了有效地利用可用资源，EH网络中的联合能量调度和频谱和/或空间资源分配利用资源分配问题的固有结构成为一个重要的问题。(3)网络中的不同EH节点可以通过它们之间的电力线的存在或通过无线充电来共享它们收集的能量。该研究通过能源和数据合作研究了以前的推力。(4)本研究探讨了高效的分布式跨层解决方案，以最大限度地提高系统的总效用受数据和能量排队稳定性约束。

Wireless networks composed of nodes that can harvest energy from the environment represent the green future of communications. Utilizing the harvested ambient energy improves the environmental impact of wireless devices in the global scale, while extending the network lifetime indefinitely and making the devices truly mobile. Energy harvesting (EH) brings new dimensions to system design in the form of randomness and intermittency of available energy, as well as additional system issues such as energy storage capacity and processing complexity. Additionally, the deployment of EH wireless networks calls for novel techniques for resource and interference management, cooperation among EH nodes, as well as cross-layer optimization of the network. The research focuses on a new set of challenges brought about by wireless networks composed of EH nodes. The research directions are divided into four major thrusts. (1) The first challenge is to understand the fundamental limit of EH communications in the information theoretic setting, accounting for random and intermittent supply of available energy, finite battery capacity with storage and withdrawal efficiencies. The special cases for low-power and high-power regimes are of particular interest. (2) In order to make efficient use of the available resources, joint energy scheduling and spectral and/or spatial resource allocation in EH networks exploiting the inherent structure of the resource allocation problems becomes an important problem. (3) Different EH nodes in the network can share their harvested energy either through the presence of power line between them, or through wireless charging. The research studies previous thrusts with energy and data cooperation. (4) The research investigatesefficient distributed cross-layer solutions to maximize the total system utility subject to data and energy queuing stability constraints.