CIF: Small: Cooperative Interference Management-A Fundamental Study

干扰是无线介质的一个基本特征，也是无线网络工程中的一个主要性能瓶颈。然而，无线媒体的广播性质以干扰的形式表现出来，这也可能是一种变相的好处。它允许多个节点接收一个共同的信号，并产生合作的潜力。到目前为止，关于广播方面的许多基础研究工作都分别解决了这两个方面（干扰和合作）。本项目在共同背景下以整体的方式研究干扰管理与合作。在这项工作中进行的研究(a)寻找新的通信策略，利用广播优势，同时最大限度地减少其干扰性质；(b)寻找新的沟通策略比传统方法提供最大收益的工程环境；(c)试图描述合作与干扰共存的可靠网络通信速率的新基本外部边界（超出切割集边界）。这些目标是通过简单（但规范）的无线网络模型来解决的，该模型在三种公式下具有两种单播流量，涵盖无线网络中的广泛问题：(i)蜂窝网络等合作网络，（ii）竞争网络或限制合作的网络，如Wi-Fi，以及（iii）涉及认知无线电的异构网络。

Interference is a fundamental feature of the wireless medium and a major performance bottleneck in the engineering of wireless networks. However, the broadcast nature of the wireless medium which manifests itself in the form of interference can also be a benefit in disguise. It allows multiple nodes to receive a common signal and generates the potential for cooperation. Much of the fundamental research effort on the broadcast aspect so far has addressed these two aspects (interference and cooperation) separately. This project studies interference management and cooperation in a common context and a holistic manner.The research conducted in this effort (a) looks for novel communication strategies that harness the broadcast advantage while minimizing its interfering nature; (b) looks to identify engineering contexts where the novel communication strategies provide the most gain over traditional approaches; and (c) looks to characterize novel fundamental outer bounds (beyond the cut-set ones) to rates of reliable network communication where cooperation and interference coexist. These goals are addressed by starting out with simple (but canonical) models of wireless networks featuring two unicast traffic under three formulations that cover a wide range of issues in wireless networks: (i) cooperative networks such as cellular networks, (ii) competitive networks or networks with restricted cooperation such as Wi-Fi, and(iii) heterogenous networks involving cognitive radios.