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，也可能是变相的好处。它允许多个节点接收共同的信号并产生合作的潜力。到目前为止，关于广播方面的大部分基础研究工作都分别涉及这两个方面(干扰和合作)。本项目从一个共同的背景和一个整体的方式来研究干扰管理和合作。在这项工作中进行的研究(A)寻找利用广播优势的新的通信策略，同时最小化其干扰性质；(B)寻找新的通信策略比传统方法提供最大收益的工程背景；以及(C)寻找新的基本外界(超出割集)到合作和干扰共存的可靠网络通信的速率的特征。这些目标是从简单(但规范)的无线网络模型开始的，该模型具有三种形式的两个单播流量，涵盖了无线网络中的广泛问题：(I)协作网络，如蜂窝网络，(Ii)竞争网络或受限合作的网络，如Wi-Fi，以及(Iii)涉及认知无线电的异质网络。

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.