NeTS-ProWin: COLLABORATIVE RESEARCH: A new taxonomy for cooperative wireless networking

合作链路如何在物理层提供可观的性能增益是有据可查的，但不清楚需要什么样的网络支持才能获得所寻求的增益。 协作链路违反了广播传输的简单冲突模型，该模型迄今为止在允许通信理论和网络理论的并行演进方面一直是有用的。认识到没有一个正确的分类使用合作链路在网络和多址接入层，这个合作项目的目标是从理论和实验上研究合作分散的物理层和无线网络架构作为一个整体之间的相互作用。更具体地说，该项目将开发可行的链路抽象、多址接入协议、端到端网络传输模型、适当的算法，以支持在无线移动的网络中引入两种正在迅速发展的技术：1）协作传输，其由作为分散式多天线调制解调器操作的多个网络节点组成，以及2）分布式信源编码，该项目还将使用GNU软件无线电平台测试合作链路，并评估其在面临收发机同步、载波偏移等真实的限制时的可行性和退化情况，时钟抖动和计算延迟。算法和理论结果将通过研究出版物的标准工具传播。实验结果也将在网上记录，软件将作为教育工具共享，并促进网状网络的新技术进步。该项目将使未来的无线网络更接近通信的物理极限。

It is well documented how cooperative links can offer considerable performance gains at the physical layer, but it is unclear what kind of network support would be required to attain the sought gains. Cooperative links violate the simple collision model for broadcast transmission, a model that has been instrumental so far in allowing the parallel evolution of communication theory and network theory. Recognizing the absence of a correct taxonomy to use cooperative links at the network and multiple access layer, the objective of this collaborative project is to investigate theoretically and experimentally the interplay between a cooperative decentralized physical layer and the wireless network architecture as a whole. More specifically, the project will develop viable link abstractions, multiple access protocols, end-to-end network transport models, appropriate algorithms to support the introduction in wireless mobile networks of two technologies that are rapidly advancing: 1) cooperative transmission, that consists of multiple network nodes operating as a decentralized multi-antenna modem and, 2) distributed source coding, that allows the decentralized compression of correlated observations and, thus, is relevant to the design of a decentralized receiver.The project will also use the GNU software radio platform to test cooperative links and assess their feasibility and degradation when facing real limitations of transceiver synchronization, carrier offset, clock jitter and computation delays. Algorithms and theoretical results will be disseminated through the standard tools of research publications. Experimental results will be also documented online where the software will be shared to serve as an educational tool as well as to foster new technological advances in mesh networks.This project will bring future wireless networks closer to achieving the physical limits of communications.