Collaborative Research: Virtual Full-Duplex Wireless Networking

目的：本项目的目的是为虚拟全双工无线网络的各个方面奠定理论基础，并使用现成的软件定义无线电构建原型并评估其性能。今天的商用和军用无线电是半双工的，由于压倒性的自干扰，不能在同一频段同时发射和接收。本项目通过提出基于新兴技术的物理层、介质访问控制层和网络层的全双工和虚拟全双工设计来挑战这种范式。一项关键技术，称为快速开关双工，允许所有节点同时发送和接收，通过选择一个开关掩码，让每个节点通过开槽发送和接收。在单个帧中，每个节点可以同时向所有相邻节点广播一条消息，并同时接收来自每个邻居的消息。这种变革性解决方案消除了传输调度上的一个主要约束，从而提高了吞吐量并降低了网络开销。智能优势：智能优势在于变革性的网络架构和设计，使节点能够同时传输和接收信息，这与按时间和/或频率分离传输和接收的传统智慧相反。这项具有挑战性的研究将从通信理论、信号处理理论、信息理论和网络理论中汲取并补充。更广泛的影响：更广泛的影响是全新的无线标准，具有强大且显著提高的性能，涉及本科生和研究生的前沿研究，并将新的研究成果整合到课程中。

Objective:The objective of this project is to lay a theoretical foundation for all aspects of virtual full-duplex wireless networks and to build prototypes using readily available software-defined radios and evaluate the performance. Commercial and military radios of today are half-duplex and cannot transmit and receive simultaneously over the same frequency band due to overwhelming self-interference. This project challenges the paradigm by proposing full-duplex and virtual full-duplex design of the physical, medium access control and network layers based on emerging technologies.One key technique, called rapid on-off-division duplex, allows all nodes to transmit and receive simultaneously by choosing an on-off mask and letting each node transmit through the on-slots and receive over the off-slots. Over a single frame, every node can simultaneously broadcast a message to all neighboring nodes and receive a message from every neighbor at the same time. The transformative solution removes a major constraint on the transmission schedule and thereby increases the throughput and decreases network overhead.Intellectual merit:The intellectual merit lies in transformative network architectures and designs that enable nodes to transmit and receive information at the same time, contrary to conventional wisdom of separating transmission and receptions in time and/or frequency. This challenging research will draw from and, in turn, add to, communication theory, signal processing, information theory, and network theory.Broader impacts:The broader impacts are radically new wireless standards with robust and significantly improved performance, involving undergraduate and graduate students in cutting-edge research, and integrating new research results into the curricula.