Collaborative Research: Virtual Full-Duplex Wireless Networking

目标：本项目的目标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性能。今天的商用和军用无线电是半双工的，并且由于压倒性的自干扰而不能在同一频带上同时发送和接收。 该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模式。其中一项关键技术称为快速开-关-分双工，通过选择开-关掩码并让每个节点通过开时隙发送和通过关时隙接收，允许所有节点同时发送和接收。在单个帧上，每个节点可以同时向所有相邻节点广播消息，并同时从每个邻居接收消息。 该方案消除了对传输调度的主要限制，从而提高了吞吐量，降低了网络开销。智能优势：智能优势在于能够使节点同时发送和接收信息的变革性网络架构和设计，这与传统的在时间和/或频率上分离发送和接收的观点相反。这项具有挑战性的研究将借鉴并补充通信理论、信号处理、信息理论和网络理论。更广泛的影响：更广泛的影响是全新的无线标准，具有强大和显着改善的性能，涉及本科生和研究生的前沿研究，并将新的研究成果融入课程。

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.