CIF: Small: Efficient Relaying and Scheduling for Half-Duplex Wireless Networks

无线技术目前正在经历主要由惊人数量的数据业务和大量关键服务（例如，医疗保健和教育）。中继技术在这场无线革命中扮演着中心角色，由此通过使信息通过中继池（即，中间节点）。中继预计将成为实现不断发展的5G架构和支持下一代物联网网络的关键组件。本项目旨在对无线中继网络的几个理论和实践方面进行全面分析。该研究及其成果将被纳入教育，并将促进本科生和研究生的研究。该项目侧重于在继电器的半双工操作模式，其中每个继电器使用不同的时隙/频带进行发送和接收。拟议的研究旨在获得理论基础，阐明如何操作这些中继网络在一个可证明的（信息理论）接近最佳，但简单的方式，并开发低复杂度的算法，有效地实现理论限制。将特别强调设计解决方案，以简单有效的方式安排中继接收/发送。这将需要克服几个挑战，包括在计算受限的网络中实现高性能，并提供对信道变化的鲁棒性。我们的最终目标是确定解决方案，可以在一个分布式的方式在整个中继节点，并需要最小的通信开销交换的信道状态信息。这个奖项反映了NSF的法定使命，并已被认为是值得通过评估使用基金会的智力价值和更广泛的影响审查标准的支持。

Wireless technology is currently experiencing a transformative revolution fueled mainly by the staggering amount of data traffic and massive number of critical services (e.g., healthcare and education) offered over the wireless medium. A central role in this wireless revolution is played by relaying technologies, whereby data is transferred from a sender to a receiver by having information hop through a pool of relays (i.e., intermediate nodes). Relaying is foreseen to be a key component for enabling the evolving 5G architecture, and supporting next generation Internet of Things networks. This project seeks to develop a comprehensive analysis of several theoretical and practical aspects of wireless relay networks. The research and its outcomes will be integrated into education, and will promote undergraduate and graduate research.This project focuses on half-duplex mode of operation at the relays whereby each relay uses different time slots/frequency bands for transmission and reception. The proposed research seeks to derive theoretical foundations that shed light on how to operate these relay networks in a provably (information-theoretic) close-to-optimal, yet simple way, and to develop low-complexity algorithms for efficiently achieving the theoretical limits. Special emphasis will be put on devising solutions to schedule the relays for reception/transmission in a simple and efficient way. This will require that several challenges be overcome, including achieving high performance in computationally-constrained networks, and providing robustness against channel variations. Our ultimate goal is to identify solutions that can be implemented in a distributive fashion across the relay nodes, and that require a minimum communication overhead for exchanging the channel state information.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.