The use of in-band full-duplex (FD) enables nodes to simultaneously transmit and receive on the same frequency band, which challenges the traditional assumption in wireless network design. The full-duplex capability enhances spectral efficiency and decreases latency, which are two key drivers pushing the performance expectations of next-generation mobile networks. In less than ten years, in-band FD has advanced from being demonstrated in research labs to being implemented in standards and products, presenting new opportunities to utilize its foundational concepts. Some of the most significant opportunities include using FD to enable wireless networks to sense the physical environment, integrate sensing and communication applications, develop integrated access and backhaul solutions, and work with smart signal propagation environments powered by reconfigurable intelligent surfaces. However, these new opportunities also come with new challenges for large-scale commercial deployment of FD technology, such as managing self-interference, combating cross-link interference in multi-cell networks, and coexistence of dynamic time division duplex, subband FD and FD networks.
翻译:Abstract: 采用带内全双工 (FD) 技术可以让节点在同一个频带上同时进行发送和接收操作,这一设计挑战了无线网络设计中的传统假设。全双工技术增强了频谱效率,降低了传输延迟,这是推动下一代移动网络性能期望的两个关键驱动因素。不到十年时间,带内全双工技术从研究实验室的演示进展到成为标准和产品中的一种实现方案,从而为利用其基础概念带来了新机遇。其中一些最重要的机遇包括利用全双工技术使无线网络能够感知物理环境,集成感知和通信应用,开发一体化接入和回程方案,并与支持可重构智能表面的智能信号传播环境协同工作。然而,这些新机遇也带来了大规模商业化部署全双工技术的新挑战,例如如何管理自身干扰、如何克服多小区网络中的交叉链路干扰,以及如何协调动态时分双工、子频带全双工和全双工网络的共存。