With the advent of 5G networks means for backhauling network traffic emerged as a major consideration. Densification via small cell deployment has made wired solution cost prohibitive, leading to the adoption of spectrally efficient wireless solutions, namely, Integrated Access and Backhaul (IAB). This paper discusses the different options for IAB and focuses on novel solutions for in-band IAB using Full Duplex (FD) enabled nodes. Dynamically reconfigured beam steering antennas are presented as a means of passively suppressing Self-Interference (SI). Experimental results confirm up to 65 dB of SI cancellation in a harsh environment with obstacle. Finally, robust methods for managing FD practical considerations including timing and frequency offsets are presented, with experimental results confirming performance.

随着5G网络的出现，回传网络流量的手段已成为主要考虑因素。通过小小区部署进行的致密化使有线解决方案的成本变得过高，导致采用了频谱有效的无线解决方案，即集成接入和回程（IAB）。本文讨论了IAB的不同选项，并重点介绍了使用支持全双工（FD）的带内IAB的新颖解决方案。提出了动态重新配置的波束控制天线，作为被动抑制自干扰（SI）的一种手段。实验结果证实，在有障碍物的恶劣环境下，SI消除高达65 dB。最后，介绍了用于管理FD实际考虑因素（包括时序和频率偏移）的可靠方法，实验结果证实了该性能。