Automatic Deployment Planning of 300-GHz-Band Wireless Fronthaul Link in Metropolitan Areas

In 6G mobile wireless fronthaul, it is planned that 300-GHz-band remote antenna units (RAUs) are mounted on traffic lights and street lights in order to achieve a short transmission distance with line-of-sight (LOS) environments. It is difficult to deploy a lot of THz wireless links with high density in metropolitan area with LOS environment and without inter-cell interference. This paper proposes an algorithm for automatic planning of 300-GHz-band wireless fronthaul link deployment. 87 RAUs were placed at the location of traffic lights/street lights read from the map at Shinjuku, Japan, and installed 46 RAUs on the rooftops of the buildings by automatic deployment algorithm in order to connect all RAUs to the center base station (BS) with LOS environment. We conducted radio wave propagation simulation, and simulation results showed that SNR and SINR of the automatically deployed 300-GHz-band wireless fronthaul links is below required standard demand of SNR for 100-Gbit/s data transmission.