Kyocera Corporation and SoftBank Corp. conducted a backhaul system verification test utilizing the millimeter-wave band allocated to SoftBank for 5G (referred to as “5G millimeter-wave”) at SoftBank base stations located in Akiruno City, Tokyo, from January to April 2022. This system used a 5G millimeter-wave to connect a backhaul link between a donor station and a relay node station that constitutes the access area. The donor station conformed to the O-RAN Alliance* front-hole specifications that connect to the network. In view of the demonstration test results, Kyocera and SoftBank are pleased to announce that they successfully verified stable communications and system effectiveness.
Through this demonstration, Kyocera and SoftBank confirmed that a backhaul system utilizing 5G millimeter-wave would contribute to shortened construction periods and cost reductions through efficient use in areas where 5G networks are difficult to install due to challenges such as topography. Both companies also confirmed that 5G millimeter-wave technology could be a new means of communication between base stations and terminals.
Kyocera and SoftBank will continue to consider how to address issues such as lowering power consumption and operational automation. Both companies will also consider systems that can be applied to various needs in Japan and overseas.