Fujitsu today announced that it will start collaboration with DOCOMO and Nippon Telegraph and NTT to conduct joint trials towards the realization of practical applications for 6G. In the joint trials, the partners will utilize radio waves in the high frequency range (sub-terahertz waves) of 100 GHz and 300 GHz, which represent promising candidates for use in 6G to realize a high-speed communication technology with radio wave propagation that is not affected by obstacles.100GHz and above are promising frequency bands for 6G networks that would enable communication speeds of over 100 Gbps, which is ten times higher than that of current 5G networks.
Wider frequency bands play a significant role in realizing high-speed and large-capacity communication exceeding that of current 5G networks. However, radio waves at higher frequencies tend to be more easily affected by obstacles, which makes communication between distant points difficult. To address this issue, Fujitsu, DOCOMO and NTT will conduct joint trials of distributed MIMO a wireless communication technology where multiple sub-terahertz wave antennas are dispersed to simultaneously emit radio waves from multiple directions to a receiving terminal.
In order to realize high-speed and large-capacity communications at sub-terahertz waves with small size and low power consumption, Fujitsu aims to develop high-frequency wireless devices utilizing compound semiconductors such as gallium nitride and indium phosphorus. Through this joint experiment, the three companies aim to develop technology that is resistant to obstruction and realizes stable high-speed wireless communication over 100 Gbps.