Fujitsu is starting trials of 6G network technology in Japan with operators NTT Docomo and NTT.
The trials will use the 100 GHz and 300 GHz frequency bands as the most promising candidates for use in point to point links for 6G networks. The companies are also looking to develop a high-frequency wireless device based on compound semiconductors such as gallium nitride (GaN) and indium phosphorus (InP).
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. However, radio waves at higher frequencies tend to be more easily affected by obstacles, which makes communication between distant points difficult.
6G networks are expected to further accelerate the digitization of society and provide essential solutions to complex issues in society. The R&D activities focus on high-speed, large-capacity, low-latency, and simultaneous multi-connection features of current 5G networks with low power consumption with an eye towards the full-scale launch of 6G networks and services around 2030.
Fujitsu, Docomo and NTT will conduct joint trials of distributed MIMO antenna array systems where multiple sub-terahertz wave antennas are dispersed to simultaneously emit radio waves from multiple directions to a receiving terminal.
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.
“Docomo has been collaborating with Fujitsu since 2014 to verify wireless technologies towards the realization of 5G, and has leveraged the obtained know-how to provide 5G commercial services since 2020. We are delighted to collaborate with Fujitsu also towards the realization of the 6G concept,” said Naoki Tani, Executive Vice President and Chief Technology Officer at Docomo.#
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