Special Articles on 5G Evolution & 6G in NTT Docomo Technical Journal

We have looked at NTT Docomo's 6G Whitepaper as well as the 6G Concepts they demonstrated as part of MWC 2021.

Now, the latest NTT Docomo Technical Journal, Oct. 2021, has Special Articles on 5G evolution & 6G on the following topics:

  • Trends and Target Implementations for 5G evolution & 6G
  • Research of Transparent RIS Technology toward 5G evolution & 6G
  • Research on NTN Technology for 5G evolution & 6G
  • Improving Communication Performance in High-mobility Environments by Millimeter-wave Base Station Cooperation for 5G evolution

The first article, on "Trends and Target Implementations for 5G evolution & 6G" presents an outline of domestic and international trends and schedule prospects for 5G evolution & 6G, as well as the concepts proposed in the 6G White Paper. 

The next article on "Research of Transparent RIS Technology toward 5G evolution & 6G" presents the concept of Intelligent Radio Environment (IRE) that attempts to adaptively control the radio environment, which is deemed to be a useful approach to achieving non-line-of-sight coverage in the millimeter-wave band, an important issue in  achieving 5G evolution & 6G.  It also describes RIS as an elemental technology of IRE and metamaterial/metasurface technologies that form the foundation of RIS. The technology described in this is expected to become a base technology for constructing coverage areas not only for 5G but also for 6G and beyond radio systems whose frequencies are expected to be even higher. 

The article on "Research on NTN Technology for 5G evolution & 6G" looks at implementing extreme coverage extension, which is one of the important issues for B5G & 6G. This article describs NTN technology, especially HAPS use cases and network configuration/control technology. Docomo have shown the results of airborne radio propagation tests performed using a small aircraft assuming HAPS use cases. NTT DOCOMO will continue developing NTN technology aimed at achieving extreme coverage extension and tech- nology for realizing HAPS networks, and promoting demonstration experiments and standardization activities.

The final article, "Improving Communication Performance in High-mobility Environments by Millimeter-wave Base Station Cooperation for 5G evolution" describs research and development for 5G evolution with the aim of providing stable throughput with wide coverage by applying base station cooperation technology while suppressing interference between multiple mobile stations by applying digital BF in the mmWave band. 

You can get the combined PDF here or get individual ones from here.

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