July 2022 Vol. 20 No. 772022

https://www.ntt-review.jp/archive/2022/202207.html

Front-line Researchers
Ryuichiro Higashinaka, Visiting Senior Distinguished Researcher, NTT Human Informatics
Laboratories/NTT Communication Science Laboratories

Rising Researchers
Takuhiro Kaneko, Distinguished Researcher, NTT Communication Science Laboratories

Feature Articles
Optical and Wireless Transmission Technologies for IOWN/6G
Research and Development for Pioneering a New Communications Paradigm with Wide-area
Coverage
Future Development of Digital Coherent Optical Transmission Technology
Research and Development of Scalable Optical Transport Technologies
R&D Activities of Core Wireless Technologies toward 6G Radio AccessFeature Articles
ICT Platform for Connected Vehicles Created by NTT andToyota
Overview of Technical Development and Verification in the Connected-vehicle Field
Activities and Results of Field Trials—Reference Architecture for a Connected-vehicle Platform
Activities and Results of Field Trials—Network Edge Computing Platform
Real-time Spatiotemporal Data-management Technology (AxispotTM)
Selective Vehicle-data-collection Algorithm
Vertically Distributed Computing Technology
Lane-specific Traffic-jam-detection Technology
Technology for Calculating Suddenness Index for Aggregated Values

Regular Articles
Unsupervised Depth and Bokeh Learning from Natural Images Using Aperture Rendering
Generative Adversarial Networks

Global Standardization Activities
Report of the 9th ITU-T TSAG (Telecommunication Standardization Advisory Group) Meeting

Front-line Researchers

Ryuichiro Higashinaka, Visiting Senior DistinguishedResearcher, NTT Human Informatics Laboratories/NTT
Communication Science Laboratories▼Abstract
Ryuichiro Higashinaka, a visiting senior distinguished researcher of NTT Human
Informatics Laboratories/NTT Communication Science Laboratories and professorof the Graduate School of Informatics, Nagoya University, is aiming to create adialogue system that allows humans and computers to understand each other andintelligently collaborate by clarifying the principles of natural-dialogue interaction
between them. We interviewed him about the progress of his research and his
attitude as a researcher.

Feature Articles
Optical and Wireless Transmission Technologies for IOWN/6G

Research and Development for Pioneering a New
Communications Paradigm with Wide-area Coverage▼Abstract

Research and development at NTT Network
Innovation Laboratories aims to establish
elemental technologies for next-generation
communication networks envisioned underNTT’s Innovative Optical and Wireless Network(IOWN) and the 6th-generation mobile
communication system (6G). This article
introduces optical/wireless transmission
technologies and systemization technologies
currently being researched and developed at
NTT Network Innovation Laboratories.

Computing network platform technology
Natural transmission technology

Medium(Spatialmultiplexing)

Enclosed
space: Pursue principles
on the physical layer: Physical application,systemizing

Scalable opticaltransport

Wave adaptation& control(Single core)
Quantum
cryptography

FLEX
digital-coherent
Extreme L1
network(Boundary region)
Free-space optics(Air,outer space)Open(On land)
space

Satellite sensing

100G digitalcoherent RX

100G digitalcoherent TX

Terabit wireless

Underwater acoustic comm.

Intelligent space formation& comprehension technology(Underwater)(Sound)Low(Radio)(Light)Frequency bandHighFeature Articles
ICT Platform for Connected Vehicles Created by NTT and Toyota

Overview of Technical Development and Verification in theConnected-vehicle Field▼Abstract

The NTT Group and Toyota Motor Corporation arecollaborating on the research and development of an
ICT platform for connected vehicles. They conductedjoint field trials from 2018 to 2020 and established
the basic technology through various use cases andverification of the platform. In the Feature Articles inthis issue, the NTT Group operating companies andNTT laboratories that are participating in thecollaboration present the details of the field trials, theresults, technologies applied, value provided, andfuture issues.

Data collection, storage,
and analysis platform

Datacenter

Network

Edge computing

5G/LTE

Connected vehicle