Hidehiro Tsukano, President & CEO, NTT Innovative
Devices

Front-line Researchers
Hiroshi Yamaguchi, NTT Fellow, NTT Basic ResearchLaboratories

Rising Researchers
Tomonori Fujita, Distinguished Researcher, NTT
Software Innovation CenterFeature Articles
Toward More Robust Networks

Feature Articles
Toward More Robust Networks

Operation to Achieve Robust Networks
Abstract
Large-scale communication-infrastructure
failures have a tremendous impact on daily lifeand economic activities, requiring more resilient
networks. We at NTT laboratories aim toachieve robust networks that minimize service
impact by improving network adaptability tosystem failures and shorten recovery time by
improving network resilience. This article
describes our research and development efforts
in operation-related technologies to achieverobust networks.

Fail-safe

Fail-soft(Prevention of failures)(Minimizing the impact of failures)

Foolproof(Prevention of human error/operational support)

How to develop and verify networks to ensure reliability
Visualization and automation ofnetwork-failure conditions
Visualization(data, results, etc.)

Physical network

Nationwide centralized systemfacility expansion
Duplication

Service
Logical network(IP)
Logical network(Transmission)

All ICT
resource
information
periodImproved restoration methods
Guidance on optimal recovery procedures
Response training for specific failures

Increase

Transmission
equipment
Transmission
equipment

Resource extension
80%Expansion

High volume calls
Detect and destroy

NTT equipment

A

Area Aequipment

Area Bequipment

Area Cequipment

40%

Restrictions on inflow oflarge amounts of traffic

SenderDivision of nationwide
centralized system
Area division installation(Example) Resource utilization

Networkdevice

View from the Top

Abstract
NTT Innovative Devices has begun its journey as a manufacturer specialized inphotonics-electronics convergence devices. By designing, developing,
manufacturing, and selling strategic devices that make up the core infrastructure of
the Innovative Optical and Wireless Network (IOWN), the company strives to enablehigh-speed, large-capacity communications through innovative technologies focusedon photonics and contribute to reducing power consumption and building asustainable society in accordance with the IOWN concept. We asked Hidehiro
Tsukano, president & CEO, NTT Innovative Devices, about the company’s businessand his mindset as a top executive.

Networkdvice

https://www.ntt-review.jp/archive/2023/202312.html

Hidehiro Tsukano, President & CEO, NTT Innovative Devices

Development, design,and operation

122023

View from the Top

Quality

December 2023 Vol. 21 No. 12B

Mass transmission

Service division
Generalvoice

IoT

Quality management and assurance functions to confirm correct design and operation

Operation to Achieve Robust Networks
Technologies for Promptly Understanding Network Conditions When Large-scale System Failure
OccursNetwork Reliability Design and Control Technology for Robust Networks
NW-AI Self-evolving Framework for Fault-tolerant Robust Networks

Regular Articles

Regular Articles

To enable all many types of work to be conducted remotely as needed and overcome geographicalconstraints, NTT Human Informatics Laboratories is developing telepresence technology for understanding
the conditions at a remote location and remotely operate an artificial body, such as a robot, in real time.
Remote operation of an artificial body requires that conditions at a remote location be analyzed andinformation on operating the artificial body and on people and the environment in the vicinity of the artificial
body be fed back to the operator in real time. This article introduces the development of ahuman-behavior-understanding engine for automatically recognizing human behavior from camera video torecognize how people at a remote location might behave.

Human-behavior-understanding Engine: Video-recognition AI Library for Understanding HumanBehavior
Low-latency Function-dedicated Network Providing Sustained and Stable Services

Global Standardization Activities
Report on the Second Plenary Meeting of ITU-T SG2 Standardization of Telecommunication
Numbering

Practical Field Information about Telecommunication Technologies
Case Studies in 50-bit/s Leased Lines: Modem Communication Failure at Earth-return Circuit andthe Cause of Failure to Replace Metallic Transmission Line with Optical Cable

Human-behavior-understanding Engine: Video-recognition
AI Library for Understanding Human Behavior▼Abstract

Low-latency Function-dedicated Network Providing
Sustained and Stable Services▼Abstract
NTT is investigating a function-dedicated network (FDN), which consists of a combination of optical andwireless networks with edge computing, to provide services meeting various network requirements
simultaneously on the same infrastructure. NTT Access Network Service Systems Laboratories has been
researching and developing a low-latency FDN to achieve continuous and stable service provision bymeeting the service-performance requirements of low latency and low jitter. This article provides an overview
and features of our low-latency FDN.