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Special Feature: Trend of Network Security Technologies
 Network Security R&D for Safe and Secure Communications
Abstract
NTT Information Sharing Platform Laboratories is researching and developing network security technologies and responding to security incidents to protect the network from an increasing number of security threats and provide NTT customers with safe and secure communications.
- Traffic Monitoring and Analysis Technologies
Abstract
This article introduces trends in the development of technologies for monitoring and analyzing anomalous traffic in a multifaceted manner by utilizing traffic-flow information to solve the problem of attacks on the network.
- Anti-Malware Technologies
Abstract
This article introduces anti-malware technologies currently being researched and developed at NTT. Malware is used by cyber attackers to abuse users’ personal computers and servers, such as using them as bots, which exposes computer networks to security threats. Our anti-malware technologies can detect malware infection activities, collect malware, analyze infection routes, and analyze the malware itself. They will lead to a safe and secure network in which malware is filtered out.
- Virtual Smartphone over IP
Abstract
We describe the Virtual Smartphone over IP system, which allows users to create virtual smartphone images in a mobile cloud and customize each image to meet different needs. Users can easily and freely tap into the power of a data center by installing desired mobile applications remotely in one of these images. Because the mobile applications are controlled remotely, they are not constrained by the processing-power, memory, and battery-life limits of a physical smartphone.
- CSIRT Activities at NTT
Abstract
This article introduces CSIRT activities and NTT-CERT operated by NTT Information Sharing Platform Laboratories.
Regular Papers
- Frequency Domain Equalization Design for Coherent Optical Single Carrier Transmission
Abstract
In this paper, we present two coherent optical single carrier transmission (COSC) configurations with frequency domain equalization (FDE) for decoding the received signal with low calculation complexity. The FDE configuration, which uses a unique word (UW) as a cyclic prefix, compensates for phase noise by using the received signals corresponding to the UW. The overlap FDE (OFDE) configuration uses OFDE for chromatic dispersion compensation and uses time domain equalization for residual inter symbol interference compensation. Transmission performances for a 25-Gbit/s non-return-to-zero quadrature phase-shift keying (QPSK) single-polarization signal over single-mode fiber in the FDE and OFDE configurations are demonstrated. Since the insertion of a large UW degrades the transmission efficiency, the FDE configuration is effective in short-distance transmission. In long-haul transmission, OFDE achieved high transmission performance: in experiments, 25-Gbit/s COSC achieved a high Q factor of 11.6 dB for a transmission distance of 4320 km.
- Development of Universal Communication Aid and Its Design Concept––for Use by Hearing-impaired People and Foreign Travelers
Abstract
We are developing a communication aid called VUTE (visualized universal talking environment) that operates on portable information devices. VUTE is aimed at foreign travelers or hearing/speaking impaired people with a disability for speaking Japanese (or the local language). It displays motion pictograms that give users better comprehension. Furthermore, it is unique in incorporating the expressive manner of sign language in the design of the motion pictograms. We created a prototype of VUTE (VUTE 2009), which can be used to call an ambulance and/or fire engine in an emergency such as a sudden illness or fire. This paper describes the basic concept of our research project and describes the design concept and an overview of VUTE 2009. Finally, results of an evaluation test of VUTE 2009 are presented.
Global Standardization Activities
- Progress of CJK Standards Meeting and Testbed Studies
Abstract
This article briefly describes current progress of the Next-Generation Network Working Group (NGN-WG) of the CJK (China-Japan-Korea) Meeting on Information and Telecommunication Standards (CJK Standards Meeting). It also describes the study status of the CJK testbed discussed in NGN-WG. The CJK Standards Meeting was started in 2002 by the telecommunication standardization organizations of the three countries contracting to exchange information on the trends of the telecommunication industries in their countries and to cooperate on international standards activities.
External Awards/Papers Published in Technical Journals and Conferences Proceedings
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