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December 2011 Vol. 9 No. 12 |
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View from the Top 
Ryuji Yamada, President and CEO, NTT DOCOMO
Abstract
Following the Great East Japan Earthquake of March 2011, NTT DOCOMO worked fervently to restore facilities. With nearly all facilities restored in only about a month and a half, what was it about NTT DOCOMO that helped to achieve such a speedy response? We asked President and Chief Executive Officer Ryuji Yamada to tell us about the ONE docomo in-house campaign to raise customer satisfaction and the diverse services that have been born from this unified spirit at NTT DOCOMO.
Feature Articles: Cloud Computing Platform Technologies for Social Infrastructure
- NTT Group Initiatives for Achieving Societal Cloud Infrastructure
Abstract
Cloud technology, which is a major trend in the field of information and communications technology, is expected to develop as a core technology for broad support of societal infrastructure in the future. In this article, we overview overall trends in cloud business and technology and then introduce the directions that the NTT Group is pursuing in cloud business, NTT R&D initiatives toward achieving them, and our main technical developments.
- Provisioning Infrastructure Supporting Cloud Operations
Abstract
With cloud technology, computing resources are provided dynamically in response to requests from users, so the function that manages normal operation of these resources (the management system) is very important. In this article, we describe a provisioning infrastructure, which is one of the main components of the management system within Common IT Bases over Cloud Computing (CBoC), a cloud infrastructure system being developed by the NTT Information Sharing Platform Laboratories (IT: information technology).
- Large-scale Distributed Data Processing Platform for Analysis of Big Data
Abstract
Cloud technology can scale horizontally (scale out) through the addition of servers to handle more data and enables the analysis of large volumes of data (known as big data). This has led to innovation in the form of new services that create added value such as providing recommendations on the basis of attributes extracted from the big data. In this article, we describe technology and services implemented with large-scale data processing, the development of a large-scale distributed data processing platform, and technology fostered by the program design and system level testing/verification.
- Network Virtualization Technology for Cloud Services
Abstract
The network virtualization technology needed to effectively and efficiently construct and operate a cloud is already in place. In this article, we introduce the trends in the latest network virtualization technology for the cloud environment and its fields of application.
- Cloud Traceability (CBoC TRX)
Abstract
In this article, we introduce a cloud forensics service for cloud security that can visualize a sequence of operations and the lifecycle of data and a traceability platform for implementing this service. This visualization should overcome the worries and concerns about data leakage and unintended deletion that the majority of potential cloud users have over the inability to see the progress or operation of cloud services. The infrastructure has an architecture that allows various functions to be added or substituted, allowing contributes to overcoming large traceable logs of various types to be linked together to suit users’ needs.
- FreeCloud: A Trial Service for OpenStack
Abstract
This article describes NTT’s work on the OpenStack trial service FreeCloud, which is intended to improve the operability of OpenStack and expand the set of operation tools.
Regular Articles - Power-management-circuit Techniques for Low-power Intermittent LSI Operation in Wireless Applications
Abstract
Power-management-circuit techniques for low-power intermittent LSI (large-scale integrated circuit) operation are discussed for various wireless transceiver designs. For an RFID (radio-frequency identification) application, the most important issue is reducing the power of the clock timer; we used an analog RC (resistor-capacitor) timer circuit with megaohm resistors. For a sensor node that has a power generator, the ability to operate with a nanowatt-level power supply is essential; we devised a two-stage power management circuit with a subnanowatt voltage-detection circuit. For wide-area-ubiquitous-network transceivers, the power-management circuit should supply 100 mA of current in the active mode and reduce the leakage current to the nanoampere level; we developed a regulator circuit with a reversely biased nMOS/pMOS cascode switch to reduce the leakage current and with a DC-DC converter for supplying sufficient current without any increase in power consumption.
- Fast Algorithm for Monitoring Data Streams by Using Hidden Markov Models
Abstract
We describe a fast algorithm for exact and efficient monitoring of streaming data sequences. Our algorithm, SPIRAL-Stream, is a fast search method for finding the best model among a set of candidate hidden Markov models (HMMs) for given data streams. It is based on three ideas: (1) it clusters model states to compute approximate likelihoods, (2) it uses several granularities of clustering and approximation level of likelihood values in search processing, and (3) it focuses on the efficient computation of only promising likelihoods by pruning out low-likelihood state sequences. Experiments verified its effectiveness and showed that it was more than 490 times faster than the naive method.
Global Standardization Activities
Practical Field Information about Telecommunication Technologies - Visualization of Problems with Wireless Local Area Networks
Abstract
This article introduces a tool for visualizing problems related to wireless local area network (WLAN). NTT EAST has developed the wireless trouble shooting tools in order to solve Electromagnetic compatibility (EMC) problems in the field. It is the eighth in a bimonthly series on the theme of practical field information about telecommunication technologies. This month’s contribution is from the EMC Engineering Group, Technical Assistance and Support Center, Maintenance and Service Operations Department, Network Business Headquarters.
External Awards/Papers Published in Technical Journals and Conference Proceedings
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