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Dempo H.,System Platforms Research Laboratories | Kami N.,System Platforms Research Laboratories | Takemura T.,Service Platforms Research Laboratories | Yanagisawa M.,Service Platforms Research Laboratories
NEC Technical Journal | Year: 2010

As the cloud computing environment spreads, importance of IT/network resource operation increases. For example, swiftness of configuration changes and flexibility of resource deployment are required. Therefore, this research and development has proceeded with research on the new autonomic operation control information network architecture, route information sharing technique, and virtualization equipment profiling technology. By interlocking these mutually, realization of the autonomic operation control infrastructure in the cloud computing environment is aimed.

Ichiro Y.,System Platforms Research Laboratories | Takaaki S.,System Platforms Research Laboratories | Shunsuke T.,IT Hardware Operations Unit | Katsuhiko Y.,System Platforms Research Laboratories
NEC Technical Journal | Year: 2010

The recent increase in the deployment of systems consisted of sensors and actuators has raised expectations for services that can contribute by their use to a reduction in the amount of unacceptable environmental loads. For the present, however, systems that can suitably support such services need to be deployed by optimizing each system according to the sensors and actuators that are used. The consequent high cost is tending to hinder the dissemination of such services. To deal with this situation, NEC is advancing R&D of management platform technologies that can reduce the deployment cost of this kind of service. This paper describes the recently developed technologies and their standardization and supporting activities. In addition, this paper also introduces an outline of a verification experiment demonstration performed at a convenience store chain.

Ishii Y.,System Platforms Research Laboratories | Shizuno T.,System Platforms Research Laboratories | Kogure J.,System Platforms Research Laboratories | Itabashi N.,System IP Core Research Laboratories | And 2 more authors.
NEC Technical Journal | Year: 2012

NEC has developed a Battery & Charger Integration System (BCIS) to support the burgeoning infrastructure for electric vehicles (EVs). The system controls several quick chargers and large capacity stationary batteries and thereby enables charging time reductions and peak charging power reductions while simultaneously charging multiple EVs. By conducting field trials as part of the Yokohama Smart City Project (YSCP) while linking with the Community Energy Management System (CEMS), we are aiming to examine how much BCIS can contribute to the demand and supply adjustment for community. This paper introduces an outline of the BCIS and of its field trials.

Hashimoto Y.,System Platforms Research Laboratories | Kamiya N.,Information and Media Processing Research Laboratories | Endo K.,System Platforms Research Laboratories | Tanaka T.,System Platforms Research Laboratories | And 8 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Advantages of optical links like small, lightweight and power efficient terminals are practical for high data rate services of disaster preparedness and environmental research. In this paper, we demonstrate experimental results of 40- Gbit/s optical free space transmission using single-polarization quadrature phase shift keying (SP-QPSK) modulation format and digital coherent detection. The digital coherent detection enabled a high sensitivity and a tolerance to transmission impairments, which have attractive features for free space transmission system. We developed a 50-Gbit/s SP-QPSK transmitter and offline-receiver with the optical antenna system. SP-QPSK optical modulation signal with a line rate of 50-Gbit/s including 20% FEC is employed for high receiver sensitivity. A cascade by EDFAs consisting of a low noise pre-EDFA and an optical level controlled EDFA is developed to compensate for level fluctuation without degrading receiver sensitivity. Maximal ratio combining algorithms and carrier phase estimation algorithms are used at the offline-receiver for QPSK signal detection. We succeeded 4-meter indoor free space transmission having same performance as that with fiber connection using the developed system. The optical received power was -42 dBm at bit error rate of 10 -3. While for outdoor 50-meter transmission, we confirmed the received bit error rate larger than FEC limit. © 2012 SPIE.

Nishihara M.,System IP Core Research Laboratories | Yun S.-H.,IT Software Operations Unit | Kanoh T.,System Platforms Research Laboratories
NEC Technical Journal | Year: 2010

Network virtualization, network programmability, and integration technology of network and computer resource are key technologies for creating and operating a cloud computing. The "ProgrammableFlow" solution, including all required features mentioned above, integrates the network resource and IT resource, hereby enabling implementation of a cloud-oriented data center with more flexibility and lower cost, and enabling the data center to be continuously developed and improved according to the demand of new functions or scale expansion.

Yamada K.,System Platforms Research Laboratories | Shiojiri H.,System Platforms Research Laboratories
NEC Technical Journal | Year: 2011

In order to improve the quality of life and also to achieve a sustainable society, new generation network services based on fine sensing and control in a physical world are increasingly in demand. M2M (Machine to Machine) communication technologies provide a platform for these services and their standardization and fundamental researches are promoted globally. This paper introduces the standardization trends of the M2M communication technologies, focusing on a remote device management function and discusses NEC's approach to their adoption.

Shimonishi H.,System Platforms Research Laboratories
NEC Technical Journal | Year: 2010

The OpenFlow technology that can control the switch function from an external control server is beginning to attract attention. We offer a method that builds a virtual infrastructure by creating a virtualized control plane on this control server. This paper describes the architecture of the overall virtual infrastructure and the network operating system as the control server integration platform.

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