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Network Service Systems Laboratories
Overview of the Laboratories
Network Service Systems Laboratories are undertaking R&D of core network technologies for providing ubiquitous broadband services that are fast, easy to use, safe, secure, and available anytime and anywhere. Our specific R&D topics include the development of a next-generation network, which will serve as the networking infrastructure in the coming era of full-scale FTTH; high speed and large-capacity photonic backbone network technology to provide network services that are fast and easy to use; highly reliable network control platform technology to provide safe and secure services; and network operation technology to prevent long-term service interruptions, which are component technologies backing up the next-generation network.
Greetings
NTT group is working on the dissemination and expansion of the next-generation network so that current subscribers of fixed-line telephone, ISDN and FLETfS services can use various services based on the network.
The next-generation network is a network that provides fixed-line telephone and mobile communication convergence services, communication and broadcast convergence services by quality of services and IP multi-cast technologies, internet and fixed-line convergence services, IPv4/IPv6 internet access services, advanced network services available for various business scenes, as well as high-quality and highly reliable call services characterized by the latest optical communication technologies, IP technologies and software technologies, which will make it possible for customers to create new businesses based on them. In other words, the next-generation network is a network that is characterized by the benefits of both a reliable and stable fixed-line network and an economical and flexible IP network.
The NTT next-generation network is compliant with the next generation network (NGN) that has been discussed mainly in ITU-T and consists of four layers: user network, access network, core network, and service & application control. NTT Network Service Systems Laboratories is undertaking research and development centering on the layers of core network and service control in the next-generation network that comprise the heart of carrier networks.
In addition, we are researching both base technologies that achieve various kinds of services over the next-generation network and element technologies that are promising for future networks after the next-generation network.
Network Service System Laboratories will pursue and discern the technical trends in global standardization and positively innovate superior R&D accomplishments from within and without, having a sense of speed and a strong competitiveness. Moreover, we will steadily work towards achieving new services that a large number of people expect the next-generation network to provide and continue our efforts to improve functions, performance and reliability.
General Manager Nobuyuki Watanabe
(As of July 1st, 2011)
Projects
- Network Strategy Project
- Next Generation Network Architecture Project
- First Promotion Project
- Second Promotion Project
- Third Promotion Project
- Fourth Promotion Project
- Fifth Promotion Project
- Sixth Promotion Project
- Emerging Communication Architecture Project
- Broadband Network Systems Project
(As of July 1, 2011)
Main Research Areas
| Next Generation Network Operation Technologies |
| Network infrastructure technology for future network | New Network Control Nodes |
(1) Next-Generation Network (NGN)
The Next-Generation Network(NGN) is a integrated services IP network, which provides telephone, video delivery and the Internet access. The NGN satisfies all of high-reliability, security, which NTT has acquired in telephone technology, flexibility, and economic efficiency of the Internet standard IP technology.
In the development of the NGN, NTT were working on session control servers, transmission systems, link systems and operation systems. As a result, NTT introduced those commercial systems ahead of the rest of world. Session control servers controls QoS to support communication with a variety of QoS conditions on the integrated network. Transmission and link systems realizes high-speed and large capacity IP transfer. Operation systems support those systems.
Recently, NTT are working mainly on Fixed Mobile Convergence (FMC) and upgrading content delivery function (IPTV). Moreover, NTT also develops security technology and reliability technology that can provide safe and secure communication environments.
(2) Core technology for Multi-layer packet transport network
An economical high-capacity network capable of supporting a variety of services for New-generation network
By taking advantage of the characteristics of fiber-optics to provide a wide range of services, such as video communication, we are developing a transport network that can carry a large volume of traffic efficiently. Specifically, our R&D topic is high-capacity multi-layer packet transport network unifying 100G photonic physical layer and data link layer, which provide energy-saving and economical networks.
(3) Next Generation Network Operation Technologies
To provide high-quality and high-reliability services on a large-scale network, such as NGN, Operations Support System are required. we have been researching and developing advanced high-capacity fault detection(ping, Traceroute, SNMP), and fault analysis (fault equipments detection, extraordinary traffic detection) .
(4) Network infrastructure technology for future network
Establishing core technology for future edge node and network control technology
To achieve a network that can flexibly and efficiently respond to change in its scale and diversification in the future, we are studying three technologies. (1) Network virtualization technology enables the separation of network resources for the optical and IP layers, such as virtualization servers, routers, optical switches etc. and to efficiently assigns such resources to two or more overlay networks according to traffic demands. (2) Scalable packet service technology archives the performance-optimized logical routers by separating the control-plane functions and forwarding-plane functions from the routers. (3) Optical packet switch technology achieves both low power consumption and high speed packet switching by using the advanced optical devices.
(5) New Network Control Nodes
Due to the increase of broadband users and the diversification of network services, nodes (servers and routers) in a future network are required to handle more and more traffic. In this situation, current scale-up approach, that means to add resources to a single system, brings to more extent of the system breakdown. To solve this problem, we focus on the scale-out approach, that is to bundle a number of servers to construct a network node. Our research theme also includes the adjustment of the number of servers dynamically in response to changing traffic, to achieve more resource utilization.
