Introduction to the Functional Architecture of NGN

Morita, Naotaka; Imanaka, Hideo

doi:10.1093/ietcom/e90-b.5.1022

Cited by 14 publications

(4 citation statements)

References 10 publications

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“…In December 2006, Nippon Telegraph and Telephone Corporation (NTT) group commenced a one-year field trial for its Next Generation Network (NGN) [1]. The NGN is a stable and reliable IP-based telecommunication network that provides IP telephone service with a quality of service (QoS) function.…”

Section: Introductionmentioning

confidence: 99%

Development of wideband handset for high quality IP telephone service trial

Okamoto

Noguchi

Hiwasaki

et al. 2014

2014 IEEE 3rd Global Conference on Consumer Electronics (GCCE)

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Since 2007, high quality IP telephone service has been provided over a Next Generation Network (NGN) developed by Nippon Telegraph and Telephone Corporation (NTT) Group of Japan. Prior to the commencement of service provision, a wideband telephone handset was developed on an experimental basis and tested in a field trial to verify service validity. The handset demonstrated improved characteristics over those of conventional telephone handsets.

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Section: Introductionmentioning

confidence: 99%

Development of wideband handset for high quality IP telephone service trial

Okamoto

Noguchi

Hiwasaki

et al. 2014

2014 IEEE 3rd Global Conference on Consumer Electronics (GCCE)

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“…Moreover, thanks to wider bandwidth, appropriate network design, and operational management, IP phone services are achieving almost the same voice quality as provided by switched networks. In the future, as nextgeneration networks (NGNs) are introduced [1] [2], it is expected that video delivery of high-definition quality images will become possible with IP network technology.…”

Section: Introductionmentioning

confidence: 99%

Proposal of new generation mobile system cooperating with virtualized network

Ishikawa

Shinji

Nakamura

et al. 2011

2011 IEEE Radio and Wireless Symposium

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In this paper, we discuss the functionality of mobile systems in a new generation network. Our goal is to provide mission-critical services using the mobile systems in the fields such as energy, disaster prevention, and medical care. It is necessary to guarantee both reliability and quality of communication for these services. We show that the future mobile systems should have three functions for cooperating with virtualized backbone networks and applications. We show the system architecture for achieving the functions, and preliminary evaluation on a testbed environment.

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“…All-IP networks including next-generation network (NGN) [1], [2], in which IP technology is used to integrate all services, are being studied or introduced in earnest worldwide. All-IP networks support a wide variety of services, including not only email, web access, blog and video delivery services but also fixed and mobile phone services, television and sensor data delivery services.…”

Section: Introductionmentioning

confidence: 99%

Proposed congestion control method reducing the size of required resource for all-IP networks

Hatakeyama

Osana

Tanabe

et al. 2009

2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing

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In all-IP networks, where all types of services are integrated using IP technology, it is highly likely that traffic congestion in one service causes congestion in other services, or that abnormal traffic in one service degrades the quality of other services. Assuming that multiple types of resources are simultaneously allocated to each service in all-IP networks, this paper proposes a smart congestion control method which reduces the size of required resource for congested resource type, instead of restricting all service requests. Then, this paper proposes the user service specifications for the proposed congestion control, and clarifies the algorithm to decide the optimal size of required resource to be reduced, based on the load offered to the system. It is demonstrated by simulation evaluations that the proposed congestion control method can handle more requests compared with the conventional methods and relieve the congestion.

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Introduction to the Functional Architecture of NGN

Cited by 14 publications

References 10 publications

Development of wideband handset for high quality IP telephone service trial

Development of wideband handset for high quality IP telephone service trial

Proposal of new generation mobile system cooperating with virtualized network

Proposed congestion control method reducing the size of required resource for all-IP networks

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