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Open Access
Future Nationwide Optical Network Architecture for Higher Availability and Operability Using Transport SDN Technologies

Yoshihiko UEMATSU, Shohei KAMAMURA, Hiroki DATE, Hiroshi YAMAMOTO, Aki FUKUDA, Rie HAYASHI, Katsutoshi KODA

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Summary :

An optical transport network is composed of optical transport systems deployed in thousands of office-buildings. As a common infrastructure to accommodate diversified communication services with drastic traffic growth, it is necessary not only to continuously convey the growing traffic but also to achieve high end-to-end communication quality and availability and provide flexible controllability in cooperation with service layer networks. To achieve high-speed and large-capacity transport systems cost-effectively, system configuration, applied devices, and the manufacturing process have recently begun to change, and the cause of failure or performance degradation has become more complex and diversified. The drastic traffic growth and pattern change of service networks increase the frequency and scale of transport-capacity increase and transport-network reconfiguration in cooperation with service networks. Therefore, drastic traffic growth affects both optical-transport-system configuration and its operational cycles. In this paper, we give an overview of the operational problems emerging in current nationwide optical transport networks, and based on trends analysis for system configuration and network-control schemes, we propose a vision of the future nationwide optical-transport-network architecture expressed using five target features.

Publication
IEICE TRANSACTIONS on Communications Vol.E101-B No.2 pp.462-475
Publication Date
2018/02/01
Publicized
2017/08/08
Online ISSN
1745-1345
DOI
10.1587/transcom.2016EBN0013
Type of Manuscript
POSITION PAPER
Category
Transmission Systems and Transmission Equipment for Communications

Authors

Yoshihiko UEMATSU
  NTT Network Service Systems Laboratories
Shohei KAMAMURA
  NTT Network Service Systems Laboratories
Hiroki DATE
  NTT Network Service Systems Laboratories
Hiroshi YAMAMOTO
  NTT Network Service Systems Laboratories
Aki FUKUDA
  NTT Network Service Systems Laboratories
Rie HAYASHI
  NTT Network Service Systems Laboratories
Katsutoshi KODA
  NTT Network Service Systems Laboratories

Keyword