Adaptive and Integrated Control of Optical Routing Metro Networks

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H02150
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 21020:Communication and network engineering-related
• Research Institution: Nagoya University
• Principal Investigator: Hasegawa Hiroshi 名古屋大学, 工学研究科, 教授 (40323802)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: フォトニックネットワーク / ネットワーク制御 / 波長経路割り当て / 超高密度波長多重 / ファイバ粒度ルーティング

Outline of Final Research Achievements

Cost-effective network upgrade methods for current optical networks and dynamic control of next-generation fiber-granularity routing optical networks were studied. In order to resolve the first issue, an optical network architecture with heterogeneous WDM-Density was proposed; optical signal density in a fiber is adaptively changed according to traffic concentration in a network. The architecture enables us to upgrade current optical networks while keeping existing facilities as much as possible.
For the second issue, a fiber-granularity routing network architecture was studied and its performance evaluation was conducted. The fiber-granularity routing significantly simplifies optical nodes in a network and thus its cost-effectiveness is crucially important for metro networks. The performance degradation in dynamic control environment can be supressed by the introduction of wavelength converters and the use of sophisticated network design and control methods developed in the project.

Free Research Field

フォトニックネットワーク

Academic Significance and Societal Importance of the Research Achievements

光ネットワークは現在の情報通信社会の基盤をなしており、その継続的な大容量化を実現しつつ、膨大な装置コスト及び敷設コストを抑制することが急務である。本研究では、既存ネットワーク設備の効率的な利用により、最低限の投資により光ネットワーク容量を拡大すること、および新たに敷設するネットワークについて、簡素なノード装置を利用した場合における性能レベルを世界で初めて明らかにし、将来の光ネットワークのあるべき姿について一定の知見を与えている。