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IEICE TRANSACTIONS on Communications

Open Access
Assessment of Node- and Link- Level Blocking and Creating Cost-Effective Networks in the Era of Large Bandwidth Services

Shuhei YAMAKAMI, Masaki NIWA, Yojiro MORI, Hiroshi HASEGAWA, Ken-ichi SATO, Fumikazu INUZUKA, Akira HIRANO

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Summary :

Link-level and node-level blocking in photonic networks has been intensively investigated for several decades and the C/D/C approach to OXCs/ROADMs is often emphasized. However, this understanding will have to change in the future large traffic environment. We herein elucidate that exploiting node-level blocking can yield cost-effective large-capacity wavelength routing networks in the near future. We analyze the impact of link-level and node-level blocking in terms of traffic demand and assess the fiber utilization and the amount of hardware needed to develop OXCs/ROADMs, where the necessary number of link fibers and that of WSSs are used as metrics. We clarify that the careful introduction of node-level blocking is the more effective direction in creating future cost effective networks; compared to C/D/C OXCs/ROADMs, it offers a more than 70% reduction in the number of WSSs while the fiber increment is less than ~2%.

Publication
IEICE TRANSACTIONS on Communications Vol.E102-B No.3 pp.510-521
Publication Date
2019/03/01
Publicized
2018/08/31
Online ISSN
1745-1345
DOI
10.1587/transcom.2018EBP3140
Type of Manuscript
PAPER
Category
Fiber-Optic Transmission for Communications

Authors

Shuhei YAMAKAMI
  Nagoya University
Masaki NIWA
  Nagoya University
Yojiro MORI
  Nagoya University
Hiroshi HASEGAWA
  Nagoya University
Ken-ichi SATO
  Nagoya University
Fumikazu INUZUKA
  NTT Corporation
Akira HIRANO
  NTT Corporation

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