2024-03-29T08:46:51Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00022961
2023-01-16T04:11:34Z
320:321:322
Survivable Grouped Routing Optical Networks with Dedicated Path Protection
HASEGAWA, Hiroshi
67754
MORI, Yojiro
67755
SATO, Ken-ichi
67756
grouped routing optical networks
coarse granular routing
resiliency
dedicated path protection
impairment-aware
A novel resilient coarse granularity optical routing network architecture that adopts finely granular protection and finely granular add/drop is presented. The routing scheme defines optical pipes such that multiple optical paths can be carried by each pipe and can be dropped or added at any node on the route of a pipe. The routing scheme also makes it possible to enhance frequency utilization within pipes, by denser path packing in the frequency domain, as we recently verified. We develop a static network design algorithm that simultaneously realizes the independence of working and backup paths and pipe location optimization to efficiently carry these paths. The design algorithm first sequentially accommodates optical paths into the network, then tries to eliminate sparsely utilized fibers and iteratively optimizes frequency slot/wavelength assignment in each coarse granular pipe so as to limit the impairment caused by dropping the optical paths adjacent in the frequency domain. Numerical experiments elucidate that the number of fibers in a network can be reduced by up to 20% for 400Gbps channels without any modification in hardware.
journal article
The Institute of Electronics, Information and Communication Engineers
2016-07
application/pdf
IEICE Transactions on Communications
7
E99B
1435
1444
http://hdl.handle.net/2237/25142
0916-8516
https://nagoya.repo.nii.ac.jp/record/22961/files/e99-b_7_1435.pdf
eng
https://doi.org/10.1587/transcom.2015EBP3482
http://www.ieice.org/jpn/trans_online/index.html
Copyright (C) 2016 IEICE