Survivable Grouped Routing Optical Networks with Dedicated Path Protection

被引:1
|
作者
Hasegawa, Hiroshi [1 ]
Mori, Yojiro [1 ]
Sato, Ken-ichi [1 ]
机构
[1] Nagoya Univ, Dept Comp Sci & Elect Engn, Nagoya, Aichi 4648603, Japan
关键词
grouped routing optical networks; coarse granular routing; resiliency; dedicated path protection; impairment-aware;
D O I
10.1587/transcom.2015EBP3482
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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 20070 for 400Gbps channels without any modification in hardware.
引用
收藏
页码:1435 / 1444
页数:10
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