Multi-link Failure Probability Protection Strategy Based on Minimum Fault Risk Loss in Elastic Optical Networks

LIU Huanlin; YI Pengfei; ZHANG Mingjia; CHEN Yong

doi:10.11999/JEIT161159

Volume 39 Issue 8

Aug. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(8): 1819-1825

LIU Huanlin, YI Pengfei, ZHANG Mingjia, CHEN Yong. Multi-link Failure Probability Protection Strategy Based on Minimum Fault Risk Loss in Elastic Optical Networks[J]. Journal of Electronics & Information Technology, 2017, 39(8): 1819-1825. doi: 10.11999/JEIT161159

Citation:

LIU Huanlin, YI Pengfei, ZHANG Mingjia, CHEN Yong. Multi-link Failure Probability Protection Strategy Based on Minimum Fault Risk Loss in Elastic Optical Networks[J]. Journal of Electronics & Information Technology, 2017, 39(8): 1819-1825. doi: 10.11999/JEIT161159

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Multi-link Failure Probability Protection Strategy Based on Minimum Fault Risk Loss in Elastic Optical Networks

doi: 10.11999/JEIT161159

1.
(Key Laboratory of Optical Communications and Networks, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)
2.
(School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)

Funds:

The National Natural Science Foundation of China (61275077), The Scientific Research Fund of Chongqing Municipal Commission (KJ1400421), The Basic and Frontier Research Program of Chongqing (2015jcyjA40024)

Received Date: 2016-10-28
Rev Recd Date: 2017-03-17
Publish Date: 2017-08-19

Abstract

Abstract

Due to the high resource redundancy of full protection for requests multi-link failure in elastic optical networks, the strategy of Minimum Fault Risk Loss Probability Protection (MFRL-PP) is proposed to protect the request with high spectrum-efficiency. In the MFRL-PP, a link cost function integrated considering the link payload and fault risk is designed to choose the protection lightpath, which has minimum fault risk and consumes a small amount of spectrum resource. When the minimum fault risk lightpath is unavailable for shortage of idle spectrum resource, for further reducing the failure risk of the probability protection lightpath, a minimum fault risk loss probability protection mechanism for the non-symmetrical flow is designed to split the flow into two sub-flows for easily selecting the protection branch lightpath with the minimum fault risk loss. Moreover, in the phase of spectrum allocation for the lightpath, for reducing the number of spectrum fragmentations, a spectrum allocation strategy based on the maximum spectrum coincidence degree is put forward to allocate spectrum resource. The simulation results indicate that the proposed MFRL-PP algorithm can improve the spectrum utilization, and provide a better tradeoff between the bandwidth blocking probability and fault risk degree.
- Elastic optical networks,
- Multi-link failure,
- Minimum fault risk loss,
- Non symmetrical traffic flow,
- Bandwidth blocking probability

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References(16)

References

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