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Resource efficiency improved approach for shared path protection in EONs

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Abstract

For improving the resource efficiency of dynamic shared path protection in elastic optical networks, a survivable RSA (SRSA)-based heuristic algorithm is proposed in the paper. In SRSA, an adaptive adjustment link cost function is devised to effectively select working and protection paths. The cost function sufficiently considers available spectrum resources and the length of light paths for both working and protection paths. In order to achieve high resource efficiency, a spectrum allocation strategy named minimal cost stable set is proposed to allocate spectrum for protection paths with respect to the resource efficiency in the link cost function. And the graph coloring algorithm is introduced to select the shared protection path with the highest resource efficiency for the request. Compared with the shared path protection and dynamic load balancing shared path protection, simulation results show that the proposed SRSA decreases bandwidth blocking probability and achieves high resource efficiency.

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Acknowledgments

This research was funded by the scientific research fund of Chongqing municipal commission (KJ1400421), by national nature science foundation of China (NSFC 61275077, 61571072), and by the basic and frontier research program of Chongqing (CSTC 2015jcyjA40024).

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  1. Key Lab of Optical Communication and Network, School of Communication and Information Engineering, Chongqing University of Posts and Telecom (CQUPT), Chongwei Road #2, Nanan District, Chongqing, 400065, China

    Huanlin Liu, Ruiyan Li, Yong Chen & Xin Wang

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  1. Huanlin Liu
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  2. Ruiyan Li
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  3. Yong Chen
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  4. Xin Wang
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Correspondence to Huanlin Liu.

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Liu, H., Li, R., Chen, Y. et al. Resource efficiency improved approach for shared path protection in EONs. Photon Netw Commun 33, 19–25 (2017). https://doi.org/10.1007/s11107-016-0612-9

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  • DOI: https://doi.org/10.1007/s11107-016-0612-9

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