Survivable Multipath Strategy Based on Spectrum Availability and Protection Bandwidth Sharing Degree-aware for Elastic Optical Networks

LIU Huanlin; ZHANG Mingjia; CHEN Yong; WANG Xin

doi:10.11999/JEIT161374

Volume 39 Issue 10

Oct. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(10): 2472-2478

LIU Huanlin, ZHANG Mingjia, CHEN Yong, WANG Xin. Survivable Multipath Strategy Based on Spectrum Availability and Protection Bandwidth Sharing Degree-aware for Elastic Optical Networks[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2472-2478. doi: 10.11999/JEIT161374

Citation:

LIU Huanlin, ZHANG Mingjia, CHEN Yong, WANG Xin. Survivable Multipath Strategy Based on Spectrum Availability and Protection Bandwidth Sharing Degree-aware for Elastic Optical Networks[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2472-2478. doi: 10.11999/JEIT161374

Citation:

LIU Huanlin, ZHANG Mingjia, CHEN Yong, WANG Xin. Survivable Multipath Strategy Based on Spectrum Availability and Protection Bandwidth Sharing Degree-aware for Elastic Optical Networks[J]. Journal of Electronics & Information Technology, 2017, 39(10): 2472-2478. doi: 10.11999/JEIT161374

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Survivable Multipath Strategy Based on Spectrum Availability and Protection Bandwidth Sharing Degree-aware for Elastic Optical Networks

doi: 10.11999/JEIT161374

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, 61571072), The Basic and Frontier Research Program of Chongqing (2015jcyjA40024)

Received Date: 2016-12-16
Rev Recd Date: 2017-03-23
Publish Date: 2017-10-19

Abstract

Abstract

In order to address the problems of the low Spectrum Utilization (SU) and the high Bandwidth Blocking Probability (BBP), a survivable Multipath strategy based on Sharing Degree of protection bandwidth and Spectrum Availability-Aware (M-SDSAA) is proposed. Firstly, the single-path routing is used to transmit the request. The first fit and last fit methods are adopted according to the request duration for the working path Routing and Spectrum Assignment (RSA). A link weight value is designed in accordance with the size of sharable spectrum block. Secondly, the multipath RSA mechanism is used to transmit the request when the single-path RSA fails. The multipath RSA adaptively chooses multiple paths priority with less number of spectrum slots to transmit the request. A shared light-path protection mechanism is used for the multipath provision. Lastly, a reprovisioning mechanism is proposed to further reduce the BBP when the request is blocked. This mechanism reconfigures the blocked request from the sub-optimal protection path to the optimal path occupied minimum protection bandwidth. The simulation results show that the M-SDSAA can improve the SU and decrease the BBP.
- Elastic optical networks,
- Survivable routing,
- Sharing degree,
- Reprovisioning,
- Bandwidth Blocking Probability (BBP)

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References(15)

References

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