Multi-link Failure Probability Protection Strategy Based on Minimum Fault Risk Loss in Elastic Optical Networks
LIU Huanlin① YI Pengfei① ZHANG Mingjia① CHEN Yong②
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)
Due to the high resource redundancy of full protection for request’s 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.
刘焕淋,易鹏飞,张明佳,陈勇. 最小故障风险损失的弹性光网络多链路故障概率保护策略[J]. 电子与信息学报, 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. JEIT, 2017, 39(8): 1819-1825.
ZHOU Hui, MAO Shiwen, and AGRAWAL P. Optical power allocation for adaptive transmissions in wavelength-division multiplexing free space optical networks[J]. Digital Communications and Networks, 2015, 1(3): 171-180. doi: 10.1016/j.dcan.2015.09.004.
[2]
LEZAMA F, CASTANON G, SARMIENTO A M, et al. Differential evolution optimization applied to the routing and spectrum allocation problem in flexgrid optical networks[J]. Photonic Network Communications, 2016, 31(1): 129-146. doi: 10.1007/s11107-015-0558-3.
LIU Huanlin, SUI Meng, XU Yifan, et al. A method of optical grooming for distance-adaptive and effective sharing path-aware[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1955-1970. doi: 10.11999/ JEIT141442.
BAO Ninghai, LIU Xiang, ZHANG Zhizhong, et al. Survival protection algorithm in WDM energy-efficient optical network[J]. Journal of Chongqing University of Posts and Telecommunications (Natural Science Edition), 2012, 24(3): 278-282. doi: 10.3979/j.issn.1673-825X.2015.03.002.
[8]
CHEN Bowen, ZHANG Jie, ZHAO Yongli, et al. Multi-link failure restoration with dynamic load balancing in spectrum-elastic optical path networks[J]. Optical Fiber Technology, 2012, 18(1): 21-28. doi: 10.1016/j.yofte.2011. 10.002.
[9]
CHEN Bowen, ZHANG Jie, ZHAO Yongli, et al. Spectrum- block consumption for shared-path protection with joint failure probability in flexible bandwidth optical networks[J]. Optical Switching & Networking, 2014, 13(4): 49-62. doi: 10.1016/j.osn.2014.01.001.
[10]
CHEN Bowen, ZHANG Jie, ZHAO Yongli, et al. Spectrum-aware survivable strategies with failure probability constraints under static traffic in flexible bandwidth optical networks[J]. Journal of Lightwave Technology, 2014, 32(24): 4823-4836. doi: 10.1109/JLT.2014.2366557.
[11]
CHEN Xiaoliang, TORNATORE M, ZHU Shilin, et al. Flexible availability-aware differentiated protection in software-defined elastic optical networks[J]. Journal of Lightwave Technology, 2015, 33(18): 3872-3882. doi: 10.1109/ JLT.2015.2456152.
[12]
ZHANG Jie, LÜ Chunhui, ZHAO Yongli, et al. A novel shared-path protection algorithm with correlated risk against multiple failures in flexible bandwidth optical networks[J]. Optical Fiber Technology, 2012, 18(6): 532-540. doi: 10.1016/ j.yofte.2012.09.002.
[13]
SCARAFICCI R A and FONSECA N L S D. Alternative routing and zone-based spectrum assignment algorithm for flexgrid optical networks[C]. IEEE International Communications Conference, Sydney, Australia, 2014: 3295-3300. doi: 10.1109/ICC.2014.6883829.
