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

刘焕淋; 易鹏飞; 张明佳; 陈勇

doi:10.11999/JEIT161159

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

doi: 10.11999/JEIT161159

1.
(重庆邮电大学光纤通信技术与网络重点实验室重庆 400065) ②(重庆邮电大学自动化学院重庆 400065)

基金项目:

国家自然科学基金(61275077)，重庆市教委基金(KJ 1400421)，重庆市科委基础与前沿研究项目(2015jcyjA40024)

计量
- 文章访问数: 1276
- HTML全文浏览量: 182
- PDF下载量: 276
- 被引次数: 0
出版历程
- 收稿日期: 2016-10-28
- 修回日期: 2017-03-17
- 刊出日期: 2017-08-19

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

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)

摘要

摘要: 针对弹性光网络中多链路故障100%保护的资源消耗冗余度较高的问题，该文提出一种最小故障风险损失的概率保护(MFRL-PP)策略，在多链路故障时为业务提供高效率的概率保护。在MFRL-PP策略中，该文设计了一个综合考虑链路负载和故障风险的代价函数，为业务选择故障风险小且频谱资源消耗少的概率保护光路。当最小故障风险路径无法传输时，为进一步降低概率保护光路的故障风险损失，该文还设计了一种非对称业务流分流的最小故障风险损失概率保护机制，以便选择故障风险损失最小的分流路径组作为传输光路。同时，在传输光路的频谱分配阶段，提出了基于最大频谱重合度的可用频谱块选择策略，以减少频谱碎片的产生。仿真结果表明所提策略不仅有效地提升了频谱利用率，还较好地实现了带宽阻塞率与故障风险的平衡。
- 弹性光网络 /
- 多链路故障 /
- 最小故障风险损失 /
- 非对称业务流 /
- 带宽阻塞率
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

HTML全文

参考文献(16)

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.

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.

刘焕淋, 岁蒙, 徐一帆, 等. 基于距离自适应和有效共享路径感知的光疏导方法[J].电子与信息学报, 2015, 37(8): 1955-1970. doi: 10.11999/JEIT141442.

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.

刘焕淋, 徐一帆, 陈勇, 等. 基于频谱感知的业务分割-合并的弹性光网络资源分配策略[J]. 电子与信息学报, 2016, 38(4): 892-898. doi: 10.11999/JEIT150842.

LIU Huanlin, XU Yifan, CHEN Yong, et al. Spectrum-aware traffic split-merge resource allocation strategy for elastic optical networks[J]. Journal of Electronics Information Technology, 2016, 38(4): 892-898. doi: 10.11999/JEIT150842.

ZHANG Zhenrong, XIAO Mei, WU Minghou, et al. Adaptive subcarrier-distribution algorithm for routing and spectrum allocation in OFDM-based elastic optical networks[J]. Photonic Network Communications, 2014, 28(3): 225-231. doi: 10.1007/s11107-014-0446-2.

LIU Huanlin, LI Ruiyan, CHEN Yong, et al. Resource efficiency improved approach for shared path protection in EONs[J]. Photonic Network Communication, 2017, 33(1): 19-25. doi: 10.1007/s11107-016-0612-9.

鲍宁海, 刘翔, 张治中, 等. WDM节能光网络中的抗毁保护算法研究[J]. 重庆邮电大学学报(自然科学版), 2012, 24(3): 278-282. doi: 10.3979/j.issn.1673-825X.2012.03.002.

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.

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.

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.

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.

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.

ZHANG Jie, L 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.

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.

施引文献

资源附件(0)

访问统计