弹性光网络中面向可靠性的链路故障概率保护与保护资源重配置策略

刘焕淋; 杜君丹; 易鹏飞; 陈勇; 张明佳

doi:10.11999/JEIT170150

弹性光网络中面向可靠性的链路故障概率保护与保护资源重配置策略

doi: 10.11999/JEIT170150

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)，重庆市科委基础与前沿研究项目(2015jcyjA40024)

计量
- 文章访问数: 1264
- HTML全文浏览量: 125
- PDF下载量: 205
- 被引次数: 0
出版历程
- 收稿日期: 2017-02-24
- 修回日期: 2017-07-14
- 刊出日期: 2017-11-19

Reliability-oriented Links Failure Probability Protection and Backup Reprovisioning Strategy for 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 Basic and Frontier Research Program of Chongqing (2015jcyjA40024)

摘要

摘要: 为解决弹性光网络中多链路故障保护的高保护资源冗余度问题，该文提出一种面向可靠性的多链路故障概率保护与保护资源重配置(ROPP-BR)策略。在ROPP-BR策略中，该文综合考虑频谱资源消耗和链路故障概率，分别设计了工作与保护路径的链路代价函数，以较小代价分别选择业务可靠性高且频谱资源消耗少的备选工作与保护光路。为满足业务差异化的可靠性需求，ROPP-BR策略设计了一种面向可靠性的概率保护机制，建立了业务可靠性评估模型，在满足业务的可靠性需求的限制下灵活地配置概率保护路径。当业务将要被阻塞时，该文提出一种基于极大团的保护光路重配置方法，对网络中的业务保护资源进行重配置，提高保护频隙的共享度。仿真表明，所提策略兼顾了带宽阻塞率与可靠性性能，有效地降低了保护资源冗余度。
- 弹性光网络 /
- 多链路故障 /
- 概率保护 /
- 可靠性 /
- 保护重配置
Abstract: Due to the high resource redundancy of full protection for requests multi-link failure in elastic optical networks, a strategy of Reliability Oriented Probability Protection and Backup Reprovisioning (ROPP-BR) is proposed. In the ROPP-BR, an adaptive adjustment working and protection link cost functions are devised to effectively select the alternative working and protection light-paths respectively which have high reliability and consume a small amount of spectrum resources in the multi-link failure. The cost function sufficiently considers the spectrum resources consumption and the link failure probability for both working and protection paths. Meanwhile, in order to satisfy the differentiated reliability requirements, a reliability oriented probability protection mechanism is introduced. And a theoretical analysis model is established to estimate the service reliability for light- paths in optical networks with probability protection, so the probability protection path can be flexibly configured under the restriction of the reliability requirements of the request. Moreover, for further improving protection sharing efficiency, when the request will be blocked for shortage of idle spectrum resource, a backup reprovisioning method based on maximum clique, is put forward to reconfigure the protection paths and spectrum resources. The simulation results indicate that the proposed ROPP-BR strategy can synthetically consider the performance of bandwidth blocking probability and service reliability, and effectively reduce the redundancy of protection resources.
- Elastic optical networks /
- Multi-link failure /
- Probability protection /
- Reliability /
- Backup reprovisioning

HTML全文

参考文献(13)

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.2012.03.002.

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.

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.2015.09.001.

CHEN Xin, LI Juhao, ZHU Paikun, et al. Fragmentation- aware routing and spectrum allocation scheme based on distribution of traffic bandwidth in elastic optical networks[J]. Journal of Optical Communications Networking, 2015, 7(11): 1064-1074. doi: 10.1364/JOCN.7.001064.

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.

NOGBOU G A, MICHEL B, AHMED D, et al. An efficient hybrid protection scheme with shared/dedicated backup paths on elastic optical networks[J]. Digital Communications and Networks, 2017, 3(1): 11-18. doi: 10.1016/j.dcan.2016.05. 001.

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: 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.

SAVAS S S, MA Chen, TORNATORE M, et al. Backup reprovisioning with partial protection for disaster-survivable software-defined optical networks[J]. Photonic Network Communications, 2016, 31(2): 186-195. doi: 10.1007/s11107- 015-0563-6.

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.

ZHAO Yongli, LIU Jinyan, ZHANG Jie, et al. Differentiated quality-of-protection provisioning with probabilistic-shared risk link group in survivable flexi-grid optical networks[J]. Optical Engineering, 2014, 53(6): 167-174. doi: 10.1117/ 1.OE.53.6.066111.

施引文献

资源附件(0)

访问统计