DRAMA+: Disaster Management With Mitigation Awareness for Translucent Elastic Optical Networks
DRAMA+: Disaster Management With Mitigation Awareness for Translucent Elastic Optical Networks
复制标题
DOI：
10.1109/tnsm.2022.3189362
复制
发表时间：
2022-09
影响因子：
5.3
通讯作者：
Rujia Zou;H. Hasegawa;M. Jinno;S. Subramaniam
中科院分区：
文献类型：
--
作者：
Rujia Zou;H. Hasegawa;M. Jinno;S. Subramaniam
弹性光网络 (EON) 已成为满足 5G 和云应用需求急剧增长的有吸引力的候选者。由于资源分配的灵活性，EON 有望提供高频谱利用率。在半透明EON中，可以通过部署再生器进一步提高频谱效率。由于其极高的灵活性，开发有效的机制和策略来确保半透明 EON 的生存能力是一个具有挑战性的问题。在本文中，我们考虑半透明 EON 中的减灾。我们通过引入减灾区的概念提出了一种新的灾害管理方法，该方法确定了灾区周围的一个区域，其中可以通过降级服务（带有惩罚）重新配置光路，以提高整体性能。我们制定了整数线性程序（ILP）来最小化灾难后由于服务退化而造成的损失，并提出了一种名为“具有缓解意识和3R再生器的灾难管理算法”的启发式算法（DRAMA+）。仿真结果表明，所提出的算法在总惩罚和阻塞率方面比传统的灾难恢复算法具有更好的性能。
Elastic optical networks (EONs) have emerged as attractive candidates to satisfy the dramatic growth of demand in 5G and cloud applications. EONs promise to provide high spectrum utilization due to flexibility in resource assignment. In translucent EONs, the spectrum efficiency can be further improved by deploying regenerators. Because of their extremely high flexibility, developing efficient mechanisms and strategies to ensure the survivability of translucent EONs is a challenging problem. In this paper, we consider disaster mitigation in translucent EONs. We propose a new approach to disaster management by introducing the concept of mitigation zone, which identifies a region surrounding the disaster zone wherein lightpaths may be reconfigured with degraded service (with a penalty) in order to improve overall performance. We formulate an integer linear program (ILP) to minimize the penalty due to service degradation after a disaster, and present a heuristic algorithm named Disaster Management Algorithm with Mitigation Awareness and 3R regenerators (DRAMA+). Simulation results demonstrate that the proposed algorithms have a better performance in terms of total penalty and blocking ratio than conventional disaster recovery algorithms.