Virtual Network Mapping in Elastic Optical Networks with Advance Reservation
Virtual Network Mapping in Elastic Optical Networks with Advance Reservation
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DOI：
10.1109/icc40277.2020.9149273
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发表时间：
2020-06
期刊：
影响因子：
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通讯作者：
Juzi Zhao;S. Subramaniam
中科院分区：
文献类型：
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作者：
Juzi Zhao;S. Subramaniam
弹性光网络能够高效灵活地分配光带宽以满足异构网络的需求，是下一代骨干网的理想选择。涉及多个数据中心之间的数据处理、分析和传输的科学应用可以建模为虚拟网络请求。对于延迟容忍应用，虚拟网络请求具有特定的截止日期，并且只要在截止日期之前向其分配足够的资源，就可以成功映射。本文研究了弹性光网络中提前预留虚拟网络请求的动态虚拟网络映射问题。我们提出了一个停止和恢复分配计划映射虚拟网络请求，以满足最后期限的限制和资源要求，其中的服务持续时间的请求被划分为不同的资源分配在不同的时期。仿真结果表明，所提出的方法相比，基线算法的请求阻塞率的有效性。
Elastic optical networks are promising candidates for next-generation backbone networks due to their capability to efficiently and flexibly allocate optical bandwidth to demands with heterogeneous requirements. Scientific applications involving data processing, analysis, and transmission among multiple data centers can be modeled as virtual network requests. For delay-tolerant applications, the virtual network request has a specific deadline and is successfully mapped as long as sufficient resources are allocated to it before the deadline. In this paper, we investigate the dynamic virtual network mapping problem for advance reservation virtual network requests in elastic optical networks. We propose a stop-and-resume allocation scheme to map virtual network requests in order to satisfy deadline constraints and resource requirements, where the service duration of a request is divided into periods with different resources being allocated in different periods. Simulation results are presented to show the effectiveness of the proposed approach compared with a baseline algorithm in terms of request blocking ratio.