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Optimal and Cost Efficient Algorithm for Virtual CDN Orchestration

机译:虚拟CDN编排的最优且经济高效的算法

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Virtual Content Delivery Network (vCDN) orchestration is necessary to optimize the use of resources and improve the performance of the overall SDN/NFV-based CDN function in terms of network operator cost reduction and high streaming quality. It requires intelligent and enticed joint SDN/NFV orchestration algorithm due to the evident huge amount of traffic to be delivered to end customers of the network. In this paper, a global vCDN architecture and an exact approach for finding the optimal path orchestration(s) and vCDN component instantiation(s) (OCPA) are proposed. Moreover, several scenarios are considered to quantify the OCPA behavior and to compare its efficiency in terms of caching and streaming cost, orchestration time, vCDN replication number, and other cost factors. Then, it is implemented and evaluated under different deployment flavors. Several scenarios are considered to study the algorithm's behavior and to quantify the impact of both network and system parameters.
机译:虚拟内容交付网络(vCDN)编排对于优化资源的使用并提高基于SDN / NFV的整体CDN功能的性能是必需的,这从网络运营商降低成本和提高流质量的角度而言。由于需要向网络的最终客户传递明显的大量流量,因此它需要智能且诱人的SDN / NFV联合编排算法。在本文中,提出了一种全局vCDN体系结构以及一种用于找到最佳路径编排和vCDN组件实例化(OCPA)的精确方法。此外,考虑了几种方案来量化OCPA行为,并根据缓存和流传输成本,编排时间,vCDN复制数量和其他成本因素来比较其效率。然后,在不同的部署方式下实施和评估它。考虑了几种方案来研究算法的行为并量化网络和系统参数的影响。

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