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Upgrade-aware virtual infrastructure mapping in software-defined elastic optical networks

机译：软件定义的弹性光网络中可感知升级的虚拟基础架构映射

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摘要

An emerging use case in software-defined networking is to provide efficient mapping of multiple virtual infrastructures (VIs) simultaneously over the same physical substrate (PS) which can increase the resource utilization of the PS, thus improving its provider's revenue. In this paper, for the first time, we investigate a practical and yet theoretically challenging issue related to dynamic Ⅵ mapping in software-defined elastic optical networks while considering the presence of possible upgrade of the VIs and the optical layer constraints, which has not been addressed in any of the existing studies. More specifically, we investigate the following aspects: (1) Which revenue models are appropriate? (2) How to map a new Ⅵ request or to upgrade an existing Ⅵ to maximize the PS providers revenue? In particular, we study two different revenue models in terms of the incremental pricing policy and the binding pricing policy and propose a number of efficient heuristics to solve the upgrade-aware Ⅵ mapping (U-VIM) problem. We also perform comprehensive performance evaluation in different scenario, and the results show that plan-ahead is a desirable strategy when conducting Ⅵ mapping in the presence of Ⅵ upgrade.
机译：软件定义网络中的一种新兴用例是在同一物理基板（PS）上同时提供多个虚拟基础架构（VI）的有效映射，这可以提高PS的资源利用率，从而提高其提供商的收入。在本文中，我们首次研究了与软件定义的弹性光网络中的动态Ⅵ映射有关的实际但在理论上具有挑战性的问题，同时考虑了VI的可能升级和光学层约束的存在，但尚未在任何现有研究中均已解决。更具体地说，我们研究以下方面：（1）哪种收入模型合适？ （2）如何映射新的Ⅵ请求或升级现有的Ⅵ以最大化PS提供者的收入？特别是，我们根据增量定价策略和约束定价策略研究了两种不同的收入模型，并提出了许多有效的启发式方法来解决升级感知Ⅵ映射（U-VIM）问题。我们还在不同情况下进行了综合性能评估，结果表明，在存在Ⅵ升级的情况下进行Ⅵ映射时，提前计划是一种理想的策略。

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