Traffic-Weighted Availability-Guaranteed Network Slice Composition with VNF Replications
Traffic-Weighted Availability-Guaranteed Network Slice Composition with VNF Replications
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DOI：
10.1109/icc45855.2022.9839242
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发表时间：
2022-05
期刊：
影响因子：
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通讯作者：
Riti Gour;Varin Sikand;Joseph Chang;Zhouxiang Wu;Genya Ishigaki;J. Jue
中科院分区：
文献类型：
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作者：
Riti Gour;Varin Sikand;Joseph Chang;Zhouxiang Wu;Genya Ishigaki;J. Jue
在这项工作中，我们考虑服务功能链（SFC）的网络切片组成问题，它解决了以保证SFC的可用性同时最小化成本的方式分配带宽和VNF资源的问题。为了满足 SFC 的可用性要求，我们采用流量加权可用性模型，确保切片拓扑支持的流量的长期比例保持在所需阈值之上。我们提出了一种构建单路径或多路径切片拓扑以及正确确定切片路径上的 VNF 副本和带宽的方法。通过模拟，我们表明，与 5G 网络中的专用保护方法相比，我们提出的算法可以降低建立的总成本。
In this work, we consider the network slice composition problem for Service Function Chains (SFCs), which addresses the issue of allocating bandwidth and VNF resources in a way that guarantees the availability of the SFC while minimizing cost. For the purpose of satisfying the availability requirement of the SFC, we adapt a traffic-weighted availability model which ensures that the long-term fraction of traffic supported by the slice topology remains above a desired threshold. We propose a method for composing a single or multi-path slice topology and for properly dimensioning VNF replicas and bandwidth on the slice paths. Through simulations, we show that our proposed algorithm can reduce the total cost of establishment compared to a dedicated protection approach in 5G networks.