Managing Chains of Application Functions Over Multi-Technology Edge Networks
Managing Chains of Application Functions Over Multi-Technology Edge Networks
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DOI：
10.1109/tnsm.2021.3050009
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发表时间：
2021-03
影响因子：
5.3
通讯作者：
Nabeel Akhtar;I. Matta;A. Raza;L. Goratti;T. Braun;Flavio Esposito
中科院分区：
文献类型：
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作者：
Nabeel Akhtar;I. Matta;A. Raza;L. Goratti;T. Braun;Flavio Esposito
下一代网络有望提供更高的数据速率和超低延迟，以支持要求苛刻的应用，如虚拟和增强现实、机器人和无人机等，为了满足应用的这些严格要求，边缘计算构成了解决方案架构的中心部分，其中应用的功能组件可以部署在边缘网络上以减少核心网络上的带宽需求，为用户提供超低延迟通信。在本文中，我们提供了通过虚拟化客户端-边缘-服务器基础设施对应用程序进行资源编排和管理的解决方案。我们调查的问题的管道的应用程序功能（虚拟服务链）和通过它们的流量的导向，在一个多技术的边缘网络模型，包括有线和无线毫米波（毫米波）链路的最佳位置。这个问题是$\mathcal {NP}$ -hard的。我们提供了一个全面的“微观”二进制整数规划模型的系统，沿着的启发式，是一个数量级的速度比最佳解决问题。广泛的评估表明，编排虚拟服务链（通过将它们分布在边缘网络上）的好处相比，基线“中间盒”的方法在整体可接受的虚拟容量。此外，当部署少量mmWave链路以补充高节点密度网络中的Wire物理基础设施时，我们观察到显著的收益。
Next-generation networks are expected to provide higher data rates and ultra-low latency in support of demanding applications, such as virtual and augmented reality, robots and drones, etc. To meet these stringent requirements of applications, edge computing constitutes a central piece of the solution architecture wherein functional components of an application can be deployed over the edge network to reduce bandwidth demand over the core network while providing ultra-low latency communication to users. In this article, we provide solutions to resource orchestration and management for applications over a virtualized client-edge-server infrastructure. We investigate the problem of optimal placement of pipelines of application functions (virtual service chains) and the steering of traffic through them, over a multi-technology edge network model consisting of both wired and wireless millimeter-wave (mmWave) links. This problem is $\mathcal {NP}$ -hard. We provide a comprehensive “microscopic” binary integer program to model the system, along with a heuristic that is one order of magnitude faster than optimally solving the problem. Extensive evaluations demonstrate the benefits of orchestrating virtual service chains (by distributing them over the edge network) compared to a baseline “middlebox” approach in terms of overall admissible virtual capacity. Moreover, we observe significant gains when deploying a small number of mmWave links that complement the Wire physical infrastructure in high node density networks.