确定影响未来5G及以后软件网络延迟的需求

Idris Badmus, Abdelquoddouss Laghrissi, Marja Matinmikko-Blue, A. Pouttu
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引用次数: 6

摘要

利用SDN/NFV等技术的软件网络概念具有不同的优点,例如降低运营成本(OPEX)和减少对底层硬件组件的依赖。随着未来技术(即5G及以后)的灵活性、可重构性和可编程性的增加,以及网络虚拟化和软件化的全面发展,一组新的需求/参数可以被识别出来,影响虚拟化网络中的延迟。在本文中,我们确定了虚拟化网络的不同延迟需求。这些需求包括VNF (Virtual Network Function)部署时间、建立/连接时间和应用程序实例化时间。我们进一步测试了一些因素(如VNF的资源使用情况、在VNF中运行的应用程序和VNF的共享状态)如何协调地影响已确定的虚拟化网络的延迟需求。实验上,为了进行性能分析,我们使用开源工具部署了一个基于ETSI-NFV架构的软件网络。结果表明,为了实现整体超可靠的低延迟,需要考虑新的延迟需求集,以及不同因素如何影响这些新需求,特别是在核心网中。此外,我们的性能分析结果证明了虚拟化网络的延迟和VNFs的资源使用之间的权衡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identifying Requirements Affecting Latency in a Softwarized Network for Future 5G and Beyond
The concept of a softwarized network leveraging technologies such as SDN/NFV, comes with different merits such as decreased Operational Expenses (OPEX) and less dependency on underlying hardware components. With the amount of increased flexibility, reconfigurability and programmability attributed to future technologies (i.e., 5G and beyond), and towards the complete network virtualization and softwarization, a new set of requirements/parameters can be identified affecting the latency in a virtualized network. In this paper, we identify different latency requirements for a virtualized network. These requirements include the Virtual Network Function (VNF) deployment time, establishment/connection time and application instantiation time. We further test how some factors such as VNFs' resource usage, the applications running within the VNF and the shared status of the VNF, coordinately affect the identified latency requirement for a virtualized network. Experimentally, for performance analysis, we deploy a softwarized network based on the ETSI-NFV architecture, using open source tools. The results show that the new set of latency requirements is relevant for consideration in order to achieve an overall ultra-reliable low latency and how different the factors can affect these new requirements, especially in the core network. Furthermore, the result of our performance analysis proves the trade-off between latency of a virtualized network and the resource usage of the VNFs.
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