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Low-latency orchestration for workflow-oriented service function chain in edge computing

机译:边缘计算中面向工作流的服务功能链的低延迟编排

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摘要

To realize a cost-efficient, affordable, economical, flexible, elastic and innovative network service, the concepts of Network Function Virtualization (NFV) and Software-Defined Network (SDN) have emerged in edge computing. In the case of NFV deployment, most research regards the deployment of Service Function Chaining (SFC), which is composed of several series-connected Virtual Network Functions (VNFs). Current NFV deployment approaches concern how to efficiently deploy the chaining service requests. They do not consider the possible form of the service requests in edge computing. Furthermore, the study regarding response latency in NFV is limited to the chaining service requests. Most studies consider the deployment of several VNFs in one SFC onto the same substrate node to reduce the total latency and resource consumptions. In this paper, we first propose a novel workflow-like service request (WFR), which is completely different from the chaining service request. Then, a Dynamic Minimum Response Time considering Same Level (DMRT_SL) has been proposed to efficiently map the workflow-like requests in edge computing. We use a randomly generated topology as our underlying network. It can be seen from the data obtained from a large number of simulation experiments that DMRT_SL not only is particularly outstanding in terms of response time delay but that blocking rate and deploy time behavior are also particularly surprising.
机译:为了实现经济高效,价格合理,经济,灵活,弹性和创新的网络服务,边缘计算中出现了网络功能虚拟化(NFV)和软件定义网络(SDN)的概念。对于NFV部署,大多数研究都涉及服务功能链(SFC)的部署,该功能由几个串联的虚拟网络功能(VNF)组成。当前的NFV部署方法涉及如何有效地部署链接服务请求。他们没有考虑边缘计算中服务请求的可能形式。此外,有关NFV中响应延迟的研究仅限于链接服务请求。大多数研究都考虑在一个SFC中将多个VNF部署到同一基板节点上,以减少总延迟和资源消耗。在本文中,我们首先提出了一种新颖的类似于工作流的服务请求(WFR),它与链接服务请求完全不同。然后,已经提出了考虑相同级别的动态最小响应时间(DMRT_SL),以在边缘计算中有效地映射类似工作流的请求。我们使用随机生成的拓扑作为我们的基础网络。从大量仿真实验获得的数据可以看出,DMRT_SL不仅在响应时间延迟方面特别出色,而且阻塞率和部署时间行为也特别令人惊讶。

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