Ultra-Reliable and Low Latency Communications (URLLC) is a Fifth Generation (5G) or Beyond(B) 5G of Mobile Networks service that presents strict reliability and latency requirements. Multi-Access Edge Computing (MEC) and Network Function Virtualization (NFV) emerge as essential solutions since they allow network applications/functions to be virtualized and hosted closer to the end-user, improving reliability and latency. However, they may incur delay overheads (e.g., resource setup delay, failure events) to the dynamic resource provisioning that may impair the URLLC, which must be considered in the MECNFV node setting. This work addresses the resource provisioning for URLLC services in MEC-NFV-based networks, considering the Virtualized Network Function (VNF) setup time, failure occurrence and resource pre-initialization. A queue-based model is proposed to analyze the MEC-NFV node configuration in terms of average response time, blocking probability, and average number of active resources, under different service arrival and resource setup rates, maximum system capacity, number of resources and pre-initialized ones are carried out. The results show that the resource pre-initialization may mitigate the negative effect of the lower VNF setup rate.

中文翻译：

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基于MEC-NFV的URLLC业务5G网络建模与分析

超可靠和低延迟通信 (URLLC) 是第五代 (5G) 或超越 (B) 5G 的移动网络服务，具有严格的可靠性和延迟要求。多接入边缘计算 (MEC) 和网络功能虚拟化 (NFV) 成为必不可少的解决方案，因为它们允许将网络应用程序/功能虚拟化并托管在更靠近最终用户的位置，从而提高可靠性和延迟。然而，它们可能会导致动态资源供应的延迟开销（例如，资源设置延迟、故障事件），这可能会损害 URLLC，必须在 MECNFV 节点设置中考虑。这项工作解决了基于 MEC-NFV 的网络中 URLLC 服务的资源配置，考虑了虚拟化网络功能 (VNF) 设置时间、故障发生和资源预初始化。提出了一种基于队列的模型，从平均响应时间、阻塞概率和平均活动资源数等方面分析了 MEC-NFV 节点配置，在不同的服务到达和资源建立率、最大系统容量、资源数和预- 进行了初始化。结果表明，资源预初始化可以减轻较低 VNF 设置速率的负面影响。