5G-MEC系统的安全感知可用性建模
Security-Aware Availability Modeling of a 5G-MEC System
AI总结：
针对5G-MEC系统，提出扩展两级可用性模型，纳入连接故障与攻击，经Möbius仿真表明三元素冗余可达约4个9可用性，并识别出影响可用性的关键因素。
摘要：
多接入边缘计算（MEC）是第五代（5G）移动网络的一项关键技术。MEC通过将计算资源靠近终端用户，实现了低延迟服务。5G与MEC技术的融合为广泛应用提供了有利平台，包括各种关键任务型应用，如智能电网、工业互联网和远程医疗，这些应用要求高可靠性和安全性。确保安全性和可靠性是一项复杂而关键的任务，若未能达到必要目标，可能导致严重后果。联合建模有助于评估和实现所需需求。基于这些动机，我们提出了对5G-MEC系统两级可用性模型的扩展。与现有工作相比，我们的扩展模型（i）包含了5G-MEC元素之间连接故障，以及（ii）考虑了对5G-MEC元素或其互连的攻击。我们在Möbius中实现并运行该模型。结果表明，三元素冗余，尤其是管理和核心元素的冗余，是必要的且足以在考虑连接性和安全性时达到约4个9的可用性。此外，评估显示，攻击检测缓慢、攻击恢复缓慢以及连接性差是影响系统整体可用性的最重要因素。
英文摘要：
Multi-access Edge Computing (MEC) is an essential technology for the fifth generation (5G) of mobile networks. MEC enables low-latency services by bringing computing resources close to the end-users. The integration of 5G and MEC technologies provides a favorable platform for a wide range of applications, including various mission-critical applications, such as smart grids, industrial internet, and telemedicine, which require high dependability and security. Ensuring both security and dependability is a complex and critical task, and not achieving the necessary goals can lead to severe consequences. Joint modeling can help to assess and achieve the necessary requirements. Under these motivations, we propose an extension of a two-level availability model for a 5G-MEC system. In comparison to the existing work, our extended model (i) includes the failure of the connectivity between the 5G-MEC elements and (ii) considers attacks against the 5G-MEC elements or their interconnection. We implement and run the model in Möbius. The results show that a three-element redundancy, especially of the management and core elements, is needed and still enough to reach around 4-nines availability even when connectivity and security are considered. Moreover, the evaluation shows that slow detection of attacks, slow recovery from attacks, and bad connectivity are the most significant factors that influence the overall system availability.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
