The main innovation of the Fifth Generation (5G) of mobile networks is the ability to provide novel services with new and stricter requirements. One of the technologies that enable the new 5G services is the Multi-access Edge Computing (MEC). MEC is a system composed of multiple devices with computing and storage capabilities that are deployed at the edge of the network, i.e., close to the end users. MEC reduces latency and enables contextual information and real-time awareness of the local environment. MEC also allows cloud offloading and the reduction of traffic congestion. Performance is not the only requirement that the new 5G services have. New mission-critical applications also require high security and dependability. These three aspects (security, dependability, and performance) are rarely addressed together. This survey fills this gap and presents 5G MEC by addressing all these three aspects. First, we overview the background knowledge on MEC by referring to the current standardization efforts. Second, we individually present each aspect by introducing the related taxonomy (important for the not expert on the aspect), the state of the art, and the challenges on 5G MEC. Finally, we discuss the challenges of jointly addressing the three aspects.

中文翻译：

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5G 多接入边缘计算：安全性、可靠性和性能

第五代 (5G) 移动网络的主要创新是能够提供具有新的更严格要求的新服务。支持新 5G 服务的技术之一是多接入边缘计算 (MEC)。MEC 是一个由多个具有计算和存储能力的设备组成的系统，这些设备部署在网络的边缘，即靠近最终用户。MEC 可减少延迟并实现上下文信息和对本地环境的实时感知。MEC 还允许云卸载和减少交通拥堵。性能并不是新 5G 服务的唯一要求。新的关键任务应用程序还需要高度的安全性和可靠性。这三个方面（安全性、可靠性和性能）很少一起解决。本次调查填补了这一空白，并通过解决所有这三个方面来介绍 5G MEC。首先，我们通过参考当前的标准化工作来概述 MEC 的背景知识。其次，我们通过介绍相关分类法（对于该方面的非专家来说很重要）、最新技术和 5G MEC 的挑战来分别介绍每个方面。最后，我们讨论了共同解决这三个方面的挑战。