The advanced communication networks require heterogeneous emerging technologies to be combined while enabling various future applications. The integration of 5G wireless and optical technology is considered an unavoidable approach to reach this goal. Based on 5G mobile communications and densification of cells, the upcoming idea of smart city becomes feasible and put on a lot of attention from the research community due to its effect on everyday life’s improvement and modernization. The concept of a smart city should support everything from electrical grids to traffic management and requires the transmission of a huge amount of data. Smart city planning with a reliable communication infrastructure that can provide stringent network requirements is unfeasible without the joint of optical and wireless technologies. This paper aims to provide an overview of recent developments of advanced optical networking to provide 5G transport networks and their applications in connecting a huge number of devices in future smart city infrastructures. The implementation of optical technologies in 5G core networking open numerous questions of how wireless and optical can coexist to provide sophisticated future applications, such as the smart city concept. Within this research, we will provide the answers to some of the key related questions.

先进的通信网络要求将各种新兴技术结合在一起，同时支持各种未来应用。5G无线和光学技术的集成被认为是实现此目标的一种不可避免的方法。基于5G移动通信和小区致密化，即将出现的智慧城市构想因其对日常生活的改善和现代化的影响而变得可行并引起了研究界的广泛关注。智慧城市的概念应支持从电网到交通管理的所有内容，并需要传输大量数据。没有光学和无线技术的结合，具有可靠的通信基础设施，可以提供严格的网络要求的智能城市规划是不可行的。本文旨在概述高级光网络的最新发展，以提供5G传输网络及其在连接未来智能城市基础设施中的大量设备方面的应用。在5G核心网络中实施光学技术提出了许多问题，这些问题涉及无线和光学如何共存以提供复杂的未来应用，例如智慧城市概念。在这项研究中，我们将为一些关键的相关问题提供答案。在5G核心网络中实施光学技术提出了许多问题，这些问题涉及无线和光学如何共存以提供复杂的未来应用，例如智慧城市概念。在这项研究中，我们将为一些关键的相关问题提供答案。在5G核心网络中实施光学技术提出了许多问题，这些问题涉及无线和光学如何共存以提供复杂的未来应用，例如智慧城市概念。在这项研究中，我们将为一些关键的相关问题提供答案。