The world has advanced more than two centuries in the last 20 years in every aspect of existence. Every day, new inventions are made that improve our quality of life and make our lives easier. One aspect of contemporary innovation is the idea of the smart city. Many businesses and governments are embracing the idea of the "smart city" to improve quality of life for citizens while cutting costs. This model is made up of a variety of different technologies. Internet of Things, cloud and fog computing, UAV, and other technologies are among them. On the other hand, in order to achieve these important goals, it is necessary to provide the multiple system components with the necessary synchronisation and mechanism, which calls for well-organized interaction and communication protocols. In this study, we categorise the networking requirements and characteristics of smart.