Abstract
This article analyzes CRN and 5G-based IoT applications, the challenges and opportunities in their implementation. Initially, the relevance of the use of cognitive radio networks and 5G technologies in the implementation of IoT applications was revealed for today's science and technology. Then, the concepts of cognitive radio and cognitive IoT, their possibilities are explained. The IoT architecture based on CRN and 5G is presented and the principles of operation are explained. The application of CRN and 5G-based IoT in Smart Home, Smart City, Smart Grid, Smart Medicine, Smart Transportation, Environmental and other applications was analyzed. Also, the main problems in the implementation of CRN and 5G-based IoT: hardware design problems, rapid data analysis problems, spectrum resource management problems, Standardization link problems related to network construction and location, energy efficiency and security problems, as well as potential opportunities to solve them were analyzed.
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