Abstract
Recently, 5G installation has been started globally. Different capabilities are in the consistent procedure, like ultrareliability, mass connectivity, and specific low latency. Though, 5G is insufficient to meet all the necessities of the future technology in 2030 and so on. Next generation information and communication technology is playing an important role in attraction of researchers, industries, and technical people. With respect to 5G networks, sixth‐generation (6G) CR networks are anticipated to familiarize innovative use cases and performance metrics, such as to offer worldwide coverage, cost efficiency, enhanced spectral, energy improved intelligence, and safety. To reach such requirements, upcoming 6G CRNs will trust novel empowering technologies. Innovative network architecture and transmission technologies and air interface are of excessive position, like multiple accesses, waveform design, multiantenna technologies, and channel coding schemes. (1) To content, the condition should be of worldwide coverage, there will be no limit on 6G to global CR communication networks that may require to be completed with broadcast networks, like satellite communication networks, therefore, attaining a sea integrated communication network. (2) The spectrums overall will be entirely travelled to the supplementary rise connection density data rates in optical frequency bands, millimeter wave (mmWave), sub‐6 GHz, and terahertz (THz). (3) To see big datasets created because of tremendously varied CR communication networks, antenna rush, diverse communication scenarios, new provision necessities, wide bandwidth, and 6G CRNs will allow an innovative variety of intelligent applications with the assistance of big data and AI technologies. (4) Need to improve network security when deploying 6G technology in CR networks. 6G is decentralized, intended, intelligent innovative, and distributed network. In this article, we studied a survey of current developments and upcoming trends. We studied the predicted applications, possible technologies, and security issues for 6G CR network communication. We also discussed predicted future key challenges in 6G.
Highlights
From 2020, 5G cognitive radio networks (CRNs) [1] are playing a key role in global communication and spectrum sharing
(2) The spectrums overall will be entirely travelled to the supplementary rise connection density data rates in optical frequency bands, millimeter wave, sub-6 GHz, and terahertz (THz). (3) To see big datasets created because of tremendously varied CR communication networks, antenna rush, diverse communication scenarios, new provision necessities, wide bandwidth, and 6G CRNs will allow an innovative variety of intelligent applications with the assistance of big data and AI technologies
Deep space connectivity near the earth is still budding with 5G; several use forms range from remote sensing and radio astronomy to backhauling and navigation, which will advance from universal connectivity supported by 6G technology
Summary
From 2020, 5G cognitive radio networks (CRNs) [1] are playing a key role in global communication and spectrum sharing. We focused that artificial intelligence that will empower 6G in all forms, network management and composition, signal processing and physical layer, service-based communication, and data mining [24]. Performance Mobility, latency, security, surety, spectrum efficiency, energy efficiency, coverage, intelligent level, peak, data rate, connection density and area traffic capacity etc. In the cloud radio access network architecture, signal processing computations are performed at the baseband unit This cloud access radio network may complete the 5G requirements, service heterogeneously, communication overhead, and BBU performed computation, six generation 6G network will improve computational complexity and latency [25]. The high-frequency operation, heterogeneity, mobility, and dense operation will present a different dimension of propagation, radio resource allocation, spectrum access, security concerns, and scheduling Such sprints will be worsened with the intended 3D communication infrastructure [27] for 6G joining mobile ground and aerial platforms. After detection of the present channel, transmission requires nodes or SUs should be aware by satisfactory channel for circuit configuration
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