The cellular network standard is gradually stepping towards the 6th Generation (6G). In 6G, the pioneering and exclusive features, such as creating connectivity even in space and under water, are attracting Governments, organizations and researchers to spend time, money, effort extensively in this area. In the direction of intelligent network management and distributed secured systems, Artificial Intelligence (AI) and blockchain are going to form the backbone of 6G, respectively. However, there is a need for the study of the 6g architecture and technology, such that researchers can identify the scopes of improvement in 6G. Therefore, in this survey, we discuss the primary requirements of 6G along with its overall architecture and technological aspects. We also highlight crucial challenges and future research directions in 6G networks, which can lead to the successful practical implementation of 6G, as per the objective of its introduction in next generation cellular networks.

翻译：在6G中,开创性和独有的特征,例如甚至在空间和水下建立连通性,正在吸引各国政府、组织和研究人员在这一领域花费大量时间、金钱和精力;在智能网络管理和分布式安全系统方面,人工智能情报(AI)和块链将分别成为6G的支柱;然而,需要研究6G的架构和技术,使研究人员能够确定6G的改进范围。 因此,在本调查中,我们讨论了6G的主要要求及其总体架构和技术方面;我们还强调了6G网络中的关键挑战和未来研究方向,按照在下一代蜂窝网络中引入6G的目标,6G的实施工作将取得成功。