AIArtificial Intelligence (AI) techniques enable cellular networksCellular network to be richer and more reliable connectivity. They make the networks automate, reduce human error, optimize the configuration of the network setting, enhance security level, and adopt new applications and use cases. Unlike information and communication theory by C. Shannon, cellular networksCellular network do not have a unified theory to cover entire network operations and tasks. Thus, AIArtificial Intelligence (AI) may be good tool to explain the tasks of network levels. In this chapter, we discuss how AIArtificial Intelligence (AI) techniques can be used in various network tasks.