  Artificial intelligence (AI) powered wireless networks promise to
revolutionize the conventional operation and structure of current networks from
network design to infrastructure management, cost reduction, and user
performance improvement. Empowering future networks with AI functionalities
will enable a shift from reactive/incident driven operations to
proactive/data-driven operations. This paper provides an overview on the
integration of AI functionalities in 5G and beyond networks. Key factors for
successful AI integration such as data, security, and explainable AI are
highlighted. We also summarize the various types of network intelligence as
well as machine learning based air interface in future networks. Use case
examples for the application of AI to the wireless domain are then summarized.
We highlight on applications to the physical layer, mobility management,
wireless security, and localization.
