  In order to make Internet connections ubiquitous and autonomous in our daily
lives, maximizing the utilization of radio resources and social information is
one of the major research topics in future mobile communication technologies.
Fog radio access network (FRAN) is regarded as a promising paradigm for the
fifth generation (5G) of mobile networks. FRAN integrates fog computing with
RAN and makes full use of the edge of networks. FRAN would be different in
networking, computing, storage and control as compared with conventional radio
access networks (RAN) and the emerging cloud RAN. In this article, we provide a
description of the FRAN architecture, and discuss how the distinctive
characteristics of FRAN make it possible to efficiently alleviate the burden on
the fronthaul, backhaul and backbone networks, as well as reduce content
delivery latencies. We will focus on the mobility management, interference
mitigation, and resource optimization in FRAN. Our simulation results show that
the proposed FRAN architecture and the associated mobility and resource
management mechanisms can reduce the signaling cost and increase the net
utility for the RAN.
