Brief Introduction of Fog Radio Access Networks

To meet diverse performance requirements of the fifth generation (5G) and even the sixth generation (6G) mobile communication systems, fog radio access network (F-RAN) has been proposed to improve capacity, decrease transmit latency, and increase connective density through combining cloud computing, mobile edge computing (MEC) into heterogeneous networks (HetNets). In this section, we will review the evolution motivation and path of radio access networks and present the potential emerging services over F-RANs. Since F-RANs are strictly related to MEC and cloud computing, the difference among them will be highlighted. With the rapid deployment of 5G, 6G has attracted extensive attentions from academia, industry, and government agencies, and the features and key techniques of F-RANs in 6G will be discussed as well.

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