"An Information Theoretic Perspective of Fronthaul Constrained Cloud and Fog Radio Access Networks"

Cloud radio access network (C-RAN) architectures in which the processing/decoding is migrated from the local
base-stations/radio units (RUs) to a control/central units (CU) in the "cloud" offer a variety of advantages to cellular
and wireless networks in general. Fog radio access networks (F-RAN) address the case where the RUs
are enhanced by having the ability of local caching of popular contents. The network operates via fronthaul digital links
connecting the CU and the RUs. In this talk we will address basic information theoretic aspects of such
networks, with emphasis of simple oblivious processing. Theoretical results illustrate the considerable performance gains to be
expected for different cellular models. Some interesting theoretical directions conclude the presentation.
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Joint work with S.-H. Park, O. Simeone, and O. Sahin.
This work is supported by the European Union's Horizon 2020 Research
And Innovation Programme, grant agreement no. 694630.