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In this work, we consider a Fog Radio Access Network (F-RAN) system with apartially connected wireless topology and no channel state informationavailable at the cloud and Edge Nodes (ENs). An F-RAN consists of ENs that areequipped with caches and connected to the cloud through fronthaul links. Wefirst focus on the case where cloud connectivity is disabled, and hence the ENshave to satisfy the user demands based only on their cache contents. For aclass of partially connected regular networks, we present a delivery schemewhich combines intra-file MDS coded caching at the ENs and blind interferenceavoidance on the wireless edge channel. This scheme requires minimum storageand leads to an achievable Normalized Delivery Time (NDT) that is within aconstant multiplicative factor of the best known NDT with full storage. We nextprovide achievable schemes for the case where cloud connectivity is enabled,and we provide new insights on the interplay between cloud connectivity andedge caching when only topological information is available.

Cache-Aided Content Delivery in Fog-RAN Systems with Topological Information and no CSI